Fertile sediment and ammonium enrichment decrease the growth and biomechanical strength of submersed macrophyte Myriophyllum spicatum in an experiment
文献类型：期刊论文
| 作者 | Zhu, Guorong1,2; Cao, Te1; Zhang, Meng3; Ni, Leyi1; Zhang, Xiaolin1 |
| 刊名 | HYDROBIOLOGIA
 |
| 出版日期 | 2014-04-01 |
| 卷号 | 727期号:1页码:109-120 |
| 关键词 | Ammonium enrichment Eutrophication Biomechanical properties Myriophyllum spicatum Nonstructure carbohydrate |
| ISSN号 | 0018-8158 |
| 通讯作者 | Cao, T (reprint author), 7 Donghu South Rd, Wuhan, Hubei, Peoples R China. |
| 中文摘要 | Decline of submersed macrophytes has occurred in eutrophic lakes worldwide. Little is known about effects of nutrient enrichment on biomechanical properties of submersed macrophytes. In a 30-day experiment, Myriophyllum spicatum was cultured in aquaria containing two types of sediment (mesotrophic clay vs. fertile loam) with contrasting water NH4 (+) concentrations (0 vs. 3.0 mg L-1 NH4-N). The plant growth, shoot and root morphology, stem biomechanical properties, and stem total nonstructure carbohydrates content (TNC) were examined. The NH4 (+)-enriched water, particularly combined with the fertile sediment, caused adverse effects on M. spicatum as indicated by reductions in the growth, stem biomechanical properties (tensile force, bending force and structural stiffness), and TNC content. These results indicate that increased sediment fertility and water NH4 (+)-enrichment made the plant more fragile and vulnerable to hydraulic damage, particularly for the upper stem, implying that M. spicatum was prone to uprooting and fracture by hydraulic force, and the broken fragment from parent shoot of M. spicatum might have low-survival potential due to its low-TNC content. This may be a mechanical aspect for the decline of submersed macrophytes and makes it more difficult to restore submersed vegetation in the eutrophic lakes. |
| 英文摘要 | Decline of submersed macrophytes has occurred in eutrophic lakes worldwide. Little is known about effects of nutrient enrichment on biomechanical properties of submersed macrophytes. In a 30-day experiment, Myriophyllum spicatum was cultured in aquaria containing two types of sediment (mesotrophic clay vs. fertile loam) with contrasting water NH4 (+) concentrations (0 vs. 3.0 mg L-1 NH4-N). The plant growth, shoot and root morphology, stem biomechanical properties, and stem total nonstructure carbohydrates content (TNC) were examined. The NH4 (+)-enriched water, particularly combined with the fertile sediment, caused adverse effects on M. spicatum as indicated by reductions in the growth, stem biomechanical properties (tensile force, bending force and structural stiffness), and TNC content. These results indicate that increased sediment fertility and water NH4 (+)-enrichment made the plant more fragile and vulnerable to hydraulic damage, particularly for the upper stem, implying that M. spicatum was prone to uprooting and fracture by hydraulic force, and the broken fragment from parent shoot of M. spicatum might have low-survival potential due to its low-TNC content. This may be a mechanical aspect for the decline of submersed macrophytes and makes it more difficult to restore submersed vegetation in the eutrophic lakes. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Marine & Freshwater Biology |
| 研究领域[WOS] | Marine & Freshwater Biology |
| 关键词[WOS] | LIGHT AVAILABILITY ; AQUATIC PLANTS ; MECHANICAL RESISTANCE ; VALLISNERIA-NATANS ; HYDRAULIC FORCES ; SHALLOW LAKES ; STRESS ; WATER ; MORPHOLOGY ; RESPONSES |
| 收录类别 | SCI |
| 资助信息 | National High Technology Research and the Development Program of China [2012ZX07105-004]; National Natural Science Foundation of China [31270508, 41230853] |
| 语种 | 英语 |
| WOS记录号 | WOS:000330967900008 |
| 公开日期 | 2014-08-07 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/20018]  |
| 专题 | 水生生物研究所_淡水生态学研究中心_期刊论文 |
| 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.Henan Normal Univ, Coll Fisheries, Xinxiang 453007, Peoples R China 3.Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Guorong,Cao, Te,Zhang, Meng,et al. Fertile sediment and ammonium enrichment decrease the growth and biomechanical strength of submersed macrophyte Myriophyllum spicatum in an experiment[J]. HYDROBIOLOGIA,2014,727(1):109-120. |
| APA | Zhu, Guorong,Cao, Te,Zhang, Meng,Ni, Leyi,&Zhang, Xiaolin.(2014).Fertile sediment and ammonium enrichment decrease the growth and biomechanical strength of submersed macrophyte Myriophyllum spicatum in an experiment.HYDROBIOLOGIA,727(1),109-120. |
| MLA | Zhu, Guorong,et al."Fertile sediment and ammonium enrichment decrease the growth and biomechanical strength of submersed macrophyte Myriophyllum spicatum in an experiment".HYDROBIOLOGIA 727.1(2014):109-120. |
入库方式： OAI收割
来源：水生生物研究所
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