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Seasonal variation in preference dictates space use in an invasive generalist
BACKGROUND: The spatiotemporal distribution of resources is a critical component of realized animal distributions. In agricultural landscapes, space use by generalist consumers is influenced by ephemeral resource availability that may produce behavioral differences across agricultural seasons, resul...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054371/ https://www.ncbi.nlm.nih.gov/pubmed/30028855 http://dx.doi.org/10.1371/journal.pone.0199078 |
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author | Paolini, Kelsey E. Strickland, Bronson K. Tegt, Jessica L. VerCauteren, Kurt C. Street, Garrett M. |
author_facet | Paolini, Kelsey E. Strickland, Bronson K. Tegt, Jessica L. VerCauteren, Kurt C. Street, Garrett M. |
author_sort | Paolini, Kelsey E. |
collection | PubMed |
description | BACKGROUND: The spatiotemporal distribution of resources is a critical component of realized animal distributions. In agricultural landscapes, space use by generalist consumers is influenced by ephemeral resource availability that may produce behavioral differences across agricultural seasons, resulting in economic and production consequences and increased human-wildlife conflict. Our objective was to assess changes in habitat selection across seasons in an invasive generalist omnivore (feral pigs, Sus scrofa). Hypothesizing that pig space use is primarily driven by forage availability, we predicted strong selection for the most nutritionally beneficial crops and resource types as agricultural seasons progressed. We deployed GPS collars on 13 adult feral pigs in the Mississippi Alluvial Valley to study resource selection in a fragmented agricultural landscape. We estimated resource selection using mixed-effect logistic regression to assess variation in selection across planting, growing, harvest, and fallow seasons. RESULTS: We found that feral pigs varied resource selection across seasons, particularly for corn (Zea mais). We also detected seasonal dependencies in proportional coverage on the net probability of selection of a land unit (e.g., selection was generally strongest for locations composed of both agricultural and natural habitat), resulting in marked variation in predicted space use among agricultural seasons. CONCLUSIONS: These findings indicate behavioral changes in selection across agricultural seasons are driven by complex interactions between the availabilities of temporally dynamic resources and temporally static natural cover. Temporal variations in resource selection trends indicate seasonal responses to crop phenology which suggests a season-specific habitat functional response. |
format | Online Article Text |
id | pubmed-6054371 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-60543712018-07-27 Seasonal variation in preference dictates space use in an invasive generalist Paolini, Kelsey E. Strickland, Bronson K. Tegt, Jessica L. VerCauteren, Kurt C. Street, Garrett M. PLoS One Research Article BACKGROUND: The spatiotemporal distribution of resources is a critical component of realized animal distributions. In agricultural landscapes, space use by generalist consumers is influenced by ephemeral resource availability that may produce behavioral differences across agricultural seasons, resulting in economic and production consequences and increased human-wildlife conflict. Our objective was to assess changes in habitat selection across seasons in an invasive generalist omnivore (feral pigs, Sus scrofa). Hypothesizing that pig space use is primarily driven by forage availability, we predicted strong selection for the most nutritionally beneficial crops and resource types as agricultural seasons progressed. We deployed GPS collars on 13 adult feral pigs in the Mississippi Alluvial Valley to study resource selection in a fragmented agricultural landscape. We estimated resource selection using mixed-effect logistic regression to assess variation in selection across planting, growing, harvest, and fallow seasons. RESULTS: We found that feral pigs varied resource selection across seasons, particularly for corn (Zea mais). We also detected seasonal dependencies in proportional coverage on the net probability of selection of a land unit (e.g., selection was generally strongest for locations composed of both agricultural and natural habitat), resulting in marked variation in predicted space use among agricultural seasons. CONCLUSIONS: These findings indicate behavioral changes in selection across agricultural seasons are driven by complex interactions between the availabilities of temporally dynamic resources and temporally static natural cover. Temporal variations in resource selection trends indicate seasonal responses to crop phenology which suggests a season-specific habitat functional response. Public Library of Science 2018-07-20 /pmc/articles/PMC6054371/ /pubmed/30028855 http://dx.doi.org/10.1371/journal.pone.0199078 Text en https://creativecommons.org/publicdomain/zero/1.0/ This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 (https://creativecommons.org/publicdomain/zero/1.0/) public domain dedication. |
spellingShingle | Research Article Paolini, Kelsey E. Strickland, Bronson K. Tegt, Jessica L. VerCauteren, Kurt C. Street, Garrett M. Seasonal variation in preference dictates space use in an invasive generalist |
title | Seasonal variation in preference dictates space use in an invasive generalist |
title_full | Seasonal variation in preference dictates space use in an invasive generalist |
title_fullStr | Seasonal variation in preference dictates space use in an invasive generalist |
title_full_unstemmed | Seasonal variation in preference dictates space use in an invasive generalist |
title_short | Seasonal variation in preference dictates space use in an invasive generalist |
title_sort | seasonal variation in preference dictates space use in an invasive generalist |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6054371/ https://www.ncbi.nlm.nih.gov/pubmed/30028855 http://dx.doi.org/10.1371/journal.pone.0199078 |
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