Journalartikel

Jahr der Veröffentlichung: 2008

Seiten: 239-248

Zeitschrift: Seed Science Research

Bandnummer: 18

Heftnummer: 4

ISSN: 0960-2585

eISSN: 1475-2735

DOI Link: https://doi.org/10.1017/S0960258508096190

Verlag: Cambridge University Press

Abstract: 

Community composition and ecosystem processes during succession may be driven partly by traits of plant species that attain dominance. Here, we addressed the hypothesis that Stipa pulcherrima, the dominant grass of abandoned continental grasslands, controls seedling recruitment of co-occurring species through chemical effects of its litter. Eight species with successful and unsuccessful recruitment under field conditions were selected (four familial pairs) to study experimentally the effects of leaf leachate under four temperature regimes. Since fungi developed in leachate-treated Petri dishes, in another experiment seeds were surface sterilized to remove confounding effects of fungi on recruitment. Leachate affected various stages of seedling recruitment: it significantly reduced seed germination (by 33-94%) and radicle elongation, and it delayed germination of seedlings of all species. In two families, species with unsuccessful field recruitment were more negatively affected than the successful ones. In a third family, the species with successful recruitment was more negatively affected, and in the fourth there were no differences. Similar germination responses after exclusion of fungi through seed-surface sterilization suggested that leachate was responsible for the observed effects on recruitment. Besides other traits and physical/microclimatic effects of accumulating litter, S. pulcherrima influences plant community dynamics and may potentially affect ecosystem processes through its secondary compounds.

Harvard-Zitierstil: Ruprecht, E., Donath, T., Otte, A. and Eckstein, R. (2008) Chemical effects of a dominant grass on seed germination of four familial pairs of dry grassland species, Seed Science Research, 18(4), pp. 239-248. https://doi.org/10.1017/S0960258508096190

APA-Zitierstil: Ruprecht, E., Donath, T., Otte, A., & Eckstein, R. (2008). Chemical effects of a dominant grass on seed germination of four familial pairs of dry grassland species. Seed Science Research. 18(4), 239-248. https://doi.org/10.1017/S0960258508096190