USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2851 items)
Contamination and pollution
(29 items)
Culture and demographics
(3 items)
Earth characteristics
(3883 items)
Effects of climate change
(235 items)
Elements
(51 items)
Field monitoring stations
(97 items)
Hazards
(405 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
(112 items)
Organism groupings (non-taxonomic)
(124 items)
Organisms
(160 items)
Population and community ecology
(788 items)
Water properties
(145 items)
Water quality
(106 items)
