Application of IUCN red listing criteria at the regional level: a case study with Boletales across the Apennine province ecoregion and EU-habitats of Central Italy

A Red List of the 100 Boletales (Agaricomycetidae) species recorded in Apennine Province ecoregion Subsections “Tuscan Basin, 1C1b” and “Umbria and Marche Apennine, 1C2a” (central Italy) is provided. According to the IUCN categories and criteria, 67% of the assessed species are classified as threatened, whereas 19% are Near Threatened (NT), 11% are Least Concern (LC) and 3% are Data Deficient (DD). As a consequence of the downlisting applied to the majority of the assessed taxa, no species results Critically Endangered (CR), while 44.78% of the threatened species are Endangered (EN) and 55.22% Vulnerable (VU). The distribution of Non-Threatened (NT, LC) species across 1C1b and 1C2a subsections is quite uniform, whereas the distribution of the Threatened species varies in a dissimilar way. In fact, the two subsections share 33 (4 EN, 29 VU) Threatened species, while 23 (18 EN, 5 VU) are present exclusively in 1C1b subsection and 11 (8 EN, 3 VU) only in 1C2a subsection. The present assessments will allow in future to assess these species also against the criterion A of the IUCN protocol, given that it will be possible to define a trend of the populations and to highlight a possible reduction. Supplemental data for this article is available online at https://doi.org/10.1080/11263504.2021.1918782 .

本数据集收录了意大利中部亚平宁省生态区两个亚区——“托斯卡纳盆地（1C1b）”与“翁布里亚-马尔凯亚平宁（1C2a）”内已记录的100种牛肝菌目（Boletales，伞菌亚纲Agaricomycetidae）物种的红色名录。依据国际自然保护联盟（IUCN）的评估类别与标准，本次评估的物种中67%被列为受威胁物种，另有19%为近危（Near Threatened，NT）、11%为无危（Least Concern，LC），3%为数据缺乏（Data Deficient，DD）。由于多数评估类群的保护等级被下调，本次名录中无物种被评为极危（Critically Endangered，CR）；在受威胁物种中，44.78%为濒危（Endangered，EN），55.22%为易危（Vulnerable，VU）。非受威胁物种（NT、LC）在1C1b与1C2a两个亚区的分布较为均匀，而受威胁物种的分布则呈现出显著差异。具体而言，两个亚区共有33种受威胁物种（其中4种为EN、29种为VU）；另有23种受威胁物种仅分布于1C1b亚区（18种EN、5种VU），11种仅分布于1C2a亚区（8种EN、3种VU）。本次评估可为未来依据IUCN评估准则A开展该类物种的评估提供基础，因后续可明确种群变化趋势并识别潜在的种群衰退情况。本文的补充数据可通过https://doi.org/10.1080/11263504.2021.1918782在线获取。