Availability of phylogenetic data by year of publication.

The number of studies with available phylogenetic data---as tree files, alignments files or both procured either from online archives or by direct request---organized by year of publication (barplot). Phylogenetic data of some kind (tree and/or alignment files) were available from an online archive for approximately 25% of the studies, and additional data were successfully solicited by direct request for 42% of the studies. Complete datasets were unavailable for 60% of published studies, and data of any kind were unavailable for 33% of studies. The 'policy' arrow indicates the onset of several community initiatives to improve the sharing and preservation of evolutionary (including phylogenetic) data, which coincides with a marked increase in the deposition of phylogenetic data to online archives. For each pair of barplots, the left/right bars correspond to archived/solicited data, respectively.本数据集以柱状图形式展示按发表年份整理的、携带有可用系统发育数据(phylogenetic data)的研究数量，其中系统发育数据的形式可为系统发育树文件(tree files)、序列比对文件(alignments files)，或二者兼具，数据获取渠道包括从在线存档库(online archives)调取或通过直接申请获取。约25%的研究可从在线存档库获取某类系统发育数据（树文件和/或比对文件），另有42%的研究通过直接申请成功获取了补充数据。60%的已发表研究无法获取完整数据集，另有33%的研究无法获取任何类型的系统发育数据。标注为‘政策’的箭头指向若干旨在推动进化（含系统发育）数据共享与保存的社区倡议发起节点，该时间节点与系统发育数据向在线存档库提交量的显著增长恰好重合。每一组柱状图中，左侧柱形与右侧柱形分别对应从存档库获取的数据与通过直接申请获取的数据。