Aquatic Sciences and Fisheries Thesaurus

ASFIS Reference Series, No. 6, Revision 1, 1986

Compiled by: E. Fagetti, D.W. Privett, & J.R.L. Sears

    The following list of terms are used by ASFA indexers to describe the contents of publications in a consistent, comprehensive and concise manner. Each term may be followed by:
  • Notes: These comments provide additional information about the term (e.g. definitions and usage history).
  • BT and NT: These labels indicate broader and narrower terms, respectively. They reflect the hierarchical nature of the descriptors (e.g. DISEASES is a broad term relative to FISH DISEASES).
  • RT: Related terms are non-hierarchical relations which direct the users to alternative descriptors in the event that the initial term is conceptually inappropriate. Please note that a maximum of three related terms are provided in this temporary edition.
  •     The ASFA thesaurus is split into several html files to facilitate loading. Use the following alphabet to maneuver, or use your browser's FIND button to search for specific words within a page. Please note: This online thesaurus is a rudimentary version of a fully interactive thesaurus that will be completed in the near future. The present version does not reproduce the printed thesaurus in its entirety. Specifically, a maximum of three related terms are provided, and invalid terms (and corresponding translation) are not included.
     
     

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    P-WAVES
        BT: BODY WAVES
        RT: COMPRESSIONAL WAVE VELOCITIES
        RT: S-WAVES

    PACK ICE
        BT: FLOATING ICE
        RT: ICE BARRIERS
        RT: ICE CANOPY
        RT: ICE DRIFT

    PACKING FISHERY PRODUCTS
        Notes: Referring to methods, techniques and material for packing industrial fishery products
        RT: FISHERY INDUSTRY
        RT: FISHERY PRODUCTS
        RT: PACKING MATERIALS

    PACKING MATERIALS
        Notes: Added in 1980
        BT: MATERIALS
        RT: PACKING FISHERY PRODUCTS

    PAINTS
        BT: COATING MATERIALS
        RT: ANTIOXIDANTS
        RT: CHEMICAL POLLUTANTS
        RT: CHEMICAL POLLUTION

    PALAEO STUDIES
        RT: PALAEONTOLOGY

    PALAEOCEANOGRAPHY
        Notes: Before 1986 search also PALAEOOCEANOGRAPHY
        BT: OCEANOGRAPHY
        RT: FOSSIL SEA WATER
        RT: PALAEOCLIMATE
        RT: PALAEOENVIRONMENTS

    PALAEOCENE
        Notes: Before 1982 search PALEOCENE EPOCH
        BT: PALAEOGENE

    PALAEOCLIMATE
        BT: CLIMATE
        RT: CLIMATIC CHANGES
        RT: CONTINENTAL DRIFT
        RT: FOSSILS

    PALAEOCLIMATOLOGY
        BT: CLIMATOLOGY
        RT: CONTINENTAL DRIFT
        RT: EOLIAN DUST
        RT: GEOMORPHOLOGY

    PALAEOCURRENTS
        RT: ICE RAFTING
        RT: OCEAN CURRENTS
        RT: PROVENANCE

    PALAEOECOLOGY
        BT: ECOLOGY
        RT: FOSSILS
        RT: GEOLOGICAL TIME
        RT: LAND BRIDGES

    PALAEOENVIRONMENTS
        BT: ENVIRONMENTS
        RT: PALAEOCEANOGRAPHY
        RT: PALAEOCLIMATE
        RT: PALAEONTOLOGY

    PALAEOGENE
        BT: TERTIARY
        NT: EOCENE
        NT: OLIGOCENE
        NT: PALAEOCENE

    PALAEOLATITUDE
        BT: LATITUDE
        RT: PALAEOMAGNETISM
        RT: POLAR WANDERING

    PALAEOLIMNOLOGY
        BT: LIMNOLOGY
        RT: PALAEOCLIMATE
        RT: PALAEONTOLOGY

    PALAEOMAGNETISM
        BT: GEOPHYSICS
        RT: CONTINENTAL DRIFT
        RT: GEOMAGNETISM
        RT: MAGNETIC ANOMALIES

    PALAEONTOLOGY
        NT: MICROPALAEONTOLOGY
        RT: ARCHAEOLOGY
        RT: BIOFACIES
        RT: BIOSTRATIGRAPHY

    PALAEOSALINITY
        BT: SALINITY
        RT: CLIMATIC CHANGES
        RT: MESSINIAN
        RT: PALAEOCEANOGRAPHY

    PALAEOSHORELINES
        BT: COASTAL LANDFORMS
        RT: COASTAL MORPHOLOGY
        RT: PALAEOTOPOGRAPHY
        RT: SEA LEVEL CHANGES

    PALAEOTEMPERATURE
        BT: WATER TEMPERATURE
        RT: CLIMATIC CHANGES
        RT: PALAEOCEANOGRAPHY
        RT: PALAEOENVIRONMENTS

    PALAEOTOPOGRAPHY
        BT: BOTTOM TOPOGRAPHY
        RT: PALAEOCEANOGRAPHY
        RT: PALAEOSHORELINES

    PALAEOZOIC
        Notes: Before 1982 search PALEOZOIC ERA
        BT: GEOLOGICAL TIME
        NT: CAMBRIAN
        NT: CARBONIFEROUS
        NT: DEVONIAN
        NT: ORDOVICIAN
        NT: PERMIAN
        NT: SILURIAN
        RT: PHANEROZOIC

    PALAGONITE
        BT: VOLCANIC ROCKS
        RT: BASALT-SEAWATER INTERACTION
        RT: GLASS
        RT: PILLOW LAVA

    PALATABILITY
        RT: ARTIFICIAL FEEDING
        RT: FOOD ADDITIVES
        RT: FOOD FISH

    PALLADIUM
        BT: CHEMICAL ELEMENTS
        RT: METALS
        RT: PALLADIUM COMPOUNDS
        RT: PALLADIUM ISOTOPES

    PALLADIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: PALLADIUM

    PALLADIUM ISOTOPES
        BT: ISOTOPES
        RT: PALLADIUM

    PALYGORSKITE
        BT: CLAY MINERALS

    PALYNOLOGY
        RT: BOTANY
        RT: FOSSIL POLLEN
        RT: FOSSIL SPORES

    PANCREAS
        BT: DIGESTIVE GLANDS
        RT: INSULIN

    PARAMETERIZATION
        Notes: Used only as a qualifier
        RT: PARAMETERS

    PARAMETERS
        Notes: Used only as a qualifier
        RT: CORIOLIS PARAMETER
        RT: PARAMETERIZATION
        RT: PROPERTIES

    PARASITE ATTACHMENT
        Notes: Added in 1980
        BT: BIOLOGICAL ATTACHMENT
        RT: ATTACHMENT ORGANS
        RT: PARASITES
        RT: PARASITISM

    PARASITE CONTROL
        BT: CONTROL
        RT: PARASITE RESISTANCE
        RT: PARASITES
        RT: PARASITIC DISEASES

    PARASITE RESISTANCE
        Notes: Added in 1980
        BT: BIOLOGICAL RESISTANCE
        RT: PARASITE CONTROL
        RT: PARASITES
        RT: PARASITISM

    PARASITES
        NT: ECTOPARASITES
        NT: ENDOPARASITES
        RT: BIOLOGICAL VECTORS
        RT: COMMENSALISM
        RT: HOSTS

    PARASITIC CASTRATION
        Notes: Failure of a host to reproduce due to partial or complete destruction of its gonads caused by parasitic activities. Added in 1982
        RT: CASTRATION
        RT: MARINE CRUSTACEANS
        RT: MARINE MOLLUSCS

    PARASITIC DISEASES
        BT: INFECTIOUS DISEASES
        RT: ANTIHELMINTHIC AGENTS
        RT: ANTIPARASITIC AGENTS
        RT: ANTIPROTOZOAL AGENTS

    PARASITISM
        BT: INTERSPECIFIC RELATIONSHIPS
        NT: ECTOPARASITISM
        NT: ENDOPARASITISM
        RT: HOST PREFERENCES
        RT: HOSTS
        RT: PARASITE ATTACHMENT

    PARASITOLOGY
        BT: ECOLOGY
        RT: AUTECOLOGY
        RT: BACTERIOLOGY
        RT: BIOLOGICAL VECTORS

    PARENTAL BEHAVIOUR
        Notes: Before 1982 search REPRODUCTIVE BEHAVIOUR
        BT: BEHAVIOUR
        RT: REPRODUCTIVE BEHAVIOUR

    PARTHENOGENESIS
        BT: REPRODUCTION
        RT: CLONES

    PARTIALLY-MIXED ESTUARIES
        BT: ESTUARIES
        RT: ESTUARINE DYNAMICS

    PARTICLE CONCENTRATION
        Notes: Use only for suspended particulate matter
        RT: GRAVIMETRIC TECHNIQUES
        RT: LIGHT ABSORPTION
        RT: LIGHT SCATTERING

    PARTICLE COUNTERS
        BT: COUNTERS
        RT: PARTICLE CONCENTRATION
        RT: SUSPENDED PARTICULATE MATTER

    PARTICLE DISTRIBUTION
        RT: KURTOSIS
        RT: PARTICLE SCATTERING
        RT: TURBIDITY

    PARTICLE MOTION
        NT: PARTICLE SETTLING
        RT: BOTTOM STRESS
        RT: MOTION
        RT: NEAR-SURFACE LAYER

    PARTICLE SCATTERING
        Notes: Use for scattering of light in water by suspended particles
        BT: LIGHT SCATTERING
        RT: PARTICLE CONCENTRATION
        RT: PARTICLE DISTRIBUTION
        RT: PARTICLE SIZE

    PARTICLE SETTLING
        BT: PARTICLE MOTION
        RT: PARTICULATE FLUX
        RT: SETTLING RATE
        RT: STOKES LAW

    PARTICLE SIZE
        BT: SIZE
        RT: KURTOSIS
        RT: PARTICLE SCATTERING
        RT: TURBIDITY

    PARTICULATE FLUX
        Notes: Vertical flux of particulates in water column
        RT: PARTICLE MOTION
        RT: PARTICLE SETTLING
        RT: SEDIMENT TRAPS

    PARTICULATE ORGANIC CARBON
        BT: ORGANIC CARBON
        RT: PARTICULATE ORGANIC MATTER

    PARTICULATE ORGANIC MATTER
        BT: ORGANIC MATTER
        RT: PARTICULATE ORGANIC CARBON
        RT: PARTICULATE ORGANIC NITROGEN
        RT: PARTICULATE ORGANIC PHOSPHORUS

    PARTICULATE ORGANIC NITROGEN
        BT: ORGANIC NITROGEN
        RT: PARTICULATE ORGANIC MATTER

    PARTICULATE ORGANIC PHOSPHORUS
        BT: ORGANIC PHOSPHORUS
        RT: PARTICULATE ORGANIC MATTER

    PARTICULATES
        NT: ATMOSPHERIC PARTICULATES
        NT: SUSPENDED PARTICULATE MATTER

    PARTURITION
        Notes: Added in 1980
        BT: SEXUAL REPRODUCTION
        RT: AQUATIC MAMMALS
        RT: CETOLOGY
        RT: FEMALES

    PASSENGER SHIPS
        BT: MERCHANT SHIPS

    PASSIVE MARGINS
        BT: CONTINENTAL MARGINS
        RT: PLATE DIVERGENCE

    PASSIVE SONAR
        BT: SONAR
        RT: AMBIENT NOISE
        RT: SONAR DETECTION
        RT: SONOBUOYS

    PATENTS
        Notes: Patent of new equipment and apparatus
        BT: DOCUMENTS
        RT: ENGINEERING DRAWINGS
        RT: EQUIPMENT
        RT: LEGISLATION

    PATHOGENIC BACTERIA
        Notes: Added in 1980
        BT: BACTERIA
        RT: ANTIBIOTICS
        RT: BACTERIAL DISEASES

    PATHOGENS
        BT: SPECIES
        RT: BACTERINS
        RT: DISEASE CONTROL
        RT: DISEASES

    PATHOLOGY
        NT: HISTOPATHOLOGY
        RT: BIOLOGICAL VECTORS
        RT: DISEASES
        RT: EPIDEMICS

    PATTERN RECOGNITION
        RT: IMAGE ENHANCEMENT

    PCB
        Notes: Before 1982 search also POLYCHLORINATED BIPHENYLS
        BT: AROMATIC HYDROCARBONS
        RT: CHEMICAL COMPOUNDS
        RT: CHEMICAL POLLUTANTS
        RT: CHEMICAL POLLUTION

    PEARL CULTURE
        BT: AQUACULTURE
        RT: BRACKISHWATER AQUACULTURE
        RT: CULTURES
        RT: FRESHWATER AQUACULTURE

    PEARL FISHERIES
        Notes: Added in 1982
        BT: FISHERIES
        RT: FISHING BY DIVING
        RT: MARINE FISHERIES
        RT: PEARL CULTURE

    PEARL OYSTERS
        RT: PEARL CULTURE
        RT: PEARL FISHERIES
        RT: PEARLS

    PEARLS
        Notes: Including their formation by natural or artificial biosynthetic processes
        BT: ANIMAL PRODUCTS
        RT: BIOSYNTHESIS
        RT: BRACKISHWATER MOLLUSCS
        RT: FRESHWATER MOLLUSCS

    PEAT
        Notes: Remains of bog and fen vegetation
        BT: ORGANIC SEDIMENTS
        RT: HUMUS
        RT: LAKE DEPOSITS
        RT: ORGANIC MATTER

    PEBBLES
        BT: CLASTICS
        RT: RUDITES
        RT: SHINGLE

    PECKING ORDER
        Notes: Social hierarchy occurring in many animals that live together in groups. Added in 1980
        BT: DOMINANCE HIERARCHIES
        RT: AGGRESSIVE BEHAVIOUR
        RT: AQUATIC BIRDS

    PEDUNCLE DISEASE
        Notes: Added in 1980
        BT: FISH DISEASES
        RT: BACTERIAL DISEASES
        RT: ENVIRONMENTAL DISEASES
        RT: FISH CULTURE

    PELAGIC CLAY
        BT: CLAYS
        RT: CLAY MINERALS
        RT: PELAGIC SEDIMENTS

    PELAGIC ENVIRONMENT
        BT: AQUATIC ENVIRONMENT
        NT: NERITIC PROVINCE
        NT: OCEANIC PROVINCE
        RT: ABYSSAL ZONE
        RT: BATHYAL ZONE
        RT: LENITIC ENVIRONMENT

    PELAGIC FISHERIES
        BT: FISHERIES
        RT: CARANGID FISHERIES
        RT: CLUPEOID FISHERIES
        RT: FINFISH FISHERIES

    PELAGIC SEDIMENTATION
        BT: SEDIMENTATION
        RT: PELAGIC ENVIRONMENT
        RT: PELAGIC SEDIMENTS

    PELAGIC SEDIMENTS
        BT: SEDIMENTS
        RT: CARBONATE SEDIMENTS
        RT: CHEMICAL SEDIMENTS
        RT: EXTRATERRESTRIAL MATERIAL

    PELLET FEEDS
        Notes: Added in 1982
        BT: FEED
        RT: AQUACULTURE
        RT: ARTIFICIAL FEEDING
     

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    PENETRATION DEPTH
        RT: GEOTECHNOLOGY
        RT: PENETROMETERS
        RT: SEDIMENT PROPERTIES

    PENETROMETERS
        RT: BEARING CAPACITY
        RT: CORERS
        RT: GEOLOGICAL EQUIPMENT

    PEPTIDES
        BT: PROTEINS
        NT: POLYPEPTIDES
        RT: AMINO ACIDS

    PEPTONES
        Notes: Before 1982 search PROTEINS
        BT: PROTEINS

    PERCOID FISHERIES
        Notes: Exclude carangid fisheries. Added in 1982
        BT: FINFISH FISHERIES
        RT: CARANGID FISHERIES
        RT: COASTAL FISHERIES
        RT: DEMERSAL FISHERIES

    PERCOLATION
        BT: FLUID FLOW
        RT: GROUND WATER
        RT: LEACHING
        RT: POROSITY

    PERFORATED STRUCTURES
        RT: OFFSHORE STRUCTURES
        RT: STRUCTURES

    PERFORMANCE ASSESSMENT
        Notes: Used only as a qualifier
        BT: EVALUATION
        RT: ACCEPTABILITY
        RT: CERTIFICATION
        RT: EFFICIENCY

    PERIDOTITE
        BT: ULTRAMAFIC ROCKS
        RT: EARTH MANTLE
        RT: KIMBERLITES

    PERIODIC VARIATIONS
        BT: TEMPORAL VARIATIONS
        NT: ANNUAL VARIATIONS
        NT: DIURNAL VARIATIONS
        NT: SEASONAL VARIATIONS
        RT: CYCLIC LOADING
        RT: LONG-TERM CHANGES
        RT: PERIODICITY

