Cristin-resultat-ID: 1893469
Sist endret: 30. august 2021, 14:33
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Rapid landscape changes in plastic bays along the Norwegian coastline

Bidragsytere:
  • Eivind Bastesen
  • Marte Haave
  • Gidske Leknæs Andersen
  • Gaute Velle
  • Gunhild Bødtker og
  • Charlotte Gannefors Krafft

Tidsskrift

Frontiers in Marine Science
ISSN 2296-7745
e-ISSN 2296-7745
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 8
Open Access

Importkilder

Scopus-ID: 2-s2.0-85102952530

Beskrivelse Beskrivelse

Tittel

Rapid landscape changes in plastic bays along the Norwegian coastline

Sammendrag

The Norwegian Coastal Current transports natural debris and plastic waste along the Norwegian coastline. Deposition occurs in so-called wreck-bays and includes floating debris, such as seaweed, driftwood and volcanic pumice, and increasing amounts of plastics during the last decades. Deposition in these bays is controlled by ocean currents, tidal movements, prevailing winds and coastal morphology. We have compared soil profiles, analyzed the vegetation and inspected aerial photos back to 1950 in wreck-bays and defined three zones in the wreck-bays, where accumulation follows distinct physical processes. Zone 1 includes the foreshore deposition and consists of recent deposits that are frequently reworked by high tides and wave erosion. Thus, there is no accumulation in Zone 1. Zone 2 is situated above the high tide mark and includes storm embankments. Here, there is an archive of accumulated debris potentially deposited decades ago. Zone 3 starts above the storm embankments. The debris of Zone 3 is transported by wind from Zone 1 and Zone 2, and the zone continues onshore until the debris meets natural obstacles. Plastic accumulation seems to escalate soil formation as plastic is entangled within the organic debris Mapping and characterizing the soil layers indicates that deep soils have been formed by 50 or more years’ accumulation, while the pre-plastic soil layers are thin. The plastic soil forms dams in rivers and wetlands, changing the shape and properties of the coastal landscape, also altering the microhabitat for plants. This case-study describes an ongoing landscape and vegetation change, evidently co-occurring with the onset of plastic accumulation. Such processes are not limited to the Norwegian coastline but are likely to occur wherever there is accumulation of plastic and organic materials. If this is allowed to continue, we may witness a continued and escalating change in the shape and function of coastal landscapes and ecosystems globally.

Bidragsytere

Eivind Bastesen

  • Tilknyttet:
    Forfatter
    ved NORCE Energi og teknologi ved NORCE Norwegian Research Centre AS
Aktiv cristin-person

Marte Haave

  • Tilknyttet:
    Forfatter
    ved NORCE Klima og miljø ved NORCE Norwegian Research Centre AS
  • Tilknyttet:
    Forfatter
    ved Kjemisk institutt ved Universitetet i Bergen

Gidske Leknæs Andersen

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

Gaute Velle

  • Tilknyttet:
    Forfatter
    ved NORCE Klima og miljø ved NORCE Norwegian Research Centre AS
  • Tilknyttet:
    Forfatter
    ved Institutt for biovitenskap (BIO) ved Universitetet i Bergen

Gunhild Bødtker

  • Tilknyttet:
    Forfatter
    ved NORCE Energi og teknologi ved NORCE Norwegian Research Centre AS
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