功能多样性作为保护区网络内岛屿沙上人为干扰的早期指标
Matheus Augusto1, Rayane R S Abude2, Ricardo S Cardoso3
1Laboratory of Marine Ecology, Department of Ecology and Marine Resources, Institute of Biosciences, Federal University of the State of Rio de Janeiro (UNIRIO), 458 Pasteur Avenue, Urca, Rio de Janeiro, Brazil; Graduate Program in Neotropical Biodiversity, Federal University of the State of Rio de Janeiro (UNIRIO), Brazil.
Marine pollution bulletin
|December 25, 2025
概括
岛上的沙显示出不同的生物多样性. 功能多样性有效地检测到人类的影响,暴露的海支持比受保护的更丰富的宏观动物社区,突出了海洋保护区 (MPA) 内的保护需求.
科学领域:
- 海洋生态海洋生态学
- 岛屿生物地理学岛屿生物地理学
- 保护科学 保护科学
背景情况:
- 岛屿沙对生物多样性研究至关重要,但对人类影响的研究不足.
- 在这些动态生态系统中,宏观植物群落的功能多样性尚不清楚.
- 海洋保护区 (MPA) 网络为研究岛屿息地的人为压力提供了机会.
研究的目的:
- 评估岛屿沙上的宏观昆虫群落的分类学和功能多样性模式.
- 确定环境,季节性和人为因素如何影响这些多样性模式.
- 评估功能多样性在检测MPA网络内的人为干扰方面的有效性.
主要方法:
- 在夏季和冬季对伊尔哈格兰德岛的保护和露天海进行了调查.
- 使用PERMANOVA和SIMPER分析了社区结构.
- 模拟的多样性描述器 (物种丰富,丰富,辛普森的多样性,功能丰富,均性,分歧) 与使用通用线性模型 (GLMs/GLMMs) 的环境和人为预测因素.
主要成果:
- 环境梯度是由谷粒大小,海面积和保护状况决定的.
- 暴露的海,更大,更好地保存了更细的沉积物,表现出更高的丰富性,物种丰富性和功能分歧.
- 功能差异随着谷物大小和城市化而减少;功能均性随着保护而下降.
结论:
- 功能多样性是早期检测岛屿沙上人为干扰的敏感指标.
- 海地区和保护状况对宏观植物的丰富性有积极的影响.
- 谷物大小和城市化是影响功能多样性指标的关键因素.
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