Deutsches Ozeanographisches
Datenzentrum Inventur der Alkor-Reise AL462 (DOD-Ref-No.20150058)
Inventory of Alkor Cruise AL462 (DOD-Ref-No.20150058)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Alkor AL462 16.08.2015 - 31.08.2015 BONUS BIO-C3
 
Arkona Basin Gdansk Bight Baltic Sea Gotland Basin Kiel Bight Bornholm Basin  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Herrmann Jens-Peter Institut fur Hydrobiologie und Fischereiwissenschaft der Universitat Hamburg Gdynia Kiel   

Ziel der Reise / Objectives of Cruise:

The cruise is conducted as a training course for advanced students at the IHF in the context of the master course of Marine Ecosystem and Fisheries Science at Hamburg University. On the cruise 6 students were trained on frequently used fisheries science and biological oceanography methods. The cruise was designed according to the standards of scientific cruises and coupled to ongoing research activities of the institute. The more advanced students can undertake sampling for the own master or PhD thesis. Students in earlier stages will be trained with specific small training projects as e.g. measuring the hydrography with CTD casts, which they will present as a report as well as a presentation in the synthesis seminar after the cruise. The cruise was designed to get informations about the fish and plankton distribution between the Kiel Bight and the Gotland Basin in the Baltic Sea. One important aspect was the recording of the planktonic prey of larval and adult lifestages of sprat and cod in different basins of the Baltic Sea with a Video-Plankton-Recorder (VPR) to get informations about small scale patchiness in zoopankton distribution and for the parameterisation of prey fields as input for consumption models. At the same time CTD and Bongo net sampling was performed to investigate the spatial distribution and development of zoo- and ichthyoplankton and its hydrographic environment. Another aspect was the investigation of spawning intensity of cod in the Bornholm Basin and the investigation of round goby vertical distribution.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
IHFHH Herrmann Jens-Peter 3 hauls B09
Zooplankton
Apstein net, zooplankton sampling, vertical haul. no
IHFHH Herrmann Jens-Peter 10 hauls B09
Zooplankton
WP-2 net, zooplankton sampling, vertical haul. no
IHFHH Herrmann Jens-Peter 11 profiles B09
Zooplankton
Video-Plankton-Recorder, towed at 3 knots, undulating. no
IHFHH Herrmann Jens-Peter 25 hauls B09
Zooplankton
Multiple Closing Net, 5 nets closed in different water depth. no
IHFHH Herrmann Jens-Peter 17 hauls B13
Eggs/larvae
Helgolander Larvennetz, vertical haul. no
IHFHH Herrmann Jens-Peter 59 hauls B14
Pelagic fish
Pelagic fisheries with "Jungfishtrawl"-net. no
IHFHH Herrmann Jens-Peter 24 stations H10
CTD-Stations
CTD casts (temperature, salinity, oxygen). no
23.3.2024