This study is part of a general project to analyse the biological and ecological mechanisms that influence the invasion of Mediterranean sand dune ecosystems by alien plants. In this paper we analyse the morphological and functional traits of coastal dune wild species (natives and aliens) based mainly on information from the literature. The most common 130 wild species occurring on the recent (Holocenic) coastal dunes were included considering the invasive status of alien plants. A comparative analysis of functional groups was performed through ordination techniques (PCoA using the Gower index). This reveals four functional groups related to the most important plant communities in coastal vegetation zonation. Alien plants were found in all functional groups and no trait or set of traits was specifically related to them. This indicates that aliens show similar traits to those natives growing in different communities of the coastal dune zonation, from the small beach annuals to the evergreen taller shrubs of the Mediterranean macchia. When the invasive status of alien species was taken into account, however, some differences emerged: a) casual aliens were found in almost all groups but their traits were not interpreted as being due to any particular adaptive strategy; b) naturalised aliens were only found in the less fluctuating habitats of the inner coastal zones; c) invasive alien species were connected with two major plant strategies: annual invasive aliens (quick-to-mature low grasses and herbs) and perennial invasive aliens (taller and often strongly clonal).
Acosta, A., A. Stanisci, S. Ercole and C. Blasi. 2003. Sandy coastal landscape of the Lazio region (Central Italy). Phytocoenologia 33:715-726.
'Sandy coastal landscape of the Lazio region (Central Italy) ' () 33 Phytocoenologia : 715 -726 .
Acosta, A., M.L. Carranza, F. Conti, G. De Marco, G. D'Orazio, A.R. Frattaroli, C.F. Izzi, G. Pirone and A. Stanisci. 2005a. Banca dati della flora costiera psammofila dell'Italia centrale. Inf. Bot. Ital. 37 (1/A):110-111.
'Banca dati della flora costiera psammofila dell'Italia centrale ' () 37 Inf. Bot. Ital. : 110 -111 .
Acosta, A., M.L. Carranza and F. Izzi. 2005b. Combining land cover mapping of coastal dunes with vegetation analysis. Applied Veg. Sci. 8: 133-138.
'Combining land cover mapping of coastal dunes with vegetation analysis ' () 8 Applied Veg. Sci. : 133 -138 .
Akeroyd, J.R. and C.D. Preston. 1990. Notes on some Aizoaceae naturalised in Europe. In: Chater, A.O. Flora Europaea: Notulae Systematicae ad Floram Europaeam. Series 2, N. 3. Bot. J. Linnean Soc. 102: 197-120.
Notes on some Aizoaceae naturalised in Europe , () 197 -120 .
Biondi, E. 1999. Diversità fitocenotica degli ambienti costieri italiani. Bol. Museo Civico di Scienze Naturali di Venezia49: 39-105.
'Diversità fitocenotica degli ambienti costieri italiani ' () 49 Bol. Museo Civico di Scienze Naturali di Venezia : 39 -105 .
Camarda, I. and G. Brundu. 2004. Inventario e sistema informativo delle specie esotiche in Sardegna. Inf. Bot. Ital. 36: 134-138.
'Inventario e sistema informativo delle specie esotiche in Sardegna ' () 36 Inf. Bot. Ital. : 134 -138 .
Campos, J.A., M. Herrera, I. Biurrun and J. Loidi. 2004. The role of alien plants in the natural coastal vegetation in central-northern Spain. Biodiversity and Conservation 13: 2275-2293.
'The role of alien plants in the natural coastal vegetation in central-northern Spain ' () 13 Biodiversity and Conservation : 2275 -2293 .
Castillo, S. A. and P. Moreno-Casasola. 1996. Coastal sand dune vegetation: an extreme case of species invasion. J. Coastal Conservation 2: 13-22.
'Coastal sand dune vegetation: an extreme case of species invasion ' () 2 J. Coastal Conservation : 13 -22 .
Conti, F., G. Abbate, A. Alessandrini and C. Blasi. 2005. An annotated checklist of the Italian vascular flora. Ed. Palombi, Roma.
An annotated checklist of the Italian vascular flora , ().
Cornelissen, J.H.C., A. Lavorel, E. Garnier, S. Diaz, N. Buchmann, D.E. Gurvich, P.B. Reich, H. ter Steege, H.D. Morgan, M.G.A. van der Heijden, J.G. Pausas and H. Poorter. 2003. A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Austr. J. Bot. 51: 335-380.
