Klein, Alexandra Maria

[["dc.bibliographiccitation.firstpage","223"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","237"],["dc.bibliographiccitation.volume","173"],["dc.contributor.author","Allan, Eric"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Fischer, Markus"],["dc.contributor.author","Schulze, Ernst-Detlef"],["dc.contributor.author","Weigelt, Alexandra"],["dc.contributor.author","Roscher, Christiane"],["dc.contributor.author","Baade, Jussi"],["dc.contributor.author","Barnard, Romain L."],["dc.contributor.author","Beßler, Holger"],["dc.contributor.author","Buchmann, Nina"],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Eisenhauer, Nico"],["dc.contributor.author","Engels, Christof"],["dc.contributor.author","Fergus, Alexander J. F."],["dc.contributor.author","Gleixner, Gerd"],["dc.contributor.author","Gubsch, Marlén"],["dc.contributor.author","Halle, Stefan"],["dc.contributor.author","Klein, Alexandra Maria"],["dc.contributor.author","Kertscher, Ilona"],["dc.contributor.author","Kuu, Annely"],["dc.contributor.author","Lange, Markus"],["dc.contributor.author","Le Roux, Xavier"],["dc.contributor.author","Meyer, Sebastian T."],["dc.contributor.author","Migunova, Varvara D."],["dc.contributor.author","Milcu, Alexandru"],["dc.contributor.author","Niklaus, Pascal A."],["dc.contributor.author","Oelmann, Yvonne"],["dc.contributor.author","Pašalić, Esther"],["dc.contributor.author","Petermann, Jana S."],["dc.contributor.author","Poly, Franck"],["dc.contributor.author","Rottstock, Tanja"],["dc.contributor.author","Sabais, Alexander"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Scherer-Lorenzen, Michael"],["dc.contributor.author","Steinbeiss, Sibylle"],["dc.contributor.author","Schwichtenberg, Guido"],["dc.contributor.author","Temperton, Vicky"],["dc.contributor.author","Voigt, Winfried"],["dc.contributor.author","Wilcke, Wolfgang"],["dc.contributor.author","Wirth, Christian"],["dc.contributor.author","Schmid, Bernhard"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:54:44Z"],["dc.date.available","2017-09-07T11:54:44Z"],["dc.date.issued","2013"],["dc.description.abstract","In order to predict which ecosystem functions are most at risk from biodiversity loss, meta-analyses have generalised results from biodiversity experiments over different sites and ecosystem types. In contrast, comparing the strength of biodiversity effects across a large number of ecosystem processes measured in a single experiment permits more direct comparisons. Here, we present an analysis of 418 separate measures of 38 ecosystem processes. Overall, 45 % of processes were significantly affected by plant species richness, suggesting that, while diversity affects a large number of processes not all respond to biodiversity. We therefore compared the strength of plant diversity effects between different categories of ecosystem processes, grouping processes according to the year of measurement, their biogeochemical cycle, trophic level and compartment (above- or belowground) and according to whether they were measures of biodiversity or other ecosystem processes, biotic or abiotic and static or dynamic. Overall, and for several individual processes, we found that biodiversity effects became stronger over time. Measures of the carbon cycle were also affected more strongly by plant species richness than were the measures associated with the nitrogen cycle. Further, we found greater plant species richness effects on measures of biodiversity than on other processes. The differential effects of plant diversity on the various types of ecosystem processes indicate that future research and political effort should shift from a general debate about whether biodiversity loss impairs ecosystem functions to focussing on the specific functions of interest and ways to preserve them individually or in combination."],["dc.identifier.doi","10.1007/s00442-012-2589-0"],["dc.identifier.gro","3150095"],["dc.identifier.pmid","23386044"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6825"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0029-8549"],["dc.title","A comparison of the strength of biodiversity effects across multiple functions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","323"],["dc.bibliographiccitation.journal","Advances in Ecological Research"],["dc.bibliographiccitation.lastpage","356"],["dc.bibliographiccitation.volume","61"],["dc.contributor.author","Manning, Peter"],["dc.contributor.author","Loos, Jacqueline"],["dc.contributor.author","Barnes, Andrew D."],["dc.contributor.author","Batáry, Péter"],["dc.contributor.author","Bianchi, Felix J. J. A."],["dc.contributor.author","Buchmann, Nina"],["dc.contributor.author","De Deyn, Gerlinde