Biology 1001A Lecture Notes - Logistic Function, Parasitism, Doubling Time
7 Dec 2012
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Lec 21: population ecology 2 read text sections 45. 3-45. 5: age structure and population growth, life tables and survivorship curves, life history strategies, models of population growth. Characteristics of populations can affect population growth rates. Age structure valuable to know because knowing the proportion of individuals that. Are young or can reproduce tells us how fast the population has been growing in the past/ the potential for reproductive success . We can tell what is going to happen to the population in the future, Left (zero growth)- the population in not growing- there are enough prereproductive individuals to eventually replace the reproductive individuals. Middle (negative population growth)- more individuals dying the being added by new births. Then calculate the age specific mortality rate/ survivorship rate. Used by insurance companies to adjust their premiums. Plots the porportion of individuals alive at the beginning of the cohort with the percentage of life span.
