Relationship of Modern Diatoms with Lake Acidification and Water Quality in Nsonji Lake of Nagaland, North-East India

Journal of Geosciences Research Pub Date : 2023-07-01 DOI:10.56153/g19088-023-0160-40

Zayieno Kere, Samaya S. Humane, Shaik Mohammad Hussain

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Abstract

Understanding the relationship of diatoms and water quality is of paramount importance to link it to Holocene Climate Change. Since diatoms are extremely sensitive to environmental changes, they are the obvious choice to study diatom inferred water quality and climate changes. Therefore, sediment samples along with water samples were collected during pre monsoon seasons from the Nsonji Lake of the Nagaland, India to establish the relationship between the diatom and water quality. The Nsonji Lake has circum-neutral pH (around 7) indicating gradual degradation of organic matter leading to acidification of the lake. The surface sediments of the Nsonji Lake revealed the dominance of Discostella stelligera, Achnanthidium sp., Navicula cryptocephala, Navicula radiosa and Nitzschia palea. These diatom species could be used to unravel the acidification history of lake caused by natural and anthropogenic activities. Understanding the past climate dynamics need modern analogue in order to evaluate the important processes relative to Earth's history and built future scenario. Keywords: Diatoms, Water Quality, Acidification, pH, Organic Matter, Nsonji Lake, Nagaland

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印度东北部那加兰邦Nsonji湖现代硅藻与湖泊酸化和水质的关系

了解硅藻与水质的关系对于将其与全新世气候变化联系起来至关重要。由于硅藻对环境变化极为敏感，因此研究硅藻推断的水质和气候变化是显而易见的选择。因此，在季风前季节从印度那加兰邦的Nsonji湖收集了沉积物样本和水样，以建立硅藻与水质之间的关系。Nsonji湖的pH值为环中性(7左右)，表明有机物逐渐降解导致湖泊酸化。Nsonji湖表层沉积物的优势种为disstella stelligera、Achnanthidium sp.、Navicula cryptocephala、Navicula radiosa和Nitzschia palea。这些硅藻物种可以用来揭示自然和人为活动引起的湖泊酸化历史。了解过去的气候动力学需要现代模拟，以便评估与地球历史和建立未来情景相关的重要过程。关键词:硅藻，水质，酸化，pH，有机物，Nsonji湖，那加兰邦

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Journal of Geosciences Research

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