USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2780 items)
Contamination and pollution
(29 items)
Culture and demographics
(3 items)
Earth characteristics
(3854 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
(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)
(114 items)
Organisms
(157 items)
Population and community ecology
(769 items)
Water properties
(137 items)
Water quality
(105 items)
