叶绿素趋势对湖泊来说是负面的,但对河口-沿海水域来说是积极的
James E Cloern1, Alan D Jassby2
1Emeritus, United States Geological Survey, Water Resources Mission Area, Moffett Field, CA 94035.
概括
营养污染会影响水体,增加植物浮游生物. 在湖泊减少的同时,浮游植物生物质在沿海地区增加,突出了复杂的环境挑战.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 水的质量 水的质量
背景情况:
- 营养物质污染 (和) 会导致肥胖化,增加浮游植物生物质和有害藻类的繁殖.
- 全球变化因素影响营养物质转化为生物质,使政策有效性复杂化.
- 植物浮游生物质的生物质动态是水生生态系统健康的关键指标.
研究的目的:
- 评估2000-2019年植物浮游生物质生物质的趋势.
- 分析湖泊与河口沿海地区的变化.
- 了解全球变化对营养驱动植物浮游生物动态的影响.
主要方法:
- 对叶绿素 *a* 趋势的分析.
- 研究了191个湖泊和159个河口沿海遗址.
- 在20年 (2000-2019) 期间进行评估.
主要成果:
- 在大多数湖泊中,浮游植物生物质减少.
- 在大多数沿海地区,浮游植物生物量增加.
- 在湖泊和沿海生态系统之间观察到相反的趋势.
结论:
- 营养污染的管理是复杂的,特别是在混合淡水和海洋环境中.
- 需要对监管过程有更深入的了解.
- 适应性策略和减少营养投入对于缓解至关重要.
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