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Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist

1. Studies of impacts of fragmentation have focused heavily on measures of species presence or absence in fragments, or species richness in relation to fragmentation, but have often not considered the effects of fragmentation on ranging behavior of individual species. Effective management will benef...

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Autores principales: Gardiner, Riana, Proft, Kirstin, Comte, Sebastien, Jones, Menna, Johnson, Chris N.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6953562/
https://www.ncbi.nlm.nih.gov/pubmed/31938498
http://dx.doi.org/10.1002/ece3.5837
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author Gardiner, Riana
Proft, Kirstin
Comte, Sebastien
Jones, Menna
Johnson, Chris N.
author_facet Gardiner, Riana
Proft, Kirstin
Comte, Sebastien
Jones, Menna
Johnson, Chris N.
author_sort Gardiner, Riana
collection PubMed
description 1. Studies of impacts of fragmentation have focused heavily on measures of species presence or absence in fragments, or species richness in relation to fragmentation, but have often not considered the effects of fragmentation on ranging behavior of individual species. Effective management will benefit from knowledge of the effects of fragmentation on space use by species. 2. We investigated how a woodland specialist, the eastern bettong (Bettongia gaimardi), responded to fragmentation in an agricultural landscape, the Midlands region of Tasmania, Australia. We tested whether individual bettongs could adjust home range size to maintain access to essential habitat across three sites differing in degree of fragmentation. 3. We used GPS tracking to measure the home ranges of individual bettongs. Our models tested the effects of habitat aggregation and habitat amount measured at two radii comparable to a typical core range (250 m) and a typical home range (750 m), and habitat quality and sex on individual home range. We also tested the relationship between fragmentation on woodland used to determine whether individuals could compensate for fragmentation. 4. Depending on the spatial scale of fragmentation measured, bettongs altered their movement to meet their habitat requirements. Our top model suggested that at the core range scale, individuals had smaller ranges when habitat is more aggregated. The second model showed support for habitat amount at the core range, suggesting individuals can occupy larger areas when there is a higher amount of habitat, regardless of configuration. 5. Species that are relatively mobile may be able to compensate for the effects of habitat fragmentation by altering their movement. We highlight that any patch size is of value within a home range and management efforts should focus on maintaining sufficient habitat especially at the core range scale.
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spelling pubmed-69535622020-01-14 Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist Gardiner, Riana Proft, Kirstin Comte, Sebastien Jones, Menna Johnson, Chris N. Ecol Evol Original Research 1. Studies of impacts of fragmentation have focused heavily on measures of species presence or absence in fragments, or species richness in relation to fragmentation, but have often not considered the effects of fragmentation on ranging behavior of individual species. Effective management will benefit from knowledge of the effects of fragmentation on space use by species. 2. We investigated how a woodland specialist, the eastern bettong (Bettongia gaimardi), responded to fragmentation in an agricultural landscape, the Midlands region of Tasmania, Australia. We tested whether individual bettongs could adjust home range size to maintain access to essential habitat across three sites differing in degree of fragmentation. 3. We used GPS tracking to measure the home ranges of individual bettongs. Our models tested the effects of habitat aggregation and habitat amount measured at two radii comparable to a typical core range (250 m) and a typical home range (750 m), and habitat quality and sex on individual home range. We also tested the relationship between fragmentation on woodland used to determine whether individuals could compensate for fragmentation. 4. Depending on the spatial scale of fragmentation measured, bettongs altered their movement to meet their habitat requirements. Our top model suggested that at the core range scale, individuals had smaller ranges when habitat is more aggregated. The second model showed support for habitat amount at the core range, suggesting individuals can occupy larger areas when there is a higher amount of habitat, regardless of configuration. 5. Species that are relatively mobile may be able to compensate for the effects of habitat fragmentation by altering their movement. We highlight that any patch size is of value within a home range and management efforts should focus on maintaining sufficient habitat especially at the core range scale. John Wiley and Sons Inc. 2019-11-18 /pmc/articles/PMC6953562/ /pubmed/31938498 http://dx.doi.org/10.1002/ece3.5837 Text en © 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.
spellingShingle Original Research
Gardiner, Riana
Proft, Kirstin
Comte, Sebastien
Jones, Menna
Johnson, Chris N.
Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist
title Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist
title_full Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist
title_fullStr Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist
title_full_unstemmed Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist
title_short Home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist
title_sort home range size scales to habitat amount and increasing fragmentation in a mobile woodland specialist
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6953562/
https://www.ncbi.nlm.nih.gov/pubmed/31938498
http://dx.doi.org/10.1002/ece3.5837
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