lnu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Diverse diazotrophs are present on sinking particles in the North Pacific Subtropical Gyre
Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science. Univ Calif Santa Cruz, USA. (Ctr Ecol & Evolut Microbial Model Syst EEMiS)ORCID iD: 0000-0003-3083-7437
Univ Calif Santa Cruz, USA.
University of Gothenburg.ORCID iD: 0000-0002-8989-245X
Woods Hole Oceanog Inst, USA.
Show others and affiliations
2019 (English)In: The ISME Journal, ISSN 1751-7362, E-ISSN 1751-7370, Vol. 13, no 1, p. 170-182Article in journal (Refereed) Published
Abstract [en]

Sinking particles transport carbon and nutrients from the surface ocean into the deep sea and are considered hot spots for bacterial diversity and activity. In the oligotrophic oceans, nitrogen (N-2)-fixing organisms (diazotrophs) are an important source of new N but the extent to which these organisms are present and exported on sinking particles is not well known. Sinking particles were collected every 6 h over a 2-day period using net traps deployed at 150 m in the North Pacific Subtropical Gyre. The bacterial community and composition of diazotrophs associated with individual and bulk sinking particles was assessed using 16S rRNA and nifH gene amplicon sequencing. The bacterial community composition in bulk particles remained remarkably consistent throughout time and space while large variations of individually picked particles were observed. This difference suggests that unique biogeochemical conditions within individual particles may offer distinct ecological niches for specialized bacterial taxa. Compared to surrounding seawater, particle samples were enriched in different size classes of globally significant N-2-fixing cyanobacteria including Trichodesmium, symbionts of diatoms, and the unicellular cyanobacteria Crocosphaera and UCYN-A. The particles also contained nifH gene sequences of diverse non-cyanobacterial diazotrophs suggesting that particles could be loci for N-2 fixation by heterotrophic bacteria. The results demonstrate that diverse diazotrophs were present on particles and that new N may thereby be directly exported from surface waters on sinking particles.

Place, publisher, year, edition, pages
Nature Publishing Group, 2019. Vol. 13, no 1, p. 170-182
National Category
Ecology Microbiology
Research subject
Ecology, Microbiology
Identifiers
URN: urn:nbn:se:lnu:diva-79741DOI: 10.1038/s41396-018-0259-xISI: 000453576600014PubMedID: 30116043Scopus ID: 2-s2.0-85052502520OAI: oai:DiVA.org:lnu-79741DiVA, id: diva2:1282105
Available from: 2019-01-24 Created: 2019-01-24 Last updated: 2019-08-29Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records BETA

Farnelid, Hanna

Search in DiVA

By author/editor
Farnelid, HannaPloug, HelleCollins, James R.van Mooy, Benjamin A. S.
By organisation
Department of Biology and Environmental Science
In the same journal
The ISME Journal
EcologyMicrobiology

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 36 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf