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厄迪对秘鲁沿岸大型掠食性鱼的数量和息地分布产生影响
Pengchao Jin1, Yang Zhang2, Yanlin Du1
1College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China.
Marine environmental research
|January 29, 2024
概括
中级旋显著影响秘鲁海域大飞 (Dosidicus gigas) 的分布. 与气旋旋相比,抗气旋旋提供了更有利的条件,导致较高的鱼丰富性和适合息地.
科学领域:
- 海洋生态海洋生态学
- 海洋学 海洋学 海洋学
- 渔业 科学 渔业 科学
背景情况:
- 巨型飞 (Dosidicus gigas) 在秘鲁的洪堡生态系统中在生态和经济上至关重要.
- 这种物种的分布对海洋环境变化敏感,特别是区域海洋学变化.
- 在秘鲁水域中,中层层的旋很常见,并对生物地化学过程产生重大影响.
研究的目的:
- 为了研究中等尺度旋在调节环境条件中的作用.
- 评估这些旋对秘鲁海域Dosidicus gigas的丰富性和息地分布的影响.
- 在系统中为D. gigas开发一个息地适宜性指数 (HSI) 模型.
主要方法:
- 使用中心坐标分析鱼分布.
- 开发和应用一个息地适应性指数 (HSI) 模型.
- 对抗气旋旋 (AE) 和气旋旋 (CE) 之间的环境参数和鱼丰度的比较.
主要成果:
- 在AE和CE之间,鱼的数量和息地适合性差异很大.
- 反气旋旋 (AE) 呈现出更高的D. gigas丰度和更大比例的合适息地.
- 旋风 (CE) 的数量较少,其周边集中了合适的息地.
- 在AE,海面温度 (SST) 和50m水温 (T50m) 较为有利,比CE低0.3-0.5°C.
结论:
- 中级旋在塑造秘鲁水温和营养度方面发挥着至关重要的作用.
- 反气旋旋为巨型飞创造了优越的息地,从而增加了它们的数量.
- 了解旋动态对于预测D. gigas分布和管理该地区的渔业至关重要.
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