11th International Symposium on Antarctic Earth Sciences, Edinburgh, United Kingdom, 10 to 15 July 2011:
We invite you to participate in a session on
19. Origin and evolution of the modern Antarctic biota
The evolutionary origins of today’s Antarctic biodiversity remain elusive. New molecular evidence combined with palaeontological data suggests that some stem group taxa may be as old as Late Cretaceous, or even older, and of lower latitude origin. Some crown groups may be younger, but still as old as Palaeogene. These findings prompt renewed discussion as to the precise causes and timings of major polar radiations. Some Antarctic biota appear to have expanded well before the onset of global cooling and subsequently developed evolutionary strategies for surviving the intense polar cold.
Another important question is how both marine and terrestrial organisms in Antarctica were able to survive the multiple glacial cycles of the Neogene and Quaternary. The presence of glacial refugia has been widely inferred from biological data, even though today most of Antarctica’s ice-free areas are inhospitable for much of the biota. In addition, past ice sheet thickness and extent reconstructed from geological data and ice-sheet models seem to be irreconcilable with the presence of multiple refugia and extensive regionalisation within Antarctica. Thus, integration of both theoretical and empirical biological, geological and glaciological data is timely and pressing.
The aim of this session is to bring together a broad cross-section of earth and life scientists, who will address the evolutionary origins, subsequent radiation and survival of the modern Antarctic flora and fauna. Contributions from scientists working on any groups of Antarctic organisms in both marine and terrestrial environments will be welcome. In addition to the more traditional approaches of biogeography and palaeobiology, contributions from molecular phylogenetics, macrophysiology and other biological disciplines are invited. In a truly interdisciplinary session, these studies will be compared to the onshore and offshore work of geologists and geomorphologists and to the recent findings of ice-sheet modellers.
Confirmed keynote speakers for this session are Allan Ashworth (North Dakota State University, U.S.A.), Rob DeConto (University of Massachusetts Amherst, U.S.A.) and Andy Clarke (University of East Anglia/British Antarctic Survey, UK).
We are looking into the possibility that presenters will have the opportunity to publish their session contributions in a special issue of an ISI journal.
The deadline for registration is the 8th of July 2011 (early registration: 31st of March 2011), and the deadline for submission of abstracts is the 31st of March 2011.
To register please follow this link:
To submit your abstract please follow this link:
General information about the 11th International Symposium on Antarctic Earth Sciences is found at:
Apologies for any cross-posting.
We look forward to seeing you in Edinburgh!
Pete Convey ([hidden email])
Alistair Crame ([hidden email])
Claus-Dieter Hillenbrand ([hidden email])
Dominic A. Hodgson ([hidden email])
Louise Newman ([hidden email])
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