Results 61 to 70 of about 8,740 (202)

Physical Disturbance by Bottom Trawling Suspends Particulate Matter and Alters Biogeochemical Processes on and Near the Seafloor

Frontiers in Marine Science, 2021
Bottom trawling is known to affect benthic faunal communities but its effects on sediment suspension and seabed biogeochemistry are less well described. In addition, few studies have been carried out in the Baltic Sea, despite decades of trawling in this
Clare Bradshaw, Martin Jakobsson, Volker Brüchert, Stefano Bonaglia, Carl-Magnus Mörth, Julia Muchowski, Christian Stranne, Mattias Sköld   +7 more
doaj   +1 more source

Evaluation of the California halibut trawl grounds

California Fish and Wildlife Journal
The Marine Life Management Act (MLMA), California Fish and Game Code, sections 7050–7090, requires an ecosystem-based approach for managing the state’s fisheries, using the best available science, and involving stakeholders in a comprehensive and ...
Travis Tanaka, Kirsten Ramey, Shoshana Lescht-Smith, Michael Patton, Matthew Warren, Paul Reilly   +5 more
doaj   +1 more source

International Bottom Trawl Survey Working Group (IBTSWG) [PDF]

, 2019
This report summarises the national contributions in 2018–2019 and the planning for the 2019–2020 surveys coordinated by the International Bottom Trawl Survey Working Group (IBTSWG). In the North Sea, the surveys are performed in quarters (Q) Q1 and Q3 while in the Northeast Atlantic the surveys are conducted in Q1, Q3, and Q4 with a suite of 14 ...
Alvested, Anja Helene, Auber, Arnaud, Baldó, Francisco, Batsleer, Jurgen, Baudron, Alan, Bland, Barbara, Börjesson, Patrik, Burns, Finlay, Chaves, Corina, Chun, Chen, Cresson, Pierre, Croll, Jasper, Ellis, Jim, Giraldo, Carolina, Giradin, Raphaël, Hatton, Benjamin, Haslob, Holger, Kelly, Ruth, Kloppmann, Matthias, Kvaavik, Cecilia, Kynoch, Rob, Laffargue, Pascal, Miethe, Tanja, Mudde, Quiten, Neumann, Hermann, Needle, Coby, Rodriguez, Alfonso Perez, Pettit Rosen, Shale, Reecht, Yves, Rodriguez Buelna, Alondra Sofia, Schuchert, Pia, Sell, Anne, Sinclair, Louisa, Soni, Vaishav, Stokes, David, Underwood, Melanie, Hal, Ralf Van, Velaso, Francisco, Walker, Nicola, Wieland, Kai; id_orcid 0000-0003-1481-7743   +39 more
openaire   +6 more sources

Influence of Trawl Geometry and Vertical Distribution of Fish on Sampling with Bottom Trawl

Journal of Northwest Atlantic Fishery Science, 1986
Studies were initiated at the Institute of Marine Research, Bergen, in 1984 with the aim of improving the reliability of bottom trawl and acoustic survey results for cod and haddock in the Barents Sea. Spread of the wings and doors and height of the trawl were measured during fishing operations, and acoustic recordings of fish densities were obtained ...
A Engås, O R Godø
openaire   +1 more source

Bioeconomic analysis of the effects of modifying the trawl extension piece with T90 netting

Scientia Marina, 2018
We assessed the effect of the European discards ban on the profitability of bottom trawlers in a case study fishery (GSA06, NW Mediterranean) in the transition period 2017-2018, when the species that characterize the fishery, viz.
Iván Sola, Francesc Maynou
doaj   +1 more source

New records of rare marine fishes from the Gulf of Mannar, India [PDF]

Acta Ichthyologica et Piscatoria, 2014
The Gulf of Mannar is a haven for rare species, which along with their pristine reef habitats are under constant threat from natural phenomena and anthropogenic activities.
V.P. Padate, R. Rodrigues, C.U. Rivonker
doaj   +3 more sources

Feasibility and productivity analysis of arad (mini trawl) fisheries in Cilincing North Jakarta [PDF]

BIO Web of Conferences
In 2019, fish production landed at TPI Cilincing weighed 1,476,750 kg, with a value of IDR 47,501,137,000.00. One of the fishing gears used in Cilincing is mini trawl nets. This fishing gear is categorized as illegal by the ministry of marine affairs due
Caesario Rachmad, Patanda Mercy, Yusfiandayani Roza, Simbolon Domu, Pribadi Tri Dewi Kusumaningrum, Rahmani Urip, Apriliani Izza Mahdiana   +6 more
doaj   +1 more source

The effective swept volume of a bottom trawl

, 2004
No abstracts are to be cited without prior reference to the author.The reaction of individual fish towards an approaching trawling vessel has previously been measured using target-tracking methods. In this paper these measured velocities are fitted to a deterministic mean behaviour model and a diffusion-advection model taking the random component into ...
Handegard, Nils Olav, Tjøstheim, Dag
openaire   +2 more sources

BOTTOM TRAWL SIZE SELECTIVITY METHODS IN THE TURKEY [PDF]

Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2017
Trawling is an important fishing method used by the fishermen in the Turkey. Bottom trawling fisheries in this part of Mediterranean are essentially multispecies.
Yaşar ÖZVAROL, Yıldız BOLAT
doaj  

Simulating potential impacts of bottom trawling on the biological carbon pump: a case study in the Benguela Upwelling System

Frontiers in Marine Science
Bottom-trawl fishery is known to cause major disturbances to marine sediments as the dragging of trawl gears across the seabed fosters sediment resuspension, which can lead to organic particle remineralization and release of benthic CO2 and nutrients ...
Claire Siddiqui, Tim Rixen, Tim Rixen, Niko Lahajnar, Tarron Lamont, Tarron Lamont, Tarron Lamont, Anja K. van der Plas   +7 more
doaj   +1 more source