Publikationen

Volker Otte et al.

zurück

Volker Otte Senckenberg Museum für Naturkunde,
Postfach 300 154, 02806 Görlitz, Germany


PDF
Karin Diedrich Senckenberg Museum für Naturkunde,
Postfach 300 154, 02806 Görlitz, Germany


 
Ulrike Beck Senckenberg Museum für Naturkunde,
Postfach 300 154, 02806 Görlitz, Germany


 

 

Umweltmonitoring mit Flechten in der Euroregion Neiße


Abstract

Environmental monitoring with lichens in the Euroregion Neiße
In the Euroregion Neiße epiphytic macrolichen vegetation had become destroyed nearly totally due to industrial air pollution, in particular SO2 and fly-ash, until the end of the 20th century. Meanwhile reimmigration takes place. We compared historic and current lichen flora of two areas whose previous lichen flora is well documented. In the area with reference collections from around the year of 1800 (Meffersdorf/Unięcice in the Iser Mts.) the decline in species number is higher than in the area with reference collections from around the year of 1900 (Rothwasser/Czerwona Woda in the Görlitzer Heide forest). This is explained by the presence of ancient woodland species among the specimens collected in the Iser Mts. around 1800, whereas they were widely absent in the Görlitzer Heide forest already around 1900. In both areas, the historical records include species with very low toxitolerance, which were not found now. Apart from these species groups, species numbers are nearly equal now compared with the historical data in both areas. However, species composition has changed by about 40 %. Impact of climate change cannot be shown, which might be influenced by the fact that data on quantitative shifts are not available. Observed qualitative changes might be accidentally in the case of rare or inconstant species. But probably they also reflect the considerable changes in structure and tree species composition of the forests. For more precise conclusions, further monitoring should be based on a sufficient number of monitoring sites, which are ecologically characterised and precisely located, and the abundancies of the species should be noted. However, in order to further use the historical data for comparison purposes, in the historically better studied areas also in future a complete documentation of the species also outside the monitoring sites should be done.

Keywords

Lichen reimmigration | air pollution dynamics | climate change | land use dynamics | Iser Mountains | Görlitzer Heide forest


zurück

https://die-welt-baut-ihr-museum.de