4.7 Article

A Link Between Plant Stress and Hydrodynamics? Indications From a Freshwater Macrophyte

期刊

WATER RESOURCES RESEARCH
卷 57, 期 9, 页码 -

出版社

AMER GEOPHYSICAL UNION
DOI: 10.1029/2021WR029618

关键词

freshwater macrophyte; chlorophyll fluorescence; biomechanics; drag force; flow-vegetation interactions

资金

  1. European Community [654110]
  2. Projekt DEAL

向作者/读者索取更多资源

The study found that different plant handling/storage procedures can significantly impact plant hydrodynamics even within a short period, with an approximately 30% variation in the mean drag coefficient across groups, comparable to variations found in different species of freshwater macrophytes in previous studies. Plants with the highest stress levels also exhibited the lowest drag coefficient among the groups considered, suggesting a potential link between plant stress and hydrodynamics.
Live plants are increasingly used in hydraulic laboratories to investigate flow-vegetation interactions. In such experiments, they are often exposed to stressful handling and storage that can cause strong physiological responses and modifications in plant biomechanics. Little is known about the potential effect of these impacts on the performance of plants during hydraulic experiments. In this multidisciplinary study with a freshwater macrophyte (Potamogeton natans) we assess whether the duration and the conditions in which plants are stored in a laboratory prior to testing can impact plant stress, biomechanics and hydrodynamics, and quantify this impact. Plant stress was evaluated using chlorophyll fluorescence analysis (and the maximum quantum yield of photosystem II as specific indicator). Plant hydrodynamics were assessed using the drag coefficient calculated from drag force measurements at two flow scenarios. The results show that different plant handling/storage procedures can have a significant impact on plant hydrodynamics even within a short time frame, with a variation of the mean drag coefficient of approximately 30% across groups, which is comparable to the variation found across different species of freshwater macrophytes in previous studies. Plants with the highest level of stress were also characterized by the lowest drag coefficient across the groups considered, suggesting a potential link between plant stress and hydrodynamics.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据