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Publications (10 of 45) Show all publications
Morgan, L., Valentinsson, D., Dahlgren, T. G. & Hornborg, S. (2024). Ecological risk assessment of invertebrates caught in Swedish west-coast fisheries. Fisheries Research, 274, Article ID 106982.
Open this publication in new window or tab >>Ecological risk assessment of invertebrates caught in Swedish west-coast fisheries
2024 (English)In: Fisheries Research, ISSN 0165-7836, E-ISSN 1872-6763, Vol. 274, article id 106982Article in journal (Refereed) Published
Abstract [en]

Ecological risk assessments are important as scientific support for the implementation of ecosystem-based fisheries management. Marine invertebrates are important to ecosystem structure and function and may be sensitive to fishing pressure. Some are also of increasing commercial value – but have hitherto not been paid much attention to in ecological risk assessments. Here, catches of invertebrates in Swedish west-coast fisheries with demersal trawls and creels are examined from an ecological risk assessment perspective. It is found that few non-commercial invertebrate species have been regularly recorded in onboard observer programs. Furthermore, for being a comparatively well-studied area, it is striking to find that out of the 93 species included, 56% could be classified as data deficient in terms of known attributes needed to perform basic ecological risk assessments. This implies that there is little or no available information on the basic life history traits important for estimating productivity. Additionally, onboard observer data for invertebrates are inadequate beyond targeted commercial species for robust statistical analysis on volumes generated over time and between fisheries. However, over 18% of the studied species are categorized as red-listed on the Swedish IUCN Red List. Combined with the few records available in observer data programs, the study illustrates the need to pay more attention to marine invertebrates in fisheries monitoring programs and research, especially bycaught and non-commercial invertebrate species.

Place, publisher, year, edition, pages
Elsevier B.V., 2024
National Category
Ecology
Identifiers
urn:nbn:se:ri:diva-72844 (URN)10.1016/j.fishres.2024.106982 (DOI)2-s2.0-85186970522 (Scopus ID)
Available from: 2024-04-29 Created: 2024-04-29 Last updated: 2024-04-29
Bergman, K., Woodhouse, A., Langeland, M., Vidakovic, A., Alriksson, B. & Hornborg, S. (2024). Environmental and biodiversity performance of a novel single cell protein for rainbow trout feed. Science of the Total Environment, 907, Article ID 168018.
Open this publication in new window or tab >>Environmental and biodiversity performance of a novel single cell protein for rainbow trout feed
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2024 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 907, article id 168018Article in journal (Refereed) Published
Abstract [en]

Seafood has an important role to play to achieve a sustainable food system that provides healthy food to a growing world population. Future seafood production will be increasingly reliant on aquaculture where feed innovation is essential to reduce environmental impacts and minimize feed and food competition. This study aimed to investigate whether a novel single cell protein feed ingredient based on Paecilomyces variotii grown on a side stream from the forest industry could improve environmental sustainability of farmed rainbow trout (Oncorhynchus mykiss) by replacing the soy protein concentrate used today. A Life Cycle Assessment including commonly addressed impacts but also the rarely assessed biodiversity impacts was performed. Furthermore, feeding trials were included for potential effects on fish growth, i.e., an assessment of the environmental impacts for the functional unit ‘kg feed required to produce 1 kg live-weight rainbow trout’. Results showed that the best experimental diet containing P. variotii performed 16–73 % better than the control diet containing soy protein concentrate in all impact categories except for energy demand (21 % higher impact). The largest environmental benefits from replacing soy protein with P. variotii in rainbow trout diets was a 73 % reduction of impact on biodiversity and halved greenhouse gas emissions. The findings have high relevance for the aquaculture industry as the production scale and feed composition was comparable to commercial operations and because the effect on fish growth from inclusion of the novel ingredient in a complete diet was evaluated. The results on biodiversity loss from land use change and exploitation through fishing suggest that fishery can dominate impacts and exclusion thereof can greatly underestimate biodiversity impact. Finally, a novel feed ingredient grown on side streams from the forest industry has potential to add to food security through decreasing the dependence on increasingly scarce agricultural land resources. 

Place, publisher, year, edition, pages
Elsevier B.V., 2024
Keywords
Environmental impact; Fish; Fish products; Fisheries; Food supply; Forestry; Gas emissions; Greenhouse gases; Land use; Life cycle; Proteins; Sustainable development; Ecosystem quality; Feed ingredients; Filamentous fungus; Forest industry; LCA; Oncorhynchus mykiss; Paecilomyces variotii; Rainbow trout; Side streams; Single cell proteins; biodiversity; cell; environmental impact; life cycle analysis; performance assessment; protein; Biodiversity
National Category
Earth and Related Environmental Sciences
Identifiers
urn:nbn:se:ri:diva-67952 (URN)10.1016/j.scitotenv.2023.168018 (DOI)2-s2.0-85175487605 (Scopus ID)
Note

This work resulted from the SALMONAID project supported by Vinnova (grant number 2016-03351 ) and the Blue Food Center funded by FORMAS (grant number 2020-02834 ). 

Available from: 2023-11-27 Created: 2023-11-27 Last updated: 2023-12-05Bibliographically approved
Thomas, J.-B. E., Ahlgren, E., Hornborg, S. & Ziegler, F. (2024). Life cycle environmental impacts of kelp aquaculture through harmonized recalculation of inventory data. Journal of Cleaner Production, 450, Article ID 141987.
Open this publication in new window or tab >>Life cycle environmental impacts of kelp aquaculture through harmonized recalculation of inventory data
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
Keywords
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:nbn:se:ri:diva-72836 (URN)10.1016/j.jclepro.2024.141987 (DOI)2-s2.0-85189093783 (Scopus ID)
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
Scherrer, K., Langbehn, T., Ljungström, G., Enberg, K., Hornborg, S., Dingsør, G. & Jørgensen, C. (2024). Spatial restrictions inadvertently doubled the carbon footprint of Norway's mackerel fishing fleet. Marine Policy, 161, Article ID 106014.
Open this publication in new window or tab >>Spatial restrictions inadvertently doubled the carbon footprint of Norway's mackerel fishing fleet
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2024 (English)In: Marine Policy, ISSN 0308-597X, E-ISSN 1872-9460, Vol. 161, article id 106014Article in journal (Refereed) Published
Abstract [en]

The ocean is increasingly used for industry, energy and recreation or protected for conservation, resulting in increasing spatial restrictions for fisheries. Simultaneously, producing seafood with a low climate footprint is becoming increasingly important. Despite this, the effects of spatial restrictions on the emissions of fishing fleets are poorly known. In the Northeast Atlantic, the withdrawal of the United Kingdom from the EU (Brexit) meant that the UK regained autonomy in its Exclusive Economic Zone (EEZ). This suddenly imposed a spatial restriction for several foreign fishing fleets targeting Northeast Atlantic mackerel (Scomber scombrus). Here, we use this natural experiment and open fisheries data to investigate how Brexit affected the performance and emissions of the Norwegian mackerel fishery. As the fleet was excluded from fishing grounds in the UK, the catch per fishing trip almost halved, while the number of trips per vessel doubled. As a result, fuel use intensity (FUI) more than doubled from ∼0.08 to ∼0.18 L fuel per kg mackerel. We estimate that this shift required an additional 23 million liters of fuel per year, causing additional fuel costs of ∼€18 million annually and emitting an additional ∼72,000 tonnes CO2 per year. The policy change undid ∼15 years of improved fuel efficiency in Norwegian pelagic fisheries. These findings provide rare empirical evidence on how spatial restrictions can undermine progress towards decreasing greenhouse gas emissions in fisheries, highlighting the need to monitor and account for emissions in fisheries management and consider these trade-offs in marine spatial management. 

