Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Alkor	320	31.05.2008 - 11.06.2008	UNCOVER EUROCEANS	Baltic Sea NE Atlantic (Limit 40?W)

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Schaber Matthias	Leibniz-Institut fur Meereswissenschaften an der Universitat Kiel	Kiel	Kiel

Ziel der Reise / Objectives of Cruise:

Physical, chemical, biological research and fishery oceanography This multidisciplinary cruise was conducted within the framework of different projects, i) UNCOVER 'Understanding the Mechanisms of Stock Recovery', ii) EUROCEANS and iii) AQUASHIFT 'The impact of climate variability on aquatic ecosystems'. The different research activities were focussed on the Bornholm Basin. Additionally CTD, bongo and vertical multinet stations in the Arkona Basin and CTD and Bongo stations in the Slupsk Furrow were conducted. The survey considered investigations on different plankton distributions, incl. phyto-, zoo- and ichthyoplankton as well as on pelagic clupeid and gadoid fish. The physical measurements of this cruise were designed to investigate the quasi-synoptic three-dimensional distribution of temperature, salinity and oxygen. Within the framework of the aforementioned projects the data will be utilized to initialize a three-dimensional baroclinic eddy-resolving circulation model of the Baltic Sea. Other major goals were the description of abundance, biomass, production and nutritional condition of phyto-, zoo- and ichthyoplankton. Further emphasis was given on the meso- to small-scale horizontal and distribution of their main predator fish species herring and sprat. Additionally, spatial and vertical distribution, stock structure, gonadal maturation, egg production and survival of sprat and cod were investigated. Another focal point of the cruise was the investigation of the

Messungen / Measurements