Journal ArticleDOI
Acidification of subsurface coastal waters enhanced by eutrophication
Wei-Jun Cai,Xinping Hu,Wei-Jen Huang,Michael C. Murrell,John C. Lehrter,Steven E. Lohrenz,Wen-Chen Chou,Weidong Zhai,James T. Hollibaugh,Yongchen Wang,Pingsan Zhao,Xianghui Guo,Xianghui Guo,Kjell Gundersen,Minhan Dai,Gwo-Ching Gong +15 more
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TLDR
In this article, the authors assess the combined impact of eutrophication and ocean acidification on acidity in the coastal ocean, using data collected in the northern Gulf of Mexico and the East China Sea.Abstract:
Human inputs of nutrients to coastal waters can lead to the excessive production of algae, a process known as eutrophication. Microbial consumption of this organic matter lowers oxygen levels in the water 1‐3 . In addition, the carbon dioxide produced during microbial respiration increases acidity. The dissolution of atmospheric carbon dioxide in ocean waters also raises acidity, a process known as ocean acidification. Here, we assess the combined impact of eutrophication and ocean acidification on acidity in the coastal ocean, using data collected in the northern Gulf of Mexico and the East China Sea—two regions heavily influenced by nutrient‐laden rivers. We show that eutrophication in these waters is associated with the development of hypoxia and the acidification of subsurface waters, as expected. Model simulations, using data collected from the northern Gulf of Mexico, however, suggest that the drop in pH since pre-industrial times is greater than that expected from eutrophication and ocean acidification alone. We attribute the additional drop in pH— of 0.05 units—to a reduction in the ability of these carbon dioxide-rich waters to buffer changes in pH. We suggest that eutrophication could increase the susceptibility of coastalread more
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Book ChapterDOI
Carbon and Other Biogeochemical Cycles
Philippe Ciais,Christopher L. Sabine,Govindasamy Bala,Laurent Bopp,Victor Brovkin,Josep G. Canadell,Abha Chhabra,Ruth DeFries,James N. Galloway,Martin Heimann,Chris D. Jones,C. Le Quéré,Ranga B. Myneni,S. L. Piao,Peter E. Thornton +14 more
TL;DR: For base year 2010, anthropogenic activities created ~210 (190 to 230) TgN of reactive nitrogen Nr from N2 as discussed by the authors, which is at least 2 times larger than the rate of natural terrestrial creation of ~58 Tg N (50 to 100 Tg nr yr−1) (Table 6.9, Section 1a).
Journal ArticleDOI
The changing carbon cycle of the coastal ocean
James E. Bauer,Wei-Jun Cai,Peter A. Raymond,Thomas S. Bianchi,Charles S. Hopkinson,Pierre Regnier +5 more
TL;DR: The sources, exchanges and fates of carbon in the coastal ocean and how anthropogenic activities have altered the carbon cycle are discussed.
Journal ArticleDOI
Contrasting futures for ocean and society from different anthropogenic CO2 emissions scenarios
Jean-Pierre Gattuso,Jean-Pierre Gattuso,Alexandre K. Magnan,Raphaël Billé,William W. L. Cheung,Ella L. Howes,Fortunat Joos,D. Allemand,Laurent Bopp,Sarah R. Cooley,C. M. Eakin,Ove Hoegh-Guldberg,Ryan P. Kelly,Hans-Otto Pörtner,Alex Rogers,John M. Baxter,D. Laffoley,D. Osborn,Aleksandar Rankovic,Julien Rochette,Ussif Rashid Sumaila,Sébastien Treyer,Carol Turley +22 more
TL;DR: The physics, chemistry, and ecology of the oceans might be affected based on two CO2 emission trajectories: one business as usual and one with aggressive reductions, consistent with the Copenhagen Accord of keeping mean global temperature increase below 2°C in the 21st century.
