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Influence of water availability on competitive interactions between plant species on sandy soils

Title data

Weigelt, Alexandra ; Röttgermann, Matthias ; Steinlein, Thomas ; Beyschlag, Wolfram:
Influence of water availability on competitive interactions between plant species on sandy soils.
In: Folia Geobotanica. Vol. 35 (2000) Issue 2 . - pp. 169-178.
ISSN 1874-9348
DOI: https://doi.org/10.1007/BF02803095

Official URL: Volltext

Abstract in another language

The gravimetric soil water content of four different successional stages of inland dune vegetation revealed pronounced seasonal changes and particularly a major drought period in late summer. In order to analyze the effect of these seasonal changes on the competitive interactions within these plant communities, the root development of two dominant species (Carex arenaria L. and Deschampsia flexuosa L. (Trin.)) of one of these stages was compared under experimentally manipulated water conditions in a minirhizotron experiment. Under well watered conditions, root growth of C. arenaria was not influenced by competition, but was significantly reduced at low water availability after only 18 days. In both species relative yield (RY) calculated from these data were significantly lower under water shortage than under well watered conditions. These results indicate (1) that soil water status is an important factor for belowground competitive interactions and (2) that seasonal changes in soil water content may have a pronounced effect on the outcome of competition and, in consequence, on the structure of the respective plant communities.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER13966
Keywords: soil water content; belowground competition; plant community; relative competition intensity; relative yield; Carex arenaria; Deschampsia flexuosa
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Biogeography
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 24 Apr 2015 11:58
Last Modified: 25 May 2016 08:42
URI: https://eref.uni-bayreuth.de/id/eprint/11480