Place, publisher, year, edition, pages
Elsevier Ltd, 2024
Keywords
Blue food, Climate mitigation, Fisheries management, Forage fish, Greenhouse gas emissions, Marine spatial planning, Multinational resource management, Transboundary stocks, Norway, autonomy, carbon emission, carbon footprint, European Union, fish, fishery management, greenhouse gas, pelagic fishery, policy analysis, resource management, spatial analysis, spatial planning
National Category
Agricultural Science, Forestry and Fisheries
Identifiers
urn:nbn:se:ri:diva-71957 (URN)10.1016/j.marpol.2024.106014 (DOI)2-s2.0-85184515232 (Scopus ID)
Funder
The Research Council of Norway, 326896
Note

This work is funded by the Norwegian Research Council , project 326896 

Available from: 2024-02-26 Created: 2024-02-26 Last updated: 2024-02-26Bibliographically approved
Hornborg, S., Axelsson, A. F. & Ziegler, F. (2023). Driver svensk konsumtion av odlad lax ökat svenskt industrifiske i Östersjön?.
Open this publication in new window or tab >>Driver svensk konsumtion av odlad lax ökat svenskt industrifiske i Östersjön?
2023 (Swedish)Report (Other academic)
Abstract [en]

Does Swedish consumption of farmed salmon drive increase in industrial fisheries in the Baltic Sea?

Swedish fishing in the Baltic Sea with large vessels to produce fish meal and oil, and the deteriorating conditions for small-scale fishing and herring stocks, has in recent years been heavily debated in media. A link between current large-scale fishing and Swedish consumption of Norwegian salmon is often made, i.e., that Norwegian salmon farming is a driver behind the recent development. The Swedish Fishing Industry Association has therefore commissioned this report with the aim to improve current knowledge. The overarching questions are whether i) there is a dependency, and ii) if Norwegian salmon farming can be considered a driver for Swedish large-scale fishing of herring in the Baltic Sea. It is found that the development from the 1950s needs to be taken into account to fully understand today's situation. The current Swedish fishing fleet in the Baltic Sea is in line with national fisheries’ objectives to make pelagic fishing more efficient, and the development of stocks is in turn governed by the EU Common Fisheries Policy – both independent to both Swedish consumption and Norwegian salmon farming. Several factors affect destination of landings, where an important aspect is quality of the catch. Current fishing pattern, with fewer and larger boats, have resulted in considerably larger landing volumes per vessel – compromising opportunities for processing for direct consumption. The exact link between Swedish fisheries and Norwegian salmon farming is however complicated. The different traceability systems for fish caught for feed versus direct consumption are not integrated, although detailed information "one step forward, one step back" is available from individual actors. This challenge an effective tracing of a certain fish volume caught for fish meal and oil production to the final use. Overall, available data find that the total share of herring (from all waters) in one kilo Norwegian salmon feed is small (3.77%), and a very small fraction is based on fisheries directly destined for fish meal and oil production (0.8%) – the largest share is based on trimmings from processing for direct consumption. However, most of the Swedish landings of herring from the Baltic Sea is directly destined for fishmeal and oil production in Denmark. The largest share of the total production in Denmark goes to aquaculture, mainly to Norway. Conclusions are that i) Norwegian salmon farming does not appear to use herring from the Baltic Sea to a large extent, although a large share of the fish meal and oil production from the Baltic Sea are destined to aquaculture, and ii) it is the fisheries management (EU and Swedish) that has shaped the fishing that exists today by creating the basic conditions. The report concludes with recommendations for follow-up measures to reduce conflict between fishing for feed and direct consumption, and to better ensure full traceability even for fish intended for feed production.

Publisher
p. 42
Series
RISE Rapport ; 2023:100
Keywords
herring, Baltic Sea, fishmeal, fish oil, salmon, fisheries
National Category
Fish and Aquacultural Science
Identifiers
urn:nbn:se:ri:diva-67755 (URN)978-91-89821-78-1 (ISBN)
Note

Fiskbranschens Riksförbund (FR) har gett RISE i uppdrag att göra en kartläggning av var det svenska fiskets fångster från Östersjön tar vägen samt eventuella orsaker bakom. 

