Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant
Changes in ecological conditions can induce changes in behavior and demography of wild organisms, which in turn may influence population dynamics. Black brant (Branta bernicla nigricans) nesting in colonies on the Yukon–Kuskokwim Delta (YKD) in western Alaska have declined substantially (~50%) since...
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2019
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509370/ http://www.ncbi.nlm.nih.gov/pubmed/31110679 https://doi.org/10.1002/ece3.5118 |
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ftpubmed:oai:pubmedcentral.nih.gov:6509370 2023-05-15T15:46:08+02:00 Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant Lohman, Madeleine G. Riecke, Thomas V. Acevedo, Cheyenne R. Person, Brian T. Schmutz, Joel A. Uher‐Koch, Brian D. Sedinger, James S. 2019-04-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509370/ http://www.ncbi.nlm.nih.gov/pubmed/31110679 https://doi.org/10.1002/ece3.5118 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509370/ http://www.ncbi.nlm.nih.gov/pubmed/31110679 http://dx.doi.org/10.1002/ece3.5118 © 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Original Research Text 2019 ftpubmed https://doi.org/10.1002/ece3.5118 2019-05-26T00:18:05Z Changes in ecological conditions can induce changes in behavior and demography of wild organisms, which in turn may influence population dynamics. Black brant (Branta bernicla nigricans) nesting in colonies on the Yukon–Kuskokwim Delta (YKD) in western Alaska have declined substantially (~50%) since the turn of the century. Black brant are herbivores that rely heavily on Carex subspathacea (Hoppner's sedge) during growth and development. The availability of C. subspathacea affects gosling growth rates, which subsequently affect pre‐ and postfledging survival, as well as size and breeding probability as an adult. We predicted that long‐term declines in C. subspathacea have affected gosling growth rates, despite the potential of behavior to buffer changes in food availability during brood rearing. We used Bayesian hierarchical mixed‐effects models to examine long‐term (1987–2015) shifts in brant behavior during brood rearing, forage availability, and gosling growth rates at the Tutakoke River colony. We showed that locomotion behaviors have increased (β = 0.05, 95% CRI: 0.032–0.068) while resting behaviors have decreased (β = −0.024, 95% CRI: −0.041 to −0.007), potentially in response to long‐term shifts in forage availability and brood density. Concurrently, gosling growth rates have decreased substantially (β = −0.100, 95% CRI: −0.191 to −0.016) despite shifts in behavior, mirroring long‐term declines in the abundance of C. subspathacea (β = −0.191, 95% CRI: −0.355 to −0.032). These results have important implications for individual fitness and population viability, where shifts in gosling behavior putatively fail to mitigate long‐term declines in forage availability. Text Branta bernicla Kuskokwim Alaska Yukon PubMed Central (PMC) Brant ENVELOPE(7.105,7.105,62.917,62.917) Yukon Ecology and Evolution 9 9 5281 5291 |
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English |
topic |
Original Research |
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Original Research Lohman, Madeleine G. Riecke, Thomas V. Acevedo, Cheyenne R. Person, Brian T. Schmutz, Joel A. Uher‐Koch, Brian D. Sedinger, James S. Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant |
topic_facet |
Original Research |
description |
Changes in ecological conditions can induce changes in behavior and demography of wild organisms, which in turn may influence population dynamics. Black brant (Branta bernicla nigricans) nesting in colonies on the Yukon–Kuskokwim Delta (YKD) in western Alaska have declined substantially (~50%) since the turn of the century. Black brant are herbivores that rely heavily on Carex subspathacea (Hoppner's sedge) during growth and development. The availability of C. subspathacea affects gosling growth rates, which subsequently affect pre‐ and postfledging survival, as well as size and breeding probability as an adult. We predicted that long‐term declines in C. subspathacea have affected gosling growth rates, despite the potential of behavior to buffer changes in food availability during brood rearing. We used Bayesian hierarchical mixed‐effects models to examine long‐term (1987–2015) shifts in brant behavior during brood rearing, forage availability, and gosling growth rates at the Tutakoke River colony. We showed that locomotion behaviors have increased (β = 0.05, 95% CRI: 0.032–0.068) while resting behaviors have decreased (β = −0.024, 95% CRI: −0.041 to −0.007), potentially in response to long‐term shifts in forage availability and brood density. Concurrently, gosling growth rates have decreased substantially (β = −0.100, 95% CRI: −0.191 to −0.016) despite shifts in behavior, mirroring long‐term declines in the abundance of C. subspathacea (β = −0.191, 95% CRI: −0.355 to −0.032). These results have important implications for individual fitness and population viability, where shifts in gosling behavior putatively fail to mitigate long‐term declines in forage availability. |
format |
Text |
author |
Lohman, Madeleine G. Riecke, Thomas V. Acevedo, Cheyenne R. Person, Brian T. Schmutz, Joel A. Uher‐Koch, Brian D. Sedinger, James S. |
author_facet |
Lohman, Madeleine G. Riecke, Thomas V. Acevedo, Cheyenne R. Person, Brian T. Schmutz, Joel A. Uher‐Koch, Brian D. Sedinger, James S. |
author_sort |
Lohman, Madeleine G. |
title |
Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant |
title_short |
Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant |
title_full |
Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant |
title_fullStr |
Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant |
title_full_unstemmed |
Changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant |
title_sort |
changes in behavior are unable to disrupt a trophic cascade involving a specialist herbivore and its food plant |
publisher |
John Wiley and Sons Inc. |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509370/ http://www.ncbi.nlm.nih.gov/pubmed/31110679 https://doi.org/10.1002/ece3.5118 |
long_lat |
ENVELOPE(7.105,7.105,62.917,62.917) |
geographic |
Brant Yukon |
geographic_facet |
Brant Yukon |
genre |
Branta bernicla Kuskokwim Alaska Yukon |
genre_facet |
Branta bernicla Kuskokwim Alaska Yukon |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6509370/ http://www.ncbi.nlm.nih.gov/pubmed/31110679 http://dx.doi.org/10.1002/ece3.5118 |
op_rights |
© 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.5118 |
container_title |
Ecology and Evolution |
container_volume |
9 |
container_issue |
9 |
container_start_page |
5281 |
op_container_end_page |
5291 |
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1766380816197222400 |