at Google ScholarTitle data
Gavrichkova, Olga ; Liberati, Dario ; de Dato, Giovanbattista ; Jaoudé, Renée A. ; Brugnoli, Enrico ; De Angelis, Paolo ; Guidolotti, Gabriele ; Pausch, Johanna ; Spohn, Marie ; Tian, Jing ; Kuzyakov, Yakov:
Effects of rain shortage on carbon allocation, pools and fluxes in a mediterranean shrub ecosystem : A¹³C labeling field study.
In: Science of the Total Environment.
Vol. 627
(2018)
.
- pp. 1242-1252.
ISSN 0048-9697
DOI: https://doi.org/10.1016/j.scitotenv.2018.01.311
Abstract in another language
Hydrological cycle is expected to become the primary cause of ecosystem's degradation in near future under changing climate. Rain manipulation experiments under field conditions provide accurate picture on the responses of biotic processes to changed water availability for plants. A field experiment, mimicking expected changes in rain patterns, was established in a Mediterranean shrub community at Porto Conte, Italy, in 2001. In November 2011 Cistus monspeliensis, one of the dominating shrub species in the Mediterranean basin, was ¹³C labelled on plots subjected to extended rain shortage period and on control non manipulated plots. Carbon (C) allocation was traced by ¹³C dynamics in shoots, shoot-respired CO₂, roots, microbial biomass, K₂SO₄-extractable C and CO₂ respired from soil.
Most of the recovered ¹³C (60%) was respired by shoots within 2 weeks in control plots. In rain shortage treatment, ¹³C remained incorporated in aboveground plant parts. Residence time of ¹³C in leaves was longer under the rain shortage because less 13C was lost by shoot respiration and because ¹³C was re-allocated to leaves from woody tissues. The belowground C sink was weak (3–4% of recovered ¹³C) and independent on rain manipulation. Extended rain shortage promoted C exudation into rhizosphere soil in expense of roots. Together with lowered photosynthesis, this “save” economy of new C metabolites reduces the growing season under rain shortage resulting in decrease of shrub cover and C losses from the system on the long-term.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Additional notes: | BAYCEER144824 |
| Institutions of the University: | Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology > Chair Soil Ecology - Univ.-Prof. Dr. Eva Lehndorff Research Institutions Research Institutions > Central research institutes Research Institutions > Central research institutes > Bayreuth Center of Ecology and Environmental Research- BayCEER Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences |
| Result of work at the UBT: | Yes |
| DDC Subjects: | 500 Science |
| Date Deposited: | 01 Apr 2019 07:06 |
| Last Modified: | 22 Mar 2022 12:42 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/48173 |