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Book (series)Trends in oceanic captures and clustering of large marine ecosystems
Two studies based on the FAO capture database
2003Also available in:
No results found.Species items reported in the FAO capture fisheries production database have been classified as oceanic or living on the continental shelf. Catch trends of oceanic species, further subdivided into epipelagic and deep-water species, have been analysed over a 50-year period (1950-99) while statistics for shelf species have been re-assigned to large marine ecosystems (LMEs) for a shorter period (1990-99) and used to investigate catch patterns among the various LMEs. Oceanic fisheries constitut e, both in terms of number of species items and in quantities of recent catches, about 10% of global marine catches. Catches of epipelagic species (mostly tunas) and of deep-water species (mostly Gadiformes) have been continuously increasing and reached 8.6 million tons in 1999. Oceanic catches by distant water fleets (DWFs), mostly targeting tunas, have been decreasing in recent years although their share of total DWF catches has increased due to the concurrent drop of non-oceanic DWF catches. Trends of oceanic catches and the contribution of DWFs are examined for all FAO marine fishing areas which show different patterns, mainly depending upon whether they are temperate or tropical areas. Eleven clusters of LMEs have been identified on the basis of similarities in their catch composition classified into eleven species groupings. For each cluster, the distinguishing catch pattern and recent trends by species groupings in each LME are discussed, and considered in relation to infor mation on primary productivity and the abiotic characteristics of the LME. -
DocumentField surveys and the survey and charting of resources 1971
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No results found.Considerable exploratory fishing has been conducted in the Indian Ocean, particularly directed towards definition of demersal fish stocks of the Continental Shelf. Sporadic activities have been undertaken to investigate pelagic tuna and associated species. Shelf species are relatively well-known. Bottom fish populations at depths of 200 mt and more are not generally well-known, and shelf areas off East Africa and Australia need more investigation. The abundance of coastal pelagic species require s definition, as does the distribution. Mangrove swamps and coral seas should be considered special ecological zones. Five major projects should be considered: coastal pelagic fish investigations, collection of bottom fish investigations, detailed studies of selected coral seas and mangrove swamp areas, and studies of some pelagic nekton. Investigators on FAO/UNDP Projects should receive specific instructions regarding the data they collect; this information should be deposited at a Regional Dat a Centre and at FAO Headquarters. Field surveys should, when possible, be contracted to national laboratories or to universities or qualified private research groups. Surveys should be regional in character. -
Brochure, flyer, fact-sheetCommon Oceans – Global sustainable fisheries management and biodiversity conservation in the areas beyond national jurisdiction 2016
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No results found.Oceans make up 70 percent of the planet’s surface and support the livelihoods for millions of people around the world. Despite their important role, numerous threats such as overfishing, destructive fishing practices, marine pollution and seabed mining are threatening the ability of the oceans to continue providing vital ecosystem services and essential food resources. Despite noteworthy progress in overcoming these threats, there is a clear need to address the remaining obstacles.
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