Vansina, however, notes that precolonial societies had high birth and death rates, leading to a great deal of natural population fluctuation over time.
22.
According to a study, the population fluctuation of the Asian swallowtail butterfly has been surprisingly stable compared to that of various other insects.
23.
Population fluctuations from one year to the next aren't especially worrisome because they could be caused by temporary weather conditions such as drought.
24.
The loss of this diversity is thought to be due to the several population fluctuations of the Tasmanian devils that have occurred in the last several decades.
25.
Most of the research on the long-haired rat has been conducted during times of massive population fluctuations and therefore little is known about their biology in a non-eruptive period.
26.
Indeed, by creating a patchy system that facilitated prey dispersal over predator dispersal, Huffaker was able to achieve a predator prey system which underwent three cycles of population fluctuation.
27.
However, it is a particularly nomadic bird, and because population fluctuations in its prey species can force it to relocate, it has been known to breed at more southerly latitudes.
28.
In winter, women were asked to leave for their parents'residences in the suburbs of Edo and return only after the fire season had passed, resulting in a seasonal population fluctuation.
29.
Any fluctuations in food supply ( either positive, for example, due to technology improvements, or negative, due to droughts and pest invasions ) tend to translate directly into population fluctuations.
30.
:The lemming article says quite clearly ( in the " Population fluctuations " section ) that lemming suicide behaviour is a myth, propogated by the Disney film " White Wilderness ".
