Scale-dependence in polychlorinated biphenyl (PCB) exposure effects on waterbird habitat occupancy

  title={Scale-dependence in polychlorinated biphenyl (PCB) exposure effects on waterbird habitat occupancy},
  author={James P. Gibbs and Shahrokh Rouhani and Leyla Shams},
Spatial scale is rarely considered in population-level assessments of contaminant impacts on wild animals; as a result misinterpretation of the relationship between contaminant exposure and population status may occur. We assessed the strength of expression of polychlorinated biphenyl (PCB) exposure effects at local vs. regional spatial scales on population status in five species of waterbirds, “bioaccumulators” often promoted as indicators of contaminant effects in aquatic ecosystems. Our… 
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