基于特征的社区指数对物种选择的敏感性
Marta Sáinz-Bariáin1, Julia Polo2, Antonio Punzón1
1Spanish Institute of Oceanography (IEO, CSIC), Santander Oceanographic Center (COST-IEO), Avenida Severiano Ballesteros, 16, 39004 Santander, Spain.
Marine pollution bulletin
|January 31, 2025
概括
基于特征的指标可能会受到物种选择的偏见,有利于丰富或商业重要物种. 排除无脊椎动物显著改变了社区特征分析,强调了它们的生态重要性.
科学领域:
- 海洋生态海洋生态学
- 生态系统评估 生态系统评估
- 生物多样性信息学 生物多样性信息学
背景情况:
- 基于特征的指标对于评估对海洋社区的环境影响是有价值的.
- 数据的局限性,特别是关于研究较少的物种,可以在这些指标中引入偏差.
- 物种选择方法对基于特性的指数的影响需要进行彻底的调查.
研究的目的:
- 评估物种选择过器 (发生,分布,丰度) 对基于特征的指数的影响.
- 为了确定特征数据的可用性和其对海底群体的代表性的偏见.
- 评估排除特定分类群体 (如无脊椎动物) 对社区特征分析的影响.
主要方法:
- 从东北大西洋和地中海的底层拖网调查中编制了246种底生动物的15个生态特征.
- 根据物种的发生,分布和丰度应用过器来评估选择偏差.
- 分析了物种选择对社区一级特征指标的影响,并比较了无脊椎动物数据和无脊椎动物数据的结果.
主要成果:
- 特征数据显示,大量,大型和商业或保护相关的物种存在显著偏差.
- 种类选择过器对整体社区特征组成的影响很小.
- 排除无脊椎动物物种大大改变了社区特征分析的结果,揭示了它们的关键作用.
结论:
- 特征数据收集方法可以引入偏见,过度代表某些物种.
- 无脊椎动物在塑造社区特征方面发挥着至关重要的作用,应纳入分析.
- 需要仔细考虑物种选择,以进行基于特征的强有力的生态评估.
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