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Tracking Data for Common Eiders (Somateria mollissima) Tracking Data for Common Eiders (Somateria mollissima)
This data release includes 2 child items with tracking data for Common Eiders, a sea duck species found across Alaska and the Arctic. Some populations migrate between distant breeding and wintering areas while others are essentially nonmigratory. Child Item 1: "Argos Satellite Tracking Data for Common Eiders (Somateria mollissima) - Processed Data" -- Quality-controlled data collected...
Survey of viral hemorrhagic septicemia virus in Pacific herring throughout the North Pacific Ocean Survey of viral hemorrhagic septicemia virus in Pacific herring throughout the North Pacific Ocean
Throughout a 20-year biosurveillance period, viral hemorrhagic septicemia virus was isolated in low titers from only 6 / 7,355 opportunistically sampled adult Pacific herring, reflecting the typical endemic phase of the disease when the virus persists covertly. However, more focused surveillance efforts identified the presence of disease hot spots occurring among juvenile life history...
Data release for Evidence of humans in North America during the Last Glacial Maximum Data release for Evidence of humans in North America during the Last Glacial Maximum
Archaeologists and researchers in allied fields have long sought to understand human colonization of North America. Questions remain about when and how people migrated, where they originated, and how their arrival affected the established fauna and landscape. Here, we present evidence from excavated surfaces in White Sands National Park (New Mexico, United States), where multiple in situ...
Topographic, temperature, and sediment grain size data used to evaluate potential habitat for anadromous salmonids on the upper Merced and Tuolumne Rivers in California Topographic, temperature, and sediment grain size data used to evaluate potential habitat for anadromous salmonids on the upper Merced and Tuolumne Rivers in California
This data release includes various data sets used to quantify the capacity of two rivers, the Merced and Tuolumne, in the Sierra Nevada of California for reintroduction of two species of anadromous salmonids, Steelhead and spring-run Chinook Salmon. The child pages linked below provide access to the following data sets: Topo-bathymetric digital elevation models of the river channels and...
Model Archive Summary for Surrogate Regression of Fine-Sediment Particles for Lake Tahoe Tributaries Model Archive Summary for Surrogate Regression of Fine-Sediment Particles for Lake Tahoe Tributaries
This USGS data release presents Model Archive Summaries (MAS) and tabular calibration data used to develop surrogate regressions to estimate fine sediment particles flowing into Lake Tahoe. Fine sediment particles in the size range of 0.5 to 16.0 micrometers (μm) represent the primary size range of suspended sediment responsible for clarity reduction in Lake Tahoe. Models will be used to...
Mercury and Methylmercury Concentrations in Litterfall Samples Collected at Selected National Atmospheric Deposition Program Sites during 2017 to 2019 Mercury and Methylmercury Concentrations in Litterfall Samples Collected at Selected National Atmospheric Deposition Program Sites during 2017 to 2019
The movement of mercury (Hg) from the atmosphere to the biosphere occurs by both wet and dry deposition to solid surfaces, water, and vegetation. Most of the annual dry atmospheric Hg deposition in deciduous forests is believed to originate from litterfall which consists mainly of dead leaves that fall to the earth’s surface, primarily during the autumn and winter seasons. Atmospheric Hg...