'A handbook of protocols for standardised and easy measurement of plant functional traits worldwide ' () 51 Austr. J. Bot. : 335 -380 .
Diez-Garretas, B., A. Asensi and R. Gavilan, 2003. Sabulicoulous therophytic plant communities in the Mediterranean region: a proposal of phytosociological synthesis. Phytocoenologia 33: 495-526.
'Sabulicoulous therophytic plant communities in the Mediterranean region: a proposal of phytosociological synthesis ' () 33 Phytocoenologia : 495 -526 .
Di Iorio, A., A. Stanisci, A. Acosta, M. Vergalito and M. Lucarelli. 2005. Caratteri ecologico-funzionali di alcune specie del litorale sabbioso molisano. Inf. Bot. Ital. 37 (1/A): 204-205.
'Caratteri ecologico-funzionali di alcune specie del litorale sabbioso molisano ' () 37 Inf. Bot. Ital. : 204 -205 .
Géhu, J. M., M. Costa, A. Scoppola, E. Biondi, S. Marchiori, J.B. Peris, J. Franck, G. Caniglia and L. Veri. 1984. Essai synsystématique et synchorologique sur les végétations littorales italiennes dans un but conservatoire. Documents phytosociologiques N.S. 8: 394-431.
'Essai synsystématique et synchorologique sur les végétations littorales italiennes dans un but conservatoire ' () 8 Documents phytosociologiques N.S. : 394 -431 .
Heywood, V. (ed.) 1995. Global Biodiversity Assessment. Cambridge Univ. Press, Cambridge.
Global Biodiversity Assessment , ().
Kolar, C. and D.M. Lodge. 2001. Progress in invasion biology: predicting invaders. Trends in Ecology and Evolution 16: 199-204.
'Progress in invasion biology: predicting invaders ' () 16 Trends in Ecology and Evolution : 199 -204 .
Lake, J. C. and M. R. Leishman. 2004. Invasion success of exotic plants in natural ecosystems: the role of disturbance, plant attributes and freedom from herbivores. Biol. Conserv. 117: 215-226.
'Invasion success of exotic plants in natural ecosystems: the role of disturbance, plant attributes and freedom from herbivores ' () 117 Biol. Conserv. : 215 -226 .
Levine, J. M., M. Vilà, C. M. D'Antonio, J. S. Dukes, K. Grigulis, and S. Lavorel. 2003. Mechanisms underlying the impacts of exotic plants invasions. Proc. Royal Soc. London B 270: 775-781
'Mechanisms underlying the impacts of exotic plants invasions ' () 270 Proc. Royal Soc. London B : 775 -781 .
Lloret, F., F. Médail, G. Brundu, I. Camarda, E. Moragues, J. Rita, P. Lambdon and P.E. Hulme. 2005. Species attributes and invasion success by alien plants on Mediterranean islands. J. Ecol. 93:512-520.
'Species attributes and invasion success by alien plants on Mediterranean islands ' () 93 J. Ecol. : 512 -520 .
Lonsdale, W. M. 1999. Global patterns of plant invasions and the concept of invasibility. Ecology 80: 1522-1536.
'Global patterns of plant invasions and the concept of invasibility ' () 80 Ecology : 1522 -1536 .
Pignatti, S. 1982. Flora d'Italia. Edagricole, Bologna.
Flora d'Italia , ().
Podani, J. 1999. Extending Gower's general coefficient of similarity to ordinal characters. Taxon 48: 331-340.
'Extending Gower's general coefficient of similarity to ordinal characters ' () 48 Taxon : 331 -340 .
Podani, J. 2000. Introduction to the Exploration of Multivariate Biological Data. Backhuys, Leiden.
Introduction to the Exploration of Multivariate Biological Data , ().
Podani, J. 2001. SYN-TAX 2000. Computer programs for multivariate data analysis in ecology and systematics. Scientia Publishing, Budapest.
SYN-TAX 2000. Computer programs for multivariate data analysis in ecology and systematics , ().
PySek, P., D. Richardson, M. Rejmànek, G. Webster, M. Williamson and J. Kirschner. 2004. Alien plants in checklists and floras: toward better communication between taxonomists and ecologists. Taxon 53: 131-143.
