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      Impacts of ocean acidification under multiple stressors on typical organisms and ecological processes

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          Abstract

          The oceans are taking up over one million tons of fossil CO 2 per hour, resulting in increased pCO 2 and declining pH, leading to ocean acidification (OA). At the same time, accumulation of CO 2 and other greenhouse gases is causing ocean warming, which enhances stratification with thinned upper mixed layers, exposing planktonic organisms to increasing levels of daytime integrated UV radiation. Ocean warming also reduces dissolved oxygen in seawater, resulting in ocean deoxygenation. All these ocean global changes are impacting marine ecosystems and effects are well documented for each individual driver (pH, oxygen, temperature, UV). However, combined effects are still poorly understood, strongly limiting our ability to project impacts at regional or local levels. Different regions are often exposed (and often adapted) to contrastingly different physical and chemical environmental conditions and organisms, and ecosystems from different parts of the world will be exposed to unique combinations of stressors in the future. Understanding the modulating role of adaptation, species niche and stressors’ interaction is key. This review, being a non-exhaustively explored one, aims to provide an overview on understandings of ecophysiological effects of OA and its combination with covarying drivers, mainly warming, deoxygenation and solar UV radiation. We propose a testable hypothetical model as well as future research perspectives.

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          Author and article information

          Journal
          MLST
          Marine Life Science & Technology
          Springer (China )
          2096-6490
          2662-1746
          01 August 2020
          24 June 2020
          : 2
          : 3
          : 279-291
          Affiliations
          1State Key Laboratory of Marine Environmental Science and College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China
          2International Research Center for Marine Biosciences at Shanghai Ocean University, Ministry of Science and Technology, Shanghai 201306, China
          3Department of Biological and Environmental Sciences (BioEnv), University of Gothenburg, The Sven Lovén Centre for Marine Infrastructure - Kristineberg, 45178 Fiskebäckskil, Sweden
          Author notes
          *Corresponding author: Kunshan Gao, E-mail: ksgao@ 123456xmu.edu.cn
          Article
          s42995-020-00048-w
          10.1007/s42995-020-00048-w
          © 2020 Ocean University of China
          Product
          Self URI (journal-page): https://www.springer.com/journal/42995
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