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- 4805
IMARES, Acoustic Herring Survey (ASH) (2002-)
Data set information
| Query EDMED |
General | |
Data holding centre | Wageningen Marine Research, IJmuiden |
Country | Netherlands |
Project | NS Herring Acoustic Survey(NHAS) |
Time period | Yearly sampling in July (4 wks) since 2002 |
Ongoing | Yes |
Geographical area | Western North Sea |
Observations | |
Parameters | Fish taxonomy-related abundance per unit area of the bed; Raw temperature and/or salinity instrument output; Fish taxonomy-related counts |
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. |
Originators | Wageningen Marine Research, IJmuiden |
Availability | |
Organisation | Wageningen Marine Research, IJmuiden |
Availability | Distribution cost charge |
Contact | Ingeborg de Boois |
Address | Wageningen Marine Research, IJmuiden |
Telephone | +31 317480900 |
Facsimile | +31 317487326 |
ingeborg.deboois@wur.nl | |
Administration | |
Collating centre | National Oceanographic Data Committee |
Local identifier | IMARES_5760002 |
Global identifier | 4805 |
Last revised | 2011-02-24 |