植物浮游生物功能群和碳度在巴西赤道边缘的河口中的动态
Danielle Stephane Campos Souza1, Andrea Christina Gomes de Azevedo-Cutrim1, Ana Karoline Duarte Dos Santos Sá2
1Postgraduate Program in Ecology and Biodiversity Conservation (PPGECB), State University of Maranhão, Paulo VI University City, São Luís, Brazil.
Marine environmental research
|September 28, 2025
概括
巴西阿尼尔河口的植物浮游生物功能群体显示出对城市化和环保化的独特生态反应. 功能特征分类物种,显示环境因素如何塑造受影响的生态系统中的社区组成.
科学领域:
- 生态生态学 生态生态学
- 水生生态学 水生生态学
- 河口生态学 河口生态学
背景情况:
- 了解植物浮游生物的功能群对于过度化的环境中的生态动态至关重要.
- 阿尼尔河口 (ARE) 面临着由于城市化而产生的显著的人为压力.
- ARE受南大西洋宏观流和城市化河流水的影响.
研究的目的:
- 为了评估植物浮游生物的功能多样性 (FD) 在欧和高的区域.
- 确定浮游植物的功能群和环境条件之间的关系.
- 根据季节和空间变化的反应来描述植物浮游生物群落结构.
主要方法:
- 从2022-2023年进行了六次采样活动,分别在两个部门 (高和高) 的八个地点进行.
- 根据功能特征和物种密度,使用FEve,FDiv和FDis指数评估了浮游生物的功能多样性.
- 测量了盐度和pH等环境参数,以了解它们对功能组的影响.
主要成果:
- 植物浮游生物社区包括234种类,其中藻 (57.69%),蓝藻 (14%),和菌株 (8.5%) 占主导地位.
- 确定了25个雷诺德功能组 (FG),受到盐度和pH值的显著影响,M和X1组是最具代表性的.
- 确定了三个主要的功能性特征组:高性物种 (<20微米),海洋藻 (>20微米) 和河口物种 (>20微米).
结论:
- 植物浮游生物的功能组成与环境条件密切相关,特别是盐度和pH值.
- 过度缩部门 (SII) 在雨季期间在功能组内表现出更高的物种代表性.
- 功能特征有效地根据它们在河口梯度内的生态区区分植物浮游生物群.
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