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Wetlands are the most threatened ecosystems of the world. In a country like Bangladesh which is burdened with overpopulation and a constant increasing demand of food production, the wetlands and its aquatic plants are the most vulnerable items in view of the agricultural land accretion processes. But on the other hand protection of wetland ecosystems with its biodiversity must also be ensured for a safe environment. In the backdrop of this, study related to growth, regeneration and autecology of four selected wetland macrophytes, namely, Euryale ferox Salisb., Nelumbo nucifera Gaertn.,...

Five pond stations, seven different physicochemical variables, qualitative and quantitative analysis of phytoplankton and bacterial abundance were studied. Relationship among bacteria, phytoplankton and physicochemical variables was investigated. Results showed that air temperature ranged from 14 to 33.5C, water temperature 19 to 31.5C, pH 6.59 to 8.95, dissolved oxygen 2.2 mg/l to 9.55 mg/l, conductivity 129.3 to 275 S/cm, total dissolved solids 73.3 to 121 mg/l, alkalinity of water 1.33 to 2 meq/l, total phytoplankton count 6.7104 to 744.5104/l and bacterial count 5.93101 to 1.50105 cfu/l....