    PERIODICITY
        Notes: Used only as a qualifier
        NT: ANNUAL
        NT: BIENNIAL
        NT: DAILY
        NT: HOURLY
        NT: MONTHLY
        NT: SEASONALITY
        NT: WEEKLY
        RT: FREQUENCY
        RT: PERIODIC VARIATIONS

    PERIPHERAL NERVOUS SYSTEM
        Notes: Added in 1980
        BT: NERVOUS SYSTEM
        NT: NERVES
        RT: SENSE ORGANS

    PERIPHYTON
        Notes: Assemblage of organisms on submerged objects
        BT: AQUATIC COMMUNITIES
        RT: EPIPHYTES

    PERMAFROST
        RT: ARCTIC ZONE
        RT: CRYOSPHERE
        RT: FREEZING

    PERMANENCE
        RT: CONTINENTAL DRIFT
        RT: CONTINENTS
        RT: OCEAN BASINS

    PERMANENT THERMOCLINE
        BT: THERMOCLINE
        RT: SOFAR CHANNEL
        RT: UPPER OCEAN

    PERMEABILITY
        BT: PHYSICAL PROPERTIES
        RT: CAPILLARITY
        RT: DIFFUSION
        RT: ELECTRICAL RESISTIVITY

    PERMEASES
        Notes: Before 1982 search ENZYMES
        BT: ENZYMES

    PERMIAN
        Notes: Before 1982 search PERMIAN SYSTEM
        BT: PALAEOZOIC

    PERMITS
        Notes: Including statistics relating to fisheries licences and licence fees
        BT: LICENCES
        RT: DRILLING
        RT: LEGAL ASPECTS
        RT: QUOTA REGULATIONS

    PERSISTENCE
        Notes: Used only as a qualifier
        NT: POLLUTANT PERSISTENCE
        RT: FATE
        RT: FLUSHING TIME

    PERSONAL BIBLIOGRAPHIES
        Notes: Bibliographies of individual workers
        BT: BIBLIOGRAPHIES
        RT: FESTSCHRIFTEN
        RT: OBITUARIES
        RT: SCIENTIFIC PERSONNEL

    PERSONNEL
        Notes: Before 1982 search SCIENTIFIC PERSONNEL
        NT: COASTGUARDS
        NT: CONSULTANTS
        NT: CONTRACTORS
        NT: CREW
        NT: EXPERTS
        NT: FISHERMEN
        NT: LIBRARIANS
        NT: SCIENTIFIC PERSONNEL
        RT: CAREERS
        RT: EDUCATION
        RT: HUMAN RESOURCES

    PERT
        BT: OPERATIONS RESEARCH
        RT: CRITICAL PATH METHOD
        RT: MANAGEMENT
        RT: NUMERICAL ANALYSIS

    PERTURBATION METHOD
        BT: NUMERICAL ANALYSIS
        RT: PERTURBATIONS

    PERTURBATIONS
        RT: OSCILLATIONS
        RT: PERTURBATION METHOD
        RT: STEADY STATE

    PEST CONTROL
        BT: CONTROL
        RT: BIOLOGICAL CONTROL
        RT: CHEMICAL CONTROL
        RT: CONTROL RESISTANCE

    PESTICIDES
        Notes: Different chlorinated hydrocarbon products
        NT: ALGICIDES
        NT: ANTIHELMINTHIC AGENTS
        NT: ANTIPARASITIC AGENTS
        NT: BACTERIOCIDES
        NT: FUNGICIDES
        NT: HERBICIDES
        NT: ICHTHYOCIDES
        NT: INSECTICIDES
        NT: MOLLUSCICIDES
        RT: AGRICULTURAL POLLUTION
        RT: AGRICULTURAL RUNOFF
        RT: BIOACCUMULATION

    PETROGENESIS
        Notes: Formation of rocks
        BT: GEOLOGY
        RT: ROCKS

    PETROLEUM
        BT: FOSSIL FUELS
        NT: CRUDE OIL
        NT: GAS CONDENSATES
        NT: NATURAL GAS
        NT: PETROLEUM RESIDUES
        RT: FUELS
        RT: HYDROCARBON ANALYSIS
        RT: INDUSTRIAL PRODUCTS

    PETROLEUM ENGINEERING
        BT: ENGINEERING
        RT: CHEMICAL ENGINEERING
        RT: OFFSHORE ENGINEERING
        RT: PETROLEUM

    PETROLEUM GEOLOGY
        BT: GEOLOGY
        RT: OIL AND GAS EXPLORATION
        RT: OIL AND GAS INDUSTRY
        RT: OIL RESERVOIRS

    PETROLEUM HYDROCARBONS
        BT: HYDROCARBONS
        NT: ASPHALT
        NT: BITUMENS
        NT: KEROGEN
        NT: TAR
        NT: VOLATILE HYDROCARBONS
        RT: PETROLEUM
        RT: PETROLEUM RESIDUES

    PETROLEUM RESIDUES
        BT: PETROLEUM
        RT: ASPHALT
        RT: BITUMENS
        RT: OIL SANDS

    PETROLOGY
        BT: GEOLOGY
        RT: GEOCHEMISTRY
        RT: LITHOLOGY
        RT: ROCKS

    PH
        BT: CHEMICAL PROPERTIES
        RT: ACIDIFICATION
        RT: ACIDITY
        RT: ALKALINITY

    PH EFFECTS
        Notes: Added in 1980
        BT: ENVIRONMENTAL EFFECTS
        RT: ACIDITY
        RT: PH

    PH SENSORS
        RT: PH
        RT: SENSORS

    PHAGOCYTOSIS
        BT: DEFENCE MECHANISMS
        RT: AMOEBOCYTES
        RT: CELLS
        RT: ENDOPARASITES

    PHANEROZOIC
        Notes: Before 1982 search PHANEROZOIC EON
        BT: GEOLOGICAL TIME
        RT: CENOZOIC
        RT: MESOZOIC
        RT: PALAEOZOIC

    PHARMACOLOGY
        Notes: Added in 1980
        RT: BIOCHEMISTRY
        RT: DRUGS
        RT: MEDICINE

    PHASE CHANGES
        NT: CONDENSATION
        NT: FLUIDIZATION
        NT: FREEZING
        NT: LIQUEFACTION
        NT: MELTING
        NT: SOLIDIFICATION
        NT: VAPORIZATION
        RT: BOILING POINT
        RT: FREEZING POINT
        RT: LOW TEMPERATURE

    PHASE VELOCITY
        BT: VELOCITY
        RT: GROUP VELOCITY
        RT: WATER WAVES
        RT: WAVE DISPERSION

    PHENOLOGY
        RT: BEHAVIOUR
        RT: BIOCLIMATOLOGY
        RT: BIOLOGICAL RHYTHMS

    PHENOLS
        BT: AROMATICS
        RT: CHEMICAL COMPOUNDS
        RT: CHEMICAL POLLUTANTS
        RT: CHEMICAL POLLUTION

    PHENOTYPES
        RT: ECOPHENE
        RT: ENVIRONMENTAL EFFECTS
        RT: GENOTYPES

    PHENOTYPIC VARIATIONS
        Notes: Added in 1980
        RT: ENVIRONMENTAL EFFECTS
        RT: PHENOTYPES

    PHENYLALANINE
        BT: AMINO ACIDS

    PHEROMONES
        BT: HORMONES
        RT: BEHAVIOUR
        RT: ENDOCRINE GLANDS
        RT: ENDOCRINOLOGY

    PHILLIPSITE
        BT: ZEOLITES

    PHOSPHATE DEPOSITS
        Notes: Use only for deposits of economic value
        BT: SUBSURFACE DEPOSITS
        RT: AUTHIGENIC MINERALS
        RT: GUANO
        RT: PHOSPHATE ROCKS

    PHOSPHATE MINERALS
        BT: MINERALS
        NT: APATITE
        NT: FRANCOLITE
        NT: MONAZITE
        RT: PHOSPHATE ROCKS
        RT: PHOSPHATES
        RT: PHOSPHORITE NODULES

    PHOSPHATE ROCKS
        BT: CHEMICAL SEDIMENTS
        RT: PHOSPHATE DEPOSITS
        RT: PHOSPHATE MINERALS
        RT: PHOSPHATES

    PHOSPHATES
        BT: PHOSPHORUS COMPOUNDS
        NT: ORTHOPHOSPHATE
        RT: ADP
        RT: AMP
        RT: CALCIUM PHOSPHATES

    PHOSPHATIZATION
        RT: PHOSPHATES

    PHOSPHORESCENCE
        BT: LUMINESCENCE
        RT: BIOLOGICAL PROPERTIES
        RT: BIOLUMINESCENCE
        RT: CHEMICAL PROPERTIES

    PHOSPHORIC ACID
        Notes: Before 1982 search also INORGANIC ACIDS
        BT: INORGANIC ACIDS
        RT: PHOSPHATES

    PHOSPHORITE
        RT: AUTHIGENIC MINERALS
        RT: PHOSPHATE ROCKS
        RT: PHOSPHORITE NODULES

    PHOSPHORITE NODULES
        BT: SEABED DEPOSITS
        RT: DEEP-SEA MINING
        RT: NODULES
        RT: PHOSPHATE DEPOSITS

    PHOSPHORUS
        BT: CHEMICAL ELEMENTS
        NT: ORGANIC PHOSPHORUS
        RT: PHOSPHORUS COMPOUNDS
        RT: PHOSPHORUS CYCLE
        RT: PHOSPHORUS ISOTOPES

    PHOSPHORUS COMPOUNDS
        NT: PHOSPHATES
        RT: CHEMICAL COMPOUNDS
        RT: FERTILIZERS
        RT: NUTRIENTS (MINERAL)

    PHOSPHORUS CYCLE
        BT: NUTRIENT CYCLES
        RT: BACTERIA
        RT: CHEMICAL CYCLES
        RT: PHOSPHATES

    PHOSPHORUS ISOTOPES
        BT: ISOTOPES
        RT: PHOSPHORUS

    PHOTOCHEMICAL REACTIONS
        Notes: Added in 1980
        BT: CHEMICAL REACTIONS
        NT: PHOTOLYSIS
        NT: PHOTOSYNTHESIS
        RT: PHOTOCHEMISTRY

    PHOTOCHEMISTRY
        BT: CHEMISTRY
        RT: PHOTOCHEMICAL REACTIONS
        RT: PHOTOLYSIS
        RT: PHOTOSYNTHESIS

    PHOTOGRAMMETRY
        BT: MEASUREMENT
        RT: AERIAL PHOTOGRAPHY
        RT: CARTOGRAPHY
        RT: CURRENT MEASUREMENT

    PHOTOGRAPHIC EQUIPMENT
        BT: EQUIPMENT
        NT: CAMERAS
        RT: AERIAL PHOTOGRAPHY
        RT: FILMS
        RT: MICROPHOTOGRAPHY

    PHOTOGRAPHS
        BT: AUDIOVISUAL MATERIAL
        NT: AERIAL PHOTOGRAPHS
        NT: UNDERWATER PHOTOGRAPHS
        RT: MICROPHOTOGRAPHY
        RT: PHOTOGRAMMETRY
        RT: PHOTOGRAPHIC EQUIPMENT

    PHOTOGRAPHY
        BT: IMAGERY
        NT: AERIAL PHOTOGRAPHY
        NT: MICROPHOTOGRAPHY
        NT: STEREOPHOTOGRAPHY
        NT: UNDERWATER PHOTOGRAPHY
        RT: CAMERAS
        RT: FILMS
        RT: HOLOGRAPHY

    PHOTOLYSIS
        Notes: Added in 1980
        BT: PHOTOCHEMICAL REACTIONS
        RT: PHOTOCHEMISTRY

    PHOTOMETERS
        BT: LIGHT MEASURING INSTRUMENTS
        NT: SPECTROPHOTOMETERS
        RT: LIGHT
        RT: LIGHT ABSORPTION
        RT: LIGHT INTENSITY

    PHOTOMETRY
        BT: LIGHT MEASUREMENT
        RT: CHEMICAL ANALYSIS
        RT: COLORIMETRIC TECHNIQUES
        RT: LIGHT

    PHOTOPERIODICITY
        RT: BIOLOGICAL RHYTHMS
        RT: BREEDING
        RT: DIAPAUSE

    PHOTOPERIODS
        Notes: Before 1982 search PHOTOPERIODICITY
        RT: CIRCADIAN RHYTHMS
        RT: DIURNAL VARIATIONS
        RT: ECOPHYSIOLOGY

    PHOTOPHORES
        Notes: Added in 1980
        BT: ANIMAL ORGANS
        RT: BIOLUMINESCENCE
        RT: FISH
        RT: LUMINOUS ORGANISMS

    PHOTORECEPTION
        Notes: Added in 1982
        BT: SENSE FUNCTIONS
        RT: LIGHT STIMULI
        RT: VISION

    PHOTORECEPTORS
        BT: SENSE ORGANS
        NT: EYES
        RT: LIGHT
        RT: VISION

    PHOTOSYNTHESIS
        BT: PHOTOCHEMICAL REACTIONS
        NT: CARBON FIXATION
        RT: BIOGEOCHEMICAL CYCLE
        RT: BIOSYNTHESIS
        RT: CARBON DIOXIDE

    PHOTOSYNTHETIC PIGMENTS
        BT: PIGMENTS
        NT: CHLOROPHYLLS
        NT: XANTHOPHYLLS
        RT: CAROTENOIDS
        RT: CHLOROPLASTS
        RT: PHOTOSYNTHESIS

    PHOTOTAXIS
        BT: TAXIS
        RT: LIGHT
        RT: LIGHT EFFECTS
        RT: LIGHT PENETRATION

    PHOTOTROPISM
        BT: TROPISM
        RT: CIRCADIAN RHYTHMS
        RT: LIGHT
        RT: LIGHT EFFECTS

    PHTHALATE ESTERS
        BT: ESTERS
        RT: CHEMICAL POLLUTANTS
        RT: CHEMICAL POLLUTION

    PHYLLOSOMAE
        Notes: Added in 1980
        BT: CRUSTACEAN LARVAE
        RT: MARINE CRUSTACEANS

    PHYLOGENETICS
        Notes: The study of evolutionary relationships. Added in 1980
        RT: BIOLOGICAL SPECIATION
        RT: EVOLUTION
        RT: PHYLOGENY

    PHYLOGENY
        RT: BIOLOGICAL SPECIATION
        RT: BIOSELECTION
        RT: EVOLUTION

    PHYSICAL LIMNOLOGY
        Notes: Before 1982 search LIMNOLOGY (PHYSICAL)
        BT: LIMNOLOGY
        RT: HYDRODYNAMICS
        RT: HYDROGRAPHY
        RT: LAKE CURRENTS

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    PHYSICAL OCEANOGRAPHY
        BT: OCEANOGRAPHY
        NT: HYDROGRAPHY
        RT: HYDRODYNAMICS
        RT: MARINE SCIENCES
        RT: METEOROLOGY

    PHYSICAL PROPERTIES
        BT: PROPERTIES
        NT: ACOUSTIC PROPERTIES
        NT: ANISOTROPY
        NT: BUOYANCY
        NT: COLLIGATIVE PROPERTIES
        NT: DENSITY
        NT: ELECTRICAL PROPERTIES
        NT: GEOTHERMAL PROPERTIES
        NT: MAGNETIC PROPERTIES
        NT: MASS
        NT: MECHANICAL PROPERTIES
        NT: OPTICAL PROPERTIES
        NT: PERMEABILITY
        NT: POROSITY
        NT: PRESSURE
        NT: SPECIFIC GRAVITY
        NT: THERMODYNAMIC PROPERTIES
        NT: TURBIDITY
        NT: WATER HARDNESS
        NT: WEIGHT
        RT: CHEMICAL PROPERTIES
        RT: DIFFUSION
        RT: ENVIRONMENTAL CHARTS

    PHYSICOCHEMICAL PROPERTIES
        BT: PROPERTIES
        RT: BIOLOGICAL PROPERTIES
        RT: CHEMICAL PROPERTIES
        RT: PHYSICAL PROPERTIES

    PHYSICS
        NT: ACOUSTICS
        NT: ATMOSPHERIC PHYSICS
        NT: BIOPHYSICS
        NT: MECHANICS
        NT: NUCLEAR PHYSICS
        NT: OPTICS
        NT: THERMODYNAMICS
        RT: ELECTROMAGNETISM
        RT: ENERGY
        RT: LIGHT

    PHYSIOGRAPHIC PROVINCES
        RT: BOTTOM TOPOGRAPHY
        RT: LANDFORMS
        RT: SUBMARINE FEATURES

    PHYSIOLOGISTS
        Notes: Added in 1980
        BT: BIOLOGISTS
        NT: ANIMAL PHYSIOLOGISTS
        NT: PLANT PHYSIOLOGISTS
        RT: DIRECTORIES
        RT: PHYSIOLOGY

    PHYSIOLOGY
        BT: BIOLOGY
        NT: ANIMAL PHYSIOLOGY
        NT: DIVING PHYSIOLOGY
        NT: ECOPHYSIOLOGY
        NT: ELECTROPHYSIOLOGY
        NT: ENDOCRINOLOGY
        NT: HUMAN PHYSIOLOGY
        NT: NEUROPHYSIOLOGY
        NT: PLANT PHYSIOLOGY
        RT: ANATOMY
        RT: BIOCHEMISTRY
        RT: BIOPHYSICS

