19 Gulf of Riga, the Baltic Sea

19 Pelagic eutrophication in the Gulf of Riga

Paul Wassmann
Norwegian College of Fishery Science
University of Tromsø
N-9037 Tromsø, NORWAY

• 19.1 Introduction
• 19.2 High input, low load
• 19.3 Variation in riverine loads
• 19.4 River runoff and atmospheric forcing
• 19.5 The Gulf is basically nitrogen-limited
• 19.6 Spatial variability of phytoplankton
• 19.7 Temporal vs. spatial variability
• 19.8 Moderate primary production, high respiration
• 19.9 Phytoplankton and vertical export of cells
• 19.10 The importance of microbial and viral loops in carbon cycling
• 19.11 P retention
• 19.12 Sources of settling material
• 19.13 Eutrophication in the Gulf of Riga: fiction or reality?

19 Gulf of Riga, the Baltic Sea