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Comment
. 2015 May;84(3):647-651.
doi: 10.1111/1365-2656.12338. Epub 2015 Mar 3.

Trophic cascades from wolves to grizzly bears or changing abundance of bears and alternate foods?

Shannon M Barber-Meyer  1
Affiliations
Comment

Trophic cascades from wolves to grizzly bears or changing abundance of bears and alternate foods?

Shannon M Barber-Meyer. J Anim Ecol. 2015 May.

Abstract

This is a Forum article commenting on: Ripple, W. J., Beschta, R. L., Fortin, J. K., & Robbins, C. T. (2014) Trophic cascades from wolves to grizzly bears in Yellowstone. Journal of Animal Ecology, 83, 223-233. Comparisons Ripple et al. (2014) used to demonstrate increased fruit availability and consumption by grizzly bears post-wolf reintroduction are flawed and tenuous at best. Importantly, a more parsimonious (than trophic cascades) hypothesis, not sufficiently considered by Ripple et al., exists and is better supported by available data I review.

Keywords: Canis lupus; Ursus arctos; Yellowstone; grizzly bear; scat; serviceberry; study design; trophic cascades; wolf.

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