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Life cycle environmental impacts of kelp aquaculture through harmonized recalculation of inventory data
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
RISE Research Institutes of Sweden, Bioeconomy and Health, Agriculture and Food.ORCID iD: 0000-0003-0814-5258
RISE Research Institutes of Sweden, Bioeconomy and Health, Agriculture and Food.ORCID iD: 0000-0003-1995-2338
2024 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 450, article id 141987Article in journal (Refereed) Published
Abstract [en]

As seaweed farming gains prominence in future blue economies, scientifically robust environmental evaluations are vital. Harmonizing life cycle assessment (LCA) studies provides nuanced insights, allowing generalizations and potentially more accurate results than individual studies. This study recalculates life cycle inventory (LCI) data to offer a comprehensive perspective on sugar kelp Saccharina latissima. The findings affirm and validate previous studies, emphasizing critical hotspots such as fuel use for boats at sea, impacts from the use of plastic ropes, buoys and metal components at sea, and electrical energy use in the hatchery. The overall environmental impacts of seaweed farming remain relatively low compared to other seafood and biomass sources. The study also highlights the importance of how fuel use is modelled for the outcome. While harmonization enhances certainty and facilitates robust comparisons, challenges arise from the lack of standardized methods for data collection and reporting, along with data gaps between studies. Addressing these limitations calls for standardized protocols and improved data sharing practices in the field. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2024. Vol. 450, article id 141987
Keywords [en]
Aquaculture; Environmental impact; Farms; Seaweed; Blue bioeconomy; Fuel use; Harmonisation; Inventory data; Kelp; Life cycle assessment; Life Cycle Inventory; Life cycle inventory harmonization; Life-cycle environmental impact; Seaweed farming; Life cycle
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:ri:diva-72836DOI: 10.1016/j.jclepro.2024.141987Scopus ID: 2-s2.0-85189093783OAI: oai:DiVA.org:ri-72836DiVA, id: diva2:1854896
Funder
Swedish Research Council Formas, 2020-02834Swedish Research Council Formas, 2020-03113
Note

This work was supported by the Swedish Research Council FORMAS [grant numbers 2020-03113 and 2020-02834]

Available from: 2024-04-29 Created: 2024-04-29 Last updated: 2024-04-29Bibliographically approved

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Hornborg, SaraZiegler, Friederike

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