Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1890/12-1620.1
Titel (primär) Bee diversity effects on pollination depend on functional complementarity and niche shifts
Autor Fründ, J.; Dormann, C.F.; Holzschuh, A.; Tscharntke, T.
Quelle Ecology
Erscheinungsjahr 2013
Department CLE
Band/Volume 94
Heft 9
Seite von 2042
Seite bis 2054
Sprache englisch
Keywords biodiversity–ecosystem functioning, complementarity effect, functional diversity, interspecific competition, niche plasticity, plant–animal interactions, plant pollinator network, plant reproduction, specialization
UFZ Querschnittsthemen RU1;

Biodiversity is important for many ecosystem processes. Global declines in pollinator diversity and abundance have been recognized, raising concerns about a pollination crisis of crops and wild plants. However, experimental evidence for effects of pollinator species diversity on plant reproduction is extremely scarce. We established communities with 1–5 bee species to test how seed production of a plant community is determined by bee diversity. Higher bee diversity resulted in higher seed production, but the strongest difference was observed for one compared to more than one bee species. Functional complementarity among bee species had a far higher explanatory power than bee diversity, suggesting that additional bee species only benefit pollination when they increase coverage of functional niches. In our experiment, complementarity was driven by differences in flower and temperature preferences. Interspecific interactions among bee species contributed to realized functional complementarity, as bees reduced interspecific overlap by shifting to alternative flowers in the presence of other species. This increased the number of plant species visited by a bee community and demonstrates a new mechanism for a biodiversity–function relationship (“interactive complementarity”). In conclusion, our results highlight both the importance of bee functional diversity for the reproduction of plant communities and the need to identify complementarity traits for accurately predicting pollination services by different bee communities.

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Fründ, J., Dormann, C.F., Holzschuh, A., Tscharntke, T. (2013):
Bee diversity effects on pollination depend on functional complementarity and niche shifts
Ecology 94 (9), 2042 - 2054 10.1890/12-1620.1