Հայաստանի թռչունների պահպանման միություն | Page 4

Foreword The Caucasus ecoregion covers a total area of 580000 km2 and spans the boundaries of six countries – including the whole area of Armenia, Azerbaijan, Georgia, the Northern Caucasus part of Russia, northeastern Turkey, and part of northwestern Iran. As one of the most biologically rich regions on Earth, the Caucasus is ranked among the planet’s 25 most diverse and endangered hotspots. The Caucasus is also one of WWF’s Global 200 vulnerable ecoregions, identified as globally outstanding for biodiversity. The Caucasus is a hotspot of plant and animal diversity and endemism. Located at a biological crossroads, species from Central and Northern Europe, Central Asia and the Middle East, and North Africa mingle with endemics found nowhere else. As part of the Caucasus ecoregion Armenia has its unique value. It is located in the north-eastern part of the Armenian Plateau and occupies 29740 km2 at altitudes ranging from 380 to 4095 meters above sea level. The geographical location, geological complex structure, vertical zonation and location of the country at the intersection of different floral - faunal provinces have contributed to formation of rich biodiversity and different types of natural ecosystems. To imagine the wealth of the flora it is worthwhile to mention that more than Dr. Mamikon Ghasabyan, Director 2 Armenian Siciety for the Protection of Birds half of the flora of the Caucasus (out of 6500 species), 3500 species of wild-growing vascular plants and the diversity of ecosystems and landscapes includes various elements ranging from sand deserts and wormwood semi-deserts to subalpine and alpine meadows with numerous transitional associations occurring in Armenia, which occupies only 6.7 % of the whole territory of the Caucasus. By density of high vascular plant species Armenia with more than 100 species per sq. km has one of the leading positions in the world. The number of lower plant species and microorganisms exceeds several ten thousands. Armenia also holds a rich diversity of fauna species: 17000 invertebrate and 541 vertebrate species. It should be mentioned that Armenia has an extraordinary rich avifauna: out of 541 species of vertebrate animals occurring in Armenia, 352 are birds. Just for comparison: the whole of Europe has 550 species of birds, the area encompassed by the former Soviet Union has 750 species, the Caucasus ecoregion has about 400 species