The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in Sardinia

A syntaxonomical revision of the plant communities of the <i>Isoëto-Nanojuncetea</i> class occurring in Sardinia is provided. Within this class, the ephemeral herbaceous hygrophilous associations linked to temporarily submerged surfaces occur, which are widespread in the European, Medite...

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Main Authors: Salvatore Brullo, Gianluigi Bacchetta, Salvatore Cambria, Valeria Tomaselli, Gianpietro Giusso del Galdo, Pietro Minissale, Giovanni Rivieccio, Maria Carmela Caria, Simonetta Bagella
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Plants
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Online Access:https://www.mdpi.com/2223-7747/14/14/2187
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author Salvatore Brullo
Gianluigi Bacchetta
Salvatore Cambria
Valeria Tomaselli
Gianpietro Giusso del Galdo
Pietro Minissale
Giovanni Rivieccio
Maria Carmela Caria
Simonetta Bagella
author_facet Salvatore Brullo
Gianluigi Bacchetta
Salvatore Cambria
Valeria Tomaselli
Gianpietro Giusso del Galdo
Pietro Minissale
Giovanni Rivieccio
Maria Carmela Caria
Simonetta Bagella
author_sort Salvatore Brullo
collection DOAJ
description A syntaxonomical revision of the plant communities of the <i>Isoëto-Nanojuncetea</i> class occurring in Sardinia is provided. Within this class, the ephemeral herbaceous hygrophilous associations linked to temporarily submerged surfaces occur, which are widespread in the European, Mediterranean, and Macaronesian countries. It groups plant communities floristically characterized by a rich set of annual hygrophytes or more rarely hemicryptophytes and geophytes, which are also physiognomically, ecologically, and structurally well differentiated. Within this class, two orders are recognized in Sardinia, such as <i>Isoëtetalia</i> and <i>Nanocyperetalia</i>, which are represented by several alliances. In particular, four alliances can be referred to as <i>Isoëtetalia</i> (<i>Isoëtion</i>, <i>Menthion cervinae</i>, <i>Cicendio-Solenopsion laurentiae,</i> and <i>Agrostion pourretii</i>), while a single alliance (<i>Verbenion supinae</i>) belonging to <i>Nanocyperetalia</i> has been identified. Within these alliances, several associations already described have been surveyed, while several other unpublished ones, are here proposed as new to science. Overall, 35 associations are recognized, 18 of which are described for the first time. Each higher-rank syntaxa and related associations are examined from a nomenclatural, floristic, ecological, and chorological point of view. In particular, the more significant phytosociological relevés regarding the examined associations were processed using cluster analysis, DCA ordination, optimclass diagram in order to highlight the correlations between them. As regards the floristic aspects, a checklist of the species occurring in the phytosociological relevés is provided.
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spelling doaj-art-4aa5b27ec88644588a2c692c35b8d7ac2025-08-20T03:32:18ZengMDPI AGPlants2223-77472025-07-011414218710.3390/plants14142187The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in SardiniaSalvatore Brullo0Gianluigi Bacchetta1Salvatore Cambria2Valeria Tomaselli3Gianpietro Giusso del Galdo4Pietro Minissale5Giovanni Rivieccio6Maria Carmela Caria7Simonetta Bagella8Department of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, ItalyDepartment of Life and Environmental Sciences, University of Cagliari, Viale Sant’Ignazio da Laconi 11/13, 09123 Cagliari, ItalyDepartment of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, ItalyDepartment of Biology, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, ItalyDepartment of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, ItalyDepartment of Biological, Geological and Environmental Sciences, University of Catania, Via A. Longo 19, 95125 Catania, ItalyDepartment of Chemistry, Physics, Mathematics and Natural Sciences, University of Sassari, Via Vienna 2, 07100 Sassari, ItalyDepartment of Chemistry, Physics, Mathematics and Natural Sciences, University of Sassari, Via Vienna 2, 07100 Sassari, ItalyDepartment of Chemistry, Physics, Mathematics and Natural Sciences, University of Sassari, Via Vienna 2, 07100 Sassari, ItalyA syntaxonomical revision of the plant communities of the <i>Isoëto-Nanojuncetea</i> class occurring in Sardinia is provided. Within this class, the ephemeral herbaceous hygrophilous associations linked to temporarily submerged surfaces occur, which are widespread in the European, Mediterranean, and Macaronesian countries. It groups plant communities floristically characterized by a rich set of annual hygrophytes or more rarely hemicryptophytes and geophytes, which are also physiognomically, ecologically, and structurally well differentiated. Within this class, two orders are recognized in Sardinia, such as <i>Isoëtetalia</i> and <i>Nanocyperetalia</i>, which are represented by several alliances. In particular, four alliances can be referred to as <i>Isoëtetalia</i> (<i>Isoëtion</i>, <i>Menthion cervinae</i>, <i>Cicendio-Solenopsion laurentiae,</i> and <i>Agrostion pourretii</i>), while a single alliance (<i>Verbenion supinae</i>) belonging to <i>Nanocyperetalia</i> has been identified. Within these alliances, several associations already described have been surveyed, while several other unpublished ones, are here proposed as new to science. Overall, 35 associations are recognized, 18 of which are described for the first time. Each higher-rank syntaxa and related associations are examined from a nomenclatural, floristic, ecological, and chorological point of view. In particular, the more significant phytosociological relevés regarding the examined associations were processed using cluster analysis, DCA ordination, optimclass diagram in order to highlight the correlations between them. As regards the floristic aspects, a checklist of the species occurring in the phytosociological relevés is provided.https://www.mdpi.com/2223-7747/14/14/2187<i>Isoëto-Nanojuncetea</i> classSardiniasyntaxonomytemporary ponds
spellingShingle Salvatore Brullo
Gianluigi Bacchetta
Salvatore Cambria
Valeria Tomaselli
Gianpietro Giusso del Galdo
Pietro Minissale
Giovanni Rivieccio
Maria Carmela Caria
Simonetta Bagella
The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in Sardinia
Plants
<i>Isoëto-Nanojuncetea</i> class
Sardinia
syntaxonomy
temporary ponds
title The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in Sardinia
title_full The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in Sardinia
title_fullStr The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in Sardinia
title_full_unstemmed The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in Sardinia
title_short The Plant Communities of the Class <i>Isoëto-Nanojuncetea</i> in Sardinia
title_sort plant communities of the class i isoeto nanojuncetea i in sardinia
topic <i>Isoëto-Nanojuncetea</i> class
Sardinia
syntaxonomy
temporary ponds
url https://www.mdpi.com/2223-7747/14/14/2187
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