Created:
Koroleva Alina
Lopatko Larisa
Tutor:
Solodilova V.N.,
the teacher of English
Слайд 3
Wildlife of the Don Land!!!!
Слайд 4As a result, the original steppe landscape has irrevocably vanished
in the mists of time.
Слайд 7Those steppe areas once located at the flatlands and watersheds,
are now totally tilled and sown with wheat, maize, sunflower,
thus making about 60% of the Region`s land.
Слайд 8The natural forest vegetation of the Don Land has undergone
a significant transformation. The pineries originally growing at the sandy
soils of the Middle Don Land, say, have been completely annihilated, while the total forested area by the middle of the 19th century was reduced to 2.4%.
Слайд 10However those later attempts aimed at artificial forest-growing, enabled to
raise the woodiness of the Rostov Region, as to re-establish
local pineries, to create absolutely new and original biocenoses in the shelterbelts of the dry steppe lands. This resulted in steppe climate moderation, yield increase, appearance of a large number of previously absent north forest kings of animals in the Region.
Слайд 11As an example, one can mention birds as the best
studied animal group of the Rostov Region. During the 200
years period of ornithological research, 329 bird species, 219 nesting species among them, have been registered at the lower Don areas. However in the 19th and early 20th centuries totally vanished from the nesting fauna of the Rostov Region were not less than 8 species, including the war eagle, the peregrine, the black cock.
Слайд 13However, just during the last two or three decades, not
less than 30 species have moved to our places, there
species representing both originally southern, north-moving birds, and cold-temperature, south-moving ones.
Слайд 15The above situation is typical for Don steppe mammals as
well. From out of 87 species of mammals registered at
the territory of the Rostov Region in the tarpan, petered out is the saiga, significantly reduced in number are long-eared urchins, fitchews, otters, marmots. Even susliks, have almost completely vanished by now.
Слайд 19The history of the Don-land wildlife convinces us that the
maintenance of great biological diversity of both the natural and
artificial ecosystems which provides their stability, is completely to the best of our common interests.