B."],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Eisenhauer, Nico"],["dc.contributor.author","Fischer, Markus"],["dc.contributor.author","Fründ, Jochen"],["dc.contributor.author","Grass, Ingo"],["dc.contributor.author","Isselstein, Johannes"],["dc.contributor.author","Jochum, Malte"],["dc.contributor.author","Klein, Alexandra M."],["dc.contributor.author","Klingenberg, Esther O. F."],["dc.contributor.author","Landis, Douglas A."],["dc.contributor.author","Lepš, Jan"],["dc.contributor.author","Lindborg, Regina"],["dc.contributor.author","Meyer, Sebastian T."],["dc.contributor.author","Temperton, Vicky M."],["dc.contributor.author","Westphal, Catrin"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2019-07-23T07:34:11Z"],["dc.date.available","2019-07-23T07:34:11Z"],["dc.date.issued","2019"],["dc.description.abstract","Biodiversity-ecosystem functioning (BEF) research grew rapidly following concerns that biodiversity loss would negatively affect ecosystem functions and the ecosystem services they underpin. However, despite evidence that biodiversity strongly affects ecosystem functioning, the influence of BEF research upon policy and the management of ‘real-world’ ecosystems, i.e., semi-natural habitats and agroecosystems, has been limited. Here, we address this issue by classifying BEF research into three clusters based on the degree of human control over species composition and the spatial scale, in terms of grain, of the study, and discussing how the research of each cluster is best suited to inform particular fields of ecosystem management. Research in the first cluster, small-grain highly controlled studies, is best able to provide general insights into mechanisms and to inform the management of species-poor and highly managed systems such as croplands, plantations, and the restoration of heavily degraded ecosystems. Research from the second cluster, small-grain observational studies, and species removal and addition studies, may allow for direct predictions of the impacts of species loss in specific semi-natural ecosystems. Research in the third cluster, large-grain uncontrolled studies, may best inform landscape-scale management and national-scale policy. We discuss barriers to transfer within each cluster and suggest how new research and knowledge exchange mechanisms may overcome these challenges. To meet the potential for BEF research to address global challenges, we recommend transdisciplinary research that goes beyond these current clusters and considers the social-ecological context of the ecosystems in which BEF knowledge is generated. This requires recognizing the social and economic value of biodiversity for ecosystem services at scales, and in units, that matter to land managers and policy makers."],["dc.identifier.doi","10.1016/bs.aecr.2019.06.009"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61868"],["dc.language.iso","en"],["dc.relation.issn","0065-2504"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.title","Transferring biodiversity-ecosystem function research to the management of ‘real-world’ ecosystems"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","553"],["dc.bibliographiccitation.issue","7323"],["dc.bibliographiccitation.journal","Nature"],["dc.bibliographiccitation.lastpage","556"],["dc.bibliographiccitation.volume","468"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Eisenhauer, Nico"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Schmid, Bernhard"],["dc.contributor.author","Voigt, Winfried"],["dc.contributor.author","Fischer, Markus"],["dc.contributor.author","Schulze, Ernst-Detlef"],["dc.contributor.author","Roscher, Christiane"],["dc.contributor.author","Weigelt, Alexandra"],["dc.contributor.author","Allan, Eric"],["dc.contributor.author","Beßler, Holger"],["dc.contributor.author","Bonkowski, Michael"],["dc.contributor.author","Buchmann, Nina"],["dc.contributor.author","Buscot, François"],["dc.contributor.author","Clement, Lars W."],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Engels, Christof"],["dc.contributor.author","Halle, Stefan"],["dc.contributor.author","Kertscher, Ilona"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Koller, Robert"],["dc.contributor.author","König, Stephan"],["dc.contributor.author","Kowalski, Esther"],["dc.contributor.author","Kummer, Volker"],["dc.contributor.author","Kuu, Annely"],["dc.contributor.author","Lange, Markus"],["dc.contributor.author","Lauterbach, Dirk"],["dc.contributor.author","Middelhoff, Cornelius"],["dc.contributor.author","Migunova, Varvara D."],["dc.contributor.author","Milcu, Alexandru"],["dc.contributor.author","Müller, Ramona"],["dc.contributor.author","Partsch, Stephan"],["dc.contributor.author","Petermann, Jana S."],["dc.contributor.author","Renker, Carsten"],["dc.contributor.author","Rottstock, Tanja"],["dc.contributor.author","Sabais, Alexander"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Schumacher, Jens"],["dc.contributor.author","Temperton, Vicky"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:54:47Z"],["dc.date.available","2017-09-07T11:54:47Z"],["dc.date.issued","2010"],["dc.identifier.doi","10.1038/nature09492"],["dc.identifier.gro","3150106"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6837"],["dc.notes.status","public"],["dc.notes.submitter","chake"],["dc.publisher","Springer Nature"],["dc.relation.issn","0028-0836"],["dc.title","Bottom-up effects of plant diversity on multitrophic interactions in a biodiversity experiment"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","42"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Biological Conservation"],["dc.bibliographiccitation.lastpage","52"],["dc.bibliographiccitation.volume","150"],["dc.contributor.author","Hudewenz, Anika"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Stanke, Lea"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Vogel, Anja"],["dc.contributor.author","Weigelt, Alexandra"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Ebeling, Anne"],["dc.date.accessioned","2017-09-07T11:53:53Z"],["dc.date.available","2017-09-07T11:53:53Z"],["dc.date.issued","2012"],["dc.description.abstract","Agricultural intensification is a major driver of global environmental change. Disentangling the relative impact of losses in plant species richness and intensified management on higher trophic level organisms is important for conservation recommendations.We established different management regimes along an experimental gradient of plant species richness within “The Jena-Experiment” in Germany and quantified herbivory as well as grasshoppers and pollinators. Herbivory, grasshopper density and species richness and frequency of flower visiting pollinators were recorded two times in each of four subplots of altogether 80 plots differing in plant species richness. Each of the four subplots was subject to four different levels of fertilizer application and mowing to simulate very low, low, high and very high land use intensity.Fertilization and mowing significantly affected plant–herbivore interactions but plant species richness had no discernible effect. Grasshoppers were most abundant at high intensity subplots (3.1 individuals per m2) and least abundant on very low intensity subplots (1.3 individuals per m2). Leaf damage caused by herbivores was highest in even the very high intensity subplots (3.7%) with four mowing events per year and high amounts of fertilizer application and lowest on subplots with a low management intensity (2.4%) comprising two mowing events per year but no fertilizer application. In contrast, pollinators benefited most from lower management intensities, with only one or two mowing events and no fertilizer addition. In addition, higher numbers of flowering plant species and increased blossom cover was associated with enhanced pollinator species richness and flower visitation.Our results indicate that even in grasslands with high plant species richness, mowing and fertilization are more important drivers of herbivory and flower visitation by pollinators. Management with no more than two cuts per year and without fertilizer application in our grasslands balanced the ecosystem functions of increased pollination and decreased herbivory."],["dc.identifier.doi","10.1016/j.biocon.2012.02.024"],["dc.identifier.gro","3150010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6730"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","0006-3207"],["dc.title","Herbivore and pollinator responses to grassland management intensity along experimental changes in plant species richness"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","44"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nature Ecology & Evolution"],["dc.bibliographiccitation.lastpage","49"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Meyer, Sebastian T."],["dc.contributor.author","Ptacnik, Robert"],["dc.contributor.author","Hillebrand, Helmut"],["dc.contributor.author","Beßler, Holger"],["dc.contributor.author","Buchmann, Nina"],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Eisenhauer, Nico"],["dc.contributor.author","Engels, Christof"],["dc.contributor.author","Fischer, Markus"],["dc.contributor.author","Halle, Stefan"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Oelmann, Yvonne"],["dc.contributor.author","Roscher, Christiane"],["dc.contributor.author","Rottstock, Tanja"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Schmid, Bernhard"],["dc.contributor.author","Schulze, Ernst-Detlef"],["dc.contributor.author","Temperton, Vicky M."],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Voigt, Winfried"],["dc.contributor.author","Weigelt, Alexandra"],["dc.contributor.author","Wilcke, Wolfgang"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.date.accessioned","2019-07-23T08:27:54Z"],["dc.date.available","2019-07-23T08:27:54Z"],["dc.date.issued","2018-01"],["dc.description.abstract","Biodiversity ensures ecosystem functioning and provisioning of ecosystem services, but it remains unclear how biodiversity-ecosystem multifunctionality relationships depend on the identity and number of functions considered. Here, we demonstrate that ecosystem multifunctionality, based on 82 indicator variables of ecosystem functions in a grassland biodiversity experiment, increases strongly with increasing biodiversity. Analysing subsets of functions showed that the effects of biodiversity on multifunctionality were stronger when more functions were included and that the strength of the biodiversity effects depended on the identity of the functions included. Limits to multifunctionality arose from negative correlations among functions and functions that were not correlated with biodiversity. Our findings underline that the management of ecosystems for the protection of biodiversity cannot be replaced by managing for particular ecosystem functions or services and emphasize the need for specific management to protect biodiversity. More plant species from the experimental pool of 60 species contributed to functioning when more functions were considered. An individual contribution to multifunctionality could be demonstrated for only a fraction of the species."],["dc.identifier.doi","10.1038/s41559-017-0391-4"],["dc.identifier.pmid","29180710"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61889"],["dc.language.iso","en"],["dc.relation.eissn","2397-334X"],["dc.relation.issn","2397-334X"],["dc.title","Biodiversity-multifunctionality relationships depend on identity and number of measured functions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1808"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Oikos"],["dc.bibliographiccitation.lastpage","1815"],["dc.bibliographiccitation.volume","117"],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Schumacher, Jens"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:53:48Z"],["dc.date.available","2017-09-07T11:53:48Z"],["dc.date.issued","2008"],["dc.description.abstract","Pollinators play a key role in the reproduction of most plant species, and pollinator and plant diversity are often related. We studied an experimental gradient of plant species richness for a better understanding of plant–pollinator community interactions and their temporal variability, because in non-experimental field surveys plant richness is often confounded with gradients in management, soil fertility, and community composition. We observed pollinator species richness and frequency of visits six times in 73 plots over two years, and used advanced statistical analysis to account for the high number of zeroes that often occur in count data of rare species. The frequency of pollinator visits increased linearly with both the blossom cover and the number of flowering plant species, which was closely related to the total number of plant species, whereas the number of pollinator species followed a saturation curve. The presence of particularly attractive plant species was only important for the frequency of flower visits, but not to the richness of pollinators. Plant species richness, blossom cover, and the presence of attractive plant species enhanced the temporal stability in the frequency of pollinator visits.In conclusion, grasslands with high plant diversity enhance and stabilize frequent and diverse flower visitations, which should sustain effective pollination and plant reproduction."],["dc.identifier.doi","10.1111/j.1600-0706.2008.16819.x"],["dc.identifier.gro","3149987"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6705"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0030-1299"],["dc.title","How does plant richness affect pollinator richness and temporal stability of flower visits?"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","297"],["dc.bibliographiccitation.journal","Advances in Ecological Research"],["dc.bibliographiccitation.lastpage","322"],["dc.bibliographiccitation.volume","61"],["dc.contributor.author","Hines, Jes"],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Barnes, Andrew D."],["dc.contributor.author","Brose, Ulrich"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Scheu, Stefan"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Giling, Darren P."],["dc.contributor.author","Klein, Alexandra M."],["dc.contributor.author","Eisenhauer, Nico"],["dc.date.accessioned","2019-07-23T07:31:59Z"],["dc.date.available","2019-07-23T07:31:59Z"],["dc.date.issued","2019"],["dc.description.abstract","Human activities are causing major changes in biological communities worldwide. Due to concern about the consequences of these changes, an academic conversation about biodiversity and ecosystem functioning (BEF) has emerged over the last few decades. Here we use a keyword co-occurrence analysis to characterize and review 28 years of research focused on these terms. We find that the rapidly growing literature has developed in four research domains. The first two domains “BEF Experiments” and “Science Policy” emerge early, and persist through time, as core research areas with emphases on experiments and management, respectively. The second two domains, “Agricultural Landscapes” and “Aquatic Food Webs”, arise as integrative domains that connect divisions in scientific discussion surrounding BEF Experiments and Science Policy. Terms related to species interactions (i.e. pollinator, predator, food web) appear more commonly in the two integrative domains reflecting shared interests of many scientists focusing on biodiversity and ecosystem functioning. Despite shared interests in food webs, research in the four domains differ with respect to their spatial scale, baseline comparisons, and currency of measurements. Food-web research that bridges these divides should be pushed to the forefront of biodiversity and ecosystem functioning research priorities."],["dc.identifier.doi","10.1016/bs.aecr.2019.06.008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61867"],["dc.language.iso","en"],["dc.relation.issn","0065-2504"],["dc.title","Mapping change in biodiversity and ecosystem function research: Food webs foster integration of experiments and science policy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","453"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","465"],["dc.bibliographiccitation.volume","169"],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:50:46Z"],["dc.date.available","2017-09-07T11:50:46Z"],["dc.date.issued","2011"],["dc.description.abstract","Plant diversity changes can impact the abundance, diversity, and functioning of species at higher trophic levels. We used an experimental gradient in grassland plant diversity ranging from 1 to 16 plant species to study multitrophic interactions among plants, cavity-nesting bees and wasps, and their natural enemies, and analysed brood cell density, insect diversity (species richness), and bee and wasp community similarity over two consecutive years. The bee and wasp communities were more similar among the high (16 species) diversity plots than among plots of the lower diversity levels (up to 8 species), and a more similar community of bees and wasps resulted in a more similar community of their parasitoids. Plant diversity, which was closely related to flower diversity, positively and indirectly affected bee diversity and the diversity of their parasitoids via increasing brood cell density of bees. Increasing plant diversity directly led to higher wasp diversity. Parasitism rates of bees and wasps (hosts) were not affected by plant diversity, but increased with the diversity of their respective parasitoids. Decreases in parasitism rates of bees arose from increasing brood cell density of bees (hosts), whereas decreasing parasitism rates of wasps arose from increasing wasp diversity (hosts). In conclusion, decreases in plant diversity propagated through different trophic levels: from plants to insect hosts to their parasitoids, decreasing density and diversity. The positive relationship between plant diversity and the community similarity of higher trophic levels indicates a community-stabilising effect of high plant diversity."],["dc.identifier.doi","10.1007/s00442-011-2205-8"],["dc.identifier.gro","3149909"],["dc.identifier.pmid","22120706"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6619"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","0029-8549"],["dc.subject","Community similarity; Hymenoptera; Jena Experiment; Structural equation model; Wild bees"],["dc.title","Multitrophic effects of experimental changes in plant diversity on cavity-nesting bees, wasps, and their parasitoids"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","300"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Basic and Applied Ecology"],["dc.bibliographiccitation.lastpage","309"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:50:47Z"],["dc.date.available","2017-09-07T11:50:47Z"],["dc.date.issued","2011"],["dc.description.abstract","Although most plants benefit from pollen vectors, very little information exists about how plant diversity structures the interactions between plants and their flower visitors. The structure of such interaction webs holds information about specialization and effectiveness of flower visitors in flower resource use. Here, we analyzed 52 plant–flower visitor interaction webs along a gradient of experimentally manipulated plant species richness in a European grassland. The gradient allows testing for effects of the number of flowering plant species per se. Linkage density and interaction diversity