CSIR - National Institute of Oceanography, Regional Centre, Kochi 682018, India.
CSIR - National Institute of Oceanography, Regional Centre, Kochi 682018, India.
Mar Pollut Bull. 2020 Nov;160:111568. doi: 10.1016/j.marpolbul.2020.111568. Epub 2020 Aug 24.
This study delineates the impact of a man-made hydrological barrage [Thannermukkom barrage (TB)] on the concentration of selected trace metals (Fe, Zn, Cu, Co, Cr, Mn, Ni, Pb) in mesozooplankton from the Kochi backwaters (KBW). The overall results point out that during Pre-Southwest Monsoon (PRM), the concentration of trace metals in mesozooplankton was high in the upstream due to the closure of the barrage, which essentially causes stagnancy of the waters. Trace metal concentrations in the downstream and upstream regions of KBW were found to be lower during Post- Southwest Monsoon (PSWM) compared to the rest of the seasons. In general, trace metals in mesozooplankton from the KBW showed the following order of concentration: Fe > Mn > Zn > Ni > Cu > Cr > Co > Pb. A comparison with earlier data across the globe showed that trace metal concentration in mesoplankton in the KBW is lower than the values reported from other parts of the world.
本研究描述了人为水文水坝[坦嫩穆科姆水坝（TB）]对科钦泻湖（KBW）中型浮游动物中选定痕量金属（Fe、Zn、Cu、Co、Cr、Mn、Ni、Pb）浓度的影响。总体结果表明，在西南季风前（PRM）期间，由于水坝关闭，上游中型浮游动物中的痕量金属浓度较高，这实质上导致了水体的停滞。与其他季节相比，KBW 的下游和上游地区的痕量金属浓度在西南季风后（PSWM）期间较低。一般来说，KBW 中型浮游动物中的痕量金属浓度表现为：Fe > Mn > Zn > Ni > Cu > Cr > Co > Pb。与全球早期数据的比较表明，KBW 中型浮游动物中的痕量金属浓度低于世界其他地区报告的值。
