Influence of submerged macrophyte Potamogeton crispus growth on nutrient translocation in sediments

Sediments with and without Potamogeton crispus were simultaneously incubated outdoors to determine the effects of plant growth on the nutrients migration. After 3 months of incubation, the Fe, Mn, Si, Cu and Zn concentrations of the plant roots were significantly higher than those of the shoots (p < .05). Additionally, when P. crispus was present, the nutrient contents varied in the descending order Ca (18.54 mg/L) > Mg (4.132 mg/L) > P (8.211 μg/L) > Cu (5.45 μg/L) > Mn (0.151 μg/L) in the overlying water and in the order Ca (24.31 mg/L) > Mg (11.33 mg/L) > Mn (1349 μg/L) > P (125 μg/L) > Cu (18.91 μg/L) in the pore water. The presence of P. crispus also significantly increased the P concentration of the overlying water and the Ca, Mg and Mn concentrations of the pore water (p < .05). Furthermore, the growth of P. crispus increased the water‐extractable P level in the sediment but decreased the amounts of available Fe and Mn in the sediment (p < .05). These results indicate that the presence of P. crispus can lead to the redistribution of nutrients in sediments and in the overlying water, and this redistribution is conducive to the restoration of contaminated sediments. We suggest that more submerged macrophytes be planted in polluted water bodies to improve the water restoration effect.

[1]  T. Lauridsen,et al.  A comparison of nutrient uptake efficiency and growth rate between different macrophyte growth forms. , 2020, Journal of environmental management.

[2]  Yunchao Wu,et al.  Contrasting root length, nutrient content and carbon sequestration of seagrass growing in offshore carbonate and onshore terrigenous sediments in the South China Sea. , 2019, The Science of the total environment.

[3]  G. Bonanno,et al.  Translocation, accumulation and bioindication of trace elements in wetland plants. , 2018, The Science of the total environment.

[4]  Zhicong Wang,et al.  Environmental effects by introducing Potamogeton crispus to recover a eutrophic Lake. , 2018, The Science of the total environment.

[5]  Xianguo Lu,et al.  Performance of Iron Plaque of Wetland Plants for Regulating Iron, Manganese, and Phosphorus from Agricultural Drainage Water , 2018 .

[6]  X. Qian,et al.  A multi-species modelling approach to select appropriate submerged macrophyte species for ecological restoration in Gonghu Bay, Lake Taihu, China , 2017 .

[7]  M. Bartoli,et al.  Nitrogen uptake and coupled nitrification–denitrification in riverine sediments with benthic microalgae and rooted macrophytes , 2017, Aquatic Sciences.

[8]  Shiyong Yu,et al.  Metal release/accumulation during the decomposition of Potamogeton crispus in a shallow macrophytic lake. , 2016, Journal of environmental sciences.

[9]  D. Trigueros,et al.  Influence of lead-doped hydroponic medium on the adsorption/bioaccumulation processes of lead and phosphorus in roots and leaves of the aquatic macrophyte Eicchornia crassipes. , 2013, Journal of environmental management.

[10]  U. Rascher,et al.  Dynamics of organic acid occurrence under flooding stress in the rhizosphere of three plant species from the water fluctuation zone of the Three Gorges Reservoir, P.R. China , 2011, Plant and Soil.

[11]  H. Jarvie,et al.  Delivery and cycling of phosphorus in rivers: a review. , 2008, The Science of the total environment.

[12]  David P. Hamilton,et al.  Influence of Potamogeton crispus growth on nutrients in the sediment and water of Lake Tangxunhu , 2008, Hydrobiologia.

[13]  W. Quan,et al.  Uptake and distribution of N, P and heavy metals in three dominant salt marsh macrophytes from Yangtze River estuary, China. , 2007, Marine environmental research.

[14]  Wei Deng,et al.  Growth and root distribution of Vallisneria natans in heterogeneous sediment environments , 2007 .

[15]  J. Espinar,et al.  Sediment phosphate composition in relation to emergent macrophytes in the Doñana Marshes (SW Spain). , 2006, Water research.

[16]  L. Nurminen,et al.  Effects of different macrophyte growth forms on sediment and P resuspension in a shallow lake , 2005, Hydrobiologia.

[17]  Ma Jian-ying.  The qualitative assessment of water environment quality in China , 2005 .

[18]  A. Bezbaruah,et al.  pH, redox, and oxygen microprofiles in rhizosphere of bulrush (Scirpus validus) in a constructed wetland treating municipal wastewater , 2004, Biotechnology and bioengineering.

[19]  M. Hupfer,et al.  Immobilisation of phosphorus by iron-coated roots of submerged macrophytes , 2003, Hydrobiologia.

[20]  G. Ganf,et al.  Modification of sediment redox potential by three contrasting macrophytes: implications for phosphorus adsorption/desorption , 2003 .

[21]  N. Cedergreen,et al.  Sources of nutrients to rooted submerged macrophytes growing in a nutrient‐rich stream , 2002 .

[22]  A. Sharpley,et al.  A Comparison of Fluvial Sediment Phosphorus (P) Chemistry in Relation to Location and Potential to Influence Stream P Concentrations , 2001 .

[23]  J. Stevenson,et al.  Effects of different submersed macrophytes on sediment biogeochemistry , 1997 .

[24]  Stephen R. Carpenter,et al.  Sediment interactions with submersed macrophyte growth and community dynamics , 1991 .

[25]  A. Mehlich.  Mehlich 3 soil test extractant: A modification of Mehlich 2 extractant , 1984 .