Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/115443
Campo DC Valoridioma
dc.contributor.authorHallstrøm, Sørenen_US
dc.contributor.authorBenavides Gorostegui,Maren_US
dc.contributor.authorSalamon, Ellen R.en_US
dc.contributor.authorArístegui Ruiz, Javieren_US
dc.contributor.authorRiemann, Lasseen_US
dc.date.accessioned2022-06-23T07:13:29Z-
dc.date.available2022-06-23T07:13:29Z-
dc.date.issued2022en_US
dc.identifier.issn0168-2563en_US
dc.identifier.otherScopus-
dc.identifier.urihttp://hdl.handle.net/10553/115443-
dc.description.abstractWe investigated dinitrogen (N2) fixation activity and diazotroph community composition across the Cape Verde Frontal Zone (CVFZ), from photic epipelagic waters (0-200 m) to aphotic meso- (200–1000 m) and bathypelagic (> 1000 m) waters. The highest N2 fixation rates of 4.1 ± 2.2 nmol N l− 1 day− 1 and 7.8 ± 2.3 nmol N l− 1 day− 1 were in epipelagic waters south of the front. We detected aphotic N2 fixation in 5 out of 32 samples, primarily south of the front, and sporadically down to 3,000 m, with rates ranging from 0.03 ± 0.01 nmol N l− 1 day− 1 to 0.07 ± 0.01 nmol N l− 1 day− 1. Cyanobacteria dominated the diazotroph community and nitrogenase gene (nifH) expression profiles in surface waters and, surprisingly, in aphotic waters. The detection of cyanobacterial nifH genes by DNA sequencing and quantitative PCR in the aphotic zone, together with nifH expression in meso- and bathypelagic waters, indicates a downward flux of metabolically active cyanobacteria, and points to a contribution to the observed aphotic N2 fixation rates. In the photic zone, UCYN-A dominated north of the front, whereas Trichodesmium was mainly found in the southern region. However, our results also show that cross-frontal advection of cyanobacterial diazotrophs can occur via intrusions of surface water. Salinity, temperature, and mixed layer depth were the main determinants of the diazotroph composition and distribution of the key cyanobacteria. Thus, the front appeared to act as a dynamic barrier controlling the distribution of cyanobacterial diazotrophs.en_US
dc.languageengen_US
dc.relation.ispartofBiogeochemistryen_US
dc.sourceBiogeochemistry [ISSN 0168-2563], (May 2022)en_US
dc.subject251007 Oceanografía físicaen_US
dc.subject251005 Zoología marinaen_US
dc.subject241403 Metabolismo bacterianoen_US
dc.subject.otherEastern Boundary Upwelling Systemen_US
dc.subject.otherN2 Fixationen_US
dc.subject.otherNortheast Atlanticen_US
dc.subject.otherTrichodesmiumen_US
dc.subject.otherUcyn-Aen_US
dc.subject.otherUpwellingen_US
dc.titleActivity and distribution of diazotrophic communities across the Cape Verde Frontal Zone in the Northeast Atlantic Oceanen_US
dc.typeinfo:eu-repo/semantics/Articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s10533-022-00940-wen_US
dc.identifier.scopus85130567576-
dc.contributor.orcidNO DATA-
dc.contributor.orcidNO DATA-
dc.contributor.orcidNO DATA-
dc.contributor.orcidNO DATA-
dc.contributor.orcid0000-0001-9207-2543-
dc.contributor.authorscopusid56013775600-
dc.contributor.authorscopusid36501571300-
dc.contributor.authorscopusid57216470829-
dc.contributor.authorscopusid7006816204-
dc.contributor.authorscopusid6603550769-
dc.identifier.eissn1573-515X-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.utils.revisionen_US
dc.date.coverdateMayo 2022en_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-BASen_US
dc.description.sjr1,293
dc.description.jcr4,0
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
dc.description.miaricds11,0
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.author.deptGIR IOCAG: Oceanografía Biológica y Algología Aplicada-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Biología-
crisitem.author.orcid0000-0002-7526-7741-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameBenavides Gorostegui,Mar-
crisitem.author.fullNameArístegui Ruiz, Javier-
Colección:Artículos
Vista resumida

Citas SCOPUSTM   

3
actualizado el 24-mar-2024

Visitas

37
actualizado el 23-mar-2024

Google ScholarTM

Verifica

Altmetric


Comparte



Exporta metadatos



Los elementos en ULPGC accedaCRIS están protegidos por derechos de autor con todos los derechos reservados, a menos que se indique lo contrario.