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Annual Arctic Wolf Pack Size Related To Arctic Hare Numbers, L. David Mech
Annual Arctic Wolf Pack Size Related To Arctic Hare Numbers, L. David Mech
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
During the summers of 2000 through 2006, I counted arctic wolf (Canis lupus arctos) pups and adults in a pack, arctic hares (Lepus arcticus) along a 9 km index route in the area, and muskoxen (Ovibos moschatus) in a 250 km2 part of the area near Eureka (80° N, 86° W), Ellesmere Island, Nunavut, Canada. Adult wolf numbers did not correlate with muskox numbers, but they were positively related (r2 = 0.89; p < 0.01) to an arctic hare index. This is the first report relating wolf numbers to non-ungulate prey.
Pendant les étés 2000 à 2006, j’ai compté les jeunes loups arctiques et les adultes (Canis lupus arctos …
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
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
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 …