This paper describes shortly the results of a longterm monitoring programme of surface algal blooms by air surveys, and the possible factors that determine the scale and frequency of their occurrence. A new sampling strategy for surface algal blooms is also presented.
auteur(s): W. Zevenboom, J.E. Kamphuis; Ministry of Transport and Public Works Rijkswaterstaat, North Sea Directorate = Ministerie van Verkeer en Waterstaat, Rijkswaterstaat, Directie Noordzee