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      Influence of Potamogeton crispus growth on nutrients in the sediment and water of Lake Tangxunhu

      Mi, W. J.; Zhu, Duanwei; Zhou, Y. Y.; Zhou, H. D.; Yang, Tewu; Hamilton, David P.
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      2008_Mi_Potamogeton.pdf
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      DOI
       10.1007/s10750-007-9254-3
      Link
       www.springerlink.com
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      Mi, W. J., Zhu, D. W., Zhou, Y. Y., Zhou, H. D., Yang, T. W. & Hamilton, D. P. (2008). Influence of Potamogeton crispus growth on nutrients in the sediment and water of Lake Tangxunhu. Hydrobiologia, 603, 139- 146.
      Permanent Research Commons link: https://hdl.handle.net/10289/2855
      Abstract
      An incubation experiment was performed on Potamogeton crispus (P. crispus) using sediment collected from Lake Tangxunhu in the center of China, in order to determine the effects of plant growth on Fe, Si, Cu, Zn, Mn, Mg, P, and Ca concentrations in the sediments and overlying waters. After 3 months of incubation, Ca, Mg, and Si concentrations in the water column were significantly lower, and P and Cu concentrations were significantly higher than in unplanted controls. The effect of P. crispus growth on sediment pore waters and water-extractable elements varied. Concentrations of Ca, Mg, Si, Fe, Cu, and Zn were significantly higher, and P was significantly lower, than in pore waters of the control. Water-extracted concentrations of Fe, Mg, and Si in the sediments were lower, and P was higher, than in the control. Presence of P. crispus generally enhanced concentration gradients of elements between pore waters and overlying waters but not for P. The growth of P. crispus was associated with an increase in water pH and formation of root plaques, resulting in complex effects on the sediment nutritional status.
      Date
      2008
      Type
      Journal Article
      Publisher
      Springer
      Rights
      This is an author’s accepted version of an article published in the journal: Hydrobiologia. ©2008 Springer. The original publication is available at www.springerlink.com.
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