    PHYTOBENTHOS
        BT: BENTHOS
        RT: ALGOLOGY
        RT: AQUATIC PLANTS
        RT: ECOLOGICAL ZONATION

    PHYTOHORMONES
        Notes: Before 1982 search HORMONES
        BT: HORMONES
        RT: AQUATIC PLANTS
        RT: AUXINS
        RT: PLANT PHYSIOLOGY

    PHYTOPLANKTON
        BT: PLANKTON
        RT: ALGAL BLOOMS
        RT: ALGOLOGISTS
        RT: ALGOLOGY

    PHYTOPLANKTON CULTURE
        BT: ALGAL CULTURE
        RT: CELL CULTURE
        RT: CONTINUOUS CULTURE
        RT: CONTROLLED CONDITIONS

    PHYTOSOCIOLOGY
        BT: ECOLOGY
        RT: AQUATIC PLANTS
        RT: BIOGEOGRAPHY
        RT: BOTANY

    PIERS
        BT: COASTAL STRUCTURES

    PIEZOELECTRIC TRANSDUCERS
        BT: TRANSDUCERS
        RT: ACOUSTIC TRANSDUCERS
        RT: HYDROPHONES

    PIGGING
        RT: CLEANING
        RT: PIPELINE PIGS

    PIGMENTS
        BT: GLYCOSIDES
        NT: CHROMATIC PIGMENTS
        NT: PHOTOSYNTHETIC PIGMENTS
        NT: RESPIRATORY PIGMENTS
        NT: VISUAL PIGMENTS
        RT: CHROMATIC BEHAVIOUR
        RT: CHROMATOPHORES
        RT: DISCOLOURATION

    PILE DRIVING
        RT: BEARING CAPACITY
        RT: GEOTECHNOLOGY
        RT: PILES

    PILED PLATFORMS
        BT: FIXED PLATFORMS
        RT: GUYED TOWERS

    PILES
        Notes: Before 1986 search also PILES (FOUNDATIONS) and PILING
        BT: FOUNDATIONS
        RT: GEOTECHNOLOGY
        RT: LEE EDDIES
        RT: PILE DRIVING

    PILLOW LAVA
        BT: LAVA
        RT: PALAGONITE
        RT: PILLOW STRUCTURES

    PILLOW STRUCTURES
        BT: SEDIMENTARY STRUCTURES
        RT: PILLOW LAVA

    PILOT CHARTS
        BT: NAVIGATIONAL CHARTS
        RT: SAILING DIRECTIONS

    PINEAL ORGAN
        BT: BRAIN
        RT: NEUROSECRETION
        RT: NEUROSECRETORY SYSTEM

    PINGERS
        BT: SOUND GENERATORS
        RT: ACOUSTIC TRACKING SYSTEMS
        RT: ELECTROACOUSTIC DEVICES
        RT: SWALLOW FLOATS

    PIPE BUCKLING
        RT: DEFORMATION

    PIPE LAYING
        Notes: Pipeline construction from barges
        BT: PIPELINE CONSTRUCTION

    PIPE STRINGERS
        RT: PIPELAYING BARGES

    PIPELAYING BARGES
        BT: BARGES
        RT: PIPE STRINGERS

    PIPELINE CONSTRUCTION
        BT: CONSTRUCTION
        NT: BOTTOM TOW
        NT: PIPE LAYING
        RT: ANCHORING
        RT: BURYING
        RT: COATING PROCESSES

    PIPELINE CROSSING
        RT: PIPELINE CONSTRUCTION
        RT: PIPELINES

    PIPELINE PIGS
        RT: PIGGING

    PIPELINE PROTECTION
        BT: EROSION CONTROL
        RT: ARTIFICIAL SEAWEED
        RT: BURYING
        RT: PIPELINES

    PIPELINES
        BT: UNDERWATER STRUCTURES
        NT: FLOWLINES
        NT: GATHERING LINES
        RT: BURYING
        RT: EXPLOITATION
        RT: GAS TERMINALS

    PIPES
        Notes: Before 1986 search also PIPE
        NT: RISER PIPES
        RT: HOSES
        RT: TUBING

    PISTON CORERS
        Notes: Before 1986 use also PISTON SAMPLERS
        BT: CORERS

    PITCH RESONANCE
        BT: RESONANCE
        RT: BUOY MOTION EFFECTS
        RT: PITCHING

    PITCH RESPONSE
        BT: DYNAMIC RESPONSE
        RT: BUOY MOTION EFFECTS
        RT: PITCHING

    PITCHING
        BT: SHIP MOTION
        RT: BUOY MOTION
        RT: BUOY MOTION EFFECTS
        RT: DYNAMIC RESPONSE

    PITS
        Notes: Added in 1980
        RT: AQUACULTURE FACILITIES
        RT: LAKES
        RT: SPORT FISHING

    PITUITARY GLAND
        BT: ENDOCRINE GLANDS
        RT: HORMONES
        RT: HYPOPHYSECTOMY

    PLACENTA
        Notes: Added in 1980
        RT: FOETUS
        RT: OVARIES
        RT: PREGNANCY

    PLACER MINING
        BT: MINING
        RT: MINERAL DEPOSITS
        RT: MINERAL EXPLORATION
        RT: PLACERS

    PLACERS
        BT: SEABED DEPOSITS
        NT: DIAMONDS
        RT: ARENITES
        RT: BARITE
        RT: CASSITERITE

    PLAGIOCLASE
        BT: FELDSPARS

    PLAINS
        BT: LANDFORMS
        RT: ABYSSAL PLAINS
        RT: FLOOD PLAINS

    PLANETARY ATMOSPHERES
        NT: EARTH ATMOSPHERE

    PLANETARY VORTICITY
        BT: VORTICITY
        RT: CORIOLIS PARAMETERS
        RT: WESTWARD INTENSIFICATION

    PLANETARY WAVES
        RT: ATMOSPHERIC MOTION
        RT: EQUATORIAL DYNAMICS
        RT: FLUID MOTION

    PLANETARY WINDS
        BT: WINDS
        NT: MONSOONS
        NT: TRADE WINDS
        NT: WESTERLIES
        RT: ATMOSPHERIC CIRCULATION

    PLANKTON
        BT: AQUATIC COMMUNITIES
        NT: CRYOPLANKTON
        NT: NANNOPLANKTON
        NT: PHYTOPLANKTON
        NT: ZOOPLANKTON
        RT: AIR-WATER EXCHANGES
        RT: BIOLOGICAL PRODUCTION
        RT: ENTRAINMENT

    PLANKTON COLLECTING DEVICES
        BT: COLLECTING DEVICES
        RT: AVOIDANCE REACTIONS
        RT: ESCAPEMENT
        RT: FISHING NETS

    PLANKTON EQUIVALENTS
        BT: POPULATION FACTORS
        RT: BIOCHEMICAL COMPOSITION
        RT: BIOLOGICAL PRODUCTION
        RT: BIOMASS

    PLANKTON FEEDERS
        BT: HETEROTROPHIC ORGANISMS
        RT: CARNIVORES
        RT: FEEDING BEHAVIOUR
        RT: FILTER FEEDERS

    PLANKTON SURVEYS
        Notes: Added in 1980
        BT: BIOLOGICAL SURVEYS
        NT: ICHTHYOPLANKTON SURVEYS
        RT: PLANKTON
        RT: PLANKTON COLLECTING DEVICES
        RT: SORTING CENTRES

    PLANKTONOLOGY
        BT: ECOLOGY
        RT: ECOLOGISTS
        RT: FOOD CHAINS
        RT: ICHTHYOPLANKTON

    PLANNING
        Notes: Added in 1980
        NT: LONG-TERM PLANNING
        NT: NATIONAL PLANNING
        NT: REGIONAL PLANNING
        NT: SHORT-TERM PLANNING
        RT: CRUISE PROGRAMMES
        RT: CRUISES
        RT: ECONOMICS

    PLANT CONTROL
        Notes: Chemical, biological and mechanical control of aquatic weeds and injurious algae
        BT: CONTROL
        RT: ALGICIDES
        RT: BIOLOGICAL CONTROL
        RT: CHEMICAL CONTROL

    PLANT CULTURE
        Notes: Applies only to culture of aquatic macrophytes. Added in 1980
        BT: AQUACULTURE
        RT: AGROPISCICULTURE
        RT: AQUACULTURE TECHNIQUES
        RT: BOTANISTS

    PLANT DISEASES
        Notes: Added in 1980
        BT: DISEASES
        RT: AQUATIC PLANTS
        RT: PARASITIC DISEASES
        RT: PEST CONTROL

    PLANT METABOLISM
        Notes: Before 1982 search METABOLISM
        BT: METABOLISM
        RT: PHOTOSYNTHESIS
        RT: PLANT PHYSIOLOGY

    PLANT MORPHOLOGY
        Notes: Before 1982 search MORPHOLOGY (ORGANISMS)
        BT: ORGANISM MORPHOLOGY
        RT: AQUATIC PLANTS
        RT: BUDS
        RT: PLANT ORGANS

    PLANT NUTRITION
        BT: NUTRITION
        RT: AUTOTROPHY
        RT: FERTILITY
        RT: NUTRIENT DEFICIENCY

    PLANT ORGANS
        Notes: Added in 1980
        BT: BODY ORGANS
        NT: HOLDFASTS
        NT: LEAVES
        NT: PLANT REPRODUCTIVE STRUCTURES
        NT: RHIZOMES
        NT: ROOTS
        NT: STEMS
        NT: THALLUS
        RT: BUDS
        RT: PLANT MORPHOLOGY
        RT: PLANT PHYSIOLOGY

    PLANT PHYSIOLOGISTS
        Notes: Added in 1980
        BT: PHYSIOLOGISTS
        RT: ALGOLOGISTS
        RT: BOTANISTS
        RT: DIRECTORIES

    PLANT PHYSIOLOGY
        Notes: Before 1982 search PHYSIOLOGY
        BT: PHYSIOLOGY
        RT: AESTIVATION
        RT: ALGOLOGY
        RT: AQUATIC PLANTS

    PLANT POPULATIONS
        Notes: Added in 1982
        BT: NATURAL POPULATIONS
        RT: AQUATIC PLANTS
        RT: SEA GRASS
        RT: WEEDS

    PLANT REPRODUCTIVE STRUCTURES
        Notes: Added in 1982
        BT: PLANT ORGANS
        NT: TURIONS
        RT: ASEXUAL REPRODUCTION
        RT: POLLEN
        RT: POLLINATION

    PLANT UTILIZATION
        Notes: Added in 1982
        BT: UTILIZATION
        RT: AQUATIC DRUGS
        RT: AQUATIC PLANTS
        RT: FERTILIZERS

    PLASTIC COATINGS
        BT: COATING MATERIALS
        RT: EPOXY RESINS
        RT: PLASTICS

    PLASTIC DEBRIS
        BT: SOLID IMPURITIES
        RT: PLASTICS

    PLASTIC FLOW
        RT: DEFORMATION
        RT: PLASTICITY
        RT: RHEOLOGY

    PLASTICITY
        RT: COMPRESSIBILITY
        RT: DEFORMATION
        RT: ELASTICITY

    PLASTICS
        BT: MATERIALS
        NT: ACRYLICS
        NT: GLASS-REINFORCED PLASTICS
        RT: PLASTIC COATINGS
        RT: PLASTIC DEBRIS
        RT: SOLID IMPURITIES

    PLATE BOUNDARIES
        NT: CONVERGING PLATE BOUNDARIES
        NT: DIVERGING PLATE BOUNDARIES
        NT: TRANSFORM PLATE BOUNDARIES
        RT: ACTIVE MARGINS
        RT: BOUNDARIES
        RT: PLATE MARGINS

    PLATE CONVERGENCE
        RT: ACTIVE MARGINS
        RT: CONVERGENCE
        RT: ISLAND ARCS

    PLATE DIVERGENCE
        RT: CRUSTAL ACCRETION
        RT: DIVERGENCE
        RT: DIVERGING PLATE BOUNDARIES

    PLATE MARGINS
        RT: ACTIVE MARGINS
        RT: PLATE BOUNDARIES
        RT: PLATES

    PLATE MOTION
        RT: PLATE CONVERGENCE
        RT: PLATE DIVERGENCE
        RT: PLATE MOTION

    PLATE TECTONICS
        BT: TECTONICS
        RT: ASTHENOSPHERE
        RT: BENIOFF ZONE
        RT: CONTINENTAL DRIFT

    PLATEAUX
        BT: LANDFORMS
        RT: RELIEF FORMS
        RT: SUBMARINE PLATEAUX

    PLATES
        BT: EARTH STRUCTURE
        RT: LITHOSPHERE
        RT: OBDUCTION
        RT: PLATE BOUNDARIES

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    PLATFORMS (GEOLOGY)
        RT: CRATONS

    PLATINUM
        BT: CHEMICAL ELEMENTS
        RT: HEAVY METALS
        RT: METALS
        RT: PLACERS

    PLATINUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: PLATINUM

    PLATINUM ISOTOPES
        BT: ISOTOPES
        RT: PLATINUM

    PLAYAS
        Notes: Use for continental/inland sabkhas
        BT: SABKHAS
        RT: ARID ENVIRONMENTS
        RT: LAKE DEPOSITS
        RT: SALT DEPOSITS

    PLEISTOCENE
        Notes: Before 1982 search PLEISTOCENE EPOCH
        BT: QUATERNARY
        RT: ICE AGES
        RT: INTERGLACIAL PERIODS
        RT: PLIO-PLEISTOCENE BOUNDARY

    PLEUSTON
        Notes: Freefloating plants
        BT: AQUATIC COMMUNITIES
        RT: AIR-WATER INTERFACE
        RT: AQUATIC PLANTS
        RT: WEEDS

    PLIO-PLEISTOCENE BOUNDARY
        RT: PLEISTOCENE
        RT: PLIOCENE

    PLIOCENE
        Notes: Before 1982 search PLIOCENE EPOCH
        BT: NEOGENE
        RT: PLIO-PLEISTOCENE BOUNDARY

    PLOTTING
        RT: BATHYMETRIC DATA
        RT: MAPPING
        RT: SOUNDINGS

    PLOUGHMARKS
        BT: BED FORMS
        RT: GLACIAL EROSION
        RT: GLACIAL FEATURES
        RT: ICEBERG SCOURING

    PLOUGHS
        RT: TRENCHING

    PLUMBLINE DEFLECTION
        RT: DEFLECTION
        RT: GEODESY
        RT: GRAVITY

    PLUMES
        Notes: Before 1982 search PLUMES (AQUATIC). Use of a more specific term is recommended
        BT: FLUID FLOW
        NT: CHEMICAL PLUMES
        NT: MANTLE PLUMES
        NT: RIVER PLUMES
        NT: THERMAL PLUMES
        RT: BUOYANT JETS
        RT: TURBULENT ENTRAINMENT
        RT: WATER MIXING

    PLUTONIUM
        BT: CHEMICAL ELEMENTS
        RT: ACTINIDES
        RT: PLUTONIUM COMPOUNDS
        RT: PLUTONIUM ISOTOPES

    PLUTONIUM COMPOUNDS
        BT: ACTINIDE COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: PLUTONIUM

    PLUTONIUM ISOTOPES
        BT: ISOTOPES
        RT: PLUTONIUM

    PLUTONS
        BT: IGNEOUS ROCKS
        RT: BATHOLITHS
        RT: IGNEOUS INTRUSIONS

    POCK MARKS
        BT: BED FORMS
        RT: GAS TURBATION
        RT: MICROTOPOGRAPHY

    POIKILOTHERMY
        Notes: Added in 1980
        BT: BIOLOGICAL PROPERTIES
        RT: BODY TEMPERATURE
        RT: HOMOIOTHERMY
        RT: THERMOREGULATION

    POISONOUS FISH
        BT: FISH
        RT: CIGUATERA
        RT: CIGUATOXIN
        RT: FOOD CHAINS

    POISONOUS ORGANISMS
        BT: AQUATIC ORGANISMS
        RT: ALLERGIC REACTIONS
        RT: BIOLOGICAL POISONS
        RT: FOOD CHAINS

    POISSON'S EQUATION
        BT: EQUATIONS
        RT: HARMONIC FUNCTIONS
        RT: LAPLACE EQUATION

    POISSON'S RATIO
        RT: COMPRESSIVE STRENGTH
        RT: ELASTIC CONSTANTS
        RT: ELASTICITY

    POLAR AIR MASSES
        BT: AIR MASSES
        RT: ANTARCTIC FRONT
        RT: POLAR METEOROLOGY

    POLAR CONVERGENCES
        BT: OCEANIC CONVERGENCES
        NT: ANTARCTIC CONVERGENCE
        NT: NORTH ATLANTIC POLAR FRONT

    POLAR EXPLORATION
        BT: EXPLORATION
        RT: GEOGRAPHICAL EXPLORATION
        RT: ICE
        RT: NAVIGATION IN ICE

