PoplarV1, Main, Exploration, bibRecord, 002940

Predation risk, elk, and aspen: tests of a behaviorally mediated trophic cascade in the Greater Yellowstone Ecosystem.

Identifieur interne : 002940 ( Main/Exploration ); précédent : 002939; suivant : 002941

Predation risk, elk, and aspen: tests of a behaviorally mediated trophic cascade in the Greater Yellowstone Ecosystem.

Auteurs : John A. Winnie [États-Unis]

Source :

Ecology [ 0012-9658 ] ; 2012.

RBID : pubmed:23431591

Descripteurs français

KwdFr :
- Adaptation biologique (MeSH), Animaux (MeSH), Cervidae (physiologie), Chaine alimentaire (MeSH), Comportement prédateur (MeSH), Conservation des ressources naturelles (MeSH), Facteurs de risque (MeSH), Facteurs temps (MeSH), Loups (physiologie), Modèles statistiques (MeSH), Populus (physiologie), Simulation numérique (MeSH).
MESH :
- physiologie : Cervidae, Loups, Populus.
- Adaptation biologique, Animaux, Chaine alimentaire, Comportement prédateur, Conservation des ressources naturelles, Facteurs de risque, Facteurs temps, Modèles statistiques, Simulation numérique.

English descriptors

KwdEn :
- Adaptation, Biological (MeSH), Animals (MeSH), Computer Simulation (MeSH), Conservation of Natural Resources (MeSH), Deer (physiology), Food Chain (MeSH), Models, Statistical (MeSH), Populus (physiology), Predatory Behavior (MeSH), Risk Factors (MeSH), Time Factors (MeSH), Wolves (physiology).
MESH :
- physiology : Deer, Populus, Wolves.
- Adaptation, Biological, Animals, Computer Simulation, Conservation of Natural Resources, Food Chain, Models, Statistical, Predatory Behavior, Risk Factors, Time Factors.

Abstract

Aspen in the Greater Yellowstone Ecosystem are hypothesized to be recovering from decades of heavy browsing by elk due to a behaviorally mediated trophic cascade (BMTC). Several authors have suggested that wolves interact with certain terrain features, creating places of high predation risk at fine spatial scales, and that elk avoid these places, which creates refugia for plants. This hypothesized BMTC could release aspen from elk browsing pressure, leading to a patchy recovery in places of high risk. I tested whether four specific, hypothesized fine-scale risk factors are correlated with changes in current elk browsing pressure on aspen, or with aspen recruitment since wolf reintroduction, in the Daly Creek drainage in Yellowstone National Park, and near two aspen enclosures outside of the park boundary. Aspen were not responding to hypothesized fine-scale risk factors in ways consistent with the current BMTC hypothesis.

DOI: 10.1890/11-1990.1
PubMed: 23431591

Affiliations:

États-Unis

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Le document en format XML

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<term>Chaine alimentaire</term>
<term>Comportement prédateur</term>
<term>Conservation des ressources naturelles</term>
<term>Facteurs de risque</term>
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<front><div type="abstract" xml:lang="en">Aspen in the Greater Yellowstone Ecosystem are hypothesized to be recovering from decades of heavy browsing by elk due to a behaviorally mediated trophic cascade (BMTC). Several authors have suggested that wolves interact with certain terrain features, creating places of high predation risk at fine spatial scales, and that elk avoid these places, which creates refugia for plants. This hypothesized BMTC could release aspen from elk browsing pressure, leading to a patchy recovery in places of high risk. I tested whether four specific, hypothesized fine-scale risk factors are correlated with changes in current elk browsing pressure on aspen, or with aspen recruitment since wolf reintroduction, in the Daly Creek drainage in Yellowstone National Park, and near two aspen enclosures outside of the park boundary. Aspen were not responding to hypothesized fine-scale risk factors in ways consistent with the current BMTC hypothesis.</div>
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<Abstract><AbstractText>Aspen in the Greater Yellowstone Ecosystem are hypothesized to be recovering from decades of heavy browsing by elk due to a behaviorally mediated trophic cascade (BMTC). Several authors have suggested that wolves interact with certain terrain features, creating places of high predation risk at fine spatial scales, and that elk avoid these places, which creates refugia for plants. This hypothesized BMTC could release aspen from elk browsing pressure, leading to a patchy recovery in places of high risk. I tested whether four specific, hypothesized fine-scale risk factors are correlated with changes in current elk browsing pressure on aspen, or with aspen recruitment since wolf reintroduction, in the Daly Creek drainage in Yellowstone National Park, and near two aspen enclosures outside of the park boundary. Aspen were not responding to hypothesized fine-scale risk factors in ways consistent with the current BMTC hypothesis.</AbstractText>
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Predation risk, elk, and aspen: tests of a behaviorally mediated trophic cascade in the Greater Yellowstone Ecosystem.

Predation risk, elk, and aspen: tests of a behaviorally mediated trophic cascade in the Greater Yellowstone Ecosystem.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki