The Circum-Mediterranean Region is represented by a narrow strip of land on the south coast of the Crimea, where a climate similar to that of the Mediterranean coast has permitted the development of a flora closely resembling that of the valley of the Arno.
REVEL
The fauna of European Russia does not very materially differ from that of western Europe. In the forests not many animals which have disappeared from western Europe have held their ground; while in the Urals only a few—now Siberian, but formerly also European—are met with. On the whole, Russia belongs to the same zoo-geographical region as central Europe and northern Asia, the same fauna extending in Siberia as far as the Yenisei and Lena. In south-eastern Russia, however, towards the Caspian, we find a notable admixture of Asiatic species, the deserts of that part of Russia belonging in reality rather to the Aral-Caspian depression than to Europe.
For the zoo-geographer only three separate sub-regions appear on the East-European plains—the tundras, including the Arctic islands, the forest region, especially the coniferous part of it, and the Ante-Steppe and Steppes of the black-earth region. The Ural mountains might be distinguished as a fourth sub-region, while the south-coast of the Crimea and Caucasus, as well as the Caspian deserts, have their own individuality.
As for the adjoining seas, the fauna of the Arctic Ocean off the Norwegian coast corresponds, in its western parts at least, to that of the North Atlantic Gulf Stream. The White Sea and the Arctic Ocean to the east of Svyatoi Nos belong to a separate zoological region connected with, and hardly separable from, that part of the Arctic Ocean which extends along the Siberian coast as far as to about the Lena. The Black Sea, of which the fauna was formerly little known but now appears to be very rich, belongs to the Mediterranean region, slightly modified, while the Caspian partakes of the characteristic fauna inhabiting the lakes and seas of the Aral-Caspian depression.
In the region of the tundras life has to contend with such unfavourable conditions that it cannot be abundant. Still the reindeer frequents it for its lichens, and on the drier slopes of the moraine deposits four species of lemming, hunted by the Canis lagopus, find quarters. Two species of the white partridge, the lark, one Plectrophanes, two or three species of Sylvia, one Phylloscopus, and the Motacilla must be added. Numberless aquatic birds, however, visit it for breeding purposes. Ducks, divers, geese, gulls, all the Russian species of snipes and sandpipers, etc., cover the marshes of the tundras, or the crags of the Lapland coast.
The forest region, and especially its coniferous portion, though it has lost some of its representatives within historic times, is still rich. The reindeer, rapidly disappearing, is now met with only in Olonetz and Vologda; the Cervus pygargus is found everywhere, and reaches Novgorod. The weasel, the fox and the hare are exceedingly common, as also the wolf and the bear in the north; but the glutton, the lynx, and even the elk are rapidly disappearing. The wild boar is confined to the basin of the Dwina, and the Bison eropea to the Bielovyezha forests. The sable has quite disappeared, being found only on the Urals; the beaver is found at a few places in Minsk, and the otter is very rare. On the other hand, the hare and also the grey partridge, the hedgehog, the quail, the lark, the rook, and the stork find their way into the coniferous region as the forests are cleared. The avifauna is very rich; it includes all the forest and garden birds which are known in western Europe, as well as a very great variety of aquatic birds. Hunting and shooting give occupation to a great number of persons. The reptiles are few. As for fishes, all those of western Europe, except the carp, are met with in the lakes and rivers in immense quantities, the characteristic feature of the region being its wealth in Coregoni and in Salmonidœ generally.
In the Ante-Steppe the forest species proper, such as Pteromys volans and Tamias striatus, disappear, but the common squirrel, the weasel, and the bear are still met with in the forests. The hare is increasing rapidly, as well as the fox. The avifauna, of course, becomes poorer; nevertheless the woods of the Steppe, and still more the forests of the Ante-Steppe, give refuge to many birds, even to the hazel-hen, the woodcock and the black-grouse. The fauna of the thickets at the bottom of the river-valleys is decidedly, rich and includes aquatic birds. The destruction of the forests and the advance of wheat into the prairies are rapidly impoverishing the Steppe fauna. The various species of rapacious animals are disappearing, together with the colonies of marmots; the insectivores are also becoming scarce in consequence of the destruction of insects, while vermin, such as the suslik (Spermophilus), become a real plague, as also the destructive insects which have been a scourge to agriculture during recent years. The absence of Coregoni is a characteristic feature of the fish-fauna of the Steppes; the carp, on the contrary, reappears, and the rivers are rich in sturgeons. On the Volga below Nijni Novgorod the sturgeon, and others of the same family, as also a very great variety of ganoids and Teleostei, appear in such quantities that they give occupation to nearly 100,000 people. The mouths of the Caspian rivers are especially celebrated for their wealth of fish.