Cristin-resultat-ID: 1915591
Sist endret: 9. juli 2021, 12:19
NVI-rapporteringsår: 2021
Resultat
Vitenskapelig artikkel
2021

Microplastic Fiber Emissions From Wastewater Effluents: Abundance, Transport Behavior and Exposure Risk for Biota in an Arctic Fjord

Bidragsytere:
  • Dorte Herzke
  • Peygham Ghaffari
  • Jan Henry Sundet
  • Caroline Aas Tranang og
  • Claudia Halsband

Tidsskrift

Frontiers in Environmental Science
ISSN 2296-665X
e-ISSN 2296-665X
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 9
Artikkelnummer: 662168
Open Access

Importkilder

Scopus-ID: 2-s2.0-85108370865

Beskrivelse Beskrivelse

Tittel

Microplastic Fiber Emissions From Wastewater Effluents: Abundance, Transport Behavior and Exposure Risk for Biota in an Arctic Fjord

Sammendrag

Microfibers (MF) are one of the major classes of microplastic found in the marine environment on a global scale. Very little is known about how they move and distribute from point sources such as wastewater effluents into the ocean. We chose Adventfjorden near the settlement of Longyearbyen on the Arctic Svalbard archipelago as a case study to investigate how microfibers emitted with untreated wastewater will distribute in the fjord, both on a spatial and temporal scale. Fiber abundance in the effluent was estimated from wastewater samples taken during two one-week periods in June and September 2017. Large emissions of MFs were detected, similar in scale to a modern WWTP serving 1.3 million people and providing evidence of the importance of untreated wastewater from small settlements as major local sources for MF emissions in the Arctic. Fiber movement and distribution in the fjord mapped using an online-coupled hydrodynamic-drift model (FVCOM-FABM). For parameterizing a wider spectrum of fibers from synthetic to wool, four different density classes of MFs, i.e., buoyant, neutral, sinking, and fast sinking fibers are introduced to the modeling framework. The results clearly show that fiber class has a large impact on the fiber distributions. Light fibers remained in the surface layers and left the fjord quickly with outgoing currents, while heavy fibers mostly sank to the bottom and deposited in the inner parts of the fjord and along the northern shore. A number of accumulation sites were identified within the fjord. The southern shore, in contrast, was much less affected, with low fiber concentrations throughout the modeling period. Fiber distributions were then compared with published pelagic and benthic fauna distributions in different seasons at selected stations around the fjord. The ratios of fibers to organisms showed a very wide range, indicating hot spots of encounter risk for pelagic and benthic biota. This approach, in combination with in-situ ground-truthing, can be instrumental in understanding microplastic pathways and fate in fjord systems and coastal areas and help authorities develop monitoring and mitigation strategies for microfiber and microplastic pollution in their local waters.

Bidragsytere

Dorte Herzke

  • Tilknyttet:
    Forfatter
    ved Miljøkjemi ved NILU - Norsk institutt for luftforskning
  • Tilknyttet:
    Forfatter
    ved Institutt for arktisk og marin biologi ved UiT Norges arktiske universitet

Peygham Ghaffari

  • Tilknyttet:
    Forfatter
    ved Akvaplan Niva AS

Jan Henry Sundet

  • Tilknyttet:
    Forfatter
    ved Bentiske ressurser og prosesser ved Havforskningsinstituttet

Caroline Aas Tranang

  • Tilknyttet:
    Forfatter
    ved Dyphavsarter og bruskfisk ved Havforskningsinstituttet

Claudia Halsband

  • Tilknyttet:
    Forfatter
    ved Akvaplan Niva AS
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