BIOL 121 Lecture Notes - Lecture 31: Survivorship Curve, Life Table, Fecundity
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BIOL 121 Full Course Notes
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Biol 121 lecture 31 population ecology. A population is all the members of a particular species that can potentially interbreed, occupying a given area at a given time. Demography the study of how factors such as immigration, emigration, births and deaths determine the size and structure of populations through time. P(t2) = p(t1) + b d + i e. Survivorship how many individuals survive each generation. Fecundity how many individuals are born female offspring produced per female. A life table summarizes the probability that an individual will survive and reproduce in any given year over its entire lifetime. An organism"s life history consists of how the organism allocates its resources to growth, reproduction and activities related to survival. High fecundity organisms: spiders, weeds, fish (salmon, insects. High survivorship organisms: whales, elephants, humans. Organisms with a balance between survivorship and fecundity: rodents, birds, reptiles, equal chance of predation throughout lifetime.
