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SUMMARY:Climate-change velocity since the Last Glacial Maximum: Implicatio
 ns for modern distributions and communities - Brody Sandel - Aarhus Univer
 sity\, Denmark
DTSTART:20120217T150000Z
DTEND:20120217T160000Z
UID:TALK35527@talks.cam.ac.uk
CONTACT:Oskar Brattstrom
DESCRIPTION:Climate-change velocity describes the rate of movement of clim
 ate conditions over Earth’s surface. It is a function of both the tempor
 al and spatial gradients in climate conditions\; velocities can be high if
  change through time is rapid\, or if local conditions are homogenous. As 
 a measure of climate instability it has several advantages\, including des
 cribing the minimum migration rate required to track changing conditions a
 nd explicitly capturing the buffering effect of topography on climate chan
 ge. Variation in climate stability has long been hypothesized as a possibl
 e driver of large-scale ecological patterns including diversity and range 
 size gradients. We calculated a global map of climate-change velocity sinc
 e the Last Glacial Maximum and used this measure of climate instability to
  address a number of classic hypotheses.\n\nHistorical climate-change velo
 city is related to a wide range of characteristics of modern distributions
  and communities. Some key results include apparent extinctions of small-r
 anged and weakly-dispersing vertebrate species from high-velocity regions\
 , more specialized mutualistic networks in low-velocity regions and an inc
 reased importance of stability where current conditions are wet\, producti
 ve and aseasonal. In general\, climate-change velocity appears to influenc
 e a wide variety of features in the modern distributions of species and st
 ructure of communities. Understanding the role of historical climate insta
 bility improves our understanding of the origin of ecological patterns and
  our ability to predict changes in patterns under anthropogenic warming.
LOCATION:Part II Lecture Theatre\, Department of Zoology
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