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pop size & genetic differentiation

Up to Week 6: Null models in landscape genetics

pop size & genetic differentiation

Posted by Niko Balkenhol at March 16. 2009

Hi Rolf,


 


You might already point it out, but effective population size can also influence neutral genetic differentiation, not just neutral genetic diversity.  (In fact: Are you explaining the difference between diversity and structure, or is someone else?)  I feel that’s often overlooked in current studies…we mostly focus on the landscape in-between samples, but location-specific factors can also influence gene flow (e.g., density-dependent dispersal, reproduction and survival).  Thus, if we have populations of varying sizes/densities, we might expect certain genetic structures, even if gene flow is not influence by space or the matrix.  (And this might actually tie in niceley with the net-work approaches discussed by Melanie in lecture 9.)


 


Looks great otherwise!



 

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