Deutsches Ozeanographisches
Datenzentrum
Inventur der Walther Herwig III-Reise 262 (DOD-Ref-No.20040118)
Inventory of Walther Herwig III Cruise 262 (DOD-Ref-No.20040118)
Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
---|---|---|---|---|
Walther Herwig III | 262 | 17.03.2004 - 22.04.2004 | WGMEGS |
Bay of Biscay North Atlantic Ocean |
Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
---|---|---|---|---|---|
Ulleweit Jens | Deutsche Wissenschaftliche Kommission fur Meeresforschung (DWK) im vTI (BFA) Hamburg | Bremerhaven | Bremerhaven | Karte Map |
Ziel der Reise / Objectives of Cruise:
The survey forms a part of an ICES-co-ordinated international study in the Eastern North Atlantic conducted during the first part of 2004. This investigation takes place trienially since the late seventies and is organised by the ICES Working Group WGMEGS.The main objective of this series of cruises from January until August is to produce both an index and a direct estimate of the biomass of the the north east Atlantic mackerel stock and the southern and western horse mackerel stocks. This survey is the only source providing fishery independent information of these stocks.The method is to quantify the freshly spawned eggs in the water column on the spawning grounds on the one hand. This is done by using a plankton sampler with an online probe. On the other hand the fecundity of the females must also be determined. This is done by sampling sufficient numbers of gonads by trawling.
Messungen / Measurements
Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
FRSML | Reid Dave | 196 | hauls | B08 Phytoplankton |
Plankton samples with modified Gulf III sampler + online CTD profiles with probe | no |
FRSML | Reid Dave | 196 | hauls | B13 Eggs/larvae |
Plankton samples with modified Gulf III sampleronline CTD profiles with probe | no |
FRSML | Reid Dave | 16 | hauls | B14 Pelagic fish |
Fishery hauls | no |
BFA | Ulleweit Jens | 41 | stations | H00 Stations |
- | yes |
FRSML | Reid Dave | 39 | casts | H09 Water bottle stations |
CTD- profiles and water bottles | no |
BFA | Stein Manfred | 39 | casts | H10 CTD-Stations |
CTD- profiles and water bottles | yes |