热带河口的盆地功能响应模式在不同规模的人为干扰下
Soniya Sukumaran1, Jyoti Mulik2, S Neetu3
1CSIR-National Institute of Oceanography, Regional Centre Andheri (W), Mumbai 400 053, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
Marine pollution bulletin
|February 21, 2025
概括
人类活动影响热带河口,影响盆地生态系统. 这项研究确定了揭示压力水平的关键特征和环境因素,有助于可持续管理.
科学领域:
- 海洋生态海洋生态学
- 河口生态学 河口生态学
- 环境科学 环境科学
背景情况:
- 热带河口面临着严重的人类压力,影响着盆地功能,对这些影响的理解有限.
- 宏观 Benthic 社区对于河口健康至关重要,但它们在热带系统中对压力的功能反应还未得到充分研究.
研究的目的:
- 研究三条热带河口的宏观植物功能模式,对人类的影响有所不同.
- 确定特定的特征 (养行为,沉积物位置,寿命,生态敏感性) 如何表明压力.
- 将分类学和功能结构联系起来,并确定影响盆地运作的关键环境因素.
主要方法:
- 在三个受差异影响的热带河口中检查了宏观的功能模式.
- 利用分类学和功能指数,包括罗的二次 (RaoQ).
- 应用RLQ和第四角分析,将特征与环境因素和污染水平相关联.
主要成果:
- 分类学和功能指数正相关,表明对物种丧失和功能转变的脆弱性.
- 特定的特征有效地标志着受压力的区域,其中抗性模式占主导地位.
- RaoQ成功地区分了污染水平,而RLQ和Fourth-corner分析则在一个高度污染的河口区分了受污染的区域.
- 盐度,污染物和颗粒度被确定为盆地功能的主要驱动因素.
结论:
- 功能特征和指数是河口压力和污染水平的有效指标,特别是在受到高度影响的系统中.
- 环境过影响特征分布,导致污染区域的聚类和污染较小的地区的分歧.
- 这些发现支持使用功能特征分析来可持续管理热带河口生态系统.
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