Wolf functional response and regulation of moose in the Yukon

Autor:	A S Harestad, R D Hayes
Rok vydání:	2000
Předmět:	education.field_of_study Systemic lupus erythematosus biology Ecology Population Functional response biology.organism_classification medicine.disease Population density Predation Canis medicine Population growth Animal Science and Zoology education Ecology Evolution Behavior and Systematics
Zdroj:	Canadian Journal of Zoology. 78:60-66
ISSN:	1480-3283 0008-4301
DOI:	10.1139/z99-188
Popis:	We studied kill rates by wolves (Canis lupus) on a rapidly growing moose population in the east-central Yukon. We added these data to the cumulative functional response curve obtained in other North American wolf studies. Our kill rates are higher than those predicted at low moose densities. The kill rate increases rapidly, reaching 2.4 moose per wolf per 100 days at 0.26 moose/km2 and remains constant at this level. No data are available below 0.2 moose/km2 to indicate the shape of the ascending curve. Based on moose distribution and the low prey-switching ability of wolves, we suggest that the functional response curve is of type II. Our wolf predation rate model predicts that moose are held to a low density equilibrium between 0.07 and 0.12/km2, slightly below densities observed in interior Alaska and the Yukon.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6d8cb05c0e61c6a9cca82fe80a88633 https://doi.org/10.1139/z99-188 Zobrazit plný text záznamu