"Abundance of Pappomonas (WoRMS 115080) [Subcomponent: coccoliths Subgroup: Type 5] per unit volume of the water body by identification and counting by scanning electron microscopy (SEM)"@en . . "SDN:P01::ABD07084" . "Counts of a given biological entity using scanning electron microscopy normalised to a specified volume of fresh or salt water"@en . .