European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

Thames Estuary/River Blackwater Herring Survey (1989-)

Data holding centreCentre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory
CountryUnited Kingdom  United Kingdom
Time periodFrom 1989 onwards (in November)
OngoingYes
Geographical area

Thames Estuary/River Blackwater

Observations 
Parameters

Fish morphology, age and physiology; Fish abundance in water bodies; Fish taxonomy-related counts; Fish and shellfish catch statistics

Instruments

Pelagic trawl nets

Description 
Summary

The size of the recruiting year class of Blackwater herring is used to review the pre-season TAC. The estimate of recruitment is obtained from the November survey. Approximately 30 hauls are undertaken in the Thames Estuary and River Blackwater. Length measurements of the catch are taken as are otolith samples for age determination. Herring are identified as to stock origin and from this the relative size of the recruiting year class of Blackwater herring is obtained. This is then used to update the seasonal TAC set at the beginning of the fishery, the season opening on 1 October each year.

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 identifier1029065
Global identifier444
Last revised2009-05-22