Abstract
Abstract Detailed baseline inventories provide the foundation for the conservation of biodiversity. This fundamental knowledge, however, is lacking for lichens in southwestern Ontario. As a result we selected Awenda Provincial Park for a lichen survey because of its diverse and uncommon mesohabitats likely to contain previously unreported species, such as its 285 ha old-growth deciduous forest and its Quercus-Pinus savannah. Two hundred and three species were discovered in 96 genera. Four species are reported as new to Ontario: Abrothallus caerulescens, Bacidia kekesiana, Cheiromycina flabelliformis, and Lecanora minutella. Thirty-five species have a provincial conservation rank of S1 (critically imperiled), S2 (imperiled), or S3 (vulnerable). The five species that are ranked S1 are: Acarospora sinopica, Acrocordia cavata, Anisomeridium biforme, Chaenothecopsis savonica, and Leimonis erratica. Our results illustrate the conservation importance of Awenda and contribute to a better understanding of the dist...
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