Parcs

ID	TITEL	DATENTYP	AUTOR
37736	Botanik Nationalpark Neusiedler See - Seewinkel	Archive
37738	Entomologie Nationalpark Neusiedler See - Seewinkel	Archive
38196	Übungen zur funktionellen Ökologie	Project	Thomas Wrbka, Stefan Dullinger, Konrad Fiedler

Bemerkungen/Beschreibung

Abstract:
Extensively harvested grassland ecosystems contribute substantially to European biodiversity, but different kinds of grassland usage may selectively foster individual taxa. A combination of management options may offer a promising way to maximize biodiversity at the landscape scale. Here, we test this hypothesis based on 91 butterfly samples taken in the years 20132015 in differently managed areas within a large conservation area, the National Park Neusiedler See/Seewinkel in eastern-most Austria. Altogether, we recorded 4713 butterfly individuals of 35 species. Based on these records, we show that the parallelism of three management options, i.e. pasturing by mobile cattle herds, annual hay cut in early summer, and fallow land mulched in late summer, increase species diversity of butterflies and burnet moths in the regional metacommunity. Even though spatial distances between our sample sites were small compared to the activity ranges of adult butterflies, we found that species composition of butterfly and burnet assemblages  ignificantly differed between the three management options, indicating that assemblages were shaped by factors at the site level. Differences in species composition were stable across three consecutive years, even though there was annual variation in butterfly assemblages. Other tested co-variables (soil moisture, soil nitrogen, abundance of nectar flowers and local plant species richness) did not additionally contribute to explaining species composition of butterfly  communities. We conclude that maintaining a combination of three complementary management options is indeed a relevant strategy for biodiversity preservation in this internationally renowned conservation area.
Keywords: Biodiversity  Butterflies  Conservation  Management  Semi-natural grassland   Vegetation  Species composition

Department of Botany & Biodiversity Research, University of Vienna, Rennweg 14, 1030 Vienna, Austria

J Insect Conserv (2017) 21:277285
DOI 10.1007/s10841-017-9974-2

Eintrag Nr. 39526

Pluralism in grassland management promotes butterfly diversity in a large Central European conservation area