Study on Algal Diversity and Physico-Chemical Parameters in Two Streams of Rohru Region in Shimla District, Himachal Pradesh, India

Nitesh Kumar, Suhani Gianta, Manju Sharma, Usha Devi, Arvind Kumar, Vishal Rana, Rajeev Bhoria, Anita Kumari and Pratibha
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Nitesh Kumar: Department of Biosciences, Himachal Pradesh University, Summer Hill, Shimla - 171005, India
Suhani Gianta: Department of Biosciences, Himachal Pradesh University, Summer Hill, Shimla - 171005, India
Manju Sharma: Department of Botany, Gautam College, Hamirpur, Himachal Pradesh, India
Usha Devi: Research officer Botany (Scientist level-ll) CCRUM, New delhi Ministry of Ayush. Govt of India.
Arvind Kumar: Department of Botany, T.J.C.M., Government Degree College, Sujanpur Tihra, Hamirpur, Himachal Pradesh-176110, India
Vishal Rana: Department of Chemistry, Thakur P.G. College of Education, Dhaliara, Kangra, Himachal Pradesh - 177103, India
Rajeev Bhoria: Department of Botany, S.C.V.B. Govt. Degree College, Palampur, Distt. Kangra, Himachal Pradesh-176061, India
Anita Kumari: Department of Botany, G.B. Pant Memorial Govt. College, Rampur Bushar, Himachal Pradesh, India.
Pratibha: Department of Biosciences, Himachal Pradesh University, Summer Hill, Shimla - 171005, India

International Journal of Latest Technology in Engineering, Management & Applied Science, 2025, vol. 14, issue 7, 588-593

Abstract: The present study investigates the algal diversity and physico-chemical parameters in Shikdi Stream and Dogda Stream in the Rohru region of Shimla District, Himachal Pradesh, India. Algal samples were collected during three seasons: post-monsoon, winter, and spring, and a total of 21 algal genera were identified across Bacillariophyceae, Chlorophyceae, and Cyanophyceae. Bacillariophyceae exhibited the highest seasonal stability, indicating broad ecological tolerance, whereas Chlorophyceae and Cyanophyceae displayed notable seasonal variability. Physico-chemical analyses revealed seasonal patterns: water temperature dropped in winter and peaked in spring; pH remained slightly alkaline throughout; and both total dissolved solids (TDS) and electrical conductivity (EC) were highest post-monsoon and decreased in spring, particularly in Dogda stream. Shikdi stream consistently recorded higher TDS, EC, hardness, and alkalinity, suggesting greater mineral input, possibly due to geological or anthropogenic factors. The correlation between environmental parameters and algal distribution underscores the influence of temperature, nutrient availability, and water chemistry on stream algal communities. These findings enhance the understanding of freshwater algal ecology and may inform stream monitoring, conservation, and watershed management strategies in the region.

Date: 2025
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