Dynamics and stability of reed-dominated ecosystems in relation to major environmental factors that are subject to global and regional anthropogenically induced changes.

Projektinformationen

EUREED II

ID Finanzhilfevereinbarung: ENV4950147

Projekt abgeschlossen

Startdatum 1 Februar 1996

Enddatum 30 April 1999

Finanziert unter

• Specific programme of research and technological development in the field of environment and climate, 1994-1998

Gesamtkosten

Keine Daten

EU-Beitrag

Keine Daten

Koordiniert durch

Århus Universitet
Denmark

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Leistungen

The functional dynamics and stability of reed-dominated wetlands depend on anthropogenically induced environmental changes and management practices

Summary: The Common Reed (Phragmites australis) is a principal plant species of much of the land-water ecotone through Europe and beyond. Its continuing presence in maintaining stability of river and lake margins and as a sanctuary for wildlife is of major ecological and social importance. In common with other wetland ecosystems, it serves as a buffer ecosystems between terrestrial and aquatic ecosystems and as a source of trace gas emissions. Furthermore, reed-dominated wetlands have a direct commercial value as the reeds are harvested and used for thatching, cattle fodder, fence material etc. In recent years a rapid decline of Phragmites has been observed in many parts of Europe, with severe consequences for the multitude of functions these wetlands perform and for the commercial exploitation of the reeds. We studied the often fragile nature of Pharagmites-dominated ecosystems and highlighted the delicate balance between anthropogenic influences such as eutrophication and water-table management, which must exist for the species to survive. Furthermore, we explored the causes of die-back and attempted to establish the links between various environmental factors and the growth dynamics of the plant. Finally, based on the studies conducted, we suggested possible preventative measures, in order to avoid further die-back, and remedial actions necessary for the restoration of reed beds. The studies were conducted at reference wetland sites located along boreal-mediterranean and oceanic-continental gradient in Europe. The results may be exploited by any individuals, organizations and companies involved in wetland management and restoration.d