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1. Landscape context affects species richness in addition to local habitat quality.

2. Species traits, such as body size and trophic rank, and biotic interactions are correlated with specific spatial scales of response.

3. Complementarity of insect species contributes to biodiversity-ecosystem functioning relationships, while non-random loss of species richness will reduce ecosystem functioning.


In April 2009, eight trap nests were installed on each of 20 grassland plots in Hainich-Dün, two on each of four wooden posts. Moreover, eight trap nests were installed in the canopy of 10 forest plots. They will be deinstalled at the end of September. The trap nesting bees and wasps will be reared after a diapause, pinned and identified. Food in the brood cells will be classified to arrange food webs.
Furthermore, the Red Mason Bee (Osmia bicornis) will be released on 8 – 10 grassland plots in Hainich-Dün and Schwäbische Alb to observe pollen foraging times, nest activity and individual fitness of the bees, nesting in 8 trap nests on each plot. Half of the plots are located nearby a flowering oilseed rape field, the other half as control has no oilseed rape in the neighborhood. The study aims to discover the impact of a time limited mass food resource as well as the influence of landscape structure on breeding success (number of cells, weight of cocoons) and individual fitness.


Doc
Auswirkungen von Region, Pflanzendiversität und Massentracht auf den Reproduktionserfolg der roten Mauerbiene Osmia Bicornis
Aumer D.(2010): Auswirkungen von Region, Pflanzendiversität und Massentracht auf den Reproduktionserfolg der roten Mauerbiene Osmia Bicornis. Bachelor thesis, University Bayreuth
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Welchen Einfluss hat Raps auf das Nestbauverhalten der roten Mauerbiene Osmia bicornis?
Kühsel S. (2009): Welchen Einfluss hat Raps auf das Nestbauverhalten der roten Mauerbiene Osmia bicornis? Bachelor thesis, University Bayreuth
Doc
Vergleich der Landschaftsstruktur der drei Biodiversitätsexploratorien Schorfheide-Chorin, Hainich und Schwäbische Alb
Ortmann A.(2010): Vergleich der Landschaftsstruktur der drei Biodiversitätsexploratorien Schorfheide-Chorin, Hainich und Schwäbische Alb. Bachelor thesis, University Goettingen
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Rothenwöhrer C. (2012): Plant- herbivore- predator communities and grassland management intensity — Implications for biodiversity conservation practices on local and landscape scales. Dissertation, University Goettingen
More information:  ediss.uni-goettingen.de
Doc
Schutz von Grashalm-minierenden Insekten im Wirtschaftsgrünland
Rothenwöhrer C., Scherber C., Tscharntke T. (2013): Grassland management for stem-boring insects: Abandoning small patches is better than reducing overall intensity. Agriculture, Ecosystems & Environment 167, 38–42. doi: 10.1016/j.agee.2013.01.005
More information:  doi.org
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Steckel J. (2013): Effects of landscape heterogeneity and land use on interacting groups of solitary bees, wasps and their flying and ground-dwelling antagonists. Dissertation, University Wuerzburg
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Landschaftsvielfalt und –struktur wirken sich unterschiedlich auf stengelnistende Bienen, Wespen und ihre Gegenspieler aus
Steckel J., Westphal C., Peters M. K., Bellach M., Rothenwöhrer C., Erasmi S., Scherber C., Tscharntke T., Steffan-Dewenter I. (2014): Landscape composition and configuration differently affect trap-nesting bees, wasps and their antagonists. Biological Conservation 172, 56–64. doi: 10.1016/j.biocon.2014.02.015
More information:  doi.org

Scientific assistants

Dr. Christoph Scherber
Project manager
Dr. Christoph Scherber
Prof. Dr. Ingolf Steffan-Dewenter
Project manager
Prof. Dr. Ingolf Steffan-Dewenter
Prof. Dr. Teja Tscharntke
Project manager
Prof. Dr. Teja Tscharntke
Dr. Catrin Westphal
Project manager
Dr. Catrin Westphal
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