Neue Libellenfunde aus der Niederschlesischen Heide (Bory Dolnośląskie) in Polen (Anna Rychła)

In der Arbeit werden Ergebnisse der fortgeführten Libellenkartierung in den Jahren 2015 und 2016 in drei MoorNaturschutzgebieten („Zacisze“, „Przygiełkowe Moczary“ und „Żurawie Bagno“) in der Niederschlesischen Heide dargestellt. Insgesamt konnten 41 Arten nachgewiesen werden. Acht Arten wurden neu nachgewiesen, darunter sechs Arten mediterraner Herkunft. Die Beobachtung von Orthetrum albistylum (Selys, 1848) zeigt, dass diese Art bereits die westliche Grenze Polens erreicht hat und eine weitere Expansion nach Ostdeutschland zu erwarten ist. Die Untersuchungen erbrachten keine neuen Funde von Aeshna subarctica Walker, 1908 im Untersuchungsgebiet; somit bleibt der Status dieser Art immer noch unklar. Von den seltenen Arten wurde Leucorrhinia caudalis (Charpentier, 1840) im NSG „Zacisze“ belegt. Es ist die erste Feststellung dieser Art in der Niederschlesichen Heide und soweit die einzige im südlichen Teil der Lubuskie Woiwodschaft; jedoch bleibt der Status noch unbekannt. Die Studie bestätigt, dass die Biodiversität in den Schutzgebieten sehr hoch ist. Die thermophilen Arten tragen zur Erhöhung der lokalen Diversität in den Mooren bei, sind jedoch gleichzeitig regional neue Faunenelemente, die eine starke Veränderung der moorigen Libellengemeinschaft verursachen können. Zur Beobachtung dieser Entwicklung sind weitere systematische Erfassungen in den Gebieten notwendig. Abstract In this study, the results of the investigation of Odonata, conducted in the years 2015 and 2016 in three boggy protected areas („Zacisze“, „Przygiełkowe Moczary“ und „Żurawie Bagno“) of the Lower Silesian Wilderness are presented. A total of 41 species was found. There were eight species new for the investigated area, six of which were of Mediterranean origin. The observation of Orthetrum albistylum (Selys, 1848) shows that this species has already reached the western border of Poland and a further expansion to Germany is to expected. The investigations did not reveal any new findings of Aeshna subarctica Walker, 1908 in the area, so the status of this species is still unclear. Of the rare species the new record of Leucorrhinia caudalis (Charpentier, 1840) in the NSG "Zacisze" was demonstrated. It is the first observation of this species in the Lower Silesian Wilderness and as far as the only one in the southern part of Lubuskie Voivodeship, but the status of the species remains unknown. The study confirms that the biodiversity in the areas is very high. The thermophilous species increase the local diversity in the peat bogs on one hand, but they are also regionally new faunal elements, which may cause strong changes in the bog’s dragonfly community on the other hand. Therefore, further systematic research in the peat bogs in this area is necessary.

In this study, the results of the investigation of Odonata, conducted in the years 2015 and 2016 in three boggy protected areas („Zacisze“, „Przygiełkowe Moczary“ und „Żurawie Bagno“) of the Lower Silesian Wilderness are presented. A total of 41 species was found. There were eight species new for the investigated area, six of which were of Mediterranean origin. The observation of Orthetrum albistylum (Selys, 1848) shows that this species has already reached the western border of Poland and a further expansion to Germany is to expected. The investigations did not reveal any new findings of Aeshna subarctica Walker, 1908 in the area, so the status of this species is still unclear. Of the rare species the new record of Leucorrhinia caudalis (Charpentier, 1840) in the NSG "Zacisze" was demonstrated. It is the first observation of this species in the Lower Silesian Wilderness and as far as the only one in the southern part of Lubuskie Voivodeship, but the status of the species remains unknown. The study confirms that the biodiversity in the areas is very high. The thermophilous species increase the local diversity in the peat bogs on one hand, but they are also regionally new faunal elements, which may cause strong changes in the bog’s dragonfly community on the other hand. Therefore, further systematic research in the peat bogs in this area is necessary.