Cristin-resultat-ID: 2211980
Sist endret: 11. desember 2023, 17:06
Resultat
Mastergradsoppgave
2023

Biodiversity and distribution of Arctic phytoplankton and ice algae

Bidragsytere:
  • Khrystyna Gryn

Utgiver/serie

Utgiver

Universitetet i Oslo
NVI-nivå 0

Om resultatet

Mastergradsoppgave
Publiseringsår: 2023
Antall sider: 79

Klassifisering

Fagfelt (NPI)

Fagfelt: Biovitenskap
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

Biodiversity and distribution of Arctic phytoplankton and ice algae

Sammendrag

The project aims to enhance our understanding of Arctic marine ecosystems by researching the diversity, distribution, and functioning of phytoplankton and ice algae in response to rapid environmental changes. The diversity and biogeography of phytoplankton and ice algae from the Barents Sea were studied by combining algal cultivation and 18S and 28S rRNA gene sequencing. During the Nansen legacy project cruise in August 2019 (AeN706), a total of 46 algal strains were isolated from stations along a S-N transect in the Barents Sea into the Arctic Ocean. The identifications obtained from DNA sequencing, phylogenetic analysis and morphological examination indicated the presence of common Arctic algal species, such as Attheya septentrionalis, Thalassiosira gravida, and Chaetoceros neogracilis, among the identified genotypes. Additionally, this study has also characterised potentially novel species or species that have not been adequately described before. Taxonomic identification of the strains was performed using molecular and morphological approaches, and the biogeographic distribution was mapped using a global compilation of published metabarcoding datasets. It was demonstrated by the biogeographic analyses that four general biogeographic distribution types exist for arctic phytoplankton and ice algae: polar, arctic, arctic-temperate, and cosmopolitan. Genotypes with arctic-temperate distribution was most common among the characterised strains, and genotypes endemic to the arctic was also found. Only two genotypes with cosmopolitan distribution and one genotype with polar distribution were discovered. The results highlight that the phytoplankton and ice algal communities in the Barents Sea and Arctic Ocean consist of genotypes endemic to the Arctic and genotypes with broader biogeographic distributions.

Bidragsytere

Aktiv cristin-person

Bente Edvardsen

  • Tilknyttet:
    Veileder
    ved Seksjon for akvatisk biologi og toksikologi ved Universitetet i Oslo

Khrystyna Gryn

  • Tilknyttet:
    Forfatter
    ved Seksjon for akvatisk biologi og toksikologi ved Universitetet i Oslo

Luka Šupraha

  • Tilknyttet:
    Veileder
    ved Seksjon for akvatisk biologi og toksikologi ved Universitetet i Oslo

Wenche Eikrem

  • Tilknyttet:
    Veileder
    ved Plante- og soppsystematikk ved Universitetet i Oslo

Karoline Saubrekka

  • Tilknyttet:
    Veileder
    ved Seksjon for akvatisk biologi og toksikologi ved Universitetet i Oslo
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