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Title: New Perspectives on the Marine Carbon Cycle–The Marine Dissolved Organic Matter Reactivity Continuum
Award ID(s):
1829888
PAR ID:
10408982
Author(s) / Creator(s):
 ;  ;  ;  
Publisher / Repository:
American Chemical Society
Date Published:
Journal Name:
Environmental Science & Technology
Volume:
56
Issue:
9
ISSN:
0013-936X
Page Range / eLocation ID:
p. 5371-5380
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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  1. Organic sulfur (OS) in the ocean is produced in vast quantities by primary producers that fix inorganic sulfate into proteins, metabolites, and other ubiquitous biomolecules. As biogenic OS is transported and transformed through the marine environment, it is joined by OS from two additional sources: abiogenic OS from sulfurization under anoxic conditions, and geological OS from the weathering of sediments and rocks. Important differences in the properties of the OS from these sources affect its fate in the environment and underlie the formation of recalcitrant dissolved organic matter and sedimentary kerogen. This review builds connections between the rapid OS cycle in the surface ocean and these longer-lived reservoirs, applying our growing knowledge of particle fluxes and organic matter dynamics at the sediment–water interface. Future studies on marine OS are poised to help us better understand the implications of these fluxes for the carbon cycle and climate across human and geological timescales. 
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