Vascular flora of the isthmus of Feniglia (southern Tuscany, Italy)
2024
Fiaschi,Tiberio | Bonari,Gianmaria | Frignani,Flavio | Gizzi,Gina | Landi,Marco | Magrini,Sara | Quilghini,Giovanni | Pafumi,Emilia | Scoppola,Anna | Angiolini,Claudia
We studied the vascular flora of the isthmus of Feniglia, a Nature Reserve in southern Tuscany stretching between the Italian Peninsula and Mt. Argentario. Since the nineteenth century, the area has undergone significant environmental modifications due to intensive grazing and deforestation. Later, rehabilitation interventions were carried out, including reforestation and planting of dune species, making it an interesting protected area to study for its botanical aspects. Therefore, we aim to compile the floristic inventory of this distinctive Mediterranean area by integrating old and new data. The checklist comprises 502 specific and subspecific taxa of vascular plants. The life-form spectrum shows a predominance of therophytes, followed by hemicryptophytes. The chorological spectrum highlights the dominance of Mediterranean species, followed by Euromediterranean and Eurasian species. The presence of 15 species of regional importance, 3 species of the Italian red list and 3 Italian endemics (Ornithogalum exscapum Ten., Limonium multiforme Pignatti, Linaria purpurea (L.) Mill.) is noteworthy. Despite the environmental changes undergone in this area, our study reports the presence of remarkable species, including rare ones such as Atriplex littoralis L., Ruppia spiralis L. ex Dumort., and species at their distribution margin in the Italian Peninsula, such as Staphisagria macrosperma Spach, Juncus sorrentinoi Parl. and Maresia nana (DC.) Batt. Additionally the presence of 26 alien species, of which 15 are invasive, 9 naturalized and 2 casual, indicates a relatively low presence of alien species. Notwithstanding the significant environmental changes that the Feniglia isthmus has experienced in the last century and the high tourist pressure during the summer, the presence of the protected area suggested the effectiveness and benefits of such a form of protection for plant diversity.
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