气候变化重新定义了海热点:船舶撞击风险和保护区的差距
Edouard Duquesne1, Denis Fournier1
1Evolutionary Biology & Ecology, Université libre de Bruxelles (ULB), Av. F.D. Roosevelt, 50, CP 160/12, 1050 Brussels, Belgium.
Science advances
|June 25, 2025
概括
气候变化正在全球范围内改变海的息地,到2050年,超过一半的当前热点可能会消失. 许多新的息地可能出现在交通繁忙的航运区,需要适应性海洋保护区 (MPA) 和保护战略.
科学领域:
- 海洋生物学 海洋生物学
- 气候变化 生态学 生态学
- 保护科学 保护科学
背景情况:
- 气候变化对海洋生态系统产生了重大影响,改变了物种分布,并给保护带来了挑战.
- 由于海洋条件的变化,海面临分布变化,影响它们的生存和迁徙模式.
研究的目的:
- 分析气候变化对所有七种海物种全球分布的影响.
- 在各种气候场景下,评估预计的海生境与海洋保护区 (MPA) 和航运走廊的重叠情况.
- 为了在气候变化面前为海提供适应性保护战略的信息.
主要方法:
- 使用的物种分布模型 (SDM) 与2000-2024年的环境数据.
- 根据当前条件和未来三条共享社会经济路径 (SSP) 预计的海息地:2050年和2100年的SSP1-2.6,SSP2-4.5和SSP5-8.5.
- 分析了与MPA和航运强度相关的息地转移,收缩和新息地形成.
主要成果:
- 在海的息地中观察到极地转移和收缩,特别是在高排放SSP5-8.5情景下.
- 到2050年,目前超过50%的海热点可能会消失.
- 许多新预测的息地位于海运强度高的地区,目前只有23%的热点位于现有海洋保护区内.
结论:
- 气候变化迫切需要适应性保护战略,因为海的息地大幅重新分配.
- 目前海热点和海洋保护区之间的有限重叠凸显了保护方面的关键差距.
- 未来的海保护计划必须整合气候预测,并考虑新适合息地的人类活动增加的威胁.
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