Results 81 to 90 of about 8,740 (202)

Influence of sea-bottom temperature and depth on swept area estimation from trawl surveys

open access: yesScientia Marina, 2014
The methodological approach to data collection and analysis in Mediterranean bottom trawl surveys has changed considerably since their beginnings in the mid-1980s.
Jure Brčić   +2 more
doaj   +1 more source

Discard sampling of Dutch bottom-trawl fisheries in 2009 and 2010

open access: yes, 2011
In the European Union, the collection of discard data is enforced through the Data Collection Regulation or Framework (DCR/DCF) of the European Commission (EC).
Nijman, R.R.   +5 more
core  

Bottom trawl positions from European Union-Spanish research bottom trawl surveys on the NAFO Regulatory Area (NW Atlantic)

open access: yes, 2014
The bottom trawl positions from European Union-Spanish research bottom trawl groundfish surveys carried out for the period 2002-2013 on the NAFO Regulatory Area (Divs. 3LMNO) and biomass of some Vulnerable Marine Ecosystem indicator taxa, that is sponges,
Francisco Javier Murillo (625490)   +1 more
core   +1 more source

Technical Report Modified Bottom Trawl Net (High Opening Characteristic) of Thailand [PDF]

open access: yes, 2016
Technical Report on Modified Bottom Trawl Net (High Opening Characteristic) of Thailand aims to investigate and update bottom trawl net constructions modified by local Thai fishers, operated in the Gulf of Thailand.
Chanrachkij, Isara, Ruangsivakul, Narong
core  

An analysis of fishing gear competition. Catalan fisheries as case studies

open access: yesScientia Marina, 2013
An asymmetric index was developed to measure the competition relationships among fishing fleets (or gears or métiers) in a multispecies fishery. This index can be used to measure the degree of dominance of each fleet and its level of independence from ...
Jordi Lleonart   +2 more
doaj   +1 more source

Escapement of gadoid fish beneath a commercial bottom trawl: Relevance to the overall trawl selectivity

open access: yesFisheries Research, 2006
Escapement of Atlantic cod (Gadus morhua), haddock (Melanogrammus aeglefinus) and saithe (Pollachius virens) beneath a commercial bottom trawl, rigged with a 60 cm diameter rockhopper gear, was studied in the Barents Sea. The study was performed off the coast of north Norway in March/April 2003.
Ingólfsson, Ólafur Arnar   +1 more
openaire   +2 more sources

Behavior of trawl net at touched anda left bottom [PDF]

open access: yes, 2014
This research is focused on the problem of environment destruction at the seabed due to fishing by bottom trawls. The aim of this research is to reduce the damage to the seabed by fishing gear.
武田, 篤史   +8 more
core  

Benthic Indicators for Monitoring Bottom‐Trawl Fishing Impacts [PDF]

open access: yesThe Bulletin of the Ecological Society of America
There is increasing interest in developing indicators to assess the state of benthic communities in shelf seas primarily affected by bottom trawling. Yet, many indicators have been developed in specific geographic regions making it difficult to determine their broader applicability.
P. Daniël van Denderen   +6 more
openaire   +2 more sources

How effective is electronic monitoring in mixed bottom-trawl fisheries?

open access: yes, 2015
In the context of the landing obligation under the European Common Fisheries Policy, electronic monitoring (EM) is often presented as one of the solutions to fully document catches.
Helmond, A.T.M., van   +2 more
core   +2 more sources

The influence of mesh size and shape on the size selection of European hake (Merluccius merluccius) in demersal trawl codends: An investigation based on fish morphology and simulation of mesh geometry

open access: yesScientia Marina, 2018
European hake (Merluccius merluccius) is an important commercial species for several European bottom trawl fisheries. Therefore, understanding the influence of codend mesh size and shape on the size selection of European hake is critical for defining ...
Adnan Tokaç   +4 more
doaj   +1 more source

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