Impacts of 1.5°C Global Warming on Natural and Human Systems
Ove Hoegh-Guldberg,Daniela Jacob,Marco Bindi,Sally Brown,I. A. Camilloni,Arona Diedhiou,Riyanti Djalante,Kristie L. Ebi,Francois Engelbrecht,Joel Guiot,Yasuaki Hijioka,S. Mehrotra,Antony J. Payne,Sonia I. Seneviratne,Adelle Thomas,Rachel Warren,G. Zhou,Sharina Abdul Halim,Michelle Achlatis,Lisa V. Alexander,Myles R. Allen,Peter Berry,Christopher Boyer,Edward Byers,Lorenzo Brilli,Marcos Silveira Buckeridge,William W. L. Cheung,Marlies Craig,Neville Ellis,Jason P. Evans,Hubertus Fischer,Klaus Fraedrich,Sabine Fuss,Anjani Ganase,Jean-Pierre Gattuso,Peter Greve,Tania Guillén Bolaños,Naota Hanasaki,Tomoko Hasegawa,Katie Hayes,Annette L. Hirsch,Chris D. Jones,Thomas Jung,Markku Kanninen,Gerhard Krinner,David M. Lawrence,Timothy M. Lenton,Debora Ley,Diana Liverman,Natalie M. Mahowald,Kathleen L. McInnes,Katrin J. Meissner,Richard J. Millar,Katja Mintenbeck,Daniel M. Mitchell,Alan C. Mix,Dirk Notz,Leonard Nurse,Andrew Emmanuel Okem,Lennart Olsson,Michael Oppenheimer,Shlomit Paz,Juliane Petersen,Jan Petzold,Swantje Preuschmann,Mohammad Feisal Rahman,Joeri Rogelj,Hanna Scheuffele,Carl-Friedrich Schleussner,Daniel Scott,Roland Séférian,Jana Sillmann,Chandni Singh,Raphael Slade,Kimberly Stephenson,Tannecia S. Stephenson,Mouhamadou Bamba Sylla,Mark Tebboth,Petra Tschakert,Robert Vautard,Richard Wartenburger,Michael Wehner,Nora Marie Weyer,Felicia S. Whyte,Gary W. Yohe,Xuebin Zhang,Robert B. Zougmoré +86 more
TL;DR: In this article, the authors present a survey of women's sportswriters in South Africa and Ivory Coast, including: Marco Bindi (Italy), Sally Brown (UK), Ines Camilloni (Argentina), Arona Diedhiou (Ivory Coast/Senegal), Riyanti Djalante (Japan/Indonesia), Kristie L. Ebi (USA), Francois Engelbrecht (South Africa), Joel Guiot (France), Yasuaki Hijioka (Japan), Shagun Mehrotra (USA/India), Ant
Journal ArticleDOI
Is Ocean Acidification an Open-Ocean Syndrome? Understanding Anthropogenic Impacts on Seawater pH
Carlos M. Duarte,Carlos M. Duarte,Iris E. Hendriks,Tommy S. Moore,Ylva S. Olsen,Ylva S. Olsen,Alexandra Steckbauer,Laura Ramajo,Laura Ramajo,Jacob Carstensen,Julie Trotter,Malcolm T. McCulloch +11 more
TL;DR: In this paper, the authors argue that ocean acidification from anthropogenic CO2 emissions is largely an open ocean syndrome and that a concept of anthro- pogenic impacts on marine pH, which is applicable across the entire ocean, from coastal to open-ocean environments, provides a superior framework to consider the multiple components of the anthropogenic perturbation of marine pH trajectories.
References
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Supporting Online Material for Spreading Dead Zones and Consequences for Marine Ecosystems
Robert J. Diaz,Rutger Rosenberg +1 more
TL;DR: The formation of dead zones has been exacerbated by the increase in primary production and consequent worldwide coastal eutrophication fueled by riverine runoff of fertilizers and the burning of fossil fuels as discussed by the authors.
Journal ArticleDOI
Spreading Dead Zones and Consequences for Marine Ecosystems
Robert J. Diaz,Rutger Rosenberg +1 more
TL;DR: Dead zones in the coastal oceans have spread exponentially since the 1960s and have serious consequences for ecosystem functioning, exacerbated by the increase in primary production and consequent worldwide coastal eutrophication fueled by riverine runoff of fertilizers and the burning of fossil fuels.
Journal ArticleDOI
Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms
James C. Orr,Victoria J. Fabry,Olivier Aumont,Laurent Bopp,Scott C. Doney,Richard A. Feely,Anand Gnanadesikan,Nicolas Gruber,Akio Ishida,Fortunat Joos,Robert M. Key,Keith Lindsay,Ernst Maier-Reimer,Richard J. Matear,Patrick Monfray,Anne Mouchet,Raymond G. Najjar,Gian-Kasper Plattner,Keith B. Rodgers,Christopher L. Sabine,Jorge L. Sarmiento,Reiner Schlitzer,Richard D. Slater,I. Totterdell,Marie-France Weirig,Yasuhiro Yamanaka,Andrew Yool +26 more
TL;DR: 13 models of the ocean–carbon cycle are used to assess calcium carbonate saturation under the IS92a ‘business-as-usual’ scenario for future emissions of anthropogenic carbon dioxide and indicate that conditions detrimental to high-latitude ecosystems could develop within decades, not centuries as suggested previously.
Journal ArticleDOI
Impacts of ocean acidification on marine fauna and ecosystem processes
TL;DR: Fabry et al. as discussed by the authors presented new observations, reviewed available data, and identified priorities for future research, based on regions, ecosystems, taxa, and physiological processes believed to be most vulnerable to ocean acidification.
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Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms
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