Lecture10PopGrowth1

Lecture10PopGrowth1 - compare multiple species Age...

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Ecology and Evolution Chapter 11 Population Growth And Regulation
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Outline Population Growth Demography Density Independent Discrete Continuous Age Structure Life Tables Cohort Static Survivorship Curves Limits on Population Growth Logistic Growth (Density Dependent) Return Exams
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Happy Valentine’s Day!! What happened on Oct 31, 2011? What happened on Oct 12, 1999? >200,000 Births Today <100,000 Deaths Today Have Fun Tonight…but not too much fun!
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Human Population Growth Demography—the study of the structure and growth of populations Population size or density (BIDE) Birth rate, immigration, death rate, emigration N ~(B+I)-(D+E)
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Population Growth Population Growth Rate-- Density Independent Models Discrete Growth—discrete generations with discrete reproductive bouts
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Population Growth Continuous Growth—overlapping generations with year round reproduction r versus λ dN/dT = rN r is the slope of curve Plot log scale to
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Unformatted text preview: compare multiple species Age Structure Proportion of individuals in each age class Useful when birth and death rates vary by age Stable Age Distribution Age Structures Reflect effect of population growth in stable versus growing populations Age Structure Germany Life Tables Summary of survival and fecundity Model population growth and dynamics Additions or Removals from populations Females only (males irrelevant in life tableshard to prove paternity) x = age intervalarbitrary, but should be consistent s x = survivalsurvival from age class x to x+1 l x = survivorshipsurvival to age x Cohort vs Static life tables Classic Life Table Study Dall Sheep In Denali NP, Alaska Olaus Murie1930s Survivorship Curves Describe pattern of survival in populations Generally follow 1 of 3 basic patterns Type I, II, or III...
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Lecture10PopGrowth1 - compare multiple species Age...

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