In considering the island of Vir in the Zadar archipelago (central Adriatic Croatia, Zadar County), the author emphasizes the importance of its geographical position and natural- geographic basis for development. The island of Vir is the...
moreIn considering the island of Vir in the Zadar archipelago (central Adriatic Croatia, Zadar County), the author emphasizes the importance of its geographical position and natural- geographic basis for development. The island of Vir is the extension of the zone of Privlaka Peninsula, from which it is separated by shallow Privlački Gaz (Privlaka Draft). There, before the channel called Škav between Vir and the mainland was dredged in 1904, people could walk across during low tide. This position has determined for centuries the existence and development of Vir, especially in modern conditions after a bridge connection was built. The size of the Vir enabled the existence of a settlement with several hamlets since prehistory. In the modern conditions of urbanized growth of the island settlement of the same name, development has also taken place by expanding and linking certain groups of facilities. The shallow draft was bridged by a modern bridge in 1976 so that Vir has really become part of the mainland, similar to the northerly located island ogf Pag, from which it is separated by New Povljana Channel (the narrowest point between Cape Bobovik and Cape Veli Žal is 1200 m wide). Modern roads, the older one built through Privlaka settlement, joining the road from Zadar to Nin, as well as newer one, bypassing Privlaka, constructed in 2010, have significantly reduced the travel time from the regional and county centre of Zadar and allowed the normal development of the island. This, in today's circumstances, has essentially improved and revalorised the geographical position of the island in relation to neighbouring municipalities and other parts of Zadar County, but also in relation to the whole of Adriatic Croatia. West and northwest of Vir the widest part of the Sea of Vir extends to Zadar Channel in the southeast. Its position, geological structure and relief characteristics distinguish Vir from other Zadar islands, because in this sense it is an immediate extension of the Ravni Kotari area, as well as the island of Pag. Also in socio- geographical terms it forms part of the Zadar coastal rim, that is the Zadar urban region which, in modern developmental conditions of development is reflected positively in its growth. Considering its anthropogeographic features, Vir is more similar to the mainland than the island part of the Zadar region. In modern developmental circumstances, Vir forms part of the urban-rural complex of the Zadar urban region which can tentatively be defined as the area from Vir in the NW to the Drage in SE, including a narrow littoral zone, with contemporary extensions of the airport “Zadar” in Zemunik and business zones of Murvica and Poličnik. It is an area with about 125, 000 inhabitants (of whom 71, 500 live in Zadar itself) and 85, 000 apartments (2011). Here, considering the number of recorded tourist overnight stays, the average daily stay is at least 20, 000 people (which almost doubles in summer months while the number of apartments allows a maximum of 270, 000users). The importance of the geomorphological basis stems from the fact that Vir is a typical karst island, mostly privately owned. The processes characteristic of the karst are maximally expressed here. Until recently, the island was bare, with relatively low vegetation, like its northern neighbour Pag. Elevations, from which the erosion has in recent times, washed away the loose soil, were marked by karst formations and sharp rockeries. Here, erosion is caused by the persistent degradation of plant cover as a result of logging, burning, grazing, etc., and is also emphasized by climatic influences (the exposure of the island to winds). However, even this a basis, like the centuries-old pillar of the prevailing livestock breeding economy, has been very significant for the life and survival of the population. The advent of the idea of building “Vir” Nuclear Power Plant in this landscape in the early 1970s was met by a firm refusal from the island and Zadar region population. The rocky pastures of Vir became the focus of the relatively rapid, affordable purchase and sale of island plots for holiday homes, immediately after the construction of the bridge was completed. This has fundamentally changed the previous significance of the position of the island in comparison to neighbouring spatial micro units and the wider region. The geological basis of Vir is crucial to the formation of traditional, natural features, while human activity later gradually created the cultivated landscape. It forms part of the geo-tectonically relatively stable unit of Ravni Kotari within the area of the Istrian and Dalmatian fold, also present on northerly positioned island of Pag. Geological structures consisting predominantly of Upper Cretaceous and Paleogene (Eocene) carbonate rocks, with significant occurrences of Eocene flysch and Quaternary deposits which lie on older Cretaceous strata, are of primary influence. Vir belongs to the eu-Mediterranean climate area (Csa climate), with hot and dry summers and mild winters. In terms of the average temperature, temperature fluctuations and extremes, insolation, precipitation, humidity and windiness, Vir is situated in a pleasant climate, favorable for inhabitancy, economic valorisation, and especially in recent developmental conditions, tourism and recreation. Most of the precipitation which falls on the Vir area seeps into the karst underground. During the rainy season, ground waters emerge as weak springs and submarine springs (Biskupljača Cove with its well, Lučica, Srpljica, Radovanjica, Bunarić, the areas near the lighthouse and along the shore of Vir settlement etc., partly arranged in the form of wells). Some stronger water sources are related to the flysch zone. In 1930, the local water reservoir was built in the village of Vir. The water supply had been quite a problem, although the number of domestic reservoirs from which the population was supplied with water was considerable. With regard to the water resources of the sea that surrounds Vir, the importance of the Sea of Vir, occupying the space between Kvarnerić to the NW and Zadar and the Middle Channels to the SE, should be noted. It has always been an important additional support for life, survival and the development of Vir, and, especially in modern times, for the development of tourism. The island of Vir belongs to the vegetation zone of the real Mediterranean (eu- Mediterranean zone), in fact to the transitional, i.e. contact area bordering the deciduous vegetation of the sub-Mediterranean area. The zone is covered by an indigenous clima-zonal community of mixed forests and maquis, consisting of holm oak with black ash (Fraxino orni-Quercetum ilicis, H-ić community). The original vegetation, which has been over-exploited (cutting, burning, grazing, extracting lime, etc.) is degraded in the vegetation of the lower habitus reach, and a similar situation is found on the neighboring Island of Pag, Vrsi Peninsula, along the Velebit Channel and elsewhere. Like other Croatian islands, Vir has been relatively poorly researched zoogeographically. There is a rich diversity of wildlife, both on land and in the sea. On land many species are present, mostly insects, as well as the diverse world of amphibians, reptiles, birds and mammals. Soils, especially those suitable for farming have been an important pillar of life and survival for the population and settlements on Vir since pre-historic times. Most of Vir is marked by the emergence of carbonate rocks on the surface, due to long-term erosion as a result of logging and burning vegetation. On Vir, apart from sporadically present red soil, brown soils on limestone, dolomites and Quaternary sands have developed as well as brown (here usually yellow-grey) soil on the flysch (as eroded variety of brown soils), limestone-dolomite black soils, diluvial soils, collegial soils, rendzinas and washed native soils. The natural-geographical basis has always been of vital importance to the life, survival and development of Vir’s settlements, both those of the past, and the modern, central village of Vir, with its hamlets, Lozice and Torovi. The slight relief, marked mainly by carbonates and to a lesser extent by the flysch or the delluvial structure of geological strata, has always been a suitable prerequisite for the development and survival of settlements, from Liburnian hillforts on suitable elevations or along the coastal cliffs, through ancient and medieval constructions to modern ones. The Mediterranean area, with its mild climate, has further faciliated the retention of the population and economic development, as well as the appearance of soils suitable for farming. The former vegetation, used by the population as a building material or firewood, has given way to rocky pastures, which are thus forming the basis for the development of a small livestock breeding economy, supplemented by agriculture and sea-use (fishing, collecting shellfish and molluscs). In modern conditions, proximity to the mainland has enabled the simple bridging of the shallow draft by a modern, paved road bridge, allowing optimal connections with neighbouring Privlaka Peninsula, Nin and the regional centre of Zadar, and thus providing a convenient connection to the motorway and other transport networks in the country. Due to the ideal combination of its attractive geographical position, natural-geographic basis and traffic- geographic links, the island of Vir is developing under modern conditions into a specific, attractive urbanized coastal area as part of the Zadar urban region, with particular emphasis on the development of tourism and related activities.