Rösch, Verena

[["dc.bibliographiccitation.firstpage","1204"],["dc.bibliographiccitation.issue","10"],["dc.bibliographiccitation.journal","Diversity and Distributions"],["dc.bibliographiccitation.lastpage","1217"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Kormann, Urs"],["dc.contributor.author","Rösch, Verena"],["dc.contributor.author","Batáry, Péter"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Orci, Kirill Márk"],["dc.contributor.author","Samu, Ferenc"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.editor","Kühn, Ingolf"],["dc.date.accessioned","2017-09-07T11:50:43Z"],["dc.date.available","2017-09-07T11:50:43Z"],["dc.date.issued","2015"],["dc.description.abstract","AimBiodiversity across the globe is heavily eroded by intensified management at local and landscape scales. Species communities of calcareous grasslands, which are among Europe's most diverse habitats, are severely threatened by the cessation of appropriate traditional management, loss of habitat connectivity and simplification of the surrounding landscape. However, our understanding of these often interrelated factors remains limited, in particular for trait-mediated responses across taxa. Here, we test the independent effects of local management (grazing, mowing and abandonment), habitat connectivity (measured by a connectivity index) and landscape complexity (indicated by the percentage of arable land) on nine taxa: plants, butterflies, bees, grasshoppers, hoverflies, spiders, true bugs, rove beetles and leafhoppers on small semi-natural calcareous grassland remnants (< 1 ha).LocationCentral Germany.MethodsWe use a joint analysis across taxa to identify general and trait-mediated responses (body size and Red List status) in species richness, abundance and community composition.ResultsWe identified three key drivers of local diversity patterns: First, an increasing proportion of arable land from 10% to 80% led to a 29% loss of overall species richness. Second, despite differences between taxa, increasing habitat connectivity generally enhanced species richness. Connectivity effects were more accentuated in the large species per taxon, which can be expected to be good dispersers. Finally, grazing reduced species richness and abundance much more than annual mowing or short-term abandonment (5–15 years), in particular for red-listed species. We attribute this to plant resource removal through overgrazing and trampling.Main conclusionsFor the conservation management of small calcareous grasslands, we advocate an alternating strategy of mowing or lenient grazing and short-term abandonment, prioritizing connected fragments surrounded by diverse landscapes. Despite taxon-specific responses, our study across nine taxa demonstrates universal, trait-mediated effects of management, landscape complexity and connectivity on local biodiversity in fragmented communities."],["dc.identifier.doi","10.1111/ddi.12324"],["dc.identifier.gro","3149889"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6597"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1366-9516"],["dc.title","Local and landscape management drive trait-mediated biodiversity of nine taxa on small grassland fragments"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","127"],["dc.bibliographiccitation.journal","Agriculture, Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","133"],["dc.bibliographiccitation.volume","235"],["dc.contributor.author","Madeira, Filipe"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Elek, Zoltán"],["dc.contributor.author","Kormann, Urs G."],["dc.contributor.author","Pons, Xavier"],["dc.contributor.author","Rösch, Verena"],["dc.contributor.author","Samu, Ferenc"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Batáry, Péter"],["dc.date.accessioned","2017-09-07T11:50:10Z"],["dc.date.available","2017-09-07T11:50:10Z"],["dc.date.issued","2016"],["dc.description.abstract","Spillover effects of organisms from semi-natural habitats to adjacent crops have been frequently reported, yet evidence for the reversed process and associated functional consequences remains scarce. We examined the spillover of carabids, rove beetles and spiders from agricultural lands to protected, high-nature value calcareous grasslands by comparing two neighbourhood types: seven calcareous grasslands neighbouring intensively managed winter wheat fields and seven calcareous grasslands neighbouring intensively managed meadows in Germany. We examined arthropod activity density with repeated pitfall trapping in both the edge and the interior of all three habitat types (14 study sites). All three arthropod groups showed consistently higher activity density in calcareous grasslands adjacent to wheat fields than calcareous grasslands adjacent to meadows, apparently through spillover effects. Activity density of carabids and spiders exhibited a decline from the interior to the edge of the wheat fields and to even lower density at the edge and lowest density in the interior of the calcareous grassland. Carabid spillover from both neighbouring habitats to grasslands was driven by a dominant predatory species, Pterostichus melanarius, whereas Oedothorax apicatus was the dominant contributor to spider spillover from wheat to grasslands. Our results show that neighbourhood identity (wheat or meadow) can shape arthropod density and community composition in semi-natural habitats due to spillover of carabid beetles, spiders and rove beetles from adjacent crop fields. Neighbourhood effects on spillover are thus more accentuated at the cropland-grassland interface compared to the meadow-grassland boundary, with small grasslands being particularly affected due to their high edge-to-interior ratios. Our results suggest that meadows around high-nature value, protected grassland reserves, may be important conservation elements by attenuating arthropod spillover from arable crops. Such spillover may compromise the identity, structure and functioning of endangered communities."],["dc.identifier.doi","10.1016/j.agee.2016.10.012"],["dc.identifier.gro","3149854"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6558"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","0167-8809"],["dc.title","Spillover of arthropods from cropland to protected calcareous grassland – the neighbouring habitat matters"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]