Filters: partyWithName: U.S. Geological Survey - ScienceBase (X) > Types: OGC WMS Layer (X) > partyWithName: Paul Dummer (X) > Types: OGC WMS Service (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (2) OGC WFS Layer (2) Contacts Christine M Custer Upper Midwest Environmental Sciences Center Thomas W Custer Ecosystems Sandra Schultz More... Categories Data (2) Tag Types Theme (2) Place (2) Harvest Set (2) Tag Schemes None (2) Common geographic areas (1) ISO 19115 Topic Category (1) USGS Thesaurus (1) View Results as: JSON ATOM CSV

Perfluoroalkyl contaminant exposure in tree swallows nesting at Clarks Marsh, Oscoda, MI Dataset A site in north eastern MI, Oscoda Township, has some of the highest recorded exposure in birds to perfluorinated substances (PFASs) in the U.S. Some egg and plasma concentrations at that location exceeded the lowest reproductive effect threshold established for two avian laboratory species. The objectives of this study were to determine whether there were reproductive effects or physiological responses in a model bird species, the tree swallow (Tachycineta bicolor), associated with this extremely high exposure to PFASs. The lack of exposure above background to other contaminants at this site allowed for an assessment of PFAS effects without the complication that responses may be caused by other contaminants. A... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Clarks Marsh, Oscoda, Michigan, USA, Oscoda, Michigan, USA, PFOS, Perfluorinated chemicals, USGS Science Data Catalog (SDC), All tags... Wurtsmith Airforce Base, Oscoda, Michigan, USA, biota, physiological responses, reproductive effects, tree swallows, Fewer tags Reproductive success and contaminant associations in tree swallows (Tachnycineta bicolor) nesting in the U.S. and Binational Great Lakes' Areas of Concern data During 2010-2014, tree swallow (Tachycineta bicolor) reproductive success was monitored at 68 sites across all 5 Great Lakes, including 58 sites located within Great Lakes Areas of concern (AOCs) and 10 non-AOCs. Sample eggs were collected from tree swallow clutches and analyzed for contaminants including polychlorinated biphenyls (PCBs), dioxin and furans, polybrominated diphenyl ethers, and 34 other organic compounds. Contaminant data were available for 360 of the 1249 clutches monitored. Markov chain multistate modeling was used to assess the importance of 5 ecological and 11 of the dominant contaminants in explaining the pattern of egg and nestling failure rates. Four of 5 ecological variables (female Age, Date... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Areas of Concern, Great Lakes, PBDEs, PCBs, PCDD-F, All tags... Tachycineta bicolor, Tree swallows, USGS Science Data Catalog (SDC), egg failure probability, eggs, hatching success, industrial pollution, nestling failure probability, organic pesticides, reproductive success, Fewer tags