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Testing the Stress-Gradient Hypothesis at the Roof of the World: Effects of the Cushion Plant Thylacospermum caespitosum on Species Assemblages
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SYSNO ASEP 0397479 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Testing the Stress-Gradient Hypothesis at the Roof of the World: Effects of the Cushion Plant Thylacospermum caespitosum on Species Assemblages Author(s) Dvorský, Miroslav (BU-J) ORCID, RID
Doležal, Jiří (BU-J) RID, ORCID
Kopecký, Martin (BU-J) RID, ORCID
Chlumská, Zuzana (BU-J) RID, ORCID
Janatková, Kateřina (BU-J) RID
Altman, Jan (BU-J) RID, ORCID
de Bello, Francesco (BU-J) RID, ORCID
Řeháková, Klára (BU-J) RID, ORCIDSource Title PLoS ONE. - : Public Library of Science - ISSN 1932-6203
Roč. 8, č. 1 (2013), e53514Number of pages 17 s. Language eng - English Country US - United States Keywords cushion plants ; facilitation ; competition Subject RIV EH - Ecology, Behaviour R&D Projects GD206/08/H044 GA ČR - Czech Science Foundation (CSF) IAA600050802 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) Institutional support BU-J - RVO:67985939 CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000313552400026 DOI 10.1371/journal.pone.0053514 Annotation Many cushion plants ameliorate the harsh environment they inhabit in alpine ecosystems and act as nurse plants, with significantly more species growing within their canopy than outside. These facilitative interactions seem to increase with the abiotic stress, thus supporting the stress-gradient hypothesis. We tested this prediction by exploring the association pattern of vascular plants with the dominant cushion plant Thylacospermum caespitosum (Caryophyllaceae) in the arid Trans-Himalaya, where vascular plants occur at one of the highest worldwide elevational limits. We compared plant composition between 1112 pair-plots placed both inside cushions and in surrounding open areas, in communities from cold steppes to subnival zones along two elevational gradients (East Karakoram: 4850–5250 m and Little Tibet: 5350–5850 m). We used PERMANOVA to assess differences in species composition, Friedman-based permutation tests to determine individual species habitat preferences, species habitat preferences, species-area curves to assess whether interactions are size-dependent and competitive intensity and importance indices to evaluate plant-plant interactions. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2014
Number of the records: 1