在采矿后的湖泊 (波兰南南部) 中,藻组成和藻形态对环境污染的反应
Elwira Sienkiewicz1, Michał Gąsiorowski2, Ilona Sekudewicz2
1Institute of Geological Sciences, Polish Academy of Sciences, Research Centre at Warsaw, St. Twarda 51/55, 00818, Warsaw, Poland. esienkie@twarda.pan.pl.
Environmental science and pollution research international
|October 4, 2023
概括
环境压力因素,如酸性矿井排水和重金属,在矿井后的湖泊沉积物中导致藻,特别是Eunotia物种的变形. 虽然重金属度增加,但近期沉积物中的异常藻百分比下降,导致变形的确切原因不清楚.
科学领域:
- 环境科学 环境科学
- 古代气候学是一种古气候学.
- 生态毒理学 生态毒理学
背景情况:
- 采矿后的湖泊可能会受到环境压力因素的影响,例如酸性矿井排水 (AMD) 和重金属污染.
- 藻对环境变化敏感,在压力下可以表现出形态变形.
- 波兰南南部的ŁK-46湖,是在煤开采后形成的,位于AMD受影响的地区.
研究的目的:
- 调查矿山后湖泊沉积物中藻类 (异常) 形成的发生和原因.
- 评估环境压力因素 (低pH值,煤,重金属) 和藻变形之间的关系.
- 使用藻组合重建过去的环境条件.
主要方法:
- 在湖泊沉积物中分析藻残留物,以识别地质学形式.
- 在沉积层中测量重金属度.
- 使用藻推断pH (DI-pH) 重建过去的水pH.
- 历史和当代水pH值测量的比较.
主要成果:
- 藻膜,主要是Eunotia属的藻膜,在湖 ŁK-46沉积物中占12-33%的丰度.
- 自形成以来,该湖一直表现出低pH值和因煤残留物和重金属的污染.
- 在最年轻的沉积物中,重金属度上升,而异常藻的比例下降.
结论:
- 酸性条件和来自AMD的煤残留物可能会导致ŁK-46湖中的藻变形.
- 近期沉积物中重金属增加的地质学形式的下降趋势表明了因素的复杂相互作用.
- 需要进一步的研究,以确定导致藻形的特定致病原体 (pH,煤或重金属).
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