LeclercDussaultSt-Laurent2014

Référence

Leclerc, M., Dussault, C. and St-Laurent, M.-H. (2014) Behavioural strategies towards human disturbances explain individual performance in woodland caribou. Oecologia, 176(1):297-306. (Scopus )

Résumé

Behavioural strategies may have important fitness, ecological and evolutionary consequences. In woodland caribou, human disturbances are associated with higher predation risk. Between 2004 and 2011, we investigated if habitat selection strategies of female caribou towards disturbances influenced their calf's survival in managed boreal forest with varying intensities of human disturbances. Calf survival was 53 % and 43 % after 30 and 90 days following birth, respectively, and 52 % of calves that died were killed by black bear. The probability that a female lose its calf to predation was not influenced by habitat composition of her annual home range, but decreased with an increase in proportion of open lichen woodland within her calving home range. At the local scale, females that did not lose their calf displayed stronger avoidance of high road density areas than females that lost their calf to predation. Further, females that lost their calf to predation and that had a low proportion of ≤5-year-old cutovers within their calving home range were mostly observed in areas where these young cutovers were locally absent. Also, females that lost their calf to predation and that had a high proportion of ≤5-year-old cutovers within their calving home range were mostly observed in areas with a high local density of ≤5-year-old cutovers. Our study demonstrates that we have to account for human-induced disturbances at both local and regional scales in order to further enhance effective caribou management plans. We demonstrate that disturbances not only impact spatial distribution of individuals, but also their reproductive success. © 2014 Springer-Verlag Berlin Heidelberg.

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@ARTICLE { LeclercDussaultSt-Laurent2014,
    AUTHOR = { Leclerc, M. and Dussault, C. and St-Laurent, M.-H. },
    TITLE = { Behavioural strategies towards human disturbances explain individual performance in woodland caribou },
    JOURNAL = { Oecologia },
    YEAR = { 2014 },
    VOLUME = { 176 },
    PAGES = { 297-306 },
    NUMBER = { 1 },
    NOTE = { cited By 1 },
    ABSTRACT = { Behavioural strategies may have important fitness, ecological and evolutionary consequences. In woodland caribou, human disturbances are associated with higher predation risk. Between 2004 and 2011, we investigated if habitat selection strategies of female caribou towards disturbances influenced their calf's survival in managed boreal forest with varying intensities of human disturbances. Calf survival was 53 % and 43 % after 30 and 90 days following birth, respectively, and 52 % of calves that died were killed by black bear. The probability that a female lose its calf to predation was not influenced by habitat composition of her annual home range, but decreased with an increase in proportion of open lichen woodland within her calving home range. At the local scale, females that did not lose their calf displayed stronger avoidance of high road density areas than females that lost their calf to predation. Further, females that lost their calf to predation and that had a low proportion of ≤5-year-old cutovers within their calving home range were mostly observed in areas where these young cutovers were locally absent. Also, females that lost their calf to predation and that had a high proportion of ≤5-year-old cutovers within their calving home range were mostly observed in areas with a high local density of ≤5-year-old cutovers. Our study demonstrates that we have to account for human-induced disturbances at both local and regional scales in order to further enhance effective caribou management plans. We demonstrate that disturbances not only impact spatial distribution of individuals, but also their reproductive success. © 2014 Springer-Verlag Berlin Heidelberg. },
    AUTHOR_KEYWORDS = { Anthropogenic disturbances; Calf survival; Functional response; Habitat selection; Reproductive success },
    CODEN = { OECOB },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s00442-014-3012-9 },
    ISSN = { 00298549 },
    KEYWORDS = { anthropogenic effect; behavioral response; deer; evolutionarily stable strategy; home range; lichen; predation risk; regional pattern; woodland, Rangifer tarandus; Rangifer tarandus caribou; Ursus americanus, animal; animal behavior; article; bear; Canada; ecosystem; environmental protection; female; geographic information system; human; methodology; physiology; population dynamics; predation; proportional hazards model; reindeer; tree, Animals; Behavior, Animal; Conservation of Natural Resources; Ecosystem; Female; Geographic Information Systems; Homing Behavior; Humans; Population Dynamics; Predatory Behavior; Proportional Hazards Models; Quebec; Reindeer; Trees; Ursidae },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84906270639&partnerID=40&md5=debfed3bf2073666091b89dc778c3df4 },
}

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