نتایج جستجو برای: bottom trawling
تعداد نتایج: 60372 فیلتر نتایج به سال:
Lagoon soft-bottoms are key habitats within coral reef seascapes. Coral fish use these as nurseries, feeding grounds and transit areas. At present, most soft-bottom sampling methods destructive (trawling, longlining, hook line). We developed a remote, unbaited 360° video method (RUV360) to monitor species assemblages in soft bottoms. A low-cost, high-definition camera enclosed waterproof housin...
Bottom trawl fishery is one of the most important coastal fisheries in Taiwan both in production and economic values. However, its annual production started to decline due to overfishing since the 1980s. Its bycatch problem also damages the fishery resource seriously. Thus, the government banned the bottom fishery within 3 nautical miles along the shoreline in 1989. To evaluate the effectivenes...
The Mediterranean deep-water kelp Laminaria rodriguezii is an endangered species in the Adriatic Sea
Deep-water kelps are little-known large brown algae occurring close to the lower limit of photosynthetic life in the sea. This study compares historical and recent records of the deep-water Mediterranean kelp Laminaria rodriguezii in the Adriatic Sea. Historical records include data from herbarium collections and trawling fishery expeditions in the mid-twentieth century, while recent data compr...
Depths between 150 and 400 m off Oahu, Hawaii, were surveyed by submarine, gill nets, and traps. Depth of capture or observations and other data are given for 47 species of fishes and 20 species of decapod Crustacea. Of these species, 10 fishes and five crustaceans are either undescribed or new records for Hawaii. Four other fishes collected and several others observed from the submarine are pr...
The common octopus, Octopus vulgaris, is a very important demersal fishery resource targeted, among other fleets, by freezer bottom-trawlers in the Mauritanian Economic Exclusive Zone (MEEZ). From August 2010 to September 2011, total of 1696 octopuses caught MEEZ where analysed. Many organisms trapped into octopuses’ mantle were found and identified, which are jointly swept while trawling catch...
Understanding the drivers of greenhouse gas emissions in food production systems is becoming urgent. For wild capture fisheries, fuel use during fishing phase generally dominates and highly variable between fisheries. Fuel also essential for economy but fuel-intensive fisheries can still be profitable due to subsidies, particular, if target species high value. Developing an innovative bottom-up...
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