Jochen Bellebaum, Szymon Bzoma, Mindaugas Dagys, Jan Durinck, Stefan Garthe, Gennady Grishanov, Martti Hario, Stefan Heinänen, Jan Jacob Kieckbusch, Ib Krag Petersen, Jan Kube, Andres Kuresoo, Kjell Larsson, Leho Luigujoe, Wodzimierz Meissner, Markku Mikkola Roos, Leif Nilsson, Stefan Pihl, Henrik Skov, Nicole Sonntag, Antra Stipniece, Andy Stock, Hans W. Nehls, and Ramnas Žydelis
Nordic Council of Ministers
This report outlines the results of the internationally coordinated census of wintering waterbirds in the Baltic Sea 2007-2009 undertaken under the SOWBAS project (Status of wintering Waterbird populations in the Baltic Sea). The estimated total number of wintering waterbirds was 4.41 million compared to 7.44 million during the last co-ordinated census 1992-1993. Despite the general declines stable or increasing populations of herbivorous species were recorded. While benthic carnivores with a coastal distribution have either shown moderate declines, stable or increasing populations seaducks with an offshore distribution have declined seriously. Based on analyses of trends in wintering waterbirds and pressures indicators are suggested as performance indicators in relation to the international and national actions taken to reduce the anthropogenic pressures in the Baltic Sea.