Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean
The broad distribution and often high densities of the cyanobacterium Trichodesmium spp. in oligotrophic waters imply a substantial role for this one taxon in the oceanic N cycle of the marine tropics and subtropics. New results from 154 stations on six research cruises in the North Atlantic Ocean s...
Main Authors: | , , , , , , , |
---|---|
Format: | Text |
Language: | unknown |
Published: |
Columbia University
2005
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7916/d86w9b1v https://academiccommons.columbia.edu/doi/10.7916/D86W9B1V |
id |
ftdatacite:10.7916/d86w9b1v |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7916/d86w9b1v 2023-05-15T17:26:19+02:00 Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean Capone, Douglas G. Burns, James A. Montoya, Joseph P. Subramaniam, Ajit Mahaffey, Claire Gunderson, Troy Michaels, Anthony F. Carpenter, Edward J. 2005 https://dx.doi.org/10.7916/d86w9b1v https://academiccommons.columbia.edu/doi/10.7916/D86W9B1V unknown Columbia University https://dx.doi.org/10.1029/2004gb002331 Nitrogen--Fixation Trichodesmium Biogeochemistry Chemical oceanography Text Articles article-journal ScholarlyArticle 2005 ftdatacite https://doi.org/10.7916/d86w9b1v https://doi.org/10.1029/2004gb002331 2021-11-05T12:55:41Z The broad distribution and often high densities of the cyanobacterium Trichodesmium spp. in oligotrophic waters imply a substantial role for this one taxon in the oceanic N cycle of the marine tropics and subtropics. New results from 154 stations on six research cruises in the North Atlantic Ocean show depth-integrated N2 fixation by Trichodesmium spp. at many stations that equalled or exceeded the estimated vertical flux of NO3− into the euphotic zone by diapycnal mixing. Areal rates are consistent with those derived from several indirect geochemical analyses. Direct measurements of N2 fixation rates by Trichodesmium are also congruent with upper water column N budgets derived from parallel determinations of stable isotope distributions, clearly showing that N2 fixation by Trichodesmium is a major source of new nitrogen in the tropical North Atlantic. We project a conservative estimate of the annual input of new N into the tropical North Atlantic of at least 1.6 × 1012 mol N by Trichodesmium N2 fixation alone. This input can account for a substantial fraction of the N2 fixation in the North Atlantic inferred by several of the geochemical approaches. Text North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Nitrogen--Fixation Trichodesmium Biogeochemistry Chemical oceanography |
spellingShingle |
Nitrogen--Fixation Trichodesmium Biogeochemistry Chemical oceanography Capone, Douglas G. Burns, James A. Montoya, Joseph P. Subramaniam, Ajit Mahaffey, Claire Gunderson, Troy Michaels, Anthony F. Carpenter, Edward J. Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean |
topic_facet |
Nitrogen--Fixation Trichodesmium Biogeochemistry Chemical oceanography |
description |
The broad distribution and often high densities of the cyanobacterium Trichodesmium spp. in oligotrophic waters imply a substantial role for this one taxon in the oceanic N cycle of the marine tropics and subtropics. New results from 154 stations on six research cruises in the North Atlantic Ocean show depth-integrated N2 fixation by Trichodesmium spp. at many stations that equalled or exceeded the estimated vertical flux of NO3− into the euphotic zone by diapycnal mixing. Areal rates are consistent with those derived from several indirect geochemical analyses. Direct measurements of N2 fixation rates by Trichodesmium are also congruent with upper water column N budgets derived from parallel determinations of stable isotope distributions, clearly showing that N2 fixation by Trichodesmium is a major source of new nitrogen in the tropical North Atlantic. We project a conservative estimate of the annual input of new N into the tropical North Atlantic of at least 1.6 × 1012 mol N by Trichodesmium N2 fixation alone. This input can account for a substantial fraction of the N2 fixation in the North Atlantic inferred by several of the geochemical approaches. |
format |
Text |
author |
Capone, Douglas G. Burns, James A. Montoya, Joseph P. Subramaniam, Ajit Mahaffey, Claire Gunderson, Troy Michaels, Anthony F. Carpenter, Edward J. |
author_facet |
Capone, Douglas G. Burns, James A. Montoya, Joseph P. Subramaniam, Ajit Mahaffey, Claire Gunderson, Troy Michaels, Anthony F. Carpenter, Edward J. |
author_sort |
Capone, Douglas G. |
title |
Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean |
title_short |
Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean |
title_full |
Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean |
title_fullStr |
Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean |
title_full_unstemmed |
Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Oceean |
title_sort |
nitrogen fixation by trichodesmium spp.: an important source of new nitrogen to the tropical and subtropical north atlantic oceean |
publisher |
Columbia University |
publishDate |
2005 |
url |
https://dx.doi.org/10.7916/d86w9b1v https://academiccommons.columbia.edu/doi/10.7916/D86W9B1V |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1029/2004gb002331 |
op_doi |
https://doi.org/10.7916/d86w9b1v https://doi.org/10.1029/2004gb002331 |
_version_ |
1766117948344238080 |