"Abundance of Bacillariophyceae (ITIS: 2287: WoRMS 148899) [Morphology: pennate Subgroup: sp. 5] per unit volume of the water body by optical microscopy"@en . . "SDN:P01::ABA08982" . "Number of individuals from the specified biological entity identified and counted using optical microscopy and normalised to a unit volume of water sample."@en . .