Effect of physico-chemical conditions on the structure and composition of the phytoplankton community in Wular Lake at Lankrishipora, Kashmir

Abstract

The high altitude valley of Kashmir abounds in a vast array of freshwater bodies of lotic as well as lentic nature. Amongst these, lakes play an important role in biodiversity of this region. The present study on Wular Lake, Kashmir was undertaken from March, 2007 to February, 2008 to study abundance and distribution of phytoplankton and their correlation with physico-chemical conditions of water. A total of 64 phytoplankton belonging to bacillariophyceae, chlorophyceae, cyanophyceae and euglenophyceae were identified. Phytoplankton in general, showed two growth periods, one in spring and other in winter. A clear dominance of bacillariophyceae over chlorophyceae, cyanophyceae and euglenophyceae was observed throughout the study period. Navicula spp. with population density of 118 no./ml was recorded to be the most abundant species amongst bacillariophyceae at the selected site. Chlorophyceae formed the second most dominant group of phytoplankton with Chlorella spp. (112 no./ml) as the most abundant species. Osillatoria spp. with population density of 119 no./ml was found to be the most abundant amongst cyanophyceae. Euglenophyceae formed the least represented group of phytoplankton with peak population in spring. Statistically, bacillariophyceae and euglenophyceae showed significant negative correlation (r = -0.855 and r = -0.177) with water temperature, while cyanophyceae showed significant positive correlation (r = 0.745). Chlorophyceae showed nonsignificant positive correlation (r = 0.325) with water temperature at the selected site. Shannon-Wiener diversity index (H′) value (1.672) was recorded for cyanophyceae, while the highest evenness (J′) value (0.8872) was recorded for euglenophyceae. The value of Berger-Parker index of dominance (0.1859) was highest for bacillariophyceae. Canonical correspondance analysis (CCA) was also carried out to analyze the relationship between the physico-chemical parameters and the phytoplankton. It showed that the most important factors affecting phytoplankton distribution are water temperature, CO 2 , chloride, transparency, TDS, alkalinity and dissolved oxygen.

Effects of physico-chemical parameters on the composition and abundance of phytoplankton in Ajiwa Reservoir Katsina State, north western Nigeria

“…In the present study, Microcystis was also recorded in the selected site table 2. The occurrence of Oscillatoria in the present study indicates pollutants of biological origin which agreed with the observations of Altaf and Saltanat (2014) and Gadag et al (2005).…”

Seasonal Variation of Microalgae Diversity in Lake Abaya, Ethiopia

“…This study agreed with reports of diatom diversity and distribution in shallow lakes of Wapusk National Park (Manitoba, Canada) it shows that the most abundant taxa of the above lake are Nitzschia which is not common in other Eco zones by Jacques O, et al [26]. Therefore, the current findings are similar with that of Altaf H, et al & Ganai AH, et al [25,27]. In the second study period the Bacillariophyta, Cyanophyta, Chlorophyta and Euglinophyta were dominant identified genera in Lake Abaya Siltie Zone.…”

“…From phylum Bacillariophyta /diatom group is second dominant phylum during the first study period and among the identified genera of Bacillariophyta highly dominant genera were Nitzschia and Melisora respectively 67.17 % and 29.57%. As investigate that Bacillariophyta remained dominant in the lake during winter because of they are able to grow under the condition of weak light and low temperature which are less suitable for other algae and low concentration of nutrients (NO3-N AND PO4-P) in the winter [25]. This study agreed with reports of diatom diversity and distribution in shallow lakes of Wapusk National Park (Manitoba, Canada) it shows that the most abundant taxa of the above lake are Nitzschia which is not common in other Eco zones by Jacques O, et al [26].…”

Phytoplankton Diversity of a Subtropical Reservoir of Meghalaya State of Northeast India

“…A sizeable fraction of the published works with incomplete species inventories and inadequate data-analysis comprise 'routine' ecology reports (Sharma, 2015). The noteworthy phytoplankton diversity Indian studies relate to the lakes of Kashmir (Zutshi et al, 1980;Zutshi and Wanganeo, 1984;Wanganeo and Wanganeo, 1991;Baba and Pandit, 2014;Ganai and Parveen, 2014), Himachal Pradesh (Thakur et al, 2013;Gupta et al, 2018;Jindal et al, 2013Jindal et al, , 2014aJindal et al, , 2014b and Uttarakhand (Sharma and Singh, 2018;Sharma and Tiwari, 2018;Singh and Sharma, 2018). Certain notable works from NEI are from the floodplain lakes (beels) of the Brahmaputra river basin of Assam (Sharma, 2004(Sharma, , 2012(Sharma, , 2015Sharma and Hatimuria, 2017) and pats of the floodplains of Manipur (Sharma, 2009(Sharma, , 2010.…”