Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Climatic extremes lead to species-specific legume facilitation in an experimental temperate grassland

Title data

Arfin Khan, Mohammed Abu Sayed ; Grant, Kerstin ; Beierkuhnlein, Carl ; Kreyling, Jürgen ; Jentsch, Anke:
Climatic extremes lead to species-specific legume facilitation in an experimental temperate grassland.
In: Plant and Soil. Vol. 379 (2014) Issue 1-2 . - pp. 161-175.
ISSN 1573-5036
DOI: https://doi.org/10.1007/s11104-014-2050-8

Abstract in another language

Background Nitrogen-fixing legumes are key species in grassland ecosystems, as their ability to fix atmospheric nitrogen can facilitate neighboring plants. However, little is known about the fate of this legume effect in the face of extreme weather events, which are increasingly expected to occur. Methods Here, we examined experimentally how the presence of a legume modifies above-ground net primary production (ANPP) and nitrogen supply of neighboring non-legumes under annually recurrent pulsed drought and heavy rainfall events by comparing responses of three key species in European grassland versus without legume presence over 4 years. Results Legume presence facilitated community productivity of neighboring non-legumes under ambient weather conditions and also under experimental heavyrainfall. However, no facilitation of community productivity by the legume was found under experimental drought. Productivity of the three target species responded species-specifically to legume presence under different weather conditions: Holcus lanatus was facilitated only under control conditions, Plantago lanceolata was facilitated only under heavy rainfall, and Arrhenatherum elatius was facilitated irrespective of climate manipulations. The legume effects on δ15N, leaf N concentration, and N uptake were also species-specific, yet irrespective of the climate manipulations. The data suggest that the missing legume effect on community productivity under the pulsed drought was rather caused by reduced N-uptake of the target species than by reduced N-fixation by the legume. Conclusions In contrast to heavy rain, the presence of a legume could not effectively buffer community ANPP against the negative effects of extreme drought events in an experimental temperate grassland. Facilitation also depends on the key species that are dominating a grassland community.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER121347
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
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Disturbance Ecology
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: 24 Apr 2015 11:55
Last Modified: 24 Apr 2015 11:55
URI: https://eref.uni-bayreuth.de/id/eprint/11314