    POLAR FRONTS
        Notes: Use only for semi-permanent front separating air masses of tropical and polar origin
        BT: ATMOSPHERIC CONVERGENCES
        RT: CYCLONES
        RT: FRONTS

    POLAR METEOROLOGY
        BT: METEOROLOGY
        RT: ANTARCTIC FRONT
        RT: ARCTIC ZONE
        RT: POLAR AIR MASSES

    POLAR OCEANOGRAPHY
        BT: OCEANOGRAPHY
        RT: ARCTIC ZONE
        RT: ICE EDGE
        RT: ICE MELTING

    POLAR WANDERING
        RT: CONTINENTAL DRIFT
        RT: EARTH ROTATION
        RT: PALAEOLATITUDE

    POLAR WATERS
        RT: POLAR OCEANOGRAPHY
        RT: POLAR ZONES

    POLAR ZONES
        BT: CLIMATIC ZONES
        NT: ANTARCTIC ZONE
        NT: ARCTIC ZONE
        RT: COLD RESISTANCE
        RT: CRYOBIOLOGY
        RT: CRYOPLANKTON

    POLARIZATION
        RT: ELECTROLYSIS
        RT: ELECTROMAGNETIC RADIATION
        RT: LIGHT

    POLAROGRAPHY
        BT: ANALYTICAL TECHNIQUES
        RT: ELECTROANALYSIS
        RT: ELECTROLYSIS
        RT: REDOX REACTIONS

    POLDERS
        RT: EMBANKMENTS
        RT: LAND RECLAMATION
        RT: SEA LEVEL

    POLE-LINE FISHING
        BT: LINE FISHING
        RT: ANGLING
        RT: DEMERSAL FISHERIES
        RT: FISHING

    POLE POSITIONS
        RT: GEOMAGNETIC FIELD
        RT: MAGNETIC REVERSALS
        RT: PALAEOMAGNETISM

    POLE TIDES
        BT: TIDES
        RT: CHANDLER WOBBLE
        RT: LONG-PERIOD TIDES
        RT: TIDAL CONSTITUENTS

    POLICIES
        Notes: Use of a more specific term is recommended. Added in 1980
        NT: FISHERY POLICY
        NT: INTERNATIONAL POLICY
        NT: NAVIGATION POLICY
        NT: OCEAN POLICY
        NT: WATER POLICY
        RT: GOVERNMENTS
        RT: LEGISLATION
        RT: MANAGEMENT

    POLITICAL ASPECTS
        Notes: Added in 1980
        RT: COASTAL STATES
        RT: ECONOMICS
        RT: EXTENDED JURISDICTION

    POLLEN
        Notes: Added in 1980
        RT: AQUATIC PLANTS
        RT: ATMOSPHERIC PARTICULATES
        RT: FOSSIL POLLEN

    POLLINATION
        Notes: Added in 1980
        RT: AQUATIC PLANTS
        RT: PLANT REPRODUCTIVE STRUCTURES
        RT: POLLEN

    POLLUTANT IDENTIFICATION
        BT: IDENTIFICATION
        RT: BIOACCUMULATION
        RT: BIOASSAYS
        RT: POLLUTANTS

    POLLUTANT PERSISTENCE
        Notes: Added in 1982
        BT: PERSISTENCE
        RT: FATE
        RT: POLLUTANTS
        RT: POLLUTION DATA

    POLLUTANTS
        Notes: Harmful substances of chemical, physical or biological origin
        NT: BIOLOGICAL POLLUTANTS
        NT: CHEMICAL POLLUTANTS
        NT: RADIOACTIVE POLLUTANTS
        NT: SOLID IMPURITIES
        RT: AIR POLLUTION
        RT: BODY BURDEN
        RT: BRACKISHWATER POLLUTION

    POLLUTION
        Notes: Use of a more specific term is recommended. Added in 1980
        NT: AGRICULTURAL POLLUTION
        NT: AIR POLLUTION
        NT: CHEMICAL POLLUTION
        NT: OIL POLLUTION
        NT: RADIOACTIVE CONTAMINATION
        NT: SEDIMENT POLLUTION
        NT: THERMAL POLLUTION
        NT: WATER POLLUTION
        RT: BASELINE STUDIES
        RT: CONTIGUOUS ZONES
        RT: ECOLOGICAL CRISIS

    POLLUTION CONTROL
        Notes: Control of pollution in aquatic environment only
        BT: CONTROL
        NT: CONTAINMENT
        RT: AGRICULTURAL POLLUTION
        RT: AIR POLLUTION
        RT: AQUACULTURE EFFLUENTS

    POLLUTION CONVENTION
        BT: INTERNATIONAL AGREEMENTS
        RT: ENVIRONMENTAL LEGISLATION
        RT: POLLUTION
        RT: POLLUTION CONTROL

    POLLUTION DATA
        BT: DATA
        RT: POLLUTANT PERSISTENCE
        RT: POLLUTION
        RT: POLLUTION DISPERSION

    POLLUTION DETECTION
        BT: DETECTION
        RT: CHEMICAL ANALYSIS
        RT: MICROBIOLOGICAL ANALYSIS
        RT: POLLUTION

    POLLUTION DISPERSION
        Notes: Added in 1982
        RT: POLLUTION DATA
        RT: POLLUTION MONITORING
        RT: POLLUTION SURVEYS

    POLLUTION EFFECTS
        Notes: Pollution effects on aquatic environment, organisms, fisheries and human health
        RT: ANOXIC CONDITIONS
        RT: ANTHROPOGENIC FACTORS
        RT: BASELINE STUDIES

    POLLUTION INDICATORS
        RT: INDICATOR SPECIES
        RT: INDICATORS
        RT: POLLUTION MONITORING

    POLLUTION LEGISLATION
        Notes: Added in 1980
        BT: ENVIRONMENTAL LEGISLATION
        RT: ENVIRONMENT MANAGEMENT
        RT: ENVIRONMENTAL PROTECTION
        RT: POLLUTION

    POLLUTION MAPS
        Notes: Before 1982 search POLLUTION CHARTS. Distributional charts of pollutants or polluted areas in aquatic environment
        BT: MAPS
        RT: POLLUTANTS
        RT: POLLUTION
        RT: POLLUTION MONITORING

    POLLUTION MONITORING
        BT: MONITORING
        RT: BRACKISHWATER POLLUTION
        RT: ENVIRONMENT MANAGEMENT
        RT: ENVIRONMENTAL LEGISLATION

    POLLUTION SURVEYS
        Notes: Surveys of polluted areas of aquatic environment
        BT: SURVEYS
        RT: ENVIRONMENT MANAGEMENT
        RT: ENVIRONMENTAL SURVEYS
        RT: POLLUTION

    POLLUTION TOLERANCE
        Notes: Added in 1980
        BT: TOLERANCE
        RT: BIOACCUMULATION
        RT: LETHAL EFFECTS
        RT: POLLUTION

    POLONIUM
        BT: CHEMICAL ELEMENTS
        RT: METALS
        RT: POLONIUM COMPOUNDS
        RT: POLONIUM ISOTOPES

    POLONIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: POLONIUM

    POLONIUM ISOTOPES
        BT: ISOTOPES
        RT: POLONIUM

    POLYCULTURE
        BT: AQUACULTURE TECHNIQUES
        RT: BRACKISHWATER AQUACULTURE
        RT: CRAB CULTURE
        RT: CULTURES

    POLYHALITE
        BT: SULPHATE MINERALS
        RT: GYPSUM

    POLYMERIZATION
        Notes: Added in 1982
        BT: CHEMICAL REACTIONS
        RT: DNA
        RT: POLYMERS
        RT: RNA

    POLYMERS
        RT: CHEMICAL COMPOUNDS
        RT: POLYMERIZATION

    POLYNYAS
        RT: FLOATING ICE
        RT: ICE CANOPY
        RT: LEADS

    POLYPEPTIDES
        BT: PEPTIDES

    POLYPLOIDS
        RT: CHROMOSOMES
        RT: GENETICS

    POLYPS
        Notes: Cylindrical sedentary body form in Hydrozoa and Anthozoa
        RT: BUDDING
        RT: BUDS
        RT: CORAL REEFS

    POLYSACCHARIDES
        BT: SACCHARIDES
        NT: AGAROSE
        NT: ALGINIC ACID
        NT: CELLULOSE
        NT: MUCOPOLYSACCHARIDES
        NT: STARCH
        RT: AGAR

    POLYSPERMY
        RT: BIOLOGICAL FERTILIZATION
        RT: SEXUAL CELLS
        RT: SEXUAL REPRODUCTION

    POLYUNSATURATED FATTY ACIDS
        BT: FATTY ACIDS
        RT: POLYUNSATURATED HYDROCARBONS

    POLYUNSATURATED HYDROCARBONS
        BT: UNSATURATED HYDROCARBONS
        NT: SQUALENE
        NT: TERPENES
        RT: POLYUNSATURATED FATTY ACIDS

    POND CONSTRUCTION
        Notes: Referring to design and hydrotechnical characteristics of pond construction mainly for aquaculture
        RT: DAMS
        RT: FISH PONDS
        RT: HYDRAULIC ENGINEERING

    POND CULTURE
        BT: AQUACULTURE TECHNIQUES
        RT: AGROPISCICULTURE
        RT: AIR-BREATHING FISH
        RT: AQUACULTURE EFFLUENTS

    PONDS
        BT: INLAND WATERS
        NT: COOLING PONDS
        NT: FISH PONDS
        NT: SEWAGE PONDS
        NT: TEMPORARY PONDS
        RT: DAMS
        RT: FLOOD CONTROL
        RT: FRESH WATER

    PONTOONS
        BT: FLOATING STRUCTURES
        RT: BARGES
        RT: BRIDGES
        RT: CRANES

    POPULATION CHARACTERISTICS
        NT: BIOMASS
        NT: POPULATION DENSITY
        NT: POPULATION NUMBER
        NT: POPULATION STRUCTURE
        RT: ANIMAL POPULATIONS
        RT: NATURAL POPULATIONS
        RT: POPULATION DYNAMICS

    POPULATION CONTROL
        Notes: Inhibitive action on populations by biological (introduction, exclusion or removal of organisms), chemical or physical means
        BT: CONTROL
        RT: BIOTIC PRESSURE
        RT: DISEASES
        RT: INTRODUCED SPECIES

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    POPULATION DENSITY
        BT: POPULATION CHARACTERISTICS
        RT: BIOMASS
        RT: BIOTIC PRESSURE
        RT: CATCH/EFFORT

    POPULATION DYNAMICS
        Notes: Studies of changes that take place during the life span of a population
        RT: CATCH STATISTICS
        RT: FISHERY BIOLOGY
        RT: GROWTH CURVES

    POPULATION FACTORS
        NT: CONDITION FACTOR
        NT: FISH CONVERSION FACTORS
        NT: LENGTH-WEIGHT RELATIONSHIPS
        NT: PLANKTON EQUIVALENTS
        RT: NATURAL POPULATIONS
        RT: POPULATION CHARACTERISTICS
        RT: POPULATION DYNAMICS

    POPULATION FUNCTIONS
        Notes: Including dynamic parameters (rates)
        NT: GROWTH
        NT: MORTALITY
        NT: RECRUITMENT
        RT: DENSITY DEPENDENCE
        RT: NATURAL POPULATIONS
        RT: POPULATION CHARACTERISTICS

    POPULATION GENETICS
        Notes: Relative frequency of hereditary characters and alleles in samples of a population or populations of a given species
        BT: GENETICS
        RT: BIOLOGICAL SPECIATION
        RT: BIOPOLYMORPHISM
        RT: EVOLUTION

    POPULATION NUMBER
        BT: POPULATION CHARACTERISTICS
        RT: ABUNDANCE
        RT: BIOMASS
        RT: CATCH/EFFORT

    POPULATION STRUCTURE
        Notes: Composition by size, sex and age groups of a breeding population (exploited or unexploited)
        BT: POPULATION CHARACTERISTICS
        NT: AGE COMPOSITION
        NT: SEX RATIO
        NT: SIZE DISTRIBUTION
        RT: LENGTH-WEIGHT RELATIONSHIPS
        RT: NATURAL POPULATIONS
        RT: POPULATION DYNAMICS

    PORCELLANITE
        BT: SILICEOUS ROCKS
        RT: SEDIMENTARY ROCKS

    PORE PRESSURE
        BT: PRESSURE
        RT: FLUIDIZED SEDIMENT FLOW
        RT: GEOTECHNICAL DATA
        RT: HYDROSTATIC PRESSURE

    PORE WATER
        Notes: Before 1983 search also INTERSTITIAL WATER
        BT: WATER
        RT: DEWATERING
        RT: FLUIDIZED SEDIMENT FLOW
        RT: GEOCHEMISTRY

    PORE WATER SAMPLERS
        BT: SEDIMENT SAMPLERS
        RT: GEOCHEMISTRY
        RT: GEOLOGICAL EQUIPMENT
        RT: PORE WATER

    POROSITY
        BT: PHYSICAL PROPERTIES
        RT: CAPILLARITY
        RT: COMPACTION
        RT: COMPRESSIBILITY

    PORPHYRINS
        BT: GLYCOSIDES
        RT: CHLOROPHYLLS
        RT: PIGMENTS

    PORT INSTALLATIONS
        BT: COASTAL STRUCTURES
        RT: ARTIFICIAL HARBOURS
        RT: COASTAL ENGINEERING
        RT: COASTAL INLETS

    POSITION FIXING
        NT: INERTIAL NAVIGATION
        NT: RADAR NAVIGATION
        NT: RADIO NAVIGATION
        NT: SATELLITE NAVIGATION
        NT: SOFAR
        RT: GEOGRAPHICAL COORDINATES
        RT: LATITUDE
        RT: LOCATING

    POSITIONING SYSTEMS
        Notes: Systems for keeping ships, mobile platforms etc. on station relative to a point on the seabed
        NT: DYNAMIC POSITIONING
        RT: ACOUSTIC BEACONS
        RT: BERTHING
        RT: DRILLING VESSELS

    POT FISHING
        BT: CATCHING METHODS
        RT: CEPHALOPOD FISHERIES
        RT: POTS

    POTADROMOUS MIGRATIONS
        BT: MIGRATIONS
        RT: ANADROMOUS MIGRATIONS
        RT: CATADROMOUS MIGRATIONS
        RT: FRESHWATER FISH

    POTASH DEPOSITS
        RT: SUBSURFACE DEPOSITS

    POTASSIUM
        BT: CHEMICAL ELEMENTS
        RT: ALKALI METALS
        RT: DISSOLVED CHEMICALS
        RT: POTASSIUM COMPOUNDS

    POTASSIUM-ARGON DATING
        BT: RADIOMETRIC DATING
        RT: ARGON ISOTOPES
        RT: POTASSIUM ISOTOPES

    POTASSIUM COMPOUNDS
        RT: ALKALI METAL COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: POTASSIUM

    POTASSIUM ISOTOPES
        BT: ISOTOPES
        RT: POTASSIUM
        RT: POTASSIUM-ARGON DATING

    POTENTIAL DENSITY
        Notes: Use for potential density of seawater (sigma-O)
        BT: WATER DENSITY
        RT: ADIABATIC PROCESSES
        RT: IN SITU DENSITY
        RT: POTENTIAL TEMPERATURE

    POTENTIAL ENERGY
        BT: ENERGY
        NT: DYNAMIC HEIGHT
        RT: FROUDE NUMBER
        RT: KINETIC ENERGY

    POTENTIAL FLOW
        BT: FLUID FLOW
        RT: VORTICITY

    POTENTIAL RESOURCES
        BT: RESOURCES
        RT: EXPLORATORY FISHING
        RT: FISHERY DEVELOPMENT
        RT: FISHERY RESOURCES

    POTENTIAL TEMPERATURE
        BT: TEMPERATURE
        RT: ADIABATIC LAPSE RATES
        RT: ADIABATIC PROCESSES
        RT: ADIABATIC TEMPERATURE GRADIENT

    POTENTIAL VORTICITY
        BT: VORTICITY
        RT: BAROCLINIC INSTABILITY
        RT: BAROTROPIC INSTABILITY

    POTENTIAL YIELD
        BT: YIELD
        RT: POTENTIAL RESOURCES
        RT: UNCONVENTIONAL RESOURCES

    POTS
        BT: FISHING GEAR
        RT: BARRIERS
        RT: FISHING BARRIERS
        RT: POT FISHING

    POWDERED PRODUCTS
        BT: PROCESSED FISHERY PRODUCTS
        NT: FISH MEAL
        RT: ANIMAL NUTRITION
        RT: BYPRODUCTS
        RT: FEED

