**9. Conclusion**

The zooplankton's role in lentic and lotic water system to improve the water quality, act as basal organism in food chain and maintain the environmental conditions.

### *Zooplankton Productivity Evaluation of Lentic and Lotic Ecosystem DOI: http://dx.doi.org/10.5772/intechopen.107020*

The existence and richness of zooplanktons relationship associated with water quality in both the water system. Zooplankton communities such as cladocerans, copepods, rotifers, etc., are held responsible to set biological parameters due to their central role in aquatic habitat in food webs along with the phytoplankton's (primary producers) and reach to higher level trophic system and to become important in energy flow and in nutrient cycle of aquatic systems. The many research study showed the correlation between dominant species along with the measured environmental parameters, whereas many tools, methods and protocols like cluster analysis, population metrics, limnology, etc., will help us to know the lentic and lotic water assemblages of zooplankton. This chapter emphasised that zooplankton community establish the structure of water system, environmental conditions and reflects the health of lentic and lotic ecosystem, hence they play significant role in biomonitoring, biodegrading and bioremedial of any water ecosystem health.
