生态学杂志2012，Vol.31Issue(11)：2966-2975,10.
利用环棱螺调控池塘水质的实验生态学研究
Environmental biology of Bellamya sp. in regulating pond water quality
摘要
Abstract
Three micro-scale controlled experiments were established to examine the ecological function of Bellamya sp. and their affecting mechanisms upon water. Due to the N and P release through the Bellamya sp. metabolism under controlled conditions, the concentrations of different N and P forms in water were obviously increased. After 430 hours incubation, the concentrations of dissolved total nitrogen (DTN) and dissolved total phosphorus (DTP) in water were increased by 0.73-2. 56 times and 1. 85-3.41 times, respectively. Under the high nutrient concentrations, the N and P release by Bellamya sp. was inhibited. Meanwhile, Bellamya sp. showed a positive effect on the short-term deposition of suspended particulate matter ( POM) , which was related to the constituents and concentrations of POM. The sedimentation rates in both kaolin-and eutrophic water with high initial turbidity showed significant positive relationship with snail density. Furthermore, Bellamya sp. greatly reduced the chlorophyll-a concentration in water in a short period, and the removal rate was positively correlated with snail density. However, the chlorophyll-a concentration was increased rapidly with increasing incubation time. The feeding activities of Bellamya sp. and the consequent nutrient release stimulated the chlorophyta instead of cyanobacteria as the dominant species.关键词
环棱螺/水质调控/环境效应Key words
Bellamya sp. / water quality control/ environmental effect分类
农业科技引用本文复制引用
周露洪,谷孝鸿,曾庆飞,毛志刚,高华梅,孙明波..利用环棱螺调控池塘水质的实验生态学研究[J].生态学杂志,2012,31(11):2966-2975,10.基金项目
江苏省自然科学基金重点项目(BK2010096)、环保部环保公益项目科研专项(2010467014)、江苏省水产三项工程项目(PJ2011-55)和中国科学院院地合作项目(Y1YD11031)资助. （BK2010096）
