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通过在一个偏远的亚南极生态系统的引入路径分析来确定海洋入侵威胁和管理优先事项

Daniel T I Bayley^1,2, Paul E Brewin^1,3, Ross James⁴

¹South Atlantic Environment Research Institute Stanley Falkland Islands.

Ecology and evolution

|April 24, 2024

概括

海洋物种的引入构成了全球性的威胁,特别是在像南乔治亚和南三明治群岛 (SGSSI) 这样的孤立地区. 船舶生物污染是一个关键的途径,增加了这个温暖的南极门户的入侵风险.

科学领域:

海洋生物学海洋生物学
生态生态学生态生态学
生物安全是生物安全.

背景情况:

新海洋物种的引入是一个日益增长的全球威胁,影响生物多样性和生态系统健康.
具有特有物种的孤立地区,如南乔治亚和南三明治群岛 (SGSSI),特别脆弱.
气候变化和人类活动的增加加大了远程生态系统的海洋入侵风险.

研究的目的:

通过船只生物污染分析海洋非本土物种通过船只生物污染进入SGSSI的入侵途径.
评估该地区船舶流量的增加所带来的风险.
为防止南极水域的海洋入侵提供信息管理策略.

主要方法:

使用自动识别系统 (AIS) 两年来船舶跟踪数据.
在斯科蒂亚海,马哲拉尼海和大陆南极高层生态区域绘制船只运动和行为图.
确定了关键的船舶活动中心和南乔治亚周围的长期停泊地点.

主要成果:

来自全球不同地区的船只经常进入浅水,并在SGSSI停泊长时间.
船舶活动全年持续,涉及多个港口枢纽和跨越国际边界.
气温的升温和SGSSI作为南极之门的作用增加了入侵的可能性.

结论:

在确定的SGSSI枢纽上实施底层和船体监测至关重要.
需要在邻近的国际港口加强生物安全评估和船体监测.
区域合作对于减轻南极地区海洋入侵威胁至关重要.

关键词:

生物安全性生物安全性海洋管理海洋管理网络分析网络分析非本地物种的非本地物种.极地生态系统的极地生态系统

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