BIO120H1 Lecture Notes - Lecture 18: Fecundity, Evolutionary Ecology, Semelparity And Iteroparity
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BIO120H1 Full Course Notes
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Lecture 18: age-structured populations and life history: breaking a population into age classes, life-table parameters, survivorship and fecundity, life histories: trade-o s, cost of reproduction, semelparity vs. iteroparity, r vs. K strategies: summary statistics we can derive from life tables: life expectancy, reproductive value. Variation in age of reproductive maturity, fecundity, and lifespan. Age-sex pyramid: animation at: https://www12. statcan. gc. ca/censusrecensement/2016/dppd/ pyramid/pyramid. cfm geo1=01&type=1. If mortality is constant with age, get exponential decline (type ii); usually graph lx curves as log plots, where type ii is a straight line. Real shapes more complex: human lx have these elements. Real human data, developed country with good medical care (data from statistics. Real human fecundity data (again, data from statistics canada) Relationships among r0, , r: these parameters indicate the factor by which a population changes during a discrete interval of time, but those intervals are di erent, as you would expect, these parameters can be related mathematically:
