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Alphabetical index of categories: O

a b c d e f g h i j k l m n O p q r s t u v w x y z

Number of information resources is shown in parentheses after each term.

oblasts -> political areas (1) field observation -> field inventory and monitoring (382) indicator species observation -> ecosystem monitoring (62) weather observations (50) -> field inventory and monitoring -> atmospheric and climatic processes observation sites -> research areas (3) geophysical observatories -> science centers (51) observatories -> research facilities (4) radio observatories -> research facilities (4) volcano observatories -> science centers (51) observatorios -> research facilities (4) earthquake occurrence maps (14) -> earthquake occurrences -> maps and atlases earthquake occurrences (42) ocean-atmosphere interaction (7) ocean bottom characteristics -> sea-floor characteristics (37) ocean characteristics (66) ocean chemistry -> marine chemistry (5) ocean circulation (2) ocean current measurement (2) -> field inventory and monitoring -> ocean currents ocean currents (1) ocean currents (7) ocean floor features -> seafloor features (15) oceanic lithosphere (4) ocean monitoring (31) -> field inventory and monitoring -> ocean characteristics biological oceanography -> marine biology (21) chemical oceanography -> marine chemistry (5) geological oceanography -> marine geology (52) oceanography -> ocean sciences (51) physical oceanography -> ocean sciences (51) ocean processes (43) ocean regions (6) oceans (13) -> ocean characteristics -> ocean processes oceans (11) ocean salinity (2) ocean sciences (51) ocean temperature (12) ocean tides -> tides (oceanic) (5) ocean water quality -> marine water quality (14) ocean wave measurement (3) -> field inventory and monitoring -> ocean waves ocean waves (20) distribution of animals -> biogeography (73) effects of climate change (34) off-stream water use -> offstream water use (16) field offices (8) offices -> buildings (13) regional offices (1) science discipline offices (3) support offices (2) official communications (19) offshore areas -> coastal zones (77) offstream water use (16) distribution of plants -> biogeography (73) lists of publications -> catalogs and indexes (96) improvement of scientific data usability (1) distribution of species -> biogeography (73) collection of specimens -> specimen collecting (21) bodies of water -> hydrographic features (298) sounds (bodies of water) -> channels (4) OGC WCS -> web map services (5) OGC WFS -> web map services (5) OGC WMS -> web map services (5) oilfields -> oil fields (1) oil fields (1) olive oil mills -> industrial sites (3) oil palm plantations -> agricultural sites (6) enhanced oil recovery (4) tertiary oil recovery -> enhanced oil recovery (4) oil refineries -> industrial sites (3) oil resources (90) oil shale resources (7) oil spills (11) -> industrial pollution -> petroleum oil wells -> wells (29) olive groves -> woods (1) olive oil mills -> industrial sites (3) maps on demand -> sales and distribution services (12) ontogeny -> organism growth and development (8) ontology development -> knowledge organization system development (2) open pit mines -> mine sites (15) employment and volunteer opportunities (13) optical backscatterance sensing -> optical methods (3) optically-stimulated luminescence dating -> luminescence dating (3) optical methods (3) optical microscopy (2) optical reflectance measurement -> optical methods (3) oral presentations -> speeches and testimony (1) orchards -> agricultural sites (6) countries, 2nd order divisions (1) ore deposits (metallic) -> metallic mineral resources (25) ore formation (1) metallic ores -> metallic mineral resources (25) ore treatment plants -> industrial sites (3) dissolved organic compounds (9) organic decomposition -> biogeochemical cycling (14) organism groupings (non-taxonomic) (204) organism growth and development (8) biological organisms -> organisms (302) genetically engineered organisms (1) genetically modified organisms -> genetically engineered organisms (1) organisms (302) organizational structure (64) knowledge organization system development (2) orienteering -> geolocation measurement (39) ornithology (32) orthoimagery (14) -> image collections -> aerial photography orthophotographs (14) -> image collections -> aerial photography Ostracoda -> ostracodes (1) ostracodes (1) ostracods -> ostracodes (1) outer core (earth) (1) outfall -> contamination and pollution (182) over-fishing -> overfishing (3) over-grazing -> overgrazing (1) overfalls -> hydrographic features (298) overfishing (3) overgrazing (1) overpasses -> bridges (2) intermittent oxbow lakes -> lakes (36) oxbow lakes -> lakes (36) dissolved oxygen -> oxygen content (water) (13) oxygen content (water) (13) oxygen isotope analysis (6) ozone layer (1) ozonesphere -> ozone layer (1)

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