Research Topics
| Teja TscharntkeSummaryCountry: Germany Publications
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Detail Information
Publications
Habitat modification alters the structure of tropical host-parasitoid food websJason M Tylianakis
Agroecology, Georg August University, Waldweg 26, Goettingen D 37073, Germany
Nature 445:202-5. 2007..Altered interaction structure therefore represents an insidious and functionally important hidden effect of habitat modification by humans...
Landscape moderation of biodiversity patterns and processes - eight hypothesesTeja Tscharntke
Agroecology, Department of Crop Sciences, Georg August University, Grisebachstrasse 6, 37077 Gottingen, Germany
Biol Rev Camb Philos Soc 87:661-85. 2012..Shifting our research focus from local to landscape-moderated effects on biodiversity will be critical to developing solutions for future biodiversity and ecosystem service management...- Landscape constraints on functional diversity of birds and insects in tropical agroecosystemsTeja Tscharntke
Agroecology, University of Gottingen, Georg August Universitat, Waldweg 26, D 37073 Gottingen, Germany
Ecology 89:944-51. 2008..This is important for data-based management of tropical human-dominated landscapes sustaining the capacity of communities to reorganize after disturbance and to ensure ecological functioning... - Plant-insect interactions in fragmented landscapesTeja Tscharntke
Agroecology, University of Gottingen, Germany
Annu Rev Entomol 49:405-30. 2004..In some cases theory is far ahead of empirical research. We call for more population data on large spatial and temporal scales to better understand plant-insect populations across fragmented landscapes... - Caveats to quantifying ecosystem services: fruit abortion blurs benefits from crop pollinationMerijn M Bos
Agroecology, University of Goettingen, Waldweg 26, Goettingen D 37073, Germany
Ecol Appl 17:1841-9. 2007.... 
Expansion of mass-flowering crops leads to transient pollinator dilution and reduced wild plant pollinationAndrea Holzschuh
Agroecology, Department of Crop Sciences, Georg August University, Grisebachstr 6, 37077 Gottingen, Germany
Proc Biol Sci 278:3444-51. 2011....- The relationship between agricultural intensification and biological control: experimental tests across EuropeCarsten Thies
Department of Crop Science, Agroecology, Georg August University, Waldweg 26, 37073 Gottingen, Germany
Ecol Appl 21:2187-96. 2011..This shows a changing role of species group identity in diverse enemy communities and a need to consider region-specific landscape management... - Crop-noncrop spillover: arable fields affect trophic interactions on wild plants in surrounding habitatsDavid J Gladbach
Agroecology, Department of Crop Science, Georg August University Gottingen, Gottingen, Germany
Oecologia 166:433-41. 2011..In conclusion, we showed that spillover from cropland affects parasitism rates on related wild plants outside cropland, which has not been shown so far, but can be expected to be a widespread effect shaping noncrop food webs... - Alpha and beta diversity of plants and animals along a tropical land-use gradientMichael Kessler
Albrecht von Haller Institute of Plant Sciences, University of Gottingen, 37073 Gottingen, Germany
Ecol Appl 19:2142-56. 2009..Thus, conservation plans on a landscape scale need to put more emphasis on the high heterogeneity of agroforests and the overarching role of beta diversity shaping overall diversity patterns... - Combining high biodiversity with high yields in tropical agroforestsYann Clough
Agroecology, Department of Crop Sciences, Institute of Geography, Cartography, Geographic Information System, Georg August Universitat Gottingen, D 37077 Gottingen, Germany
Proc Natl Acad Sci U S A 108:8311-6. 2011.... - Diversity, ecosystem function, and stability of parasitoid-host interactions across a tropical habitat gradientJason M Tylianakis
Agroecology, Georg August University, Waldweg 26, Göttingen D 37073, Germany
Ecology 87:3047-57. 2006..We also show that pooling data over long time periods, as in previous studies, can blur the effect of diversity on parasitism rates, and the appropriate spatiotemporal scale of study must be considered... - Rain forest promotes trophic interactions and diversity of trap-nesting Hymenoptera in adjacent agroforestryAlexandra Maria Klein
