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NUITFRANCE - Bibliothèque - Fiche bibliographique
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Document " Contrasting Activity Patterns of Sympatric and Allopatric Black and Grizzly Bears "
Type de document : |
Articles de revue scientifique |
Thème du document : |
Nuit naturelle - Rythmes biologiques |
Groupe biologique : |
Mammifères hors humains et chauves-souris |
Auteur(s) : |
SCHWARTZ C.C. CAIN S.L. PODRUZNY S. CHERRY S. FRATTAROLI L.
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Date de publication : |
Novembre 2010 |
Langue : |
English/Anglais |
Nom du périodique : |
Journal of Wildlife Management |
Précisions : |
Volume 74. Numéro 8. Pages 1628–1638 |
Lien contenu/source : |
http://onlinelibrary.wiley.com/doi/10.2193/2009-57... |
DOI : |
10.2193/2009-571 |
Mots-clefs : |
Activity budget American black bear Brown bear Encounters Global Positioning System (GPS) Intra-guild predation National park Ursus americanus Ursus arctos
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Citation courte : |
Schwartz et al. (2010) |
Citation complète (format NuitFrance) : |
SCHWARTZ C.C., CAIN S.L., PODRUZNY S., CHERRY S. & FRATTAROLI L. (2010). Contrasting Activity Patterns of Sympatric and Allopatric Black and Grizzly Bears. Journal of Wildlife Management. Volume 74. Numéro 8. Pages 1628–1638. |
Résumé du document : |
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The distribution of grizzly (Ursus arctos) and American black bears (U. americanus) overlaps in western North America. Few studies have detailed activity patterns where the species are sympatric and no studies contrasted patterns where populations are both sympatric and allopatric. We contrasted activity patterns for sympatric black and grizzly bears and for black bears allopatric to grizzly bears, how human influences altered patterns, and rates of grizzly-black bear predation. Activity patterns differed between black bear populations, with those sympatric to grizzly bears more day-active. Activity patterns of black bears allopatric with grizzly bears were similar to those of female grizzly bears; both were crepuscular and day-active. Male grizzly bears were crepuscular and night-active. Both species were more night-active and less day-active when =<1 km from roads or developments. In our sympatric study area, 2 of 4 black bear mortalities were due to grizzly bear predation. Our results suggested patterns of activity that allowed for intra- and inter-species avoidance. National park management often results in convergence of locally high human densities in quality bear habitat. Our data provide additional understanding into how bears alter their activity patterns in response to other bears and humans and should help park managers minimize undesirable bear-human encounters when considering needs for temporal and spatial management of humans and human developments in bear habitats.
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Saisie sur NuitFrance par : |
Rosor |
Saisie sur NuitFrance en : |
Novembre 2014 |
Identifiant NuitFrance : |
NF-BIBLI-152 |
Permalien de la fiche NuitFrance : |
http://www.nuitfrance.fr/?page=donneesdoc&partie=fiche-bibliographique&id_doc=152 |
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