Ocean acidification due to increasing atmospheric carbon dioxide
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Ocean acidification due to increasing atmospheric carbon dioxide Contents Page Summary vi 1 Introduction 1 1.1 Background to the report 1 1.2 The oceans and carbon dioxide: acidification 1 1.3 Acidification and the surface oceans 2 1.4 Ocean life and acidification 2 1.5 Interaction with the Earth systems 2 1.6 Adaptation to and mitigation of ocean acidification 2 1.7 Artificial deep ocean storage of carbon dioxide 3 1.8 Conduct of the study 3 2 Effects of atmospheric CO 2 enhancement on ocean chemistry 5 2.1 Introduction 5 2.2 The impact of increasing CO 2 on the chemistry of ocean waters 5 2.2.1 The oceans and the carbon cycle 5 2.2.2 The oceans and carbon dioxide 6 2.2.3 The oceans as a carbonate buffer 6 2.3 Natural variation in pH of the oceans 6 2.4 Factors affecting CO 2 uptake by the oceans 7 2.5 How oceans have responded to changes in atmospheric CO 2 in the past 7 2.6 Change in ocean chemistry due to increases in atmospheric CO 2 from human activities 9 2.6.1 Change to the oceans due to CO 2 enhancement in recent centuries 9 2.6.2 How oceanic pH will change in the future 9 2.7 The role of carbon chemistry in ocean systems 10 2.7.1 Effects on calcium carbonate and saturation horizons 10 2.7.2 Impacts of acidification on the chemistry of nutrients and toxins 12 2.8 Conclusions 13 3 Biological impacts: effects of changing ocean chemistry on organisms and populations 15 3.1 Introduction 15 3.2 Effects of ocean acidification on photosynthetic and non-photosynthetic microorganisms 16 3.2.1 Effects on phytoplankton: photosynthetic organisms 16 3.2.2 Effects on non-photosynthetic microorganisms 18 3.3 Effects of ocean acidification on photosynthesis in benthic organisms 18 3.4 Effects of ocean acidification on multicellular animals 19 3.4.
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Ocean acidification due to increasing atmospheric carbon dioxide
Ocean acidification due to increasing atmospheric carbon dioxide Contents Page Summary vi 1 Introduction 1 1.1 Background to the report 1 1.2 The oceans and carbon dioxide: acidification 1 1.3 Acidification and the surface oceans 2 1.4 Ocean life and acidification 2 1.5 Interaction with the Earth systems 2 1.6 Adaptation to and mitigation of ocean acidification 2 1.7 Artificial deep ocean stora...
متن کاملOcean Acidification and Oceanic Carbon Cycling
The concentration of atmospheric CO2 is increasing due to emissions from burning of fossil fuels and changes in land use. Part of this “anthropogenic CO2” invades the oceans causing a decrease of seawater pH; this process is called “ocean acidification.” The lowered pH, but also the concomitant changes in other properties of the carbonate system, affects marine life and the cycling of carbon in...
متن کاملOcean acidification in a geoengineering context
Fundamental changes to marine chemistry are occurring because of increasing carbon dioxide (CO(2)) in the atmosphere. Ocean acidity (H(+) concentration) and bicarbonate ion concentrations are increasing, whereas carbonate ion concentrations are decreasing. There has already been an average pH decrease of 0.1 in the upper ocean, and continued unconstrained carbon emissions would further reduce a...
متن کاملOcean acidification and flux of marine aggregates
Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract The adsorption of anthropogenic atmospheric carbon dioxide (CO 2) by the ocean provokes its acidification. This acidification may alter several oceanic processes, including the export of biogenic carbon ...
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تاریخ انتشار 2005