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LI Ping, ZHANG Xiu-feng*, MO Shu-qing
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Abstract: Filter-feeding mussel and submerged macrophyte are important components of aquatic ecosystem, playing a key role in determining the structure, function and process of shallow lakes; however, the effects of their coexistence on water environment in shallow lakes are still unclear. Mesocosm experiments (control, mussel treatment, submerged macrophyte treatment, and coexistence of mussel and submerged macrophyte treatment) were conducted to evaluate the effects of filterfeeding mussel Anodonta woodiana, submerged macrophyte Vallisneria natans, and their coexistence on water quality. Results showed that the mussel reduced the growth of phytoplankton measured as Chl-a (P<0.05). The submerged macrophyte decreased the concentrations of total nitrogen (TN), nitrate (NO3--N), total phosphorus (TP), total dissolved phosphorus (TDP) and Chl-a (P<0.05). Coexistence of the mussel and macrophyte decreased both nutrients and Chl-a (P<0.05), meanwhile existence of the mussel promoted growth of the macrophyte. Dry -biomass- and height of the macrophyte in mesocosm were higher with coexistence of the mussel and macrophyte than those of the macrophyte alone at the end of experiment (P<0.05).
Key words: unmanned aerial vehicle imagery (UAV), crown closure, geometric-optical model, linear spectral mixture analysis (SMA).
LI Ping, ZHANG Xiu-feng*, MO Shu-qing. Effects of mussel (Anodonta woodiana), submerged macrophyte (Vallisneria natans) and their coexistence on water quality.[J]. cje.
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URL: http://www.cje.net.cn/EN/abstract/abstract20055.shtml
http://www.cje.net.cn/EN/Y2016/V35/I6/1589