[LTER-mcm-pi] more food for thought

[Byron Adams]

Quick answer is yes. The temp changes other stuff too, which also leads to different niches (I.e biotic interactions).  Question is what genetic variation is there for selection to act on it. If it's there, the organisms can respond as fast as the selection is strong. First change will be in community composition, followed by selection and subsequent adaptation, followed by subsequent shifts in community until the environment stabilises again. What works against this is that the lakes presumably have been stable for so long that stabilising selection should have removed a lot of the variation within populations of each species. Great, testable hypotheses.
B

- sent from my ice phone -


On Sep 22, 2015, at 5:43 PM, Priscu, John <jpriscu at montana.edu<mailto:jpriscu at montana.edu>> wrote:

Byron-this one is for you,

Do you think that the changes in lake temperatures we are measuring are causing new fundamental niches for phytoplankton?
<Irwin et al. phytoplanton niches PNAS2015.pdf>
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