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| Berthelot, H.; Benavides, M.; Moisander, P. H.; Grosso, O.; Bonnet, S.. |
| Dinitrogen (N-2) fixation rates were investigated in the euphotic layer of the Bismarck and Solomon Seas using N-15(2) incubation assays taking into account both the particulate and the dissolved pools. Average depth-integrated particulate N-2 fixation rates were 203 (range 43-399) and 1396 (range 176-3132)mol N m(-2) d(-1) in the Bismarck and Solomon Seas, respectively. In both seas, N-2 fixation measured in the dissolved pool was similar to particulate N-2 fixation, highlighting the potentially substantial underestimation of N-2 fixation in oceanic budgets when only particulate N-2 fixation is considered. Among the diazotroph phylotypes targeted using quantitative polymerase chain reaction amplification of nifH genes, Trichodesmium was the most abundant.... |
| Tipo: Text |
Palavras-chave: Diazotrophy; Trichodesmium; Crocosphaera; Cyanothece; N release. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00404/51512/72629.pdf |
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