The present study reveals the correlation of zooplankton productivity of lotic and lentic water ecosystem. The biological rhythms are useful tool to determine the zooplankton production. Planktons enrich the trophic level of lentic and lotic ecosystems. The relationship of primary productivity of any aquatic ecosystem depends on the biological biodiversity. Estimation of zooloplankton productivity of any water system helps to analyse its richness of species as biological population which are sustainable in it by the adequate amount physicochemical parameters. It is observed in most of the water system the quality of physical, chemical and biological phenomena are depends directly or indirectly correlation to establish diverse life as suitable habitat. To identify the current problems on lentic and lotic water system correlation studies will be more helpful, it is need of hour to give more attention on limnology because most of the biodiversity polluted due to industrialisation and anthropology. To develop advanced monitoring tools to address it on time to time problems of water system as key indicators and to conservation strategies towards the sustainable developments.

Current study reveals that, heavy metals statusof agriculture soils of Sandurtalluk, Ballari district, Karnataka, India. Composite soil samples were collected about 100 m² apart at 0–30 cm (top soil) and 50–60 cm (subsoil) depths from study area during the dry season in January, 2016. The soils were analyzed for pH and total concentration of heavy metals such as Cd, Cr, Cu, Fe, Mn, & Zn by using Atomic Absorption Spectrometer (AAS) Technique. Results show that total mean concentrations of the heavy metals decreased with depth. Whereas, the mean concentrations of the metals in the top and sub soil of Sandur mine increased respectively in the order, Fe > Zn> Cu> Mn > Cd > Cr.