Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Walther Herwig III	WH372	23.01.2014 - 23.02.2014	IBTS	North Sea

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Kloppmann Matthias	Institut fur Seefischerei der VTIG Hamburg	Bremerhaven	Bremerhaven

Ziel der Reise / Objectives of Cruise:

The cruise is the German contribution to the International Bottom Trawl Survey, 1st quarter, in the North Sea, Skagerrak and Kattegat. The main objectives are to: ? To determine the distribution and relative abundance of pre-recruits of the main commercial species with a view of deriving recruitment indices; ? To monitor changes in the stocks of commercial fish species independently of commercial fisheries data; ? To monitor the distribution and relative abundance of all fish species and selected invertebrates; ? To collect data for the determination of biological parameters for selected species; ? To collect hydrographical and environmental information; ? To determine the abundance and distribution of late herring larvae. Methods: ? Trawl hauls in allocated ICES statistical rectangles by means of the ICES standard bottom trawl GOV during daytime, one haul per rectangle ? Plankton hauls with a standardized 2 m midwater ring trawl (MIK) to a maximum depth of 100 m during nighttime, two hauls per rectangle. ? One CTD cast per each rectangle with a Seabird SBE 911 for hydrographical data ? Water bottle samples per each rectangle for microzooplankton concentration The survey was severely hampered by prevailing bad weather so that only 46 of the 77 assigned ICES rectangles could be sampled

Messungen / Measurements