在预计的气候变化下,物种再分配为多物种渔业创造了不平等的结果
Owen R Liu1,2, Eric J Ward3,4, Sean C Anderson5
1Ocean Associates Inc., under contract to the Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 2725 Montlake Blvd. E., Seattle, WA 98112, USA.
Science advances
|August 18, 2023
概括
气候变化通过改变物种分布,影响野生渔业. 渔民可能需要适应,因为有价值的物种减少,而其他物种增加,在美国西海岸创造了新的机会.
科学领域:
- 海洋生物学 海洋生物学
- 气候变化影响气候变化的影响.
- 渔业科学 渔业科学
背景情况:
- 气候变化导致物种改变其分布,影响粮食资源和生计.
- 了解这些变化对于野生捕捞渔业至关重要,但目前的预测往往集中在广泛的单一物种上.
- 对渔业区域内同时存在的物种的局部影响尚不清楚.
研究的目的:
- 分析局部环境变化如何影响美国西海岸渔场内的物种混合.
- 预测未来主要 (经济有价值) 和次要 (丰富) 目标鱼类物种的可用性.
- 通过检查物种组成的潜在变化来评估渔业社区的适应能力.
主要方法:
- 分析特定物种对局部环境变化的反应,如海洋变暖和脱氧.
- 模拟既定渔业足迹内同时出现的物种的集体转移.
- 评估主要和次要目标物种的空间再分布.
主要成果:
- 预计变暖和氧气减少将减少沿海关键,高价值鱼类物种的可用性.
- 丰富的,二次目标物种的可用性预计将增加.
- 主要和次要物种的显著空间重组表明不同地区的适应机会各不相同.
结论:
- 气候变化带来的物种分布变化将改变美国西海岸渔业中的鱼群组成.
- 渔业社区的适应策略必须考虑多种物种的集体,本地范围的反应.
- 对这些复杂的生态变化进行预测是建立有弹性的渔业生计必不可少的.
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