Population status of freshwater turtles across a PCB contamination gradient

  title={Population status of freshwater turtles across a PCB contamination gradient},
  author={James P. Gibbs and Shahrokh Rouhani and Leyla Shams},
  journal={Aquatic Biology},
Remarkably few studies on the effects of PCBs on wild turtles have been conducted. We contrasted population-level parameters of 2 species of freshwater turtles, the snapping turtle Chelydra serpentina and the painted turtle Chrysemys picta, across a strong PCB concentration gradient in the upper Hudson River, New York State, USA. Our study employed standardized capture methods that yielded 465 turtles during 1968 trap-nights over 2 yr (2006 and 2007) at 246 trapping sites. Individuals of both… 

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