Habitat-mediated variation in predation risk by the American marten

Ecology
Mark AndruskiwJames A Baker

Abstract

The probability of prey encounter, attack, capture, and kill are often hypothesized to depend on habitat structure, but field evidence in terrestrial systems is rare. We tested whether predation efficiency by the American marten (Martes americana) and fear of predation by their primary prey, the red-backed vole (Clethrionomys gapperi), differed between 20- to 50-year-old regenerating forest stands and older uncut stands. Our results showed that the frequency of prey encounter, prey attack, and prey kill were higher in old uncut forests, despite the fact that small-mammal density was similar to that in younger logged forests. These differences in predation efficiency were linked to higher abundance of coarse woody debris, which seems to offer sensory cues to martens, thereby increasing the odds of hunting success. Red-backed voles in regenerating forest stands exhibited increased wariness compared to voles living in old uncut forest, suggestive of a behavioral response to habitat-mediated variation in predation risk.

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Citations

Jan 7, 2010·Oecologia·Shane Wallace Geange, Adrian C Stier
Jul 16, 2011·Oecologia·Nathalie PettorelliJean-Michel Gaillard
Jul 3, 2009·Proceedings. Biological Sciences·Cheryl A JohnsonJames A Baker
Sep 15, 2012·Proceedings. Biological Sciences·Nicholas J DeCesare
Apr 29, 2015·Molecular Ecology Resources·Erin L KoenPaul J Wilson
Jul 22, 2011·Ecological Applications : a Publication of the Ecological Society of America·Jonah L KeimSubhash R Lele
Aug 27, 2014·Ecological Applications : a Publication of the Ecological Society of America·Cristina AponteLauren T Bennett
Sep 25, 2014·Ecology Letters·Anne M Trainor, Oswald J Schmitz
Feb 15, 2020·Animals : an Open Access Journal From MDPI·Sasha J TetzlaffJinelle H Sperry
Nov 2, 2019·Scientific Reports·Mark I McCormickMaria M Palacios
Oct 26, 2020·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Leigha M LynchHaley D O'Brien
Jul 20, 2021·Ecological Applications : a Publication of the Ecological Society of America·Matthew M SmithJonathan N Pauli

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