Data underlying the publication: How to build vegetation patches in hydraulic studies: a hydrodynamic-ecological perspective on a biological object

We provide data on the morphological and biomechanical characteristics of four species of fully submerged freshwater aquatic macrophytes that can grow into well-defined patches. The dataset covers three relevant levels of organisation: individual plants (inside patches), isolated patches and multiple neighbouring patches. <br> During the field sampling, the following parameters were collected and paired with data on local hydrodynamic conditions (water depth and flow velocity measurements): Plant level: plant height, dimensions of stem cross section, Young’s modulus, second moment of area, flexural stiffness, Cauchy number. Patch level: width, length, height and their allometric relationships; density; fresh and dry mass per m2. Between-patch level: species composition (% cover in the patch), minimum and maximum gap size (distance between consecutive patches), distance between patch centroids.

本数据集提供了四种可形成规整斑块的全沉水淡水大型水生植物的形态学与生物力学特征数据。数据集涵盖三类相关组织水平：斑块内部的单株植物、孤立斑块以及相邻多斑块组合。
野外采样期间，本研究采集了如下参数，并将其与局地水动力条件数据（水深与流速实测值）进行配对关联：
植株水平：株高、茎横截面尺寸、杨氏模量（Young’s modulus）、截面二次矩（second moment of area）、弯曲刚度、柯西数（Cauchy number）；
斑块水平：斑块的宽度、长度、高度及其异速生长关系、斑块密度、单位平方米的鲜重与干重；
斑块间水平：物种组成（斑块内盖度百分比）、最小与最大间隙尺寸（相邻斑块间的距离）、斑块质心间的距离。