Department of Agroecology, University of Gottingen, Waldweg 26, D 37073 Gottingen, Germany
J Anim Ecol 75:315-23. 2006.... - Sapling herbivory, invertebrate herbivores and predators across a natural tree diversity gradient in Germany's largest connected deciduous forestStephanie Sobek
Agroecology, Department of Crop Science, University of Gottingen, Waldweg 26, 37073 Gottingen, Germany
Oecologia 160:279-88. 2009..Hence, herbivory on beech appeared to be mediated bottom-up by resource concentration in the sampled forest stands, as well as regulated top-down through biocontrol by natural enemies... - Functional group diversity of bee pollinators increases crop yieldPatrick Hoehn
Agroecology, University of Gottingen, Waldweg 26, 37073 Gottingen, Germany
Proc Biol Sci 275:2283-91. 2008.... - Tradeoffs between income, biodiversity, and ecosystem functioning during tropical rainforest conversion and agroforestry intensificationIngolf Steffan Dewenter
Department of Agroecology, Georg August Universitat Gottingen, Waldweg 26, 37073 Gottingen, Germany
Proc Natl Acad Sci U S A 104:4973-8. 2007..Certification schemes for shade-grown crops may provide a market-based mechanism to slow down current intensification trends... - Importance of pollinators in changing landscapes for world cropsAlexandra Maria Klein
Agroecology, University of Gottingen, Waldweg 26, 37073 Gottingen, Germany
Proc Biol Sci 274:303-13. 2007..Case studies for nine crops on four continents revealed that agricultural intensification jeopardizes wild bee communities and their stabilizing effect on pollination services at the landscape scale... - Beta diversity at different spatial scales: plant communities in organic and conventional agricultureDoreen Gabriel
Agroecology, University of Gottingen, Germany
Ecol Appl 16:2011-21. 2006.... - Multitrophic effects of experimental changes in plant diversity on cavity-nesting bees, wasps, and their parasitoidsAnne Ebeling
Department of Crop Sciences, Griesebachstr 6, 37077, Gottingen, Germany
Oecologia 169:453-65. 2012..The positive relationship between plant diversity and the community similarity of higher trophic levels indicates a community-stabilising effect of high plant diversity... - Spillover edge effects: the dispersal of agriculturally subsidized insect natural enemies into adjacent natural habitatsTatyana A Rand
Agroecology, University of Gottingen, Waldweg 26, 37073 Gottingen, Germany
Ecol Lett 9:603-14. 2006..More empirical work examining the prevalence and significance of such natural enemy spillover will be critical to a broader understanding of fragmentation impacts on insect predator-prey interactions... - Food web structure and biocontrol in a four-trophic level system across a landscape complexity gradientVesna Gagic
Department of Crop Science, Agroecology, Georg August University, Grisebachstrasse 6, 37077 Gottingen, Germany
Proc Biol Sci 278:2946-53. 2011..In conclusion, landscape complexity appeared to foster higher parasitism rates, but simpler food webs, thereby casting doubt on the general importance of food web complexity for ecosystem functioning... - Grass strip corridors in agricultural landscapes enhance nest-site colonization by solitary waspsAndrea Holzschuh
Agroecology, Georg August University, Waldweg 26, D 37073 Gottingen, Germany
Ecol Appl 19:123-32. 2009.... - How do landscape composition and configuration, organic farming and fallow strips affect the diversity of bees, wasps and their parasitoids?Andrea Holzschuh
Agroecology, Georg August University, Waldweg 26, D 37073 Gottingen, Germany
J Anim Ecol 79:491-500. 2010..Thus, we conclude that high proportions of conventionally managed and large crop fields threaten pollination and biological control services at a landscape scale... - Landscape-moderated biodiversity effects of agri-environmental management: a meta-analysisPéter Batáry
Department of Agroecology, Georg August University, Griesebachstrasse 6, 37077 Gottingen, Germany
Proc Biol Sci 278:1894-902. 2011..Therefore, we conclude that AEM should be adapted to landscape structure and the species groups at which they are targeted... - The landscape context of cereal aphid-parasitoid interactionsCarsten Thies
Department of Agroecology, Georg August University Gottingen, Waldweg 26, 37073 Gottingen, Germany
