| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Tridens II | wk 23-25/2005 | 06.06.2005 - 24.06.2005 | North Sea |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Eltink A. | Rijksinstituut voor Visserijonderzoek, Netherlands Institute for Fisheries Research | Scheveningen | Scheveningen |
Ziel der Reise / Objectives of Cruise:
During the North Sea Mackerel Egg Survey plankton samples are collected by the Netherlands and Norway in order to estimate the spawning stock biomass of North Sea Mackerel. In four successive weeks the spawning area is covered by the egg surveys of the Netherlands and Norway. The total egg production will be converted to spawning stock biomass by using fecundity data. This information is important for the ICES Mackerel, Horse Mackerel Sardine and Anchovy Working Group. Pelagic trawl hauls habe been carried out for obtaining biological samples of mackerel. In addition hydrographical data have been collected using a CTD.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| RIVO | Eltink A. | 3 | hauls | B14 Pelagic fish |
biological age samples of mackerel collected with pelagic trawl (total of 50 otoliths collected) | no |
| RIVO | Eltink A. | 153 | hauls | B14 Pelagic fish |
double oblique hauls with Gulf III plankton sampler | no |
| RIVO | Eltink A. | 153 | stations | H10 CTD-Stations |
CTD profiles collected during plankton sampling | no |