animal population
Post on 19-Jun-2015
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DynamicsAnimal Population
Population DynamicsA branch of life sciences that studies
short-term and long-term changes in the size and age composition of populations
Five Basic Components
BirthDeathGender RatioAge StructureDispersal
That affect population changes
Birth RateThe number of individuals being born
FactorsAmount and quality of food
Age at first reproduction
The birth interval
Average number of young born in pregnancy
That affect birth rate
Gender RatioIs the proportion of males to females within a population
Dispersal
The movement of an animal from the location of its birth to a new area where it lives and reproduces
ModelsdNdt
= rN
Simplest model where resources are unlimited
Nt=Noert
ModelsN(t+1) N(t)
= λ
Growth occurs in discrete time intervals described by the term λ
= er
END
ReferencesWikipedia.orgEnvironmental Engineering,
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