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波罗的海植物浮游生物物种在盐分梯度沿线的跨物种特征变异性和可塑性

Iris D S Orizar¹, Aleksandra M Lewandowska¹

¹Tvärminne Zoological Station, Faculty of Biological and Environmental Sciences, University of Helsinki, J.A. Palmenin 260, 10900 Hanko, Finland.

Journal of plankton research

|April 28, 2025

概括

植物浮游生物种对盐度变化表现出不同的反应,营养吸收和资源利用效率是关键因素. 一些物种,如Phaeodactylum tricornutum,尽管特征可塑性低,但保持高生物量.

科学领域:

海洋生物学海洋生物学
生态生态学生态生态学
植物浮游生物研究研究

背景情况:

气候变化和全球水循环影响海洋生态系统.
了解植物浮游生物对盐度的塑料反应对于预测生态系统变化至关重要.
波罗的海植物浮游生物面临着度水平的波动.

研究的目的:

为了研究波罗的海10种浮游植物物种的跨物种特征变异性和可塑性.
为了确定盐度梯度如何影响浮游植物的特征.
为了确定关键的特征和物种对盐度的特定反应.

主要方法:

多变量方法应用于10种浮游植物物种.
在六个盐度条件 (035 psu) 中培养了物种.
测量了15种不同的特征,包括营养吸收和资源利用效率 (RUE).

主要成果:

这些物种表现出明显的盐度偏好.
营养摄入量和RUE解释了与细胞大小相关的跨种特征变异性.
细胞元素含量和RUE显示出高可塑性,独立于细胞大小.
低特征可塑性并不一定与低生物质生产相关.

结论:

植物浮游生物的特征变异性和可塑性是特定于物种的.
对于大多数波罗的海植物浮游生物来说,5-20 psu的范围是最佳的.
淡水条件不利,对浮游生物群体构成风险,预计波罗的海将得到新鲜化.

关键词:

波罗的海波罗的海波罗的海植物浮游植物资源利用效率效率.盐度盐度盐度盐度盐度特性可塑性特性可塑性基于特性的特征.

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