European Directory of Marine Environmental Data (EDMED)

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General
Data set name

Effect of beam trawl survey on benthic communities and sediments, Liverpool Bay (1991-1996)

Data holding centreCentre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory
CountryUnited Kingdom  United Kingdom
Time periodFrom December 1991 to December 1996
OngoingNo
Geographical area

Liverpool Bay 3° 50'W to 4° 10'W and south of 53° 30'N

Observations 
Parameters

Fauna abundance per unit area of the bed; Sediment grain size parameters; Seabed photography; Sediment water content, porosity and surface area; Zoobenthos taxonomic abundance; Zoobenthos taxonomy-related counts; Geological sample density

Instruments

Underwater cameras; pelagic trawl nets; sediment grabs; rock dredges

Description 
Summary

Both short and long-term experiments have been set up to examine the effects of the passage of a 4m commercial beam trawl over the seabed. Examination of the infauna and epifauna will yield information on potential community effects attributable to fishing activity. Studies of the survival of animals caught in, and passing through the meshes of the net, addresses concern about by-catch mortality. Concomitantly, studies of the feeding behaviour of certain scavenging species indicates whether these may benefit directly from the by-product of fishing activities.

OriginatorsCentre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory
Data web sitehttp://www.cefas.co.uk/
Availability 
OrganisationCentre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory
AvailabilityLicence
ContactContracts Office, CEFAS, Lowestoft
Address

Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory
Pakefield Road
Lowestoft
Suffolk
NR33 OHT
United Kingdom

Telephone+44 1621 562244
Facsimile+44 (0)1502 513865
Administration 
Collating centreBritish Oceanographic Data Centre
Local identifier1029003
Global identifier389
Last revised2009-05-22