B54A:
Beyond Redfield: Elemental Ratios as Tracers and Drivers of Biodiversity and Biogeochemical Function in a Changing Ocean II Posters
B54A:
Beyond Redfield: Elemental Ratios as Tracers and Drivers of Biodiversity and Biogeochemical Function in a Changing Ocean II Posters
Beyond Redfield: Elemental Ratios as Tracers and Drivers of Biodiversity and Biogeochemical Function in a Changing Ocean II Posters
Session ID#: 9583
Session Description:
Microbial life in the ocean contains immense biodiversity, yet its collective activity yields tightly linked, global cycles of key nutrients. Almost 80 years ago, A.C. Redfield discovered that relatively invariant elemental ratios found in marine organisms are intimately entwined with the co-variation of these elements in the ocean. However, recent studies have demonstrated the potential for both large-scale variation in nutrient uptake ratios as well as the influence of nutrient ratios on plankton biodiversity and ocean biogeochemical functioning. These findings have broad implications for the ocean’s ‘biological pump’ that links nutrient and carbon cycling and its role in controlling atmospheric CO2 and thereby Earth’s climate.
This session will bring together observationalists, experimentalists, theoreticians, and modelers from a range of disciplines to understand (1) how biogeochemical stoichiometry can be used to understand the coupling of major elemental cycles, (2) the mechanisms leading to different ratios of nutrients in ocean water or plankton, or (3) the influence of elemental ratios on plankton physiology, biodiversity, and distribution. We invite studies that utilize novel field, culture, theory, and/or modeling approaches to address these questions with the goal of achieving a new synthesis regarding biogeochemical stoichiometry in the ocean and its application to key questions.
Primary Chair: Mark A Altabet, University of Massachusetts Dartmouth, New Bedford, MA, United States
Chairs: James J Elser, Arizona State University, School of Life Sciences, Tempe, AZ, United States, Adam Martiny, University of California, Irvine, Earth System Science, Irvine, CA, United States and Curtis A Deutsch, University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States
Moderators: Adam Martiny, University of California, Irvine, Earth System Science, Irvine, CA, United States and James J Elser, Arizona State University, School of Life Sciences, Tempe, AZ, United States
Student Paper Review Liaisons: Mark A Altabet, Univ Massachusetts Darmouth, New Bedford, MA, United States and Adam Martiny, University of California, Irvine, Earth System Science, Irvine, CA, United States
Index Terms:
1615 Biogeochemical cycles, processes, and modeling [GLOBAL CHANGE]
1635 Oceans [GLOBAL CHANGE]
4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4855 Phytoplankton [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Co-Sponsor(s):
- CT - Chemical Tracers, DOM and Trace Metals
- ME - Marine Ecosystems
- MM - Microbiology and Molecular Biology
- PP - Phytoplankton and Primary Production
Abstracts Submitted to this Session:
Effect of Nitrogen Form and N:P Ratio on Phytoplankton Bloom Formation in Florida Bay, USA: A Mesocosm Study (89860)
Nitrogen Form Impacting Phytoplankton Across Scales in China’s West Lake: from Nitrogen-metabolism to Community Composition (89599)
Relationship between N:P ratios and phytoplankton biomass given by Chlorophyll-a concentration in coastal and estuarine waters of South Florida (93000)
Mechanisms Influencing the Stoichiometry of Phytoplankton Carbon to Phosphorus Uptake in a Shelf Sea from Spring to Fall (91121)
Morphological Dependence of Element Stoichiometry in the H. americanus Exoskeleton (92564)
Beyond the Blue: C:N:P relationships across tidal and seasonal time-scales within a salt-marsh estuary (92481)
Variability in Phytoplankton Morphology and Macromolecular Composition With Nutrient Starvation and The Implications for Oceanic Elemental Stoichiometry (92444)
See more of: Biogeochemistry and Nutrients