Cristin-resultat-ID: 1959920
Sist endret: 14. desember 2021, 10:34
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments

Bidragsytere:
  • Oliver Müller
  • Lena Seuthe
  • Bernadette Pree
  • Gunnar Bratbak
  • Aud Larsen og
  • Maria Lund Paulsen

Tidsskrift

Microorganisms
ISSN 2076-2607
e-ISSN 2076-2607
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Trykket: 2021
Volum: 9
Hefte: 11
Sider: 1 - 21
Artikkelnummer: 2378
Open Access

Importkilder

Scopus-ID: 2-s2.0-85119058557

Beskrivelse Beskrivelse

Tittel

How microbial food web interactions shape the arctic ocean bacterial community revealed by size fractionation experiments

Sammendrag

In the Arctic, seasonal changes are substantial, and as a result, the marine bacterial community composition and functions differ greatly between the dark winter and light-intensive summer. While light availability is, overall, the external driver of the seasonal changes, several internal biological interactions structure the bacterial community during shorter timescales. These include specific phytoplankton–bacteria associations, viral infections and other top-down controls. Here, we uncover these microbial interactions and their effects on the bacterial community composition during a full annual cycle by manipulating the microbial food web using size fractionation. The most profound community changes were detected during the spring, with ‘mutualistic phytoplankton’—Gammaproteobacteria interactions dominating in the pre-bloom phase and ‘substrate-dependent phytoplankton’—Flavobacteria interactions during blooming conditions. Bacterivores had an overall limited effect on the bacterial community composition most of the year. However, in the late summer, grazing was the main factor shaping the community composition and transferring carbon to higher trophic levels. Identifying these small-scale interactions improves our understanding of the Arctic marine microbial food web and its dynamics.

Bidragsytere

Oliver Müller

  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen

Lena Seuthe

  • Tilknyttet:
    Forfatter
    ved Institutt for arktisk og marin biologi ved UiT Norges arktiske universitet

Bernadette Pree

  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen

Gunnar Bratbak

  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap ved Universitetet i Bergen

Aud Larsen

  • Tilknyttet:
    Forfatter
    ved NORCE Klima og miljø ved NORCE Norwegian Research Centre AS
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