engleski

Stands with Arundo plinii Turra and A. micrantha Lam. along the eastern Adriatic coast

According to the recent molecular phylogenetic and morphological studies, three distinct species of Arundo L. (Poaceae) are distributed along the eastern Adriatic Sea coast and islands: (1) A. donax L., the cosmopolitan Giant Reed distributed from the Sub-tropical Asia to the Mediterranean Basin, and two circum-Mediterranean taxa (2) A. plinii Turra and (3) A. micrantha Lam. Presence of A.plinii has been previously reported within the Myrto communis-Pistacietum lentisci (Molinier 1954) Rivas-Martínez 1975 (Quercetalia ilicis Braun-Blanquet ex Molinier 1934) and Narcisso tazettae-Asphodeletum microcarpi Šegulja 1969 associations (Scorzonero villosae-Chrysopogonetalia grylli Horvatić et Horvat 1963) in some localities of the most southern parts of Croatia. Phytocoenological relevés from the stands of A. plinii and A. micrantha were collected in South Croatia (Dalmatia region, 19 relevés), Montenegro (12 relevés) and Albania (three relevés were collected near the towns of Shkodër and Elbasan) in the period from 2009 to 2012. Vegetation data were interpreted in terms of syntaxonomical classification, based on cover and floristic affinities, following the Zürich-Montpellier approach and the International Code of Phytosociological Nomenclature. A. micrantha appears along the coast from the cities of Split and Dubrovnik (South Croatia). It is character and dominant species of the new proposed plant association Arundinetum micranthae Jasprica & Ruščić 2013. In some relevés, A. plinii and A. micrantha appear together in the same stand. According to its floristic structure, physiognomy and ecology, it belongs to the Artemisietea vulgaris Lohmeyer, Preising et Tüxen ex von Rochow 1951 class. This nitrophilous community has developed as low (2-4 m) and dense shrub formation, frequently found on clayey soils, humid for most of the year. Altitudinal range is between 5 and 21 m a.s.l. It appears exclusively on southern expositions on the slopes between 5° and 60°. The cover was 100%. Number of species in the relevés was between 13 and 17 (average 14.3). The association had a large number of companions, mostly from the Scorzonero villosae-Chrysopogonetalia grylli Horvatić et Horvat 1963 and Quercetalia ilicis Braun-Blanquet ex Molinier 1934 communities. This study compares the floristic composition of this association with Arundinetum plinianae Biondi, Brugiapaglia, Allegrezza et Ballelli 1992 (=Arundinetum collinae) from Adriatic coast and other Mediterranean areas, and some communities from the Arundinion collinae Brullo, Giusso, Guarino et Sciandrello 2010 alliance (Lygeo sparti-Stipetea tenacissimae Rivas-Martínez 1978). The syntaxonomic status of the stands with Arundo plinii and A. micrantha is also discussed.

Arundo taxa; phytosociology; Arundinetum micranthae ass. nova Jasprica & Ruščić 2013; eastern Adriatic

nije evidentirano