Effects of Water Quality on the Distribution of Chinese Giant Salamander (Andrias davidianus) in Guizhou Province,China |
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Authors: | Xue LI Jingcai LV Shize LI Ning XU Gang WEI |
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Institution: | 1. Moutai College, Renhuai 564500, China;2. Basic Medical College, Zunyi medical College, Zunyi 563000, China;3. Biology and Environmental Engineering Col ege, Guiyang University, Guiyang 550000, China |
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Abstract: | 13 water quality parameters were tested from 38 reaches of 34 counties in Guizhou where Chinese giant salamander (Andrias davidianus ) distributed over the past 30 years. Dissolved oxygen and pH were found to be significant determinants of the species distribution in recent years (P<0.05). There was no Chinese giant salamander distribution in the recent five years in rivers with dissolved solids of greater than 415 mg/L, conductivity of greater than 639 us/cm, salinity of greater than 0.31 ppt and total hardness of greater than 150 mg/L. Sensitive to environment, the Chinese giant salamander is an important indicator for environmental quality, so it could be used as one of the environmental indicator. Eutrophication, chemical fertilizer, pesticides and inorganic pollutants may be one of reasons driving wild CGS into extinction. |
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Keywords: | Chinese giant salamander (Andrias davidianus) Guizhou province Water quality factors |
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