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Conservation at Population and Species Level

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(1)

Conservation at Population

and Species Level

(2)

• No population is infinite. Changing climatic conditions, succession,

some diseases and some rare events increase the risk of extinction for every population.

(3)

• The best protection plan for threaten species must cover some characteristics;

• The protection area should be as large as possible • Habitat should be at high quality

(4)

Minimum Viable Population (MVP)

• The minimum number of individuals that was sufficient to sustain

(5)

Factors that cause decrease in population numbers and local

extinction on small populations;

• Genetic drift

• Random changes in birth and death rates that cause population fluctuations

• Increase in number of predators, competiton, outbreaks, food shortage, natural disasters

(6)

• Factors that define effective population size

Effective population size is the population size that is

calculated according to the number of reproductive

individuals

• Change in number of new borns • Unequality in sex ratios

(7)

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