Unsecured attractants, collisions, and high mortality strain coexistence between grizzly bears and people in the Elk Valley , southeast British Columbia
Rattachement africain : ca, bd, us, Guinée-Bissau. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract Historical persecution of grizzly bears in North America reduced the species range by 55%. Today, dedicated recovery efforts and shifting societal perceptions have supported the recovery and expansion of grizzly bear populations in many areas. With increasing overlap between people and bears, conservation actions and scientific inquiry are now shifting efforts toward supporting coexistence with bears. Here, we assessed the demography and behavior of grizzly bears in a coexistence landscape in southeast British Columbia, Canada, where abundant grizzly bear populations occur among busy, human‐settled valleys. Between 2016 and 2022, we captured 76 individual grizzly bears and monitored their conflict behavior, survival, and reproduction for 160 animal‐years. The cause of death for 14 animals with a functioning collar was human–wildlife conflict ( n = 6), road or rail collision ( n = 6), unknown but human suspected ( n = 1), and natural ( n = 1). Subadult survival was the lowest recorded in North America, while adult survival was similar to other studies, suggesting an intense demographic filter for young animals. We estimate that human‐caused mortality is underreported in government databases by 65%, or for every recorded mortality, there are ~2 that go unreported. Reporting was especially low for road and rail mortalities. Grizzly bear mortality in the Elk Valley due to collisions and conflicts with people is an order of magnitude greater than elsewhere in British Columbia. Combining DNA‐ and collar‐based estimates of population growth, we show that grizzly bear abundance is stable due to source‐sink dynamics, whereby ~7 immigrant bears per year offset the high mortality rates in the area. Grizzly bears dispersing into the valley are often young and more conflict‐naïve, creating a conflict spiral that can be interrupted by reducing mortality of young animals. Creating a self‐sustaining population of bears in the Elk Valley that is not reliant on immigration will require targeted efforts to reduce or secure attractants on private property and strategies to minimize collisions with trains and vehicles.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé, mais le titre doit être comparé manuellement.
- Titre Crossref
- Unsecured attractants, collisions, and high mortality strain coexistence between grizzly bears and people in the <scp>Elk Valley</scp> , southeast <scp>British Columbia</scp>
- Date Crossref
- 27/09/2023
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Ministry of Forests pays non établi dans la noticeOrganisme public
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University of British Columbia Department of Earth pays non établi dans la noticeUniversité ou école supérieure
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Kelowna General Hospital pays non établi dans la noticeÉtablissement de santé
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Okanagan University College pays non établi dans la noticeUniversité ou école supérieure
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International Union for Conservation of Nature (Bangladesh) pays non établi dans la noticeOrganisation à but non lucratif
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International Union for Conservation of Nature (United States) pays non établi dans la noticeOrganisation à but non lucratif
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International Union for Conservation of Nature (Guinea-Bissau) Bissau, Guinée-Bissau (code pays fourni par la source)Organisation à but non lucratif
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Wildlife Science Center Biodiversity Pathways Ltd. Kelowna British Columbia Canada Wildlife Science Center pays non établi dans la noticeEntreprise
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International Union for the Conservation of Nature pays non établi dans la noticeInstitution
Ministry of Forests, Department of Earth — University of British Columbia et Kelowna General Hospital, avec 6 autres affiliations. Pays d’affiliation : Guinée-Bissau.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.