PC12A:
Assessing Ecosystem Variability from Paleoceanographic Archives I


Session ID#: 9343

Session Description:
The assessment of climate-change impacts on marine ecosystems is currently significantly hampered by the lack of a sufficient number of long-term observations. Marine sedimentary archives provide a unique opportunity to obtain information on the magnitude of ecosystem variability, trends, changes of biogeographic ranges, and the extinction and emergence of species. Moreover, the analysis of ecosystem variability on longer timescales can inform about the response to known climate forcings as well as, for example, on the existence and occurrence to thresholds in ecosystems. Over the past years, progress in the development of proxies informing on key aspects of marine ecosystems as well as in obtaining high-resolution sedimentary sequences has opened new opportunities in marine-based paleo-ecosystem research. We invite contributions from all areas of paleo-ecosystem research, covering high-resolution reconstructions, proxy development, and modeling studies.
Primary Chair:  Michael Schulz, University of Bremen, Bremen, Germany; MARUM - Center for Marine Environmental Sciences, Univ. Bremen, Bremen, Germany
Chairs:  Michal Kucera, MARUM - University of Bremen, Bremen, Germany and Fatima F G Abrantes, Instituto Port Mar e Atmosfera, Lisbon, Portugal
Moderators:  Michael Schulz, University of Bremen, Bremen, Germany, Michal Kucera, MARUM - University of Bremen, Bremen, Germany and Fatima F G Abrantes, Instituto Português do Mar e da Atmosfera, Lisboa, Portugal
Student Paper Review Liaison:  Michal Kucera, MARUM - University of Bremen, Bremen, Germany
Index Terms:

1630 Impacts of global change [GLOBAL CHANGE]
4924 Geochemical tracers [PALEOCEANOGRAPHY]
4944 Micropaleontology [PALEOCEANOGRAPHY]
4950 Paleoecology [PALEOCEANOGRAPHY]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients
  • MG - Marine Geology & Sedimentology
  • PP - Phytoplankton and Primary Production

Abstracts Submitted to this Session:

PC12A-01
Rates and patterns of plankton response to stress exposure under natural conditions (92389)
Michal Kucera and Manuel Weinkauf, MARUM - University of Bremen, Bremen, Germany
PC12A-02
High-resolution Records of Proteinaceous Deep-Sea Coral δ13C and δ15N Values in the North Pacific Subtropical Gyre Suggest Major Shifts in Nutrient and Phytoplankton Dynamics over the last 5000 years (90444)
Danielle S Glynn1, Matthew D. McCarthy1, Kelton McMahon2 and Thomas P Guilderson3,4, (1)University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States, (2)University of California Santa Cruz, Institute of Marine Sciences, Santa Cruz, CA, United States, (3)Lawrence Livermore National Laboratory, Livermore, CA, United States, (4)University of California Santa Cruz, Santa Cruz, CA, United States
PC14A-2047
Disentangling synergistic climate drivers on the evolution of two species of planktonic foraminifera on regional and global scales (89576)
Anieke Brombacher1, Paul A Wilson1, Ian Bailey2 and Thomas H.G. Ezard1, (1)National Oceanography Centre, Southampton, United Kingdom, (2)University of Exeter, Exeter, EX4, United Kingdom
PC12A-04
A modeling approach to investigate the sensitivity of plankton phenology to global change since the Last Glacial Maximum (88606)
Kerstin Kretschmer, Michal Kucera and Michael Schulz, MARUM – Center for Marine Environmental Sciences and Faculty of Geosciences, University of Bremen, Bremen, Germany
PC12A-05
Modern and Interglacial Marine Ostracode Species Diversity Patterns off Eastern North America (91649)
Wing Tung Ruby Chiu1, Moriaki Yasuhara1, Thomas M Cronin2, Gene Hunt3 and Laura Gemery4, (1)University of Hong Kong, Hong Kong, Hong Kong, (2)U.S. Geological Survey, Florence Bascom Geoscience Center, Reston, VA, United States, (3)Smithsonian Institution, National Museum of Natural History, Washington, DC, United States, (4)USGS Headquarters, Reston, VA, United States
PC12A-06
Millenial-scale Plankton Regime Shifts In The Subtropical North Pacific Assessed By δ13C And δ15N Compound-specific Stable Isotope Analysis Of Deep-sea Corals (93002)
Kelton McMahon, Institute of Marine Sciences, University of California Santa Cruz, Santa Cruz, CA, United States, Thomas P Guilderson, Lawrence Livermore National Laboratory, Livermore, CA, United States; Lawrence Livermore National Laboratory, Center for Accelerator Mass Spectrometry, Livermore, CA, United States, Matthew D. McCarthy, University of California Santa Cruz, Ocean Sciences Department, Santa Cruz, CA, United States, Owen Sherwood, University of Colorado at Boulder, Institute of Arctic and Alpine Research, Boulder, CO, United States, Thomas Larsen, Christian-Albrechts-Universität zu Kiel, Leibniz-Laboratory for Radiometric Dating and Stable Isotope Research, Kiel, Germany and Branwen Williams, Claremont Colleges, W. M. Keck Science Department, Claremont, CA, United States
PC12A-07
Past climates primary productivity changes in the Indian Ocean (90824)
Priscilla Karine Le Mézo1, Masa Kageyama2, Laurent Bopp2, Luc Beaufort3, Pascale Braconnot2 and Franck C Bassinot4, (1)ICTA - Institut de Ciencia i Tecnologia Ambientals, Cerdanyola del Valles - Barcelona, Spain, (2)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette Cedex, France, (3)CEREGE-CNRS-Aix Marseille Univ., Aix-en-Provence, France, (4)LSCE Laboratoire des Sciences du Climat et de l'Environnement, Gif-Sur-Yvette, France
PC12A-08
Stable pelagic vertebrate community structure through extreme Paleogene greenhouse conditions (88958)
Elizabeth C Sibert, University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, Matt Friedman, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, Pincelli M Hull, Yale University, Department of Geology and Geophysics, New Haven, CT, United States, Gene Hunt, Smithsonian Institution, National Museum of Natural History, Washington, DC, United States and Richard D Norris, Scripps Institution of Oceanography, La Jolla, CA, United States
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