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Density and population viability of coastal marten: a rare and geographically isolated small carnivore
Pacific martens (Martes caurina humboldtensis) in coastal forests of Oregon and northern California in the United States are rare and geographically isolated, prompting a petition for listing under the Endangered Species Act. If listed, regulations have the potential to influence land-use decisions...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PeerJ Inc.
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5889706/ https://www.ncbi.nlm.nih.gov/pubmed/29637018 http://dx.doi.org/10.7717/peerj.4530 |
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author | Linnell, Mark A. Moriarty, Katie Green, David S. Levi, Taal |
author_facet | Linnell, Mark A. Moriarty, Katie Green, David S. Levi, Taal |
author_sort | Linnell, Mark A. |
collection | PubMed |
description | Pacific martens (Martes caurina humboldtensis) in coastal forests of Oregon and northern California in the United States are rare and geographically isolated, prompting a petition for listing under the Endangered Species Act. If listed, regulations have the potential to influence land-use decisions on public and private lands, but no estimates of population size, density, or viability of remnant marten populations are available for evaluating their conservation status. We used GPS and VHF telemetry and spatial mark-resight to estimate home ranges, density, and population size of Pacific martens in the Oregon Dunes National Recreation Area, central coast Oregon, USA. We then estimated population viability at differing levels of human-caused mortality (e.g., vehicle mortality). Marten home ranges were small on average (females = 0.8 km(2), males 1.5 km(2)) and density (1.13 martens/1 km(2)) was the highest reported for North American populations (M. caurina, M. americana). We estimated 71 adult martens (95% CRI [41–87]) across two subpopulations separated by a large barrier (Umpqua River). Using population viability analysis, extinction risk for a subpopulation of 30 martens, approximately the size of the subpopulation south of the Umpqua River, ranged from 32% to 99% with two or three annual human-caused mortalities within 30 years. Absent population expansion, limiting human-caused mortalities will likely have the greatest conservation impact. |
format | Online Article Text |
id | pubmed-5889706 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | PeerJ Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-58897062018-04-10 Density and population viability of coastal marten: a rare and geographically isolated small carnivore Linnell, Mark A. Moriarty, Katie Green, David S. Levi, Taal PeerJ Biodiversity Pacific martens (Martes caurina humboldtensis) in coastal forests of Oregon and northern California in the United States are rare and geographically isolated, prompting a petition for listing under the Endangered Species Act. If listed, regulations have the potential to influence land-use decisions on public and private lands, but no estimates of population size, density, or viability of remnant marten populations are available for evaluating their conservation status. We used GPS and VHF telemetry and spatial mark-resight to estimate home ranges, density, and population size of Pacific martens in the Oregon Dunes National Recreation Area, central coast Oregon, USA. We then estimated population viability at differing levels of human-caused mortality (e.g., vehicle mortality). Marten home ranges were small on average (females = 0.8 km(2), males 1.5 km(2)) and density (1.13 martens/1 km(2)) was the highest reported for North American populations (M. caurina, M. americana). We estimated 71 adult martens (95% CRI [41–87]) across two subpopulations separated by a large barrier (Umpqua River). Using population viability analysis, extinction risk for a subpopulation of 30 martens, approximately the size of the subpopulation south of the Umpqua River, ranged from 32% to 99% with two or three annual human-caused mortalities within 30 years. Absent population expansion, limiting human-caused mortalities will likely have the greatest conservation impact. PeerJ Inc. 2018-04-04 /pmc/articles/PMC5889706/ /pubmed/29637018 http://dx.doi.org/10.7717/peerj.4530 Text en http://creativecommons.org/publicdomain/zero/1.0/ This is an open access article, free of all copyright, made available under the Creative Commons Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/) . This work may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. |
spellingShingle | Biodiversity Linnell, Mark A. Moriarty, Katie Green, David S. Levi, Taal Density and population viability of coastal marten: a rare and geographically isolated small carnivore |
title | Density and population viability of coastal marten: a rare and geographically isolated small carnivore |
title_full | Density and population viability of coastal marten: a rare and geographically isolated small carnivore |
title_fullStr | Density and population viability of coastal marten: a rare and geographically isolated small carnivore |
title_full_unstemmed | Density and population viability of coastal marten: a rare and geographically isolated small carnivore |
title_short | Density and population viability of coastal marten: a rare and geographically isolated small carnivore |
title_sort | density and population viability of coastal marten: a rare and geographically isolated small carnivore |
topic | Biodiversity |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5889706/ https://www.ncbi.nlm.nih.gov/pubmed/29637018 http://dx.doi.org/10.7717/peerj.4530 |
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