%0 Journal Article
%T Effects of Submerged Plants on the Growth of Eutrophic Algae and Nutrient Removal in Constructed Wetlands
%A Zhiqiang Yan
%A Benru Song
%A Li Zhang
%A Mian Liu
%A Yan Liu
%A Xiaoye Wu
%A Yunhui Tian
%A Zhanghe Chen
%A Jiangang Zhao
%J Open Access Library Journal
%V 3
%N 10
%P 1-11
%@ 2333-9721
%D 2016
%I Open Access Library
%R 10.4236/oalib.1103056
%X <div style="text-align:justify;">
	<span style="line-height:1.5;">We studied the nutrition removal, taxa and density
of phytoplankton, concentration of chlorophyll-a (chl-a) of the monoculture
constructed wetlands (CWs) planted with submerged macrophytes </span><i style="line-height:1.5;">Hydrilla
verticillata</i><span style="line-height:1.5;">, </span><i style="line-height:1.5;">Elodea nuttallii</i><span style="line-height:1.5;">, </span><i style="line-height:1.5;">Myriophyllum spicatum</i><span style="line-height:1.5;"> and </span><i style="line-height:1.5;">Vallisneria
natans</i><span style="line-height:1.5;"> to probe the nutrient and alga removal effects of the CWs. The CWs
had significant differences (P &lt; 0.01) in removing
different nutrients, with </span><i style="line-height:1.5;">E. nuttallii</i><span style="line-height:1.5;"> wetland having the highest
removal rate of total phosphorus (TP), </span><i style="line-height:1.5;">H. verticillata</i><span style="line-height:1.5;"> wetland having
the highest removal rate of ammonia nitrogen (NH</span><sub>4</sub><span style="line-height:1.5;">-N) and </span><i style="line-height:1.5;">M. spicatum</i><span style="line-height:1.5;"> wetland having the highest
removal </span><span style="line-height:1.5;">rate of chemical oxygen demand (COD</span><sub>Cr</sub><span style="line-height:1.5;">). Removal rates
of all the nutrients except COD</span><sub>Cr</sub><span style="line-height:1.5;"> changed obviously with seasons.
The concentrations of chl-a and the density of phytoplankton in the CWs also
varied with seasons, with the values being significantly lower in winter than
in summer (P &lt; 0.01). </span><i style="line-height:1.5;">E. nuttallii</i><span style="line-height:1.5;"> wetland had a significantly lower chl-a concentration than the other wetlands (P &lt; 0.01). Macrophyte biomass
was significantly different among these wetlands (P &lt; 0.01). </span><i style="line-height:1.5;">E.
nuttallii</i><span style="line-height:1.5;"> wetland had higher inhibition ability on algae than the other
three wetlands in summer (P &lt; 0.05), and </span><i style="line-height:1.5;">E. nuttallii</i><span style="line-height:1.5;"> and </span><i style="line-height:1.5;">M. spicatum</i><span style="line-height:1.5;"> wetlands than </span><i style="line-height:1.5;">H. verticillata</i><span style="line-height:1.5;"> and </span><i style="line-height:1.5;">V. natans</i><span style="line-height:1.5;"> wetlands in winter (P &lt; 0.05).</span>
</div>
%K Constructed Wetlands
%K Submerged Plant
%K Biomass
%K Nutrient Removal
%K Alga Density
%U http://www.oalib.com/paper/5273813