海洋变暖增加了迁徙的公牛 (Carcharhinus leucas) 在夏季休息地居住的数量
Nicolas Lubitz1, Paul A Butcher2, Patrick Vianello3
1College of Science and Engineering, James Cook University, 4811 Townsville, QLD, Australia; Biopixel Oceans Foundation, 4878 Smithfield, QLD, Australia.
The Science of the total environment
|June 26, 2025
概括
气候变化正在改变公牛的迁徙模式,导致它们在温带水域停留更长时间. 这种转变影响了海洋生态系统,增加了人与鱼的互动.
科学领域:
- 海洋生物学 海洋生物学
- 气候变化 生态学 生态学
- 动物行为 动物行为
背景情况:
- 气候变化正在导致海洋变暖,改变海洋生态系统.
- 在全球范围内,海洋物种分布和迁移的变化正在发生.
- 关于迁徙海洋捕食者的时空动态的长期数据很少.
研究的目的:
- 研究气候变化对公牛 (Carcharhinus leucas) 居住时间和迁移时间的影响.
- 为了分析15年的被动声学遥测数据以及温度数据.
- 了解公牛如何应对温暖的海洋温度在其温和的夏季休息地.
主要方法:
- 利用了 15 年 (2009-2024) 的被动声学遥测数据.
- 综合遥感和现场温度数据 (1982-2024年).
- 分析了公离开时间和在澳大利亚悉尼附近居住时间的变化.
主要成果:
- 牛在15年中,从温带夏季息地延迟离开,平均每年延迟一天.
- 抵达时间转移到10月,表明延长了居住期.
- 在研究地点观察到海洋变暖0.67°C (海面) 和0.57°C (现场).
- 牛从约19-20,5°C的温带地区离开,由于变暖,这一门越来越少遇到.
结论:
- 由于海水温度上升,公迁徙的时间正在发生变化.
- 在温带水域居住时间的增加对当地掠食压力和人与鱼的相互作用有影响.
- 研究结果强调了迁徙的海洋捕食者对气候变化影响的脆弱性.
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