3.3. Assessment of biological diversity index
Results
of Shannon-Wiener
Diversity index H, Margalef richness index d
and Pielou evenness index J are shown in Fig 4.
It can be seen that trends
of all average indexes in all sampling sites
are generally the same,
both in low and rainy season.
Diversity index H
and richness index d of rainy season
are both higher than those of dry season,
while evenness index J of dry season is high than that of rainy season.