OB025
Respiration in the Mesopelagic Ocean: Reconciling ecological, biogeochemical and model estimates

Session ID#: 255453

Session Description:
Respiration in the mesopelagic zone determines the long-term storage of carbon in the ocean, the extent of deoxygenation and the level of remineralised carbon dioxide returned to the atmosphere. Yet, mesopelagic respiration remains one of the least constrained metabolic rates in the Earth System, with mismatches between inverse model predictions, in-situ budgets and direct observations of at least an order of magnitude. Our ability to predict how ocean carbon storage will change in the future is limited by our lack of understanding of how respiration varies in time and space, how it is apportioned between free living and particle attached microbes, and between trophic groups such as prokaryotes and zooplankton and how sensitive it is to climate change-induced shifts in temperature, dissolved oxygen and the availability and quality of organic carbon.

Recently, the development of novel technologies such as in situ incubation chambers and profiling floats and new modelling and data analysis techniques have enabled new measurements of mesopelagic respiration over a wider range of space and time scales. This session will bring together experts in observation, experimentation, technology, data analyses and modelling in order to constrain uncertainties in the magnitude of mesopelagic respiration and thus ocean carbon storage.

Co-Sponsor(s):
  • Climate and Ocean Change -
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4806 Carbon cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4840 Microbiology and microbial ecology [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4894 Instruments, sensors, and techniques [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
Student/Early Career Chair:  Chie Amano, University of Vienna, Department of Functional and Evolutionary Ecology, Vienna, Austria
Primary Chair:  Carol Robinson, University of East Anglia, Norwich, United Kingdom
Co-chairs:  Iris Kriest, GEOMAR, Kiel, Germany and Isabel Seguro, University of East Anglia, Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, Norwich, United Kingdom
 
RedoxSensor Green-Based Single-Cell Respiration by Deep-Ocean Prokaryotes across the North Atlantic Latitudinal Gradient (1927026)
Chie Amano1, Marilena Heitger2, Thomas Reinthaler2, Carol Robinson3 and Gerhard Herndl2, (1)University of Vienna, Department of Functional and Evolutionary Ecology, Vienna, Austria, (2)University of Vienna, Vienna, Austria, (3)University of East Anglia, Norwich, United Kingdom
 
Respiration rates in the global mesopelagic ocean (1947716)
Markel Gomez-Letona, Organic Geochemistry Lab, Instituto de Investigacións Mariñas, CSIC, Vigo, Spain and Xosé Antón Álvarez Salgado, Organic Geochemistry Lab, CSIC Institute of Marine Research, Vigo, Spain
 
Seasonal Variability in Surface to Mesopelagic Community Respiration Rates along the TEAL-SHIPS Gulf Stream Transect (2005563)
Melanie Cohn1, Scott Michael Gifford2, Christian Briseño-Avena3, Matthew Bues3, Winifred Johnson4, Sarah Kopczynski4, Ryan Paerl5, Jess Shearer3, Sutara H Suanda6, Devon Umstead4, Rachel L Wood7 and Bradley B Tolar3, (1)University of North Carolina Wilmington, Center for Marine Science, Wilmington, United States, (2)University of North Carolina at Chapel Hill, Earth, Marine and Environmental Sciences, Chapel Hill, United States, (3)University of North Carolina at Wilmington, Biology and Marine Biology, Wilmington, United States, (4)University of North Carolina at Wilmington, Chemistry and Biochemistry, Wilmington, United States, (5)North Carolina State University, Marine, Earth, and Atmospheric Sciences, Raleigh, United States, (6)University of North Carolina at Wilmington, Physics and Physical Oceanography, Wilmington, United States, (7)North Carolina State University Raleigh, Marine, Earth, and Atmospheric Sciences, Raleigh, United States
 
Regional Variability of Mesopelagic Microbial Respiration (2017027)
Nauzet Hernández, María F. Montero, Yeray Santana-Falcón and Javier Aristegui, Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
 
Factors Determining Microbial Respiration, a Key Process in Ocean Carbon Storage (2019297)
Carol Robinson1, Isabel Seguro2, Giorgio Dall'Olmo3, Gwenaelle Moncoiffe4, Qin Wang2 and MarieFanny Racault5, (1)University of East Anglia, Norwich, United Kingdom, (2)University of East Anglia, Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, Norwich, United Kingdom, (3)National Institute of Oceanography and Applied Geophysics (OGS), Trieste, Italy, (4)National Oceanography Center, BODC, Liverpool, United Kingdom, (5)University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom
 
