Biomonitoring of Four Contrasting Wetlands of Kolkata, West Bengal Based on Zooplankton Ecodynamics and Biotic Indices

Abstract

East Kolkata Wetland (EKW) has been assigned the status of Ramsar Site because of its vastness as well as self purification capabilities which have been utilized by local people for the massive agricultural and aquaculture production for more than one century. In this context, an attempt has been made in the present paper to evaluate the existing environmental health of four selected contrasting wetlands of this eco-zone of global importance by qualitative and quantitative hydrobiological studies. Two of the selected wetlands (study site-III and study site-IV) used to receive water from raw sewage after undergoing phytoremediation process. The study site-II has been selected with a view to evaluate the pollution stress on the structural components of this wetland ecosystem as it receives waste water because of anthropogenic activities, and the study site-I is away from any pollution impact as it is located in a well managed natural park. Quantification of the variabilities of different biotic components caused by water pollution has been assessed by recording binary distribution patterns of zooplankton and similarity indices. Besides, new Biotic Indices (Species Pollution Value-SPV and Community Pollution Value-CPV) have been developed using data on the distributional patterns of zooplankton in order to assess the degree of pollution of the studied wetlands. Seasonal water quality data along with qualitative and quantitative information of biological parameters have also been taken into consideration to highlight the impact of phytoremediation on wetland ecosystem dynamics on one hand and pollution stress on the structural and functional components of the water body on the other hand.

The Influence of Human Interference on Zooplankton and Fungal Diversity in Poyang Lake Watershed in China

“…The low diversity index showed heavy pollution in ZLH, SXH, and QH. Natural lakes have a self-purification system and healthy zooplankton structure that polluted lakes lack, due to frequent water fluctuation (good fluidity) [36,37]. The high total biomass and density of zooplankton in DHC and SH may be explained by the strict protection of the waters by local governments and good natural fluidity (DHC and SH connect to the main lake when the water level reaches 17.3 m and NH connects to the main lake at a higher water level).…”

Removal of heavy metals from wastewater by natural growing plants on River Nile banks in Egypt

“…Constructed wetlands (CWs) are designed and constructed to simulate the biological, chemical, and physical processes that happen in natural wetlands (Zhang et al 2014). Wetlands are one of the most productive life support systems in the world and they are very important to mankind in socio-economic and ecological fields (Sanyal et al 2015). Wetlands with macrophytes are natural systems that can be used for the treatment of domestic wastewater.…”

Phytoplankton nutrient dynamics and flow cytometry based population study of a eutrophic wetland habitat in eastern India, a Ramsar site

“…31,34 It was noted that the environmental variables recorded at Captain Bhery nearly covered the value ranges of corresponding parameters obtained at other different EKW sites. [50][51][52] The Captain Bhery was thus considered to be sufficiently stable and dynamic to be a representative water body for the EKW, and the complex interplay of the different hydrological factors and their impact on the phytoplankton population observed at this site could be extended for majority of the EKW. Here the phytoplankton biomass was found to uctuate seasonally and appeared to be highly inuenced by the nutrient regime as well as environmental conditions.…”