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Ammersee (English: Lake Ammer) is a
Zungenbecken A ''Zungenbecken'', also called a tongue basin or tongue-basin, is part of a succession of ice age geological landforms, known as a glacial series. It is a hollow that is left behind by the ice mass, as the snout of the glacier (German: ''Glets ...
lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...
in
Upper Bavaria Upper Bavaria (german: Oberbayern, ; ) is one of the seven administrative districts of Bavaria, Germany. Geography Upper Bavaria is located in the southern portion of Bavaria, and is centered on the city of Munich, both state capital and seat o ...
, Germany, southwest of
Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the States of Germany, German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the List of cities in Germany by popu ...
between the towns of
Herrsching Herrsching am Ammersee is a municipality in Upper Bavaria, Germany, on the east shore of the Ammersee, southwest of Munich. The population is around 8,000 in winter, increasing to 13,000 in summer. Situated at one terminus of the Munich S-Bahn l ...
and
Dießen am Ammersee Dießen am Ammersee (Southern Bavarian: ''Diaßn am Ammasä'') is a municipality in the district of Landsberg in Bavaria in Germany. It is located on the shores of the Ammersee. Geography Situated in the Bavarian Alpine Foreland the town stre ...
. With a surface area of approximately , it is the sixth largest lake in Germany. The lake is at an elevation of , and has a maximum depth of . Like other Bavarian lakes, Ammersee developed as a result of the
ice age An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and gree ...
glacier A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires dis ...
s melting. Ammersee is fed by the River Ammer, which flows as the
Amper The Amper, called the Ammer upstream of the Ammersee, through which it runs, is the largest tributary of the Isar in southern Bavaria, Germany. It flows generally north-eastward, reaching the Isar in Moosburg, about from its source in the Ammerga ...
out of the lake. Like neighbouring
Lake Starnberg Lake Starnberg, or ''Starnberger See'' ) — called Lake Würm, or ''Würmsee'' , until 1962 — is Germany's second-largest body of fresh water, having great depth, and fifth-largest lake by area. It and its surroundings lie in three different Ba ...
- deeper, bigger in surface area, similar in shape - it is a popular location for
watersport Water sports or aquatic sports are sport activities conducted on waterbodies, and can be categorized according to the degree of immersion by the participants. On the water * Boat racing, the use of powerboats to participate in races * Boati ...
s. Ammersee and the
Amper The Amper, called the Ammer upstream of the Ammersee, through which it runs, is the largest tributary of the Isar in southern Bavaria, Germany. It flows generally north-eastward, reaching the Isar in Moosburg, about from its source in the Ammerga ...
are part of the ancient Celtic amber trading route leading to the
Brenner Pass The Brenner Pass (german: link=no, Brennerpass , shortly ; it, Passo del Brennero ) is a mountain pass through the Alps which forms the border between Italy and Austria. It is one of the principal passes of the Eastern Alpine range and has ...
. The word ''Ammer'' is a 13th-century form of ''Amper'', the Celtic ''*ambra'', deriving from the Indo-European ''*ombh-, *mbh-'' "wet, Water". Passenger services have operated on the lake since 1879. Today they are operated by the
Bayerische Seenschifffahrt The , or Bavarian Lakes Shipping Company, is a company that operates shipping services on several lakes in the German state of Bavaria. Services operate on the Königssee, the Starnberger See, the Ammersee and the Tegernsee. The company w ...
company, using a mixture of historic
paddle steamer A paddle steamer is a steamship or steamboat powered by a steam engine that drives paddle wheels to propel the craft through the water. In antiquity, paddle wheelers followed the development of poles, oars and sails, where the first uses wer ...
s and motor ships.


Ecology, biology and conservation

The water quality, which was endangered in the sixties of the 20th century, was significantly improved by comprehensive wastewater remediation measures such as the construction of a ring main, the commissioning of the sewage treatment plant in Eching in 1971 and the rehabilitation of the sewage treatment plants in the Ammer catchment area. Further information on the history and development of the Eching wastewater treatment plant is provided by AWA-Ammersee, which manages drinking water and wastewater in the region. Since the mid-1980s, the nutrient load of the water has shifted from the eutrophic to the mesotrophic range, which means that the nutrient load is low to moderate, the production of algae is moderate, and the average visual depth is over 2 m. The use of the Ammersee as a bathing water is thus secured in the long term. Among the fish living in the lake, an endemic whitefish (''Coregonus bavaricus'') is known, a whitefish species mainly found in the pre-Alpine lakes, whose occurrence has led to a long tradition of quite intensive fishing exploitation of the lake. The lake is also home of the
vulnerable species A vulnerable species is a species which has been Conservation status, categorized by the International Union for Conservation of Nature as being threatened species, threatened with extinction unless the circumstances that are threatened species, ...
of deepwater char ''
Salvelinus evasus ''Salvelinus evasus'', is a vulnerable deepwater char or trout living in the Ammersee lake in Bavaria, Southern Germany. This fish lives in the great depths of the lake, below 80 m. It can reach up to a foot in length, about 30 cm. ''Salve ...
''. Deepwater char are highly sensitive to changes in the quality of the water and some species such as ''
Salvelinus neocomensis ''Salvelinus'' is a genus of salmonid fish often called char or charr; some species are called "trout". ''Salvelinus'' is a member of the subfamily Salmoninae within the family Salmonidae. The genus has a northern circumpolar distribution, and m ...
'' and ''
Salvelinus profundus ''Salvelinus profundus'' (german: Tiefseesaibling 'Deepwater char') is a deepwater char species found only in deep areas of Lake Constance. This fish can reach in length and has a blunt snout with the mouth in subinferior position. Its lower ...
'' were driven recently to extinction in other European lakes. In 2010, even a new species of fish, the Ammersee Kaulbarsch (''Gymnocephalus ambriaelacus''), which is also found only in the Ammersee, was described. With the nature reserves ''Vogelfreistätte Ammersee-Südufer'' (in which the ''Schwedeninsel'' is also located), ''Seeholz'' and ''Seewiese'' as well as ''Ampermoos'', the Ammersee is one of the seven internationally important wetlands in Bavaria according to the so-called Ramsar Convention. On the western shore, access to the shore is closed to the general public except for short stretches, but almost the entire eastern shore is open to the public. Large areas of the shore are still in a near-natural state, but the formerly dense reed beds have decreased significantly since the end of the 1960s. In contrast, microplastic pollution has increased.Martin Müller:
Forscher finden jede Menge Mikroplastik in bayerischen Seen
'' In: ''nordbayern.de.'' 29 October 2019, retrieved 29 October 2019.


Gallery

File:Ammersee2004.JPG, Eastern shore File:Ammersee_Autumn.jpg, Autumn File:- Ammersee - Paddleboat Diessen 03 -.jpg, Paddle Steamer ''Diessen'' on the lake File:Map Ammersee.png, Map of lake with settlements and deepest point marked Ammersee 29.01.2006.jpg, Ice on the Ammersee (2006)


References


External links

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Pictures of the Ammersee
{{Authority control Ramsar sites in Germany Lakes of Bavaria LAmmersee