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题名: Effects of water column nutrient enrichment on the growth of Potamogeton maackianus A. Been
作者: Ni, LY
会议文集: JOURNAL OF AQUATIC PLANT MANAGEMENT
会议名称: 40th Annual Meeting of the Aquatic-Plant-Management-Society
会议日期: JUL 16-20, 2000
出版日期: 2001
会议地点: SAN DIEGO, CALIFORNIA
关键词: low light ; sediment redox potential ; tissue nutrient ; peroxidase
通讯作者: Ni, LY, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
收录类别: SCI
部门归属: Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
摘要: Laboratory aquarium experiments were conducted to study the effects of water column nutrient enrichment on the growth of Potamogaeton maackianus A. Been, a dominant submersed macrophyte in Lake Donghu before the 1970s. The plant was grown in fertile sediment, gradients of water nutrients and different shade intensities for 40 days. At the end of the experiment, redox potential of the sediment was negatively related to the water nutrient concentration, while nitrogen and phosphorus concentration, and peroxidase activity of the plant tissue was positively related to the nutrient gradient. Plant growth reduced at light levels corresponding approximately to the depth range of 0.9-1.5 m given current water transparency within Lake Donghu. Within this stress zone, plant chlorophyll content, total shoot length increased primarily with the increased stress and peaked at 1.2 to 1.3 m depths, showing a narrower adaptive range of the plant than the low light stress range. The present study indicates that growth of P maackianus is strongly inhibited by consequences of nutrient enrichment in water. Thus, eutrophication in Lake Donghu during 1970s may have played an important role in the disappearance of this species from the lake.
语种: 英语
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内容类型: 会议论文
URI标识: http://ir.ihb.ac.cn/handle/342005/11829
Appears in Collections:中科院水生所知识产出(2009年前)_会议论文

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Ni, LY.Effects of water column nutrient enrichment on the growth of Potamogeton maackianus A. Been.见:.JOURNAL OF AQUATIC PLANT MANAGEMENT,,2001,83-87
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