Croatia can be subdivided between a number of ecoregions because of its climate and geomorphology, and the country is consequently one of the richest in Europe in terms of biodiversity. There are four types of biogeographical regions in Croatia: Mediterranean along the coast and in its immediate hinterland, Alpine in most of Lika and Gorski Kotar, Pannonian along the Drava and Danube, and continental in the remaining areas. Among the most significant are karst habitats; these include submerged karst, such as Zrmanja and Krka canyons and tufa barriers, as well as underground habitats. The karst geology has produced approximately 7,000 caves and pits, many of which are inhabited by troglobitic (exclusively cave-dwelling) animals such as the olm, a cave salamander and the only European troglobitic vertebrate. Forests are also significant in the country, as they cover representing 46.8% of Croatia's land surface. The other habitat types include wetlands, grasslands, bogs, fens, scrub habitats, coastal and marine habitats. In terms of phytogeography, Croatia is part of the Boreal Kingdom; specifically, it is part of the Illyrian and Central European provinces of the Circumboreal Region and the Adriatic province of the Mediterranean Region. The World Wide Fund for Nature divides land in Croatia into three ecoregions—Pannonian mixed forests, Dinaric Mountains mixed forests and Illyrian deciduous forests. Biomes in Croatia include temperate broadleaf/mixed forest and Mediterranean forests, woodlands and scrub; all are in the Palearctic realm.
Croatia can be subdivided between a number of ecoregions because of its climate and geomorphology, and the country is consequently one of the richest in Europe in terms of biodiversity. There are four types of biogeographical regions in Croatia: Mediterranean along the coast and in its immediate hinterland, Alpine in most of Lika and Gorski Kotar, Pannonian along the Drava and Danube, and continental in the remaining areas. Among the most significant are karst habitats; these include submerged karst, such as Zrmanja and Krka canyons and tufa barriers, as well as underground habitats The karst geology has produced approximately 7,000 caves and pits, many of which are inhabited by troglobitic (exclusively cave-dwelling) animals such as the olm, a cave salamander and the only European troglobitic vertebrate. Forests are also significant in the country, as they cover representing 46.8% of Croatia's land surface. The .other habitat types include wetlands, grasslands, bogs, fens, scrub habitats, coastal and marine habitats. In terms of phytogeography, Croatia is part of the Boreal Kingdom; specifically, it is part of the Illyrian and Central European provinces of the Circumboreal Region and the Adriatic province of the Mediterranean Region. The World Wide Fund for Nature divides land in Croatia into three ecoregions—Pannonian mixed forests, Dinaric Mountains mixed forests and Illyrian deciduous forests. Biomes in Croatia include temperate broadleaf/mixed forest and Mediterranean forests, woodlands and scrub; all are in the Palearctic realm.