BISC 100 Lecture Notes - Lecture 14: Snowshoe Hare, Lemming, Exponential Growth
16 Mar 2020
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Document Summary
What factors cause a mosquito population to explode: just the right amount of precipitation at the right time of year. Too little rain and you won"t have much stagnant water. These bats are active from april october/november: population has decreased due to illness and habitat loss one bat can eat up to 1,200 mosquitos an hour. Population age structure: the age structure of a population is the distribution of individuals in different age-groups. The age structure of a population provides insight into the history of a population"s survival, reproductive success, and how the population relates to environmental factors. Population cycles: some populations of insects, birds, and mammals undergo dramatic fluctuations in density with remarkable regularity. Booms characterized by rapid exponential growth are followed by busts, during which the population falls back to a minimal level. Lemmings, small rodents that live in the tundra, are a striking example.
