TY - JOUR
T1 - Characteristics of zoobenthos community and potential ecological risk of heavy metals in urban rivers in Shanghai
AU - Dai, Qi
AU - Li, Shuang
AU - Zhou, Zhong Liang
AU - Chen, Li Qiao
PY - 2010/10
Y1 - 2010/10
N2 - From October 2007 to October 2008, a monthly investigation was conducted on the community structure of zoobenthos in four urban rivers, including Wuchaogang River, Henggang River, Chaoyang River, and Caoyanghuanbang River, in Shanghai. A total of 20 zoobenthos species were recorded, among which, 14 species were of Mollusc, and 3 species were of Annelida. The zoobenthos in the four rivers had a low diversity, with the maximum value of Shannon index being 0. 602. The diversity index of macrobenthos could objectively reflect the environmental quality of river body. In the four rivers, the concentrations of Pb, As, and Zn in Mollusc were 1.15, 0. 32, and 0. 23 times higher than the China' s national standard, respectively, and the concentrations of Cd, Cu, Pb, and Zn in sediments were all beyond the national standard. No correlations were observed between the heavy metals concentrations in Mollusc and sediments. The toxic-response factor (Eir) showed that the potential ecological risk of the heavy metals was in the order of Cd>Pb>Cu>As> Zn>Cr, and the potential ecological risk index showed that the heavy metals pollution of the sediments in the four rivers was moderate.
AB - From October 2007 to October 2008, a monthly investigation was conducted on the community structure of zoobenthos in four urban rivers, including Wuchaogang River, Henggang River, Chaoyang River, and Caoyanghuanbang River, in Shanghai. A total of 20 zoobenthos species were recorded, among which, 14 species were of Mollusc, and 3 species were of Annelida. The zoobenthos in the four rivers had a low diversity, with the maximum value of Shannon index being 0. 602. The diversity index of macrobenthos could objectively reflect the environmental quality of river body. In the four rivers, the concentrations of Pb, As, and Zn in Mollusc were 1.15, 0. 32, and 0. 23 times higher than the China' s national standard, respectively, and the concentrations of Cd, Cu, Pb, and Zn in sediments were all beyond the national standard. No correlations were observed between the heavy metals concentrations in Mollusc and sediments. The toxic-response factor (Eir) showed that the potential ecological risk of the heavy metals was in the order of Cd>Pb>Cu>As> Zn>Cr, and the potential ecological risk index showed that the heavy metals pollution of the sediments in the four rivers was moderate.
KW - Community structure
KW - Ecological risk
KW - Heavy metal
KW - Urban rivers
KW - Zoobenthos
UR - https://www.scopus.com/pages/publications/77958060921
M3 - 文章
AN - SCOPUS:77958060921
SN - 1000-4890
VL - 29
SP - 1985
EP - 1992
JO - Chinese Journal of Ecology
JF - Chinese Journal of Ecology
IS - 10
ER -
