Gayana Bot. 69(1): 57-87, 2012 ISSN 0016-5301 Lichens of Aisen, Southern Chile Líquenes de Aisén, sur de Chile WANDA QUILHOT, MAURICIO CUELLAR, RODRIGO DÍAZ, FRANCISCO RIQUELME & CECILIA RUBIO Herbario de Líquenes UV, Departamento de Química y Recursos Naturales, Facultad de Farmacia, Universidad de Valparaíso, Casilla 5001, Valparaíso, Chile.
[email protected] ABSTRACT The lichen mycobiota of Aisen (southern Chile) comprises 319 taxa in 87 genera. All of the species of Menegazzia and Protousnea, previously recorded in Chile, are present in this region. The diversity of biomes, from temperate rainforests −particularly in oceanic zones− to steppe areas, offers an enormous number of macro and microhabitats favorable for lichens. The highest lichen diversity, 56 %, was recorded in an undisturbed locality in Laguna San Rafael National Park. Lichen species diversity is higher in oceanic temperate rainforests than in steppe areas, where the majority of Antarctic lichens (23 %) are registered. Levels of endemism are rather high (26 %) and are due mainly to species of the genera Protousnea, Pseudocyphellaria, Menegazzia, Cladonia, Sticta, Nephroma. Other biogeographical elements in the región’s lichen mycobiota are: cosmopolitan (16 %), austral (16 %) and bipolar (13 %). Lichen diversity in Aisen represents about 20 % of the known lichen mycobiota of Chile. KEYWORDS: Lichen diversity, endemism, steppe areas, biogeography. RESUMEN La micobiota liquénica de la Región de Aisén incluye 319 especies en 87 géneros; el número total de especies de los géneros Menegazzia y Protousnea registrados en Chile se encuentran en esta región. La diversidad de biomas, desde bosques templado-lluviosos, particularmente en zonas oceánicas, a áreas estepáricas, ofrece una variedad de macro y microhabitats favorables para los líquenes.