ME44A:
Plankton Grazing and Selectivity in Marine Food Webs Posters


Session ID#: 9555

Session Description:
Grazing by heterotrophic plankton is a key process that mediates the flow of energy and material through planktonic food webs, yet is poorly parameterized in many food web and biogeochemical models. Various methods have been used to measure grazing empirically, including prey removal experiments, gut content studies, and biochemical analyses, each with its own advantages and challenges. Additionally, many studies use bulk relationships between grazers and prey to describe and measure grazing, and as such, we still often have rather course resolution for parameterizing complex food web models. Yet it is widely accepted that marine planktonic grazers are highly selective, and the mechano- and chemosensory mechanisms of that selective behavior are not well understood or constrained. This session seeks to bring together a wide array of research on planktonic grazing and the selectivity of grazers, in an effort to explore broad questions of the role of grazers in structuring food webs and communities. Our goal is a varied set of presentations on a variety of aspects of grazing to gain insight into the impacts of this process on our understanding of marine ecosystem dynamics. We welcome presentations from any work related to grazing, including experiments, observations, or modeling.
Primary Chair:  James J Pierson, University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States
Chairs:  M. Brady Olson, Western Washington University, Shannon Point Marine Center, Anacortes, WA, United States and James J Pierson, University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States
Moderators:  James J Pierson, University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States and M. Brady Olson, Western Washington University, Shannon Point Marine Center, Anacortes, WA, United States
Student Paper Review Liaison:  James J Pierson, University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States
Index Terms:

4255 Numerical modeling [OCEANOGRAPHY: GENERAL]
4815 Ecosystems, structure, dynamics, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4817 Food webs, structure, and dynamics [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4890 Zooplankton [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
  • B - Biogeochemistry and Nutrients
  • MM - Microbiology and Molecular Biology
  • PP - Phytoplankton and Primary Production

Abstracts Submitted to this Session:

 
ME44A-0832
PCR-Based Assessment of Freshwater Zooplankton Feeding on Edible and “Inedible” Prey In Situ. (Invited) (92730)
Jens Christian Nejstgaard, Maria Belyaeva, Silke Van den Wyngaert, Stella Angela Berger, Hans-Peter Grossart and Peter Kasprzak, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Dep. 3, Experimental Limnology, Stechlin/OT Neuglobsow, Germany
 
ME44A-0833
Patterns of phytoplankton diversity and mortality due to grazing across trophic gradients in the Southern California Current (92400)
Alexandra Freibott, University of California, San Diego, Scripps Institution of Oceanography, Ahmed Moustafa, The American University in Cairo, Ariel Rabines, J. Craig Venter Institute, San Diego, CA, United States, Andrew E Allen, University of California, San Diego / J Craig Venter Institute, Scripps Institution of Oceanography, La Jolla, CA, United States and Michael R Landry, Scripps Institution of Oceanography, La Jolla, CA, United States
 
ME44A-0834
Differential response of marine flagellate communities to prokaryotic food quality (92851)
Daniele De Corte1, Gabriela Fabiola Paredes Rojas2, Eva Sintes1 and Gerhard J Herndl1,3, (1)University of Vienna, Department of Limnology and Bio-Oceanography, Vienna, Austria, (2)University of Vienna, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, Vienna, Austria, (3)Department of Biological Oceanography, Royal Netherlands Institute for Sea Research, Austria
 
ME44A-0835
The diatom-produced polyunsaturated aldehydes can induce trophic cascades in the planktonic food web in productive coastal waters. (92792)
Gayantonia Franzè1, Diane Stoecker2, James J Pierson2 and Peter Lavrentyev1, (1)University of Akron, Akron, OH, United States, (2)University of Maryland Center for Environmental Science, Horn Point Laboratory, Cambridge, MD, United States
 
ME44A-0836
The Influence of Nutrient Availability on Trophic Energy Transfer Using Two-Stage Continuous Cultures (89754)
Kelsey Ann McBeain and Kimberly Halsey, Oregon State University, Microbiology, Corvallis, OR, United States
 
ME44A-0837
Estimating half-saturation constants of microzooplankton grazing in the sea (88453)
Bingzhang Chen, Japan Agency for Marine-Earth Science and Technology, RCGC, Yokohama, Japan and Edward A. Laws, Louisiana State University, School of the Coast & Environment, Baton Rouge, LA, United States
 