Available from: 2023-11-15 Created: 2023-11-15 Last updated: 2024-03-01Bibliographically approved
Hornborg, S., Bianchi, M. A., Thomas, J.-B., Wocken, Y., Axelsson, A. F., Sanders, C., . . . Ziegler, F. (2023). Environmental and nutritional perspectives of algae.
Open this publication in new window or tab >>Environmental and nutritional perspectives of algae
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2023 (English)Report (Other academic)
Abstract [en]

Algae have gained increasing attention as promising food from both an environmental and nutritional perspective. However, current understanding is still limited. This report summarizes the status of knowledge for this emerging sector, focusing on micro- and macroalgae species most relevant for Europe (particularly Sweden). Environmental impacts, with focus on climate, are evaluated through literature reviews and analysis of existing life cycle assessments (LCAs), and nutritional potential in the form of data compilation and calculation of nutrient density scores. Overall, findings reveal that current data is incomplete and of poor representativeness. Most LCAs are not performed on commercial production, but at pilot or experimental scale, why often only indicative drivers for greenhouse gas emissions may be identified. For microalgae, there is a wide diversity of production systems in different conditions across the globe. Based on the data at hand, energy use is a key hotspot across most studies for this production, driven by the requirements of different types of systems and species, and to location. For macroalgae production, despite poor representativeness of especially green and red macroalgae, key aspects for minimizing greenhouse gas emissions are associated with energy consumption and use of materials for farming such as ropes. No LCA exists on wild harvested macroalgae, representing the largest production volume in Europe (>95%); large-scale wild harvest may also be associated with risks to ecosystems unless suitable management is enforced. Significant data gaps also exist in food composition databases regarding nutrient and heavy metal content in algae (e.g., vitamins and omega-3 fatty acids). When available, nutrient content was found to be highly variable within and across species, but overall, the evaluation of nutritional quality indicated that algae may be a considerable source of minerals and vitamin B12. The contribution of fiber and protein is generally minimal in a 5 g dry weight portion of macroalgae; microalgae may have higher protein content, and also fat. However, excessive amounts of iodine and several heavy metals may be represented even in very small amounts of unprocessed macroalgae. In summary, the suggested potential of farmed algae as a sustainable food resource is overall strengthened by its generally low carbon footprint during production compared to other food raw materials. However, more input data are needed to fill data gaps regarding both environmental impacts and nutrient quality, and effects from different processing, as well as improved understanding of nutrient and contaminant bioavailability. Pending further research, careful considerations of risks and benefits associated with algae production and consumption should be applied.

Publisher
p. 54
Series
RISE Rapport ; 2023:84
Keywords
algae, carbon footprint, environmental impact, nutrition, contaminants
National Category
Environmental Sciences
Identifiers
urn:nbn:se:ri:diva-66707 (URN)978-91-89821-57-6 (ISBN)
Note

This report represents an output of the research project ‘The role of algae in sustainable food systems- a knowledge synthesis of the nutritional quality and environmental impact’, funded by the Swedish Research Council Formas (grant 2020-03113).

Available from: 2023-09-11 Created: 2023-09-11 Last updated: 2024-03-26Bibliographically approved
Hornborg, S. (2023). Follow the herring – A case study on the interplay between management and markets for marine resource utilization. Marine Policy, 158, Article ID 105874.
Open this publication in new window or tab >>Follow the herring – A case study on the interplay between management and markets for marine resource utilization
2023 (English)In: Marine Policy, ISSN 0308-597X, E-ISSN 1872-9460, Vol. 158, article id 105874Article in journal (Refereed) Published
Abstract [en]

