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Our field experiments showed that the cultivation of pearl mussels formed a new biocoene composed of filamentous algae, protozoa, porifera and coelenterate. It effectively reduced nitrogen, phosphorus,chemical oxygen demand and biochemical oxygen demand in the water by 67.3%, 73.2%, 38.1% and 15.5%,respectively, during May to September 1998 when the water eutrophication was developing. This could control water eutrophication and produce pearls, shellfish meat and shells. This is an economical and effective way to control water eutrophication by using the ultra strong filtering capability of freshwater pearl mussels. 相似文献
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蚌、鱼养殖模式对水体富营养化控制作用的研究 总被引：11，自引：0，他引：11
为了探索控制水体富营养化的新方法．在5～9月长江中下游地区水体富营养的发展期，通过野外规模性试验，即水体吊养珍珠蚌并搭养少量鱼类，然后定期测定4个主要富营养化指标，观察水生生物种群和数量。结果表明，养蚌育珠并搭养适量鱼类可以使20～40cm的水层形成附着丝状藻类、原生动物、腔肠动物、多孔动物和苔藓动物等多种附着生物，使N，P，COD和BOD5含量分别下降67．3％，73．2％，38．1％和15．5％，起到了明显控制富营养化的作用，同时还能收获珍珠、蚌肉和贝壳等产品。比其他控制方法具有更好的实际应用性。 相似文献
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