不能通过或不会通过:在量化河棕鱼 (Salmo trutta) 改善连接时,动机的重要性
Jamie R Dodd1, Ian G Cowx1, Domino A Joyce2
1University of Hull International Fisheries Institute, University of Hull, Hull, UK.
Journal of fish biology
|November 27, 2023
概括
转移鱼类显著改善了他们使用鱼道解决方案的情况,揭示动机是关键. 这表明许多息地碎片化补救工作可能被误判,通过评估没有动机的动物.
科学领域:
- 生态生态学 生态生态学
- 保护生物学 保护生物学
- 环境科学 环境科学
背景情况:
- 由于人类活动造成的息地碎片化会对动物的移动和物种的保护产生负面影响.
- 评估息地修复的有效性,就像鱼类通道解决方案一样,对于领土或部分迁徙物种来说至关重要,但具有挑战性.
研究的目的:
- 通过使用被动集成答应器 (PIT) 遥测,量化转移和非转移的色鱼通过鱼的移动.
- 为了确定鱼的动机对鱼通过解决方案的有效性的影响.
主要方法:
- 河棕鱼 (Salmo trutta L.) 被归类为转移 (移动阻碍的上游并下游释放) 或非转移 (捕获并下游释放).
- 通过鱼口追踪鱼类的移动,使用被动集成答应器 (PIT) 遥测.
- 分析了两组的通行成功率和影响因素.
主要成果:
- 显著更高的比例的转移鱼成功接近,进入,并通过了鱼通过在更广泛的流量条件.
- 较大的转移鱼类更有可能进入通道,这表明生理能力起着作用.
- 转位鱼被证明是鱼通过解决方案有效性的更可靠指标.
结论:
- 鱼的动机是使用鱼通道解决方案的关键驱动因素,影响其有效性.
- 当前对鱼类通道解决方案和其他息地碎片化补救措施的评估可能是有缺陷的,如果基于没有动机的个人.
- 未来的评估应包括搬迁和非搬迁的个人,以进行更准确和更具成本效益的评估.
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