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BookletGuidelines on assessing and minimizing the possible impacts from the use of non-indigenous species in aquaculture 2023
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No results found.This publication presents guidelines prepared and adopted by the GFCM to assess and minimize the possible impacts from the use of non-indigenous species in the Mediterranean and the Black Sea. Specifically, it identifies the guiding principles and minimum common criteria needed to minimize the potential adverse impacts of non-indigenous species on biodiversity, natural habitats, ecosystems and related ecosystem services. By recommending practical actions to stakeholders, these guidelines aim to create a common regional framework on aquaculture practices related to the use of non-indigenous species and provide decision-makers with a useful tool for policy development. -
Book (series)Review of jellyfish blooms in the Mediterranean and Black Sea 2013
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No results found.Gelatinous plankton is formed by representatives of Cnidaria (true jellyfish), Ctenophora (comb jellies) and Tunicata (salps). The life cycles of gelatinous plankters are conducive to bloom events, with huge populations that are occasionally built up whenever conditions are favorable. Such events have been known since ancient times and are part of the normal functioning of the oceans. In the last decade, however, the media are reporting on an increasingly high number of gelatinous plan kton blooms. The reasons for these reports is that thousands of tourists are stung, fisheries are harmed or even impaired by jellyfish that eat fish eggs and larvae, coastal plants are stopped by gelatinous masses. The scientific literature seldom reports on these events, so time is ripe to cope with this mismatch between what is happening and what is being studied. Fisheries scientists seldom considered gelatinous plankton both in their field-work and in their computer-generated model s, aimed at managing fish populations. Jellyfish are an important cause of fish mortality since they are predators of fish eggs and larvae, furthermore they compete with fish larvae and juveniles by feeding on their crustacean food. The Black Sea case of the impact of the ctenophore Mnemiopsis leydi on the fish populations, and then on the fisheries, showed that gelatinous plankton is an important variable in fisheries science and that it cannot be overlooked. The aim of this report is to review current knowledge on gelatinous plankton in the Mediterranean and Black Sea, so as to provide a framework to include this important component of marine ecosystems in fisheries science and in the management of other human activities such as tourism and coastal development. Fact sheets on the most important gelatinous plankters of the Mediterranean and Black Seas are included as an appendix. -
Book (series)Report of the twenty-fourth session of the Scientific Advisory Committee on Fisheries, FAO headquarters, Rome, Italy, 20–23 June 2023
General Fisheries Commission for the Mediterranean
2024Also available in:
No results found.This report presents the outcomes of the twenty-fourth session of the GFCM Scientific Advisory Committee on Fisheries. The Committee reviewed the work carried out during the 2022–2023 intersession, including in the context of the MedSea4Fish programme, and provided advice on the status of priority stocks and ecosystems and on potential management measures addressing key fisheries and vulnerable species in the Mediterranean. At the regional level, the Committee provided advice on: i) European eel, red coral and common dolphinfish fisheries in the Mediterranean; ii) minimum conservation reference size for GFCM priority species, including deep-water red shrimp and European hake at the regional level as well as small pelagics in the Adriatic sea and round sardinella in the eastern Mediterranean; and iii) the socioeconomic impacts of a potential extension of bottom trawling limits. With regard to small-scale fisheries, the Committee supported the need to revise the monitoring framework of the Regional Plan of Action for small-scale fisheries in the Mediterranean and the Black Sea. It discussed additional work in support of the GFCM, endorsing dedicated research programmes, including on recreational fisheries and on jellyfish in the Alboran Sea, as well as a draft regional plan of action to monitor and mitigate interactions between fisheries and vulnerable species in the Mediterranean and the Black Sea and identified further actions towards the implementation of standardized monitoring plans for fisheries restricted areas (FRAs) and the development of pilot studies to identify boundaries of known vulnerable marine ecosystems. It also discussed issues related to decarbonization and climate change, estimation of discards and fishing capacity. In line with the subregional approach, the Committee formulated advice on i) blackspot seabream in the western Mediterranean; ii) small pelagics in the Alboran Sea; iii) a FRA in the Cabliers Coral Mound Province; iv) Norway lobster, red mullet and striped red mullet in the central Mediterranean; v) round sardinella, small-scale fisheries and non-indigenous species in the eastern Mediterranean; and vi) small pelagics and key demersal stocks in the Adriatic Sea. Finally, the Committee agreed upon its workplan for 2023–2025.
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