Bird protection tree Hausener Auwald

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Hausener alluvial forest with Nidda oxbow lake

The Hausener Auwald bird sanctuary , officially listed as Bird Sanctuary 6 or Nidda Altarm 6 until 2010 , is located in Frankfurt 's Hausen district . The area extends mainly between the river Nidda in the west, the route of the federal motorway 66 in the south and the Willi-Brundert settlement in the east. A small part of the bird sanctuary is located south of the A 66.

fauna and Flora

There has been no logging in the bird sanctuary since around 1930 . The area belongs to the Frankfurt Green Belt and is located on the orographically left and geographically east side of the canalized Nidda on an oxbow lake . The area is 350 meters long and an average of 70 meters wide. The bird sanctuary is a natural forest with old trees. Among other things, you will find an approximately 250-year-old oak and an approximately 100-year-old hawthorn , many black alder , willow , hybrid poplar , various types of maple and beech . In the undergrowth there are elder , hawthorn, dogwood and currant bushes . Ivy , blackberries and clematis are used as climbing plants .

Since no dead wood has been removed in the Hausener Auwald bird sanctuary since around 1980 , many animals that rely on this wood and the spiders , woodlice and insects that live in it find a habitat in the bird sanctuary. Many birds nest in the bird sanctuary and so you can find tree creepers and woodpeckers such as the rare middle woodpecker as well as titmice and nuthatch . The presence of the kingfisher testifies to the naturalness of the area - in addition to the existence of a lot of dead wood, one reason why this area was surrounded by the city of Frankfurt with a fence. Upon registration, the Frankfurt bird protection officer will conduct guided tours through the bird protection tree.

history

Parts of the Nidda flowed with their natural meanders through the greater Frankfurt area until the end of the 1920s . The first river straightening took place in the 19th century. Since the river was not fully regulated by then, it continued to overflow its banks at times, for example during the snowmelt in spring. Plans for the further straightening of the river, including in the Hausen district, which was incorporated in 1910, had existed since 1911. In order to obtain more living space, these plans were implemented under the direction of the Frankfurt horticultural director Max Bromme from 1927 to 1931; the Nidda was further straightened and provided with several weirs . The snake-shaped oxbow lakes were cut off, but not filled in. It was soon discovered that the stagnant water in these old rivers was an odor nuisance for the residents in summer. That is why a connection to the river was soon created with simple pipes and thus ensured a minimal exchange of water.

In the course of the renaturation of the Nidda and in order to comply with the Water Framework Directive 2015, all oxbow lakes should gradually get a correct connection to the Nidda. The A 66 motorway has been running right through the bird sanctuary since 1976 and divides it into two areas. In the southern section of the bird sanctuary there is no longer an oxbow lake by the Nidda.

literature

  • City of Frankfurt am Main, Umweltamt (Ed.): Stadtgewässer - Discovering rivers, brooks, oxbow lakes, Frankfurt 2004. Therein: Chapter Altarme Nidda, p. 58 ff.

Web links

Individual evidence

  1. ↑ a b City waters - discovering rivers, streams, oxbow lakes, p. 61
  2. ↑ Ornithological walks in the Hausener Auwald bird sanctuary at par.frankfurt.de , the former website of the city of Frankfurt am Main
  3. ↑ Urban waters - discovering rivers, streams, oxbow lakes, p. 59
  4. ^ City of Frankfurt am Main, Environment Agency (ed.): The green belt leisure map . 7th edition, 2011

Coordinates: 50 ° 8 ′ 9 ″  N , 8 ° 37 ′ 10 ″  E