Title: Large clones on cliff faces : expanding by rhizomes through crevices
Authors : Liu, Feng-Hong
Yu, Fei-Hai
Liu, Wen-Sheng
Krüsi, Bertil
Cai, Xiao-Hu
Schneller, Jakob
Dong, Ming
Published in : Annals of Botany
Volume(Issue) : 100
Issue : 1
Pages : 51
Pages to: 54
Publisher / Ed. Institution : Oxford University Press
Issue Date: 2007
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Cliff ecology; Oxyria sinensis; Clonal diversity; Sichuan China
Subject (DDC) : 580: Plants (Botany)
Abstract: Background and Aims. Large clones of rhizomatous plants are found in many habitats, but little is known about whether such clones also occur on cliff faces where environmental conditions are extremely harsh and heterogeneous. Methods. Using molecular (intersimple sequence repeat, ISSR) markers, the genotypic composition of a cliff-fac population of Oxyria sinensis in Sichuan, China, was investigated. Key Results. The 98 O. sinensis ramets sampled belonged to 12 different genotypes (clones). The three most frequen clones were represented with 45, 22 and 12 ramets, respectively; the remaining nine were represented with only one to five ramets. The three largest clones spanned at least 2.7 m in the vertical direction and 4.6–6.9 m in the horizontal direction on the cliff face. Conclusions. On the cliff face, large clones of O. sinensis are formed by rhizomes growing along the crevices. Expansion by rhizomes may help O. sinensis to exploit the patchy resources and support establishment and growth of new ramets. Moreover, rooted ramets connected by rhizomes may effectively reduce the susceptibility of O. sinensis to rock fall and erosion and thus greatly improve the chances for long-term survival. The multi-clone structure indicates that sexual reproduction is also important for the long-term persistence of O. sinensis populations on cliffs.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Publication type: Article in scientific Journal
DOI : 10.1093/aob/mcm086
ISSN: 0305-7364
URI: https://digitalcollection.zhaw.ch/handle/11475/7284
Appears in Collections:Publikationen Life Sciences und Facility Management

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