countries, water quality in Slovenia is considered to be among the highest in Europe. One of the reasons is undoubtedly that most of the rivers rise on the mountainous territory of Slovenia. However, this does not mean that Slovenia has no problems with surface water and groundwater quality, especially in areas with intensive farming. Biodiversity Slovenia signed the Rio Convention on Biological Diversity on 13 June 1992 and became a party to the convention on 9 July 1996. It subsequently produced a National Biodiversity Strategy and Action Plan, which was received by the convention on 30 May 2002. Slovenia is distinguished by an exceptionally wide variety of habitats, due to the contact of geological units and biogeographical regions, and due to human influences. The country is home to four terrestrial ecoregions: Dinaric Mountains mixed forests, Pannonian mixed forests, Alps conifer and mixed forests, and Illyrian deciduous forests. Around 12.5% of the territory is protected with 35.5% in the Natura 2000 ecological network. Despite this, because of pollution and environmental degradation, diversity has been in decline. Slovenia had a 2019 Forest Landscape Integrity Index mean score of 3.78/10, ranking it 140th globally out of 172 countries. Animals The biological diversity of the country is high, with 1% of the world's organisms on 0.004% of the Earth's surface area. There are 75 mammal species, among them marmots, Alpine ibex, and chamois. There are numerous deer, roe deer, boar, and hares. The edible dormouse is often found in the Slovenian beech forests. Trapping these animals is a long tradition and is a part of the Slovenian national identity. Some important carnivores include the Eurasian lynx, European wild cats, foxes (especially the red fox), and European jackal. There are hedgehogs, martens, and snakes such as vipers and grass snakes. According to recent estimates, Slovenia has c. 40–60 wolves and about 450 brown bears. Slovenia is home to an exceptionally diverse number of cave species, with a few tens of endemic species. Among the cave vertebrates, the only known one is the olm, living in Karst, Lower Carniola, and White Carniola. The only regular species of cetaceans found in the northern Adriatic sea is the bottlenose dolphin (Tursiops truncatus). There are a wide variety of birds, such as the tawny owl, the long-eared owl, the eagle owl, hawks, and short-toed eagles. Other birds of prey have been recorded, as well as a growing number of