Saturday, December 5, 2015

New publication: Yellowstone wolf (Canis lupus) denisty predicted by elk (Cervus elaphus) biomass


    thumbnail




    Yellowstone wolf (Canis lupus) denisty predicted by elk (Cervus elaphus) biomass

    Canadian Journal of Zoology

    Orig title was Yellowstone Wolf Regulation
    By:
    and
    DOI: 10.1139/cjz-2015-0002

    Links

    Abstract

    The Northern Range (NR) of Yellowstone National Park (YNP) hosts a higher prey biomass density in the form of elk (Cervus elaphus L., 1758) than any other system of gray wolves (Canis lupus L., 1758) and prey reported. Therefore, it is important to determine whether that wolf–prey system fits a long-standing model relating wolf density to prey biomass. Using data from 2005 to 2012 after elk population fluctuations dampened 10 years subsequent to wolf reintroduction, we found that NR prey biomass predicted wolf density. This finding and the trajectory of the regression extend the validity of the model to prey densities 19% higher than previous data and suggest that the model would apply to wolf–prey systems of even higher prey biomass.

    Study Area