    POWER CABLES
        BT: ELECTRIC CABLES
        RT: ELECTRIC POWER SOURCES
        RT: UMBILICALS

    POWER CONSUMPTION
        RT: ELECTRIC POWER SOURCES
        RT: ELECTRICITY
        RT: ELECTRONIC EQUIPMENT

    POWER FROM THE SEA
        BT: ENERGY RESOURCES
        NT: CURRENT POWER
        NT: ELECTROMAGNETIC POWER
        NT: SALINITY POWER
        NT: THERMAL POWER
        NT: TIDAL POWER
        NT: WAVE POWER
        RT: GEOTHERMAL POWER
        RT: RENEWABLE RESOURCES
        RT: SOLAR POWER

    POWER PLANTS
        NT: FOSSIL FUELED POWER PLANTS
        NT: HYDROELECTRIC POWER PLANTS
        NT: NUCLEAR POWER PLANTS
        RT: COOLING PONDS
        RT: COOLING WATER
        RT: DESALINATION

    PRACTICAL SALINITY SCALE
        Notes: World standard for salinity data
        BT: SALINITY SCALES
        RT: SALINITY
        RT: STANDARDS

    PRANDTL NUMBER
        RT: DIMENSIONLESS NUMBERS
        RT: FORCED CONVECTION
        RT: HEAT TRANSFER

    PRASEODYMIUM
        BT: CHEMICAL ELEMENTS
        RT: PRASEODYMIUM COMPOUNDS
        RT: PRASEODYMIUM ISOTOPES
        RT: RARE EARTHS

    PRASEODYMIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: PRASEODYMIUM

    PRASEODYMIUM ISOTOPES
        BT: ISOTOPES
        RT: PRASEODYMIUM

    PRAWN CULTURE
        Notes: Before 1982 search CRUSTACEAN CULTURE. Restricted to rearing of freshwater prawns
        BT: CRUSTACEAN CULTURE
        RT: FRESHWATER AQUACULTURE
        RT: HATCHERIES
        RT: POLYCULTURE

    PRECAMBRIAN
        Notes: Before 1982 search PRECAMBRIAN ERA
        BT: GEOLOGICAL TIME

    PREDATION
        Notes: Including predator/prey relationship
        BT: INTERSPECIFIC RELATIONSHIPS
        NT: PREY SELECTION
        RT: ASSOCIATED SPECIES
        RT: CAMOUFLAGE
        RT: CYCLOMORPHOSIS

    PREDATOR CONTROL
        BT: CONTROL
        RT: AQUACULTURE
        RT: BIOLOGICAL CONTROL
        RT: BOTTOM CULTURE

    PREDATORS
        BT: HETEROTROPHIC ORGANISMS
        RT: CANNIBALISM
        RT: CARNIVORES
        RT: COMPETITORS

    PREDICTION
        Notes: Used only as a qualifier
        NT: CLIMATE PREDICTION
        NT: CURRENT PREDICTION
        NT: EARTHQUAKE PREDICTION
        NT: FLOOD FORECASTING
        NT: ICE FORECASTING
        NT: STORM SURGE PREDICTION
        NT: TIDAL PREDICTION
        NT: TSUNAMI PREDICTION
        NT: WAVE PREDICTING
        NT: WEATHER FORECASTING
        NT: YIELD PREDICTIONS
        RT: ALMANACS
        RT: APPROXIMATION
        RT: CRITICAL PATH METHOD

    PREGNANCY
        Notes: Added in 1980
        RT: AQUATIC MAMMALS
        RT: PARTURITION
        RT: PLACENTA

    PRESERVATION (FISHERY PRODUCTS)
        Notes: Methods for preserving fish and other fisheries products
        RT: CODEX STANDARDS
        RT: FISH HANDLING
        RT: FISH SPOILAGE

    PRESERVATIVES
        Notes: Added in 1980
        RT: ADDITIVES
        RT: AGENTS
        RT: ANTICOAGULANTS

    PRESSURE
        BT: PHYSICAL PROPERTIES
        NT: ATMOSPHERIC PRESSURE
        NT: BLOOD PRESSURE
        NT: HYDROSTATIC PRESSURE
        NT: OSMOTIC PRESSURE
        NT: PORE PRESSURE
        NT: SOUND PRESSURE
        NT: VAPOUR PRESSURE
        RT: BAROMETERS
        RT: BIOTIC PRESSURE
        RT: COMPRESSION

    PRESSURE EFFECTS
        Notes: Hydrostatic influence upon behaviour of aquatic organisms
        BT: ENVIRONMENTAL EFFECTS
        NT: HIGH PRESSURE EFFECTS
        RT: BEHAVIOUR
        RT: DIVING
        RT: DIVING PHYSIOLOGY

    PRESSURE FIELD
        RT: ATMOSPHERIC PRESSURE
        RT: FIELDS
        RT: HYDROSTATIC PRESSURE

    PRESSURE GAUGES
        BT: MEASURING DEVICES
        RT: DECOMPRESSION CHAMBERS
        RT: MANOMETERS
        RT: PRESSURE MEASUREMENT

    PRESSURE GRADIENTS
        RT: HYDROSTATICS
        RT: PRESSURE FIELD

    PRESSURE MEASUREMENT
        BT: MEASUREMENT
        RT: PRESSURE
        RT: PRESSURE GAUGES

    PRESSURE SENSORS
        NT: QUARTZ PRESSURE SENSORS
        RT: DEEP-SEA TIDE GAUGES
        RT: PRESSURE GAUGES
        RT: SENSORS

    PRESSURE VESSELS
        RT: HIGH PRESSURE EFFECTS
        RT: PRESSURE GAUGES

    PRESTRESSED CONCRETE
        BT: CONCRETE

    PREY SELECTION
        Notes: Added in 1982
        BT: PREDATION
        RT: COMPETITION
        RT: FEEDING BEHAVIOUR
        RT: PREDATOR CONTROL

    PRICING
        RT: AQUACULTURE ECONOMICS
        RT: CAPTURE FISHERY ECONOMICS
        RT: CATALOGUES

    PRIMARY PRODUCTION
        BT: BIOLOGICAL PRODUCTION
        RT: ALGAL BLOOMS
        RT: BIOGEOCHEMICAL CYCLE
        RT: CARBON 14

    PRIMERS
        BT: COATING MATERIALS
        RT: PAINTS

    PROBABILITY THEORY
        Notes: Used only as a qualifier
        RT: GAME THEORY
        RT: MATHEMATICAL MODELS
        RT: OPERATIONS RESEARCH

    PROCEDURES
        Notes: Used only as a qualifier
        RT: PLANNING
        RT: TESTS

    PROCESS PLANTS
        RT: CHEMICAL ENGINEERING
        RT: INDUSTRIAL PRODUCTION
        RT: INDUSTRIAL PRODUCTS

    PROCESSED FISHERY PRODUCTS
        Notes: Use of a more specific term is recommended. Before 1982 search FISHERY PRODUCTS
        BT: FISHERY PRODUCTS
        NT: CANNED PRODUCTS
        NT: CHILLED PRODUCTS
        NT: CURED PRODUCTS
        NT: DRIED PRODUCTS
        NT: FERMENTED PRODUCTS
        NT: FISH FILLETS
        NT: FISH GLUE
        NT: FISH OILS
        NT: FREEZE-DRIED PRODUCTS
        NT: FROZEN PRODUCTS
        NT: KRILL PRODUCTS
        NT: MINCED PRODUCTS
        NT: POWDERED PRODUCTS
        NT: ROES
        NT: SEAWEED PRODUCTS
        NT: STICKWATER
        RT: ACCEPTANCE TESTS
        RT: AQUACULTURE PRODUCTS
        RT: ARTISANAL FISHING

    PROCESSING FISHERY PRODUCTS
        Notes: Methods and techniques of processing commercial species, mainly fish and shellfish
        BT: FISHERY INDUSTRY
        NT: ANIMAL OIL EXTRACTION
        NT: CANNING
        NT: CURING
        NT: DRYING
        NT: FISH MEAL PROCESSING
        NT: REFRIGERATION
        RT: CODEX STANDARDS
        RT: COLD STORAGE
        RT: FILLETTING

    PRODUCT DEVELOPMENT
        Notes: Added in 1980
        RT: KRILL PRODUCTS
        RT: MARKETING
        RT: NEW PRODUCTS

    PRODUCTION COST
        RT: COST ANALYSIS
        RT: EXPLOITATION
        RT: FEASIBILITY

    PRODUCTION MANAGEMENT
        Notes: Added in 1980
        BT: MANAGEMENT
        RT: INDUSTRIAL PRODUCTION
        RT: INDUSTRIAL PRODUCTS
        RT: PRODUCTION COST

    PRODUCTION PLATFORMS
        BT: WORK PLATFORMS
        RT: DRILLING
        RT: DRILLING EQUIPMENT
        RT: DRILLING PLATFORMS

    PRODUCTS
        Notes: Added in 1980
        NT: AQUACULTURE PRODUCTS
        NT: BYPRODUCTS
        NT: FISHERY PRODUCTS
        NT: NEW PRODUCTS
        RT: INDUSTRIAL PRODUCTION
        RT: INDUSTRIES
        RT: MARKETING

    PROFILERS
        NT: BATHYTHERMOGRAPHS
        NT: CTD PROFILERS
        NT: CYCLESONDE
        NT: DROPSONDE
        NT: FREE-FALL PROFILERS
        NT: SHEAR PROBES
        NT: STD PROFILERS
        NT: VELOCITY PROFILERS
        RT: HORIZONTAL PROFILES
        RT: OCEANOGRAPHIC EQUIPMENT
        RT: PROFILES

    PROFILES
        NT: HORIZONTAL PROFILES
        NT: VERTICAL PROFILES
        RT: CONTOURS
        RT: GRADIENTS
        RT: GRAPHS

    PROFILING
        Notes: Use of a more specific term is recommended
        RT: PROFILES
        RT: SEISMIC REFLECTION PROFILING
        RT: SEISMIC REFRACTION PROFILING

    PROGRADATION
        RT: BEACH ACCRETION
        RT: COASTAL MORPHOLOGY
        RT: COASTS

    PROGRAMMES
        RT: COMPUTER PROGRAMS
        RT: CRUISES
        RT: MULTISHIP EXPEDITIONS

    PROGRESS REPORTS
        Notes: Used only as a qualifier
        BT: REPORT LITERATURE
        RT: ANNUAL REPORTS
        RT: RESEARCH INSTITUTIONS
        RT: RESEARCH PROGRAMMES

    PROGRESSIVE WAVES
        BT: OSCILLATORY WAVES

    PROLINE
        BT: AMINO ACIDS
        RT: PYRROLIDINE

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    PROMETHIUM
        BT: CHEMICAL ELEMENTS
        RT: PROMETHIUM COMPOUNDS
        RT: PROMETHIUM ISOTOPES
        RT: RARE EARTHS

    PROMETHIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: PROMETHIUM

    PROMETHIUM ISOTOPES
        BT: ISOTOPES
        RT: PROMETHIUM

    PROPANE
        BT: ACYCLIC HYDROCARBONS

    PROPELLERS
        RT: CAVITATION
        RT: PROPULSION SYSTEMS
        RT: THRUSTERS

    PROPERTIES
        Notes: Used only as a qualifier. Use of a more specific term is recommended
        NT: BIOLOGICAL PROPERTIES
        NT: CHEMICAL PROPERTIES
        NT: CONSERVATIVE PROPERTIES
        NT: ICE PROPERTIES
        NT: NON-CONSERVATIVE PROPERTIES
        NT: ORGANOLEPTIC PROPERTIES
        NT: PHYSICAL PROPERTIES
        NT: PHYSICOCHEMICAL PROPERTIES
        NT: SEDIMENT PROPERTIES
        NT: SURFACE PROPERTIES
        NT: WATER PROPERTIES
        RT: PARAMETERS

    PROPERTY RIGHTS
        Notes: Added in 1980
        BT: RIGHTS
        NT: RENTAL
        RT: AQUACULTURE
        RT: INLAND WATER ENVIRONMENT
        RT: LAKE RECLAMATION

    PROPHYLAXIS
        Notes: Added in 1980
        RT: DISEASE CONTROL
        RT: DISEASES
        RT: PARASITISM

    PROPULSION SYSTEMS
        Notes: Before 1982 search also PROPULSION ENGINES. For propulsion of aquatic organisms use LOCOMOTION
        NT: NUCLEAR PROPULSION
        NT: SAILS
        NT: THRUSTERS
        NT: UNDERWATER PROPULSION
        RT: BOATS
        RT: DIESEL ENGINES
        RT: FUEL ECONOMY

    PROTACTINIUM
        BT: CHEMICAL ELEMENTS
        RT: ACTINIDES
        RT: PROTACTINIUM COMPOUNDS
        RT: PROTACTINIUM ISOTOPES

    PROTACTINIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: PROTACTINIUM

    PROTACTINIUM ISOTOPES
        BT: ISOTOPES
        RT: PROTACTINIUM

    PROTANDRY
        RT: HERMAPHRODITISM
        RT: SELF FERTILIZATION

    PROTECTED RESOURCES
        Notes: Added in 1980
        BT: RESOURCES
        RT: LIVING RESOURCES
        RT: MARINE PARKS
        RT: NATURAL RESOURCES

    PROTECTION
        NT: ENVIRONMENTAL PROTECTION
        NT: FISHERY PROTECTION
        NT: SCOUR PROTECTION
        NT: SEABED PROTECTION
        RT: ACCIDENT PREVENTION
        RT: ALARM SYSTEMS
        RT: CORROSION CONTROL

    PROTECTION VESSELS
        BT: SHIPS
        RT: DEFENCE CRAFT
        RT: FISHERY PROTECTION
        RT: FISHERY REGULATIONS

    PROTECTIVE BEHAVIOUR
        Notes: Avoiding or hiding from predators
        BT: BEHAVIOUR
        RT: AUTOTOMY
        RT: BURROWING ORGANISMS
        RT: CAMOUFLAGE

    PROTECTIVE CLOTHING
        RT: DIVING EQUIPMENT
        RT: SAFETY DEVICES

    PROTEIN DEFICIENCY
        Notes: Added in 1980
        BT: NUTRITION DISORDERS
        RT: PROTEIN SYNTHESIS
        RT: PROTEINS

    PROTEIN DENATURATION
        Notes: Added in 1980
        BT: BIOCHEMICAL PHENOMENA
        RT: NUCLEIC ACIDS
        RT: PROTEIN SYNTHESIS
        RT: PROTEINS

    PROTEIN SYNTHESIS
        Notes: Added in 1980
        BT: BIOCHEMICAL PHENOMENA
        RT: AMINO ACIDS
        RT: PROTEIN DEFICIENCY
        RT: PROTEIN DENATURATION

    PROTEINS
        BT: ORGANIC COMPOUNDS
        NT: ACTIN
        NT: ALBUMINS
        NT: GLOBULINS
        NT: GLYCOPROTEINS
        NT: HISTONES
        NT: LIPOPROTEINS
        NT: LUCIFERIN
        NT: MUCINS
        NT: MYOGLOBINS
        NT: MYOSIN
        NT: PEPTIDES
        NT: PEPTONES
        NT: SINGLE CELL PROTEINS
        RT: AMINO ACIDS
        RT: BIOCHEMISTRY
        RT: CHEMICAL COMPOUNDS

    PROTISTS
        Notes: The primitive organisms from which animals and plants arose
        RT: EVOLUTION

    PROTOTYPES
        Notes: Used only as a qualifier
        RT: SPECIFICATIONS

    PROTOZOAN DISEASES
        BT: INFECTIOUS DISEASES
        RT: ANTIBIOTICS
        RT: ANTIPROTOZOAL AGENTS
        RT: BIOLOGICAL CONTROL

    PROVENANCE
        RT: PALAEOCURRENTS
        RT: SEDIMENTATION
        RT: SEDIMENTS

    PSAMMON
        Notes: The biota existing immediately below the upper layer of sand on beaches, existing in films of water in the interstices. Added in 1982
        BT: AQUATIC COMMUNITIES
        RT: EPIPSAMMON
        RT: SAND

    PSYCHROMETERS
        BT: HYGROMETERS
        RT: HYGROMETRY
        RT: METEOROLOGICAL INSTRUMENTS
        RT: THERMOMETERS

    PTEROPOD OOZE
        BT: CALCAREOUS OOZE
        RT: ARAGONITE
        RT: FOSSIL PTEROPODS

    PUBLIC ACCESS
        BT: ACCESS
        RT: COASTAL ZONE MANAGEMENT
        RT: RECREATION

    PUBLIC HEALTH
        BT: HEALTH AND SAFETY
        RT: AIR POLLUTION
        RT: EPIDEMICS
        RT: HUMAN DISEASES

    PUBLICITY MATERIAL
        BT: DOCUMENTS
        RT: BROCHURES
        RT: CONFERENCES
        RT: LECTURES

    PULP WASTES
        BT: WASTES
        RT: FOREST INDUSTRY

    PUMICE
        BT: VOLCANIC ROCKS
        RT: SURFACE DRIFTERS

    PUMP FISHING
        BT: CATCHING METHODS
        RT: ATTRACTING TECHNIQUES
        RT: AUTOMATED FISHING PLATFORMS
        RT: ELECTRIC FISHING