Proc Biol Sci 272:203-10. 2005..Hence, the higher trophic level populations appeared to be determined by smaller landscape sectors owing to dispersal limitation, showing the 'functional spatial scale' for species-specific landscape management... - Agricultural intensification and biodiversity partitioning in European landscapes comparing plants, carabids, and birdsAndreas Flohre
Agroecology, Department of Crop Science, Georg August University, Waldweg 26, 37073 Gottingen, Germany
Ecol Appl 21:1772-81. 2011..In conclusion, a more detailed understanding of AI effects on diversity patterns of various taxa and at multiple spatial scales would contribute to more efficient agri-environmental schemes in agroecosystems... - Bumblebees experience landscapes at different spatial scales: possible implications for coexistenceCatrin Westphal
Department of Agroecology, University of Gottingen, Waldweg 26, 37073, Gottingen, Germany
Oecologia 149:289-300. 2006..We conclude that coexistence in bumblebee communities could potentially be mediated by species-specific differences in the spatial resource utilisation patterns, which should be considered in conservation schemes... - Effects of habitat fragmentation on the genetic structure of the monophagous butterfly Polyommatus coridon along its northern range marginJochen Krauss
Agroecology, University of Gottingen, Waldweg 26, D 37073 Gottingen, Germany
Mol Ecol 13:311-20. 2004..This might be explained by (i). an increasing habitat fragmentation towards the edge of the distribution range and/or (ii). a general reduction of genetic variability towards the northern edge of its distribution... - Local species immigration, extinction, and turnover of butterflies in relation to habitat area and habitat isolationJochen Krauss
Agroecology, University of Gottingen, Waldweg 26, 37073 Gottingen, Germany
Oecologia 137:591-602. 2003..Habitat isolation appears to be less important, as butterflies can cope with the habitat mosaic in our study region... - Linné's floral clock is slow without pollinators--flower closure and plant-pollinator interaction websJochen Fründ
Agroecology, Department of Crop Sciences, Georg August University Gottingen, Grisebachstr 6, 37077 Gottingen, Germany
Ecol Lett 14:896-904. 2011..Our results show for the first time that pollination induces rapid flower closure on the community level. This causes imprecision in Linné's floral clock with far-reaching consequences for plant-pollinator interactions... - Agricultural intensification and cereal aphid-parasitoid-hyperparasitoid food webs: network complexity, temporal variability and parasitism ratesVesna Gagic
Agroecology, Department of Crop Science, Georg August University, Grisebachstrasse 6, 37077, Gottingen, Germany
Oecologia 170:1099-109. 2012..In conclusion, intensified agriculture can support diverse albeit highly variable parasitoid-host communities, but ecosystem functioning might not be easy to predict from observed changes in community structure and composition... - Effects of below- and above-ground herbivores on plant growth, flower visitation and seed setKatja Poveda
Agroecology, Gottingen University, Waldweg 26, 37073, Gottingen, Germany
Oecologia 135:601-5. 2003.... - Fruit set of highland coffee increases with the diversity of pollinating beesAlexandra Maria Klein
Agroecology, University of Gottingen, Waldweg 26, D 37073 Gottingen, Germany
Proc Biol Sci 270:955-61. 2003..Conservation of rainforest adjacent to adequately managed agroforestry systems could improve the yields of farmers... - Bottom-up effects of plant diversity on multitrophic interactions in a biodiversity experimentChristoph Scherber
Georg August University Gottingen, Department of Crop Sciences, Agroecology, Grisebachstrasse 6, 37077 Gottingen, Germany
Nature 468:553-6. 2010..Effects on higher trophic levels are indirectly mediated through bottom-up trophic cascades... - Relative importance of predators and parasitoids for cereal aphid controlMartin H Schmidt
Department of Agroecology, Georg August University, Waldweg 26, D 37073 Gottingen, Germany
Proc Biol Sci 270:1905-9. 2003..In conclusion, a more detailed knowledge of the mechanisms of natural pest control would help to develop environmentally sound crop management with reduced pesticide applications...