Assessing the mechanical properties of biobased versus fossil-based ropes and their impact on the productivity and quality of mussel (Mytilus galloprovincialis) in longline aquaculture: Toward decarbonization

Aquaculture, Год журнала: 2024, Номер 588, С. 740919 - 740919

Опубликована: Апрель 4, 2024

The expansion of offshore mussel aquaculture is intertwined with the rising demand for grow-out ropes. Currently, these ropes are manufactured using fossil-fuel based or fossil-based plastics. In response to concerns about plastic pollution and sustainable practices, biobased materials have emerged as more alternatives. Yet, importance choice raw materials, well methods used in their production sourcing, key determining performance sea conditions within context aquaculture. This study evaluated functionality terms productivity durability, comparing them counterparts during a one-year culture conditions. Across culture, noteworthy losses were observed (65%) compared B1 (53%) B2 (18%) prototype ropes, yielding 85% 23% (kg/ m rope) than Moreover, higher correlations shell length body weight over time suggesting that may be suitable substrates growth structural distinction between round uniform fine multifilaments opposed clustered structure flat fibres contributed effective surface area initial attachment seeded mussels, avoiding subsequent losses. use positively interplay substrate structure, biofouling, attachment, which guiding further designs gears. Despite seasonal variations, final condition, proximate fatty acid composition indicated marketability high nutritional quality. Higher yields observed, indicating potential mussels cultivated on especially B2, reach market value. Regarding linear density remained unaltered after culture. rope showed highest ratio retention mechanical properties (Load at Break elongation) total held one year. findings this validate most promising alternative It significantly boosted high-quality while maintaining durability throughout year These results hold promise reducing reliance aquaculture, thereby contributing decarbonization efforts.

Язык: Английский

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Marine plastic pollution: A systematic review of management strategies through a macroscope approach

Marine Pollution Bulletin, Год журнала: 2024, Номер 208, С. 117075 - 117075

Опубликована: Окт. 2, 2024

Язык: Английский

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Aquaculture growth and coastal tourism development in the context sustainable blue economy

Sustainable Development, Год журнала: 2024, Номер unknown

Опубликована: Окт. 6, 2024

Abstract The primary objective of this research is to investigate the impact increased aquaculture output on coastal tourism and blue growth in European Union developed countries (EU13) developing (EU14) from 1990 2023. Key findings were derived through application resilient least squares (RLS), two‐stage (2SLS), ordinary (OLS) estimators, effectively addressing endogeneity concerns. exact magnitudes these results show that, EU14 countries, increase seriously jeopardizes sustainability more so than EU13 countries. In contrast, find that variables like as economic institutional quality have a greater improving sustainable development do Moreover, data shows comparison sector uses fossil fuels which main driver carbon dioxide emissions tourist areas. light findings, study recommends policymakers give policies targeted at enhancing productivity encouraging environmentally friendly production top priority, particularly significant negative effects tourism.

Язык: Английский

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Reducing plastic pollution caused by demersal fisheries

Marine Pollution Bulletin, Год журнала: 2023, Номер 196, С. 115634 - 115634

Опубликована: Окт. 7, 2023

Marine microplastics generated by wear and tear of bottom trawls demersal seines during their service life is a growing environmental concern that requires immediate attention. In Norway, these fishing gears account for more than 70 % the landings fish species, but they are also leading sources fisheries. Because two widely used around world, replacing fossil-based non-degradable plastics with abrasion-resistant materials, including biodegradable polymers, should contribute to reduction marine litter its associated impacts. However, lack available recycling techniques need separate collection polymers means materials will most likely be incinerated energy recovery, which not favourable from circular economy perspective. Nonetheless, an perspective use such in fisheries could still better alternative standard polymer materials.