    PUMP STATIONS
        RT: PIPELINES
        RT: PUMPS

    PUMPING
        RT: PUMP FISHING
        RT: PUMPS
        RT: SLURRIES

    PUMPS
        Notes: Added in 1982
        NT: FISH PUMPS
        NT: WATER PUMPS
        RT: PIPELINES
        RT: PUMP FISHING
        RT: PUMP STATIONS

    PUPAE
        Notes: Added in 1980
        BT: INSECT LARVAE
        RT: JUVENILES

    PUPS
        NT: JUVENILES
        RT: MARINE MAMMALS

    PURCHASING
        RT: ACQUISITION
        RT: CONSUMERS
        RT: COSTS

    PURINES
        BT: ORGANIC COMPOUNDS

    PURSE SEINES
        BT: SURROUNDING NETS
        RT: PELAGIC FISHERIES
        RT: PURSE SEINING
        RT: SEINERS

    PURSE SEINING
        BT: SEINING
        RT: BAIT FISH
        RT: CLUPEOID FISHERIES
        RT: PURSE SEINES

    PYCNOCLINE
        BT: DISCONTINUITY LAYERS
        RT: DENSITY FRONTS
        RT: DENSITY GRADIENTS
        RT: DENSITY PROFILES

    PYLORIC CAECA
        BT: ALIMENTARY ORGANS
        RT: DIGESTION
        RT: DIGESTIVE GLANDS
        RT: FOOD ABSORPTION

    PYRANOMETERS
        BT: ACTINOMETERS
        RT: LIGHT MEASURING INSTRUMENTS
        RT: MEASURING DEVICES
        RT: METEOROLOGICAL INSTRUMENTS

    PYRGEOMETERS
        BT: ACTINOMETERS
        RT: TERRESTRIAL RADIATION

    PYRHELIOMETERS
        BT: ACTINOMETERS
        RT: METEOROLOGICAL INSTRUMENTS
        RT: SOLAR RADIATION

    PYRIDINES
        BT: AZINES

    PYRIMIDINES
        BT: AZINES

    PYRITE
        BT: SULPHIDE MINERALS

    PYROLUSITE
        BT: OXIDE MINERALS
        RT: MANGANESE MINERALS

    PYROLYSIS
        BT: DEGRADATION
        RT: BIOGEOCHEMISTRY
        RT: DISSOCIATION
        RT: TEMPERATURE EFFECTS

    PYROPHYLLITE
        BT: SILICATE MINERALS

    PYROXENES
        BT: SILICATE MINERALS
        NT: AUGITE
        RT: ALKALI BASALTS
        RT: THOLEIITE

    PYRRHOTITE
        BT: SULPHIDE MINERALS

    PYRROLIDINE
        BT: AMINES
        RT: PROLINE

    QUALITY
        Notes: Used only as a qualifier. Added in 1980
        RT: PRODUCT DEVELOPMENT
        RT: QUALITY ASSURANCE
        RT: QUALITY CONTROL

    QUALITY ASSURANCE
        Notes: Added in 1980
        RT: QUALITY
        RT: QUALITY CONTROL
        RT: STORAGE LIFE

    QUALITY CONTROL
        Notes: Methods and procedures for testing and monitoring quality at acceptable levels
        BT: CONTROL
        RT: ACCEPTABILITY
        RT: ACCEPTANCE TESTS
        RT: CERTIFICATION

    QUANTA METERS
        BT: LIGHT MEASURING INSTRUMENTS
        RT: IRRADIANCE METERS
        RT: PHOTOMETRY
        RT: PHOTOSYNTHESIS

    QUANTITATIVE DISTRIBUTION
        Notes: Used only as a qualifier
        BT: DISTRIBUTION
        RT: ABUNDANCE
        RT: BIOLOGICAL CHARTS
        RT: BIOMASS

    QUARANTINE REGULATIONS
        Notes: Regulations for protecting public health
        BT: NAVIGATION REGULATIONS
        RT: PUBLIC HEALTH

    QUARTER DIURNAL TIDES
        BT: TIDES
        RT: SHALLOW-WATER TIDES

    QUARTZ
        BT: SILICATE MINERALS
        RT: THOLEIITE

    QUARTZ CLOCKS
        BT: CHRONOMETERS

    QUARTZ PRESSURE SENSORS
        BT: PRESSURE SENSORS

    QUARTZ TEMPERATURE SENSORS
        BT: THERMOMETERS

    QUARTZITE
        BT: SILICATE MINERALS

    QUASI-GEOSTROPHIC MOTION
        BT: GEOSTROPHIC FLOW

    QUATERNARY
        Notes: Before 1982 search also QUATERNARY PERIOD
        BT: CENOZOIC
        NT: HOLOCENE
        NT: PLEISTOCENE
        RT: GEOMORPHOLOGY
        RT: PALYNOLOGY
        RT: SEA LEVEL

    QUICKSANDS
        BT: SAND
        RT: COHESIONLESS SEDIMENTS

    QUINOLINES
        BT: AZINES

    QUOTA REGULATIONS
        BT: FISHERY REGULATIONS
        RT: BLUE WHALE UNIT
        RT: CATCH STATISTICS
        RT: PERMITS

    RACEWAY CULTURE
        BT: AQUACULTURE TECHNIQUES
        RT: CRUSTACEAN CULTURE
        RT: CULTURES
        RT: FISH CULTURE

    RACIAL STUDIES
        RT: ELECTROPHORESIS
        RT: GENETICS
        RT: STOCK IDENTIFICATION

    RADAR
        BT: REMOTE SENSING EQUIPMENT
        NT: MICROWAVE RADAR
        RT: DETECTION
        RT: DOPPLER EFFECT
        RT: ELECTRONIC EQUIPMENT

    RADAR ALTIMETERS
        BT: MICROWAVE RADAR
        RT: ALTIMETERS
        RT: WAVE MEASURING EQUIPMENT

    RADAR ALTIMETRY
        BT: ALTIMETRY
        RT: AIRCRAFT
        RT: HELICOPTERS
        RT: RADAR

    RADAR CLUTTER
        NT: SURFACE CLUTTER
        RT: RADAR
        RT: RADAR IMAGERY

    RADAR IMAGERY
        BT: MICROWAVE IMAGERY
        RT: ELECTROMAGNETIC RADIATION
        RT: GEOSENSING
        RT: RADAR

    RADAR NAVIGATION
        BT: POSITION FIXING
        RT: COLLISION AVOIDANCE
        RT: RADAR
        RT: RADIO NAVIGATION

    RADIANCE
        Notes: Flux of radiant energy in water
        RT: EMISSIVITY
        RT: IRRADIANCE
        RT: LIGHT

    RADIANCE METERS
        BT: LIGHT MEASURING INSTRUMENTS
        RT: RADIANCE

    RADIATION BALANCE
        Notes: Net flux of solar and terrestrial radiation at water surface
        RT: HEAT BUDGET
        RT: HEAT EXCHANGE
        RT: SOLAR RADIATION

    RADIATION HAZARDS
        BT: HAZARDS
        RT: MEDICINE
        RT: RADIATION LEAKS
        RT: RADIATION PROTECTION

    RADIATION LEAKS
        BT: ACCIDENTS
        RT: RADIATION HAZARDS
        RT: RADIOACTIVE WASTE DISPOSAL

    RADIATION PROTECTION
        BT: HEALTH AND SAFETY
        RT: PUBLIC HEALTH
        RT: RADIATION HAZARDS
        RT: RADIOACTIVE CONTAMINATION

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    RADIATIONAL TIDES
        BT: TIDES
        RT: METEOROLOGICAL TIDES
        RT: SOLAR RADIATION
        RT: TIDAL CONSTITUENTS

    RADIATIONS
        Notes: Use of a more specific term is recommended
        NT: ELECTROMAGNETIC RADIATION
        NT: IONIZING RADIATION
        NT: THERMAL RADIATION

    RADIATIVE TRANSFER
        BT: ENERGY TRANSFER
        RT: ELECTROMAGNETIC RADIATION
        RT: HEAT TRANSFER
        RT: IRRADIANCE

    RADIO
        BT: COMMUNICATION SYSTEMS
        RT: MICROWAVES
        RT: RADIO AIDS
        RT: RADIO BUOYS

    RADIO AIDS
        Notes: Equipment used for position fixing in navigation
        RT: EQUIPMENT
        RT: FISHING OPERATIONS
        RT: NAVIGATION

    RADIO BUOYS
        BT: BUOYS
        RT: COMMUNICATION SYSTEMS
        RT: FISHING BUOYS
        RT: RADIO

    RADIO NAVIGATION
        BT: POSITION FIXING
        NT: DECCA
        NT: LORAN
        NT: OMEGA
        NT: SHORAN
        RT: FISHING OPERATIONS
        RT: LATTICE CHARTS
        RT: RADAR NAVIGATION

    RADIO OCEANOGRAPHY
        BT: OCEANOGRAPHY
        RT: RADAR
        RT: RADAR ALTIMETRY
        RT: RADAR IMAGERY

    RADIO TELEMETRY
        BT: TELEMETRY

    RADIO WAVES
        BT: ELECTROMAGNETIC RADIATION

    RADIOACTIVE AEROSOLS
        BT: AEROSOLS
        RT: ATMOSPHERIC CHEMISTRY
        RT: FALLOUT

    RADIOACTIVE CONTAMINATION
        BT: POLLUTION
        RT: BODY BURDEN
        RT: BRACKISHWATER POLLUTION
        RT: DUST

    RADIOACTIVE LABELLING
        Notes: Added in 1982
        RT: RADIOACTIVE TRACERS
        RT: RADIOACTIVITY

    RADIOACTIVE MATERIALS
        BT: MATERIALS
        NT: FISSION PRODUCTS
        RT: RADIOACTIVE WASTES
        RT: RADIOISOTOPES

    RADIOACTIVE POLLUTANTS
        BT: POLLUTANTS
        RT: CARCINOGENESIS
        RT: CARCINOGENS
        RT: FALLOUT

    RADIOACTIVE TRACERS
        BT: TRACERS
        RT: AUTORADIOGRAPHY
        RT: CARBON 13
        RT: CARBON 14

    RADIOACTIVE WASTE DISPOSAL
        BT: WASTE DISPOSAL
        RT: OCEAN DUMPING
        RT: PROTECTION
        RT: RADIATION LEAKS

    RADIOACTIVE WASTES
        Notes: Radioactive wastes in aquatic environment
        BT: WASTES
        RT: BIOACCUMULATION
        RT: FALLOUT
        RT: FISSION PRODUCTS

    RADIOACTIVITY
        RT: ACTINIUM
        RT: BODY BURDEN
        RT: FALLOUT

    RADIOCARBON DATING
        BT: RADIOMETRIC DATING
        RT: CARBON 13
        RT: CARBON 14

    RADIOCHEMISTRY
        BT: CHEMISTRY
        RT: IRRADIATION
        RT: NUCLEAR RADIATIONS
        RT: RADIOACTIVE CONTAMINATION

    RADIOECOLOGY
        Notes: Use of a more specific term is recommended
        BT: ECOLOGY
        RT: RADIOACTIVE CONTAMINATION
        RT: RADIOACTIVE TRACERS
        RT: RADIOACTIVE WASTES

    RADIOGRAPHY
        NT: AUTORADIOGRAPHY
        RT: FLUORESCENCE MICROSCOPY
        RT: IRRADIATION
        RT: PHOTOGRAPHY

    RADIOISOTOPES
        BT: ISOTOPES
        RT: BIOACCUMULATION
        RT: BIOLOGICAL HALF LIFE
        RT: CARBON 13

    RADIOLARIAN OOZE
        BT: SILICEOUS OOZE
        RT: FOSSIL RADIOLARIA
        RT: RADIOLARITE

    RADIOLARITE
        BT: SILICEOUS ROCKS
        RT: CLASTICS
        RT: PELAGIC SEDIMENTS
        RT: RADIOLARIAN OOZE

    RADIOMETERS
        BT: REMOTE SENSING EQUIPMENT
        NT: ACTINOMETERS
        NT: INFRARED DETECTORS
        NT: MICROWAVE RADIOMETERS
        RT: ELECTROMAGNETIC RADIATION
        RT: LIGHT MEASURING INSTRUMENTS
        RT: MEASURING DEVICES

    RADIOMETRIC DATING
        Notes: Before 1982 search RADIOACTIVE DATING
        BT: GEOCHRONOMETRY
        NT: OXYGEN ISOTOPE DATING
        NT: POTASSIUM-ARGON DATING
        NT: RADIOCARBON DATING
        NT: RUBIDIUM-STRONTIUM DATING
        NT: THORIUM-230/THORIUM-232 DATING
        NT: URANIUM-HELIUM DATING
        RT: ABSOLUTE AGE
        RT: CARBON 13
        RT: CARBON 14

    RADIONUCLIDE KINETICS
        Notes: For radionuclides in living organisms only. Added in 1980
        BT: KINETICS
        RT: BIOLOGICAL HALF LIFE
        RT: BODY BURDEN
        RT: EXCRETION

    RADIOSONDES
        RT: AIR TEMPERATURE
        RT: ATMOSPHERIC PRESSURE
        RT: BALLOONS

    RADIUM
        BT: CHEMICAL ELEMENTS
        RT: ALKALINE EARTH METALS
        RT: RADIOACTIVITY
        RT: RADIUM COMPOUNDS

    RADIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: RADIUM

    RADIUM ISOTOPES
        BT: ISOTOPES
        RT: RADIUM

    RADON
        BT: CHEMICAL ELEMENTS
        RT: RADON ISOTOPES
        RT: RARE GASES

    RADON ISOTOPES
        BT: ISOTOPES
        RT: RADON

    RADULAE
        Notes: Before 1982 search MOUTH PARTS
        BT: MOUTH PARTS
        RT: ALIMENTARY ORGANS
        RT: FRESHWATER MOLLUSCS
        RT: MARINE MOLLUSCS

    RAFT CULTURE
        Notes: Before 1982 search OFF-BOTTOM CULTURE
        BT: AQUACULTURE TECHNIQUES
        RT: AQUACULTURE EQUIPMENT
        RT: CAGE CULTURE
        RT: CULTURES

    RAFTING
        BT: SEDIMENT TRANSPORT
        NT: BIOLOGICAL RAFTING
        NT: ICE RAFTING
        RT: GLACIAL DEPOSITS
        RT: ICE DRIFT
        RT: PALAEOCEANOGRAPHY

    RAIN
        BT: WATER
        RT: ACID RAIN
        RT: ATMOSPHERIC PRECIPITATIONS
        RT: DROUGHTS

    RAIN GAUGES
        BT: METEOROLOGICAL INSTRUMENTS
        RT: RAIN
        RT: RAINFALL

    RAINFALL
        Notes: Amount of both rain and water equivalent of frozen precipitation
        RT: ACID RAIN
        RT: ATMOSPHERIC PRECIPITATIONS
        RT: CLIMATE

    RAINY SEASON
        BT: SEASONS
        RT: DRY SEASON
        RT: MONSOONS
        RT: RAIN

    RAISED BEACHES
        BT: BEACHES
        RT: COASTAL MORPHOLOGY
        RT: EMERGENT SHORELINES
        RT: EROSION FEATURES

    RANCHING
        Notes: Use of the natural aquatic environment as free feeding grounds for culturing organisms. Added in 1980
        RT: ANADROMOUS MIGRATIONS
        RT: COASTAL ZONE
        RT: FEEDING MIGRATIONS

    RANDOM PROCESSES
        RT: PROBABILITY THEORY
        RT: STATISTICAL ANALYSIS
        RT: STOCHASTIC PROCESSES

    RARE EARTHS
        BT: METALS
        RT: CERIUM
        RT: DYSPROSIUM
        RT: ERBIUM

    RARE GASES
        BT: GASES
        RT: ARGON
        RT: HELIUM
        RT: KRYPTON

    RARE RESOURCES
        Notes: Added in 1980
        BT: RESOURCES
        RT: LIVING RESOURCES
        RT: NATURAL RESOURCES
        RT: OVEREXPLOITATION

    RARE SPECIES
        Notes: Added in 1980
        BT: SPECIES
        RT: AQUATIC ANIMALS
        RT: AQUATIC PLANTS
        RT: FISHERY RESOURCES

    RATIOS
        Notes: Used only as a qualifier
        RT: ALBEDO
        RT: BOWEN RATIO
        RT: CARBON/NITROGEN RATIO

    RAW MATERIALS
        Notes: Added in 1980
        BT: MATERIALS
        RT: NATURAL RESOURCES
        RT: PRODUCTS

    RAY PATHS
        RT: SEISMIC PROPAGATION
        RT: SEISMIC WAVES
        RT: SOUND WAVES

    RAYLEIGH WAVES
        BT: SURFACE SEISMIC WAVES
        RT: STONELEY WAVES

    REARING
        RT: AQUACULTURE
        RT: AQUACULTURE TECHNIQUES
        RT: AQUARIA

    RECEPTORS
        Notes: Added in 1980
        BT: CELLS
        NT: TARGET CELLS
        RT: NEURONS
        RT: SENSE ORGANS

