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Version 3.24
Publication Type J
Authors Wang, CH; Li, B
Author Full Name Wang, Cheng-huan; Li, Bo
Title Salinity and disturbance mediate direct and indirect plant-plant interactions in an assembled marsh community
Language English
Document Type Article
Author Keywords Competition; Facilitation; Indirect interaction; Salt marsh; Sedge
Abstract Direct and indirect plant-plant interactions play important roles in structuring plant communities, but the relative importance of physical stress and biological disturbance in mediating competitive outcomes remains debated. We conducted two common garden experiments to examine the influence of salinity and disturbance (sediment accretion and clipping) on competitive interactions among three native sedges (Scirpus mariqueter, Scirpus triqueter, and Carex scabrifolia) in the Yangtze estuary. In both experiments, the relative competitive abilities of these plants shifted among different treatments. Competition importance rather than intensity significantly decreased with increasing stress. At the community level, competition importance showed reduced variation along the stress gradient in the disturbance experiment. Notably, the performance of these sedges in three-species mixtures could not be predicted by their competitive relationships in two-species mixtures, which was an indication of indirect interactions. Salinity, disturbance and indirect interactions all affected the competitive dynamics of these sedges, which could explain their different performances and natural distributions in the Yangtze estuary. Our findings of the complex effects of physical factors and multi-species interactions, as well as the different patterns of competition importance along stress gradients at the species level and the community level can improve our understanding of plant community organization in salt marshes and other ecosystems with sharp environmental gradients.
Author Address [Wang, Cheng-huan] East China Normal Univ, Shanghai Key Lab Urbanizat & Ecol Restorat, Sch Life Sci, Shanghai 200241, Peoples R China; [Wang, Cheng-huan; Li, Bo] Fudan Univ, Inst Biodivers Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Shanghai 200433, Peoples R China
Reprint Address Li, B (reprint author), Fudan Univ, Inst Biodivers Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Shanghai 200433, Peoples R China.
E-mail Address bool@fudan.edu.cn
ResearcherID Number Li, Bo/B-8016-2010
ORCID Number Li, Bo/0000-0002-0439-5666
Funding Agency and Grant Number National Basic Research Program of China [2013CB430404]; National Science Foundation of China [30930019, 31100317]; Ministry of Education [20120071110017]; Science and Technology Commission of Shanghai Municipality [14DZ1206003]
Funding Text We would like to thank Mark D. Bertness and the anonymous referees for their very helpful comments on an earlier version of this paper. This study was financially supported by the National Basic Research Program of China (Grant No. 2013CB430404), the National Science Foundation of China (Grant Nos. 30930019 and 31100317) and Ministry of Education (Grant No. 20120071110017) and the Science and Technology Commission of Shanghai Municipality (Grant No. 14DZ1206003).
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Cited Reference Count 66
Times Cited 1
Total Times Cited Count (WoS, BCI, and CSCD) 1
Publisher SPRINGER
Publisher City NEW YORK
Publisher Address 233 SPRING ST, NEW YORK, NY 10013 USA
ISSN 0029-8549
29-Character Source Abbreviation OECOLOGIA
ISO Source Abbreviation Oecologia
Publication Date SEP
Year Published 2016
Volume 182
Issue 1
Beginning Page 139
Ending Page 152
Digital Object Identifier (DOI) 10.1007/s00442-016-3650-1
Page Count 14
Web of Science Category Ecology
Subject Category Environmental Sciences & Ecology
Document Delivery Number DW5FZ
Unique Article Identifier WOS:000383670000012
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