Parameterising Mesopelagic Respiration Estimated from Biogeochemical-Argo Floats (2020536)
Giorgio Dall'Olmo1, Isabel Seguro2, Carol Robinson3, Iris Kriest4 and Gianpiero Cossarini1, (1)National Institute of Oceanography and Applied Geophysics (OGS), Trieste, Italy, (2)University of East Anglia, Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, Norwich, United Kingdom, (3)University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom, (4)GEOMAR, Kiel, Germany
 
Mesopelagic carbon fluxes and respiration rates in the Cape Verde Frontal Zone (2024426)
Javier Arístegui Ruiz1, Bieito Fernandez Castro2, Nauzet Hernández3, Isabell Klawonn4, Clara Maria Flintrop5, Markel Gomez-Letona6, María F. Montero3, Jan Taucher7, Rainer Kiko7, Morten H. Iversen8 and Xosé Antón Álvarez Salgado9, (1)Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Telde, Spain, (2)University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom, (3)Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain, (4)Department of Biological Oceanography, Leibniz Institute for Baltic Research, Warnemünde (IOW), Rostock, Germany, (5)University of Jerusalem, Jerusalem, Israel, (6)Organic Geochemistry Lab, Instituto de Investigacións Mariñas, CSIC, Vigo, Spain, (7)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (8)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Polar Biological Oceanography, Bremerhaven, Germany, (9)Organic Geochemistry Lab, CSIC Institute of Marine Research, Vigo, Spain
 
Mesopelagic remineralisation in global biogeochemical ocean models - uncertainties and potential constraints by observations (2027634)
Iris Kriest, GEOMAR, Kiel, Germany, Isabel Seguro, University of East Anglia, Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, Norwich, United Kingdom, Carol Robinson, University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom and MicroRESPIRE Team
 
Microbial Respiration derived from an Enzyme Kinetic Model in Contrasting Oceanic Regimes (2031215)
Meredith Meyer, University of East Anglia, Centre for Ocean and Atmospheric Science; School of Environmental Science, Norwich, United Kingdom, Isabel Seguro, University of East Anglia, Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, Norwich, United Kingdom, Natalia Osma, University of Antofagasta, Antofagasta, Chile, Igor Fernandez-Urruzola, Universidad de Concepcion, Millennium Institute of Oceanography, Concepción, Chile, Marta Maria Cecchetto, University of East Anglia, Norwich, United Kingdom and Carol Robinson, University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom
 
Mesopelagic respiration in the Northeast Atlantic: integrating multiple methods across a continuum of organic matter pool sizes (2037461)
Christian Tamburini, Aix Marseille Univ. Université de Toulon, CNRS,IRD,MIO UM110, Mediterranean institut of oceanography, Marseille, France, Louis Petiteau, Laboratorie d'oceanographie de Villefranche (CNRS/UPMC), Villefranche, France; Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, UMR 7093 LOV, Villefranche-sur-Mer, France, Villefranche-sur-Mer, France, Pauline LE Coq, Aix Marseille Univ, Université de Toulon, CNRS, IRD, MIO, Marseille, France, Marseille, France, Dominique Lefevre, Mediterranean Institute of Oceanography, Aix Marseille University, Université de Toulon, CNRS, IRD, Marseille, France, Simon Ramondenc, Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, UMR 7093 LOV, Villefranche-sur-Mer, France, Carl Gojak, CNRS, Division Technique de l’INSU, La Seyne sur Mer, France, La Seyne sur Mer, France, Javier Arístegui Ruiz, Instituto de Oceanografía y Cambio Global (IOCAG), Universidad de Las Palmas de Gran Canaria, Telde, Spain, Morten H. Iversen, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Polar Biological Oceanography, Bremerhaven, Germany, Matthieu Bressac, Sorbonne Université, CNRS, Laboratoire d'Océanographie de Villefranche, Villefranche-sur-Mer, France and and the APERO science team
See more of: Ocean Biology and Biogeochemistry
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