Comparative biogeochemistry-ecosystem-human interactions on dynamic continental margins

• Published in: Journal of Marine Systems
• Main Authors: Levin, L. A., Liu, K. K., Emeis, K.C., Breitburg, D.L., Cloern, James E., Deutsch, C., Giani, M., Goffart, A., Hofmann, E.E., Lachkar, Z., Limburg, K., Liu, S.M., Montes, E., Navqi, W., Ragueneau, Olivier, Rabouille, C., Sarkar, S.-K., Swaney, D.P., Wassman, P., Wishner, K. F.
• Other Authors: Scripps Institution of Oceanography (SIO - UC San Diego), University of California San Diego (UC San Diego), University of California (UC)-University of California (UC), National Central University Taiwan (NCU), Institut für Küstenforschung / Institute of Coastal Research, Helmholtz-Zentrum Geesthacht (GKSS), Smithsonian Environmental Research Center, Smithsonian Institution, US Geological Survey Menlo Park, United States Geological Survey Reston (USGS), School of Oceanography Seattle, University of Washington Seattle, Istituto Nazionale di Oceanografia e di Geofisica Sperimentale (OGS), Université de Liège, Station de Recherche Océanographiques et sous-marines (STARESO ), Center for Coastal Physical Oceanography (CCPO), Old Dominion University Norfolk (ODU), Institute of Biogeochemistry and Pollutant Dynamics ETH Zürich (IBP), Department of Environmental Systems Science ETH Zürich (D-USYS), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich)-Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology Zürich (ETH Zürich), SUNY College of Environmental Science and Forestry (SUNY-ESF), State University of New York (SUNY), Ocean University of China (OUC), College of Marine Science St Petersburg, FL, University of South Florida Tampa (USF), CSIR National Institute of Oceanography India (NIO), Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Océan et Interfaces (OCEANIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), University of Calcutta, Cornell University New York, University of Tromsø (UiT), University of Rhode Island (URI), European Project: 287600,EC:FP7:ENV,FP7-OCEAN-2011,PERSEUS(2012)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2015
• Subjects: North Pacific; ACL; North Atlantic; Eutrophication; Europe; Continental margins; Time series; Coastal biogeochemistry; Climate change; Arctic; Anthropogenic factors; Ecosystem services; [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography; [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry; [SDE.MCG]Environmental Sciences/Global Changes; [SDV.EE.ECO]Life Sciences [q-bio]/Ecology; environment/Ecosystems; Pacific
• Online Access: https://hal.univ-brest.fr/hal-01023100; https://hal.univ-brest.fr/hal-01023100/document; https://hal.univ-brest.fr/hal-01023100/file/fulltext.pdf; https://doi.org/10.1016/j.jmarsys.2014.04.016

International audience The oceans' continental margins face strong and rapid change, forced by a combination of direct human activity, anthropogenic CO2-induced climate change, and natural variability. Stimulated by discussions in Goa, India at the IMBER IMBIZO III, we (1) provide an overview of the drivers of biogeochemical variation and change on margins, (2) compare temporal trends in hydrographic and biogeochemical data across different margins, (3) review ecosystem responses to these changes, (4) highlight the importance of margin time series for detecting and attributing change and (5) examine societal responses to changing margin biogeochemistry and ecosystems. We synthesize information over a wide range of margin settings in order to identify the commonalities and distinctions among continental margin ecosystems. Key drivers of biogeochemical variation include long-term climate cycles, CO2-induced warming, acidification, and deoxygenation, as well as sea level rise, eutrophication, hydrologic and water cycle alteration, changing land use, fishing, and species invasion. Ecosystem responses are complex and impact major margin services. These include primary production, fisheries production, nutrient cycling, shoreline protection, chemical buffering, and biodiversity. Despite regional differences, the societal consequences of these changes are unarguably large and mandate coherent actions to reduce, mitigate and adapt to multiple stressors on continental margins.