The quantitative benthic samples were collected with a Petersen’s grab of medium size (17.0x16.5 cm) at six sites in each reservoir, at different depths (in the range from 0.5 to 30 m) and different substrate types
The quantitative benthic samples were collected with a Petersen’s grab of medium size (17.0x16.5 cm) at six sites in each reservoir, at different depths (in the range from 0.5 to 30 m) and different substrate types