Bird species richness within beaver ponds in south-central New York

@article{Grover2009BirdSR,
  title={Bird species richness within beaver ponds in south-central New York},
  author={Anita M. Grover and Guy A. Baldassarre},
  journal={Wetlands},
  year={2009},
  volume={15},
  pages={108-118}
}
We surveyed 70 wetlands during winter and spring 1992 to determine the influence of beaver activity on species richness of birds. Wetlands were divided into 3 activity types (active, inactive, potential), and 3 size categories of small (<2.5 ha), medium (≥2.5 <5.0 ha), and large (≥5.0 ha). We recorded 32 species of birds during winter, 20–25 within each activity/size category. There were no differences (P>0.050) among size classes in the average number of species/wetland, but the average was… 

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