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Phytoplankton productivity in Lake Lugano before water treatment   总被引:3,自引:0,他引:3  
A study of phytoplankton primary productivity was carried out on Lake Lugano before the installation of sewage treatment plants. Average day rates of 1.9 g C·m2 and annual production of 690 g C·m2 were estimated. Primary productivity was also evaluated by calculations based upon Secchi disc and light data. The results show the high cultural eutrophication state of this lake.  相似文献   
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