Results 21 to 30 of about 3,290 (307)

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

Geographical patterns of seabird attendance to a research trawler along the Iberian Mediterranean coast

Scientia Marina, 2003
The attendance of seabirds to a research trawler along the Mediterranean coast of the Iberian Peninsula was monitored during six demersal surveys (MEDITS project). Cruises were performed in late spring during the period 1994-1999.
Pere Abelló, José Manuel Arcos, Luis Gil Sola   +2 more
doaj   +1 more source

ICES Survey Protocols – Manual for Inshore Beam Trawl Surveys, Coordinated by Working Group on Beam Trawl Surveys (WGBEAM) [PDF]

This manual describes the current methodologies, stratification, and sample processing used in the inshore beam-trawl surveys that provide fisheries-independent information to the fish stock assessments for flatfish species (often recruitment indices), as well as for elasmobranch species.
Beier, Ulrika, De Boois, Ingeborg J., Haslob, Holger, Raat, Heleen, Vrooman, Jip   +4 more
openaire   +2 more sources

Working Group on Beam Trawl Surveys (WGBEAM) [PDF]

, 2020
The Working Group on Beam Trawl Surveys (WGBEAM) coordinates and implements European inshore and offshore beam trawl surveys, including planning, standardization, data transmis-sion and data quality assurance. The group also coordinates the Italian-Slovenian and Croatian beam trawl survey in the Adriatic Sea as there is no other body in the EU ...
openaire   +5 more sources

Fishing Gears in Sarawak: A Preliminary Survey [PDF]

E3S Web of Conferences
Unique to Sarawak, the fishing gears double-rig trawl, paka, panau, and rantau were gears that could only be found here. The focus of the present study was to catalog the diversity of fishing equipment across two regions, Wilayah II (Belawai, Daro, Mukah,
Maidin Mohd Samsul Rohizad, Harun Nadiayatul Atikah, Mustapha Mastura, Abdul Wahab Abdullah, Norhanida Daud, Jamil Musel   +5 more
doaj   +1 more source

Deep vision: an in-trawl stereo camera makes a step forward in monitoring the pelagic community. [PDF]

PLoS ONE, 2014
Ecosystem surveys are carried out annually in the Barents Sea by Russia and Norway to monitor the spatial distribution of ecosystem components and to study population dynamics.
Melanie J Underwood, Shale Rosen, Arill Engås, Elena Eriksen   +3 more
doaj   +1 more source

Prospects for the pink salmon fishery in the Russian waters of the Bering and Okhotsk Seas in 2023 based on analysis of trawl surveys of the juveniles aboard RV TINRO and RV Professor Kaganovsky in autumn 2022

Известия ТИНРО, 2023
Modern technique of counting pink salmon juveniles in trawl surveys by two research vessels simultaneously makes it possible to cover the surveyed area in a short time that excludes repeated counts of actively migrating fish at adjacent transects.
A. A. Somov, E. A. Shevlyakov, A. N. Starovoitov, V. A. Shevlyakov, N. A. Dederer, I. V. Melnikov   +5 more
doaj   +1 more source

Improvement of methods for estimation of catchability for trawl survey systems with use of hydroacoustic means (on example of walleye pollock in the Okhotsk Sea)

Известия ТИНРО, 2015
In commercial fishery, catching properties of fishing gears are developed mostly for effective catch of fish, rather than for precise measurement of fish distribution density in water, so a problem of catchability exists and this parameter should be ...
Mikhail Yu. Kuznetsov, Vladimir I. Poljanichko, Igor A. Ubarchuk   +2 more
doaj   +1 more source

The MEDITS trawl survey specifications in an ecosystem approach to fishery management

Scientia Marina, 2019
The MEDITS programme started in 1994 in the Mediterranean with the cooperation among research institutes from four countries: France, Greece, Italy and Spain. Over the years, until the advent of the European framework for the collection and management of
Maria Teresa Spedicato, Enric Massutí, Bastien Mérigot, George Tserpes, Angélique Jadaud, Giulio Relini   +5 more
doaj   +1 more source

Optimization of Catch Study Fleet Sample Size Based on CPUE of Decapterus maruadsi [PDF]

Progress in Fishery Sciences
Fishery production surveys constitute the basis for assessing and managing fishery resources. A well-defined and reasonable sample size is essential for the accuracy and precision of survey outcomes.
LIANG Yaowei, FENG Bo, LI Zhonglu, LI Meilin, CHEN Yueze   +4 more
doaj   +1 more source