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The geometrical gear shape of a bottom trawl
Ocean Engineering, 2014Abstract An estimation of the gear shape during a bottom trawl can be achieved through geometrical modeling of the trawl system. This can be implemented by processing the field data obtained using the Scanmar system. The gear shape from the square through the bag net was assumed to be the upper and lower parts of different elliptic cones of which the
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Cable behavior in bottom trawling
Ocean Engineering, 1985Abstract A method of numerical analysis based on iterative solutions of quasi-linearized differential equations describing the behavior of long cable segments is developed. The method is implemented in a computer program for use on small computer facilities, such as desktop-sized computers.
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Decision Support to Sustainable Management of Bottom Trawl Fleet
Sustainability, 2016 A decision support concept (DSC) for sustainable management of the bottom trawl fleet was created in line with ecosystem-based management. It is based on principles that integrate ecological, social and techno-economic aspects of trawl fisheries in a ...
Irena Bitunjac +2 more
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Effects of bottom trawling on ecosystem functioning
Journal of Experimental Marine Biology and Ecology, 2008By combining field observations with data from controlled mesocosm experiments this study demonstrated that bottom trawling has the potential to cause long-term impacts on sediment nutrient fluxes. Field observations confirmed that trawling reduced the density of important bioturbators in the study area, but revealed only weak effects of trawling on ...
Frode Olsgard +4 more
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Preliminary bottom trawling experiments with a newly designed separator fish trawl
Fisheries Research, 1991Abstract A separator trawl was designed by introducing a short horizontal panel of net webbing between the upper and lower belly of a 29.7 m/34.2 m (head rope/foot rope) high opening bottom trawl (HOBT), dividing the net into two equal horizontal compartments terminating in two independent codends.
M.K. Ashok, D.S. Sheshappa
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Marine litter in bottom trawls off the Portuguese coast
Marine Pollution Bulletin, 2015Benthic marine litter along the Portuguese coast, was recorded in 14 trips on stern trawlers covering a distance of 2117 km and an area of 56.2 km(2), average depth range 90-349 m. 2034 items of marine litter were registered, 76% were plastics and 38.6% were originated from fishing related activities.
Diogo, Neves +2 more
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Prevent bottom trawling in southern Brazil
Science, 2021Luís Gustavo, Cardoso +4 more
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Exploratory bottom trawling in Lake Victoria
2021When the Lake Victoria Fisheries Research Project began, the background information necessary for the successful application of quantitative stock assessment was lacking. For this. reason and also due to the size of Lake Victoria, the complexity and variety of its many habitats, and its multispecies fishery, it was decided that initial stock assessment
Bergstrand, E., Cordone, A.J.
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A Transactional and Collaborative Approach to Reducing Effects of Bottom Trawling
Conservation Biology, 2013Abstract Private‐sector financial and legal transactions have long been used to protect terrestrial habitats and working landscapes, but less commonly to address critical threats in marine environments. Transferrable and marketable fishing privileges, including permits and quotas, make it possible to use private‐sector transactions as
Mary, Gleason +7 more
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Quantifying the carbon benefits of ending bottom trawling
Nature, 2023Jan Geert Hiddink +7 more
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