USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(2730 items)
Contamination and pollution
(29 items)
Culture and demographics
(3 items)
Earth characteristics
(3819 items)
Effects of climate change
(218 items)
Elements
(48 items)
Field monitoring stations
(97 items)
Hazards
(359 items)
Health and disease
(12 items)
Human impacts
(14 items)
Information system design and development
(124 items)
Land use and land cover
(61 items)
Map coordinate systems
(3 items)
Natural resource exploration
(2 items)
Natural resource extraction
(3 items)
Natural resources
(98 items)
Organism groupings (non-taxonomic)
(106 items)
Organisms
(156 items)
Population and community ecology
(758 items)
Water properties
(136 items)
Water quality
(103 items)