Seafood offers opportunities for more sustainable diets through having a generally high nutritional value at lower environmental pressures relative to other animal protein. Opportunities for, and challenges of, seafood production and consumption are however context dependent. Here, a case study of Swedish fisheries for Atlantic herring Clupea harengus in the Baltic Sea is added to the scientific discourse. Motivated from a heated public debate in Sweden, the purpose is to provide a first sustainability assessment of current value chains: direct consumption versus fish meal and oil production. The case study highlights the importance of taking a value chain perspective for seafood from capture fisheries – i.e., the prerequisites, constraints and opportunities for different actors – and pay attention to misaligned economic incentives that may conflict sustainable use. Although lower greenhouse gas emissions, higher nutritional value, more affordable seafood for consumers and higher economic value for fishermen may be achieved by direct consumption of herring, several challenges exist. These include above all an urgent need to safeguard sustainable and equitable fisheries exploitation; current management is increasingly eroding opportunities for value chains producing herring for food. It is also vital with realistic expectations; redirecting more herring to direct consumption also requires strategies for how potential health risks can be reduced and consumer interest could increase. Overall, the study illustrates net-effects on marine resource utilization from interplay between actors along the value chain in various ways – with implications and insights of importance for a long-term sustainable Blue Economy. 

Place, publisher, year, edition, pages
Elsevier Ltd, 2023
Keywords
Atlantic Ocean; Baltic Sea; dietary intake; fishery management; health risk; marine resource; protein; seafood; sustainable development
National Category
Food Science Environmental Sciences Fish and Aquacultural Science
Identifiers
urn:nbn:se:ri:diva-67716 (URN)10.1016/j.marpol.2023.105874 (DOI)2-s2.0-85173479939 (Scopus ID)
Funder
Mistra - The Swedish Foundation for Strategic Environmental Research, DIA 2018/24 #8Swedish Research Council Formas, 2016–00227
Note

The work was supported by Mistra Food Futures (DIA 2018/24 #8), a research program funded by Mistra (The Swedish foundation for strategic environmental research), and the Swedish Research Council Formas (grant 2016–00227). The Swedish Pelagic Federation (SPF) and Marine Ingredients Denmark is acknowledged for provisioning of data. The author also wants to acknowledge two colleagues for valuable input to the manuscript, Friederike Ziegler and Yannic Wocken.

Available from: 2023-11-06 Created: 2023-11-06 Last updated: 2023-11-16Bibliographically approved
Hornborg, S. & Axelsson, A. F. (2023). Hållbarhetsutvärderingar av sjömat i Sverige - nyckelfrågor för mer behovsbaserade verktyg.
Open this publication in new window or tab >>Hållbarhetsutvärderingar av sjömat i Sverige - nyckelfrågor för mer behovsbaserade verktyg
2023 (Swedish)Report (Other academic)
Abstract [en]

Sustainability assessments of seafood from capture fisheries – key issues for a more needs-based tool

Defining what may be seen as sustainable seafood is complex – there is a multitude of aspects and production systems to consider. As a response to this challenge, several market-based assessments exist today with the aim to simplify and support promotion of sustainable seafood. In Sweden, the most important ones are the WWF Sustainable Seafood Guide, the certification Marine Stewardship Council (MSC) and the Swedish label for organic food (KRAV). Due to challenges identified with these existing assessments, companies may also have their internal assessments. One example is the company Orkla who has done their own seafood sustainability assessment since 2009. To secure a long-term sustainable seafood sector in Sweden, there is a need for improved understanding of the different tools, and if and how a more needs-based tool could be developed for the industry in Sweden. The purpose of this report is to provide an overview of the different tools, gather input from actors along the value chain on their needs and provide a basis for discussion on alternative paths ahead. Overall, the report finds both similarities and differences between the tools. Mixed messages are conveyed for the same products when assessed by the different tools, highlighting current challenges for value chain actors, and examples are provided where and how differences may arise. To this end, current situation cause confusion for companies who want to set their sustainability targets related to sustainable seafood. Cost-effectiveness could also be improved by increased collaboration, but it is unclear how this best may be achieved.

