Phytoplankton Diversity of a Subtropical Reservoir of Meghalaya State of Northeast India

The littoral and limnetic phytoplankton of ‘soft de-mineralized water’ in the Nongmahir reservoir Meghalaya state northeast India (NEI) reveal a fairly diverse assemblage total 52 species, depict higher richness Chlorophyta desmids, record speciose constellation 51 species per sample. Phytoplankton form dominant quantitative component net plankton indicate differential spatial dominance important groups. Bacillariophyta > region records region. Staurastrum spp. Cosmarium are two regions. Seventeen ‘specialist’ collectively contribute to abundance (87.9±6.9%) (91.6±3.3%) regions rest ‘generalist’ nature. moderate diversity variations evenness. monthly composition, richness, similarities, abundance, indices influence individual abiotic factors hypothesised differences habitat heterogeneity amongst CCA registers 78.36 78.95% cumulative 10 on assemblages, respectively. Our results highlight distinct temporal parameters comparison with preliminary survey June 1995–May 1996. This study is an contribution reservoirs subtropical particular.