Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Heincke	HE381	06.06.2012 - 13.06.2012	ECODRIVE	North Sea

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Gloe Dominik	Institut fur Hydrobiologie und Fischereiwissenschaft der Universitat Hamburg	Helgoland	Bremerhaven	Karte Map

Ziel der Reise / Objectives of Cruise:

Current understanding of the drivers of changes in North Sea ecosystem structure and function lacks a sufficient knowledge on historical (+50 years) ecosystem states in relation to climate, eutrophication and fisheries. The projects ECODRIVE and RANGESHIVT will assess, model and further the predictive understanding of changes in the trophodynamic structure and function within the North Sea relative to the different drivers of ecosystem change. The key planctivores sardine and anchovy are not novel species in the North Sea merely extending their habitat due to global warming. These zooplanktivores were previously established in the system (i.e., 70 years ago) at a time when the Atlantic Multidecadal Oscillation was in the same phase as currently observed. However, information on hydrography-related distribution as well as diet and size-specific feeding of sardine and anchovy in the North Sea is largely absent, preventing an analysis of their trophic role in the North Sea ecosystem during warm phases. The ECODRIVE cruise will be used to (1) quantify the diet selectivity of these zooplanktivores species and their potential competitors (herring, sprat, sandeel, mackerel and horse mackerel) and to (2) assess their role as prey for the main pelagic piscivores, which co-invade into the North Sea especially during warm phases, i.e., horse mackerel and mackerel.

Messungen / Measurements