在过去的半个世纪中,跨规模的人类威胁共同推动了中国河口鱼群的减少
Junlin Ren1,2,3,4, Sikai Wang1,3,4, Yong Chen5
1East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China.
Global change biology
|October 18, 2025
概括
中国的河口鱼种群在过去50年中因渔业和水而减少. 全球变暖对物种丰富性产生影响,需要对重要的河口生态系统进行协调,多层面的保护.
科学领域:
- 海洋生态海洋生态学
- 保护生物学 保护生物学
- 环境科学 环境科学
背景情况:
- 河口鱼群是生态系统健康的关键指标,并面临着各种人类造成的威胁.
- 缺乏关于河口鱼类趋势和威胁反应的长期,空间广泛的数据.
- 了解多层次威胁对于有效保护和恢复脆弱的河口生态系统至关重要.
研究的目的:
- 在中国三大河口建立一个关于鱼群和人类威胁的长期数据集.
- 为了确定50年来鱼类丰富和丰富的模式.
- 为了验证人为威胁和观察到的鱼群变化之间的关系.
主要方法:
- 编制了一套数据集,涵盖了50多年的鱼群 (所有生命阶段) 和多层次的人为威胁.
- 分析了中国三个主要河口的鱼类丰富性和丰富性的趋势.
- 鱼群变化与当地 (捕捞强度),区域 (水/沉积物监管) 和全球 (海面温度) 威胁相关.
主要成果:
- 在过去的半个世纪里,所有三条河口的鱼类丰富度都下降或保持低;丰富度保持稳定.
- 当地渔业强度减少了成年鱼的丰富性;区域水/沉积物调节影响了生命早期阶段 (卵/幼虫).
- 较高的海面温度 (SST) 与物种丰富度的增加相关,尽管区域差异很大.
结论:
- 目前针对单鱼的保护工作对于河口鱼群来说是不够的.
- 一个协调的,多层面的管理战略对于应对不断升级的局部到全球威胁至关重要.
- 这些发现为保护中国和全球的河口鱼群提供了基础.
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