USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2465 items)
Contamination and pollution
(29 items)
Culture and demographics
(2 items)
Earth characteristics
(3682 items)
Effects of climate change
(201 items)
Elements
(46 items)
Field monitoring stations
(92 items)
Hazards
(346 items)
Health and disease
(12 items)
Human impacts
(12 items)
Information system design and development
(124 items)
Land use and land cover
(56 items)
Map coordinate systems
(3 items)
Natural resource exploration
(2 items)
Natural resource extraction
(1 items)
Natural resources
(94 items)
Organism groupings (non-taxonomic)
(97 items)
Organisms
(151 items)
Population and community ecology
(586 items)
Water properties
(128 items)
Water quality
(98 items)
