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Ecological marginalization is widespread and increases extinction risk in mammals

Human land-use results in widespread range change across taxa. Anthropogenic pressures can result in species’ realized niches expanding, shifting, or contracting. Marginalization occurs when contraction constrains species to the geographic or ecological extremes of their historic niche. Using 4,785...

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Autores principales: Britnell, Jake Alan, Zhu, Yichun, Kerley, Graham Ian Holme, Shultz, Susanne
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9934025/
https://www.ncbi.nlm.nih.gov/pubmed/36623195
http://dx.doi.org/10.1073/pnas.2205315120
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author Britnell, Jake Alan
Zhu, Yichun
Kerley, Graham Ian Holme
Shultz, Susanne
author_facet Britnell, Jake Alan
Zhu, Yichun
Kerley, Graham Ian Holme
Shultz, Susanne
author_sort Britnell, Jake Alan
collection PubMed
description Human land-use results in widespread range change across taxa. Anthropogenic pressures can result in species’ realized niches expanding, shifting, or contracting. Marginalization occurs when contraction constrains species to the geographic or ecological extremes of their historic niche. Using 4,785 terrestrial mammal species, we show that range contraction results in niche space and habitat diversity loss. Additionally, ecological marginalization is a common consequence of range contraction caused by human land use change. Remnant populations become located in the climatic and topographic extremes of their historic niche that are more likely to be at the periphery of their historic niche at greater distances from historic niche centroids. This ecological marginalization is associated with poor performance and increased extinction risk independent of geographic range loss. Range loss and marginalization may create a “double whammy” in vulnerable groups, such as large-bodied species and species with small geographical range size. Our results reveal a hitherto unrecognized conservation threat that is vital to incorporate into conservation assessment and management.
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spelling pubmed-99340252023-07-09 Ecological marginalization is widespread and increases extinction risk in mammals Britnell, Jake Alan Zhu, Yichun Kerley, Graham Ian Holme Shultz, Susanne Proc Natl Acad Sci U S A Biological Sciences Human land-use results in widespread range change across taxa. Anthropogenic pressures can result in species’ realized niches expanding, shifting, or contracting. Marginalization occurs when contraction constrains species to the geographic or ecological extremes of their historic niche. Using 4,785 terrestrial mammal species, we show that range contraction results in niche space and habitat diversity loss. Additionally, ecological marginalization is a common consequence of range contraction caused by human land use change. Remnant populations become located in the climatic and topographic extremes of their historic niche that are more likely to be at the periphery of their historic niche at greater distances from historic niche centroids. This ecological marginalization is associated with poor performance and increased extinction risk independent of geographic range loss. Range loss and marginalization may create a “double whammy” in vulnerable groups, such as large-bodied species and species with small geographical range size. Our results reveal a hitherto unrecognized conservation threat that is vital to incorporate into conservation assessment and management. National Academy of Sciences 2023-01-09 2023-01-17 /pmc/articles/PMC9934025/ /pubmed/36623195 http://dx.doi.org/10.1073/pnas.2205315120 Text en Copyright © 2023 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/This article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) .
spellingShingle Biological Sciences
Britnell, Jake Alan
Zhu, Yichun
Kerley, Graham Ian Holme
Shultz, Susanne
Ecological marginalization is widespread and increases extinction risk in mammals
title Ecological marginalization is widespread and increases extinction risk in mammals
title_full Ecological marginalization is widespread and increases extinction risk in mammals
title_fullStr Ecological marginalization is widespread and increases extinction risk in mammals
title_full_unstemmed Ecological marginalization is widespread and increases extinction risk in mammals
title_short Ecological marginalization is widespread and increases extinction risk in mammals
title_sort ecological marginalization is widespread and increases extinction risk in mammals
topic Biological Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9934025/
https://www.ncbi.nlm.nih.gov/pubmed/36623195
http://dx.doi.org/10.1073/pnas.2205315120
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