#extinction rate

Biogeography

What affects the extinction rate according to MacArthur-Wilson theory?

“Size of island” for what affects the extinction rate according to macarthur-wilson theory. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. At equilibrium, species identities can continue to turn over even when richness is approximately stable. The model predicts a balance of rates, not an absence of colonization or extinction. The remaining alternatives—“Temperature”, “Predation rate”, “Evolution rate”—refer to different states, processes, or scales and therefore do not express the same causal re

Ref: Biogeography, Lomolino et al., 5th Ed., Ch. 1-4

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Biogeography

Why is the initial extinction rate low in newly colonized islands?

“Low competition and abundant resources” for why is the initial extinction rate low in newly colonized islands. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Larger islands usually support more habitats and larger populations, lowering extinction risk; less isolated islands receive colonists more readily and may experience rescue effects. These mechanisms also apply to habitat fragments that function as ecological islands. The remaining alternatives—“High competition”, “Limited resources”, “High

Ref: Biogeography, Lomolino et al., 5th Ed., Ch. 1-4

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Biogeography

The equilibrium number of species on an island is a balance between:

“Colonization and extinction” for the equilibrium number of species on an island is a balance between. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. At equilibrium, species identities can continue to turn over even when richness is approximately stable. The model predicts a balance of rates, not an absence of colonization or extinction. The remaining alternatives—“Immigration and reproduction”, “Competition and predation”, “Mutation and genetic drift”—refer to different states, processes, or sca

Ref: Biogeography, Lomolino et al., 5th Ed., Ch. 1-4

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Biogeography

According to Island Biogeography Theory, what influences extinction rate significantly?

“Island area” for according to island biogeography theory, what influences extinction rate significantly. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. At equilibrium, species identities can continue to turn over even when richness is approximately stable. The model predicts a balance of rates, not an absence of colonization or extinction. The remaining alternatives—“Island color”, “Island altitude”, “Island shape”—refer to different states, processes, or scales and therefore do not express the

Ref: Biogeography, Lomolino et al., 5th Ed., Ch. 1-4

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