USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2838 items)
Contamination and pollution
(29 items)
Culture and demographics
(3 items)
Earth characteristics
(3857 items)
Effects of climate change
(235 items)
Elements
(48 items)
Field monitoring stations
(97 items)
Hazards
(402 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
(104 items)
Organism groupings (non-taxonomic)
(114 items)
Organisms
(158 items)
Population and community ecology
(777 items)
Water properties
(141 items)
Water quality
(106 items)
