- Botanical assistant University Catania, 1974—1980, botanical researcher, since 1980. Reviewer Botanical Journal Informatore Botanico Italiano, Italy, since 1998. Science coordinator research projects University Catania.
Achievements include research in outstanding national and international findings of bryophytic species dating back to the ancient Tertiary flora as well as of species having spread during the evolutionary outburst of the Permian. Research in taxonomic revisions of Bryophytes. Research in reassessments of taxa endemic to the Mediterranean bryophytic flora.
Research in descriptions Of New Taxonomic Combinations For The Bryophytic Flora. Research in description of syntaxa new to the science having contributed to identify the bryophytic vegetation in southern Europe.