Results 81 to 90 of about 2,878 (177)

Setting a precautionary catch limit for Antarctic krill [PDF]

open access: yes, 2002
A revised precautionary catch limit for Antarctic krill (Euphausia superba) in the Scotia Sea of 4 million tons was recently adopted by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR).
Brandon, M. A.   +16 more
core   +2 more sources

Energy audit and carbon footprint in trawl fisheries. [PDF]

open access: yesSci Data, 2022
Sala A   +6 more
europepmc   +1 more source

Experimental investigation and numerical analysis to develop low-energy large-midwater trawls

open access: yesChina Ocean Engineering, 2017
Fuel consumption in fisheries is a primary concern because of its effects on the environment and the costs incurred by fishermen. Many studies have been conducted to reduce the fuel consumption in fishing operations. Fuel consumption due to fishing gear during a fishing operation is generally related to the hydrodynamic resistance on the gear.
Jihoon Lee   +3 more
openaire   +2 more sources

The Threatened Status of Steller Sea Lions, Eumetopias jubatus, under the Endangered Species Act: Effects on Alaska Groundfish Fisheries Management [PDF]

open access: yes, 1995
In April 1990, the Steller sea lion, Eumetopias jubatus, was listed as threatened under the U.S. Endangered Species Act by emergency action. Competitive interactions with the billion-dollar Alaska commercial groundfish fisheries have been suggested as ...
Berg , Ronald J.   +2 more
core  

Catchability of pelagic trawls for sampling deep-living nekton in the mid-North Atlantic [PDF]

open access: yes, 2010
Material collected in summer 2004 from the Mid-Atlantic Ridge between Iceland and the Azores with three pelagic trawls was used to estimate relative catchabilities of common fish, cephalopod, decapod, and jellyfish species. Catchability is defined as the
Barkley   +58 more
core   +3 more sources

A Midwater Trawl Net with Mouth Opening Canvas Devices for Stock Assessments.

open access: yesNIPPON SUISAN GAKKAISHI, 1996
The purpose of this work is to develop a midwater trawl net to survey fish stock. A constant net mouth opening is necessary in order to measure fish stock densities accurately. For this purpose, canvas kites were attached to the midwater trawl net, instead of floats and weights.The area of canvas kites attached to the headrope and groundrope was ...
Takashi Yonezawa   +4 more
openaire   +2 more sources

മത്സ്യബന്ധനത്തിനുളള വിവിധതരം ട്രോള്‍ വലകള്‍ (Different kinds of trawl nets for power fishing) [PDF]

open access: yes, 1998
Trawl net is a bag-shaped gear towed through water, the mouth of which is kept open either by a frame or beam or otter boards and floats or kites and sinkers or weight.
Verghese, C P
core  

Comparisons of measured volume backscattering strengths with predictions based on midwater trawls [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1981
Volume backscattering strengths have been measured close in space and time to midwater trawls in which small deep-sea fishes were caught. The acoustic experimental method was to deploy both an omnidirectional and a directional hydrophone and to detonate small explosive charges.
openaire   +1 more source

Life history of South African snoek, Thyrsites atun (Pisces: Gempylidae): a pelagic predator of the Benguela ecosystem [PDF]

open access: yes, 2002
Snoek (Thyrsites atun) is a valuable commercial species and an important predator of small pelagic fishes in the Benguela ecosystem. The South African population attains 50% sexual maturity at a fork length of ca.73.0 cm (3 years).
Griffiths, Marc H.
core  

Micronekton of the North Pacific [PDF]

open access: yes, 2005
1. INTRODUCTION 1.1 Working Group History 2. SPECIES COMPOSITION AND DISTRIBUTION PATTERNS RELATED TO WATER MASSES 2.1 Mesopelagic Fishes 2.1.1 Dominant families 2.1.2 Large-scale feeding and/or spawning migration or expatriation ...

core  

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