Die Niederschlesische Heide (Bory Dolnośląskie): ein Refugium für seltene Moorlibellen im Südwesten Polens?

Im Jahr 2014 wurden die Libellenarten der Gewässer der Moore im westlichen Teil der Niederschlesischen Heide an der deutsch-polnischen Grenze erfasst. Von besonderem Interesse waren regional seltene und nach polnischem Naturschutzrecht unter Schutz stehende Arten. Insgesamt konnten 39 Libellenarten nachgewiesen werden, von denen 26 Arten bodenständig waren. Dabei wurden vier gesetzlich geschützte Arten – Ophiogomphus cecilia (Geoffroy in Fourcroy, 1785), Aeshna subarctica Walker, 1908, Leucorrhinia albifrons (Burmeister, 1839), L. pectoralis (Charpentier, 1825) – sowie eine gefährdete Art – Orthetrum coerulescens (Fabricius, 1798), Kategorie NT – beobachtet. Weiterhin erfolgten im Rahmen der Kartierung der Libellen in Polen Erstnachweise für 14 Arten innerhalb der untersuchten UTM-Quadranten. Für O. coerulescens und Leucorrhinia rubicunda (Linnaeus, 1758) wurden die historischen Nachweise aus dem Erfassungszeitraum von „vor 1990“ (Bernard et al. 2009) aktualisiert. Die Ergebnisse zeigen, dass die untersuchten Gebiete eine bedeutende Libellendiversität haben. Besonders wertvoll sind die Erstnachweise von A. subarctica im Untersuchungsgebiet, die allerdings noch eines Entwicklungsnachweises bedürfen. Abstract In 2014, Odonata species were investigated in selected habitats, especially in peat bogs, in the western part of the Lower Silesian Wilderness on the German-Polish border. Of particular interest were regionally rare and species protected by Polish law. A total of 39 dragonflies species were observed and for 26 the development was confirmed. There were four legally protected species: Ophiogomphus cecilia (Geoffroy in Fourcroy, 1785), Aeshna subarctica Walker, 1908, Leucorrhinia albifrons (Burmeister, 1839) and L. pectoralis (Charpentier, 1825), and one endangered species Orthetrum coerulescens (Fabricius, 1798) – category NT in the area. Furthermore, first records for 14 species within the investigated UTM squares are provided. Further, for O. coerulescens and Leucorrhinia rubicunda (Linnaeus, 1758) historical observations from the field have been updated. The results show a significant dragonfly diversity in the studied areas. Especially valuable are the first records of A. subarctica in the field, however, they still require a confirmation of autochthony. IDF-Report 83 Published: 06.05.2015 | 1

In 2014, Odonata species were investigated in selected habitats, especially in peat bogs, in the western part of the Lower Silesian Wilderness on the German-Polish border. Of particular interest were regionally rare and species protected by Polish law. A total of 39 dragonflies species were observed and for 26 the development was confirmed. There were four legally protected species: Ophiogomphus cecilia (Geoffroy in Fourcroy, 1785), Aeshna subarctica Walker, 1908, Leucorrhinia albifrons (Burmeister, 1839) and L. pectoralis (Charpentier, 1825), and one endangered species Orthetrum coerulescens (Fabricius, 1798) – category NT in the area. Furthermore, first records for 14 species within the investigated UTM squares are provided. Further, for O. coerulescens and Leucorrhinia rubicunda (Linnaeus, 1758) historical observations from the field have been updated. The results show a significant dragonfly diversity in the studied areas. Especially valuable are the first records of A. subarctica in the field, however, they still require a confirmation of autochthony. IDF-Report 83 Published: 06.05.2015 | 1