Assessment of fish habitat suitability in the wake of elevated pollution of a tropical river in India

IF 5.8 3区 环境科学与生态学 0 ENVIRONMENTAL SCIENCES
Md. Mofizul Hoque, Aznarul Islam, Subodh Chandra Pal, Biplab Sarkar, Zakir Md Hossain
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Abstract

Evaluating fish habitat suitability (FHS) is of utmost importance in the present times, as rising pollution and ecological stress have led to the deterioration of their habitat and population. The present study has evaluated ecological water quality using the comprehensive pollution index (CPI), eutrophication index (EI), and organic pollution index (OPI). Fish community structure has been assessed based on tropic level score (TLC) and habitat orientation score (HOS). Moreover, FHS has been evaluated using the habitat suitability index (HSI). These assessments have been conducted in the spatio-temporal dimension. This study demonstrates that the ecological water quality is significantly poorer during the monsoon (MON) season, according to the CPI. However, it was at its lowest during the pre-monson (PRM) season in 2014–2015 and the post-monson (POM) season in 2022–2023, as indicated by the OPI and EI. The water is significantly polluted downstream of the Durgapur barrage, particularly after the Tamla Nallah confluence. According to the CPI, 72.73% of water samples during the MON season were highly contaminated in 2014–2015 and in 2022–2023. Practically water was badly polluted in all seasons according to the OPI and EI. The fish community composition indicates that the river is currently in a precarious state, and the ecosystems inside the river have undergone alterations in certain areas. According to the HSI, the Damodar River exhibits diminishing appropriateness for fish habitat during PRM season in certain areas, while other seasons show no suitability for fish habitat. This investigation will be highly beneficial for mitigating pollution and restoring rivers. It is crucial to uphold and conserve freshwater biodiversity and the ecosystem services provided by the river.

印度一条热带河流污染加剧后鱼类生境适宜性评估。
随着污染和生态压力的加剧,鱼类的栖息地和种群数量不断减少,鱼类生境适宜性评价在当今时代具有极其重要的意义。采用综合污染指数(CPI)、富营养化指数(EI)和有机污染指数(OPI)对生态水质进行评价。基于热带水平评分(TLC)和生境取向评分(HOS)对鱼类群落结构进行了评价。此外,利用生境适宜性指数(HSI)对FHS进行了评价。这些评估是在时空维度上进行的。根据CPI,这项研究表明,在季风季节,生态水质明显较差。OPI和EI显示,2014-2015年季前(PRM)季和2022-2023年季后(POM)季为最低。杜尔加布尔拦河坝下游的水受到严重污染,特别是在Tamla Nallah汇合处之后。根据CPI数据,2014-2015年和2022-2023年雨季的高污染水样占72.73%。根据OPI和EI,实际上水在所有季节都受到严重污染。鱼类群落组成表明河流目前处于不稳定状态,河流内的生态系统在某些地区发生了变化。根据HSI,达摩达尔河在某些地区的PRM季节显示出鱼类栖息地的适宜性下降,而其他季节则显示出鱼类栖息地的不适宜性。这一调查将对缓解污染和恢复河流非常有益。维护和保护淡水生物多样性和河流提供的生态系统服务至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
8.70
自引率
17.20%
发文量
6549
审稿时长
3.8 months
期刊介绍: Environmental Science and Pollution Research (ESPR) serves the international community in all areas of Environmental Science and related subjects with emphasis on chemical compounds. This includes: - Terrestrial Biology and Ecology - Aquatic Biology and Ecology - Atmospheric Chemistry - Environmental Microbiology/Biobased Energy Sources - Phytoremediation and Ecosystem Restoration - Environmental Analyses and Monitoring - Assessment of Risks and Interactions of Pollutants in the Environment - Conservation Biology and Sustainable Agriculture - Impact of Chemicals/Pollutants on Human and Animal Health It reports from a broad interdisciplinary outlook.
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