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Comparative drought resistance of temperate grassland species : testing performance trade-offs and the relation to distribution

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00005090
URN to cite this document: urn:nbn:de:bvb:703-epub-5090-2

Title data

Jung, Eun-Young ; Gaviria, Julian ; Sun, Shanwen ; Engelbrecht, Bettina M. J.:
Comparative drought resistance of temperate grassland species : testing performance trade-offs and the relation to distribution.
In: Oecologia. Vol. 192 (1 April 2020) Issue 4 . - pp. 1023-1036.
ISSN 1432-1939
DOI der Verlagsversion: https://doi.org/10.1007/s00442-020-04625-9

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Project information

Project title:
Project's official titleProject's id
Biodiversity ExploratoriesSPP 1374

Project financing: Deutsche Forschungsgemeinschaft

Abstract

To improve projections of consequences of increasing intensity and frequency of drought events for grasslands, we need a thorough understanding of species performance responses to drought, of performance trade-offs and how drought resistance is related to species distributions. However, comparative and quantitative assessments of whole-plant drought resistance that allow to rigorously address these aspects are lacking for temperate grassland species. We conducted a common garden experiment with 40 common temperate grassland species to compare species survival and growth under intense drought and well-irrigated conditions. Overall, survival and growth were significantly reduced under drought, with the effect varying across species. Species ranking of drought damage and survival remained consistent with progressing drought. No performance trade-offs emerged between optimal growth and drought resistance of survival (‘growth–stress tolerance’ trade-off hypothesis), or between growth under well-watered and dry conditions (‘growth rates’ trade-off hypothesis). Species local- and large-scale association with moisture (Ellenberg F value and rainfall niche) was not related to their drought resistance. Overall, our results imply that trade-offs and differences of species fundamental drought resistance are not the main drivers of hydrological niche differentiation, species coexistence and their distribution across moisture gradients. The comparative experimental assessment of species whole-plant drought responses we present provides a basis to increase our understanding of current grassland responses to variation of moisture regimes and for projecting consequences of future changes.

Further data

Item Type: Article in a journal
DDC Subjects: 500 Science > 500 Natural sciences
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology > Chair Plant Ecology - Univ.-Prof. Dr. Steven Ian Higgins
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 Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Ecology
Research Institutions
Research Institutions > Research Centres
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-5090-2
Date Deposited: 23 Sep 2020 05:59
Last Modified: 23 Sep 2020 05:59
URI: https://epub.uni-bayreuth.de/id/eprint/5090

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