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<p>This study investigates the microbial community composition and diversity across three ecosystems within Kaziranga National Park (KNP) in Northeast India. It focuses on seasonal variations (pre-monsoon, monsoon, and post-monsoon) and examines the relationships between microbial communities, soil parameters, and ecosystem dynamics to better understand their implications for ecosystem resilience and sustainability amidst climate change. High-throughput sequencing and statistical analyses were employed to assess the relative abundance of bacterial phyla. Diversity metrics such as Shannon and Chao1 indices were used to evaluate variations in bacterial diversity across ecosystems and seasons. Principal component analysis was conducted to explore correlations between bacterial phyla and soil properties, including soil organic carbon (SOC). Proteobacteria, Acidobacteria, Actinobacteria, and Chloroflexi appeared as the dominating phylum across the three ecosystems. While Proteobacteria remained consistent, Actinobacteria exhibited a notable increase during the post-monsoon season. Grassland ecosystems exhibited higher bacterial diversity across all seasons. Principal component analysis revealed correlations between soil properties and specific bacterial phyla. A positive correlation was observed between oligotrophic Chloroflexi and SOC levels, contradicting expectations based on their life strategies. Our findings underscore the intricate relationship between microbial communities and environmental factors, providing insights crucial for understanding ecosystem functioning and their implications for ecosystem resilience and sustainability in the face of ongoing climate change. However, further research should extend into investigating microhabitat variability, climate change impacts, and microbial interactions which will provide critical insights into soil health and ecosystem services. This will further enhance our knowledge, guiding effective conservation strategies for ecosystem resilience in this unique and vital region.</p>

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Evaluating Bacterial Diversity in Three Natural Ecosystems of a Semi-Evergreen Forest of Northeast India Through High-Throughput Sequencing

  • 期刊论文

  • 发表日期：

    2025年10月23日

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  • Palakshi Borah,
  • Nirmali Gogoi,
  • Sanjeev P. Mahanta,
  • Nandita Baruah

摘要

This study investigates the microbial community composition and diversity across three ecosystems within Kaziranga National Park (KNP) in Northeast India. It focuses on seasonal variations (pre-monsoon, monsoon, and post-monsoon) and examines the relationships between microbial communities, soil parameters, and ecosystem dynamics to better understand their implications for ecosystem resilience and sustainability amidst climate change. High-throughput sequencing and statistical analyses were employed to assess the relative abundance of bacterial phyla. Diversity metrics such as Shannon and Chao1 indices were used to evaluate variations in bacterial diversity across ecosystems and seasons. Principal component analysis was conducted to explore correlations between bacterial phyla and soil properties, including soil organic carbon (SOC). Proteobacteria, Acidobacteria, Actinobacteria, and Chloroflexi appeared as the dominating phylum across the three ecosystems. While Proteobacteria remained consistent, Actinobacteria exhibited a notable increase during the post-monsoon season. Grassland ecosystems exhibited higher bacterial diversity across all seasons. Principal component analysis revealed correlations between soil properties and specific bacterial phyla. A positive correlation was observed between oligotrophic Chloroflexi and SOC levels, contradicting expectations based on their life strategies. Our findings underscore the intricate relationship between microbial communities and environmental factors, providing insights crucial for understanding ecosystem functioning and their implications for ecosystem resilience and sustainability in the face of ongoing climate change. However, further research should extend into investigating microhabitat variability, climate change impacts, and microbial interactions which will provide critical insights into soil health and ecosystem services. This will further enhance our knowledge, guiding effective conservation strategies for ecosystem resilience in this unique and vital region.