Drought responses of Arrhenatherum elatius grown in plant assemblages of 
varying species richness

Otieno, D.; Kreyling, J.; Purcell, A.; Herold, N.; Grant, K.; Tenhunen, J.; Beierkuhnlein, C.; Jentsch, A.

doi:10.1016/j.actao.2011.10.002

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

このアイテムの新しいバージョンが利用可能です:
https://pure.mpg.de/pubman/item/item_1693676_6

詳細要約

公開

学術論文

Drought responses of Arrhenatherum elatius grown in plant assemblages of varying species richness

MPS-Authors

/persons/resource/persons62407

Herold, N.
Soil and Ecosystem Processes, Dr. M. Schrumpf, Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Otieno, D., Kreyling, J., Purcell, A., Herold, N., Grant, K., Tenhunen, J., Beierkuhnlein, C., & Jentsch, A. (2012). Drought responses of Arrhenatherum elatius grown in plant assemblages of varying species richness. Acta oecologica: international journal of ecology, 39, 11-17. doi:10.1016/j.actao.2011.10.002.

引用: https://hdl.handle.net/11858/00-001M-0000-000E-DD7B-4

要旨

Evidence exists that plant community diversity influences productivity of individual members and their resistance and resilience during and after perturbations. We simulated drought within the long-term EVENT experimental site in the Ecological-Botanical Garden, University of Bayreuth to understand how Arrhenatherum elatius (L) responds to water stress when grown in three different plant assemblages. The set up consisted of five replications for each factorial combination of drought and plant assemblages differing in functional diversity. Leaf water potential (Psi(L)), leaf gas exchange, natural delta C-13, plant biomass and cover were measured. Imposed drought had different effects on A. elatius, depending on plant assemblage composition. Severe water stress was however, avoided by slowing down the rate of decline in Psi(L), and this response was modified by community composition. High Psi(L) was associated with high stomatal conductance and leaf photosynthesis. Biomass production of A. elatius increased due to drought stress only in the least diverse assemblage, likely due to increased tillering and competitive advantage against neighbors in the drought-treated plants. Our results indicate that beneficial traits among plant species in a community may be responsible for the enhanced capacity to survive drought stress. Resistance to drought may, therefore, not be linked to species richness, but rather to the nature of interaction that exists between the community members. (C) 2011 Elsevier Masson SAS. All rights reserved.