This study investigates the diversity and seasonal variation of algal species in Sangitarai Pond and Kodatari Pond, located in Raigarh Block, Chhattisgarh, India, from April 2023 to January 2024. The assessment of algal diversity was carried out using the Shannon-Wiener Index (H') and Simpson’s Diversity Index (D). The results revealed that both ponds exhibited high algal diversity, with Shannon-Wiener Index values of 2.251 for Sangitarai Pond and 2.253 for Kodatari Pond. The Simpson’s Diversity Index values were 0.889 and 0.890 for Sangitarai Pond and Kodatari Pond, respectively, indicating a balanced distribution of algal species in both ponds. Seasonal variations in algal density were evident, with higher densities recorded during the summer and monsoon seasons due to favourable conditions such as higher temperatures, increased sunlight, and nutrient influx from runoff. Algal density declined during the winter season, likely due to cooler temperatures and reduced nutrient availability. The findings highlight the need for effective management strategies to control algal blooms, especially during the monsoon season when nutrient loading is at its peak. Understanding the diversity and temporal trends of algal communities can contribute to better conservation and management of these aquatic ecosystems.
Algal blooms, Diversity indices, Seasonal variation, Aquatic ecosystems.
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