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SUMMARY:A three-dimensional approach to community turnover: Pleistocene ex
 tinctions\, abrupt climate change\, and (dis)equilibrium dynamics - Jacque
 lyn Gill\, University of Maine
DTSTART:20160317T130000Z
DTEND:20160317T140000Z
UID:TALK63122@talks.cam.ac.uk
CONTACT:38889
DESCRIPTION:Climate change in the next century is expected to drive disequ
 ilibrium dynamics in biotic communities\, particularly for long-lived spec
 ies such as trees\, that may exhibit lagged responses. In many systems\, w
 e are already beginning to see the fingerprints of historic and ongoing cl
 imate change or other anthropogenic impacts\, and so many communities that
  appear to be in equilibrium may actually be in a transient state. As a re
 sult\, conservation strategies that rely on static restoration or manageme
 nt targets are unlikely to be successful. The paleoecological record may p
 rovide a promising way forward in understanding disequilibrium dynamics\, 
 as the increased spatiotemporal resolution of pollen data now allows us to
  reconstruct vegetation dynamics at sub-centennial scales. Plant associati
 ons without a modern analog are a well-recognized feature of late glacial 
 landscapes\, and their formation has been attributed to no-analog climates
  and the extinction of Pleistocene herbivores. While the establishment of 
 no-analog plant communities took less than a century\, the interval of hig
 h vegetation dissimilarity lasted nearly 1000 years\, providing an opportu
 nity to explore community dynamics in tree assemblages in response to clim
 ate change and megafaunal extinction.
LOCATION:Department of Plant Sciences\, Large Lecture Theatre
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