Daily calling activity for Pseudacris crucifer at site SC4DAI2 in the St. Croix National Scenic Riverway from 2008 to 2012, as indicated by the results of integrating daily median dB values across 2900 to 3200 Hz and 2100 to 2300 h

To describe calling activity of Pseudacris crucifer in relation to temperature, precipitation, and wetland water levels, we programmed an acoustic recorder (Wildlife Acoustics) to sample seasonal amphibian calls remotely at study site SC4DAI2 in the St. Croix National Scenic Riverway from 2008 to 2012. We programmed the recorder to sample for five minutes at the top of every hour of every day from late winter/early spring through late summer. We used the Songscape option in Songscope software to generate annual summaries of all of our acoustic samples from SC4DAI2. These summaries included a median dB level for each prescribed frequency within each recording. Pseudacris crucifer, the spring peeper, inhabited SC4DAI2...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Pseudacris crucifer, St. Croix National Scenic Riverway, Wisconsin, USA, USGS Science Data Catalog (SDC), air temperature, amphibian calling activity, All tags... precipitation (atmospheric), temperature, wetland surface-water availability, Fewer tags

Patterns of mercury and selenium exposure in Minnesota common loons: Data

The concentrations of selected metals (mercury [Hg], lead, cadmium, selenium [Se], and aluminum) were determined in common loon (Gavia immer) blood samples collected from across a broad area of Minnesota. The observed pattern of loon Hg exposure was related to Hg concentrations in a standardized 12-cm whole organism yellow perch (Perca flavescens), based on fish Hg records from lakes throughout Minnesota, using the U.S. Geological Survey National Descriptive Model for Mercury in Fish.

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Aitkin County, Minnesota, USA, Anoka County, Minnesota, USA, Becker County, Minnesota, USA, Beltrami County, Minnesota, USA, Benton County, Minnesota, USA, All tags... Big Stone County, Minnesota, USA, Blue Earth County, Minnesota, USA, Brown County, Minnesota, USA, Carlton County, Minnesota, USA, Carver County, Minnesota, USA, Cass County, Minnesota, USA, Chippewa County, Minnesota, USA, Chisago County, Minnesota, USA, Clay County, Minnesota, USA, Clearwater County, Minnesota, USA, Cook County, Minnesota, USA, Cottonwood County, Minnesota, USA, Crow Wing County, Minnesota, USA, Dakota County, Minnesota, USA, Douglas County, Minnesota, USA, Faribault County, Minnesota, USA, Fillmore County, Minnesota, USA, Freeborn County, Minnesota, USA, Goodhue County, Minnesota, USA, Grant County, Minnesota, USA, Hennepin County, Minnesota, USA, Houston County, Minnesota, USA, Hubbard County, Minnesota, USA, Isanti County, Minnesota, USA, Itasca County, Minnesota, USA, Jackson County, Minnesota, USA, Kanabec County, Minnesota, USA, Kandiyohi County, Minnesota, USA, Kittson County, Minnesota, USA, Koochiching County, Minnesota, USA, Lac Qui Parle County, Minnesota, USA, Lake County, Minnesota, USA, Lake of the Woods County, Minnesota, USA, Le Sueur County, Minnesota, USA, Lincoln County, Minnesota, USA, Lyon County, Minnesota, USA, Mahnomen County, Minnesota, USA, Marshall County, Minnesota, USA, Martin County, Minnesota, USA, Mcleod County, Minnesota, USA, Meeker County, Minnesota, USA, Mille Lacs County, Minnesota, USA, Minnesota, Morrison County, Minnesota, USA, Mower County, Minnesota, USA, Murray County, Minnesota, USA, Nicollet County, Minnesota, USA, Nobles County, Minnesota, USA, Norman County, Minnesota, USA, Olmsted County, Minnesota, USA, Otter Tail County, Minnesota, USA, Pennington County, Minnesota, USA, Pine County, Minnesota, USA, Pipestone County, Minnesota, USA, Polk County, Minnesota, USA, Pope County, Minnesota, USA, Ramsey County, Minnesota, USA, Red Lake County, Minnesota, USA, Redwood County, Minnesota, USA, Renville County, Minnesota, USA, Rice County, Minnesota, USA, Rock County, Minnesota, USA, Roseau County, Minnesota, USA, Scott County, Minnesota, USA, Sherburne County, Minnesota, USA, Sibley County, Minnesota, USA, St Louis County, Minnesota, USA, Stearns County, Minnesota, USA, Steele County, Minnesota, USA, Stevens County, Minnesota, USA, Swift County, Minnesota, USA, Todd County, Minnesota, USA, Traverse County, Minnesota, USA, USGS Science Data Catalog (SDC), Wabasha County, Minnesota, USA, Wadena County, Minnesota, USA, Waseca County, Minnesota, USA, Washington County, Minnesota, USA, Watonwan County, Minnesota, USA, Wilkin County, Minnesota, USA, Winona County, Minnesota, USA, Wright County, Minnesota, USA, Yellow Medicine County, Minnesota, USA, biota, birds, common loon, contamination and pollution, fish contaminants, mathematical modeling, mercury, selenium, Fewer tags

