Biochemical processes in upwelling zones of the Baltic Sea - Cruise No. M117 - July 23 - August 17, 2015 - Hamburg (Germany) - Rostock (Germany) (English)

  • ISSN:
  • Report  /  Electronic Resource

How to get this document?

Free access

The overall objective of cruise M117 was to investigate biochemical processes in upwelling zones. Upwelled water is characterized by re-mineralized nutrients, CO2-supersaturation, cold temperature and enhanced primary productivity. The phenomenon of upwelling is of interest to several research activities of working groups (WP) of the participating research institutes. Therefore, the cruise M117 has been an efficient approach to understand potentially interconnected biochemical processes within upwelling systems of the Baltic Sea. Research activities include phosphorus availability for harmful cyanobacteria blooms (WP1), air-sea CO2 exchange (WP2), marine aerosol formation (WP3), mercury species distribution and Hg sea-air gas exchange (WP4), and energy turnover of zooplankton communities along food quality gradients (WP5). The research activities rely on supplementary data of nutrients and phytoplankton composition. For this reason the research activities during cruise M117 have been combined with monitoring programs conducted regularly by IOW on behalf of the Federal Maritime and Hydrography Agency (BSH) and of the Helsinki Commission (HELCOM).