在大津岛附近的连锁动物群的环境预测因素:从相关性分析,随机森林和通用添加模型的见解
Zhimin Song1, Jiping Zheng1, Yaquan Li2
1Zhuhai Marine Center, Ministry of Natural Resources, Zhuhai, 519015, China.
Marine environmental research
|October 22, 2025
概括
南中国海的鱼种群受到盐度,温度和污染的影响. 弗拉基萨吉塔 (Flaccisagitta enflata) 和佐诺萨吉塔 (Zonosagitta bedoti) 显示对有机污染的敏感性,突出了它们作为关键海洋生物指标的作用.
科学领域:
- 海洋生态海洋生态学
- 生物海洋学 生物海洋学
- 环境科学 环境科学
背景情况:
- 鱼是重要的海洋捕食者,也是生态系统健康的敏感指标.
- 了解它们的种群动态对于有效的海洋生态系统管理至关重要.
研究的目的:
- 为了确定驱动Flaccisagitta enflata和Zonosagitta bedoti.丰富的关键环境因素.
- 评估 chaetognaths作为海洋污染的生物指标的实用性.
主要方法:
- 综合框架结合了相关性分析,随机森林 (RF) 建模和通用添加模型 (GAM).
- 分析了2022-2024年在南中国海大津岛周围进行的18次巡航.
主要成果:
- 这两种物种都表现出冬季的丰度峰值,对盐度,溶解无机 (DIP),总悬浮固体 (TSS) 和东风 (U) 有积极反应.
- 观察到对海面温度 (SST),化学氧需求 (COD) 和溶解无机 (DIN) 的负反应.
- F. enflata的动态主要由U,SST和COD驱动,而Z. bedoti则显示出受U,COD,DIP (近岸) 和SST,DIP,TSS (海上) 影响的息地依赖模式.
- 与COD的强烈负相关性证实了chaetognaths作为有机污染的生物指标的作用.
结论:
- 该研究成功地确定了使用一种新的分层框架对chaetognath空间时间动态的占主导环境预测因素.
- 类动物,特别是它们对有机污染 (COD) 的负面反应,可以作为可靠的生物指标.
- 开发的模型提供了一种可转移的方法,用于研究海洋生物与环境的相互作用,并预测基于生态系统的管理的种群动态.
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