Abstract
An outline of the main distribution patterns of lichens in the ecoregions of Italy, accounting for their climatic, geographic, and environmental features, is still missing. On the basis of a GIS-based analysis, we summarized: (1) the main features (e.g., surface, climate, landscape, topographic heterogeneity, bedrock, eutrophication) of the 9 ecoregions adopted in ITALIC, the information system on Italian lichens, and (2) the patterns of richness, functional traits, and ecological requirements of lichens in the ecoregions. Our GIS-based analysis describes for the first time the main features of the 9 ecoregions adopted in ITALIC, highlighting differences which could explain the main lichen patterns. Overall, the exploration of the Italian lichen biota is still a work in progress, some regions being still underexplored, especially in the South, with new taxa being reported every year. Our research could provide a baseline for further advancements in the understanding of species richness and community composition of Italian lichens, at a regional scale.
Highlights
Climatic, geographic, and environmental conditions are quite heterogeneous across Italy, resulting in substantial ecoregional diversity
This is reflected in distinctive lichen distribution patterns that likely result in strong differences of local community compositions [1]
This study mainly aims at summarizing, on the basis of a GIS-based analysis, (1) the main features of the 9 ecoregions adopted in ITALIC, and (2) the distribution main patterns of lichen richness, functional traits, and ecological requirements in the ecoregions
Summary
Geographic, and environmental conditions are quite heterogeneous across Italy, resulting in substantial ecoregional diversity This is reflected in distinctive lichen distribution patterns that likely result in strong differences of local community compositions [1]. A well-known example is described by Nimis and Tretiach [2], concerning the relevant difference in lichen community composition between the eastern and western parts of the Italian Peninsula In his first checklist of Italian lichens, Nimis [3] provided a first outline of the potential distribution of lichens within 9 ecoregions
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