在水力发电调节的淡水系统中,色鱼 (Salmo trutta) 的行为
Lotte S Dahlmo1,2, Gaute Velle3,4, Cecilie I Nilsen3,4
1LFI Laboratory for Freshwater Ecology and Inland Fisheries, NORCE Norwegian Research Centre, Nygårdsgaten 112, 5008, Bergen, Norway. lottesdahlmo@gmail.com.
Movement ecology
|October 14, 2023
概括
水力发电监管影响挪威的淡水生态系统. 湖泊中的海 (Salmo trutta) 活动减少,而水力发电排放对它们的行为没有显著影响.
科学领域:
- 淡水生态学 淡水生态学
- 鱼类学 鱼类学 鱼类学
- 环境科学环境科学
背景情况:
- 挪威的河流和湖泊受到水力发电的监管,影响淡水生态系统和像海鱼 (Salmo trutta) 这样的异种鱼类.
- 湖泊在无人河流系统中至关重要,但它们作为海息地的作用以及水力发电对它们在湖泊中的行为的影响仍未得到充分研究.
研究的目的:
- 调查湖泊作为海息地的重要性.
- 了解水力发电如何影响湖泊环境中的海鱼行为.
主要方法:
- 在挪威奥尔兰塞尔瓦河31只成年海上进行了声学遥测研究.
- 被标记的海鱼 (Salmo trutta) 配备了传感器来监测Vassbygdevatnet湖的存在和行为.
主要成果:
- 在卵迁移期间,在湖中观察到海的高流行率,其活动比河流息地少.
- 秋季活动增加表明湖中可能会在湖中产卵,但水电排放没有影响海深度使用或活动.
- 在湖泊中出现产卵者可能导致在库存评估期间低估河流海种群.
结论:
- 有限的证据表明,水电排放不会显著影响湖泊中海的行为.
- 该研究强调了在海种群动态和库存评估中考虑湖泊息地的重要性.
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