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BIOLOGICAL CONNECTIONS WITH THE WEST ANTARCTIC ICE SHEET (WAIS)

BIOLOGICAL CONNECTIONS WITH THE WEST ANTARCTIC ICE SHEET (WAIS). LIFE ON THE ROCKS. Paul Arthur Berkman, Ph.D. Bren School of Environmental Science and Management University of California, Santa Barbara. SYSTEMS DYNAMICS ARE ALL A MATTER OF PERSPECTIVE.

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BIOLOGICAL CONNECTIONS WITH THE WEST ANTARCTIC ICE SHEET (WAIS)

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  1. BIOLOGICAL CONNECTIONS WITH THE WEST ANTARCTIC ICE SHEET (WAIS) LIFE ON THE ROCKS Paul Arthur Berkman, Ph.D. Bren School of Environmental Science and Management University of California, Santa Barbara

  2. SYSTEMS DYNAMICS ARE ALL A MATTER OF PERSPECTIVE

  3. CLIMATE AROUND ANTARCTICA SINCE THE AGE OF DINOSAURS OCEAN THERMOMETRY FROM ANIMALS (albeit single-celled blobs of protoplasm in shells) From: Berkman (2002). Science into Policy: Global Lessons from Antarctica. Academic Press.

  4. MICROPALEONTOLOGY FROM PLANTS TOO Pleistocene collapse of the West Antarctic Ice Sheet suggested by diatoms from under Ice Stream B, which indicate open-water conditions in the past Scherer, et al. 1998. Science 281: 82-85.

  5. CLIMATE, BIOGEOGRAPHY AND ECOSYSTEM DEVELOPMENT Expansion, zonation and circumpolar dynamics of the Antarctic ecosystem revealed by species distributions over time and space

  6. PLIO-PLEISOTCENE THRESHOLD OF SEA-ICE EXTENT AROUND ANTARCTICA SCALLOPS Adamussium from Explorers Cove, Taylor Valley Chlamys from Prospect Mesa, Wright Valley • Cenozoic scallops (Chlamys) associated with high-energy coastal environments went extinct around Antarctica and appeared in lower latitudes at the end of the Pliocene • From: Berkman et al. Deep-Sea Research (in press). • Deep-sea scallops (Adamussium) associated with low-energy environments emerged as the sole scallop in Antarctic coastal environments from the Pleistocene to the present

  7. MID-HOLOCENE ENVIRONMENTAL TRANSITION IN THE ROSS SEA REGION Emerged-Beach Mollusc Fossils Ice-Core Geochemistry Sediment-Core Diatoms Penguin- Rookery Colonization Steig et al. (1998) Ann. Glaciol. 27:305-310. Berkman et al. (in press).

  8. HOLOCENE SEA-ICE VARIABILITY ALONG THE VICTORIA LAND COAST From Emslie et al. (2003). Mar. Ecol. Prog. Ser. 262:19-25.

  9. ANTARCTIC SCALLOP Adamussium colbecki • Century longevity of scallops determined from decadal recapture of tagged scallops • Intra- and inter-annual records of coastal environmental variability preserved in scallop shells From: Berkman et al. (in press)

  10. VICTORIA LAND LATITUDINAL GRADIENT RESEARCH PROGRAM INCREASING ARIDITY ICE SHELF MULTI-YEAR SEA-ICE ANNUALLY OPEN WATER Berkman, P.A. and Everett, L.R. (eds.) 2001. Byrd Polar Research Center Report No. 20.

  11. RESEARCH ON THE DYNAMICS OF THE WEST ANTARCTIC ICE SHEET AND THE EARTH SYSTEM IS AN INTERDISCIPLINARY EXERCISE THANKS TO BOB BINDSCHADLER FOR HIS EXCELLENT STEWARDSHIP OF THE WAIS PROGRAM OVER THE LAST DECADE

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