European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

IMARES, Acoustic Herring Survey (ASH) (2002-)

Data holding centreIMARES, Wageningen UR, Institute for Marine Resources and Ecosystem Studies, IJmuiden
CountryNetherlands  Netherlands
ProjectNS Herring Acoustic Survey(NHAS)
Time periodYearly sampling in July (4 wks) since 2002
OngoingYes
Geographical area

Western North Sea

Observations 
Parameters

Fish taxonomy-related abundance per unit area of the bed; Fish taxonomy-related counts; Raw temperature and/or salinity instrument output

Instruments

Multi-beam echosounders; pelagic trawl nets; balances and scales; rulers; CTD

Description 
Summary

Its main purpose is to provide an abundance estimate of the North Sea herring (Clupea harengus) population via hydro acoustic surveying. The estimate is used as a tuning index by the ICES Herring Assessment Working Group (HAWG) in its assessment of the North Sea herring stock size, thus contributing to management advice. The survey is carried out annually in June-July, covering both herring spawning period and spawning area in the North Sea, Skagerrak and Kattegat. Sprat (Sprattus sprattus) is also a target species, but the abundance estimate is not used for the stock assessment. In recent years a strong ecosystem approach has been developed monitoring also birds, plankton and hydrography.

OriginatorsIMARES, Wageningen UR, Institute for Marine Resources and Ecosystem Studies, IJmuiden
Availability 
OrganisationIMARES, Wageningen UR, Institute for Marine Resources and Ecosystem Studies, IJmuiden
AvailabilityDistribution cost charge
ContactIngeborg de Boois
Address

IMARES, Wageningen UR, Institute for Marine Resources and Ecosystem Studies, IJmuiden
Haringkade 1
IJmuiden

1976 CP
Netherlands

Telephone+31 317480900
Facsimile+31 317487326
Emailingeborg.deboois@wur.nl
Administration 
Collating centreNational Oceanographic Data Committee
Local identifierIMARES_5760002
Global identifier4805
Last revised2011-02-24