Bottom trawl fisheries

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Food and Agriculture Organization of the United Nations for a world without hunger. Fisheries and Aquaculture Department. Fisheries and aquaculture technology Fish capture technology Aquaculture technology.

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Deep-sea fish species are targeted globally by bottom trawling. The species captured are often characterized by longevity, low fecundity and slow growth making them vulnerable to overfishing. In addition, bottom trawling is known to remove vast amounts of non-target species, including habitat forming deep-sea corals and sponges.

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Trawling is common worldwide due to its efficiency in capturing large numbers of fish. Demersal or bottom trawling covers several gear types, all of which use a cone-like net with a closed end cod-end that holds the catch. These nets are towed by one or two boats and are designed to catch fish living at great depths or on the seabed.

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Jump to navigation. Bottom trawling destroys far more ocean habitat than any other fishing practice on the West Coast. In this fishing method, large weighted nets are dragged across the ocean floor, clear-cutting a swath of habitat in their wake.

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Bordeaux, France: At the 41 st Annual Meeting of the Northwest Atlantic Fisheries Organization NAFO11 countries i and the European Union met to debate management measures for fisheries and discuss how best to protect deep-sea ecosystems on the high seas in the northwest Atlantic. NAFO has closed 21 High Seas areas to bottom-fishing activities over the past 13 years in order to protect deep-sea ecosystems and biodiversity. This year, the last remaining trawl fishery on seamounts in the NAFO area—the fishery for the splendid alphonsino on the Corner Rise seamount chain—has finally been closed after several years of contentious debate, but only following the near extirpation of the stock.

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Lyngby, Denmark. Author contributions: R. We conducted a systematic, high-resolution analysis of bottom trawl fishing footprints for 24 regions on continental shelves and slopes of five continents and New Zealand.

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The new estimates suggest that 42 per cent more fish have been caught by countries than they reported to the Food and Agriculture Organization of the United Nations. The study, which was published today in Frontiers in Marine Scienc e, examines the state of 72 deep-sea fish species caught by bottom trawlers around the world, many of which were exploited to unsustainable levels. For example, Roundnose grenadier estimated catches were greater than 60, tonnes in in the Northeastern Atlantic, but the stock was overfished so fast that a moratorium had to be imposed in in Norwegian waters.

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Food and Agriculture Organization of the United Nations for a world without hunger. Fisheries and Aquaculture Department. Fisheries and aquaculture technology Fish capture technology Aquaculture technology. Search gear types.

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Bottom trawling is trawling towing a trawlwhich is a fishing net along the sea floor. It is also referred to as "dragging". The scientific community divides bottom trawling into benthic trawling and demersal trawling.

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Trawling is common worldwide due to its efficiency in capturing large numbers of fish. Demersal or bottom trawling covers several gear types, all of which use a cone-like net with a closed end cod-end that holds the catch. These nets are towed by one or two boats and are designed to catch fish living at great depths or on the bottom of the sea. Pots and traps are used in commercial fishing to catch crustaceans like lobsters and crabs.

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