Timing of first and last calls and median calling peaks for Pseudacris crucifer, and of the first call for Hyla chrysoscelis/versicolor, at six wetlands in the St. Croix National Scenic Riverway from 2008-2012

To better understand relations of annual calling phenophases for Pseudacris crucifer, and of the first calls of the season for Hyla chrysoscelis/versicolor, to the timing of the start of the calling season, we compared these dynamics for six wetlands in the St. Croix National Scenic Riverway from 2008 to 2012. We installed an acoustic recorder at each site prior to the start of each calling season and programmed it to record for five minutes at the top of every hour until late summer. We then used the Songscape option in Songscope software to generate annual summaries of all acoustic files recorded at each site. We created contour plots of the summarized median dB values across bandwidths in each recording and then...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Amphibian calling phenology, H. chrysoscelis/versicolor, P. crucifer, St. Croix National Scenic Riverway, Minnesota, USA, USGS Science Data Catalog (SDC), All tags... phenophases, Fewer tags

Seasonal median daily water depths for study wetlands in the Tamarac National Wildlife Refuge, the St. Croix National Scenic Riverway, the North Temperate Lakes Long-term Research area, and the Upper Mississippi River study area from 2008-2012

To relate water levels in our study wetlands to temperature, precipitation, wetland water depth, and amphibian calling activity, we installed one pressure logger in the deepest spot we could find in each wetland. Soon after thawing conditions allowed, we drove a plastic pipe (anchor pipe) into the sediments at the deepest location and secured another pipe to it that contained one pressure logger (Global Water Model 14 and 15 [College Station, TX, USA] or Onset Computer Corporation Model U20-001-04 [Bourne, MA, USA]) suspended approximately 2.5 cm above the sediments. We installed additional individual pressure loggers in the upper part of the logger pipes (in air) at select locations to measure barometric pressure...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: North Temperate Lakes Long-term Research area, Wisconsin, USA, St. Croix National Scenic Riverway, Minnesota, USA, St. Croix National Scenic Riverway, Wisconsin, USA, Tamarac National Wildlife Refuge, Minnesota, USA, USGS Science Data Catalog (SDC), All tags... Upper Mississippi River, Wisconsin, USA, air temperature, amphibian calling activity, field inventory and monitoring, hydroperiod, precipitation (atmospheric), surface-water availability, temperature, water temperature, Fewer tags

The eight-day interval during which amphibians first called annually at individual study wetlands across four study areas

To help determine when winter conditions were changing to spring conditions annually in our four study areas, we determined the first eight-day interval (in accordance with the scale limitations of satellite data we used to assess the presence of snow) during which the first amphibian of the season called at each of our study wetlands in those areas. To do this, we examined contour plots of summaries of all the acoustic data we collected at that site in a given year to identify the unique call signatures of individual amphibian species by date and time. When necessary due to potential confounding on a contour plot, we also examined relevant individual five-minute recordings aurally and visually to confirm whether...

Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: North Temperate Lakes Long-term Research Area, Wisconsin, USA, St. Croix National Scenic Riverway, Minnesota, USA, St. Croix National Scenic Riverway, Wisconsin, USA, Tamarac National Wildlife Refuge, Minnesota, USA, USGS Science Data Catalog (SDC), All tags... Upper Mississippi River, Wisconsin, USA, air temperature, amphibian calling phenology, snowmelt, temperature, Fewer tags