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Wolves trigger a trophic cascade to berries as alternative food for grizzly bears
Author(s) -
Ripple William J.,
Beschta Robert L.,
Fortin Jennifer K.,
Robbins Charles T.
Publication year - 2015
Publication title -
journal of animal ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.134
H-Index - 157
eISSN - 1365-2656
pISSN - 0021-8790
DOI - 10.1111/1365-2656.12339
Subject(s) - grizzly bears , trophic cascade , trophic level , ecology , national park , abundance (ecology) , geography , berry , biology , food web , population , demography , sociology , ursus , botany
This is a Forum article in response to: Barber‐Meyer, S. (2015) Trophic cascades from wolves to grizzly bears or changing abundance of bears and alternate foods? Journal of Animal Ecology , 83, doi: 10.1111/1365‐2656.12338 . We used multiple data sets and study areas as well as several lines of evidence to investigate potential trophic linkages in Yellowstone National Park. Our results suggest that a trophic cascade from wolves to elk to berry production to berry consumption by grizzly bears may now be underway in the Park.