Search results for "Islands"

Habitat type and island identity as drivers of community assembly in an archipelago

2020

Aim: Ecoinformatics offer new opportunity to test islands as biogeographic and eco- logical models. In this paper we predicted three hypotheses: (1) plot-based data issu- ing from vegetation surveys can be used to predict Island Species-Area Relationships (ISARs) or island similarity; (2) the habitat area is an independent predictor of species richness patterns within island; (3) species richness and composition are more de- pendent on habitat type than island identity in land-bridge islands. Area: Tuscan Archipelago, Italy. Methods: We assembled a database of all the vegetation plots available for the archi- pelago. For the first hypothesis we calculated ISARs, using Arrhenius model, and B…

Alternative energy scenarios for small islands: A case study from Salina Island (Aeolian Islands, Southern Italy)

2012

Abstract The Aeolian archipelago is made up of seven main islands situated in the Tyrrhenian sea (Sicily Italy). They represent a suitable scenario for the development of a sustainable energy production system, that could easily be reproduced on other Mediterranean Islands. The fact that these islands depend on the mainland for energy supplies and the high cost of bringing fuel in tanker boats are factors that should strongly encourage the use of renewable energy source technologies. Taking into account the European Commission guidelines, this paper sets out to evaluate potential energy production using photovoltaic and small scale wind power, in order to verify their contribution to overal…

Tourism resources and their development in Maldive Islands

1985

Maldive Islands are characterized by a unique coral nature and thus they posses unique tourism resources though in a one-sided way, namely in the submarine and littoral environment of the islands, lagoons and reefs, associated with the year-round tropical climate. Therefore, not only divers and snorklers enjoy the profuse underwater resources, but also ‘beach tourists’ are attracted by the nature of the beaches and the climatic conditions as well. This environment really guarantees relaxation and recreation. Tourism in Maldives which was introduced in 1972 only, has successfully developed so far. Proof is given by the rapidly growing number of tourists and tourist ‘resorts’ (islands) over t…

Tourism Development in UNESCO Natural Heritage Sites: The Case of Sicilian Volcanic Sites: Mount Etna and Aeolian Islands

2017

Local development often depends on tourism, especially in fragile contexts like islands which represent a special cluster and are the best cases to be analyzed in order to highlight positive and negative aspects of economic development driven by tourism. A sustainable development approach should be taken in account and the UNESCO brand plays a fundamental role in this sense. The aim of this paper is to analyze the link between tourism supply and the growth of tourism demand in the case of UNESCO sites through multivariate regression analysis. The results show a correlation between the variables considered. But the actual structure of supply is still built on conventional sea tourism and is …

Ecological effects of natural ocean acidification on benthic macroalgal communities

2012

Economic conditions of islands and policies to rebalance territorial disparities

2022

The focus on island contexts stems from the fact that they present peculiarities related not only to the morphology of the territory but also to the economic and social system that characterises them. The territory of the European Union includes more than 3,000 islands in the Pacific, Atlantic and Indian Oceans, the Baltic Sea, the North Sea, the Mediterranean Basins and the Caribbean. The islands share similar social, geographical, economic, and environmental characteristics. Con- sidering only island regions, the European Union recognises more than 280 islands, identified as those territories surrounded by the sea, having an area of more than 1 km2, located at least one kilometre from the…

Genomic divergence landscape in recurrently hybridizing Chironomus sister taxa suggests stable steady state between mutual gene flow and isolation

2021

Abstract Divergence is mostly viewed as a progressive process often initiated by selection targeting individual loci, ultimately resulting in ever increasing genomic isolation due to linkage. However, recent studies show that this process may stall at intermediate stable equilibrium states without achieving complete genomic isolation. We tested the extent of genomic isolation between two recurrently hybridizing nonbiting midge sister taxa, Chironomus riparius and Chironomus piger, by analyzing the divergence landscape. Using a principal component‐based method, we estimated that only about 28.44% of the genomes were mutually isolated, whereas the rest was still exchanged. The divergence land…

Cruise tourism effetcts in the EU Islands' economies

2007

The theme of ‘the island condition and the characteristics of the EU territories surrounded by the sea has already been treated in a number of studies and in some recent research projects which have highlighted disparities, structural disadvantages and the presence of an economy which relies excessively on tourism. The aim of this paper is to show the incoming tourism or daily visitors’ flows generated by cruises in the EU islands, and to present the tourist expenditure matrix and the composition of the main expenses. The results seem to show that local economies generated by cruise daily visitors if combined with local productions, could have a good level of economic impact.

«(Des)obediències de la reducció vocàlica en el català de Mallorca»

2013

En el català de Mallorca, el procés de reducció vocàlica de les vocals mitjanes de la sèrie anterior a e neutra en posició àtona no opera (o subaplica) en determinades circumstàncies: (a) en formes derivades productives amb una vocal àtona situada a la síl·laba esquerra o inicial del radical i alternant amb e tancada o e oberta en el radical de la forma primitiva; (b) en formes verbals amb una vocal àtona situada a la síl·laba esquerra o inicial del radical i alternant amb e tancada en una altra forma verbal del mateix paradigma flexiu; (c) en manlleus i paraules apreses amb una vocal àtona e situada, també, a la síl·laba esquerra o inicial del radical i generalment precedida d’una consonan…

Blueprint for a minimal photoautotrophic cell: conserved and variable genes in Synechococcus elongatus PCC 7942.

2011

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