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Folders: ROOT > ScienceBase Catalog > Upper Midwest Environmental Sciences Center (UMESC) > Upper Midwest Environmental Sciences Center Data > Laurentian Great Lakes > GLRI: Birds as Indicators of Contaminant Exposure in the Great Lakes ( Show all descendants )

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_____GLRI: Birds as Indicators of Contaminant Exposure in the Great Lakes
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Tree swallows, Tachycineta bicolor, were sampled across the Great Lakes basin in 2010-2015 to provide a system-wide assessment of current exposure to organic contaminants. These results provide information identified as critical by land managers and regulators to assess the ‘Bird or Animal Deformity or Reproductive Problems’ Beneficial Use Impairment. Eggs were collected from 69 sites across all five Great Lakes, including 27 Areas of Concern (AOCs), some with multiple sites, and ten sites not listed as an AOC. Concentrations of organic contaminants in eggs were quantified and compared to background and reproductive effect thresholds. Approximately one-third of the AOCs had geometric mean concentrations of total...
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Tree swallow, Tachycineta bicolor, nestlings were collected from 60 sites in the Great Lakes which included multiple sites at 27 Areas of Concern (AOCs) and 6 sites not listed as AOCs from 2010 to 2014. Nestlings were measured for ethoxyresorufin-O-dealkylase (EROD) activity, chromosomal damage (DNA CV), and six measures of oxidative stress. Each of these bioindicators was divided into four groups from the highest to lowest values and the groups were compared to contaminant concentrations using multivariate analysis. Nestling contaminant concentrations included polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), perfluorinated compounds (PFCs), and 17 elements. Alkylated polycyclic aromatic...
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Contaminant exposure of tree swallows, Tachycineta bicolor, nesting in the Great Lakes basin was assessed in 2010 to 2014. Tree swallow nestlings were collected from 69 sites which included multiple sites at some of the 27 Areas of Concern (AOCs) and at nine non-AOC sites. Polycyclic aromatic hydrocarbon (PAHs), polychlorinated biphenyl (PCBs), and polybrominated diphenyl ether (PBDEs) concentrations were measured in nestling stomach contents. Concentrations of PCBs and PBDEs were measured in nestling carcasses. Perfluorinated compounds (PFCs) were measured in nestling plasma. Pooled dietary concentrations of total PAHs were highest at the Rouge River, MI AOC (1,856 ng/g wet weight) and lowest at White Lake, MI...
    map background search result map search result map Birds as indicators of contaminants in the Great Lakes - Egg Contaminants Data Birds as indicators of contaminants in the Great Lakes EROD activity, chromosomal damage, and oxidative stress in response to contaminant exposure to tree swallows (Tachycineta bicolor) nesting in the Great Lakes Areas of Concern: Data Birds as indicators of contaminants in the Great Lakes - Egg Contaminants Data Birds as indicators of contaminants in the Great Lakes EROD activity, chromosomal damage, and oxidative stress in response to contaminant exposure to tree swallows (Tachycineta bicolor) nesting in the Great Lakes Areas of Concern: Data