Insect-mediated apparent competition between mammals in a boreal food web
While the important role of animal-mediated interactions in the top-down restructuring of plant communities is well documented, less is known of their ensuing repercussions at higher trophic levels. We demonstrate how typically decoupled ecological interactions may become intertwined such that the i...
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ftpubmed:oai:pubmedcentral.nih.gov:8325153 2023-05-15T13:13:09+02:00 Insect-mediated apparent competition between mammals in a boreal food web Labadie, Guillemette McLoughlin, Philip D. Hebblewhite, Mark Fortin, Daniel 2021-07-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8325153/ http://www.ncbi.nlm.nih.gov/pubmed/34282006 https://doi.org/10.1073/pnas.2022892118 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8325153/ http://www.ncbi.nlm.nih.gov/pubmed/34282006 http://dx.doi.org/10.1073/pnas.2022892118 https://www.pnas.org/site/aboutpnas/licenses.xhtmlPublished under the PNAS license (https://www.pnas.org/site/aboutpnas/licenses.xhtml) . Proc Natl Acad Sci U S A Biological Sciences Text 2021 ftpubmed https://doi.org/10.1073/pnas.2022892118 2022-01-23T01:25:30Z While the important role of animal-mediated interactions in the top-down restructuring of plant communities is well documented, less is known of their ensuing repercussions at higher trophic levels. We demonstrate how typically decoupled ecological interactions may become intertwined such that the impact of an insect pest on forest structure and composition alters predator–prey interactions among large mammals. Specifically, we show how irruptions in a common, cyclic insect pest of the boreal forest, the spruce budworm (Choristoneura fumiferana), modulated an indirect trophic interaction by initiating a flush in deciduous vegetation that benefited moose (Alces alces), in turn strengthening apparent competition between moose and threatened boreal caribou (Rangifer tarandus caribou) via wolf (Canis lupus) predation. Critically, predation on caribou postoutbreak was exacerbated by human activity (salvage logging). We believe our observations of significant, large-scale reverberating consumer–producer–consumer interactions are likely to be common in nature. Text Alces alces Canis lupus caribou Rangifer tarandus PubMed Central (PMC) Proceedings of the National Academy of Sciences 118 30 e2022892118 |
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Biological Sciences Labadie, Guillemette McLoughlin, Philip D. Hebblewhite, Mark Fortin, Daniel Insect-mediated apparent competition between mammals in a boreal food web |
topic_facet |
Biological Sciences |
description |
While the important role of animal-mediated interactions in the top-down restructuring of plant communities is well documented, less is known of their ensuing repercussions at higher trophic levels. We demonstrate how typically decoupled ecological interactions may become intertwined such that the impact of an insect pest on forest structure and composition alters predator–prey interactions among large mammals. Specifically, we show how irruptions in a common, cyclic insect pest of the boreal forest, the spruce budworm (Choristoneura fumiferana), modulated an indirect trophic interaction by initiating a flush in deciduous vegetation that benefited moose (Alces alces), in turn strengthening apparent competition between moose and threatened boreal caribou (Rangifer tarandus caribou) via wolf (Canis lupus) predation. Critically, predation on caribou postoutbreak was exacerbated by human activity (salvage logging). We believe our observations of significant, large-scale reverberating consumer–producer–consumer interactions are likely to be common in nature. |
format |
Text |
author |
Labadie, Guillemette McLoughlin, Philip D. Hebblewhite, Mark Fortin, Daniel |
author_facet |
Labadie, Guillemette McLoughlin, Philip D. Hebblewhite, Mark Fortin, Daniel |
author_sort |
Labadie, Guillemette |
title |
Insect-mediated apparent competition between mammals in a boreal food web |
title_short |
Insect-mediated apparent competition between mammals in a boreal food web |
title_full |
Insect-mediated apparent competition between mammals in a boreal food web |
title_fullStr |
Insect-mediated apparent competition between mammals in a boreal food web |
title_full_unstemmed |
Insect-mediated apparent competition between mammals in a boreal food web |
title_sort |
insect-mediated apparent competition between mammals in a boreal food web |
publisher |
National Academy of Sciences |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8325153/ http://www.ncbi.nlm.nih.gov/pubmed/34282006 https://doi.org/10.1073/pnas.2022892118 |
genre |
Alces alces Canis lupus caribou Rangifer tarandus |
genre_facet |
Alces alces Canis lupus caribou Rangifer tarandus |
op_source |
Proc Natl Acad Sci U S A |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8325153/ http://www.ncbi.nlm.nih.gov/pubmed/34282006 http://dx.doi.org/10.1073/pnas.2022892118 |
op_rights |
https://www.pnas.org/site/aboutpnas/licenses.xhtmlPublished under the PNAS license (https://www.pnas.org/site/aboutpnas/licenses.xhtml) . |
op_doi |
https://doi.org/10.1073/pnas.2022892118 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
118 |
container_issue |
30 |
container_start_page |
e2022892118 |
_version_ |
1766256321478262784 |