2.2 Light microscopy and morphological
descriptions
Light microscopy was performed on the
Lugol’s preserved samples from all reservoirs using
a Motic BA300 compound microscope with a digital
camera. Motic Image Plus 2.0 software was used for
image analyses. The morphological identifi cation of
toxic cyanobacteria was done according to Komárek and
Anagnostidis (18). The cell numbers of the dominant
genera of toxic cyanobacteria were count from Lugol
fi xed samples using a haemacytometer under the light
microscope. Cyanobacterial biovolumes were calculated
from cell numbers and cell size measurements.