Search results for "Island"
showing 10 items of 761 documents
Plant species richness, biogeographic and conservation interest of the vascular flora of the satellite islands of Sicily: patterns, driving forces an…
2013
The vascular flora has been investigated on about 60 of the approximately 100 islands and islets of the Sicilian archipelago. This paper provides detailed information on the number of exclusive, rare, or threatened vascular plants living on these islands and islets. Focusing on the 18 most-investigated islets, we evaluate the extent to which species richness, rate of endemism, number of alien plants, and number of terrestrial habitats have been influenced by 1) geographical setting, 2) geological history, 3) geo-pedological variability, 4) bioclimate, 5) number and patchiness of local plant communities, and 6) natural and human disturbance history and regime. Special attention is directed t…
REVISIONE PRELIMINARE DELLA BIODIVERSITÀ ENTOMOLOGICA DELL’ISOLA DI LAMPEDUSA (SICILIA - ITALIA) PRELIMINARY REVISION OF ENTOMOLOGICAL BIODIVERSITY I…
2013
Lampedusa è un'isola appartenente all'arcipelago delle Pelagie, che è particolarmente interessante per l'aspetto faunistico, in quanto crocevia tra la fauna Europea e Africana. Gli insetti, per la loro abbondanza e diversità in natura, rappresentano una classe nel regno animale particolarmente utile per studiare la biodiversità e i fenomeni di migrazione o emigrazione delle specie, e per valutare inoltre eventuali cambiamenti climatici. Allo stato attuale i dati sull'entomofauna non sono organici e sono riportati in modo spesso frammentario, e la check-list più completa disponibile è datata 1995, quasi venti anni fa. Lo scopo di questo lavoro è stato quello di impiegare nuove tecniche di ri…
A previously unreported numph cocoon of Alphasida puncticollis on the islet of Lampione (Sicilian Channel) (Coleoptera Tenebrionidae).
2010
In this paper we present an unusual case of cocoons produced by larvae of Tenebrionid Alphasida (Glabrasida) puncticollis (Solier, 1836), which has been observed on the islet of Lampione (Sicilian Channel). Pupal cocoons have never been recorded for species belonging to this genus, and their occurrence results rarely documented within the family Tenebrionidae. Some ecological implications are discussed.
La corretta citazione del nome "Cytisus aeolicus" (Fabaceae), e sua tipificazione
1999
DEEP RHODOLITH BEDS IN THE USTICA ISLAND (SICILY, SOUTHERN TYRRHENIAN SEA): A SEDIMENTARY AND PALEOECOLOGICAL APPROACH
2018
The results of a multidisciplinary study conducted on the circali- ttoral soft bottom assemblages at Secchitello (Sicchiteddu) and in the neighbouring areas along the southern coast of Ustica Island (Sicily, Southern Tyrrhenian Sea) are presented. In particular, the study pro- vided useful data for a taxonomic, ecological and paleoecological revi- sion of the Coastal Detritic facies with free-living calcareous algae and for a critical analysis of their relationship with the sedimentary dynamics. During a survey, carried out by the University of Catania (1991) with a R.O.V. (remotely operated vehicle), the presence of the Coastal Detritic (DC) biocoenosis, characterized by a surprisingly hig…
Assessment of the environmental quality of the Sicilian coast through a phytoecological and biogeographic analysis
2017
Large-scale habitat measurements have been aided greatly by advances in remote sensing and GIS software. However, the degree of resolution of this technique is still inadequate for many purposes, such as detail monitoring of many habitats that occur on the coast (e.g. temporary Mediterranean pools or ephemeral therophytic grasslands). Lists and distribution mapping of taxa are probably the most commonly used surrogate for overall biodiversity at both local and broader scales. For the Sicilian coasts a complete study, dating back more than 25 years ago and based on a multidisciplinary approach of flora, vegetation and fauna, exists (Raimondo & al. 1990. Quad. Bot. Amb. Appl. 1: 131-182).…
Stipa valdemonensis (Poaceae), a new species from Sicily
2012
A new species of Stipa, endemic to Sicily, is here described and named Stipa valdemonensis. The new taxon is related to S. crassiculmis. Owing to the small number of individuals observed, in few restricted localities only, it is assigned the IUCN threat status “vulnerable”
Valantia deltoidea (Rubiaceae) sulle Madonie (Sicilia)
2011
Valantia deltoidea, a therophyte endemic to Sicily, so far known only from its locus classicus on the Rocca Busambra (Palermo, Province) has recently been found at the foot of the Serre di Quacella (Madonie, on dolomite rock, about 1300 m altitude. Besides outlines of taxonomical characteristics of such species, the data on the new locality and the updated distribution are provided here.
Investigations into the distribution of floristic emergencies of Pantelleria Island (Channel of Sicily, Italy)
2014
Hydrophytic vegetation aspects in the Nebrodi Mountains (Sicily).
2011
A study of the hydrophyte communities of some small ponds in the beech-wood belt of the higher Nebrodi Mts is presented. A new association of shallow stagnant water bodies, the Utriculario-Potametum natantis, is described. Its biological structure, biogeographical characteristics, syntaxonomic position, phytosociological relationships and dynamic links are discussed.