Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.

Although prey species typically respond to the most limiting factors at coarse spatiotemporal scales while addressing biological requirements at finer scales, such behaviour may become challenging for species inhabiting human altered landscapes. We investigated how woodland caribou, a threatened spe...

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Autores principales:	David Beauchesne, Jochen Ag Jaeger, Martin-Hugues St-Laurent
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/04be03a53a94434796c294a7067183d8
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spelling	oai:doaj.org-article:04be03a53a94434796c294a7067183d82021-11-18T08:48:23ZDisentangling woodland caribou movements in response to clearcuts and roads across temporal scales.1932-620310.1371/journal.pone.0077514https://doaj.org/article/04be03a53a94434796c294a7067183d82013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24223713/?tool=EBIhttps://doaj.org/toc/1932-6203Although prey species typically respond to the most limiting factors at coarse spatiotemporal scales while addressing biological requirements at finer scales, such behaviour may become challenging for species inhabiting human altered landscapes. We investigated how woodland caribou, a threatened species inhabiting North-American boreal forests, modified their fine-scale movements when confronted with forest management features (i.e. clearcuts and roads). We used GPS telemetry data collected between 2004 and 2010 on 49 female caribou in a managed area in Québec, Canada. Movements were studied using a use--availability design contrasting observed steps (i.e. line connecting two consecutive locations) with random steps (i.e. proxy of immediate habitat availability). Although caribou mostly avoided disturbances, individuals nonetheless modulated their fine-scale response to disturbances on a daily and annual basis, potentially compromising between risk avoidance in periods of higher vulnerability (i.e. calving, early and late winter) during the day and foraging activities in periods of higher energy requirements (i.e. spring, summer and rut) during dusk/dawn and at night. The local context in which females moved was shown to influence their decision to cross clearcut edges and roads. Indeed, although females typically avoided crossing clearcut edges and roads at low densities, crossing rates were found to rapidly increase in greater disturbance densities. In some instance, however, females were less likely to cross edges and roads as densities increased. Females may then be trapped and forced to use disturbed habitats, known to be associated with higher predation risk. We believe that further increases in anthropogenic disturbances could exacerbate such behavioural responses and ultimately lead to population level consequences.David BeauchesneJochen Ag JaegerMartin-Hugues St-LaurentPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 11, p e77514 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q David Beauchesne Jochen Ag Jaeger Martin-Hugues St-Laurent Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.
description	Although prey species typically respond to the most limiting factors at coarse spatiotemporal scales while addressing biological requirements at finer scales, such behaviour may become challenging for species inhabiting human altered landscapes. We investigated how woodland caribou, a threatened species inhabiting North-American boreal forests, modified their fine-scale movements when confronted with forest management features (i.e. clearcuts and roads). We used GPS telemetry data collected between 2004 and 2010 on 49 female caribou in a managed area in Québec, Canada. Movements were studied using a use--availability design contrasting observed steps (i.e. line connecting two consecutive locations) with random steps (i.e. proxy of immediate habitat availability). Although caribou mostly avoided disturbances, individuals nonetheless modulated their fine-scale response to disturbances on a daily and annual basis, potentially compromising between risk avoidance in periods of higher vulnerability (i.e. calving, early and late winter) during the day and foraging activities in periods of higher energy requirements (i.e. spring, summer and rut) during dusk/dawn and at night. The local context in which females moved was shown to influence their decision to cross clearcut edges and roads. Indeed, although females typically avoided crossing clearcut edges and roads at low densities, crossing rates were found to rapidly increase in greater disturbance densities. In some instance, however, females were less likely to cross edges and roads as densities increased. Females may then be trapped and forced to use disturbed habitats, known to be associated with higher predation risk. We believe that further increases in anthropogenic disturbances could exacerbate such behavioural responses and ultimately lead to population level consequences.
format	article
author	David Beauchesne Jochen Ag Jaeger Martin-Hugues St-Laurent
author_facet	David Beauchesne Jochen Ag Jaeger Martin-Hugues St-Laurent
author_sort	David Beauchesne
title	Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.
title_short	Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.
title_full	Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.
title_fullStr	Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.
title_full_unstemmed	Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.
title_sort	disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/04be03a53a94434796c294a7067183d8
work_keys_str_mv	AT davidbeauchesne disentanglingwoodlandcariboumovementsinresponsetoclearcutsandroadsacrosstemporalscales AT jochenagjaeger disentanglingwoodlandcariboumovementsinresponsetoclearcutsandroadsacrosstemporalscales AT martinhuguesstlaurent disentanglingwoodlandcariboumovementsinresponsetoclearcutsandroadsacrosstemporalscales
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Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales.

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