Niche conservatism above the species level.

  title={Niche conservatism above the species level.},
  author={Elizabeth A. Hadly and Paula Ann Spaeth and Cheng Li},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={106 Suppl 2},
Traits that enable species to persist in ecological environments are often maintained over time, a phenomenon known as niche conservatism. Here we argue that ecological niches function at levels above species, notably at the level of genus for mammals, and that niche conservatism is also evident above the species level. Using the proxy of geographic range size, we explore changes in the realized niche of North American mammalian genera and families across the major climatic transition… CONTINUE READING
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