European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

English Channel Beam Trawl Survey (1988-)

Data holding centreCentre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory
CountryUnited Kingdom  United Kingdom
Time periodFrom 1988 onwards
OngoingYes
Geographical area

ICES Division 107D, eastern English Channel, and 104C, southern North Sea

Observations 
Parameters

Zooplankton and zoobenthos morphological parameters; Fish morphology, age and physiology; Fish abundance in water bodies; Fish taxonomy-related abundance per unit area of the bed; Fish taxonomy-related counts; Sediment grain size parameters; Salinity of the water column; Seabed photography; Temperature of the water column; Sediment water content, porosity and surface area; Zoobenthos taxonomic abundance; Zoobenthos taxonomy-related counts; Geological sample density; Zooplankton and zoobenthos development stage parameters

Instruments

Underwater cameras; pelagic trawl nets; sediment grabs

Description 
Summary

The data set comprises records of fish length and catch by fishing station. There are 87 fishing station positions, of which at least 80 are fished each year. All fish taken in the trawl are identified to species, measured, weighed and counted. The catch is subsampled where necessary. At all stations a photographic record of the substrate is taken using a forward- pointing 35mm camera attached to the beam trawl (1990-1997). A sample of the sediment is taken by Day Grab to calibrate the Roxanne system, in operation at all stations since 1992. Flatfish are otolithed by length category, from the entire area of 107D. Fishing station positions are distributed within each ICES rectangle, but the emphasis is on the shallow water areas.

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 identifier1029070
Global identifier449
Last revised2009-05-22