Deutsches Ozeanographisches
Datenzentrum
Inventur der Clupea 1-Reise 234 (DOD-Ref-No.20120054)
Inventory of Clupea 1 Cruise 234 (DOD-Ref-No.20120054)
Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
---|---|---|---|---|
Clupea 1 | 234 | 15.03.2010 - 02.07.2010 | RHLS |
Baltic Sea Greifswalder Bodden Western Baltic Sea |
Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
---|---|---|---|---|---|
Zimmermann Christopher | Thunen-Institut fur Ostseefischerei | Rostock | Rostock |
Ziel der Reise / Objectives of Cruise:
The German Institute of Baltic Sea Fisheries (vTI-OSF), Rostock annually monitors the density of herring larvae within the framework of the Rugen Herring Larvae Survey (RHLS). Main aim of the survey is the delivery of a recruitment index for the assessment of the Western Baltic spring spawning herring by ICES working groups, used since 1991. It also provides a high-resolution dataset on the herring larvae ecology in the Western Baltic, both temporally and spatially. A sampling grid including 36 stations is sampled weekly using ichthyoplankton- gear (Bongo-net) during the main recruitment period from March to June. Additional surveys are conducted in February and November to control for early spawning events and for autumn spawning, respectively. The weekly assessment of the entire sampling area is conducted within two consecutive days. The data collected provide an important baseline for detailed investigation of spawning- and recruitment ecology of Western Baltic spring spawning herring stocks.
Messungen / Measurements
Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
VTIOSF | Zimmermann Christopher | 5 | stations | B08 Phytoplankton |
55 ?m Apstein net | no |
VTIOSF | Zimmermann Christopher | 36 | stations | B09 Zooplankton |
Ichthyoplankton, 335?m, Bongo-net | no |
VTIOSF | Zimmermann Christopher | 36 | stations | B09 Zooplankton |
Ichthyoplankton, 780?m, Bongo-net | no |
VTIOSF | Zimmermann Christopher | 36 | stations | B13 Eggs/larvae |
Ichthyoplankton, 335?m, Bongo-net | no |
VTIOSF | Zimmermann Christopher | 36 | stations | B13 Eggs/larvae |
Ichthyoplankton, 780?m, Bongo-net | no |
VTIOSF | Zimmermann Christopher | 36 | stations | D01 Current meters |
Hydrobios flow meter | no |
VTIOSF | Zimmermann Christopher | 36 | stations | D90 Other physical oceanographic measurements |
Turbidity , Secchi Depth | no |
VTIOSF | Zimmermann Christopher | 36 | stations | H10 CTD-Stations |
CTD, DO [mg/l] | no |
VTIOSF | Zimmermann Christopher | 36 | stations | H10 CTD-Stations |
CTD, SST, Sal | no |
VTIOSF | Zimmermann Christopher | 36 | stations | H10 CTD-Stations |
CTD, SST, Sal. | no |
VTIOSF | Zimmermann Christopher | 36 | stations | H11 Sub-surface measurements underway (T, S) |
CTD, SST, Sal | no |
VTIOSF | Zimmermann Christopher | 36 | stations | H21 Oxygen |
CTD, DO [mg/l] | no |
VTIOSF | Zimmermann Christopher | 36 | stations | H71 Surface measurements underway (T, S) |
CTD, SST, Sal | no |
VTIOSF | Zimmermann Christopher | 36 | stations | M06 Routine standard measurements |
Barometric pressure | no |
VTIOSF | Zimmermann Christopher | 36 | stations | M06 Routine standard measurements |
Weather data according to EU-DCR/DCF | no |