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PS. My last response wasn’t meant for the whole network — sorry! In response to Rick and Steve … IMHO, the complex life cycles in the marine realm have to expose marine populations to more risk with changing climate — we could illustrate that with a toy model. I think this is a key point, which is obvious in some ways but not really talked about. Then, in turn, maybe there are some more complex evolutionary processes/responses in marine organisms which “protect” the population and make it that they are no more susceptible to environmental change. But what are they? What would work? If a population had to adapt for each life stage, then the evolutionary options for marine organisms would be much less than for terrestrial organisms (my simple thinking is that if there is P likelihood of evolving a successful population for a simple life cycle, then there is P^3 likelihood of doing so for a 3-stage life cycle … and of course P << 1). On Nov 2, 2019, at 7:52 AM, Rick Grosberg <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hi everyone…. Just to add my two cents, I completely agree that Steve’s proposition is the scale and kind of question that should be the starting point. But I wanted to add one other dimension to it, and that is, why and how is this challenge different in marine systems than it is in terrestrial and freshwater systems? As one example, beyond the physical differences in the media, far more organisms in marine systems have complex life cycles in which there are multiple opportunities for phenological mismatches. Does this increase the scope for climate change to disrupt life cycles, and require more complex evolutionary responses? Just something I’m thinking about on a Saturday morning here on the west coast, now that we’ve managed to getthrough another fire at Bodega Marine Lab. Rick Rick Grosberg Distinguished Professor Director, Coastal & Marine Sciences Institute Department of Evolution & Ecology College of Biological Sciences University of California, Davis Davis, CA 95616 USA [log in to unmask]<mailto:[log in to unmask]> http://www.eve.ucdavis.edu/grosberg/ ________________________________ To unsubscribe from the RCN-ECS list, click the following link: https://listserv.neu.edu/cgi-bin/wa?TICKET=NzM3Mzk1IGpsYXJnaWVyQFVDREFWSVMuRURVIFJDTi1FQ1MgIM6x5gKT6HeT&c=SIGNOFF //\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\ John L. Largier Professor of Oceanography - Department of Environmental Science and Policy Associate Director - Coastal & Marine Sciences Institute University of California, Davis Bodega Marine Laboratory, P.O.Box 247, Bodega Bay, CA 94923, Office phone (707) 875-1930; Mobile phone (707) 479-0063 Coastal Oceanography Group bml.ucdavis.edu/research/faculty/john-largier/<http://bml.ucdavis.edu/research/faculty/john-largier/> //\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\//\\ ######################################################################## To unsubscribe from the RCN-ECS list, click the following link: https://listserv.neu.edu/cgi-bin/wa?SUBED1=RCN-ECS