Realm: Terrestrial
Climate: Temperate
Biome: Mediterranean forests, woodlands and scrubs
Central latitude: 42.770000
Central longitude: 10.300000
Duration: 6 years, from 1898 to 1998

224 records

54 distinct species

Across the time series Iphiclides podalirius is the most frequently occurring species

Methods

I divided faunistic data according to the year of collection into six twenty year periods (1889–1908 1909–1928 1929–1948 1949–1968 1969–1988 1989–2008). I obtained bibliographic information from the recent database of Italian Lepidoptera (Parenzan and Porcelli 2006). When possible I used the year of collection as reported in literature instead of publication date. I also included collection data from hand netting between 1999 and 2008 and by Malaise trapping between 1999 and 2004 in several different localities of Elba (Dapporto and Cini 2007 Dapporto and Strumia 2008a b). I also revised the Verity collection in the Museo di Storia Naturale La specola in Firenze in order to search for unpublished data and to confirm the presence of specimens from published data. This collection mainly comprises specimens collected in the first 50 years of the 20th century.The relative abundance of species occurrence in source areas for Italian offshore islands (SSF) (here called source frequency) is calculated as the number of 10 × 10 km squares occupied by each species within 50 km from the Italian Peninsula Sicilian. and Sardinian-Corsican coastlines (from Balletto et al. 2005 and Dapporto and Dennis 2008b). For the Elba endemic Lycaeides villai I used as SSF the proportion of 10 × 10 km squares of the whole Lycaeides genera (L. argus L. idas L. bellieri L. corsicus) indeed the relationships between these species are still unclear (compare Jutzeler et al. 2003 Parenzan and Porcelli 2006). The relative abundance of species on islands (SIF) (called island frequency) is the proportion of offshore west Italian islands occupied by each species. These data are those used by Dapporto and Dennis (2008b). Unit of abundance = Presence, Unit of biomass = NA

Citation(s)

Dapporto, L. (2009) Core and satellite butterfly species on Elba island (Tuscan Archipelago, Italy). A study on persistence based on 120 years of collection data. Journal of Insect Conservation, 13, 421–428.