Assessing hydrogeochemistry, water quality index (WQI), and seasonal pattern of plankton community in different small and medium reservoirs of Karnataka, India

Phytoplankton Diversity of a Demineralized Urban Wetland of Meghalaya State of Northeast India: The Spatio-temporal Variations and the Role of Abiotic Factors

“…The bimodal spatial phytoplankton quantitative variations noted in NEHU wetland concur with certain Indian reports [11,12,14,60] . The autumn peaks noted at both the regions correspond with the reports from Kashmir [14,53] , Meghalaya [10] , Mizoram [6] and Uttarakhand [21] , and Nepal [67] ; the spring maxima concur with the reports from Bangladesh [63] and West Bengal [65] ; and the lower monsoon abundance concurs [13,27,54,62] but differs from the monsoon peak [40,44,46,48,66] . Amongst the constituent groups, Charophyta depicts quantitative dominance, and Chlorophyta > Bacillariophyta > Dinozoa > Chrysophyta > Cyanobacteria record sub-dominance.…”

“…Sixty-four species (S) known from our net plankton collections reveal notably rich phytoplankton as compared with the reports from Assam [23,24,[42][43][44][45][46][47] , Meghalaya [10][11][12][13] , Mizoram [9] , Sikkim [48] and Tripura [49] states of NEI as well as than various Indian reports elsewhere from Gujarat [50] , Jammu & Kashmir [51,52] , Himachal Pradesh [16][17][18][19] , Karnataka [53] , Kerala [54] , Panjab [55] , Uttarakhand [56][57][58][59][60] and West Bengal [29,61,62] . The authors also document higher richness than the reports from Bangladesh [63,64] , Bhutan [40] and Nepal [65,66] .…”

Nutrient and heavy metal dynamics in the coastal waters of St. Martin’s island in the Bay of Bengal

“…That finally contributed to improving the state of dissolved oxygen [ 72 ]. During cool dry winter, plankton communities proliferate, which may contribute to the above conditions [ 89 , 90 ]. In the case of PC2, the parameters, particularly, TDS (0.884), salinity (0.840), and pH (−0.787) showed significant loading.…”

“…Higher loadings of nitrite, nitrate, and silicates were induced by high salinity that might be caused due to active oceanic processes, primely upwelling, vertical mixing through cyclones, or Ekman pumping [ 75 ]. Phytoplankton activities, particularly elevated photosynthetic activities and predominating influence of neritic water, are those prevailing reasons for reduced levels of nutrient during Pre-monsoon season [ 90 , 91 ]. For PC2, parameter ammonium (0.802), phosphate (0.738), pH (0.644), and DO (0.638) show high positive loadings.…”