受到威胁的小地中海沿海湖:水生态干扰和当地人为压力 (尺寸很重要)
Viviana Ligorini1,2,3, Eléa Crayol1,3, Frédéric Huneau1,3
1Université de Corse Pascal Paoli, Campus Grimaldi, Corte, BP52, 20250 France.
概括
小的地中海沿海湖,经常被忽视,是重要的生态系统. 这项研究强调了它们的生态重要性和对人类影响的敏感性,倡导综合管理策略.
科学领域:
- 沿海生态 沿海生态
- 湖生态系统的生态系统
- 环境管理环境管理
背景情况:
- 地中海沿海湖面临着来自人类活动和气候变化的日益严重威胁.
- 科学关注和保护工作主要针对大型湖,忽视较小,普遍存在的系统.
- 虽然人们对小湖的了解很少,但它们对区域生物多样性和生态系统服务至关重要.
研究的目的:
- 提供科西卡湖的第一个清单,重点关注小系统 (<0.5公里2).
- 描述在不同人为压力下小湖的功能和敏感性.
- 为地中海小湖生态系统提供适当的管理策略.
主要方法:
- 进行了科西卡湖的区域清单,确定了95个系统,其中91个系统面积小于0.5平方公里.
- 研究了三个小湖 (阿拉苏,圣朱利亚,巴利斯特拉),代表了不同的人类背景.
- 分析了季节性的生物地球化学循环和植物浮游生物群落 (生物质,多样性,光合作用效率).
主要成果:
- 城市化流域的湖 (Arasu,Santa Giulia) 呈现出高的植物浮游生物质,低的多样性和有害的藻类繁殖.
- 一个近乎原始的湖 (巴利斯特拉) 显示出更好的整体状态,但表明局部的人为污染.
- 在研究的湖中观察到季节性生物地球化学周期和植物浮游生物动态的显著差异.
结论:
- 小湖在区域和地中海规模上具有生态意义.
- 人类造成的压力,特别是流域城市化,直接影响小湖的健康和功能.
- 综合管理方法至关重要,考虑到湖在其连接的流域和海洋系统中的湖.
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