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Book (series)Review of the state of world marine fishery resources 2011
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No results found.Marine fisheries are very important to the economy and well-being of coastal communities. Maintaining the long-term prosperity and sustainability of marine fisheries is not only of political and social significance but also of economic and ecological importance. This review presents an updated assessment of the current status of the world’s marine fishery resources. Its aim is to provide the FAO Committee on Fisheries, policy-makers, civil society, fishers and managers of world fishery resources with a comprehensive, objective and global review of the state of the living marine resources of the oceans. The review was based mainly on official catch statistics up until 2009 and relevant stock assessment and other complementary information available until 2010. This review consists of four major components. The first is a global overview of marine fishery production and the state of marine fish resources. The second part is divided into chapters that summarize and co mpile the information available for each FAO major fishing area, together with a discussion of the major trends and changes that have occurred with the main fishery resources exploited in each area and comments on the stock assessment work undertaken in support of fisheries management in each region. The third section is allocated to special topics that attract great attention in the international community, including tuna and tuna-like species, sharks, the Pacific islands region, de ep-sea fisheries, and fisheries and long-term climate variability. The final part lists all the tables that provide details about historical and recent catches for the major marine resources and, where possible, assessments of the most current state of exploitation of fish stocks. -
Book (series)The state of world highly migratory, straddling and other high seas fishery resources and associated species 2006
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No results found.This document describes highly migratory fish stocks, straddling fish stocks, and stocks of other high seas fishery resources and the fisheries for them, including information on their state of exploitation. Fisheries for highly migratory species are important in all oceans and semi-enclosed seas, except for polar regions. Fisheries for straddling fish stocks are much more localized, primarily occurring in a few regions where continental shelves extend beyond the 200 miles Exclusive Economic Zon e while most fisheries for other high seas fishery resources are deep-water fisheries. Formal assessments are lacking for most of the stocks examined. Nevertheless, the compilation of available assessments and FAO’s analyses indicate that about 30 percent of the stocks of highly migratory tuna and tuna-like species, more than 50 percent of the highly migratory oceanic sharks and nearly two-thirds of the straddling stocks and the stocks of other high seas fishery resources are overexploited or de pleted. The stocks concerned represent only a small fraction of the world fishery resources, but are key indicators of the state of an overwhelming part of the ocean ecosystem which appears to be more overexploited than EEZs. The scarcity of the information available and the short time elapsed since the entering into force of the UN Fish Stock Agreement does not allow for a realistic assessment of the impact it may have had on the state of the various fish stocks being exploited in the high seas . Some key issues on which progress and improvements are needed are addressed, including those regarding fisheries in the high seas for resources other than straddling stocks and highly migratory species. -
DocumentStock assessment 1971
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No results found.Information on the Indian Ocean fishery resources is not yet extensive enough to permit estimates of maximum sustained yields for most species. Data are especially lacking for the coastal fisheries of scattered nature. 20 Among oceanic species, those heavily exploited are the large-sized tunas. The maximum sustained yields for the longline fishery are estimated to be 107,000 to 128,000 tons. The billfish catch is now reportedly around 10,000 tons by longline (Table 2). Untouched oceanic species are the small tunas and sharks at the fourth trophic level, and saury, squids, and other small shoaling pelagic forms of the third trophic level. The skipjack is the most promising species for future exploitation, estimated to provide a catch of 200,000 to 400,000 tons. Further surveys inclusive of larva collection and acoustic and experimental fishing will present more reliable estimates of the pelagic potentials. It is also possible to develop demersal fisheries on offshore banks, supposed to sustain three million tons of catch, after intensive exploratory operation. Present coastal fisheries are not intensive, except those for prawns and other valuable Crustacea (Table 17). This makes it difficult to determine levels of the maximum sustained yields or of the potential yields. Estimated potential yields, three to eight million tons in the western Indian Ocean and three to five million tons in the eastern Indian Ocean, a.re far larger than the present catches, which are about one mil lion tons in each of the two parts of the ocean (Table 18). What is needed in order to obtain more appropriate measures of the maximum sustained yields and potential yields are the collection of catch statistics and information on distribution, etc., by exploratory fishing outside the traditional fishing grounds. Prawns, especially Penaeus followed by Metapenaeus, are exploited by mechanized trawlers together with traditional gear. Heavy exploitation has already been known, at least, in the Gulf between Iran and the Arabian Peninsula, in the waters around Karachi, West Pakistan; off Kerala State in India, and in Shark Bay, Australia (Table 19). Shrimp fisheries are developing in other parts of the Indian Ocean, such as Tanzania, Madagascar, Indonesia, and Western Australia. It is urgent to collect and analyse the catch statistics and other biological information. In addition, the limited distribution of prawns in inshore waters often causes overcrowding of commercial boats therein, res ulting in intensive fishing of other fish stocks in these areas, some of which are discarded at sea, thus resulting in the waste of living resources. It is essential to prepare catch statistics and other scientific information so as to assist the industry.
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