USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2800 items)
Contamination and pollution
(29 items)
Culture and demographics
(3 items)
Earth characteristics
(3856 items)
Effects of climate change
(236 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
(65 items)
Map coordinate systems
(3 items)
Natural resource exploration
(2 items)
Natural resource extraction
(3 items)
Natural resources
(101 items)
Organism groupings (non-taxonomic)
(114 items)
Organisms
(157 items)
Population and community ecology
(777 items)
Water properties
(138 items)
Water quality
(106 items)
