Phytosociology of Freshwater Macrophytes Found in Morang District, Eastern Nepal

In total, 38 species of aquatic macrophytes were collected from lentic (Betana pond and Bhattapokhari) and lotic (Singhia river) freshwater bodies of Morang district, eastern Nepal during January-December, 2009. Macrophytes of Singhia river had 20.5% similarity with Betana pond, and 21% with Bhattapokhari. However, Betana pond and Bhattapokhari had no species'similarity. Growth form categories were in the order: hyperhydates(29%) > tenagophytes(26%) > helophytes = vittates (18.5%) > pleustophytes(8%). Blyxa japonica dominated Betana pond with biomass range between 89.2 and 89.2–135 g/m² and IVI range between 52 and 99.2; Eichhornia crassipes dominated Bhattapokhari with biomass range between 650.7 and 1120.5 g/m² and IVI range between 95.5 and 192.8; and Panicum psilopodium dominated the shallow water zone in the Singhia river with biomass range between 30.1 and 42 g/m² and IVI range between 42.8 and 55.7.