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Game fishes of the United States Game fishes of the United States
Game fish, sport fish, or regulated fish species are popular among recreational anglers. These species are managed by states, jurisdictions, or territories to limit their harvest and maintain healthy fish stocks. Game fish have significant economic importance and represent an essential component of fish communities. This game fish classification serves as the first public designation of...
Data for decadal shifts in groundwater age detected by environmental tracers across California, USA Data for decadal shifts in groundwater age detected by environmental tracers across California, USA
This data release documents seven tables containing environmental tracer data and lumped parameter model results used to evaluate temporal changes in groundwater age at 268 sites across California from 2004 to 2021. These sites are spatially distributed throughout the state and represent groundwater at depths used for public supply. Each site was sampled at least twice, with paired...
Katahdin Woods and Waters National Monument TFG Unit Vegetation Mapping Project Katahdin Woods and Waters National Monument TFG Unit Vegetation Mapping Project
The Katahdin Woods and Waters (KAWW) National Monument TFG Unit Vegetation Mapping Project was initiated in the fall of 2022 by a grant through the USGS Natural Resource Preservation Program (NRPP) to classify and map vegetation types of the TFG Unit, thereby providing resource managers and biological researchers with useful baseline vegetation information. These data provide the...
USGS Archive of Computed tomography (CT) Scans of Coral Cores USGS Archive of Computed tomography (CT) Scans of Coral Cores
This data release presents computed tomography (CT) imagery generated from coral core samples curated within the U.S. Geological Survey (USGS) Coral-Core Archive. These data were collected as part of ongoing USGS coral-reef research activities and include samples originating from multiple locations and collection efforts. A Geotek Rotating X-ray CT (RXCT) system was used to acquire x-ray...
Ponderosa Pine Regeneration and Plant Community Composition in High Severity Reburn Patches of Arizona's Colorado Plateau Ponderosa Pine Regeneration and Plant Community Composition in High Severity Reburn Patches of Arizona's Colorado Plateau
The area burned in high severity fire as well as the proportion of fires burning at high severity have been increasing in southwestern ponderosa pine (Pinus ponderosa) forests since the 1980s, with over 100,000 hectares burning in many recent years and many fires burning at over 40% moderate to high severity. These fires often contain large patches (>100 ha) of 100% tree mortality. This...
Major, Minor, and Trace Element Results from Sequential Extractions of Sediment Cores Collected from the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, Minnesota, 2014 to 2019 Major, Minor, and Trace Element Results from Sequential Extractions of Sediment Cores Collected from the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, Minnesota, 2014 to 2019
This U.S. Geological Survey (USGS) Data Release contains chemical analysis information on sediment core and oil samples collected at the National Crude Oil Spill Fate and Natural Attenuation Research Site near Bemidji, Minnesota, USA. Following a crude-oil spill in 1979, biodegradation of petroleum hydrocarbons in the contaminated aquifer has formed distinct zones of pH and/or redox...