Spatial variation in N 2 -fixation rate and diazotroph activity in the Tropical Atlantic
International audience A variety of N 2 -fixers occur in the tropical Atlantic and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and novel rate measurements for the Tropical North Atlantic provides insight into...
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ftinsu:oai:HAL:hal-00297855v1 2023-11-12T04:22:20+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) 2006-11-09 https://hal.science/hal-00297855 https://hal.science/hal-00297855/document https://hal.science/hal-00297855/file/bgd-3-1739-2006.pdf en eng HAL CCSD European Geosciences Union hal-00297855 https://hal.science/hal-00297855 https://hal.science/hal-00297855/document https://hal.science/hal-00297855/file/bgd-3-1739-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1810-6277 EISSN: 1810-6285 Biogeosciences Discussions https://hal.science/hal-00297855 Biogeosciences Discussions, 2006, 3 (6), pp.1739-1761 [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 2006 ftinsu 2023-10-25T16:28:26Z International audience A variety of N 2 -fixers occur in the tropical Atlantic and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and novel rate measurements for the Tropical North Atlantic provides insight into the role of two different diazotroph groups in supporting N 2 fixation in the tropical Atlantic. The overall rate of N 2 -fixation by the two groups of diazotrophs was similar in the eastern and western parts of the basin, but N 2 -fixation by \textit{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 the tropical Atlantic and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and novel rate measurements for the Tropical North Atlantic provides insight into the role of two different diazotroph groups in supporting N 2 fixation in the tropical Atlantic. The overall rate of N 2 -fixation by the two groups of diazotrophs was similar in the eastern and western parts of the basin, but N 2 -fixation by \textit{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 |
2006 |
url |
https://hal.science/hal-00297855 https://hal.science/hal-00297855/document https://hal.science/hal-00297855/file/bgd-3-1739-2006.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1810-6277 EISSN: 1810-6285 Biogeosciences Discussions https://hal.science/hal-00297855 Biogeosciences Discussions, 2006, 3 (6), pp.1739-1761 |
op_relation |
hal-00297855 https://hal.science/hal-00297855 https://hal.science/hal-00297855/document https://hal.science/hal-00297855/file/bgd-3-1739-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782337403070971904 |