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首页> 外文期刊>International Journal of Marine Science >Interrelationship Between Planktonic Diatoms and Selected Governing Physicochemical Parameters of the Hooghly Estuary, Bay of Bengal
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Interrelationship Between Planktonic Diatoms and Selected Governing Physicochemical Parameters of the Hooghly Estuary, Bay of Bengal

机译：孟加拉湾胡格里河口浮游硅藻与选定的主要理化参数之间的相互关系

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摘要

The estuarine ecosystem is generally dynamic and mostly sets the stage for the interplay between phytoplankton such as diatom and the water quality parameters. The study was performed at selected sites of Hooghly estuary to monitor the effect of chosen physicochemical parameters (pH, salinity, dissolved oxygen, nutrients etc.) in relation to seasonal fluctuations in the diatom communities (Chl a and population density). The study encompassed a period of two years (Nov’12 to Oct’14). Seasonal variations in the Redfield ratio (N: P) during the tenure of the study ranged from 5.52 during premonsoon to 14.43 during monsoon. Low salinity and high inorganic compounds (NO3, PO4 and SiO4) levels in the coastal water could have contributed to the predominance of diatoms over dinoflagellates, as observed during the study. The study also reflected the fact that in the mangrove dominated estuarine ecosystems, diatom species like Skeletonema sp., Thalassionema spp., Synedra sp. etc possess potentials to be used as bioindicators to nutrient enriched ecosystem and therefore, can serve as ecological tools to monitor water quality.
机译：河口生态系统通常是动态的，并且大部分为浮游植物（如硅藻）与水质参数之间的相互作用奠定了基础。该研究是在Hooghly河口的选定地点进行的，目的是监测所选理化参数（pH，盐度，溶解氧，养分等）对硅藻群落季节性波动（Chl a和种群密度）的影响。这项研究为期两年（11月12日至14年10月）。研究期间，雷德菲尔德比（N：P）的季节性变化范围从季风前的5.52到季风期的14.43。沿海水域的低盐度和高无机化合物（NO 3 ，PO 4 和SiO 4 ）水平可能是导致硅藻占主导地位的原因。在研究过程中观察到超过鞭毛鞭毛虫。该研究还反映了这样一个事实，即在红树林为主的河口生态系统中，硅藻物种如Skeletonema sp。，Thalasionema spp。，Synedra sp.。等具有潜在的生物指示剂，以丰富营养的生态系统，因此，可以作为监测水质的生态工具。

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