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Organic carbon, and not copper, controls denitrification in oxygen minimum zones of the ocean

DRS at CSIR-National Institute of Oceanography

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Title Organic carbon, and not copper, controls denitrification in oxygen minimum zones of the ocean
 
Creator Ward, B.B.
Tuit, C.B.
Jayakumar, A.
Rich, J.J.
Moffett, J.
Naqvi, S.W.A.
 
Subject organic carbon
denitrification
oxygen minimum layer
copper
 
Description Incubation experiments under trace metal clean conditions and ambient oxygen concentrations were used to investigate the response of microbial assemblages in oxygen minimum zones (OMZs) to additions of organic carbon and copper, two factors that might be expected to limit denitrification in the ocean. In the OMZs of the Eastern Tropical North and South Pacific, denitrification appeared to be limited by organic carbon; exponential cell growth and rapid nitrate and nitrite depletion occurred upon the addition of small amounts of carbon, but copper had no effect. In the OMZ of the Arabian Sea, neither carbon nor copper appeared to be limiting. It is hypothesized that denitrification is variable in time and space in the OMZs inways that may be predictable based on links to the episodic supply of organic substrates from overlying productive surface waters.
 
Date 2008-11-25T10:37:03Z
2008-11-25T10:37:03Z
2008
 
Type Journal Article
 
Identifier Deep-Sea Research I, vol.55; 1672-1683p.
http://drs.nio.org/drs/handle/2264/1502
 
Language en
 
Rights Copyright [2008]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
 
Publisher Elsevier