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dc.contributor.authorWilkening, Jennifer L.
dc.contributor.authorCole, Evan J.
dc.contributor.authorBeever, Erik A.
dc.date.accessioned2019-10-07T19:52:25Z
dc.date.available2019-10-07T19:52:25Z
dc.date.issued2019-06
dc.identifier.citationWilkening, Jennifer L., Evan J. Cole, and Erik A. Beever. "Evaluating mechanisms of plant-mediated effects on herbivore persistence and occupancy across an ecoregion." Ecosphere 10, no. 6 (June 2019). DOI:10.1002/ecs2.2764.en_US
dc.identifier.issn2150-8925
dc.identifier.urihttps://scholarworks.montana.edu/xmlui/handle/1/15714
dc.description.abstractContemporary climate change is rapidly creating one of the greatest challenges for management and conservation during the 21st century. Mountain ecosystems, which have a high degree of spatial heterogeneity and contain numerous habitat specialists, have been identified as particularly vulnerable. We used data from multiple years across sites spanning a >40 million ha ecoregion to test hypotheses regarding how community‐level characteristics of vegetation may affect a mammalian generalist herbivore, the American pika (Ochotona princeps). We examined patterns of pika persistence across sites in the hydrographic Great Basin, and occupancy within a subset of these sites. We used mixed‐effects logistic regression models to compare evidence in support of competing explanations for each pattern within an information–theoretic framework (using Akaike's information criterion). Models reflected four hypothesized classes of mechanisms related to nutritional ecology, ecosystem function, indirect indication of climatic effects, and (synergistic) combinations of these three classes. At the site level, models reflecting synergistic effects received the most support. At the within‐site level, support appeared to be split equally among hypotheses containing predictors related to either nutritional ecology or indirect climate effects. Well‐supported predictors included cover of invasive plant species, cover of more‐xeric plant species, species evenness, and proportion of graminoid species. Our results both (1) identify important aspects of vegetation communities that may influence herbivore distribution in mountainous areas across a large, diverse geographic region, and (2) contribute to an improved understanding of how mountain ecosystems may be affected by ongoing climate change, more broadly.en_US
dc.rightsCC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/legalcodeen_US
dc.titleEvaluating mechanisms of plant-mediated effects on herbivore persistence and occupancy across an ecoregionen_US
dc.typeArticleen_US
mus.citation.extentfirstpagee02764en_US
mus.citation.issue6en_US
mus.citation.journaltitleEcosphereen_US
mus.citation.volume10en_US
mus.identifier.doi10.1002/ecs2.2764en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentEcology.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.data.thumbpage5en_US
mus.contributor.orcidBeever, Erik A.|0000-0002-9369-486Xen_US


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CC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.
Except where otherwise noted, this item's license is described as CC BY: This license lets you distribute, remix, tweak, and build upon this work, even commercially, as long as you credit the original creator for this work. This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.

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