Publisher
p. 45
Series
RISE Rapport ; 2023:102
Keywords
certification, seafood, sustainability, fisheries
National Category
Environmental Sciences
Identifiers
urn:nbn:se:ri:diva-67557 (URN)978-91-89821-81-1 (ISBN)
Note

Blå mat – centrum för framtidens sjömat har till syfte att ta vara på den enorma potential som finns i produktion av näringsriktig mat från svenska vatten och därmed göra Sverige till en ledande producent av hållbar sjömat. I centrumbildningen samlas akademiska parter (universitet och forskningsinstitut) samt externa parter (företag, regioner och organisationer verksamma inom sjömatssektorn). Genom nationella samarbeten ska innovativa cirkulära lösningar, ökad kunskap och stärkt marknad utvecklas – och därmed skapa förutsättningar för en långsiktig och bärkraftig produktion av sjömat.Hållbar sjömat är ett ledord för Blå mat. Medel avsatta för satellitprojekt ska stimulera behovsbaserad forskning och samverkan. Projektteamen ska bestå av minst en akademisk och minst en extern partner från Blå mats partnerskap. Denna rapport är resultatet av ett projekt finansierat av dessa medel och har utförts av RISE i samarbete med Orkla Foods Sverige.

Available from: 2023-10-23 Created: 2023-10-23 Last updated: 2024-03-01Bibliographically approved
Axelsson, A. F., Ziegler, F. & Hornborg, S. (2023). Metod för beräkning av svensk sjömatskonsumtion.
Open this publication in new window or tab >>Metod för beräkning av svensk sjömatskonsumtion
2023 (Swedish)Report (Other academic)
Abstract [en]

Method for calculation of Swedish seafood consumption

Robust statistics on how much and which seafood is consumed in Sweden are important for calculations of intake of both desired and undesired substances through seafood, as well as for mapping and forecasting the environmental footprint generated by consumption. Based on three previous reviews summarizing production and trade statistics to estimate Swedish seafood consumption per species and production method (fishing/ aquaculture), a method has been developed for calculating seafood consumption. Previous reports have provided valuable insights, since the Swedish Board of Agriculture does no longer publish data on Swedish seafood consumption in the same way as for other foods. Focusing on the most recent review, which represents the current state of knowledge and the latest statistics, the purpose of this report is to describe in detail, step by step, the method used for calculating Swedish seafood consumption. The calculation is based on public statistics on the volume of imports, exports and production in aquaculture and fisheries, which when needed was complemented with information from other sources. The method description includes where data is found, how it is downloaded, processed, categorized and how the different datasets were later combined to provide an overall picture of Swedish seafood consumption. Finally, knowledge gaps and the need for supplementary data collection is described. The work on this report has revealed that there are still considerable deficiencies and data gaps in the public production and trade statistics. For instance, landings by foreign commercial fishing boats as well as landings of certain species in recreational fishing are not presented. Production data of certain species in aquaculture may also be lacking, due to confidentiality, and requires alternative strategies to be obtained. In addition, available statistics on herring and sprat are uncertain and difficult to interpret, which is why the calculation of these species requires special treatment. Due to its great importance in both production and consumption, the uncertainties surrounding these species represent an important source of error in the estimation of total consumption. Improvements in production and trade statistics of seafood are important for several reasons and it is important that a future method for public consumption statistics is harmonized with that used for other foods, to enable comparisons. Using alternative and varied ways to fill data gaps from year to year obstructs reliable calculations and comparisons – over time and with other product groups. To ensure a sustainable increase in seafood production and consumption, improved transparency through the whole value chain is of considerable importance – not the least to understand which seafood species that could increase in a sustainable way.

Publisher
p. 23
Series
RISE Rapport ; 2023:4
National Category
Food Science
Identifiers
urn:nbn:se:ri:diva-64283 (URN)978-91-89757-17-2 (ISBN)
Note

Arbetet med den här rapporten har utförts av RISE på uppdrag av Jordbruksverket.

