Jacobi pond
| Jacobi pond | ||
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The Jacobi pond in autumn; View from the shore in northeast direction |
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| Geographical location | Frankfurt city forest | |
| Tributaries | Königsbach / Luderbach | |
| Drain | Königsbach → Main | |
| Islands | 3 | |
| Data | ||
| Coordinates | 50 ° 4 '11 " N , 8 ° 41' 8" E | |
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| surface | 6 ha | |
| length | 880 m | |
| width | 200 m | |
The Jacobiweiher is a pond in the city of Frankfurt am Main in the state of Hesse . With six hectares of water, the largest still water in the city is located in the Frankfurt city forest in the southern Main district of Sachsenhausen . The Jacobiweiher belongs to the landscape protection area of the Frankfurt Green Belt .
history
The pond was created as a rainwater retention basin between 1931 and 1932 at the suggestion and under the direction of the then Frankfurt Forestry Office manager Hans Bernhard Jacobi . This was done by damming the left Main tributary Königsbach, which flows through the area in a north-westerly direction . Before the damming, the Königsbach had frequently overflowed its banks during heavy rainfall and had caused flooding in the residential areas on its lower reaches in Sachsenhausen. In honor of Jacobi, the pond he initiated was named after him after his death; a memorial stone was placed on the bank.
In Frankfurt vernacular, the Jacobi pond is also referred to as " Lake Lucerne " because of the characteristic shape of its outline, which is somewhat similar to that of the Swiss body of water, and because of the four adjacent districts - Sachsenhausen, Niederrad , Oberrad and Neu-Isenburg .
Flora and fauna
The banks of the Jacobi pond are lined with trees, mainly tall elms ( Ulmus ) and 40 m high beeches ( Fagus ), which are believed to be among the largest representatives of their species in Hesse. In between there are other native tree species such as Norway maple ( Acer platanoides ) and sycamore maple ( Acer pseudoplatanus ). An imported tree species in the vicinity of the water is the black locust ( Robinia pseudoacacia ). In the vicinity of the path along the bank of the pond there are, among other things, the blackthorn ( Prunus spinosa ), honeysuckle ( Lonicera xylosteum ) and the Armenian blackberry ( Rubus armeniacus ), which is also considered a neophyte . Other occurring at Jacobi pond plants include the Yellow Anemone ( Anemone ranunculoides , a relative of Buschwindröschens ), the Common witchweeds ( Circaea lutetiana ) and woodruff ( Galium odoratum ). A noticeable phenomenon near the shore in early summer is the spotted arum ( Arum maculatum ), whose fruit cluster bears bright red berries on its 15 to 30 cm high stalk when ripe. Since 2003, the forest area by the Jacobiweiher has been classified as a fauna and flora habitat according to the FFH guidelines of the EU .
The Jacobi pond is home or feeding place for several native and introduced bird species. The pond serves as a fishing ground for gray herons ( Ardena cinerea ) and cormorants ( Phalacrocorax carbo ). Coot ( Fulica atra ) and green-footed moorhen ( Gallinula chloropus ) as well as the mallard ( Anas platyrhynchos ) live by and on the water . The kingfisher ( Alcedo atthis ) is a rarely seen inhabitant of the shore . The mandarin duck ( Aix gariculata ), which broods locally and is notable for its colorful plumage , was introduced to Frankfurt as an ornamental bird from East Asia as early as the 18th century . In the trees and trees around the Jacobi pond there are other bird species, including the nuthatch ( Sitta europaea ), the stock dove ( Columba oenas ) and all native species of woodpeckers (Picidae).
A population of the red- eared turtle ( Trachemy scripta elegans ), presumably released by private owners, lives in the pond and can often be seen sunbathing on the tree branches in the water when the weather is fine. The fish found in the Jacobi pond include the sturgeon and other species used.
Infrastructure
Art and culture at the Jacobi pond
There are two works of art from the Komische Kunst series in Frankfurt's green belt on the circular hiking trail along the banks of the pond . They were designed by the Frankfurt draftsman and author FK Waechter and implemented as wooden sculptures after his death in 2005. On the north bank of the Jacobi pond is the pee tree, on the south-western bank of which you can find the owl in a Norwegian sweater sitting high on a tree branch . On the northeastern bank of the pond, there is also the possibility of speaking from a lectern in the open air in front of an audience with the Speakers Corner , for which there are wooden benches. In the summer months this place is used for forest services. Also near the northeast bank is the memorial stone for the head of the Forestry Office Jacobi, which was set in 1941, one year after his death.
