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HERO ID
4154627
Reference Type
Journal Article
Title
Redox reactions and weak buffering capacity lead to acidification in the Chesapeake Bay
Author(s)
Cai, WJ; Huang, WJ; Luther, GW; Pierrot, D; Li, M; Testa, J; Xue, M; Joesoef, A; Mann, R; Brodeur, J; Xu, YY; Chen, B; Hussain, N; Waldbusser, GG; Cornwell, J; Kemp, WM
Year
2017
Is Peer Reviewed?
1
Journal
Nature Communications
EISSN:
2041-1723
Volume
8
Issue
1
Page Numbers
Article #369
Language
English
PMID
28848240
DOI
10.1038/s41467-017-00417-7
Web of Science Id
WOS:000408440700006
Relationship(s)
is supplemented by
4154628
: Supplementary materials
Abstract
The combined effects of anthropogenic and biological CO2 inputs may lead to more rapid acidification in coastal waters compared to the open ocean. It is less clear, however, how redox reactions would contribute to acidification. Here we report estuarine acidification dynamics based on oxygen, hydrogen sulfide (H2S), pH, dissolved inorganic carbon and total alkalinity data from the Chesapeake Bay, where anthropogenic nutrient inputs have led to eutrophication, hypoxia and anoxia, and low pH. We show that a pH minimum occurs in mid-depths where acids are generated as a result of H2S oxidation in waters mixed upward from the anoxic depths. Our analyses also suggest a large synergistic effect from river-ocean mixing, global and local atmospheric CO2 uptake, and CO2 and acid production from respiration and other redox reactions. Together they lead to a poor acid buffering capacity, severe acidification and increased carbonate mineral dissolution in the USA's largest estuary.
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NAAQS
•
ISA NOxSOxPM Ecology (2018)
Cited in the Second Draft
Appendix 7
Appendix 10
•
ISA NOxSOxPM Ecology (2020- Final Project Page)
Cited
Appendix 7
Appendix 10
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