Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1073/pnas.1104015108
Titel (primär) More diverse plant communities have higher functioning over time due to turnover in complementary dominant species
Autor Allan, E.; Weisser, W.; Weigelt, A.; Roscher, C.; Fischer, M.; Hillebrand, H.
Quelle Proceedings of the National Academy of Sciences of the United States of America
Erscheinungsjahr 2011
Department BZF
Band/Volume 108
Heft 41
Seite von 17034
Seite bis 17039
Sprache englisch
Supplements https://www.pnas.org/highwire/filestream/916714/field_highwire_adjunct_files/0/pnas.1908117117.sapp.pdf
Keywords Jena Experiment; redundancy; grassland; species richness; evenness
Abstract

More diverse communities have been shown to have higher and more temporally stable ecosystem functioning than less diverse ones, suggesting they should also have a consistently higher level of functioning over time. Diverse communities could maintain consistently high function because the species driving function change over time (functional turnover) or because they are more likely to contain key species with temporally stable functioning. Across 7 y in a large biodiversity experiment, we show that more diverse plant communities had consistently higher productivity, that is, a higher level of functioning over time. We identify the mechanism for this as turnover in the species driving biomass production; this was substantial, and species that were rare in some years became dominant and drove function in other years. Such high turnover allowed functionally more diverse communities to maintain high biomass over time and was associated with higher levels of complementarity effects in these communities. In contrast, turnover in communities composed of functionally similar species did not promote high biomass production over time. Thus, turnover in species promotes consistently high ecosystem function when it sustains functionally complementary interactions between species. Our results strongly reinforce the argument for conservation of high biodiversity.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11730
Allan, E., Weisser, W., Weigelt, A., Roscher, C., Fischer, M., Hillebrand, H. (2011):
More diverse plant communities have higher functioning over time due to turnover in complementary dominant species
Proc. Natl. Acad. Sci. U.S.A. 108 (41), 17034 - 17039 10.1073/pnas.1104015108