Results 31 to 40 of about 8,740 (202)

Fish and invertebrate length frequencies of three bottom trawl hauls in 2022, southern North Sea

open access: yes, 2023
During a MARSYS student training cruise (HE600) three bottom trawl hauls were conducted on 2022 June 3., 7. and 10. in the southern North Sea. The length frequency data originate from bottom trawl hauls, conducted with the Schollennetz from RV Heincke ...
Floeter, Jens
core   +1 more source

Testing of a helix twine off-bottom trawl on Georges Bank

open access: yesFrontiers in Marine Science, 2023
The massive biomass of Eastern Georges Bank haddock (Melanogrammus aeglefinus) is difficult to harvest without capturing less robust, but still valuable groundfish stocks like Atlantic cod (Gadus morhua) and some flatfish species.
David M. Chosid, Michael Pol
doaj   +1 more source

Impact and distribution of bottom trawl fishing on mud-bottom communities in the Kattegat [PDF]

open access: yesMarine Ecology Progress Series, 2016
The Kattegat in the inner Danish waters has been trawled for at least 80 yr, but so far only few attempts have been made to quantify the trawl effort, its spatial distribution and its potential ecological impact on the benthic fauna. GIS-analyses of VMS-data from trawling in the Kattegat by both Danish (2005-2009) and Swedish (2007-2009) vessels show ...
Pommer, Christina D.   +2 more
openaire   +3 more sources

Cable length optimization for trawl fuel consumption reduction [PDF]

open access: yes, 2013
A numerical method for optimization of the cable lengths in trawls with respect to the ratio between the estimated trawl drag and the predicted catch efficiency is developed and applied.
KHALED, Ramez   +2 more
core   +1 more source

Relevance of using the equipment for control of fishing gear to reduce inaccuracy in evaluation of marine organisms abundance

open access: yesИзвестия ТИНРО, 2016
Geometric parameters of the bottom trawl DT 27.1/24.4 were tested aboard RV TINRO in the Bering Sea using the acoustic equipment «Scanmar» (Norway). Possible errors in the estimates of marine organisms abundance by bottom trawl survey are calculated for ...
Egor A. Zakharov, Pavel O. Emelin
doaj   +1 more source

Catch Composition of Different Bottom Trawl Cod-ends in the Western Black Sea

open access: yesAquatic Sciences and Engineering, 2023
Across the Mediterranean and the Black Sea, an improvement in technological adoption which optimizes the environmental benefits of fisheries is needed. The testing of quality standards in trawl fishing is one of the essential components. In an experiment,
İbrahim Tamer Emecan   +6 more
doaj   +1 more source

Sediment recognition by warp tension monitoring of bottom otter trawling and applying the self-organizing map algorithm

open access: yes, 2021
Model towing experiments of a bottom trawl net with hyper-lift trawl door were conducted to investigate the effect of the bottom sediment (concrete, sand, gravel, and rock) on the warp tension of the overall trawl system.
Hattori, Ren   +12 more
core   +1 more source

Recovery Signals of Rhodoliths Beds since Bottom Trawling Ban in the SCI Menorca Channel (Western Mediterranean)

open access: yesDiversity, 2021
One of the objectives of the LIFE IP INTEMARES project is to assess the impact of bottom trawling on the vulnerable benthic habitats of the circalittoral bottoms of the Menorca Channel (western Mediterranean), designated a Site of Community Importance ...
Maria Teresa Farriols   +16 more
doaj   +1 more source

Investigating gear and seasonal effects in experimental trawl surveys: The case of Galeus melastomus Rafinesque, 1810 (Chondrichthyes, Scyliorhinidae) in the South of Sicily (Central Mediterranean)

open access: yesEgyptian Journal of Aquatic Research, 2017
Mediterranean young-fish oriented experimental bottom trawl surveys represent a precious source of information on both past and current standing stocks and their life history traits and exploitation state.
T. Bottari, P. Rinelli, S. Ragonese
doaj   +1 more source

Calibration of bottom trawls for northern shrimp [PDF]

open access: yesICES Journal of Marine Science, 2008
Abstract Kingsley, M. C. S., Wieland, K., Bergström, B., and Rosing, M. 2008. Calibration of bottom trawls for northern shrimp. – ICES Journal of Marine Science, 65: 873–881. The Skjervøy 3000 trawl used since 1988 in the West Greenland bottom-trawl survey has been replaced by a Cosmos 2000. To be able to compare old data on the northern
Michael C. S. Kingsley   +3 more
openaire   +1 more source

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