USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(1911 items)
Contamination and pollution
(29 items)
Culture and demographics
(1 items)
Earth characteristics
(3339 items)
Effects of climate change
(145 items)
Elements
(37 items)
Field monitoring stations
(100 items)
Hazards
(453 items)
Health and disease
(12 items)
Human impacts
(11 items)
Information system design and development
(627 items)
Land use and land cover
(47 items)
Map coordinate systems
(3 items)
Natural resource extraction
(1 items)
Natural resources
(199 items)
Organism groupings (non-taxonomic)
(104 items)
Organisms
(141 items)
Population and community ecology
(397 items)
Water properties
(203 items)
Water quality
(78 items)