Язык: Английский

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Degradation of plastic materials in the marine environment: A mussel farm as a case study for the development of alternative mussel nets

Journal of Cleaner Production, Год журнала: 2024, Номер 450, С. 141825 - 141825

Опубликована: Март 25, 2024

Currently, mussel farming uses of traditional plastic nets that accumulate on beaches and the seabed in event breakage accidental dispersion, contributing to marine litter issue. An attempt is being made replace polypropylene with alternative materials make aquaculture full production cycle more sustainable. However, need be characterised both functionally environmentally. This article describes a characterisation study which were exposed for approximately three years environment bay dedicated provide data degradation behaviour selected polymers eco-design purposes. Samples different materials, form 3-mm thick dumbbells, placed at depth 12 m water column 2 below sea surface. At time periods (after 6, 15, 24, 32 months), samples recovered, their mass thickness measured, mechanical properties characterised. The results lead identification some as sufficiently resistant deterioration therefore possible candidates application. Other generally used bags films showed very fast do not seem meet performance requirements farming. methodology this seems suitable conducting long-term exposure tests locations interest collecting specific purposes before application product markets.

Язык: Английский

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Variations of aquaculture structures, operations, and maintenance with increasing ocean energy

Frontiers in Aquaculture, Год журнала: 2024, Номер 3

Опубликована: Окт. 31, 2024

Aquaculture in exposed and/or distant ocean sites is an emerging industry and field of study that addresses the need to improve food security along with challenges posed by expansion urban coastal stakeholders into nearshore sheltered marine waters. This move necessitates innovative solutions for this thrive high-energy environments. Some research has increased understanding physics, hydrodynamics, structural requirements enabling development appropriate systems. The blue mussel ( Mytilus edulis ), New Zealand green shell or lipped Perna canaliculus Pacific Oyster (Magallana gigas), are primary targets commercial bivalve aquaculture. Researchers members actively advancing existing structures developing new methodologies these alternative high-value species suitable such conditions. For macroalgae (seaweed) cultivation, as sugar kelp Saccharina latissimi oar weed Laminaria digitata sp. Ecklonia sp.), longline systems commonly used, but further needed withstand fully environments productivity efficiency. In finfish aquaculture, three design categories open net pens identified: flexible gravity pens, rigid megastructures, closed submersible pens. As aquaculture ventures more demanding environments, a concerted focus on operational efficiency imperative. publication considers progress relating aquaculture’s seas, particular cultivation bivalves, macroalgae, technologies developments.

Язык: Английский

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Circular bio‐economy in aquaculture

