OuelletFerronSirois1996

Référence

Ouellet, J.-P., Ferron, J. and Sirois, L. (1996) Space and habitat use by the threatened Gaspe caribou in southeastern Quebec. Canadian Journal of Zoology, 74(10):1922-1933. (Scopus )

Résumé

The space and habitat use patterns of the threatened Gaspe caribou (Rangifer tarandus caribou) were documented using telemetry. Between 1987 and 1992, 701 radiolocations were recorded, primarily for adult females (n = 28). Five habitats available to caribou (hardwood, immature, mature fir, mature spruce, alpine) are described and biomass of arboreal lichen, an important winter food source, is estimated. Regardless of sex and age, almost all locations (91%) were recorded within the limits of Gaspe Provincial Park. Home-range size of adult females averaged 148 km<sup>2</sup> (convex polygon); 95% of adult female locations were within 107 km<sup>2</sup> and 50% within 15 km<sup>2</sup> (harmonic mean). Home range sizes were small and did not vary seasonally or annually. Throughout the year caribou were located more frequently than expected at high elevations (>915 m) and less frequently than expected at low elevations (0-685 m). Consequently, alpine habitat was used more frequently than expected. Caribou concentrated their activity in two distinct areas: the alpine plateaus of Mont Albert and Mont Jacques-Cartier. No caribou used both areas (with the exception of a lone female). These two caribou groups should be viewed as two subpopulations. The biomass of arboreal lichens was greatest in mature fir and spruce stands, with 50-60 kg/ha available at a height of 4 m. The altitudinal distribution of this resource may partly explain the strong selection of high-elevation sites made by caribou in winter. Our results also support the hypothesis that cow-calf groups remain at high elevations to reduce the risk of predation by coyotes (Canis latrans) and black bears (Ursus americanus). The proximity of mature forests and alpine habitat, at high elevations, in two areas of the park may explain the small extent of adult female home ranges and the segregation of Gaspe caribou into two groups.

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@ARTICLE { OuelletFerronSirois1996,
    AUTHOR = { Ouellet, J.-P. and Ferron, J. and Sirois, L. },
    TITLE = { Space and habitat use by the threatened Gaspe caribou in southeastern Quebec },
    JOURNAL = { Canadian Journal of Zoology },
    YEAR = { 1996 },
    VOLUME = { 74 },
    PAGES = { 1922-1933 },
    NUMBER = { 10 },
    ABSTRACT = { The space and habitat use patterns of the threatened Gaspe caribou (Rangifer tarandus caribou) were documented using telemetry. Between 1987 and 1992, 701 radiolocations were recorded, primarily for adult females (n = 28). Five habitats available to caribou (hardwood, immature, mature fir, mature spruce, alpine) are described and biomass of arboreal lichen, an important winter food source, is estimated. Regardless of sex and age, almost all locations (91%) were recorded within the limits of Gaspe Provincial Park. Home-range size of adult females averaged 148 km<sup>2</sup> (convex polygon); 95% of adult female locations were within 107 km<sup>2</sup> and 50% within 15 km<sup>2</sup> (harmonic mean). Home range sizes were small and did not vary seasonally or annually. Throughout the year caribou were located more frequently than expected at high elevations (>915 m) and less frequently than expected at low elevations (0-685 m). Consequently, alpine habitat was used more frequently than expected. Caribou concentrated their activity in two distinct areas: the alpine plateaus of Mont Albert and Mont Jacques-Cartier. No caribou used both areas (with the exception of a lone female). These two caribou groups should be viewed as two subpopulations. The biomass of arboreal lichens was greatest in mature fir and spruce stands, with 50-60 kg/ha available at a height of 4 m. The altitudinal distribution of this resource may partly explain the strong selection of high-elevation sites made by caribou in winter. Our results also support the hypothesis that cow-calf groups remain at high elevations to reduce the risk of predation by coyotes (Canis latrans) and black bears (Ursus americanus). The proximity of mature forests and alpine habitat, at high elevations, in two areas of the park may explain the small extent of adult female home ranges and the segregation of Gaspe caribou into two groups. },
    COMMENT = { Cited By (since 1996): 21 Export Date: 10 February 2010 Source: Scopus CODEN: CJZOA },
    ISSN = { 00084301 (ISSN) },
    KEYWORDS = { Gaspe caribou, Canis latrans, Rangifer tarandus caribou, Ursus americanus, black bear, caribou, coyote, habitat use, home range, predation risk, Canada, Quebec, Gaspe Provincial Park, Mont Albert, Canada, Quebec, Gaspe Provincial Park, Mont Jacques-Cartier },
    OWNER = { Luc },
    TIMESTAMP = { 2010.02.10 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-0030302042&partnerID=40&md5=46f189017fc07cd482bc02c665ee0301 },
}

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