Ecological Archives E089-004-A3

Anders Forsman, Jonas Ahnesjö, Sofia Caesar, and Magnus Karlsson. 2008. A model of ecological and evolutionary consequences of color polymorphism. Ecology 89:34–40.

Appendix C. A figure showing the influence of color pattern polymorphism on population declines, range contractions, and extinction.

 
 

Evolutionary or ecological event – As a result of…

 

Scenario 1

Temporary declines in population size and evolutionary changes in morph frequencies – modifications of selective regimes and relative fitness of alternative morphs imposed by temporal environmental change

Scenario 2

Population declines, range contraction and local extinction – higher susceptibility of monomorphic parts of the population to temporal environmental change

Scenario 3

Population declines, range contraction (or population subdivision) – susceptibility to temporal environmental change, differential selection and drift

 

Local extinction of monomorphic subpopulations – susceptibility to environmental change and demographic and genetic stochasticity

Scenario 4

Population decline, range contraction and extinction – high susceptibility of monomorphic population to temporal environmental change, differential selection, in combination with drift and demographic and genetic stochasticity

 

   FIG. C1. Graphical model of the influence of color pattern polymorphism on population declines, range contractions, and extinction. White, gray, and black represent three different color morphs. Evolutionary dynamics such as extinctions are indicated along the vertical time axis and should be read from top to bottom. Geographic range contractions are indicated along the horizontal space axis.



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