ABSTRACT

Calicioid lichens and fungi form a diverse polyphyletic group whose species richness is often associated with old-growth forests and ecological continuity. One of the last intact forest landscapes south of the 50th parallel in Québec includes the Ya’nienhonhndeh territory, which has been the focus of a protected area project directed by the Huron-Wendat First Nation for more than ten years. To contribute to the characterization of its conservation value, we report the calicioids from the area. We identified 34 species in eight genera from 187 samples collected in old-growth stands of balsam fir, black spruce and yellow birch. Our four most remarkable discoveries are Chaenotheca nitidula Tibell (n = 11), Chaenothecopsis australis Tibell (n = 1), and C. tsugae Rikkinen (n = 2), which are reported for the first time from the province, as well as Sclerophora coniophaea (Norman) Mattsson & Middelb. (n = 18), which is rare in North America and was previously reported only once in Québec. As a result of this inventory, the Ya’nienhonhndeh is now the second richest area known for calicioids in Québec, after Parc national de la Gaspésie. We conclude that it is an ancient forest ecosystem whose conservation value is high based on its unique biodiversity, and that it warrants protection.

摘要

Calicioid 地衣和真菌形成了一个多样化的多系群，其物种丰富度通常与原始森林和生态连续性有关。魁北克 50 度线以南最后的完整森林景观之一包括Ya'nienhonhndeh地区，该地区一直是 Huron-Wendat 第一民族指导的保护区项目的重点，已有十多年的时间。为了有助于表征其保护价值，我们报告了该地区的类球藻。我们从在香脂冷杉、黑云杉和黄桦的老林中收集的 187 个样本中鉴定了 8 个属的 34 个物种。我们最显着的四个发现是Chaenotheca nitidula Tibell (n = 11)、Chaenothecopsis australis Tibell (n = 1) 和C. tsugae Rikkinen (n = 2)，这是该省首次报道的，以及Sclerophora coniophaea (Norman) Mattsson & Middelb。(n = 18)，这在北美很少见，以前在魁北克只报道过一次。由于这一清单，Ya'nienhonhndeh现在是魁北克省第二大类球藻产区，仅次于 Parc national de la Gaspésie。我们得出结论，它是一个古老的森林生态系统，其独特的生物多样性具有很高的保护价值，值得保护。