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Mapping potential connections between Southern Africa’s elephant populations

Southern Africa spans nearly 7 million km(2) and contains approximately 80% of the world’s savannah elephants (Loxodonta africana) mostly living in isolated protected areas. Here we ask what are the prospects for improving the connections between these populations? We combine 1.2 million telemetry o...

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Autores principales: Huang, Ryan M., van Aarde, Rudi J., Pimm, Stuart L., Chase, Michael J., Leggett, Keith
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553058/
https://www.ncbi.nlm.nih.gov/pubmed/36219597
http://dx.doi.org/10.1371/journal.pone.0275791
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author Huang, Ryan M.
van Aarde, Rudi J.
Pimm, Stuart L.
Chase, Michael J.
Leggett, Keith
author_facet Huang, Ryan M.
van Aarde, Rudi J.
Pimm, Stuart L.
Chase, Michael J.
Leggett, Keith
author_sort Huang, Ryan M.
collection PubMed
description Southern Africa spans nearly 7 million km(2) and contains approximately 80% of the world’s savannah elephants (Loxodonta africana) mostly living in isolated protected areas. Here we ask what are the prospects for improving the connections between these populations? We combine 1.2 million telemetry observations from 254 elephants with spatial data on environmental factors and human land use across eight southern African countries. Telemetry data show what natural features limit elephant movement and what human factors, including fencing, further prevent or restrict dispersal. The resulting intersection of geospatial data and elephant presences provides a map of suitable landscapes that are environmentally appropriate for elephants and where humans allow elephants to occupy. We explore the environmental and anthropogenic constraints in detail using five case studies. Lastly, we review all the major potential connections that may remain to connect a fragmented elephant metapopulation and document connections that are no longer feasible.
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spelling pubmed-95530582022-10-12 Mapping potential connections between Southern Africa’s elephant populations Huang, Ryan M. van Aarde, Rudi J. Pimm, Stuart L. Chase, Michael J. Leggett, Keith PLoS One Research Article Southern Africa spans nearly 7 million km(2) and contains approximately 80% of the world’s savannah elephants (Loxodonta africana) mostly living in isolated protected areas. Here we ask what are the prospects for improving the connections between these populations? We combine 1.2 million telemetry observations from 254 elephants with spatial data on environmental factors and human land use across eight southern African countries. Telemetry data show what natural features limit elephant movement and what human factors, including fencing, further prevent or restrict dispersal. The resulting intersection of geospatial data and elephant presences provides a map of suitable landscapes that are environmentally appropriate for elephants and where humans allow elephants to occupy. We explore the environmental and anthropogenic constraints in detail using five case studies. Lastly, we review all the major potential connections that may remain to connect a fragmented elephant metapopulation and document connections that are no longer feasible. Public Library of Science 2022-10-11 /pmc/articles/PMC9553058/ /pubmed/36219597 http://dx.doi.org/10.1371/journal.pone.0275791 Text en © 2022 Huang et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Huang, Ryan M.
van Aarde, Rudi J.
Pimm, Stuart L.
Chase, Michael J.
Leggett, Keith
Mapping potential connections between Southern Africa’s elephant populations
title Mapping potential connections between Southern Africa’s elephant populations
title_full Mapping potential connections between Southern Africa’s elephant populations
title_fullStr Mapping potential connections between Southern Africa’s elephant populations
title_full_unstemmed Mapping potential connections between Southern Africa’s elephant populations
title_short Mapping potential connections between Southern Africa’s elephant populations
title_sort mapping potential connections between southern africa’s elephant populations
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553058/
https://www.ncbi.nlm.nih.gov/pubmed/36219597
http://dx.doi.org/10.1371/journal.pone.0275791
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