BIOA02H3 Lecture : Population Ecology (Lecture Notes)

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7 Apr 2011
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BIOA02H3 Full Course Notes
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population: all the individuals of a species in an area. population structure: age distribution of individuals, and how they spread over the environment. demographic events: births, deaths, emigration, immigration: these events create population dynamicsstudy of demography. Individuals are often tagged and marked marking recapture method: tracking devicescomputer chips that are embedded in an animal for real time results (heartbeat, temperature, etc. , molecular markersreflect the latitude and longitude of migrated areas, hydrogen levels, etc. measuring population density: counting every individual in a population is often not possible, statistical methods. Life history: how an individual allocates its time and energy among various activities throughout its life, and how it effects is life. all populations have the potential for explosive growth. exponential growth: constant rate, but exponential growth occurs, rmax intrinsic rate of increase (rate of population growth under optimal conditionremoves in-check factor, environmental limits cause birth and death (poverty, etc. )

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