全球贸易网络模式与渔业可持续性相结合
Laura G Elsler1, Maartje Oostdijk2, Jessica A Gephart3
1Stockholm Resilience Centre, Stockholm University, 11419 Stockholm, Sweden.
PNAS nexus
|October 11, 2023
概括
全球海鲜贸易网络对渔业的可持续性产生影响. 具有强大的内部联系的分散的贸易网络与更高的鱼类生物质有关,这表明需要协调的渔业和贸易管理.
科学领域:
- 海洋生物学 海洋生物学
- 渔业科学 渔业科学
- 国际贸易分析 国际贸易分析
背景情况:
- 全球海鲜贸易正在扩大,与海洋种群减少相吻合.
- 现有的研究强调贸易对被开发物种的影响,但缺乏关于网络结构的细节.
研究的目的:
- 调查海鲜贸易网络特征如何影响渔业可持续性.
- 分析贸易网络指标 (连接,持续时间) 与全球鱼类资源状况之间的关系.
主要方法:
- 全球分析了超过40万个双边海鲜贸易流和876个物种的库存状况数据.
- 利用动态面板回归来评估贸易网络指标和渔业可持续性.
主要成果:
- 高模块化 (强大的内部,弱的外部链接) 的分散的贸易网络与较高的相对鱼类生物质相关.
- 从1995年到2015年,观察到模块化的波动和贸易联系的增加 (程度).
- 在贸易联系的数量或持续时间和渔业可持续性之间没有发现显著的关系.
结论:
- 渔业的可持续性受到全球海产品贸易网络的结构的影响,特别是模块化.
- 有效的渔业管理需要整合贸易动态,促进渔业和贸易组织之间的合作.
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