Meadows and mussels – The relationship between historical irrigation systems and the habitat of the freshwater pearl mussel Margaritifera margaritifera (L.)

Abstract

Conceptual meadow irrigation is a historically prominent land use practice, that contributed decisively to the landscape. It enhances land-water-connectivity and might directly interact with habitats of Margaritifera margaritifera (L.). The aim of the presented study was to investigate, if there is a spatial correlation in the distribution of conceptual meadow irrigation and M. margerigtifera. We therefore digitalized the distribution of both in the German Federal Republic in GIS. This revealed a 68% overlap of map quarters with records of the Freshwater Pearlmussel with those, where conceptual meadow irrigation was practiced. With our findings we want to draw the readers attention to the potential of this land use practice for ecosystem functioning.