page_title: Rhine delta (Lake Constance)
section_title: Flora
hierarchical_section_title: Rhine delta (Lake Constance) / Nature park / Fauna and flora / Flora
caption_attribution_description: Deutsch: Wasservögel in der herbstlichen Fussacher Bucht im Naturschutzgebiet Rheindelta, Vorarlberg, Bodensee
context_page_description: The Rhine delta of Lake Constance is the river delta on the southeastern shore of Lake Constance, which the Rhine has formed in a former sea area. It lies mostly in the Austrian province of Vorarlberg, smaller areas are in the Swiss canton of St. Gallen. The two peninsulas in the lake are called Rheinspitz and Rohrspitz.
context_section_description: Although the land area comprises only about a third of the over 2000 hectare nature reserve, the Rhine delta offers habitat for numerous plant species. Riparian forests, scattered meadows, reed beds and grass beds are the most ecologically valuable rural habitats. Large flat water zones and special locations such as dams and ruderal areas increase biodiversity.
  So far, around 600 flowering plants and ferns have been detected, with several species in all of Austria or in Central Europe under threat. 33 species of the area are considered lost or have become extinct. These include, for example, the waterwheel plant, a carnivorous aquatic plant, the rarity of which once led Ferdinand I of Bulgaria to the Rhine delta several times. The decline in species is primarily caused by drainage, intensified land use and river engineering. However, there is also a number of new species in the flora of the Rhine delta, especially from America and Asia, that mainly inhabits artificial locations such as the Rhine dams.
caption: Water birds at the Fußacher bay
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