Deutsches Ozeanographisches
Datenzentrum
Inventur der Walther Herwig III-Reise WH442 (DOD-Ref-No.20210028)
Inventory of Walther Herwig III Cruise WH442 (DOD-Ref-No.20210028)
| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Walther Herwig III | WH442 | 05.01.2021 - 11.01.2021 | IHLS |
ICES-subarea VIId North Sea ICES-Subarea IVc |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Rohlf Norbert | Thunen-Institut fur Seefischerei | Bremerhaven | Bremerhaven |
Ziel der Reise / Objectives of Cruise:
The cruise was part of the ICES co-ordinated International Herring Larvae Surveys (IHLS) in 2020/21. The aim is to estimate the distribution and abundance of North Sea herring larvae for assessment purposes. The larvae samples are taken on a standard grid with a station to station distance of approx. 10 nm. Used gear is a modified GULF III plankton sampler (Nackthai). Area of investigation was the southern North Sea and parts of the English Channel. Samples were collected on 65 stations. Two stations had to be skipted because they are meanwhile inside the area of offshore wind farms. In addition to the larvae programme, nine 2 m beam trawls of the epibenthos fauna were sampled inside Box A in the German Bight. The cruise could be conducted as scheduled.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| VTISF | Rohlf Norbert | 65 | stations | B13 Eggs/larvae |
plankton and fish larvae catches / Nackthai. | no |
| VTISF | Neumann Hermann | 9 | stations | B18 Zoobenthos |
Epibenthos (2m Baumkurre) | no |
| VTISF | Rohlf Norbert | 2 | stations | H10 CTD-Stations |
CTD casts | no |
| VTISF | Rohlf Norbert | 24 | stations | H10 CTD-Stations |
towed CTD | no |