Results 11 to 20 of about 34,528 (205)

Design and redesign of a bottom trawl survey in Chesapeake Bay, USA

Frontiers in Marine Science, 2023
Fisheries-independent surveys that reliably sample a broad size range of exploited and ecologically important species provide valuable data in support of fisheries management and ecosystem science.
Robert J. Latour, James Gartland, Christopher F. Bonzek   +2 more
doaj   +3 more sources

ICES Survey Protocols – Offshore Beam Trawl Surveys, Coordinated by Working group on Beam Trawl Surveys (WGBEAM)

, 2023
The ICES survey protocol for offshore beam trawl surveys describes the current methodologies, stratification and sample processing used in the offshore beam trawl surveys that provide fisheries-independent information to the fish stock assessments for a variety of flatfish species.
de Boois, Ingeborg J., Burt, Gary, Lecomte, Jean-Baptiste, Masnadi, Francesco, Panten, Kay, Raat, Heleen, Sigurðsson, Guðjón Már, Thorlacius, Magnús   +7 more
openaire   +2 more sources

TO THE METHODOLOGY FOR SEPARATION OF MIGRATING POPULATION COMPLEXES OF THE OKHOTSK SEA PINK SALMON IN THE PACIFIC WATERS AT KURIL ISLANDS USING THE GONAD-SOMATIC INDEX

Известия ТИНРО, 2020
New method is proposed for operational differentiation of pink salmon runs with different time of spawning and different state of gonads measured quantitatively with a gonad-somatic index.
E. A. Shevlyakov, M. G. Feldman, V. A. Shevlyakov, A. N. Kanzeparova   +3 more
doaj   +1 more source

Genetic evidence for wide distribution of the alien prawn-goby, Vanderhorstia mertensi (Actinopterygii: Perciformes: Gobiidae), along the northeast Mediterranean [PDF]

Acta Ichthyologica et Piscatoria, 2009
Vanderhorstia mertensi Klausewitz, 1974, is a recently acknowledged alien fish in theMediterranean Sea, hitherto observed only from Fethiye Bay, Turkey.
M.B. Yokes, M. Bilecenoglu, M. Goren, B.S. Galil, A. Diamant   +4 more
doaj   +3 more sources

Depth trajectory and performance of a trawl used for an international bottom trawl survey in the Mediterranean

Scientia Marina, 2002
An international bottom trawl survey (the MEDITS programme) has been carried out every year in the Mediterranean since 1994. During each survey, about 1000 hauls are done by a fleet of 8 to 11 vessels from 10 to 800 m depth, applying a unique ...
Jacques Bertrand, Iole Leonori, Pierre Yves Dremière, Giulio Cosimi   +3 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   +39 more
openaire   +7 more sources

TSDV: A GIS tool for inspecting trawl survey data [PDF]

ICES Journal of Marine Science, 2002
No abstracts are to be cited without prior reference to the author.The TSDV is a tool for preliminary analyses of data produced by the surveys. The results obtained are a solid starting point for a more detailed study focusing on the knowledge of the distribution, the abundance and the population dynamics of demersal species.
Fortunati L, Garofalo G, Demontis R
openaire   +2 more sources

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)

Egyptian 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

Some updates to the method for calculation of parameters of bottom trawl system

Известия ТИНРО, 2016
The method for calculation of geometric parameters of trawl system proposed by F.I. Baranov is analyzed. The calculation includes evaluation of spacer force and drag for all elements of trawl system and solution of transcendental equation to find a ...
Egor A. Zakharov, Oleg N. Kruchinin
doaj   +1 more source

Classification of Southern Ocean krill and icefish echoes using random forests [PDF]

, 2016
Acknowledgements The authors thank the crews, fishers, and scientists who conducted the various surveys from which data were obtained. This work was supported by the Government of South Georgia and South Sandwich Islands.
Fallon, Niall G., Fernandes, Paul G., Fielding, Sophie   +2 more
core   +1 more source