    RECIRCULATING SYSTEMS
        BT: AQUACULTURE SYSTEMS
        RT: AQUACULTURE EQUIPMENT
        RT: BIOFILTERS
        RT: CIRCULATION

    RECLAMATION
        Notes: Use of a more specific term is recommended. Added in 1980
        NT: LAKE RECLAMATION
        NT: LAND RECLAMATION
        NT: WATER RECLAMATION
        RT: BASELINE STUDIES
        RT: CONSERVATION
        RT: DEPLETION

    RECORDING EQUIPMENT
        BT: EQUIPMENT
        NT: DEPTH RECORDERS
        NT: SOUND RECORDERS
        NT: WAVE RECORDERS
        RT: DATA BUOYS
        RT: DATA LOGGERS
        RT: ELECTRONIC EQUIPMENT

    RECORDS
        Notes: Used only as a qualifier
        RT: ANALOG RECORDS
        RT: ARCHIVES
        RT: AUDIO RECORDINGS

    RECOVERY
        Notes: Recovery of materials and equipment including underwater vehicles
        NT: CORE RECOVERY
        NT: MOORING RECOVERY
        RT: CURRENT METER ARRAYS
        RT: DEPLOYMENT
        RT: DIVING

    RECREATION
        Notes: Added in 1980
        NT: BATHING
        NT: SPORT FISHING
        NT: SURFING
        NT: YACHTING
        RT: BAIT FISHING
        RT: BOATING
        RT: DANGEROUS ORGANISMS

    RECREATIONAL WATERS
        RT: BARRAGES
        RT: BEACHES
        RT: COASTAL ENGINEERING

    RECRUITMENT
        Notes: Including animal recruitment, length, weight and age at first capture, number of recruits
        BT: POPULATION FUNCTIONS
        RT: AGE AT RECRUITMENT
        RT: AGE COMPOSITION
        RT: FECUNDITY

    RED TIDES
        RT: ALGAL BLOOMS
        RT: BIOLOGICAL POISONS
        RT: DISCOLOURED WATER

    REDDS
        Notes: Spawning area of trout or salmon on the bottom of a lake or stream; usually a clear circular depression in gravel. Added in 1980
        RT: NESTS
        RT: SPAWNING GROUNDS

    REDFISH FISHERIES
        Notes: Added in 1982
        BT: FINFISH FISHERIES
        RT: DEMERSAL FISHERIES
        RT: MARINE FISHERIES

    REDMOUTH DISEASE
        Notes: Added in 1980
        BT: FISH DISEASES
        RT: BACTERIAL DISEASES
        RT: HATCHERIES
        RT: HUSBANDRY DISEASES

    REDOX POTENTIAL
        BT: CHEMICAL PROPERTIES
        RT: CHEMICAL REACTIONS
        RT: OXIDATION
        RT: OXIDOREDUCTASES

    REDOX REACTIONS
        BT: CHEMICAL REACTIONS
        RT: OXIDATION
        RT: OXIDOREDUCTASES
        RT: POLAROGRAPHY

    REDUCTION
        BT: CHEMICAL REACTIONS
        NT: SULPHATE REDUCTION
        RT: OXIDATION
        RT: REDOX POTENTIAL
        RT: REDOX REACTIONS

    REEF FISH
        Notes: Added in 1982
        BT: MARINE FISH
        RT: ARTIFICIAL REEFS
        RT: CORAL REEFS

    REEF FISHERIES
        Notes: Added in 1982
        BT: MARINE FISHERIES
        RT: ANGLING
        RT: ARTIFICIAL REEFS
        RT: CORAL REEFS

    REEF FORMATION
        RT: CORAL REEFS
        RT: REEFS
        RT: SEDIMENTATION

    REEFS
        NT: BIOHERMS
        NT: OYSTER REEFS
        RT: ARTIFICIAL REEFS
        RT: ATOLLS
        RT: CORAL REEFS

    REFERENCE LEVELS
        NT: DATUM LEVELS
        NT: LEVEL OF NO MOTION
        RT: DATA REDUCTION
        RT: SURFACES

    REFLECTANCE
        BT: OPTICAL PROPERTIES
        RT: AIR-WATER INTERFACE
        RT: ALBEDO
        RT: GLITTER

    REFLECTED GLOBAL RADIATION
        BT: SOLAR RADIATION
        RT: AIR-WATER INTERFACE
        RT: REFLECTANCE

    REFLECTION
        NT: LIGHT REFLECTION
        NT: SEISMIC REFLECTION
        NT: SOUND REFLECTION
        NT: WAVE REFLECTION
        RT: ABSORPTION (PHYSICS)
        RT: ALBEDO
        RT: REVERBERATION

    REFRACTION
        NT: LIGHT REFRACTION
        NT: SEISMIC REFRACTION
        NT: SOUND REFRACTION
        NT: WAVE REFRACTION
        RT: TRANSPARENCY
        RT: WAVE MOTION

    REFRACTIVE INDEX
        Notes: Before 1982 search REFRACTIVITY
        BT: OPTICAL PROPERTIES
        RT: ELECTRICAL CONDUCTIVITY
        RT: LIGHT DISPERSION
        RT: LIGHT REFRACTION

    REFRIGERATION
        Notes: Before 1982 search FREEZING
        BT: PROCESSING FISHERY PRODUCTS
        RT: ANTIFREEZES
        RT: CHILLED PRODUCTS
        RT: COLD STORAGE

    REFRIGERATORS
        Notes: Added in 1982
        BT: FISHERY INDUSTRY EQUIPMENT
        RT: COLD STORAGE
        RT: FISHERY INDUSTRY PLANTS
        RT: REFRIGERATION

    REFUGES
        Notes: Isolated localities, where organisms are free from natural or man-induced pressures. Added in 1980
        RT: GEOGRAPHICAL DISTRIBUTION
        RT: MARINE PARKS
        RT: NATURE CONSERVATION

    REGENERATION
        Notes: Regeneration processes of tissue, organs and appendices lost by injuries in natural or experimental conditions
        BT: BIOLOGICAL PHENOMENA
        RT: AUTOTOMY
        RT: BODY ORGANS
        RT: DEGENERATION

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    REGIONAL PLANNING
        Notes: Added in 1980
        BT: PLANNING
        RT: COASTAL ZONE MANAGEMENT
        RT: MANAGEMENT
        RT: NATIONAL PLANNING

    REGIONAL VARIATIONS
        BT: SPATIAL VARIATIONS
        RT: ANNUAL VARIATIONS
        RT: HORIZONTAL DISTRIBUTION
        RT: MIGRATIONS

    REGIONS
        RT: REGIONAL PLANNING

    REGRESSION ANALYSIS
        Notes: Used only as a qualifier
        BT: STATISTICAL ANALYSIS
        RT: CORRELATION ANALYSIS
        RT: LEAST SQUARES METHOD
        RT: SCATTER DIAGRAMS

    REGRESSIONS
        RT: COASTS
        RT: EMERGENT SHORELINES
        RT: EUSTATIC CHANGES

    REINFORCED CONCRETE
        BT: CONCRETE
        RT: STEEL

    RELATIVE DENSITY
        Notes: Use for specific gravity of sea water. Before 1984 search also SPECIFIC GRAVITY
        BT: WATER DENSITY
        RT: SEA WATER
        RT: SPECIFIC GRAVITY
        RT: WATER PROPERTIES

    RELATIVE HUMIDITY
        BT: HUMIDITY
        RT: HYGROMETERS
        RT: MIXING RATIO
        RT: SATURATION VAPOUR PRESSURE

    RELATIVE VORTICITY
        BT: VORTICITY
        RT: ABSOLUTE VORTICITY
        RT: VERTICAL SHEAR

    RELEASE MECHANISMS
        NT: MESSENGERS
        RT: OCEANOGRAPHIC EQUIPMENT

    RELIABILITY
        RT: ACCEPTABILITY
        RT: ACCURACY
        RT: CERTIFICATION

    RELICT LAKES
        BT: LAKES
        RT: FOSSIL SEA WATER

    RELICT SEDIMENTS
        BT: SEDIMENTS

    RELICT SHORELINES
        BT: COASTS

    RELICT SPECIES
        Notes: A species that is the remainder of a formerly more widely distributed species. Added in 1980
        BT: SPECIES
        RT: ECOLOGICAL DISTRIBUTION
        RT: GEOGRAPHICAL DISTRIBUTION
        RT: LIVING FOSSILS

    RELIEF FORMS
        RT: ABYSSAL HILLS
        RT: BANKS (TOPOGRAPHY)
        RT: CONTINENTAL RIDGES

    REMANENT MAGNETIZATION
        BT: MAGNETIC PROPERTIES
        RT: CORE ORIENTATION
        RT: GEOMAGNETIC FIELD
        RT: PALAEOMAGNETISM

    REMOTE CONTROL
        BT: CONTROL
        RT: ACOUSTIC COMMAND SYSTEMS
        RT: AUTOMATION
        RT: ELECTRONIC EQUIPMENT

    REMOTE SENSING
        Notes: Use only for publications concerned with the remote sensing of the environment from all locations, i.e. sea surface, space etc. For sensing from space use GEOSENSING
        NT: IMAGERY
        RT: AERIAL SURVEYS
        RT: AIRBORNE SENSING
        RT: AIRCRAFT

    REMOTE SENSING EQUIPMENT
        BT: EQUIPMENT
        NT: RADAR
        NT: RADIOMETERS
        NT: SONAR
        RT: CAMERAS
        RT: ELECTRONIC EQUIPMENT
        RT: LASER BATHYMETERS

    REMOVAL
        Notes: Used only as a qualifier
        RT: LIFTING
        RT: ORGAN REMOVAL
        RT: REPLACING

    RENEWABLE RESOURCES
        Notes: Added in 1980
        BT: NATURAL RESOURCES
        RT: DISSOLVED CHEMICALS
        RT: FISHERY RESOURCES
        RT: FOOD RESOURCES

    RENEWAL
        RT: FLUSHING TIME
        RT: OVERTURN
        RT: RESIDENCE TIME

    RENTAL
        Notes: Renting of land, water bodies or water resources for exploitation purposes. Added in 1980
        BT: PROPERTY RIGHTS
        RT: AQUACULTURE REGULATIONS
        RT: CONCESSIONS
        RT: COSTS

    REPAIR
        BT: MAINTENANCE
        RT: DAMAGE
        RT: DETERIORATION
        RT: LEAKS

    REPELLENTS
        Notes: Added in 1980
        NT: FISH REPELLENTS
        RT: INSECTICIDES
        RT: ORGANOLEPTIC PROPERTIES
        RT: PEST CONTROL

    REPLACING
        Notes: Used only as qualifier
        RT: FAILURES
        RT: REMOVAL
        RT: REPAIR

    REPORT LITERATURE
        Notes: Unpublished scientific and technical documents, in most cases describing the results of research and development projects. Use of a more specific term is recommended. Before 1982 search REPORTS
        BT: DOCUMENTS
        NT: ANNUAL REPORTS
        NT: CLASSIFIED DOCUMENTS
        NT: CRUISE REPORTS
        NT: DATA REPORTS
        NT: PROGRESS REPORTS
        RT: DATA COLLECTIONS
        RT: INTERNATIONAL COOPERATION
        RT: INTERNATIONAL ORGANIZATIONS

    REPRODUCTION
        Notes: Before 1982 search REPRODUCTION (BIOLOGY)
        NT: ALTERNATE REPRODUCTION
        NT: ANDROGENESIS
        NT: ASEXUAL REPRODUCTION
        NT: CELL DIVISION
        NT: PARTHENOGENESIS
        NT: SEXUAL REPRODUCTION
        NT: VEGETATIVE REPRODUCTION
        RT: ANIMAL PHYSIOLOGY
        RT: ANIMAL REPRODUCTIVE ORGANS
        RT: BIOGENESIS

    REPRODUCTIVE BEHAVIOUR
        BT: BEHAVIOUR
        NT: COURTSHIP
        RT: BREEDING
        RT: MIGRATIONS
        RT: NESTING

    REPRODUCTIVE CYCLE
        Notes: A period between hatching and the first spawning of a given generation. Added in 1982
        RT: BREEDING
        RT: LIFE CYCLE
        RT: REPRODUCTION

    REPTILE CULTURE
        Notes: Added in 1982
        BT: AQUACULTURE
        RT: AQUATIC REPTILES
        RT: SITE SELECTION

    RESEARCH
        Notes: Used only as a qualifier
        NT: EXPERIMENTAL RESEARCH
        RT: DESIGN
        RT: RESEARCH INSTITUTIONS
        RT: RESEARCH PROGRAMMES

    RESEARCH INSTITUTIONS
        BT: ORGANIZATIONS
        NT: BIOLOGICAL INSTITUTIONS
        NT: FISHERY INSTITUTIONS
        NT: GEOLOGICAL INSTITUTIONS
        NT: LIMNOLOGICAL INSTITUTIONS
        NT: OCEANOGRAPHIC INSTITUTIONS
        RT: ANNUAL REPORTS
        RT: BROCHURES
        RT: CRUISES

    RESEARCH PROGRAMMES
        NT: RESEARCH PROPOSALS
        RT: ANNUAL REPORTS
        RT: EDUCATION ESTABLISHMENTS
        RT: FELLOWSHIPS

    RESEARCH PROPOSALS
        Notes: Used only as a qualifier. Before 1982 search PROPOSED RESEARCH
        BT: RESEARCH PROGRAMMES
        RT: CRUISE PROGRAMMES
        RT: GRANTS
        RT: RESEARCH

    RESEARCH VESSELS
        Notes: Vessels used for oceanographic and limnological exploration
        BT: SURFACE CRAFT
        RT: ACCOMMODATION
        RT: BOATS
        RT: CATAMARANS

    RESERVOIR FISHERIES
        Notes: Added in 1980
        BT: INLAND FISHERIES
        RT: BAIT FISHING
        RT: LAKE FISHERIES
        RT: RESERVOIRS (WATER)

    RESERVOIRS (WATER)
        BT: INLAND WATERS
        RT: AQUACULTURE FACILITIES
        RT: ARTIFICIAL LAKES
        RT: BACKWATERS

    RESIDENCE TIME
        RT: AGE
        RT: AGE OF SEAWATER
        RT: CHEMICAL ELEMENTS

    RESIDUAL FLOW
        RT: FLUID MOTION
        RT: TIDAL CURRENTS
        RT: UNIDIRECTIONAL FLOW

    RESISTANCE MECHANISMS
        Notes: Added in 1980
        RT: BIOLOGICAL RESISTANCE
        RT: DEFENCE MECHANISMS
        RT: PATHOLOGY

    RESISTIVITY PROBES
        RT: ELECTRICAL RESISTIVITY
        RT: GEOPHYSICAL EQUIPMENT
        RT: SENSORS

    RESOLUTION
        Notes: Use only as a qualifier
        RT: ACCURACY
        RT: ERRORS
        RT: IMAGE ENHANCEMENT

    RESONANCE
        NT: HEAVE RESONANCE
        NT: PITCH RESONANCE
        NT: ROLL RESONANCE
        RT: OSCILLATIONS
        RT: RESONANT FREQUENCY
        RT: STANDING WAVES

    RESONANT FREQUENCY
        BT: FREQUENCY
        RT: DYNAMIC RESPONSE
        RT: RESONANCE
        RT: VIBRATION

    RESONANT WAVE INTERACTION
        BT: WAVE INTERACTIONS
        RT: INTERNAL WAVES
        RT: WAVE-WAVE INTERACTION

    RESOURCE AVAILABILITY
        BT: AVAILABILITY
        RT: ABUNDANCE
        RT: BASELINE STUDIES
        RT: CATCH/EFFORT

    RESOURCE CONSERVATION
        BT: CONSERVATION
        RT: ENVIRONMENT MANAGEMENT
        RT: ENVIRONMENTAL LEGISLATION
        RT: EXCLUSIVE ECONOMIC ZONE

    RESOURCE DEPLETION
        BT: DEPLETION
        RT: RESOURCE MANAGEMENT
        RT: RESOURCES

    RESOURCE DEVELOPMENT
        Notes: Economic development of living and non-living aquatic resources
        NT: AQUACULTURE DEVELOPMENT
        NT: FISHERY DEVELOPMENT
        RT: BIOLOGICAL DEVELOPMENT
        RT: DEVELOPING COUNTRIES
        RT: DEVELOPMENT POTENTIAL

    RESOURCE EXPLORATION
        BT: EXPLORATION
        NT: MINERAL EXPLORATION
        NT: OIL AND GAS EXPLORATION
        RT: RESOURCE SURVEYS
        RT: RESOURCES

    RESOURCE MANAGEMENT
        BT: MANAGEMENT
        NT: FISHERY MANAGEMENT
        NT: WATER MANAGEMENT
        RT: COST ANALYSIS
        RT: DEVELOPMENT POTENTIAL
        RT: ECONOMICS

