Gras-Seen nature reserve
|location||Gottmadingen in the district of Konstanz , Baden-Württemberg , Germany|
|Setup date||April 29, 1985|
|administration||Regional council Freiburg|
The 15.9 hectare area borders the town between the Schaffhausen-Singen railway line and Bundesstraße 34 immediately to the east of Gewerbestrasse and has been a nature reserve since April 29, 1985. It is located in the natural area 030- Hegau within the natural spatial main unit 03- Southern Alpine Foreland ( pre- Alpine hills and moorland). The area is completely surrounded by the " Hegau landscape protection area " and is also part of the 316 hectare FFH area " Gottmadinger Eck " (No. 8218-342).
The main protection purpose is the preservation of the grass lakes as a geological document and as a habitat for a multitude of rare and endangered animal and plant species. These are two almost silted lakes in a dead ice hole , a geological remnant of the worm glaciation . In both lakes there are only small areas of residual water that are hidden behind a wide belt of reeds and are of great importance as spawning grounds for tree frogs , agile frogs and common toads .
The lakes are surrounded by an oak and ash break forest and diverse stocks of reed beds with broad-leaved cattails , yellow iris , rare sedge species and sometimes endangered marsh plants such as the blood-eye or the knotweed .
- District Office for Nature Conservation and Landscape Management Freiburg: Nature reserves in the administrative district of Freiburg . Ed .: Regional Council Freiburg. 2nd Edition. Thorbecke, Ostfildern 2004, ISBN 978-3-7995-5174-8 . Pp. 335-336
- Alfred G. Benzing: Geographical land survey: The natural space units on sheet 186 Konstanz. Federal Institute for Regional Studies, Bad Godesberg 1964. → Online map (PDF; 4.1 MB)