鱼类密度较高,距离石油和天然气平台延伸数公里
Joshua M Lawrence1, Douglas C Speirs2, Michael R Heath2
1The Lyell Centre, Heriot-Watt University, Edinburgh, Scotland, United Kingdom.
PloS one
|May 6, 2024
概括
海上平台创造了生物多样性热点,吸引了鱼类. 然而,它们的生态影响比以前理解的要远得多,影响了更广泛的海洋种群和管理决策.
科学领域:
- 海洋生态海洋生态学
- 渔业声学 渔业声学 渔业声学
- 息地工程是指息地工程.
背景情况:
- 离岸结构提供人造珊瑚礁,创造生物多样性热点.
- 这些结构对鱼类种群的"影响范围"尚不清楚.
- 现有的研究表明影响有限,通常在数百米范围内.
研究的目的:
- 调查海上平台密度和鱼类聚合之间的关系.
- 为了确定平台周围鱼类密度较高的空间范围.
- 评估这些发现对海洋管理的影响.
主要方法:
- 使用了高分辨率的渔业声学数据 (回声集成和回声计数).
- 收集了16个北海油气平台和周边地区的数据.
- 分析了学校和非学校鱼类的密度,与平台的近距离相关.
主要成果:
- 在距离平台23公里的地方观察到高密度的非学龄鱼.
- 鱼群遭遇率和非学校鱼群密度在平台密度较高的地区增加.
- 确定了海上结构的远程生态影响,以前没有报告过.
结论:
- 离岸平台可以在很长的距离 (公里) 上显著影响鱼群.
- 这些结构的生态影响可能远远超过之前的假设.
- 这些发现对于未来关于平台退役和海洋空间规划的管理决策至关重要.
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