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Book (series)Technical bookElasmobranchs of the mediterranean and black sea: status, ecology and biology, biographic analysis 2012
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No results found.The authors have compiled published information on taxonomy, distribution, status, statistics, fisheries, bycatch, biologic and ecologic parameters on age and growth, food and feeding habits, reproductive biology and stock assessment of elasmobranchs in the Mediterranean and Black Sea. This bibliographic analysis, through 661 papers dealing with elasmobranchs in the GFCM area, shows that cartilaginous species, including sharks, rays and chimaeras, are by far the most endangered group of marine fish in the Mediterranean Sea, with 31 species (40 percent of all) critically endangered, endangered or vulnerable. The biological characteristics of elasmobranchs (low fecundity, late maturity, slow growth) make them more vulnerable to fishing pressure than most teleost fish. Overfishing, wide use of non-selective fishing practices and habitat degradation are leading to dramatic declines of these species in the Mediterranean Sea. In general, elasmobranchs are not targeted but are caught incidentally. In many fisheries they are, however, often landed and marketed. The study also highlights the following points: – Works are concentrated mainly in the western Mediterranean. Few works concern endangered species and those of the GFCM priority list; – Much systematic confusion persists for some species and some others are doubtful; – The IUCN red list shows clearly the vulnerability of elasmobranchs and the lack of data; – A decline in cartilaginous fish speci es landings has been observed while fishing effort has generally increased; – A standardization of methods and expression of results on the biology should be generalized in the whole Mediterranean; – Papers on biologic parameters concern few species primarily in the occidental and central Mediterranean areas. Therefore, recommendations to fill gaps in order to protect and manage elasmobranchs stocks are proposed in this document. In fact, better understanding of the composition of incidental and targeted catches of sharks by commercial fisheries and biological and ecological parameters are fundamentally important for the conservation of these populations. Moreover, problems encountered by elasmobranchs in the GFCM area are highlighted and conservation measures are suggested. -
MeetingMeeting documentReport of the GFCM Workshop on Artificial Reefs in the Mediterranean and Black Sea, Izmir, Turkey, 27 September 2013
GFCM Scientific Advisory Committee (SAC). Subcommittee on Marine Environment and Ecosystems (SCMEE). 27 September 2013, Izmir, Turkey
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Book (stand-alone)Technical reportReport of the FAO Workshop on Implementing the Agreement on Port State Measures to Prevent, Deter and Eliminate Illegal, Unreported and Unregulated Fishing in the Mediterranean and Black Sea, Tirana, Albania, 29 February – 4 March 2016 2016
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No results found.This document contains the report of the FAO Workshop on Implementing the Agreement on Port State Measures to Prevent, Deter and Eliminate Illegal, Unreported and Unregulated Fishing (the Agreement) that was held at the Sheraton Hotel in Tirana, Albania, from 29 February to 4 March 2016. The workshop was attended by 42 participants from 16 coastal countries of the Mediterranean and Black Sea, in addition to representatives from one non-governmental organization (NGOs), one intergovernmental orga nization, one regional fishery management organizations (RFMO) and the European Commission. The workshop is organized to improve the understanding of the provisions of the PSMA, to highlight the policy, legal, institutional and operational requirements for effective implementation of the provisions, and to enhance the necessary skills of national officers in the implementation of port State measures. The workshop agenda included a number of items to inform the participants on the provisions and requirements of the PSMA, as well as the costs and benefits. The second half of the workshop brought the participants together in working groups to discuss challenges and recommendations in the region in terms of legal and policy, institutional and capacity building, operations, and finally regional cooperation. Funding for the workshop was provided by the Norwegian Government through the project "Support to the effective application of 2009 FAO Agreement on port State measures to combat illegal , unreported and unregulated fishing" (GCP/GLO/515/NOR).
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Book (series)Technical study小型鱼菜共生食物生产 – 鱼菜综合种养技术 2021本技术手册首先介绍了鱼菜共生的概念,包括其发展简史及其在无土栽培和现代农业大范畴中的地位。随后是鱼菜共生的主要理论框架,包括氮循环和硝化作用、细菌的作用、鱼菜共生系统均衡的概念;接着介绍了重要的技术内容,包括水质参数、水质测试和鱼菜共生的水源,以及系统设计的一些方法和理论,包括三种主要的鱼菜共生系统:基质床栽培、营养膜栽培和深水栽培。本手册详细介绍了鱼菜共生生态系统组成的三类生物(细菌、植物和鱼类),手册还介绍了管理策略和故障排除方法以及相关的话题,尤其强调了鱼菜共生投入品中当地可持续材料的使用。本手册还包含九个附录,介绍了其他重要内容:鱼菜共生中常见植物生长的最适条件;常见病虫害的化学和生物防治,包含一份共用的种植指南;常见鱼病及其症状、病因以及治疗方法;在鱼类种群量和投饲量一定的条件下,计算生成的氨含量和所需的生物过滤介质数量;自制鱼饲料的生产;建立鱼菜共生系统装置的步骤和注意事项;小规模基质栽培鱼菜共生系统的成本收益分析;构建三种小规模鱼菜共生系统的综合指导步骤;以及本手册的简要总结,用作拓展、延伸和教育的补充材料。
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ProjectProgramme / project reportConservation and sustainable use of biological diversity in the Caroní River basin of Bolívar State (Venezuela) 2023
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