Available from: 2023-04-06 Created: 2023-04-06 Last updated: 2024-03-01Bibliographically approved
Ziegler, F., Axelsson, A. F., Sanders, C. & Hornborg, S. (2023). Sverige och sjömaten: idag och i morgon. Kan vi samtidigt öka produktion, konsumtion och hållbarhet?. Swedish University of Agricultural Sciences
Open this publication in new window or tab >>Sverige och sjömaten: idag och i morgon. Kan vi samtidigt öka produktion, konsumtion och hållbarhet?
2023 (Swedish)Report (Other academic)
Alternative title[en]
Seafood in Sweden : today and tomorrow. Can we increase production, consumption and sustainability at the same time?
Abstract [sv]

Sjömat, beroende på art och produktionsmetod, har visat sig vara ett bra alternativ till framför allt rött kött ur både miljö- och hälsosynpunkt. Sverige har dock utvecklingsbehov vad gäller såväl konsumtion som produktion av sjömat – vi når idag inte upp till Livsmedelsverkets rekommendationom att äta 2–3 portioner per vecka, vi håller oss till få arter och importerar dessutom omkring 75% av den sjömat vi äter. Att undersöka utvecklingspotentialen för svensk sjömatssektor är med andra ord högst relevant, inte minst mot bakgrund av den svenska livsmedelsstrategin som bl a syftar tillökad inhemsk produktion och försörjningskapacitet. Det är också viktigt att utvecklingen sker inom de delar av sektorn som är mest hållbara. Detta innebär exempelvis att fiskets fångster inte kan öka,utan i stället bör användas mer effektivt än idag. Syftet med den här rapporten är att kartlägga miljöavtrycket av dagens produktion och konsumtion av sjömat och modellera framtidsscenarier för 2030 och 2045. Tanken är att ge en bild av hur det skulle kunna se ut, genom att kombinera pågående och önskvärda trender kring sjömat, snarare än att försöka ge en exakt bild av hur framtiden kommer att bli. Rapporten är främst tänkt att utgöra ett diskussionsunderlag för vad som behöver göras för att nå dit. Vi undersöker också om det finns förutsättningar att kunna tillgodose Sveriges befolkningmed sjömat enligt rekommendationerna, samtidigt som klimatavtrycket minskar. För de arter som dominerar dagens produktion respektive konsumtion identifierades de viktigaste produktionsteknikerna och bästa tillgängliga data för klimatavtrycket av dessa. För produktionen vägdes även potentiell övergödning samt påverkan på bestånd och bottenhabitat in och diskuterades semi-kvantitativt/kvalitativt. Framtidsscenarierna baserades sedan på fyra åtgärderför att öka produktionen och/eller minska klimatavtrycket: 1) ökat vattenbruk, 2) ökad användning av pelagisk fisk till livsmedel, 3) ökad användning av sidoströmmar från fiskberedning till livsmedelsamt 4) minskat klimatavtryck och bränsleåtgång inom fisket bl a genom mer hållbar förvaltning. För att modellera framtida konsumtion antogs att fördelningen mellan huvudtyper av sjömat, t ex vitfisk och laxfisk, var liknande, men att efterfrågan på de mest klimatsmarta alternativen inom varje grupp ökade. Analysen visar att det totala klimatavtrycket och övergödningspotentialen ökar när större volymer produceras, liksom klimatavtrycket per kilo med den sammansättning som är vald. Närsaltsutsläpp med potentiell övergödande effekt ökar både totalt och per kg p g a ökad produktion av kassodlad fisk. Vad gäller konsumtion innebär en växande inhemsk produktion i kombinationmed en förändrad sammansättning inom och mellan sjömatskategorier att vi kan nå upp till Livsmedelsverkets rekommendationer, samtidigt som sjömatskonsumtionens totala klimatavtryckminskar. Dessutom kan utveckling av teknik och foder leda till ytterligare förbättringar som vi idag inte kan förutse, men det kan också ske försämringar p g a klimatförändringarna. Det finns således teoretiska förutsättningar att öka både produktion och konsumtion till nivåer som ligger i linje med nationella behov och rekommendationer, och samtidigt minska klimatavtrycket per kg sjömat konsumerad. För att realisera detta krävs breda och målinriktade samarbeten mellan myndigheteroch näring, hållbara inköpsstrategier samt långsiktigt hållbar förvaltning av fisket. Det finns många fördelar med att öka den inhemska produktionen, men trots kortare transporter är svenskproducerad sjömat inte per definition mer hållbar än importerad – det viktigaste är hur den är producerad. Det finns även behov av att utveckla vad som kännetecknar mervärden kring svensk sjömat. Ur perspektivet hållbara dieter är det dessutom viktigt att se till helheten, dvs även vilka produkter den nya sjömaten ersätter.

