Search results for "lien"
showing 10 items of 1874 documents
Nuove segnalazioni di Caulerpa racemosa var. cylindracea in aree protette della Sicilia nord-occidentale
2008
Principi di spontaneizzazione in Sicilia di Talinum paniculatum (Talinaceae)
2017
Record of Talinum paniculatum (Talinaceae) naturalized in Sicily. – The record in the urban context of Palermo (Sicily) of Talinum paniculatum, species native to Tropical America and mainly cultivated for ornamental purposes, is reported. It is the first case of naturalization in the Island of a species of Talinaceae family introduced to Palermo in 1984 from Argentina and cultivated in the Botanical Garden collections.
Spreading of the alien seagrass Halophila stipulacea (Hydrocharitaceae) along the sicilian coast (western Mediterranean Sea)
2009
Halophila stipulacea (Forsskål) Ascherson is a tropical seagrass distributed along the western coasts of the Indian Ocean and in the Red Sea (den Hartog, 1977). This species was previously considered a paleomediterranean element, survived as a relict in the eastern Mediterranean Sea, but later on Por (1971) hypothesized that it was a Lessepsian immigrant entered the Mediterranean Sea after the opening of the Suez Canal (1869). H. stipulacea remained in the eastern Mediterranean for several decades (Lipkin, 1975), and only recently it spreads towards the western basin through Malta and the Ionian coast of Sicily (Lanfranco, 1970; Van der Velte and Den Hartog, 1989; Alongi et al., 1993). The …
Study of the alien flora of the urban area of Palermo (Sicily)
2016
Alien plants are an integral part of the Mediterranean agricultural and urban landscape. Taking into account that man is an active voluntary or involuntary carrier of plant diasporas, cities and areas where human activity is predominant represent preferential targets for the study of new plant introductions. In addition, some species as Pennisetum setaceum (Forssk.) Chiov. and Opuntia ficus-indica (L.) Mill., initially exclusive to high disturbed habitats, succeeded in penetrating in cliffs, degraded maquis and garrigues characterizing them. Thus the importance of studying these areas to predict future colonization of more natural habitats. Starting from literature and integrating it with f…
DETECTING INVASION HOTSPOTS OF AILANTHUS ALTISSIMA WITH REMOTE SENSING
2014
ALIEN SPECIES: FRIEND OR ENEMY OF ENVIRONMENTAL HEALTH?
2017
Diversità e struttura dell’avifauna in una successione post incendio di bosco meso-mediterraneo
2005
In questo lavoro sono state analizzate la ricchezza specifica, il turn-over e la struttura della comunità di uccelli in una successione secondaria da incendio (Erico-Quercion ilicis) nel Parco Regionale delle Madonie (Sicilia). Nelle primavere del 2002 e 2003 sono stati effettuati censimenti mediante punti d’ascolto in 6 aree campione di 100 ha bruciate tra il 1993 e il 2001, e in 4 settori di controllo situati in boschi non percorsi dal fuoco rispettivamente da 25 e 50 anni. Nella serie post incendio sono state censite complessivamente 33 specie di uccelli. La ricchezza specifica aumentava bruscamente nei primi 10 anni e raggiungeva un plateau 25-30 anni dopo l’incendio, mentre il turn-ove…
Bright spots as climate‐smart marine spatial planning tools for conservation and blue growth
2021
Marine spatial planning that addresses ocean climate-driven change (‘climate-smart MSP’) is a global aspiration to support economic growth, food security and ecosystem sustainability. Ocean climate change (‘CC’) modelling may become a key decision-support tool for MSP, but traditional modelling analysis and communication challenges prevent their broad uptake. We employed MSP-specific ocean climate modelling analyses to inform a real-life MSP process; addressing how nature conservation and fisheries could be adapted to CC. We found that the currently planned distribution of these activities may become unsustainable during the policy's implementation due to CC, leading to a shortfall in its s…
Food selection of a generalist herbivore exposed to native and alien seaweeds
2018
Understanding which factors influence the invasion of alien seaweed has become a central concern in ecology. Increasing evidence suggests that the feeding preferences of native herbivores influence the success of alien seaweeds in the new community. We investigated food selection of a generalist native grazer Paracentrotus lividus, in the presence of two alien seaweeds (Caulerpa cylindracea and Caulerpa taxifolia var. distichophylla) and two native seaweeds (Dictyopteris membranacea and Cystoseira compressa). Sea urchins were fed with six experimental food items: C. cylindracea, C. taxifolia var. distichophylla, a mixture of C. cylindracea and C. taxifolia var. distichophylla, D. membranace…
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 …