Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic
International audience A variety of N 2 -fixers occur in oligotrophic waters and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and new rate measurements for the North Atlantic provides insight into the role of...
Main Authors: | , , |
---|---|
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2007
|
Subjects: | |
Online Access: | https://hal.science/hal-00297619 https://hal.science/hal-00297619/document https://hal.science/hal-00297619/file/bg-4-369-2007.pdf |
id |
ftinsu:oai:HAL:hal-00297619v1 |
---|---|
record_format |
openpolar |
spelling |
ftinsu:oai:HAL:hal-00297619v1 2023-11-12T04:22:22+01:00 Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic Montoya, J. P. Voss, M. Capone, D. G. Georgia Institute of Technology Atlanta Leibniz-Institut für Ostseeforschung Warnemünde (IOW) Leibniz Association University of Southern California (USC) 2007-06-22 https://hal.science/hal-00297619 https://hal.science/hal-00297619/document https://hal.science/hal-00297619/file/bg-4-369-2007.pdf en eng HAL CCSD European Geosciences Union hal-00297619 https://hal.science/hal-00297619 https://hal.science/hal-00297619/document https://hal.science/hal-00297619/file/bg-4-369-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-00297619 Biogeosciences, 2007, 4 (3), pp.369-376 [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftinsu 2023-10-25T16:28:36Z International audience A variety of N 2 -fixers occur in oligotrophic waters and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and new rate measurements for the North Atlantic provides insight into the role of two different groups of N 2 -fixers ( Trichodesmium and small diazotrophs) in supporting N 2 fixation in the tropical Atlantic. The highest rates of N 2 fixation occurred in the western part of the basin, but the full data set showed no significant difference between the eastern and western parts of the basin in overall rates of N 2 -fixation by the two groups of diazotrophs. N 2 -fixation by Trichodesmium was strongly dominant in the western part of the basin while small diazotrophs played a much larger role to the east of 40° W. The reasons for this shift in dominance are unclear, as is the identity of the small organisms fixing N 2 in the water column. Article in Journal/Newspaper North Atlantic Institut national des sciences de l'Univers: HAL-INSU |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Montoya, J. P. Voss, M. Capone, D. G. Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic |
topic_facet |
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience A variety of N 2 -fixers occur in oligotrophic waters and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and new rate measurements for the North Atlantic provides insight into the role of two different groups of N 2 -fixers ( Trichodesmium and small diazotrophs) in supporting N 2 fixation in the tropical Atlantic. The highest rates of N 2 fixation occurred in the western part of the basin, but the full data set showed no significant difference between the eastern and western parts of the basin in overall rates of N 2 -fixation by the two groups of diazotrophs. N 2 -fixation by Trichodesmium was strongly dominant in the western part of the basin while small diazotrophs played a much larger role to the east of 40° W. The reasons for this shift in dominance are unclear, as is the identity of the small organisms fixing N 2 in the water column. |
author2 |
Georgia Institute of Technology Atlanta Leibniz-Institut für Ostseeforschung Warnemünde (IOW) Leibniz Association University of Southern California (USC) |
format |
Article in Journal/Newspaper |
author |
Montoya, J. P. Voss, M. Capone, D. G. |
author_facet |
Montoya, J. P. Voss, M. Capone, D. G. |
author_sort |
Montoya, J. P. |
title |
Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic |
title_short |
Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic |
title_full |
Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic |
title_fullStr |
Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic |
title_full_unstemmed |
Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic |
title_sort |
spatial variation in n 2 -fixation rate and diazotroph activity in the tropical atlantic |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00297619 https://hal.science/hal-00297619/document https://hal.science/hal-00297619/file/bg-4-369-2007.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.science/hal-00297619 Biogeosciences, 2007, 4 (3), pp.369-376 |
op_relation |
hal-00297619 https://hal.science/hal-00297619 https://hal.science/hal-00297619/document https://hal.science/hal-00297619/file/bg-4-369-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782337433069682688 |