OB41A:
Effect of Warming on Biological, Ecological, and Biogeochemical Ocean Processes: Responses from Organismal to Ecosystem Scales I

Session ID#: 93120

Session Description:
Global warming is one of the greatest threats to humankind and it has been suggested that marine organisms are more vulnerable to warming than terrestrial organisms. Understanding how enzymatic, genetic and physiological characteristics of individual organisms change in response to increasing mean temperature and temperature fluctuations and how these individual responses scale up to the community, ecosystem and eventually global biogeochemical cycles is a challenging scientific task. Important knowledge gaps exist at all these different scales. At the molecular level, for example, how are the activity and three-dimensional structure of key enzymes such as RubisCO affected by temperature? At the individual level, what are the general patterns of thermal reaction norms and how do they differ between species and habitats? How do species composition, coexistence, and diversity change as temperature changes, particularly with increasing temperature variability? Will these ecological responses translate into changes in biochemical fluxes like global photosynthesis, metabolism and carbon export, which will in turn cause feedbacks to Earth’s climate?  This session welcomes empirical and modelling studies at all these different scales and will act as a platform to comprehensively understand warming effects from organismal physiology to ecosystem processes in a dynamic and changing ocean.
Co-Sponsor(s):
  • CP - Coastal and Estuarine Processes
  • ME - Marine Ecology and Biodiversity
  • PC - Past, Present and Future Climate
Index Terms:

4813 Ecological prediction [OCEANOGRAPHY: BIOLOGICAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL]
4817 Food webs, structure, and dynamics [OCEANOGRAPHY: BIOLOGICAL]
4858 Population dynamics and ecology [OCEANOGRAPHY: BIOLOGICAL]
Primary Chair:  Susanne Menden-Deuer, University of Rhode Island, Graduate School of Oceanography, Narragansett, United States
Co-chairs:  Hongbin Liu, HKUST, Kowloon, Hong Kong and Gabriel Yvon-Durocher, University of Exeter, Exeter, United Kingdom
Primary Liaison:  Bingzhang Chen, University of Strathclyde, Department of Mathematics and Statistics, Glasgow, United Kingdom
Moderators:  Susanne Menden-Deuer, University of Rhode Island, Graduate School of Oceanography, Narragansett, United States and Bingzhang Chen, University of Strathclyde, Department of Mathematics and Statistics, Glasgow, United Kingdom
Student Paper Review Liaisons:  Gabriel Yvon-Durocher, University of Exeter, Exeter, United Kingdom and Bingzhang Chen, University of Strathclyde, Department of Mathematics and Statistics, Glasgow, United Kingdom

Abstracts Submitted to this Session:

Effects of plankton temperature dependence in ocean biogeochemical models (642975)
Friederike Prowe, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany and Iris Kriest, GEOMAR, Kiel, Germany
Trait variance leads to the spurious higher temperature sensitivity of heterotrophs than autotrophs (638945)
Bingzhang Chen, University of Strathclyde, Department of Mathematics and Statistics, Glasgow, United Kingdom, David Montagnes, University of Liverpool, School of Biological Sciences, Liverpool, United Kingdom, Qing Wang, Jinan University, Department of Ecology, Guangzhou, China and Susanne Menden-Deuer, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
Hitting a moving target: Microbial evolutionary strategies in a warming ocean (642480)
Naomi Marcil Levine1, Nathan gerard Walworth2, Emily Zakem1, John P Dunne3 and Sinead Collins4, (1)University of Southern California, Los Angeles, CA, United States, (2)University of Southern California, (3)NOAA Geophys Fluid Dynamic, Princeton, United States, (4)University of Edinburgh, Edinburgh, United Kingdom
Do mixotrophs modulate a positive climate feedback loop? Modeling the evolutionary response of mixotrophs to future ocean conditions (642457)
Holly Moeller1, Michelle Lepori-Bui1 and Charlotte Laufkötter2,3, (1)University of California Santa Barbara, Ecology, Evolution & Marine Biology, Santa Barbara, CA, United States, (2)University of Bern, Bern, Switzerland, (3)University of Bern, Zürich, Switzerland
Warming promotes bacterial and phytoplankton growth and grazing rates in a Mediterranean coastal lagoon: an in situ mesocosm experiment (652124)
Justine Courboulès1, Behzad Mostajir2, Sebastien Mas3 and Francesca Vidussi2, (1)MARBEC (Marine Biodiversity, Exploitation and Conservation), CNRS, University of Montpellier, Ifremer, IRD, Montpellier, France, Paris Cedex 16, France, (2)MARBEC (Marine Biodiversity, Exploitation and Conservation), CNRS, University of Montpellier, Ifremer, IRD, Montpellier, France, Montpellier, France, (3)MEDIMEER (Mediterranean platform for Marine Ecosystems Experimental Research), Observatoire de Recherche Méditerranéen de l’Environnement, CNRS, University of Montpellier, IRD, IRSTEA, Sète, France, Sète, France
Coastal bacterioplankton communities show resilience to climate change under varying nutrient regimes (649027)
Fenella Deans1, Clifford Stephen Law2, Sergio Morales1 and Federico Baltar3, (1)University of Otago, Dunedin, New Zealand, (2)National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand, (3)University of Vienna, Dept. of Limnology and Bio-Oceanography, Vienna, Austria
Biological response of phytoplankton community structure after warm-water anomalies conditions and its implications on Mexican Pacific coastal waters. (645148)
Mary Carmen Ruiz-de la Torre1, Josue Villegas-Mendoza2, Ludwinka Mendez-González3, Judith León-López4 and Briana López-Calderón2, (1)Autonomous University of Baja California, Marine Science Faculty, Mexicali, BJ, Mexico, (2)Autonomous University of Baja California, Marine Science Faculty, Ensenada, BJ, Mexico, (3)Autonomous University of Baja California, Coastal Oceanography program, Mexicali, BJ, Mexico, (4)Autonomous University of Baja California, Coastal Oceanography program, Ensenada, BJ, Mexico