A south-eastern section of the Frankfurt Green Belt circular hiking trail runs along the Jacobiweiher riverside path and crosses the pond roughly in the middle on a wooden bridge. In cold winters, the ice surface of the frozen pond can be used for ice skating . On the northern edge of the pond there is a restaurant with a restaurant and beer garden.
Transport links
The bank of the Jacobi pond can be reached on foot, on horseback and by bike. The approach with other means of transport requires a short footpath over paved forest paths. Access by public transport is possible with the Frankfurter Waldbahn , tram line 17 of the Frankfurter Verkehrsgesellschaft VgF ; Oberschweinstiege stop . The bus line 963 also has a stop a short distance from the pond with the Neu-Isenburg / tram stop. For motorized private transport, there are parking spaces a few minutes' walk away at the intersections of the Oberschweinstiegschneise with the Isenburger aisle and the Darmstädter Landstrasse . The parking spaces for the restaurants near the shore are reserved for their guests and are only accessible during the opening times of the restaurant.
A contrast to the natural experience of the pond and its surroundings is the fact that, depending on the wind direction, two of the entry and exit lanes of Frankfurt Airport lead directly over the Jacobi pond. The resulting aircraft noise can be perceived as a nuisance. With the westerly winds that are often prevalent in the area, the frequency of passenger and cargo planes flying in at low altitudes over the Jacobiweiher is about one air crossing of the area per minute on approach .
literature
- Magistrate of the City of Frankfurt am Main, Environment Office (Ed.): City waters - discover lakes, ponds, ponds . Therein: Chapter Jacobiweiher, p. 46. Frankfurt am Main, 2003
- Environment Agency of the City of Frankfurt am Main (Ed.): GrünGürtel-Freizeitkarte, 7th edition, 2011
- Various authors: Nature on the doorstep - urban nature in Frankfurt am Main. Results of the biotope mapping . Kleine Senckenberg series 50, E. Schweizerbart'sche Verlagsbuchhandlung (Nägele and Obermiller), Stuttgart 2009. ISBN 978-3-510-61393-9
Web links
- Jacobiweiher at par.frankfurt.de , the former website of the city of Frankfurt am Main
- Heidi Fogel: Lake Lucerne in the Frankfurt City Forest? The Jacobi pond tells many stories . Article on der-isenburger.de focusing on the history of the pond and its role as a flood retention basin. PDF file, 708 kB (accessed July 1, 2015)
- Owl in a Norwegian sweater , a sculpture designed by FK Waechter at Jacobiweiher, with information on the Komische Kunst im Grüngürtel project at kunst-im-oefflichen-raum-frankfurt.de (accessed on October 4, 2011)
Individual evidence
- ↑ “There is still no clear name for the stream. The more common name is Königsbach. ”- City of Frankfurt am Main, Environment Agency (publisher): City waters - discover rivers, streams, oxbow lakes . Frankfurt 2004. Therein: Chapter Königsbach / Luderbach, p. 36
- ↑ a b Kleine Senckenberg-Reihe 50: Nature on the doorstep . In it: Chapter Still waters - biotopes made by human hands , p. 83: Jacobiweiher
- ↑ Gerd-Peter Kossler (ed.) And other authors: Forest in the south of Frankfurt: Stadtwald, Gravenbruch, Mönchbruch, p. 16. Self-published, Frankfurt am Main 1991. ISBN 3-9800853-2-5
- ↑ a b c d e f Environment Agency of the City of Frankfurt: Stadtgewässer, p. 46: Jacobiweiher
- ↑ a b c Jacobiweiher at par.frankfurt.de , the former website of the city of Frankfurt am Main (accessed October 4, 2011)
- ↑ a b c Kleine Senckenberg-Reihe 50: Nature on the doorstep . In it: Chapter Experience biodiversity: Three walks in the city forest, p. 126
- ↑ Kleine Senckenberg-Reihe 50: Nature on the doorstep . Inside: Chapter Experiencing Biodiversity: Three Walks in the City Forest, p. 123
- ↑ a b c d City of Frankfurt am Main, Environment Agency (Ed.): GrünGürtel-Freizeitkarte, 7th edition, 2011.