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Persistence in Metapopulations. Single Deme: Year t to (t + 1)

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Presentation on theme: "Persistence in Metapopulations. Single Deme: Year t to (t + 1)"— Presentation transcript:

1 Persistence in Metapopulations

2 Single Deme: Year t to (t + 1)

3 q Annual Extinction Probability

4

5 Two Demes: Year t to (t + 1) Time t: Demes a and b Occupation numbers: x a = 1, x b = 1 Both demes extant Annual Extinction Probability = q Demes independent wrt extinction

6 Two Demes, Annual Extinction Pr = q

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8 Colonization-Extinction Equilibrium

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10

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12 Persistence Text 4.2 Manage Endangered Frog Population 1 Deme, 100 Individuals Pr[Annual Extinction] = q = 0.1 3 Demes, 33 Individuals/Deme Pr[Deme, Annual Extinction] = q = 0.5 Greater Annual Persistence?

13 Persistence

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