Reviews in Aquaculture, Год журнала: 2023, Номер 15(3), С. 944 - 946

Опубликована: Июнь 1, 2023

The way we produce our food is increasingly scrutinized and evaluated on its possible contribution to the global environmental changes world currently witnessing. Scientific evidence about negative effects of agriculture (including aquaculture) world's natural resources1-5 mounting. Food production considered as one most significant causes change.6, 7 planetary boundaries framework8, 9 offers a tool explore which extent are still operating within carrying capacity planet. In recent update,10, 11 six out nine were transgressed already. Even novel health threats such microplastics emerging.12, 13 Obviously, current bio-economy needs be revisited remain ‘safe space for future mankind’. A change circular bio-based economy focusing resource use efficiency minimizing impacts might prospective strategies achieve that goal. Muscat et al.14 presented five principles transform agro-food systems into bio-economy, example, safeguarding agro-ecosystems, avoiding waste, prioritizing biomass avoid food–feed–fuel competition, recycling by-products using renewable energy. Products and/or designed in they minimize their impact environment during whole lifetime. European Commission, Directorate-General Maritime Affairs Fisheries, al.15 Colombo Turchini16 transferred this idea area fisheries aquaculture framework economy, conceptualization design new appropriate systems, evaluating reuse wastes from fisheries/aquaculture, reducing equipment products sector exploring possibilities recycle. It all relates so-called three Rs, reduce, reuse, Reviews Aquaculture contributed already discourse circularity aquaculture. Roy al.17 provided virtual topical collection review articles published by between 2020 2021, together reflected some contemporary puzzles Following special issue (here), journal decided initiate physical entitled ‘Circular Bio-economy Framework Aquaculture’, proudly present today. was organized around four key processes circularity, designing (circular) aquacultural aquaculture, re-using materials biomasses. call papers, invited state-of-the-art reviews themes, fitting each above processes. With regard Conceptualizing called aquaponics, integrated multi-trophic etc.’. For topic, interesting emerged, relevant marine aquaculture,18 two inland aquaculture19 both.20, 21 Some lesser known approaches taken forefront Garibay-Valtez al.,20 Lothmann Sewilam,18 Zhao al.,21 while promising solutions wider industry perspective Marousek al.19 Reduce, stipulated ‘Reducing emissions footprints aquaculture’ complemented Arantzamendia al.22 feasibility innovations used emerging science field. Within process, further ‘Connecting research side streams (pharmaceutical, biofuel, etc.)’, theme. Yun al.23 how seaweed-farming waste could industrially lucrative. An review24 process ‘reduce’ reviewing resources would reduce land-use dependency Reuse, themes mentioned ‘valorization non-aquaculture ‘Improving safety issues emanating aquaculture’. Two reviews, nutrient at farm level25 another nutrients locked biomasses farm-to-fork level,26 showed several routes upcycling ecosystem human chain. latter paper reviewed also intricacies consumer acceptance, product quality, shelf life re-manufacturing certain pond RAS farmed fish. third review27 explored wastewater Recycling received submissions. ‘Plant microbial-based solutions’ ‘Food-feed conflicts feeds’. Altogether under block,11, 28-31 nicely summarizing relied biomass, decades ago till now. al.28 an overview blue foods have been fed concepts gradually aquafeed, leading potential candidates feeds. Wang al.32 transforming industrial gas edible through van Riel al.29 tackled ‘food-feed competition’ against background expected expansion. Ogburn al.30 substrate-based winner recycle bulk semi-refined agri-food biomass. Sunish co-authors31 gave naturally occurring, situ saprophytic microbes strengthening aquatic animal health. There topics where editors not receive enough submissions for. related ‘Systems-based thinking modeling’ ‘Energy emergy analysis models’. presents 15 papers prove well adopted community. now waiting widespread application these industry. cordially acknowledge immense help anonymous peer reviewers who helped us materialize issue. hope readers find thought-provoking.

Язык: Английский

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Issues and Needs for the Sustainable Development of Shellfish Farming in Italy

Aquaculture Journal, Год журнала: 2024, Номер 4(2), С. 55 - 75

Опубликована: Июнь 7, 2024

The Italian shellfish industry mainly comprises clams, mussels, and oysters. While clam production thrives Italy leads Europe, mussel farming faces economic challenges. Oyster is relatively new holds potential. Sustainable development crucial for meeting growing seafood demand while ensuring resource conservation food safety. This paper, part of the VALUE-SHELL project funded by Ministry Agriculture, Food Sovereignty Forests (MASAF) as support activities National Strategic Plan Aquaculture, combines desk research on structure public interventions using a collaborative approach involving stakeholder interviews focus groups with producers local entities to assess sector’s most compelling needs. process highlighted key challenges across following four sustainability pillars: environmental (global warming, predator control, pollution mitigation are critical concerns ecosystem balance); (increased costs limited diversification opportunities affect profitability); social (fear generational decline due training education poses threat industry’s future); institutional (lack dedicated aquaculture law fragmented governance hinder long-term planning). identifies policy bottlenecks hindering potential, caused not fully addressing producer strategies essential these future.

Язык: Английский

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Environmental impact of different Mediterranean technological systems for European sea bass (Dicentrarchus labrax) and Gilthead sea bream (Sparus aurata) farming

Aquacultural Engineering, Год журнала: 2024, Номер 107, С. 102457 - 102457

Опубликована: Авг. 15, 2024

Язык: Английский

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Rapid Growth in Greenhouse Gas Emissions from the Adoption of Industrial-Scale Aquaculture: The Pathway Towards a Blue Economy

Journal of the Knowledge Economy, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 9, 2024

Язык: Английский

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