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1. Identity statement
Reference TypeConference Paper (Conference Proceedings)
Sitemtc-m21c.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34R/3UUNT9B
Repositorysid.inpe.br/mtc-m21c/2020/02.17.16.27
Metadata Repositorysid.inpe.br/mtc-m21c/2020/02.17.16.27.01
Metadata Last Update2022:01.04.01.34.58 (UTC) administrator
Secondary KeyINPE--PRE/
Citation KeyFernández-CarreraDetoBranSubr:2020:NiFiCa
TitleNitrogen fixation can support a substantial fraction of pelagic primary production in Brazilian waters
Year2020
Access Date2024, Apr. 29
Secondary TypePRE CI
2. Context
Author1 Fernández-Carrera, Ana
2 Detoni, Amália Maria Sacilotto
3 Brandt, Peter
4 Subramaniam, Ajit
Group1
2 DIDSR-CGOBT-INPE-MCTIC-GOV-BR
Affiliation1 University of Vigo
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 GEOMAR
4 Columbia University
Author e-Mail Address1
2 amalia.detoni@inpe.br
Conference NameOcean Sciences Meeting
Conference LocationSan Diego, California
Date16-21 feb.
Book TitleProceedings
History (UTC)2020-02-17 16:27:24 :: simone -> administrator :: 2020
2022-01-04 01:34:58 :: administrator -> simone :: 2020
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Content TypeExternal Contribution
AbstractNitrogen fixers are commonly found in near-shore waters off the coast of Brazil in the South Atlantic Ocean (e.g., Trichodesmium spp, unicellular cyanobacteria, diazotroph-diatoms associations). Their relatively high abundances suggest that nitrogen fixation could be substantial in these waters. In February 2018, we did two zonal transects perpendicular to the coasts of Brazil at 5° and 11°S aboard RV Meteor. There, we measured concurrent rates of nitrogen fixation and primary production at 10m depth using stable tracers (13C and 15N) and nitrogen stable isotopes in seston (δ15N, air ) throughout the euphotic layer along with the hydrographic structure of the water column. In both transects, the rates of nitrogen fixation were variable, depicted no clear zonal pattern, and ranged between 0.5 and 10 nmol N L−1 d−1 (0.01−0.14 mg N m−3 d−1). Primary production showed the same behavior and ranged between 1 and 8 mg C m-3 d-1. Nitrogen fixation supported less than 15% of primary production in all stations but one at 11°S, where it seemed to exceed the requirements of primary producers (>100%). However, the δ15N of seston was consistently below 4 in the euphotic layer, pointing to a persistent supply of nitrogen by nitrogen fixation through time.
AreaSRE
Arrangementurlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Nitrogen fixation can...
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Languageen
User Groupsimone
Reader Groupadministrator
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Visibilityshown
Update Permissionnot transferred
5. Allied materials
Next Higher Units8JMKD3MGPCW/3ER446E
Host Collectionurlib.net/www/2017/11.22.19.04
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