The Danube Delta

Profesor coordonator

Mihai Frumuselu

Student

Florina Gheorghiceanu

Grupa 8213

IMAPA

• The modern Danube Delta began to form after 4000

BCE in a bay of the Black Sea, when the sea rose to

its present level. A sandy barrier blocked the Danube

bay where the river initially built its delta.

• Probably 40 percent of the Delta was built in the last

1000 years. Finding that was like a eureka moment

• At present the delta suffers from a large sediment

deficit after the construction dams on Danube and its

tributaries in the later half of the 20th Century.

• The climate of the Danube Delta is continental

with strong influences from the vicinity of

the Black Sea and it`s prevalent amphibian

environment. It is the driest and sunniest

region of Romania. The mean annual

temperature is 11 °C (-1 °C in January and

22 °C in July), with mean precipitation

between 400 mm/year and 300 mm/year,

decreasing from west to east.

• The Danube Delta falls within Pannonian steppe

ecosystem of eastern Europe, with Mediterranean

influences. As a young region in full process of

consolidation, the Danube Delta represents a very

favourable place for the development of highly

diverse flora and fauna, unique in Europe, with

numerous rare species. It hosts 23 natural ecosystems,

but due to the extent of wetlands the aquatic

environment is prevalent; the terrestrial environment

is also present on the higher grounds of the

continental levees, where xerophile ecosystems have

developed.

• Situated on major migratory routes, and

providing adequate conditions for nesting and

hatching, the Danube Delta is a magnet for birds

from six major eco-regions of the world,

including the Mongolian, Arctic and Siberian.

There are over 320 species of birds found in the

delta during summer of which 166 are hatching

species and 159 are migratory. Over one million

individuals (swans, wild ducks, bald coots, etc.)

winter here.

• It comprises the Danube arms, as well as a

series of more important streamlets and

channels. It is an environment rich

in plankton,worms, mollusca, ephemerides, gr

ubs, spongiae, with numerous species of fish,

such as the carp, pike perch, sheat fish, and

freshwatersturgeons (sterlet, Vyza and Danube

mackerel).

• Recorded history first noted the Delta under Dacian control before being conquered by the Romans. After invasion by the Goths the region changed hands many times. During the 15th century, the Danube Delta became part of the Ottoman Empire. In 1812, following the Russo-Turkish War the borders of Ottoman and Russian Empires were set by Kilia and Old Stambul Channels of Danube, and in 1829 by St George Channel.

Bibliography

• www.wikipwdia.ro

• Geografie-manual pentru clasa a VIII-a

(ed.2011)autori: Silviu Negut,Gabriela

Apostol, Mihai Ielenicz , Editura Humanitas

• www.google.ro – imagini Delta Dunarii