Distribuzione e habitat di Aphanius fasciatus (Valenciennes, 1821) in laguna di Venezia.

Distribution and habitat of Aphanius fasciatus (Valenciennes, 1821) in the Venice lagoon.Distribution and habitat selection of Aphanius fasciatus (Actinopterygii, Cyprinodontidae) in the Venice lagoon are reported here, based on data collected during surveys spanning 10 years (2002-2011) in 172 sampling localities. Sites are located across the four main lagoon basins and were clustered by habitat typology. The species appears to prefer the wide and complex systems of natural salt marshes, whereas "negative" selection is evident for seagrass meadows and open shallow waters. Internal artificial canals located within lagoon islands and in the "valli da pesca" (seminatural fish farms) may also function as important "refuge" habitats for the species. Results are discussed in the light of their implications for conservation, according to the Habitat Directive (92/43/EEC).