The study was carried out to ascertain benthic macro-invertebrates checklist in the Cross River, Nigeria and using it for bio-indication of the river quality. A total of 186 benthos specimens were collected. The phylum Insecta was most abundant (96) representing 51.61% of total benthos abundance; followed by Oligochaeta 60 (32.25%), Nemertea 10 (5.37%), Hirudiae 8 (4.3%), Cladocera 6 (3.22%), A...

Zooplanktons are microscopic organisms, which are integral components of aquatic food web, as they contribute significantly to productivity of freshwater ecosystems. They are also very sensitive to environmental changes; therefore they make ideal indicator organisms. Total zooplankton (Rotifer, Cladocera, Copepod and Ostracod) abundance was significantly more in Cauvery river with the mean abun...

1. Using a palaeolimnological approach in shallow lakes, we quantified the species richness responses of diatoms and Cladocera to phosphorus enrichment. We also examined differences in species richness responses between littoral and pelagic assemblages of our focal communities. To address both spatial and temporal relationships, our study includes an analysis of both surface sediments from 40 l...

plankton and semi-plankton samples collected from twelve floodplain lakes (beels) of majuli river island of the brahmaputra river basin, upper assam reveal rich cladocera assemblage of 48 species belonging to 32 genera and 7 families. this report assumes biodiversity value as ~65.0% and ~37.0% of the species, and ~78.0% and ~72.0 of genera of the taxon known from assam state of northeast india ...