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Calculated Carbon Concentrations, Franklin Lock and Dam (S-79), south Florida, 2014-2017 Calculated Carbon Concentrations, Franklin Lock and Dam (S-79), south Florida, 2014-2017
This data release provides data for dissolved organic carbon concentrations calculated for USGS station number 02292900, Caloosahatchee River at S-79, NR. Olga, FLA. A site-specific regression model was developed using continuously measured specific conductance and fluorescence of chromophoric dissolved organic matter and concomitant discretely collected dissolved organic carbon samples...
Sea-Floor Sediment and Imagery Data Collected in Nantucket Sound, Massachusetts, 2016 and 2017 Sea-Floor Sediment and Imagery Data Collected in Nantucket Sound, Massachusetts, 2016 and 2017
Two marine geological surveys were conducted in Nantucket Sound, Massachusetts, in May 2016 and May 2017 by the U.S. Geological Survey as part of an agreement with the Massachusetts Office of Coastal Zone Management to map the geology of the sea floor offshore of Massachusetts. Samples of surficial sediment and photographs of the sea floor were collected at 76 sampling sites within the...
Microbial Carbon and Nitrogen Metabolism Across a Late Pleistocene Permafrost Chronosequence Microbial Carbon and Nitrogen Metabolism Across a Late Pleistocene Permafrost Chronosequence
This data release includes all of the data presented in the peer-reviewed publication "Life at the frozen limit: Microbial Carbon Metabolism Across a Late Pleistocene Permafrost Chronosequence". We collected permafrost from a Pleistocene chronosequence (19 ka to 33 ka) to examine (1) changes in the functional genetic potential of extant microbial communities to metabolize polysaccharides...
Terrestrial Development Index for the Western United States: 1-kilometer moving window Terrestrial Development Index for the Western United States: 1-kilometer moving window
The Terrestrial Development Index (TDI) quantifies the level of development (urban, agriculture, energy and mineral extraction and transmission, and transportation) based on the surface disturbance footprint. TDI values range from 0 to 100% and represent the total percentage of land surface occupied by the development footprint within a 1-kilometer (km) radius moving window.
Surface water sites associated with the hydrologic assessment of the Blackfeet Reservation, Montana Surface water sites associated with the hydrologic assessment of the Blackfeet Reservation, Montana
Surface water sites associated with the hydrologic assessment of the Blackfeet Reservation in Montana.
Avian diet and vegetation data for Hakalau Forest, Hawaii, 2012-2016 Avian diet and vegetation data for Hakalau Forest, Hawaii, 2012-2016
This data release includes data and metadata on 1) avian diet 2) seed rain 3) understory plant composition 4) seedling abundance and 5) sampling locations for these sites. In addition it includes data on seedling abundance, grass cover and light levels for a grass removal/seed addition experiment . All sites were within Hakalau Forest National Wildlife Refuge on Hawaii Island. This study...