Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country
Spatial heterogeneity in the strength of trophic interactions is a fundamental property of food web spatial dynamics. The feeding effort of herbivores should reflect adaptive decisions that only become rewarding when foraging gains exceed 1) the metabolic costs, 2) the missed opportunity costs of no...
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ftdryad:oai:v1.datadryad.org:10255/dryad.52566 2023-05-15T15:51:18+02:00 Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country Harvey, Léa Fortin, Daniel 2013-09-12T13:52:36Z http://hdl.handle.net/10255/dryad.52566 https://doi.org/10.5061/dryad.4dp00 unknown doi:10.5061/dryad.4dp00/1 doi:10.1371/journal.pone.0073324 PMID:24039909 doi:10.5061/dryad.4dp00 Harvey L, Fortin D (2013) Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country. PLoS ONE 8(9): e73324. http://hdl.handle.net/10255/dryad.52566 Bison foraging ecology plant-herbivore interactions predator-prey interactions spatial game wolf scale Article 2013 ftdryad https://doi.org/10.5061/dryad.4dp00 https://doi.org/10.5061/dryad.4dp00/1 https://doi.org/10.1371/journal.pone.0073324 2020-01-01T15:03:05Z Spatial heterogeneity in the strength of trophic interactions is a fundamental property of food web spatial dynamics. The feeding effort of herbivores should reflect adaptive decisions that only become rewarding when foraging gains exceed 1) the metabolic costs, 2) the missed opportunity costs of not foraging elsewhere, and 3) the foraging costs of anti-predator behaviour. Two aspects of these costs remain largely unexplored: the link between the strength of plant-herbivore interactions and the spatial scale of food-quality assessment, and the predator-prey spatial game. We modeled the foraging effort of free-ranging plains bison (Bison bison bison) in winter, within a mosaic of discrete meadows. Spatial patterns of bison herbivory were largely driven by a search for high net energy gains and, to a lesser degree, by the spatial game with grey wolves (Canis lupus). Bison decreased local feeding effort with increasing metabolic and missed opportunity costs. Bison herbivory was most consistent with a broad-scale assessment of food patch quality, i.e., bison grazed more intensively in patches with a low missed opportunity cost relative to other patches available in the landscape. Bison and wolves had a higher probability of using the same meadows than expected randomly. This co-occurrence indicates wolves are ahead in the spatial game they play with bison. Wolves influenced bison foraging at fine scale, as bison tended to consume less biomass at each feeding station when in meadows where the risk of a wolf's arrival was relatively high. Also, bison left more high-quality vegetation in large than small meadows. This behavior does not maximize their energy intake rate, but is consistent with bison playing a shell game with wolves. Our assessment of bison foraging in a natural setting clarifies the complex nature of plant-herbivore interactions under predation risk, and reveals how spatial patterns in herbivory emerge from multi-scale landscape heterogeneity. Article in Journal/Newspaper Canis lupus Bison bison bison Plains Bison Dryad Digital Repository (Duke University) |
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Open Polar |
collection |
Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Bison foraging ecology plant-herbivore interactions predator-prey interactions spatial game wolf scale |
spellingShingle |
Bison foraging ecology plant-herbivore interactions predator-prey interactions spatial game wolf scale Harvey, Léa Fortin, Daniel Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country |
topic_facet |
Bison foraging ecology plant-herbivore interactions predator-prey interactions spatial game wolf scale |
description |
Spatial heterogeneity in the strength of trophic interactions is a fundamental property of food web spatial dynamics. The feeding effort of herbivores should reflect adaptive decisions that only become rewarding when foraging gains exceed 1) the metabolic costs, 2) the missed opportunity costs of not foraging elsewhere, and 3) the foraging costs of anti-predator behaviour. Two aspects of these costs remain largely unexplored: the link between the strength of plant-herbivore interactions and the spatial scale of food-quality assessment, and the predator-prey spatial game. We modeled the foraging effort of free-ranging plains bison (Bison bison bison) in winter, within a mosaic of discrete meadows. Spatial patterns of bison herbivory were largely driven by a search for high net energy gains and, to a lesser degree, by the spatial game with grey wolves (Canis lupus). Bison decreased local feeding effort with increasing metabolic and missed opportunity costs. Bison herbivory was most consistent with a broad-scale assessment of food patch quality, i.e., bison grazed more intensively in patches with a low missed opportunity cost relative to other patches available in the landscape. Bison and wolves had a higher probability of using the same meadows than expected randomly. This co-occurrence indicates wolves are ahead in the spatial game they play with bison. Wolves influenced bison foraging at fine scale, as bison tended to consume less biomass at each feeding station when in meadows where the risk of a wolf's arrival was relatively high. Also, bison left more high-quality vegetation in large than small meadows. This behavior does not maximize their energy intake rate, but is consistent with bison playing a shell game with wolves. Our assessment of bison foraging in a natural setting clarifies the complex nature of plant-herbivore interactions under predation risk, and reveals how spatial patterns in herbivory emerge from multi-scale landscape heterogeneity. |
format |
Article in Journal/Newspaper |
author |
Harvey, Léa Fortin, Daniel |
author_facet |
Harvey, Léa Fortin, Daniel |
author_sort |
Harvey, Léa |
title |
Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country |
title_short |
Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country |
title_full |
Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country |
title_fullStr |
Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country |
title_full_unstemmed |
Data from: Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country |
title_sort |
data from: spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country |
publishDate |
2013 |
url |
http://hdl.handle.net/10255/dryad.52566 https://doi.org/10.5061/dryad.4dp00 |
genre |
Canis lupus Bison bison bison Plains Bison |
genre_facet |
Canis lupus Bison bison bison Plains Bison |
op_relation |
doi:10.5061/dryad.4dp00/1 doi:10.1371/journal.pone.0073324 PMID:24039909 doi:10.5061/dryad.4dp00 Harvey L, Fortin D (2013) Spatial heterogeneity in the strength of plant-herbivore interactions under predation risk: the tale of bison foraging in wolf country. PLoS ONE 8(9): e73324. http://hdl.handle.net/10255/dryad.52566 |
op_doi |
https://doi.org/10.5061/dryad.4dp00 https://doi.org/10.5061/dryad.4dp00/1 https://doi.org/10.1371/journal.pone.0073324 |
_version_ |
1766386450976210944 |