Changes in β-diversity of saproxylic beetles along environmental gradients in temperate forests depend on species relative abundances

The dataset contains data on saproxylic beetles sampled in 2012 by flight-interception traps (FIT) hanged on 235 trees in floodplain woodlands along the lower Dyje and Morava rivers (SE Czech Republic).For more information see the article entitled 'Changes in β-diversity of saproxylic beetles along environmental gradients in temperate forests depend on species relative abundances' by Sebek et al. in Journal of Biogeography. The dataset consists of three spreadsheets called Environmental, Beetle records, and Tree phylogeny.Environmental: A table with environmental variables for all trees sampled for saproxylic beetles assemblages by flight-interception traps in floodplain woodlands along the lower Dyje and Morava rivers (SE Czech Republic). Variable description: treeID = unique tree identifier; N and E = latitudinal (North) and longitudinal (East) geographic coordinates; Tree genus = tree genus identity (latin name); Diameter = diameter of a tree at breast height (measured at 1.3 m above ground); Canopy openness = a percentage of open sky 20 m around the tree (fully shaded trees = 0%, fully open-grown trees = 100%).Beetle records: A species by sample matrix of abundances of 676 saproxylic beetle species recorded during the sampling. Abbreviated names of beetle species are given in the first column, tree (sample) identifiers are given in the first row. The tree identifiers correspond to the tree identifiers ('treeID') in the Environmental spreadsheet.Tree phylogeny: A Newick format for phylogeny of six tree genera sampled for saproxylic beetle assemblages. The format code (and an image included) is a simplified pruned tree based on the original phylogeny of Durka & Michalski (2012).本数据集包含2012年通过飞行拦截陷阱（flight-interception traps, FIT）采集的蛀木甲虫（saproxylic beetles）采样数据，该类陷阱悬挂于捷克共和国东南部Dyje河下游与Morava河沿岸泛滥平原林地的235棵树木之上。更多详细信息可参阅Sebek等人发表于《Journal of Biogeography》的研究论文，论文标题为《温带森林中蛀木甲虫的β多样性沿环境梯度变化取决于物种相对丰度》。 本数据集包含三个电子表格，分别为环境数据表（Environmental）、甲虫采集记录表（Beetle records）与树木系统发育表（Tree phylogeny）。 1. 环境数据表：该表格收录了捷克东南部Dyje河下游与Morava河沿岸泛滥平原林地中，所有经飞行拦截陷阱采样以调查蛀木甲虫群落的宿主树木的环境变量。变量说明如下： - `treeID`：树木唯一标识符； - N与E：纬度（北向）与经度（东向）地理坐标； - Tree genus：树木属级分类单元（拉丁学名）； - Diameter：树木胸径（于地面1.3米处实测）； - Canopy openness：树木周边20米范围内的天空开阔度百分比（完全遮阴的树木为0%，完全露天生长的树木为100%）。 2. 甲虫采集记录表：该表格为物种-样品丰度矩阵，记录了本次采样中观测到的676种蛀木甲虫的丰度信息。甲虫物种的缩写名称列于表格第一列，树木（样品）标识符列于表格第一行，且该树木标识符与环境数据表中的`treeID`字段完全对应。 3. 树木系统发育表：该文件包含本次采样涉及的6个树木属的系统发育新克格式（Newick format）数据，其格式编码并附带配套图像，为基于Durka与Michalski（2012）的原始系统发育树简化修剪得到的系统发育树。