engleski

Diversity, knowledge and spatial distribution of the vascular flora of Croatia

The Balkan Peninsula is recognized as an important center of plant diversity. Despite the fact that Croatia contains more than 50% of all Balkan species of vascular flora, the knowledge of the spatial distribution, α-diversity and relation to the conservation efforts have never been summarized and presented. A spatial analysis was performed on several data sets containing a number of records and a number of species per grid cell. The results show that the Croatian flora consists of 4507 species and 1159 subspecies. The residuals around the linear regression used as a measure of the species richness indicate that Croatia had the highest residual value among the 40 European countries sampled and highest stress on the biodiversity value of the Apennine, the Iberian and the Balkan peninsulas. Based on half a million findings and their spatial distributions, we observed that within one grid cell (35 km2) 542 species could be expected. A number of records based on the herbarium specimens, literature and field observation and related spatial distribution was discussed. The spatial distribution of α- diversity indicates that the national hot spots were more consistent with the Important Plant Areas network than with the network of officially protected areas.

floristic data ; conservation ; biodiversity ; biogeography ; hot spot ; spatial analysis

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