Plankton diversity and water quality assessment of three freshwater lakes of Mandi (Himachal Pradesh, India) with special reference to planktonic indicators

Abstract

The present study deals with the limnobiotic status of three selected lakes of Himachal Pradesh using physicochemical and biological parameters (especially phytoplankton and zooplankton) over a period of 2 years. One hundred forty-eight species belonging to nine groups of phytoplankton and 79 species belonging to five groups of zooplankton were identified from the lakes. Trophic level and the pollution status of the lakes were assessed upon the basis of Shannon diversity index (H'), species richness index (S), and physicochemical parameters. Plankton population size was correlated with biotic and abiotic parameters (pH, alkalinity, temperature, dissolved oxygen, transparency, phosphate, chloride, and nitrate). The present investigation revealed that the distribution of plankton species depended upon the physicochemical parameters of the environment. Based on water quality standards given by the Central Pollution Control Board, the water quality was between "A-B" at Prashar wetland, "C-D" at Kuntbhyog Lake, and "D-E" at Rewalsar Lake. The results from the present study indicated that the potential of planktons as bioindicators of trophic status is very high.

Differentiated Responses of Plankton and Zoobenthos to Water Quality Based on Annual and Seasonal Analysis in a Freshwater Lake

“…The biodiversity of phytoplankton in Nansi Lake remained steady in 2014, which indicated that worse water quality had little influence on the biodiversity of phytoplankton in a short time. But in 2015, biodiversity of phytoplankton in Nansi Lake decreased significantly, which may due to the increase in eutrophication [27][28]. Worse water quality resulted in lower zooplankton density of some species, while richness of zooplankton did not change in our study.…”

Struktur Komunitas Dan Distribusi Temporal Gastropoda Di Danau Situ Gintung, Tangerang Selatan, Banten

“…Nilai DO perairan Situ Gintung pada kedua musim memiliki kisaran yang sama dengan penelitian sebelumnya di danau Mandi India pada musim panas hingga musim dingin dengan nilai 3-13 mg.L -1 (Thakur et al, 2013), lebih rendah dari nilai DO di Situ Lembang pada musim kemarau yang mencapai 10 mg.L -1 (Sulastri, 2011). DO perairan Situ Gintung memiliki korelasi positif dengan temperatur dan pH di kedua musim (Table 2).…”

“…Hasil pengukuran TDS di perairan danau Situ Gintung memiliki kisaran yang sama dengan penelitian sebelumnya di danau Mandi India pada musim panas sampai musim dingin dengan nilai 76-296 mg.L -1 (Thakur et al, 2013). TDS di ekosistem perairan dipengaruhi musim, temperatur (Celik & Ongun, 2007), dan pengaruh aktifitas manusia (Thakur et al, 2013).…”

“…TDS di ekosistem perairan dipengaruhi musim, temperatur (Celik & Ongun, 2007), dan pengaruh aktifitas manusia (Thakur et al, 2013). Nilai EC dan BOD5 perairan Situ Gintung memiliki kisaran yang sama dengan penelitian sebelumnya yaitu sekitar 200-500 μS·cm -1 untuk EC (Celik & Ongun, 2007;Thakur et al, 2013;Grabowska et al, 2014), untuk BOD5 setara dengan danau Greek (Kagalaou et al, 2003) dan danau Mandi (Thakur et al, 2013) yaitu sekitar 0-8 mg.L -1 . Nilai EC berkorelasi positif dengan nilai TDS di musim kemarau namun berkorelasi negatif dengan nilai temperatur, DO, dan kecerahan di musim hujan.…”

Dynamics of Micro Algae in Relation to Water Quality Parameters of Pasupatheswarar Temple Pond, Annamalai Nagar, Tamil Nadu

“…The planktonic study is a very useful tool for the assessment of water quality and productivity of any (Pawar et al, 2006). When an aquatic ecosystem is considered, the planktons prove to be of great importance as the changes in the environment can portray an instantaneous response of the planktons (Thakur et al, 2013 andMalik et al, 2013). The plankton growth rate and development depends on various biotic as well as abiotic factors like, light, temperature, available nutrients, hydronamics, predation, oxygen concentration, pH, etc (Dhar et al, 2012).…”