海洋变暖对地中海西北地区的捕捞和收入构成的影响
Lucía Espasandín1, Francisco Ramírez1, Miquel Ortega1
1Department of Marine Renewable Resources, Institute of Marine Sciences (ICM-CSIC), Barcelona, Spain.
Global change biology
|March 21, 2025
概括
海洋变暖正在改变地中海渔业的捕捞和收入组成. 这项研究揭示了向温暖水域物种和远离寒冷水域物种的转变,影响了渔船队并突出了适应需求.
科学领域:
- 海洋生物学 海洋生物学
- 渔业 科学 渔业 科学
- 气候变化影响 气候变化影响
背景情况:
- 海洋变暖显著影响海洋生态系统和渔业.
- 捕捞量和收入组成的变化会对社会经济产生深远的影响.
研究的目的:
- 评估由于海洋变暖而导致的西北地中海渔业捕捞和收入组成的时空变化.
- 解开驱动这些变化的潜在过程.
主要方法:
- 对23年的商业着陆时间序列的分析.
- 捕获的加权平均热亲和度 (捕获的平均温度:MTC) 和收入 (收入的平均温度:MTR) 的计算.
- 跨分类组,渔船队和港口的评估.
主要成果:
- 与当地海水温度相关的MTC (0.68°C/十年) 和MTR (0.58°C/十年) 的持续时间上升.
- 观察到显著的热带化 (温暖亲和物种的增加) 和脱北化 (冷亲和物种的减少).
- 脱化特别影响了海底渔业和主要的商业物种.
结论:
- 海洋变暖显然正在改变地中海渔业的组成.
- 收入的平均温度 (MTR) 方法为经济影响提供了新的见解.
- 观察到的变化凸显了渔船的适应能力和潜在脆弱性,为管理优先事项提供了信息.
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