USGS Thesaurus
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Themes, subjects, and concerns for which USGS information resources are relevant.
Subtopics:
Biological and physical processes
(1823 items)
Contamination and pollution
(24 items)
Culture and demographics
(1 items)
Earth characteristics
(3126 items)
Effects of climate change
(145 items)
Elements
(29 items)
Field monitoring stations
(87 items)
Hazards
(292 items)
Health and disease
(12 items)
Human impacts
(12 items)
Information system design and development
(76 items)
Land use and land cover
(48 items)
Map coordinate systems
(3 items)
Natural resource extraction
(1 items)
Natural resources
(61 items)
Organism groupings (non-taxonomic)
(56 items)
Organisms
(123 items)
Population and community ecology
(344 items)
Water properties
(93 items)
Water quality
(79 items)