between flowering plant species and their visiting insect species increased with higher richness of flowering species. Increased interaction diversity led to smaller temporal variability in the frequency of flower visits. These results suggest higher temporal stability of pollination provided for plants integrated in complex interaction webs with a high number of flowering plant species.Flower resource specialization of solitary bees, but not of honey and bumble bees, increased with increasing flowering plant species richness. Conservation of diverse grasslands can result in high flower specialization and may promote effectiveness of pollination services. Die meisten Pflanzen werden durch Pollenüberträger begünstigt, jedoch ist wenig bekannt über die Auswirkungen von Pflanzendiversität auf die Interaktionen zwischen Pflanzen und ihren Blütenbesuchern. Die Struktur dieser Interaktionsnetze liefert wichtige Informationen über Spezialisierung und Effektivität der Blütenbesucher in ihrer Resourcennutzung. Wir untersuchten 52 Pflanze–Blütenbesucher-Interaktionsnetze eines europäischen Graslandes entlang eines experimentellen Gradienten in der Anzahl von Pflanzenarten. Der experimentelle Gradient bietet uns die Möglichkeit den Einfluss der Anzahl der blühenden Pflanzenarten per se zu untersuchen. Linkdichte (linkage density) und Interaktionsdiversität (interaction diversity) zwischen den blühenden Pflanzenarten und ihren Blütenbesuchern nahmen mit der Anzahl der blühenden Pflanzenarten zu. Ein Anstieg in der Interaktionsdiversität führte wiederum zu einer Abnahme in der zeitlichen Variabilität. Die Ergebnisse lassen auf höhere zeitliche Stabilität in der Bestäubung von Pflanzen schließen, die von einer hohen Anzahl an blühenden Pflanzenarten umgeben sind und somit in ein komplexes Interaktionsnetz integriert sind. Die Spezialisierung auf Blütenresourcen nahm bei den solitären Bienen mit zunehmender Anzahl an blühenden Pflanzenarten zu, nicht jedoch bei Honigbienen und Hummeln. Der Schutz von diversen Graslandflächen führt demnach zu höherer Resourcenspezialiserung, und kann somit eventuell eine Zunahme in der Bestäubungsleistung fördern."],["dc.identifier.doi","10.1016/j.baae.2011.04.005"],["dc.identifier.gro","3149907"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6617"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","1439-1791"],["dc.subject","Biodiversity experiment; Bumble bees; Grassland; Solitary bees; Honey bees; Temporal stability"],["dc.title","Plant–flower visitor interaction webs: Temporal stability and pollinator specialization increases along an experimental plant diversity gradient"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2249"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Ecology and Evolution"],["dc.bibliographiccitation.lastpage","2261"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Venjakob, Christine"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Ebeling, Anne"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Scherber, Christoph"],["dc.date.accessioned","2017-09-07T11:53:50Z"],["dc.date.available","2017-09-07T11:53:50Z"],["dc.date.issued","2016"],["dc.description.abstract","Ongoing biodiversity decline impairs ecosystem processes, including pollination. Flower visitation, an important indicator of pollination services, is influenced by plant species richness. However, the spatio-temporal responses of different pollinator groups to plant species richness have not yet been analyzed experimentally. Here, we used an experimental plant species richness gradient to analyze plant-pollinator interactions with an unprecedented spatio-temporal resolution. We observed four pollinator functional groups (honeybees, bumblebees, solitary bees, and hoverflies) in experimental plots at three different vegetation strata between sunrise and sunset. Visits were modified by plant species richness interacting with time and space. Furthermore, the complementarity of pollinator functional groups in space and time was stronger in species-rich mixtures. We conclude that high plant diversity should ensure stable pollination services, mediated via spatio-temporal niche complementarity in flower visitation."],["dc.identifier.doi","10.1002/ece3.2026"],["dc.identifier.gro","3149998"],["dc.identifier.pmid","27069585"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13315"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6717"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","2045-7758"],["dc.rights.access","openAccess"],["dc.subject","Environmental niche; Jena Experiment; floral resource use; functional pollinator diversity; generalized additive models; niche overlap"],["dc.title","Plant diversity increases spatio-temporal niche complementarity in plant-pollinator interactions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]