TY - JOUR
T1 - Strat́gies de conservation et de contrôle du loup (Canis lupus) en Europe occidentale basées sur des modèles démographiques
AU - Chapron, Guillaume
AU - Legendre, Stéphane
AU - Ferrière, Régis
AU - Clobert, Jean
AU - Haight, Robert G.
N1 - Funding Information:
This study was funded in part by the French ‘Ministère de l’Éducation nationale, de la Recherche et des Technologies', ‘Action concertée incitative Jeunes chercheurs 2001’ awarded to Regis Ferrière, and by the European Research Training Network ModLife (Modern Life-History Theory and its Application to the Management of Natural Resources), funded through the Human Potential Programme of the European Commission (Contract HPRN-CT-2000-00051). We thank C. Bessa-Gomes (University Paris-6), L. Boitani (University of Rome), U. Breitenmoser (KORA), B. Lequette (P.N. Mercantour), P. Migot (ONCFS), F. Moutou (AFSSA Alfort), O. Robinet (DNP–MATE), V. Vignon (OGE) and J.-M. Weber (KORA) for advice during this research. We also thank two anonymous referees for constructive comments.
PY - 2003/6/1
Y1 - 2003/6/1
N2 - Securing the long-term acceptance of large carnivores such as the wolf (Canis lupus) in Europe and North America raises a difficult challenge to conservation biologists: planning removals to reduce depredations on livestock while ensuring population viability. We use stochastic-stage-structured population models to investigate wolf population dynamics and to assess alternative management strategies. Among the various management strategies advocated by agencies, zoning that involves eliminating wolves outside a restricted area should be designed with caution, because probabilities of extinction are extremely sensitive to the maximum number of packs that a zone can support and to slight changes in stage specific survival probabilities. In a zoned population, viability is enhanced more by decreasing mortality rates in all classes than by increasing wolf zone size. An alternative to zoning is adaptive management, where there is no limit on pack number but population control can be operated whenever some predefined demographic conditions are met. It turns out that an adaptive management strategy that removes a moderate percentage (10%) of the population following each year of more than 5% of total population growth would provide visible actions addressing public concerns while keeping extinction probability low.
AB - Securing the long-term acceptance of large carnivores such as the wolf (Canis lupus) in Europe and North America raises a difficult challenge to conservation biologists: planning removals to reduce depredations on livestock while ensuring population viability. We use stochastic-stage-structured population models to investigate wolf population dynamics and to assess alternative management strategies. Among the various management strategies advocated by agencies, zoning that involves eliminating wolves outside a restricted area should be designed with caution, because probabilities of extinction are extremely sensitive to the maximum number of packs that a zone can support and to slight changes in stage specific survival probabilities. In a zoned population, viability is enhanced more by decreasing mortality rates in all classes than by increasing wolf zone size. An alternative to zoning is adaptive management, where there is no limit on pack number but population control can be operated whenever some predefined demographic conditions are met. It turns out that an adaptive management strategy that removes a moderate percentage (10%) of the population following each year of more than 5% of total population growth would provide visible actions addressing public concerns while keeping extinction probability low.
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U2 - 10.1016/S1631-0691(03)00148-3
DO - 10.1016/S1631-0691(03)00148-3
M3 - Article
C2 - 14558477
AN - SCOPUS:0141606091
SN - 1631-0691
VL - 326
SP - 575
EP - 587
JO - Comptes Rendus - Biologies
JF - Comptes Rendus - Biologies
IS - 6
ER -