Sekh Sanoyaz, Biswas Biswajit, Mandal Manjushree, Sarkar Neera Sen
Phycology Section, Department of Botany, University of Kalyani, Kalyani, Nadia, West Bengal 741235 India.
Springerplus. 2016 May 12;5:611. doi: 10.1186/s40064-016-2195-4. eCollection 2016.
The study highlights the dynamics and morphological characteristics of the Genus Planktoniella Schutt. The two available species P. sol (Wallich) Schutt. and P. blanda (Schmidt) Syvertsen and Hasle are important components of the phytoplankton assemblage in the estuarine system of Indian Sundarbans and also marine systems elsewhere. The sampling sites for the purpose of this study include four different spots along a riverine stretch in the estuarine region adjacent to the Tiger Reserve in the Indian Sundarbans flowing into the Bay of Bengal. Integrated phytoplankton samples were preserved for the purpose from composite water samples from each site. The water samples were analysed in field for determining pH, temperature, salinity, conductivity, TDS, turbidity and DO and subsequent to treatment and processing, the samples were microscopically analysed in the laboratory. Significant negative correlation of cell count of both species found with respect to temperature and turbidity. P. sol versus temperature (significant at α = 0.01, p = 0.001) and P. blanda versus temperature (significant at α = 0.05, p = 0.037); P. sol versus turbidity (at α = 0.05, p = 0.019) and P. blanda versus turbidity (at α = 0.05, p = 0.019). Significant positive correlation found with respect to DO and as correlation between the two species themselves. A model has been generated for each of the two species with temperature, turbidity and DO as predictor variables and the two species of Planktoniella as response variables. The influence of other dominant phytoplankton in the samples has also been considered with Pearson correlation computed for each set of species.
该研究突出了浮游皮氏藻属（Planktoniella Schutt）的动态变化和形态特征。现有的两个物种，即索尔浮游皮氏藻（P. sol (Wallich) Schutt.）和温和浮游皮氏藻（P. blanda (Schmidt) Syvertsen and Hasle），是印度孙德尔本斯河口系统以及其他地方海洋系统中浮游植物群落的重要组成部分。本研究的采样地点包括印度孙德尔本斯老虎保护区附近流入孟加拉湾的河口区域一条河流段上的四个不同地点。为进行研究，从每个地点的混合水样中保存了综合浮游植物样本。在野外对水样进行分析以测定pH值、温度、盐度、电导率、总溶解固体、浊度和溶解氧，经过处理和加工后，在实验室对样本进行显微镜分析。发现这两个物种的细胞数量与温度和浊度均呈显著负相关。索尔浮游皮氏藻与温度（在α = 0.01时显著，p = 0.001）以及温和浮游皮氏藻与温度（在α = 0.05时显著，p = 0.037）；索尔浮游皮氏藻与浊度（在α = 0.05时，p = 0.019）以及温和浮游皮氏藻与浊度（在α = 0.05时，p = 0.019）。发现与溶解氧以及两个物种之间的相关性呈显著正相关。以温度、浊度和溶解氧作为预测变量，以两种浮游皮氏藻作为响应变量，为每个物种生成了一个模型。还考虑了样本中其他优势浮游植物的影响，并针对每组物种计算了皮尔逊相关性。
