Encroaching forests decouple alpine butterfly population dynamics.

@article{Roland2007EncroachingFD,
  title={Encroaching forests decouple alpine butterfly population dynamics.},
  author={Jens Roland and Stephen F. Matter},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2007},
  volume={104 34},
  pages={13702-4}
}
Over the past 50 years, the rising tree line along Jumpingpound Ridge in the Rocky Mountains of Alberta, Canada, has reduced the area of alpine meadows and isolated populations that reside within them. By analyzing an 11-year data set of butterfly population sizes for 17 subpopulations along the ridge, we show that forest habitat separating alpine meadows decouples the dynamics of populations of the alpine butterfly Parnassius smintheus. Although the distance between populations is often… CONTINUE READING
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