'Alien plants in checklists and floras: toward better communication between taxonomists and ecologists ' () 53 Taxon : 131 -143 .
Rejmánek, M. and D. Richardson. 1996. What attributes make some plant species more invasive? Ecology 77: 1655-1661.
'What attributes make some plant species more invasive? ' () 77 Ecology : 1655 -1661 .
Rejmánek, M. 2000. Invasive plants: approaches and predictions. Aust. Ecol. 25: 497-506.
'Invasive plants: approaches and predictions ' () 25 Aust. Ecol. : 497 -506 .
Richardson, D., P. PySek, M. Rejmanek, M. Barbour, D. Panetta and C. West. 2000. Naturalization and invasion of alien plants: concepts and definitions. Diversity and Distributions 6: 93-107.
'Naturalization and invasion of alien plants: concepts and definitions ' () 6 Diversity and Distributions : 93 -107 .
Rodgers, J.C. III and K.C. Parker. 2003. Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands. Diversity and Distributions 9: 385-398.
'Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands ' () 9 Diversity and Distributions : 385 -398 .
Stanisci, A., A. Acosta, S. Ercole and C. Blasi. 2004. Plant communities in coastal dunes in Lazio (Italy). Annali di Botanica 4: 115-128.
'Plant communities in coastal dunes in Lazio (Italy) ' () 4 Annali di Botanica : 115 -128 .
Stanisci, A. and F. Conti. 1990. Aspetti vegetazionali di un settore costiero molisano-abruzzese. Ann. Bot. (Roma), Studi sul Territorio 48 (7): 85-94.
'Aspetti vegetazionali di un settore costiero molisano-abruzzese ' () 48 Ann. Bot. (Roma), Studi sul Territorio : 85 -94 .
Suehs, C.M., L. Affre and F. Médail. 2004. Invasion dynamics of two alien Carpobrotus (Aizoaceae) taxa on a Mediterranean island I. Genetic diversity and introgression. Heredity 92: 31-40.
'Invasion dynamics of two alien Carpobrotus (Aizoaceae) taxa on a Mediterranean island I. Genetic diversity and introgression ' () 92 Heredity : 31 -40 .
Sutherland, S. 2004. What makes a weed a weed? Life history traits of native and exotic plants in the USA. Oecologia 141: 24-39.
'What makes a weed a weed? Life history traits of native and exotic plants in the USA ' () 141 Oecologia : 24 -39 .
Taffetani, F. and E. Biondi. 1989. La vegetazione del litorale molisano e pugliese tra le foci dei Fiumi Biferno e Fortore (Adriatico centro-meridionale). Colloques phytosociologiques 26: 323-349.
'La vegetazione del litorale molisano e pugliese tra le foci dei Fiumi Biferno e Fortore (Adriatico centro-meridionale) ' () 26 Colloques phytosociologiques : 323 -349 .
Thompson, K., J.G. Hodgson and T.C.G. Rich. 1995. Native and alien invasive plants: more of the same? Ecography 18: 390-402.
'Native and alien invasive plants: more of the same? ' () 18 Ecography : 390 -402 .
Tutin, T.G., V.H. Heywood, N.A. Burges, D.M. Moore, D.H. Valentine, S.M. Walters and D.A. Webb. 1964-1993. Flora Europea. Cambridge Univ. Press, Cambridge.
Flora Europea , ().
Viegi, L., G. Cela Tenzoni and F. Garbari. 1974. Flora esotica d'Italia. Lav. Soc. Ital. Biogeogr. 4: 125-220.
'Flora esotica d'Italia. Lav. Soc. Ital ' () 4 Biogeogr. : 125 -220 .
Webb, D. A. (ed.). 1964-1993. Flora Europaea. Cambridge Univ. Press, Cambridge.
Flora Europaea , ().
Weber, H.F., J. Moravec and J.-P. Theurillat, 2000. International Code of phytosociological nomenclature. 3rd edition. J. Veg. Sci. 11: 739-768.
'International Code of phytosociological nomenclature ' () 11 J. Veg. Sci. : 739 -768 .
Williamson, M.H. and A. Fitter. 1996. The characters of successful invaders. Biological Conservation 78: 163-170.
'The characters of successful invaders ' () 78 Biological Conservation : 163 -170 .