| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Salling | Sandeel 2014 | 21.11.2014 - 14.12.2014 | North Sea |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Olesen Hans | Technical University of Denmark National Institute of Aquatic Resources | Esbjerg | Esbjerg |
Ziel der Reise / Objectives of Cruise:
The purpose of the sand eel dredge survey was to collect sand eels buried in the seabed and compare catches (number and age composition) with the previous year's collections to assess the 2014 year class strength of sand eel in the different areas adopted by ICES in 2009. Data from the dredge survey is the basis for calculating a 0-group index, which will be used in stock assessment. In addition, it was the aim to validate/quality ensure each haul using bottom contact sensors mounted on the gear (dredges).
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| DTUAQU | Olesen Hans | 1 | stations | G01 Dredge |
On each sampling location three hauls were carried out with the modified mussel dredge according to descriptions for fishing with modified mussel dredge used since 2004. The DK II dredge was used as the primary gear and the DK I and DK IV dredge served as 'back-up'.. | no |
| DTUAQU | Olesen Hans | 1 | samples | G02 Grab |
On new sample locations sediment samples were taken with the Van Veen grab (0.2m2), for the determination of grain size composition i.e. whether the bottom could be classi-fiedas a suitable habitat for sand eel (e.g. could a very fine-grained sediment be unfit as overwintering habitat).. | no |