Sea, Norway, there are high biomasses of deep-water sponges. Due to the large amount of water that they filter daily, spongesĪre an important link between benthic and pelagic ecosystems. Sponges often dominate deep-water benthic faunal communities and can comprise Recommendations and perspectives Shifting to creeling and species-selective trawling would lead to considerably lower discard, fuel use, and seafloor impact while providing consumers with the same amount of Norway lobsters. The study demonstrates how LCA can be used to compare the envi-ronmental performance of different segments of a fishery. Conclusions Improvement options were identified and quantified for the Swedish Nephrops fishery. However, these issues could be handled by technological development and fisheries regulations and should not hamper the development of creel fishery. The only deficiencies of creel fishing were poorer working environment and safety, and a potentially higher risk of recruitment overfishing.
Discussion Major improvement potential was identified in the more widespread use of creels and species-selective trawls. Since the quality of the creel-caught Nephrops was higher, the difference was probably even higher than indicated here. Results Major differences were found between the fishing methods with regard to environmental impact: creeling was found to be more efficient than conventional trawling in all traditional impact categories and in the two additional fishery-related categories involving seafloor impact and discarding. The seafloor impact of trawling was quantified using a recently developed methodology. The functional unit was 300 g of edible meat (i.e., Norway lobster tails), corresponding to 1 kg of whole, boiled Norway lobsters. That portion of the life cycle occurring on land was assumed to be identical for Norway lobsters regardless as to how they were caught. Materials and methods The inventory covered the entire chain starting by production of supply materials and the fishery itself, through seafood auctioning, wholesaling, retailing, to the consumer. The goal was to evaluate overall resource use and environmen-tal impact caused by production of this seafood with the two different fishing methods using life cycle assessment (LCA) methodology. Environmental life cycle assessment of Norway lobster (Nephrops norvegicus) caught along the Swedish west coast by creels and conventional trawls-LCA methodology with case study Abstract Background, aim, and scope Two fishing methods, creeling and conventional trawling, are used to target Norway lobster (Nephrops norvegicus), economically the second most important species in Swedish west coast fisheries.
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