Abstract
Abstract This research work was carried out from July 2018 to June 2019. WQI method was utilized to examine the seasonal changes in water quality that can indicate the potential use of water in the future. Water samples were tested from three locations along the Mandakini River. Fourteen physical and chemical parameters were analyzed. All water quality parameters were inside the admissible furthest reaches of the WHO for drinking water except turbidity, especially in the monsoon season. Twelve taxa of macroinvertebrates (Philopotamus sp., Laptophlebia sp., Isoperla sp., Diploperla sp., Tabanus sp., Hydropsyche sp., Baetis sp., Glossosoma sp., Heptagenia sp., Ephemerella sp., Psephenus sp., and Protandrous sp.) were identified in the Mandakini River. The fundamental goal of this investigation was to evaluate the seasonal effects on benthic macroinvertebrate diversity from the physicochemical variables of the Mandakini River. The study also affirmed that tourist-generated waste disposal and poisonous and dangerous chemicals from farming are the key components liable for the deterioration of water quality during the monsoon season.
Highlights
The Like-Minded Megadiversity Countries are the richest sources of biodiversity (Kumar & Sharma )
The current study provides the baseline information about the macroinvertebrate diversity and nature of water of the Mandakini River to scientists working in comparable fields
The seasonal effect on benthic macroinvertebrates was highest in the monsoon season, which adversely affects the frequency and variety of these organisms
Summary
The Like-Minded Megadiversity Countries are the richest sources of biodiversity (Kumar & Sharma ). India is one among the 18 megadiversity nations (Behera et al ). Freshwater biodiversity is an essential feature for the proper functioning of the fluvial system and to ensure its resistance and resilience against natural and anthropogenic stressors (Bellard et al ). A riverine biological system is a necessary and significant segment of the freshwater environment, wherein the mountain fluvial environment is uncommon just as explicit in all conditions. The density and influence of biological factors in freshwater ecosystems differ significantly from non-biological factors. Every species has its explicit boundaries of physiology, biochemistry, and genetics with the effective divergence of physicochemical attributes of an ecosystem in due course of time (Wetzel & Likens )
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