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Adaptation of submerged macrophytes to both water depth and flood intensity as revealed by their mechanical resistance

文献类型：期刊论文

作者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.
刊名HYDROBIOLOGIA
出版日期2012-10-01
卷号696期号:1页码:77-93
关键词Flood Water Depth Plant Growth Root Anchorage Strength Stem Tensile Properties Submerged Aquatic Vegetation (Sav)
ISSN号0018-8158
DOI10.1007/s10750-012-1185-y
文献子类Article
英文摘要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.; 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.
WOS关键词PLANT COMMUNITY STRUCTURE ; WHEAT TRITICUM-AESTIVUM ; AQUATIC MACROPHYTES ; MYRIOPHYLLUM-SPICATUM ; PLASTIC RESPONSES ; HYDRAULIC FORCES ; MAXIMUM DEPTH ; SHALLOW LAKES ; MOVING WATER ; LIGHT
WOS研究方向Marine & Freshwater Biology
语种英语
WOS记录号WOS:000307533000005
资助机构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] ; 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]
公开日期2013-01-09
源URL[http://ir.ihb.ac.cn/handle/342005/17220]  
专题水生生物研究所_淡水生态学研究中心_期刊论文
通讯作者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.
作者单位1.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
推荐引用方式
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.

入库方式： OAI收割

来源：水生生物研究所

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