Search results for " island Sicily"
showing 2 items of 2 documents
Genetic diversity and local population structure in Ambrosina bassii (Araceae, Ambrosineae), a Mediterranean relict species
2009
The effects of habitat fragmentation on the genetic structure of Ambrosina bassii are analyzed. The species, whose reproductive biology is mostly unknown, is the only representative of its genus and tribe and it is endemic to the central Mediterranean area. The selected study area was the island of Sicily, in which wild populations show a wide morphological variability and ecological amplitude. Patterns of within- and among-population genetic diversity in eleven Sicilian populations, occurring in six disjunct areas, were examined by means of allozyme electrophoresis. High levels of genetic diversity were found as shown by the mean expected heterozygosity (He ¼ 0.263), the percentage of poly…
THE ESTIMATION OF THE COSTS OF INSULARITY THROUGH A REGRESSIVE ECONOMETRIC MODEL APPLIED TO SICILY
2022
The geographic nature of the islands determines a peculiar condition of peripherality and specific accessibility problems often associated with the presence of structural delays in development processes. Data on the gaps due to insularity, as the case of Sicily clearly shows, returns an alarming picture that highlights employment imbalances, high poverty, high costs for transport, widespread margins, reduced internationalization and a decisive infrastructural inequality. In this work we have tried to offer a contribution to the meager debate on insularity, starting from the measurement of the disadvantage of insularity in economic terms. For Sicily, an estimate of the costs related to the i…