在喜马拉雅河流中藻群体结构的十年变化
Tanuja Bartwal1, Prakash Nautiyal2
1Aquatic Biodiversity Unit, Department of Zoology, Hemvati Nandan Bahuguna Garhwal University, (A Central University), Srinagar Garhwal, Uttarakhand, India. tanujabartwal24@gmail.com.
Environmental monitoring and assessment
|June 6, 2025
概括
人类活动对喜马拉雅河流造成压力,影响生态系统. 超过30年的原子社区转移表明了退化,强调了长期监测河流健康状况的必要性.
科学领域:
- 生态生态学 生态生态学
- 环境科学 环境科学
- 水生生物学 水生生物学
背景情况:
- 人类居住和旅游业等活动在喜马拉雅冰川养的河流沿线不断增加.
- 这些活动导致人为压力,可能会降低河流生态系统.
- 对喜马拉雅河流生态系统的长期影响尚不清楚.
研究的目的:
- 检查30年来生产者社区结构的长期变化,作为阿拉克南达河生态系统退化指标.
- 评估藻物种丰富度,多样性和社区组成的变化.
主要方法:
- 从1991-92年,2018-19年和2021-22年重新检查历史上的藻 (纳弗拉克斯) 山.
- 对物种丰富性,多样性和占主导地位的种类相对丰富性的分析.
- 藻组合的比较及其随时间的持久性.
主要成果:
- 物种丰富和多样性呈现出增长趋势,但在统计学上并不显著.
- 观察到主导藻物种及其相对丰度的显著变化.
- 三十年来,二原子组合变得不一致,与1991-92年的持久性不同.
结论:
- 观察到的藻群体变化与减少河流排放和增加斯里科特大下方的有机负载有关.
- 原子社区结构是评估喜马拉雅河流健康和生态系统退化的关键生物指标.
- 这项研究确定了长期生态监测和河流健康评估的历史数据的重要性.
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