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Plant presence and species combination, but not diversity, influence denitrifier activity and the composition of nirK-type denitrifier communities in grassland soil

Title data

Bremer, Christina ; Braker, Gesche ; Matthies, Diethart ; Beierkuhnlein, Carl ; Conrad, Ralf:
Plant presence and species combination, but not diversity, influence denitrifier activity and the composition of nirK-type denitrifier communities in grassland soil.
In: FEMS Microbiology Ecology. Vol. 70 (2009) Issue 3 . - pp. 377-387.
ISSN 1574-6941
DOI: https://doi.org/10.1111/j.1574-6941.2009.00732.x

Abstract in another language

To explore potential links between plant communities, soil denitrifiers and denitrifier function, the impact of presence, diversity (i.e. species richness) and plant combination on nirK-type denitrifier community composition and on denitrifier activity was studied in artificial grassland plant assemblages over two consecutive years. Mesocosms containing 0, 4 and 8 species and different combinations of 2 species were set up. Differences in denitrifier community composition were analysed by canonical correspondence analyses following terminal restriction fragment length polymorphism (T-RFLP) analysis of PCR-amplified nirK gene fragments coding for the copper-containing nitrite reductase. As a measure for denitrifier function, denitrifier enzyme activity (DEA) was determined in the soil samples. Presence as well as combination of plants and sampling time but not plant diversity affected the composition of the nirK-type denitrifier community and denitrifier enzyme activity. Denitrifier activity significantly increased in the presence of plants especially when they were growing during summer and autumn. Overall, we found a strong and direct linkage of denitrifier community composition and functioning, but also that plants had additional effects on denitrifier function that could not be solely explained by their effects on nirK-type denitrifier community composition.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER66210
BAYCEER66209
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography > Chair Biogeography - Univ.-Prof. Dr. Carl Beierkuhnlein
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 05 Jun 2015 06:18
Last Modified: 31 Jul 2015 14:16
URI: https://eref.uni-bayreuth.de/id/eprint/14690