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Teri M Population Ecology

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Teri Mitton

on 27 April 2012

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Transcript of Teri M Population Ecology

Characteristics of Populations
Population Ecology
Basic Terms
Pop. Density
Pop. Dispersion
Demography
Measuring Density
Counts in representative plots
Estimates based on indirect indicators
Mark-recapture method
N = (# marked) X (total catch the second time)
number of marked recaptures
Patterns of Dispersion
Clumped patterns
Uniform patterns
Random patterns
Age structure
Birth Rate (fecundity)
Death Rate
Generation time
Sex ratio
Life Tables and survivorship curves
Types I, II, and III
Life History Diveristy
Big-bang reproduction or Semelparity
Iteroparity or repeated reproduction
"Trade Offs" and Life Histories
Time
Energy
Nutrients
Growth Models
Exponential Growth
Logistic Growth
Factors effecting populations
Density Independent
Density Dependent
Competition for resources
Territoriality
Health
Predation
Toxic wastes
Intrinsic Factors
Demographics
Climate
Disease
Full transcript