The importance of dissimilatory nitrate reduction to ammonium (DNRA) in the nitrogen cycle of coastal ecosystems

dc.contributor.author Giblin, Anne E.
dc.contributor.author Tobias, Craig R.
dc.contributor.author Song, Bongkeun
dc.contributor.author Weston, Nathaniel
dc.contributor.author Banta, Gary T.
dc.contributor.author Rivera-Monroy, Victor H.
dc.date.accessioned 2013-10-03T15:28:55Z
dc.date.available 2013-10-03T15:28:55Z
dc.date.issued 2013-09
dc.description Author Posting. © The Oceanography Society, 2013. This article is posted here by permission of The Oceanography Society for personal use, not for redistribution. The definitive version was published in Oceanography 26, no. 3 (2013): 124–131, doi:10.5670/oceanog.2013.54. en_US
dc.description.abstract Until recently, it was believed that biological assimilation and gaseous nitrogen (N) loss through denitrification were the two major fates of nitrate entering or produced within most coastal ecosystems. Denitrification is often viewed as an important ecosystem service that removes reactive N from the ecosystem. However, there is a competing nitrate reduction process, dissimilatory nitrate reduction to ammonium (DNRA), that conserves N within the ecosystem. The recent application of nitrogen stable isotopes as tracers has generated growing evidence that DNRA is a major nitrogen pathway that cannot be ignored. Measurements comparing the importance of denitrification vs. DNRA in 55 coastal sites found that DNRA accounted for more than 30% of the nitrate reduction at 26 sites. DNRA was the dominant pathway at more than one-third of the sites. Understanding what controls the relative importance of denitrification and DNRA, and how the balance changes with increased nitrogen loading, is of critical importance for predicting eutrophication trajectories. Recent improvements in methods for assessing rates of DNRA have helped refine our understanding of the rates and controls of this process, but accurate measurements in vegetated sediment still remain a challenge. en_US
dc.description.sponsorship Financial support has come from the LTER program (OCE-1238212; FCEDEB 1237517/DBI 0620409). Additional support was provided from other National Science Foundation grants to A.E.G. (DEB 1050713), C.R.T. (EAR- 1020431 and EAR-1024662), and B.S. (OCE-0851435 and DEB-1329273). en_US
dc.format.mimetype application/pdf
dc.identifier.citation Oceanography 26, no. 3 (2013): 124–131 en_US
dc.identifier.doi 10.5670/oceanog.2013.54
dc.identifier.uri https://hdl.handle.net/1912/6240
dc.language.iso en_US en_US
dc.publisher The Oceanography Society en_US
dc.relation.uri https://doi.org/10.5670/oceanog.2013.54
dc.title The importance of dissimilatory nitrate reduction to ammonium (DNRA) in the nitrogen cycle of coastal ecosystems en_US
dc.type Article en_US
dspace.entity.type Publication
relation.isAuthorOfPublication 3c43fad1-ff0d-453b-ad26-7d9e2959ab7a
relation.isAuthorOfPublication b4db1ec6-34b9-4b5b-a857-8c028d74c26a
relation.isAuthorOfPublication b5704b6c-1abc-4237-8df4-93f85b183e94
relation.isAuthorOfPublication bb19df0e-5169-44da-a522-45c4bd3de3ca
relation.isAuthorOfPublication d8aa6a76-3bc7-4cb5-93ef-d518076e451a
relation.isAuthorOfPublication 22965b7f-f62e-4f9b-9ac3-9fdfa3cff5ce
relation.isAuthorOfPublication.latestForDiscovery 3c43fad1-ff0d-453b-ad26-7d9e2959ab7a
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
26-3_giblin.pdf
Size:
1.5 MB
Format:
Adobe Portable Document Format
Description:
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.89 KB
Format:
Item-specific license agreed upon to submission
Description: