Kormann, Iris

[["dc.bibliographiccitation.firstpage","1608"],["dc.bibliographiccitation.issue","6127"],["dc.bibliographiccitation.journal","Science"],["dc.bibliographiccitation.lastpage","1611"],["dc.bibliographiccitation.volume","339"],["dc.contributor.author","Garibaldi, L. A."],["dc.contributor.author","Steffan-Dewenter, I."],["dc.contributor.author","Winfree, R."],["dc.contributor.author","Aizen, M. A."],["dc.contributor.author","Bommarco, R."],["dc.contributor.author","Cunningham, S. A."],["dc.contributor.author","Kremen, C."],["dc.contributor.author","Carvalheiro, L. G."],["dc.contributor.author","Harder, L. D."],["dc.contributor.author","Afik, O."],["dc.contributor.author","Bartomeus, I."],["dc.contributor.author","Benjamin, F."],["dc.contributor.author","Boreux, V."],["dc.contributor.author","Cariveau, D."],["dc.contributor.author","Chacoff, N. P."],["dc.contributor.author","Dudenhöffer, Jan-H."],["dc.contributor.author","Freitas, B. M."],["dc.contributor.author","Ghazoul, J."],["dc.contributor.author","Greenleaf, S."],["dc.contributor.author","Hipolito, J."],["dc.contributor.author","Holzschuh, A."],["dc.contributor.author","Howlett, B."],["dc.contributor.author","Isaacs, R."],["dc.contributor.author","Javorek, S. K."],["dc.contributor.author","Kennedy, C. M."],["dc.contributor.author","Krewenka, K. M."],["dc.contributor.author","Krishnan, S."],["dc.contributor.author","Mandelik, Y."],["dc.contributor.author","Mayfield, M. M."],["dc.contributor.author","Motzke, I."],["dc.contributor.author","Munyuli, T."],["dc.contributor.author","Nault, B. A."],["dc.contributor.author","Otieno, M."],["dc.contributor.author","Petersen, J."],["dc.contributor.author","Pisanty, G."],["dc.contributor.author","Potts, S. G."],["dc.contributor.author","Rader, R."],["dc.contributor.author","Ricketts, T. H."],["dc.contributor.author","Rundlof, M."],["dc.contributor.author","Seymour, C. L."],["dc.contributor.author","Schuepp, C."],["dc.contributor.author","Szentgyorgyi, H."],["dc.contributor.author","Taki, H."],["dc.contributor.author","Tscharntke, T."],["dc.contributor.author","Vergara, C. H."],["dc.contributor.author","Viana, B. F."],["dc.contributor.author","Wanger, T. C."],["dc.contributor.author","Westphal, C."],["dc.contributor.author","Williams, N."],["dc.contributor.author","Klein, A. M."],["dc.date.accessioned","2017-09-07T11:54:48Z"],["dc.date.available","2017-09-07T11:54:48Z"],["dc.date.issued","2013"],["dc.description.abstract","The diversity and abundance of wild insect pollinators have declined in many agricultural landscapes. Whether such declines reduce crop yields, or are mitigated by managed pollinators such as honey bees, is unclear. We found universally positive associations of fruit set with flower visitation by wild insects in 41 crop systems worldwide. In contrast, fruit set increased significantly with flower visitation by honey bees in only 14% of the systems surveyed. Overall, wild insects pollinated crops more effectively; an increase in wild insect visitation enhanced fruit set by twice as much as an equivalent increase in honey bee visitation. Visitation by wild insects and honey bees promoted fruit set independently, so pollination by managed honey bees supplemented, rather than substituted for, pollination by wild insects. Our results suggest that new practices for integrated management of both honey bees and diverse wild insect assemblages will enhance global crop yields."],["dc.identifier.doi","10.1126/science.1230200"],["dc.identifier.gro","3150108"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6838"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","chake"],["dc.relation.issn","0036-8075"],["dc.title","Wild Pollinators Enhance Fruit Set of Crops Regardless of Honey Bee Abundance"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1436"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Journal of Applied Ecology"],["dc.bibliographiccitation.lastpage","1444"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Garibaldi, L. A."],["dc.contributor.author","Bartomeus, I."],["dc.contributor.author","Bommarco, R."],["dc.contributor.author","Klein, A. M."],["dc.contributor.author","Cunningham, S. A."],["dc.contributor.author","Aizen, M. A."],["dc.contributor.author","Boreux, V."],["dc.contributor.author","Garratt, M. P. D."],["dc.contributor.author","Carvalheiro, L. G."],["dc.contributor.author","Kremen, C."],["dc.contributor.author","Morales, C. L."],["dc.contributor.author","Schüepp, C."],["dc.contributor.author","Chacoff, N. P."],["dc.contributor.author","Freitas, B. M."],["dc.contributor.author","Gagic, V."],["dc.contributor.author","Holzschuh, A."],["dc.contributor.author","Klatt, B. K."],["dc.contributor.author","Krewenka, K. M."],["dc.contributor.author","Krishnan, S."],["dc.contributor.author","Mayfield, M. M."],["dc.contributor.author","Motzke, I."],["dc.contributor.author","Otieno, M."],["dc.contributor.author","Petersen, J."],["dc.contributor.author","Potts, S. G."],["dc.contributor.author","Ricketts, T. H."],["dc.contributor.author","Rundlöf, M."],["dc.contributor.author","Sciligo, A."],["dc.contributor.author","Sinu, P. A."],["dc.contributor.author","Steffan-Dewenter, I."],["dc.contributor.author","Taki, H."],["dc.contributor.author","Tscharntke, T."],["dc.contributor.author","Vergara, C. H."],["dc.contributor.author","Viana, B. F."],["dc.contributor.author","Woyciechowski, M."],["dc.date.accessioned","2017-09-07T11:53:47Z"],["dc.date.available","2017-09-07T11:53:47Z"],["dc.date.issued","2015"],["dc.identifier.doi","10.1111/1365-2664.12530"],["dc.identifier.gro","3149975"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6692"],["dc.notes.status","public"],["dc.notes.submitter","chake"],["dc.relation.issn","0021-8901"],["dc.title","EDITOR'S CHOICE: REVIEW: Trait matching of flower visitors and crops predicts fruit set better than trait diversity"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","245"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Agricultural and Forest Entomology"],["dc.bibliographiccitation.lastpage","254"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Motzke, Iris"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Sodhi, Navjot S."],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Wanger, Thomas C."],["dc.date.accessioned","2017-09-07T11:50:54Z"],["dc.date.available","2017-09-07T11:50:54Z"],["dc.date.issued","2013"],["dc.identifier.doi","10.1111/afe.12011"],["dc.identifier.gro","3149940"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6652"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.relation.issn","1461-9555"],["dc.title","Ant seed predation, pesticide applications and farmers' income from tropical multi-cropping gardens"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","144"],["dc.bibliographiccitation.journal","Agriculture, Ecosystems & Environment"],["dc.bibliographiccitation.lastpage","151"],["dc.bibliographiccitation.volume","223"],["dc.contributor.author","Motzke, Iris"],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.author","Saleh, Shahabuddin"],["dc.contributor.author","Wanger, Thomas C."],["dc.contributor.author","Tscharntke, Teja"],["dc.date.accessioned","2017-09-07T11:50:56Z"],["dc.date.available","2017-09-07T11:50:56Z"],["dc.date.issued","2016"],["dc.description.abstract","Pollinator populations respond to environmental changes operating on different spatial scales, but the contribution of scale-dependent habitat management to crop pollination and yield-gap reduction is little understood. Here, we analyze how bee abundance and their effects on cucumber production in tropical homegardens is driven by factors measured on three spatial scales; the (1) homegarden scale (flower cover of the focal homegarden); the (2) adjacent-habitat scale (amount of homegarden habitat within a 200 m radius around the focal homegarden); and the (3) landscape scale (distance of the focal homegarden to the nearest forest from 0 to 2200 m). We also evaluate bee responses according to functional traits such as body size.We found that bees were affected by factors on multiple spatial scales. On the homegarden scale, the percentage flower cover best predicted pollinator attraction, if, on the adjacent-habitat scale the percentage of surrounding homegardens was at least 20%. On the landscape scale, bee abundance, mainly of small species, increased when homegardens were closer to the forest.Increasing abundance of flower-visiting bees increased cucumber yield, with solitary bees being the most abundant flower visitors. We predicted that a 50% loss in bee abundance would translate into a 47% yield and associated income decline. Homegardens with a flower cover of 50%, being surrounded by a homegarden area of 50% and being established <100 m from the forest can translate in a nine-fold higher yield and income compared to homegardens with low flower cover (<15%), and isolated from other homegardens (<20%) and the forest (>1500 m).Our work suggests that farmers need to be aware of management practices not only at the local and landscape scale but also on the adjacent-habitat scale. Only then farmers can increase wild bee populations to reduce crop yield gaps through pollination services."],["dc.identifier.doi","10.1016/j.agee.2016.03.001"],["dc.identifier.gro","3149950"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6663"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.issn","0167-8809"],["dc.subject","Body size; Cucumis sativus; Flower cover; Food security; Indonesia; Net income; Pollinators"],["dc.title","Habitat management on multiple spatial scales can enhance bee pollination and crop yield in tropical homegardens"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","261"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Journal of Applied Ecology"],["dc.bibliographiccitation.lastpage","269"],["dc.bibliographiccitation.volume","52"],["dc.contributor.author","Motzke, Iris"],["dc.contributor.author","Tscharntke, Teja"],["dc.contributor.author","Wanger, Thomas C."],["dc.contributor.author","Klein, Alexandra-Maria"],["dc.contributor.editor","Diekötter, Tim"],["dc.date.accessioned","2017-09-07T11:50:43Z"],["dc.date.available","2017-09-07T11:50:43Z"],["dc.date.issued","2014"],["dc.description.abstract","Pollination can be an essential but often neglected ecosystem service to mitigate crop yield gaps. Pollination services are usually studied in isolation, and their relative role and possible interactions with other factors, such as major management practices, is little understood. We tested how pollination (insect vs. wind- and self-pollination) interacts with weed control, fertilization and insect herbivore control and how these factors as well as flower-visiting bees influence fruit set and yield of cucumber Cucumis sativus L. in 13 traditional Indonesian home gardens. Although insect pollination, fertilization and weed control additively increased crop yield, fertilization and weed control alone could not compensate for pollination loss. Pollination individually accounted for 75% of the yield and was, hence, the most important driver of yield. In contrast, herbivore control through insecticides at commonly applied levels did not increase yield. Yield strongly increased with higher number of flower-visiting bee individuals, while the number of bee individuals in turn was not influenced by weed control, fertilization or herbivore control, but increased with higher number of cucumber flowers. Synthesis and applications. Although multiple management practices influence yield, they cannot compensate yield gaps from pollinator loss in cucumber smallholder production in Indonesia. Our results also show that the widespread use of insecticides without considering the impacts on pest reduction is uneconomical. Here, reducing insecticides caused no income loss and, at the same time, reduces potential risks to important pollinators, which needs to be acknowledged by policy-driven regulations for pesticide application in tropical agroecosystems. Our results stress the importance of enhancing bee populations to facilitate pollination services. Bee management practices, such as sustaining additional food resources for pollinators, need to be established."],["dc.identifier.doi","10.1111/1365-2664.12357"],["dc.identifier.gro","3149886"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/6594"],["dc.language.iso","en"],["dc.notes.status","public"],["dc.relation.issn","0021-8901"],["dc.subject","herbivore control; home garden; Indonesia; nutrients; pollination services; weed control; wild bees"],["dc.title","Pollination mitigates cucumber yield gaps more than pesticide and fertilizer use in tropical smallholder gardens"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dspace.entity.type","Publication"]]