Seasonal changes in bird communities of cultivated wetlands in Schleswig-Holstein/Germany | Vogelbestände kultivierten Feuchtlandes Schleswig-Holsteins im Jahreslauf
1998
Busche, Günther
The number of bird species and individuals were determined in 2 study plots (total 6,8 km² and 105 counts) in cultivated lowlands (grassland) of Schleswig-Holstein during 1976–1984. In order to estimate the total population of selected species additional comparison sites were surveyed. In total up to 219 km² (up to 1993) were surveyed. The average number of species observed each year was 37,4. On average 28% of the birds recorded each year were breeding species and 72% were non-breeders (of these 36% were breeding birds of the surrounding villages and woods and 36% were migrants and visitors). The average abundance was 48,1 individuals/10 ha. An almost complete exchange of non-breeders and local breeding birds occurs once a year. Estimated population sizes of dominant and characteristic species in Schleswig-Holstein are presented. Some lowland sites are very attractive habitats of international importance especially during the winter.
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