Articles | Volume 12, issue 5
https://doi.org/10.5194/bg-12-1561-2015
https://doi.org/10.5194/bg-12-1561-2015
Research article
 | 
11 Mar 2015
Research article |  | 11 Mar 2015

Biogeochemical processes and buffering capacity concurrently affect acidification in a seasonally hypoxic coastal marine basin

M. Hagens, C. P. Slomp, F. J. R. Meysman, D. Seitaj, J. Harlay, A. V. Borges, and J. J. Middelburg

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Cited articles

Bannink, B. A., Van der Meulen, J. H. M., and Nienhuis, P. H.: Lake Grevelingen: from an estuary to a saline lake. An introduction, Netherlands J. Sea Res., 18, 179–190, 1984.
Ben-Yaakov, S.: pH buffering of pore water of recent anoxic marine sediments, Limnol. Oceanogr., 18, 86–94, 1973.
Borges, A. V. and Gypens, N.: Carbonate chemistry in the coastal zone responds more strongly to eutrophication than ocean acidification, Limnol. Oceanogr., 55, 346–353, 2010.
Brewer, P. G. and Peltzer, E. T.: Limits to marine life, Science, 324, 347–348, 2009.
Burnett, L. E.: The challenges of living in hypoxic and hypercapnic aquatic environments, Integr. Comp. Biol., 37, 633–640, 1997.
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This study looks at the combined impacts of hypoxia and acidification, two major environmental stressors affecting coastal systems, in a seasonally stratified basin. Here, the surface water experiences less seasonality in pH than the bottom water despite higher process rates. This is due to a substantial reduction in the acid-base buffering capacity of the bottom water as it turns hypoxic in summer. This highlights the crucial role of the buffering capacity as a modulating factor in pH dynamics.
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