Waterbird Populations and Pressures in the Baltic Sea

image of Waterbird Populations and Pressures in the Baltic Sea

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.



Conservation status of wintering waterbirds in the Baltic Sea

In table 27 an overview is given of the population estimates for all wintering waterbirds covered by this status report. In addition to listing the estimated totals for the surveys during the two periods 2007–2009 and 1992–1993 the table also gives proportions of the total bio-geographic populations wintering in the Baltic Sea during these two periods. Of the 20 species of waterbirds covered the total population size has decreased between the two periods for 11 species; 7 of which have declined seriously by more than 30% in 16 years.


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