在一条带有洪水平原的河流中进行疏和沉积物排放. 在帕拉纳河的物理化学和微生物效应
Maria Josefina Gonzalez1, Stella Maris Gonzalez1, Aldo Raul Paira1,2
1Instituto Nacional de Limnología (CONICET-UNL), Ciudad Universitaria Pje. El Pozo s/n Santa Fe, CP 3000, Argentina.
Heliyon
|January 15, 2025
概括
维护疏暂时改变了河流状况,增加了一些污染物和细菌. 然而,影响是暂时的,帕拉纳河生态系统在疏后60天内恢复正常.
科学领域:
- 环境科学 环境科学
- 河流生态 河流生态
- 海洋生物学 海洋生物学
背景情况:
- 人类的活动,如维护疏,显著改变水生环境和息地.
- 港口通道的经常性疏操作构成了持续的环境挑战.
- 了解疏对生态的影响对于可持续的港口管理至关重要.
研究的目的:
- 评估巴拉纳河维修疏对环境的影响.
- 分析物理化学参数,污染物和细菌种群的变化.
- 评估疏操作的短期,中期和即时影响.
主要方法:
- 在疏过程中和之后收集和分析沉积物和水样.
- 测量了临界学参数 (pH,溶氧,导电性),重金属,生物制剂,碳化合物和营养物质.
- 量化细菌指标:大肠杆菌,肠杆菌,总大肠杆菌和异质型细菌.
主要成果:
- 疏导致物理化学变量由于沉积物再悬浮而立即,暂时增加.
- 在沉积物和水中观察到一些重金属的高度.
- 细菌数量在疏过程中增加,特别是在降雨后,但在手术后恢复到基线水平.
结论:
- 疏的影响与降雨等自然干扰相当或小于其影响.
- 河流生态系统表现出弹性,在60天内恢复正常.
- 维护疏的影响是暂时的,帕拉纳河系统显示恢复能力.
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