Sobek, Stephanie

[["dc.bibliographiccitation.firstpage","660"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Diversity and Distributions"],["dc.bibliographiccitation.lastpage","670"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Sobek, Stephanie"],["dc.contributor.author","Steffan-Dewenter, Ingolf"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:50:59Z"],["dc.date.available","2017-09-07T11:50:59Z"],["dc.date.issued","2009"],["dc.description.abstract","Aim  Plant and arthropod diversity are often related, but data on the role of mature tree diversity on canopy insect communities are fragmentary. We compare species richness of canopy beetles across a tree diversity gradient ranging from mono-dominant beech to mixed stands within a deciduous forest, and analyse community composition changes across space and time.Location  Germany’s largest exclusively deciduous forest, the Hainich National Park (Thuringia).Methods  We used flight interception traps to assess the beetle fauna of various tree species, and applied additive partitioning to examine spatiotemporal patterns of diversity.Results  Species richness of beetle communities increased across the tree diversity gradient from 99 to 181 species per forest stand. Intra- and interspecific spatial turnover among trees contributed more than temporal turnover among months to the total γ-beetle diversity of the sampled stands. However, due to parallel increases in the number of habitat generalists and the number of species in each feeding guild (herbivores, predators and fungivores), no proportional changes in community composition could be observed. If only beech trees were analysed across the gradient, patterns were similar but temporal (monthly) species turnover was higher compared to spatial turnover among trees and not related to tree diversity.Main conclusions  The changes in species richness and community composition across the gradient can be explained by habitat heterogeneity, which increased with the mix of tree species. We conclude that understanding temporal and spatial species turnover is the key to understanding biodiversity patterns. Mono-dominant beech stands are insufficient to conserve fully the regional species richness of the remaining semi-natural deciduous forest habitats in Central Europe, and analysing beech alone would have resulted in the misleading conclusion that temporal (monthly) turnover contributes more to beetle diversity than spatial turnover among different tree species or tree individuals."],["dc.identifier.doi","10.1111/j.1472-4642.2009.00570.x"],["dc.identifier.gro","3149959"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6673"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","1366-9516"],["dc.title","Spatiotemporal changes of beetle communities across a tree diversity gradient"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","772"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Ecological Entomology"],["dc.bibliographiccitation.lastpage","782"],["dc.bibliographiccitation.volume","34"],["dc.contributor.author","Sobek, Stephanie"],["dc.contributor.author","Goßner, Martin M."],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Steffan-Dewenter, Ingolf"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:53:58Z"],["dc.date.available","2017-09-07T11:53:58Z"],["dc.date.issued","2009"],["dc.description.abstract","1. Spatiotemporal patterns of canopy true bug diversity in forests of different tree species diversity have not yet been disentangled, although plant diversity has been shown to strongly impact the diversity and distribution of many insect communities.2. Here we compare species richness of canopy true bugs across a tree diversity gradient ranging from simple beech to mixed forest stands. We analyse changes in community composition by additive partitioning of species diversity, for communities on various tree species, as well as for communities dwelling on beech alone.3. Total species richness (γ-diversity) and α-diversity, and abundance of true bugs increased across the tree diversity gradient, while diversity changes were mediated by increased true bug abundance in the highly diverse forest stands. The same pattern was found for γ-diversity in most functional guilds (e.g. forest specialists, herbivores, predators). Temporal and even more, spatial turnover (β-diversity) among trees was closely related to tree diversity and accounted for ∼90% of total γ-diversity.4. Results for beech alone were similar, but species turnover could not be related to the tree diversity gradient, and monthly turnover was higher compared to turnover among trees.5. Our findings support the hypothesis that with increasing tree diversity and thereby increasing habitat heterogeneity, enhanced resource availability supports a greater number of individuals and species of true bugs. Tree species identity and the dissimilarity of true bug communities from tree to tree determine community patterns.6. In conclusion, understanding diversity and distribution of insect communities in deciduous forests needs a perspective on patterns of spatiotemporal turnover. Heterogeneity among sites, tree species, as well as tree individuals contributed greatly to overall bug diversity."],["dc.identifier.doi","10.1111/j.1365-2311.2009.01132.x"],["dc.identifier.gro","3150049"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6773"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0307-6946"],["dc.subject","Beta diversity; biodiversity conservation; canopy arthropods; Fagus sylvatica L.; functional groups; habitat heterogeneity"],["dc.title","Tree diversity drives abundance and spatiotemporal β-diversity of true bugs (Heteroptera)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","609"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Forest Ecology and Management"],["dc.bibliographiccitation.lastpage","615"],["dc.bibliographiccitation.volume","258"],["dc.contributor.author","Sobek, Stephanie"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Schiele, Susanne"],["dc.contributor.author","Steffan-Dewenter, Ingolf"],["dc.date.accessioned","2017-09-07T11:53:59Z"],["dc.date.available","2017-09-07T11:53:59Z"],["dc.date.issued","2009"],["dc.identifier.doi","10.1016/j.foreco.2009.04.026"],["dc.identifier.gro","3150043"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6767"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","0378-1127"],["dc.title","Canopy vs. understory: Does tree diversity affect bee and wasp communities and their natural enemies across forest strata?"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]