Blochinger Sandwinkel

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"Blochinger Sandwinkel" nature reserve

IUCN Category IV - Habitat / Species Management Area

D-BW-SIG-Mengen - Blochinger Sandwinkel 002.JPG
location Quantities , Sigmaringen district , Baden-Württemberg , Germany
surface 26.625 ha
Identifier 4,274
WDPA ID 162462
Geographical location 48 ° 4 '  N , 9 ° 22'  E Coordinates: 48 ° 4 '4 "  N , 9 ° 21' 31"  E
Blochinger Sandwinkel (Baden-Württemberg)
Blochinger Sandwinkel
Sea level from 550 m to 570 m ( ø 560 m)
Setup date October 7, 1996
administration Regional Council Tübingen
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The Blochinger Sandwinkel area is a nature reserve (NSG number 4.274) designated by ordinance of October 7, 1996 by the Tübingen Regional Council in the northeast of the Baden-Württemberg city ​​of Mengen in the Sigmaringen district in Germany .

location

The approximately 27 hectare large nature reserve Blochinger sand angle is one natural area to the Danube Ablach plates . It is located about two and a half kilometers northeast of the city center of Mengen in the Blochingen district , at an average altitude of 560  m above sea level. NN

description

The heavily meandering Danube was straightened here in the 19th century for long stretches and expanded with a standard profile. This should enable the construction of a railway line and better management of the floodplain. In the restoration of the river bed of the Danube was based on old topographic maps from the years 1821 and 1840 in the years 1991 to 1993 set up a second arm in the form of an S-curve. Bank reinforcements were largely dispensed with, so that the river can create its own bed in the event of flooding by breaking off the bank or landing bed load.

The measure taken here was the first ecologically oriented project of the Integrated Danube Program (IDP), which under the motto " Habitat Danube: Preserve - Develop " protects the people of the neighboring communities from the floods of the Danube and at the same time protects the Danube as a natural treasure and cultural heritage want to receive.

Protection purpose

By designating it as a nature reserve, the Danube renaturation area with original gravel and gravel areas, natural and restored stretches of flowing water, hollows with still water areas and lens-like gravel are to be preserved as

  • Area for an anthropogenically undisturbed natural repopulation (succession of a biological zero zone),
  • Landscape-historical demonstration object in which different moisture gradients in a confined space cause diverse habitat conditions that were characteristic of this section of the Danube in earlier times,
  • Excellent scientific demonstration and scientific research object for water management and ecological studies on the development of a succession area in which frequent flooding, bank and sediment shifts promote the formation of a natural river landscape with typical softwood forest,
  • Natural area of ​​special character, diversity and beauty, in which the dynamic development of the restored section of the Danube is not subject to any restrictive limits, so that natural erosion and sedimentation can create a water landscape typical of the Danube, which varies due to changing river morphology and the resulting stages of succession Provides habitats with pioneer sites for a multitude of rare or endangered species.

In addition, the old Danube bed with its wooded border and adjacent tall herbaceous corridors as well as the former impact slope with its alluvial forest relic are to be preserved.

and display information about the image
On the left the confluence of the two arms of the river, on the right the reunited Danube , which flows on to Riedlingen .

Partner protected areas

The reserve Blochinger sand angle adjacent to the conservation area " Danube and Schmeiental " (4.37.036) and is part of both the FFH type region " Danube between Riedlingen and Sigmaringen " (7,922,342) and the " natural parks Upper Danube ".

Flora and fauna

fauna

Little ringed plover
Wood sandpiper
Great crested grebe

After completion of the ranching work, the area was accepted by breeding birds and migrants as a resting, resting and feeding habitat. A total of 65 bird species have now been observed in the protected area, 30 of them are on the Red List of Endangered Species . The endangered little ringed plover can be described as the “lead bird” for the newly created, open gravel areas of the two islands .

The following bird species sorted by families and species (selection) are recorded in the Blochinger Sandwinkel area :

Furthermore, the FFH species brook lamprey and bitterling live in the protected area .

See also

Web links

Commons : Blochinger Sandwinkel  - Collection of images, videos and audio files

Individual evidence

  1. ↑ Information board The Danube in the "Blochinger Sandwinkel" - natural redesign on historical paths on the Danube Cycle Path south of the nature reserve
  2. ↑ The Integrated Danube Program - Flood Protection & Ecology , accessed on December 20, 2015
  3. ↑ Profile of the nature reserve in the LUBW's list of protected areas , section " Protection purpose"
  4. ↑ DBV local group Mengen (W. Beil, W. Gottwald, U. Löw & M. Stützel 1993): List of species of birds in the Blochinger Sandwinkel area .
  5. ^ Tübingen regional council (ed.): Management plan for the FFH area 7922-342 "Danube between Riedlingen and Sigmaringen" . edited by Mailänder Consult GmbH. August 31, 2017 (163 pages, baden-wuerttemberg.de [PDF]).