Hänke, Sebastian

[["dc.bibliographiccitation.firstpage","1938"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Ecological Applications"],["dc.bibliographiccitation.lastpage","1946"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Kovács-Hostyánszki, Anikó"],["dc.contributor.author","Haenke, Sebastian"],["dc.contributor.author","Batáry, Péter"],["dc.contributor.author","Jauker, Birgit"],["dc.contributor.author","Báldi, András"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Holzschuh, Andrea"],["dc.date.accessioned","2017-09-07T11:53:55Z"],["dc.date.available","2017-09-07T11:53:55Z"],["dc.date.issued","2013"],["dc.identifier.doi","10.1890/12-2012.1"],["dc.identifier.gro","3150014"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6735"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","1051-0761"],["dc.title","Contrasting effects of mass-flowering crops on bee pollination of hedge plants at different spatial and temporal scales"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2187"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Ecological Applications"],["dc.bibliographiccitation.lastpage","2196"],["dc.bibliographiccitation.volume","21"],["dc.contributor.author","Thies, Carsten"],["dc.contributor.author","Hänke, Sebastian"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Bengtsson, Janne"],["dc.contributor.author","Bommarco, Riccardo"],["dc.contributor.author","Clement, Lars W."],["dc.contributor.author","Ceryngier, Piotr"],["dc.contributor.author","Dennis, Christopher"],["dc.contributor.author","Emmerson, Mark"],["dc.contributor.author","Gagic, Vesna"],["dc.contributor.author","Hawro, Violetta"],["dc.contributor.author","Liira, Jaan"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Winqvist, Camilla"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:54:42Z"],["dc.date.available","2017-09-07T11:54:42Z"],["dc.date.issued","2011"],["dc.description.abstract","Agricultural intensification can affect biodiversity and related ecosystem services such as biological control, but large-scale experimental evidence is missing. We examined aphid pest populations in cereal fields under experimentally reduced densities of (1) ground-dwelling predators (−G), (2) vegetation-dwelling predators and parasitoids (−V), (3) a combination of (1) and (2) (−G−V), compared with open-fields (control), in contrasting landscapes with low vs. high levels of agricultural intensification (AI), and in five European regions. Aphid populations were 28%, 97%, and 199% higher in −G, −V, and −G−V treatments, respectively, compared to the open fields, indicating synergistic effects of both natural-enemy groups. Enhanced parasitoid : host and predator : prey ratios were related to reduced aphid population density and population growth. The relative importance of parasitoids and vegetation-dwelling predators greatly differed among European regions, and agricultural intensification affected biological control and aphid density only in some regions. This shows a changing role of species group identity in diverse enemy communities and a need to consider region-specific landscape management."],["dc.identifier.doi","10.1890/10-0929.1"],["dc.identifier.gro","3150081"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6810"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","1051-0761"],["dc.subject","agricultural intensification; cereal aphid; ecosystem service; European agricultural landscapes; functional group identity and diversity; landscape complexity; parasitoid; predator"],["dc.title","The relationship between agricultural intensification and biological control: experimental tests across Europe"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","505"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Applied Ecology"],["dc.bibliographiccitation.lastpage","513"],["dc.bibliographiccitation.volume","51"],["dc.contributor.author","Haenke, Sebastian"],["dc.contributor.author","Kovács-Hostyánszki, Anikó"],["dc.contributor.author","Fründ, Jochen"],["dc.contributor.author","Batáry, Péter"],["dc.contributor.author","Jauker, Birgit"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Holzschuh, Andrea"],["dc.contributor.editor","Osborne, Juliet"],["dc.date.accessioned","2017-09-07T11:50:42Z"],["dc.date.available","2017-09-07T11:50:42Z"],["dc.date.issued","2014"],["dc.description.abstract","Human-dominated landscapes are characterized by a mosaic of natural and managed ecosystems, affecting arthropod communities on different spatial scales. Effective landscape management for functionally important organisms suffers from little understanding of organism spillover between semi-natural habitats and adjacent crops, and of how it is affected by the surrounding landscape. We examined syrphid abundance (Diptera: Syrphidae) in three types of linear semi-natural habitats, differing in connectedness to annual crops and forest [forest edges (n = 12), forest-connected hedges (n = 11) and isolated hedges (n = 12)], as well as in the adjacent oilseed rape or winter wheat fields (i.e. altogether n = 70 sites in 35 landscapes). The landscape circles with 1 km radius around the study sites differed in the proportion of oilseed rape (ranging from 0% to 35% oilseed rape) enabling us to test landscape-scale effects of oilseed rape. Aphidophagous syrphids were more abundant in forest-connected hedgerows than in forest edges (with isolated hedges being intermediate), and more abundant in crop fields adjacent to hedgerows than adjacent to forest edges, indicating spillover from semi-natural habitats to the adjacent crop fields. Aphidophagous syrphid abundance was higher in semi-natural habitats adjacent to oilseed rape fields than adjacent to wheat fields if the proportion of oilseed rape in the landscape was low (indicating local concentration). Synthesis and applications. This study highlights the potential of hedgerows to enhance the abundances of beneficial syrphids and their spillover to adjacent crop fields, especially when they are connected with forests. We provide evidence that this local exchange is moderated by the extent of mass-flowering crops in the surrounding landscapes due to local concentration. Therefore, measurements for the improvement in local biological functioning should be evaluated by simultaneously investigating local and regional aspects of crop configurations to allow for region-specific management recommendations. Increasing the total amount of hedgerows in the agricultural matrix under moderate landscape-scale proportions of mass-flowering crops may serve best for the conservation of biodiversity and augmentation of important ecosystem services such as biological control and pollination in landscapes dominated by agricultural cultivations."],["dc.identifier.doi","10.1111/1365-2664.12221"],["dc.identifier.gro","3149873"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6580"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","0021-8901"],["dc.title","Landscape configuration of crops and hedgerows drives local syrphid fly abundance"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1099"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Oecologia"],["dc.bibliographiccitation.lastpage","1109"],["dc.bibliographiccitation.volume","170"],["dc.contributor.author","Gagic, Vesna"],["dc.contributor.author","Hänke, Sebastian"],["dc.contributor.author","Thies, Carsten"],["dc.contributor.author","Scherber, Christoph"],["dc.contributor.author","Tomanović, Željko"],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:53:55Z"],["dc.date.available","2017-09-07T11:53:55Z"],["dc.date.issued","2012"],["dc.identifier.doi","10.1007/s00442-012-2366-0"],["dc.identifier.gro","3150019"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6740"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","0029-8549"],["dc.title","Agricultural intensification and cereal aphid–parasitoid–hyperparasitoid food webs: network complexity, temporal variability and parasitism rates"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","386"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Basic and Applied Ecology"],["dc.bibliographiccitation.lastpage","387"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Geiger, Flavia"],["dc.contributor.author","Bengtsson, Jan"],["dc.contributor.author","Berendse, Frank"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Emmerson, Mark C."],["dc.contributor.author","Morales, Manuel B."],["dc.contributor.author","Ceryngier, Piotr"],["dc.contributor.author","Liira, Jaan"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Winqvist, Camilla"],["dc.contributor.author","Eggers, Sonke"],["dc.contributor.author","Bommarco, Riccardo"],["dc.contributor.author","Part, Tomas"],["dc.contributor.author","Bretagnolle, Vincent"],["dc.contributor.author","Plantegenest, Manuel"],["dc.contributor.author","Clement, Lars W."],["dc.contributor.author","Dennis, Christopher"],["dc.contributor.author","Palmer, Catherine"],["dc.contributor.author","Onate, Juan J."],["dc.contributor.author","Guerrero, Irene"],["dc.contributor.author","Hawro, Violetta"],["dc.contributor.author","Aavik, Tsipe"],["dc.contributor.author","Thies, Carsten"],["dc.contributor.author","Flohre, Andreas"],["dc.contributor.author","Haenke, Sebastian"],["dc.contributor.author","Fischer, Christina"],["dc.contributor.author","Goedhart, Paul W."],["dc.contributor.author","Inchausti, Pablo"],["dc.date.accessioned","2018-11-07T09:00:22Z"],["dc.date.available","2018-11-07T09:00:22Z"],["dc.date.issued","2011"],["dc.identifier.doi","10.1016/j.baae.2011.03.004"],["dc.identifier.isi","000293312600012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/24139"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Gmbh, Urban & Fischer Verlag"],["dc.relation.issn","1439-1791"],["dc.title","Persistent negative effects of pesticides on biodiversity and biological control potential on European farmland (vol 11, pg 97, 2010)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1106"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of Applied Ecology"],["dc.bibliographiccitation.lastpage","1114"],["dc.bibliographiccitation.volume","46"],["dc.contributor.author","Haenke, Sebastian"],["dc.contributor.author","Scheid, Barbara"],["dc.contributor.author","Schaefer, Matthias"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Thies, Carsten"],["dc.date.accessioned","2017-09-07T11:54:37Z"],["dc.date.available","2017-09-07T11:54:37Z"],["dc.date.issued","2009"],["dc.description.abstract","1. The structural complexity of agricultural landscapes influences the local biodiversity and associatedecosystem services. Hence, developing effective biodiversity management requires a betterunderstanding of the relative importance of local and landscape changes, especially for functionallyimportant organisms such as hoverflies benefiting from flowering plants.2. We examined hoverfly (Diptera: Syrphidae) communities in broad and narrow sown flowerstrips, in naturally developed grassy strips and in wheat fields (as a control). We also investigatedthe effects of these four habitat types on syrphid occurrence in the adjacent wheat fields.3. The relative influence of local vs. landscape effects was tested by selecting study sites along agradient of structural complexity from simple landscapes (100% arable land) to complex landscapes(up to 70% semi-natural habitats such as fallows, field margins, hedges and grassland).Landscape complexity was assessed within landscape sectors of 0Æ5–4Æ0 km radius around strips.4. Syrphid density and in particular, the density of aphidophagous species, was higher in narrow andbroad sown flower strips compared to grassy strips and wheat–wheat boundary controls at the milkripeningstage of the wheat. In addition, species richness of aphidophagous syrphids within wheatfields adjacent to broad sown flower strips was higher at the wheat peak-ripening stage. This indicatesa spillover between habitats and a positive effect of these sown flower strips on potential biocontrol ofcereal aphids. Flower densities and syrphid diversity and density, respectively, were closely related.5. Species richness and abundance in the sown flower strips increased as the proportion of arableland in the surrounding landscape increased, suggesting that within structurally simple landscapes(at 0Æ5–1 km radius around the sites) syrphid flies concentrated on the most rewarding resourceswithin the sown flower strips. Sown flower strips were more effective at increasing syrphid speciesrichness and abundance in simple landscapes, presumably because the creation of flower resourcesmade the greatest difference in such homogeneous, intensively managed arable landscapes.6. Synthesis and applications. Agri-environment schemes should take the surrounding landscapecharacteristics into account when considering using sown flower strips to enhance syrphid densityand diversity, and their biocontrol function, in arable landscapes. Creating locally such flower stripsis more effective in simple landscapes containing a high proportion of arable land, while in complexlandscapes, keeping the overall diversity is important."],["dc.identifier.doi","10.1111/j.1365-2664.2009.01685.x"],["dc.identifier.gro","3150062"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6789"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","0021-8901"],["dc.subject","agricultural intensification; biocontrol; concentration effects; flower strips; landscape complexity; semi-natural habitats; syrphid"],["dc.title","Increasing syrphid fly diversity and density in sown flower strips within simple vs. complex landscapes"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","97"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Basic and Applied Ecology"],["dc.bibliographiccitation.lastpage","105"],["dc.bibliographiccitation.volume","11"],["dc.contributor.author","Geiger, Flavia"],["dc.contributor.author","Bengtsson, Jan"],["dc.contributor.author","Berendse, Frank"],["dc.contributor.author","Weisser, Wolfgang W."],["dc.contributor.author","Emmerson, Mark C."],["dc.contributor.author","Morales, Manuel B."],["dc.contributor.author","Ceryngier, Piotr"],["dc.contributor.author","Liira, Jaan"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Winqvist, Camilla"],["dc.contributor.author","Eggers, Sonke"],["dc.contributor.author","Bommarco, Riccardo"],["dc.contributor.author","Part, Tomas"],["dc.contributor.author","Bretagnolle, Vincent"],["dc.contributor.author","Plantegenest, Manuel"],["dc.contributor.author","Clement, Lars W."],["dc.contributor.author","Dennis, Christopher"],["dc.contributor.author","Palmer, Catherine"],["dc.contributor.author","Onate, Juan J."],["dc.contributor.author","Guerrero, Irene"],["dc.contributor.author","Hawro, Violetta"],["dc.contributor.author","Aavik, Tsipe"],["dc.contributor.author","Thies, Carsten"],["dc.contributor.author","Flohre, Andreas"],["dc.contributor.author","Hanke, Sebastian"],["dc.contributor.author","Fischer, Christina"],["dc.contributor.author","Goedhart, Paul W."],["dc.contributor.author","Inchausti, Pablo"],["dc.date.accessioned","2018-11-07T08:47:06Z"],["dc.date.available","2018-11-07T08:47:06Z"],["dc.date.issued","2010"],["dc.description.abstract","During the last 50 years, agricultural intensification has caused many wild plant and animal species to go extinct regionally or nationally and has profoundly changed the functioning of agro-ecosystems. Agricultural intensification has many components, such as loss of landscape elements, enlarged farm and field sizes and larger inputs of fertilizer and pesticides. However, very little is known about the relative contribution of these variables to the large-scale negative effects on biodiversity. In this study, we disentangled the impacts of various components of agricultural intensification on species diversity of wild plants, carabids and ground-nesting farmland birds and on the biological control of aphids. In a Europe-wide study in eight West and East European countries, we found important negative effects of agricultural intensification on wild plant, carabid and bird species diversity and on the potential for biological pest control, as estimated from the number of aphids taken by predators. Of the 13 components of intensification we measured, use of insecticides and fungicides had consistent negative effects on biodiversity. Insecticides also reduced the biological control potential. Organic farming and other agri-environment schemes aiming to mitigate the negative effects of intensive farming on biodiversity did increase the diversity of wild plant and carabid species, but - contrary to our expectations - not the diversity of breeding birds. We conclude that despite decades of European policy to ban harmful pesticides, the negative effects of pesticides on wild plant and animal species persist, at the same time reducing the opportunities for biological pest control. If biodiversity is to be restored in Europe and opportunities are to be created for crop production utilizing biodiversity-based ecosystem services such as biological pest control, there must be a Europe-wide shift towards farming with minimal use of pesticides over large areas. (C) 2009 Gesellschaft fur Okologie. Published by Elsevier Gmbh. All rights reserved."],["dc.identifier.doi","10.1016/j.baae.2009.12.001"],["dc.identifier.isi","000276757400001"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/20861"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Gmbh, Urban & Fischer Verlag"],["dc.relation.issn","1439-1791"],["dc.title","Persistent negative effects of pesticides on biodiversity and biological control potential on European farmland"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","103"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Insect Conservation and Diversity"],["dc.bibliographiccitation.lastpage","112"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Gagic, Vesna"],["dc.contributor.author","Hänke, Sebastian"],["dc.contributor.author","Thies, Carsten"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.editor","Leather, Simon R."],["dc.contributor.editor","Bezemer, Martijn"],["dc.date.accessioned","2017-09-07T11:50:48Z"],["dc.date.available","2017-09-07T11:50:48Z"],["dc.date.issued","2013"],["dc.identifier.doi","10.1111/icad.12037"],["dc.identifier.gro","3149912"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6623"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","1752-458X"],["dc.title","Community variability in aphid parasitoids versus predators in response to agricultural intensification"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]