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Full-Text Articles in Behavior and Ethology
Decline And Recovery Of A High Arctic Wolf-Prey System, L. David Mech
Decline And Recovery Of A High Arctic Wolf-Prey System, L. David Mech
USGS Northern Prairie Wildlife Research Center
A long-existing system of wolves (Canis lupus), muskoxen (Ovibos moschatus), and arctic hares (Lepus arcticus) in a 2600 km2 area of Canada’s High Arctic (80° N latitude) began collapsing in 1997 because of unusual adverse summer weather but recovered to a level at which all three species were reproducing by 2004. Recovery of wolf presence and reproduction appeared to be more dependent on muskox increase than on hare increase.
Un vieux système biologique composé de loups (Canis lupus), de boeufs musqués (Ovibos moschatus) et de lièvres arctiques (Lepus …
Lack Of Reproduction In Muskoxen And Arctic Hares Caused By Early Winter?, L. David Mech
Lack Of Reproduction In Muskoxen And Arctic Hares Caused By Early Winter?, L. David Mech
USGS Northern Prairie Wildlife Research Center
A lack of young muskoxen (Ovibos moschatus) and arctic hares (Lepus arcticus) in the Eureka area of Ellesmere Island, Northwest Territories (now Nunavut), Canada, was observed during summer 1998, in contrast to most other years since 1986. Evidence of malnourished muskoxen was also found. Early winter weather and a consequent 50% reduction of the 1997 summer replenishment period appeared to be the most likely cause, giving rise to a new hypothesis about conditions that might cause adverse demographic effects in arctic herbivores.
Durant l’été 1998, et ce, à la différence de la plupart des années depuis …