USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2757 items)
Contamination and pollution
(29 items)
Culture and demographics
(3 items)
Earth characteristics
(3830 items)
Effects of climate change
(224 items)
Elements
(48 items)
Field monitoring stations
(97 items)
Hazards
(374 items)
Health and disease
(12 items)
Human impacts
(14 items)
Information system design and development
(124 items)
Land use and land cover
(63 items)
Map coordinate systems
(3 items)
Natural resource exploration
(2 items)
Natural resource extraction
(3 items)
Natural resources
(99 items)
Organism groupings (non-taxonomic)
(106 items)
Organisms
(157 items)
Population and community ecology
(761 items)
Water properties
(137 items)
Water quality
(105 items)