Abstract [en]

Seafood, depending on species and production method, has generally proven to be a good alternative to especially red meat from both an environmental and health perspective. However, Sweden is lagging behind in terms of both consumption and production of seafood – we do not reach the Swedish Food Agency’s dietary advice of having 2-3 portions per week, we eat only few species and import around 75% of the seafood consumed. In other words, investigating the development potential for the Swedish seafood sector is highly relevant, not the least in light of the national food strategy, where one aim is to increase domestic food production. It is also important to allow for sustainable development of the sector, which for instance means that catches cannot increase but should be used more effectively. The purpose of this report is to map the environmental footprint of current seafood production and consumption and model future scenarios for 2030 and 2045. Rather than trying to reflect the definite future, the idea is to show what it could look like, by combining ongoing and desirable trends regarding seafood. The report is primarily intended as a basis for discussions of what needs to be done to reach the desired future situation. We also investigate if we, through increased production, will be able to supply Sweden with seafood in accordance with the national recommendations, while reducing the climate impact. For species dominating Swedish production and consumption today, the most important production techniques and best available data of greenhouse gas (GHG) emissions of these were identified. Eutrophication potential and impact on fish stocks and bottom habitats from production were also weighed in and discussed semi-quantitatively/qualitatively. The future scenarios were then based on possible measures to increase production and/or reduce the climate impact: 1) increased aquaculture, 2) increased use of pelagic fish for human consumption, 3) increased use of side streamsfrom fish processing for human consumption, and 4) reduced climate impact and fuel consumptionin fishing partly through more sustainable management. To model future consumption and imports, it was assumed that distribution between main types of seafood, e.g. whitefish and salmonids, remain similar, but that demand for the most climate-efficient alternatives within each group will increase.Total climate and eutrophication potential increases with larger production and so does climateimpact per kg seafood produced with the chosen composition. Nutrient emissions, that may causeeutrophication, increase both in total and per kg due to increasing netpen production of fish. In terms of consumption, it appears that a growing domestic production combined with changed composition within and between seafood categories, together with the growing domestic production, makes it possible to reach the Swedish Food Agency’s recommendations – while reducing the GHG emissions of consumption. In addition, development of feed and technology may lead to further improvements that we cannot foresee today, although climate change also can affect production. Opportunities do exist to increase both production and consumption to levels in line with nationalneeds and recommendations, while reducing GHG emissions per kg seafood consumed. To make this happen, broad and goal-oriented collaborations between authorities and industry, sustainable sourcing strategies as well as a long-term sustainable management of Swedish fisheries is required. Increasing domestic production comes with multiple benefits, but despite shorter transports, Swedish seafood is not by definition more sustainable than imported – the most important aspectalso for Swedish seafood is how it is produced. What characterizes added values of Swedish seafood also need to be developed, and a holistic perspective is essential, i.e. considering what products new seafood is replacing.

Place, publisher, year, edition, pages
Swedish University of Agricultural Sciences, 2023. p. 43
Series
Mistra Food Futures ; 17
Keywords
seafood, Sweden, production, consumption, sjömat, Sverige, produktion, konsumtion
National Category
Food Science
Identifiers
urn:nbn:se:ri:diva-68606 (URN)978-91-8046-874-9 (ISBN)978-91-8046-873-2 (ISBN)
Funder
Mistra - The Swedish Foundation for Strategic Environmental Research
Available from: 2023-12-15 Created: 2023-12-15 Last updated: 2024-03-01
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-0814-5258

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