Forestry 42, 88–94 (1944)Īldous, S.E., Smith, C.F.: Food habits of Minnesota deer as determined by stomach analysis. 17, 175–176 (1936)Īldous, C.M., Aldous, S.E.: The snowshoe hare-a serious enemy of forest plantations. New York: Academic Press 1974Īldous, C.M.: Food habits of Lepus americanus phaenotus. Fire is itself a meteorological phenomenon, although complexly related to simple weather variables.Īhlgren, C.E.: Effects of fires on temperate forests: North Central United States. Fire clearly appear to be a periodic phenomenon, not-withstanding the difficulty of showing periodicity in simple weather time series. On this evidence, the snowshoe hare-Canada lynx cycle seems likely to be a forced oscillation rather than a predator-prey, parasitehost, or herbivore-vegetation limit cycle, as proposed by several authors. I conclude that Grange's (1949, 1965) hypothesis that fire and plant succession drive the snowshoe hare cycle deserves serious consideration, as do Butler's (1962) and Watt's (1968, 1973) suggestions that precipitation may drive or decisively modify furbearer ‘cycles’. Snowfall is also correlated with the lynx cycle and tends to account for the variation not accounted for by fires. Fires set in motion plant succession, potentially leading to an increase in snowshoe hares (Grange, 1965). This paper shows that there is a reasonable coincidence between the Canada lynx cycle and the occurrence of forest and brush fires.
