The most abundant phytoplankton species found
in the King Rama IX Royal Park Reservoir were
Botryococcus braunii, Peridinium sp., Pseudanabaena
sp., Trachelomonas volvocinopsis and
Microcystis aeruginosa, respectively (Figure 2).
Botryococcus braunii, which is regarded as a
potential source of renewable fuel due to its ability
to produce large amounts of hydrocarbon of up to
75% of algal dry mass [18], was found to be most
abundant in all seasons. This data has suggested
some essential information on the sampling of this
phytoplankton, which can be expanded into the
phytoplankton culture for the study of hydrocarbon