USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2637 items)
Contamination and pollution
(29 items)
Culture and demographics
(2 items)
Earth characteristics
(3696 items)
Effects of climate change
(200 items)
Elements
(46 items)
Field monitoring stations
(92 items)
Hazards
(348 items)
Health and disease
(12 items)
Human impacts
(12 items)
Information system design and development
(124 items)
Land use and land cover
(57 items)
Map coordinate systems
(3 items)
Natural resource exploration
(2 items)
Natural resource extraction
(1 items)
Natural resources
(96 items)
Organism groupings (non-taxonomic)
(98 items)
Organisms
(154 items)
Population and community ecology
(740 items)
Water properties
(128 items)
Water quality
(99 items)