ME44A-0838
Doing More with Less? Toward Increasing the Resolution of Protistan Grazing-rate Measurements. (89861)
Françoise Morison, University of Rhode Island, Oceanography, Narragansett, RI, United States and Susanne Menden-Deuer, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
 
ME44A-0839
Linking Movement to Feeding Behavior in Gyrodinium spirale: Does Prey Type Matter? (88330)
Sean Anderson and Susanne Menden-Deuer, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
 
ME44A-0840
Microzooplankton abundance, composition and trophic interactions with phytoplankton and pelagic copepods in the ice-covered and open waters of the Eastern Fram Strait. (92698)
Peter Lavrentyev1, Gayantonia Franzè1, Camilla Svensen2 and Franciso B Moore1, (1)University of Akron, Akron, OH, United States, (2)Uit the Arctic university of Norway, Department of Arctic and Marine Biology, Tromsø, Norway
 
ME44A-0841
When May Feeding Rates Cover Metabolic Expenses of Planktonic Nauplii? (89602)
Gustav-Adolf Paffenhofer, Skidaway Institute Oceanography, Savannah, GA, United States and Marion Koester, University of Greifswald, Institute of Microbiology - Microbial Ecology, Greifswald, Germany
 
ME44A-0842
Behaviour-dependent Predation Risk in Marine Planktonic Copepods: an Experimental and Modelling Approach (91127)
Rodrigo Almeda, Hans van Someren Gréve and Thomas Kiørboe, Technical University of Denmark, National Institute for Aquatic Resources, DTU Aqua, Charlottenlund, Denmark
 
ME44A-0844
Effect of ocean acidification on the nutritional quality of phytoplankton for copepod reproduction (90484)
Morgan Meyers1, William P Cochlan2, Wim Kimmerer2 and Edward J Carpenter2, (1)San Francisco State University - Romberg Tiburon Center, Biology, Tiburon, CA, United States, (2)San Francisco State University - Romberg Tiburon Center, Tiburon, CA, United States
 
ME44A-0845
Spatial and temporal variation in mesozooplankton grazing across the California Current Ecosystem (88103)
Jennifer Anne Brandon, Scripps Institution of Oceanography, UCSD, La Jolla, CA, United States and Mark D Ohman, University of California San Diego, La Jolla, CA, United States
 
ME44A-0846
Molecular Quantification of Zooplankton Gut Content: The Case For qPCR (88075)
Marc Emil Frischer, University of Georgia, Skidaway Institute of Oceanography, Savannah, GA, United States, Tina L Walters, University of Georgia Skidaway Institute of Oceanography, Savannah, GA, United States, Deidre Michelle Gibson, Hampton University, Marine and Environmental Science, Hampton, VA, United States, Jens Christian Nejstgaard, Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Dep. 3, Experimental Limnology, Stechlin/OT Neuglobsow, Germany and Christofer Troedsson, Uni Research Environment, Molecular Ecology, Bergen, Norway
 
ME44A-0847
The Development and Application of a Molecular Assay to Detect In situ Predation of the Pelagic Tunicate, Dolioletta gegenbauri in the South Atlantic Bight (Continental Shelf, USA). (92405)
LaGina Frazier1,2, Tina L Walters2, Deidre Michelle Gibson3 and Marc Emil Frischer4, (1)Savannah State University, Savannah, GA, United States, (2)University of Georgia Skidaway Institute of Oceanography, Savannah, GA, United States, (3)Hampton University, Marine and Environmental Science, Hampton, VA, United States, (4)University of Georgia, Skidaway Institute of Oceanography, Savannah, GA, United States
 
ME44A-0848
Molecular Gut Content Profiling to Investigate the In Situ Grazing and Selectivity of Dolioletta gegenbauri in Summer Continental Shelf Intrusion Waters of the South Atlantic Bight, USA (92329)
Tina L Walters1,2, LaGina Frazier1,2, Deidre Michelle Gibson3, Gustav Adolf Paffenhofer4 and Marc Emil Frischer4, (1)University of Georgia Skidaway Institute of Oceanography, Savannah, GA, United States, (2)Savannah State University, Savannah, GA, United States, (3)Hampton University, Marine and Environmental Science, Hampton, VA, United States, (4)University of Georgia, Skidaway Institute of Oceanography, Savannah, GA, United States
See more of: Marine Ecosystems