    RESOURCE SURVEYS
        BT: SURVEYS
        RT: RESOURCE AVAILABILITY
        RT: RESOURCE EXPLORATION

    RESOURCES
        Notes: Before 1982 search NATURAL RESOURCES
        NT: FINANCIAL RESOURCES
        NT: HUMAN RESOURCES
        NT: INSTITUTIONAL RESOURCES
        NT: NATURAL RESOURCES
        NT: POTENTIAL RESOURCES
        NT: PROTECTED RESOURCES
        NT: RARE RESOURCES
        RT: AQUATIC SCIENCES
        RT: EXPLOITATION
        RT: OPERATIONS RESEARCH

    RESPIRATION
        NT: AEROBIC RESPIRATION
        NT: ANAEROBIC RESPIRATION
        RT: AIR
        RT: ANIMAL PHYSIOLOGY
        RT: BIOCHEMICAL OXYGEN DEMAND

    RESPIRATORY ORGANS
        Notes: Any respiratory organs of aquatic animals
        BT: ANIMAL ORGANS
        NT: GILLS
        NT: LARYNX
        NT: LUNGS
        NT: TRACHEA
        RT: AEROBIC RESPIRATION
        RT: ANATOMY
        RT: RESPIRATION

    RESPIRATORY PIGMENTS
        BT: PIGMENTS
        NT: HAEMOCYANINS
        NT: HAEMOGLOBINS
        RT: RESPIRATION
        RT: RESPIRATORY ORGANS

    RESPIRATORY SYSTEM
        RT: RESPIRATION
        RT: RESPIRATORY ORGANS

    RESPIROMETERS
        BT: MEASURING DEVICES
        RT: AEROBIC RESPIRATION
        RT: CARBON DIOXIDE
        RT: OXYGEN CONSUMPTION

    RESPONSE ANALYSIS
        RT: ORTHOTIDES
        RT: TIDAL ANALYSIS

    RESPONSE TIME
        RT: ATMOSPHERIC FORCING
        RT: OCEANIC RESPONSE
        RT: SALINITY

    RESTING EGGS
        Notes: Added in 1980
        BT: EGGS
        RT: DORMANCY
        RT: ENVIRONMENTAL EFFECTS
        RT: RESTING STAGES

    RESTING SPORES
        BT: SPORES
        RT: ASEXUAL REPRODUCTION
        RT: RESTING STAGES

    RESTING STAGES
        BT: DEVELOPMENTAL STAGES
        RT: ENVIRONMENTAL EFFECTS
        RT: RESTING EGGS
        RT: RESTING SPORES

    RESUSPENDED SEDIMENTS
        BT: SUSPENDED PARTICULATE MATTER
        RT: PARTICLE MOTION
        RT: RESUSPENSION
        RT: SEDIMENT TRAPS

    RESUSPENSION
        RT: RESUSPENDED SEDIMENTS
        RT: SUSPENDED LOAD

    RETINAS
        Notes: Added in 1980
        BT: EYES
        RT: VISION
        RT: VISUAL PIGMENTS
        RT: VISUAL STIMULI

    RETROGRADATION
        RT: COASTAL EROSION
        RT: COASTAL MORPHOLOGY
        RT: COASTS

    REVERBERATION
        BT: UNDERWATER NOISE
        NT: BOTTOM REVERBERATION
        RT: BACKSCATTER
        RT: REFLECTION
        RT: SOUND SCATTERING

    REVERSE OSMOSIS
        BT: OSMOSIS
        RT: DESALINATION
        RT: WASTEWATER TREATMENT

    REVERSING THERMOMETERS
        BT: THERMOMETERS
        RT: CORRECTIONS
        RT: IN SITU TEMPERATURE
        RT: MESSENGERS

    REYNOLDS NUMBER
        RT: DIMENSIONLESS NUMBERS
        RT: DRAG COEFFICIENT
        RT: FROUDE NUMBER

    REYNOLDS STRESSES
        BT: STRESS
        RT: BOTTOM STRESS
        RT: EDDY VISCOSITY
        RT: MOMENTUM TRANSFER

    RHENIUM
        BT: CHEMICAL ELEMENTS
        RT: METALS
        RT: RHENIUM COMPOUNDS
        RT: RHENIUM ISOTOPES

    RHENIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: RHENIUM

    RHENIUM ISOTOPES
        BT: ISOTOPES
        RT: RHENIUM

    RHEOLOGY
        BT: MECHANICS
        RT: DEFORMATION
        RT: NON-NEWTONIAN FLUIDS
        RT: PLASTIC FLOW

    ABCDEFGHIJKLMNOPQRSTUVWXYZ


    RHEOTAXIS
        BT: TAXIS
        RT: WATER CURRENTS

    RHEOTROPISM
        BT: TROPISM
        RT: WATER CURRENTS

    RHIZOMES
        Notes: Added in 1980
        BT: PLANT ORGANS
        RT: PLANT REPRODUCTIVE STRUCTURES
        RT: ROOTS
        RT: STEMS

    RHODAMINE B-DYE
        Notes: Synthetic red or pink substance used as tracer in study of water currents, turbulence
        BT: DYES
        RT: DYE DISPERSION
        RT: LAGRANGIAN CURRENT MEASUREMENT
        RT: TURBULENCE

    RHODIUM
        BT: CHEMICAL ELEMENTS
        RT: METALS
        RT: RHODIUM COMPOUNDS
        RT: RHODIUM ISOTOPES

    RHODIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: RHODIUM

    RHODIUM ISOTOPES
        BT: ISOTOPES
        RT: RHODIUM

    RHYOLITES
        BT: VOLCANIC ROCKS

    RIA COASTS
        BT: SUBMERGED SHORELINES
        RT: DROWNED VALLEYS
        RT: RETROGRADATION
        RT: TRANSGRESSIONS

    RIBOSE
        BT: MONOSACCHARIDES
        RT: ALDEHYDES
        RT: VITAMIN B

    RIBOSOMES
        Notes: Added in 1980
        RT: CYTOPLASM
        RT: PROTEIN SYNTHESIS
        RT: PROTEINS

    RICE FIELD AQUACULTURE
        Notes: Before 1982 search AGROPISCICULTURE
        BT: AGROPISCICULTURE
        RT: AGRICULTURE
        RT: AQUACULTURE TECHNIQUES
        RT: CRAYFISH CULTURE

    RICE FIELDS
        Notes: Added in 1982
        RT: FLOODING
        RT: RICE FIELD AQUACULTURE

    RICHARDSON NUMBER
        RT: INSTABILITY
        RT: SHEAR FLOW
        RT: VERTICAL SHEAR

    RICHTER SCALE
        RT: EARTHQUAKES
        RT: SEISMOLOGY

    RIDGES
        RT: CONTINENTAL RIDGES
        RT: MID-OCEAN RIDGES
        RT: RELIEF FORMS

    RIFT VALLEYS
        BT: LANDFORMS
        RT: FAULT ZONES
        RT: FAULTS
        RT: GRABEN

    RIFT ZONES
        Notes: Search also RIFTS
        NT: MEDIAN VALLEYS
        RT: DIVERGING PLATE BOUNDARIES
        RT: FAULT ZONES
        RT: FAULTS

    RIFTING
        RT: FAULT ZONES
        RT: MEDIAN VALLEYS
        RT: OROGENY

    RIGGING
        RT: DECK EQUIPMENT
        RT: SURFACE CRAFT

    RIGHTING
        BT: SHIP MOTION
        RT: CAPSIZING
        RT: LIFEBOATS
        RT: SHIP STABILITY

    RIGHTS
        Notes: Use of a more specific term is recommended. Added in 1980
        NT: EXCLUSIVE RIGHTS
        NT: EXPLORATION RIGHTS
        NT: FISHING RIGHTS
        NT: PROPERTY RIGHTS
        NT: WATER RIGHTS
        RT: LEGAL ASPECTS
        RT: LEGISLATION

    RIP CHANNELS
        BT: BEACH FEATURES
        RT: CHANNELS
        RT: EROSION
        RT: EROSION FEATURES

    RIP CURRENTS
        BT: NEARSHORE CURRENTS
        RT: BEACH CUSPS
        RT: COASTS
        RT: EDGE WAVES

    RIPARIAN RIGHTS
        Notes: Belonging to a person who owns land bordering a body of water. Added in 1980
        BT: WATER RIGHTS
        RT: FISHING RIGHTS
        RT: IRRIGATION WATER
        RT: LEGISLATION

    RIPPLE MARKS
        BT: BEDDING STRUCTURES
        RT: SAND RIPPLES
        RT: TRANSVERSE BED FORMS

    RIPRAP
        BT: BREAKWATERS

    RISER CABLES
        BT: CABLES
        RT: CABLE DYNAMICS
        RT: CATENARY
        RT: ELECTRICAL CABLES

    RISER PIPES
        BT: PIPES
        RT: FLOWLINES

    RISKS
        Notes: Includes risk analysis
        RT: ECONOMICS
        RT: FEASIBILITY
        RT: HAZARDS

    RIVER BANKS
        RT: BANKS (TOPOGRAPHY)
        RT: EMBANKMENTS
        RT: FLUVIAL MORPHOLOGY

    RIVER BASIN MANAGEMENT
        BT: MANAGEMENT
        RT: CONSERVATION
        RT: ENVIRONMENTAL LEGISLATION
        RT: FISHERY MANAGEMENT

    RIVER BASINS
        RT: BASINS
        RT: CATCHMENT AREA
        RT: FLUVIAL FEATURES

    RIVER BEDS
        RT: BED LOAD
        RT: BED ROUGHNESS
        RT: BOTTOM FRICTION

    RIVER DISCHARGE
        Notes: Flow from rivers into lakes and seas, contribution to water budget of seas and lakes, influence on environment and organisms
        BT: INFLOW
        RT: ATMOSPHERIC PRECIPITATIONS
        RT: BRACKISHWATER ENVIRONMENT
        RT: DELTAS

    RIVER ENGINEERING
        BT: ENGINEERING
        RT: COASTAL ENGINEERING
        RT: EMBANKMENTS
        RT: FLUVIAL MORPHOLOGY

    RIVER FISHERIES
        BT: INLAND FISHERIES
        RT: ARTISANAL FISHING
        RT: CRUSTACEAN FISHERIES
        RT: ESTUARINE FISHERIES

    RIVER MEANDERS
        Notes: Before 1986 use MEANDERS (RIVERS)
        BT: MEANDERING
        RT: FLOOD PLAINS
        RT: FLUVIAL FEATURES
        RT: FLUVIAL MORPHOLOGY

    RIVER OUTFLOW
        Notes: Outflow of water from lakes and other inland water bodies
        BT: OUTFLOW
        RT: HYDROLOGIC CYCLE
        RT: LAKES
        RT: RESERVOIRS (WATER)

    RIVER PLUMES
        Notes: Plumes mainly caused by suspended material from river discharge into lakes, estuaries or marine coastal areas
        BT: PLUMES
        RT: BUOYANT JETS
        RT: ESTUARINE FRONT
        RT: FLUVIAL FEATURES

    RIVER VALLEYS
        BT: VALLEYS
        RT: ALLUVIAL FANS
        RT: ALLUVIAL TERRACES
        RT: EROSION

    RIVER WATER
        BT: WATER
        RT: RIVERS

    RIVERS
        BT: INLAND WATERS
        NT: DISTRIBUTARIES
        NT: TRIBUTARIES
        RT: ALLUVIAL DEPOSITS
        RT: CHANNELS
        RT: DELTAS

    RNA
        Notes: Before 1982 search RIBONUCLEIC ACID
        BT: NUCLEIC ACIDS
        RT: CHEMICAL COMPOUNDS
        RT: POLYMERIZATION
        RT: RIBOSOMES

    ROBOTS
        BT: ELECTRONIC EQUIPMENT
        RT: AUTOMATION
        RT: COMPUTERS
        RT: MANIPULATORS

    ROCK DEFORMATION
        BT: DEFORMATION
        NT: DIAPIRISM
        RT: FAULTS
        RT: FOLDS
        RT: RHEOLOGY

    ROCK MECHANICS
        BT: MECHANICS
        RT: ELASTICITY
        RT: ROCK DEFORMATION
        RT: ROCKS

    ROCKS
        NT: IGNEOUS ROCKS
        NT: METAMORPHIC ROCKS
        NT: SEDIMENTARY ROCKS
        RT: BASEMENT ROCK
        RT: LITHOGENESIS
        RT: METAMORPHISM

    ROCKY SHORES
        BT: COASTAL LANDFORMS
        RT: COASTAL EROSION
        RT: COASTAL MORPHOLOGY
        RT: COASTS

    ROE FISHERIES
        Notes: Added in 1982
        BT: FISHERIES
        RT: ROES

    ROES
        Notes: Gonads of fish or invertebrates marketed in various ways and usually referred to by individual species, e.g. cod roe, salmon roe, etc. Added in 1980
        BT: PROCESSED FISHERY PRODUCTS
        NT: CAVIAR
        RT: HUMAN FOOD
        RT: ROE FISHERIES

    ROLL RESONANCE
        BT: RESONANCE
        RT: BUOY MOTION EFFECTS
        RT: ROLLING

    ROLL RESPONSE
        BT: DYNAMIC RESPONSE
        RT: BUOY MOTION EFFECTS
        RT: ROLLING

    ROLLERS
        BT: SWELL
        RT: BREAKERS
        RT: SHOALING WAVES

    ROLLING
        BT: SHIP MOTION
        RT: BUOY MOTION
        RT: BUOY MOTION EFFECTS
        RT: DYNAMIC RESPONSE

    ROOTS
        Notes: Added in 1980
        BT: PLANT ORGANS
        RT: NUTRIENTS (MINERAL)
        RT: RHIZOMES

    ROPES
        NT: FIBRE ROPE (NATURAL)
        NT: FIBRE ROPE (SYNTHETIC)
        NT: WIRE ROPE
        RT: CABLES
        RT: CHAIN
        RT: MOORING LINES

    ROSSBY NUMBER
        RT: CORIOLIS FORCE
        RT: DIMENSIONLESS NUMBERS
        RT: INERTIA

    ROSSBY PARAMETER
        RT: BAROCLINIC INSTABILITY
        RT: BETA-PLANE
        RT: CORIOLIS PARAMETERS

    ROTARY CURRENTS
        BT: TIDAL CURRENTS
        RT: CORIOLIS FORCE
        RT: CURRENT ELLIPSES

    ROTATING FLUIDS
        BT: FLUIDS
        RT: FLUID MOTION
        RT: SPINDOWN
        RT: SPINUP

    ROTATION
        NT: EARTH ROTATION
        RT: ANTICYCLONIC MOTION
        RT: CYCLONIC MOTION
        RT: MOTION

    ROTENONE
        RT: FISH POISONING
        RT: TOXICANTS

    ROUGHNESS
        Notes: Use of a more specific term is recommended
        BT: SURFACE PROPERTIES
        NT: BED ROUGHNESS
        NT: SURFACE ROUGHNESS
        RT: FRICTION

    ROW BOATS
        Notes: Before 1982 search BOATS
        BT: SURFACE CRAFT
        RT: ARTISANAL FISHING
        RT: RECREATION

    RUBBER
        Notes: Rubber as a material used in the aquatic environment. For rubber cements or adhesives use ADHESIVES
        BT: MATERIALS

    RUBBLEMOUND BREAKWATERS
        BT: BREAKWATERS

    RUBIDIUM
        BT: CHEMICAL ELEMENTS
        RT: ALKALI METALS
        RT: RUBIDIUM COMPOUNDS
        RT: RUBIDIUM ISOTOPES

    RUBIDIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: RUBIDIUM

    RUBIDIUM ISOTOPES
        BT: ISOTOPES
        RT: RUBIDIUM
        RT: RUBIDIUM-STRONTIUM DATING

    RUBIDIUM-STRONTIUM DATING
        BT: RADIOMETRIC DATING
        RT: RUBIDIUM ISOTOPES
        RT: STRONTIUM ISOTOPES

    RUDITES
        RT: BOULDER CLAY
        RT: BOULDERS
        RT: BRECCIA

    RUNNELS
        BT: BEACH FEATURES
        RT: BEACHES
        RT: CHANNELS

    RUNOFF
        Notes: Water derived from atmospheric precipitation which reaches streams and rivers. The term must not be confused in this thesaurus with RIVER DISCHARGE
        BT: DRAINAGE WATER
        NT: AGRICULTURAL RUNOFF
        NT: STORMWATER RUNOFF
        NT: URBAN RUNOFF
        RT: CATCHMENT AREA
        RT: FLOOD CONTROL
        RT: FLOODS

    RUTHENIUM
        BT: CHEMICAL ELEMENTS
        RT: METALS
        RT: RUTHENIUM COMPOUNDS
        RT: RUTHENIUM ISOTOPES

    RUTHENIUM COMPOUNDS
        RT: CHEMICAL COMPOUNDS
        RT: RUTHENIUM

    RUTHENIUM ISOTOPES
        BT: ISOTOPES
        BT: CHEMICAL ELEMENTS
        RT: RUTHENIUM
        RT: CHEMICAL COMPOUNDS

    RUTILE
        BT: OXIDE MINERALS
        RT: HEAVY MINERALS
        RT: PLACERS
        RT: TITANIUM

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