Search results for "Acacia saligna"
showing 3 items of 3 documents
Pine stand density influences the regeneration of Acacia saligna (Labill.) H.L.Wendl. and native woody species in a mediterranean coastal pine planta…
2018
Mediterranean plantations are the most suitable areas to assess vegetation dynamics and competitive interactions between native and exotic woody species. Our research was carried out in a coastal pine plantation (Sicily) where renaturalization by native species (Pistacia lentiscus L. and Olea europaea var. sylvestris) and invasion by Acacia saligna (Labill.) H.L.Wendl. simultaneously occur. The regeneration pattern of woody species in the pine understory was evaluated in six experimental plots along a stand density gradient, from 200 to approximately 700 pines per hectare. Both pine stand density and regeneration by native species had a significant negative relationship with Acacia natural …
Vegetation dynamics within afforested coastal areas: regeneration by native species or invasion by alien species?
2017
During the last century, massive reforestation projects along the dunes of the southern Sicily have been carried out. Such interventions, far from being in line with the current trends of close-to-nature silviculture, are, however, particularly interesting to assess the vegetation dynamics in afforestation areas. Furthermore, these kind of interventions may determine two opposite effects, that is renaturalization by native woody species or invasion by alien species. Acacia spp. are among the most widespread and prominent invaders within Mediterranean-climate areas, where they have already shown the capability to deeply change the characters and the functioning of native ecosystems. For inst…
Diversité des champignons mycorhiziens à arbuscules en association avec Acacia saligna dans différentes régions de la Tunisie
2022
Acacia saligna, appelée également Acacia cyanophylla, est une fabacée arbustive originaire de l'Australie. Cette plante a une grande résilience et s’adapte facilement à de nombreux écosystèmes différents, ce qui lui confère une importance économique forte. De plus, elle forme plusieurs symbioses racinaires avec des microorganismes qui favorisent son développement et améliorent sa résistance vis à vis de différents stress biotiques et abiotiques :(i) les rhizobiums qui fixent l’azote atmosphérique et (ii) les champignons mycorhiziens à arbuscules (CMA) En Tunisie, aucune étude ciblant des microorganismes formant des symbioses racinaires associées à A. saligna n’a été effectuée. Ce travail s’…