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Adaptation of submerged macrophytes to both water depth and flood intensity as revealed by their mechanical resistance
Zhu, Guorong1,2; Li, Wei1,2; Zhang, Meng3; Ni, Leyi1; Wang, Shengrui4; Ni, LY (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.
2012-10-01
Source PublicationHYDROBIOLOGIA
ISSN0018-8158
Volume696Issue:1Pages:77-93
AbstractLittle is known about the mechanical resistance response of submerged macrophytes to floods. An experiment was conducted to investigate the plant growth, root anchorage strength, and stem tensile properties of five submerged macrophytes under three initial water levels (1.0, 2.5, and 4.0 m) with four water level fluctuation speeds (0, 5, 15, and 25 cm d(-1)). Our results demonstrate that the biomass, relative growth rate, root anchorage strength, and stem tensile properties of the five species decreased with increasing initial water level, suggesting that deep water can inhibit plant growth and decrease their mechanical resistance. Floods weakened the stem tensile properties and strengthened the root performances of Myriophyllum spicatum, Hydrilla verticillata, and Potamogeton malaianus in shallow water. However, floods induced opposite mechanical resistance responses from plants in deep water, indicating a possible trade-off between stem breakage and uprooting under flooding conditions. M. spicatum, Ceratophyllum demersum, and P. malaianus were more tolerant of deep water and flood intensity than Potamogeton maackianus and H. verticillata, as indicated by their larger biomass, plant heights, stem tensile properties, and root anchorage strength. This is the first article that mechanically explains the competitive capability and survival potential of submerged macrophytes to water depth and flood intensity.; Little is known about the mechanical resistance response of submerged macrophytes to floods. An experiment was conducted to investigate the plant growth, root anchorage strength, and stem tensile properties of five submerged macrophytes under three initial water levels (1.0, 2.5, and 4.0 m) with four water level fluctuation speeds (0, 5, 15, and 25 cm d(-1)). Our results demonstrate that the biomass, relative growth rate, root anchorage strength, and stem tensile properties of the five species decreased with increasing initial water level, suggesting that deep water can inhibit plant growth and decrease their mechanical resistance. Floods weakened the stem tensile properties and strengthened the root performances of Myriophyllum spicatum, Hydrilla verticillata, and Potamogeton malaianus in shallow water. However, floods induced opposite mechanical resistance responses from plants in deep water, indicating a possible trade-off between stem breakage and uprooting under flooding conditions. M. spicatum, Ceratophyllum demersum, and P. malaianus were more tolerant of deep water and flood intensity than Potamogeton maackianus and H. verticillata, as indicated by their larger biomass, plant heights, stem tensile properties, and root anchorage strength. This is the first article that mechanically explains the competitive capability and survival potential of submerged macrophytes to water depth and flood intensity.
SubtypeArticle
KeywordFlood Water Depth Plant Growth Root Anchorage Strength Stem Tensile Properties Submerged Aquatic Vegetation (Sav)
Department[Zhu, Guorong; Li, Wei; Ni, Leyi] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Zhu, Guorong; Li, Wei] Chinese Acad Sci, Grad Univ, Wuhan, Hubei, Peoples R China; [Zhang, Meng] Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China; [Wang, Shengrui] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
DOI10.1007/s10750-012-1185-y
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding Organizationproject "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013] ; project "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013] ; project "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013] ; project "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013]
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000307533000005
WOS KeywordPLANT COMMUNITY STRUCTURE ; WHEAT TRITICUM-AESTIVUM ; AQUATIC MACROPHYTES ; MYRIOPHYLLUM-SPICATUM ; PLASTIC RESPONSES ; HYDRAULIC FORCES ; MAXIMUM DEPTH ; SHALLOW LAKES ; MOVING WATER ; LIGHT
Funding Organizationproject "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013] ; project "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013] ; project "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013] ; project "Core Technology and Model Project for Environmental and Ecological Improvement of Erhai" (National High Technology Research and Development Program of China) [2012ZX07105004, 2008ZX07101-013]
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/17220
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorNi, LY (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Wuhan, Hubei, Peoples R China
3.Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China
4.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Guorong,Li, Wei,Zhang, Meng,et al. Adaptation of submerged macrophytes to both water depth and flood intensity as revealed by their mechanical resistance[J]. HYDROBIOLOGIA,2012,696(1):77-93.
APA Zhu, Guorong,Li, Wei,Zhang, Meng,Ni, Leyi,Wang, Shengrui,&Ni, LY .(2012).Adaptation of submerged macrophytes to both water depth and flood intensity as revealed by their mechanical resistance.HYDROBIOLOGIA,696(1),77-93.
MLA Zhu, Guorong,et al."Adaptation of submerged macrophytes to both water depth and flood intensity as revealed by their mechanical resistance".HYDROBIOLOGIA 696.1(2012):77-93.
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