eHALOPH - Halophytes Database

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
Source	OECOLOGIA
Language	English
Document Type	Article
Author Keywords	Competition; Facilitation; Indirect interaction; Salt marsh; Sedge
Keywords Plus	STRESS-GRADIENT HYPOTHESIS; POSITIVE SPECIES INTERACTIONS; ABIOTIC STRESS; SALT-MARSH; BIOTIC INTERACTIONS; RELATIVE IMPORTANCE; ONTOGENIC SHIFTS; COMPETITION; FACILITATION; ZONATION
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
Plants associated with this reference	Carex scabrifolia