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15-928: The main valley is about 70 km long and begins north of the Zeller See . It forms the broad vale of the Saalfelden Basin , the heart of the Saalachpinzgau region. Initially it separates the Kitzbühel Alps in the west, from where the Saalach originates, from the Salzburg Slate Alps in the east; later, it divides the Loferer Steinberge and the Chiemgau Alps in the west from the Berchtesgaden Alps in

30-576: A genus in 1803. Classified in the frog's-bit family ( Hydrocharitaceae ), Elodea is native to the Americas and is also widely used as aquarium vegetation and laboratory demonstrations of cellular activities. It lives in fresh water. An older name for this genus is Anacharis , which serves as a common name in North America. The introduction of some species of Elodea into waterways in parts of Europe, Australia, Africa, Asia, and New Zealand has created

45-425: A significant problem and it is now considered a noxious weed in these areas. Elodea canadensis , sometimes called American or Canadian water weed or pond weed, is widely known as the generic water weed. The use of these names causes it to be confused with similar-looking plants, like Brazilian elodea ( Egeria densa ) or hydrilla ( Hydrilla verticillata ). American water weed is an attractive aquarium plant and

60-410: Is a good substitute for Brazilian elodea. It can be used for science experiments in classrooms demonstrating how plants use carbon dioxide with the usage of bromothymol blue . The American water weed lives entirely underwater with the exception of small white flowers which bloom at the surface and are attached to the plant by delicate stalks. It produces winter buds from the stem tips that overwinter on

75-509: Is a small freshwater lake in the Austrian Alps . It takes its name from the city of Zell am See , which is located on a small delta protruding into the lake. The lake is 4 kilometres (2.5 mi) long and 1.5 kilometres (0.93 mi) across at its widest. It is up to 73 metres deep and at an elevation of 750 metres above sea level. The lake is fed by numerous small mountain streams in summer, but only one stream flows out of it into

90-482: Is also of economic importance as an attractive and easy to keep aquarium plant, although in the states of Alabama, New Hampshire, New York, and South Carolina it has been deemed Elodea densa an invasive species and is illegal to sell. Chemical methods are ineffective in eradicating Elodea – at best they only slow growth for a season or two. As Elodea spreads into new ecosystems, it experiences rapid growth for 5–6 years and then slows as soil nutrients are used up. Elodea

105-584: Is threatening aquatic environments across Europe. Chemicals may be used in places that cause undue economic concerns, but very few aquatic herbicides are registered for aquatic use in the EU. Fluridone , the most commonly used aquatic herbicide is highly effective against Hydrilla, but only marginally effective against Elodea, especially at lower use rates. The plants can also be removed from lakes and rivers mechanically. They are extracted either by hand or by using rakes, chains, mowing boats or weed buckets. The problem

120-707: The Lofer Road  (B 178) as far as the Austro-German border. In Bavaria the line of the valley is followed by the Bundesstraße ;21 and, from Piding , the Bundesstraße 20 . This route is known as the Little German Corner ( Kleines Deutsches Eck ). 47°32′N 12°44′E  /  47.533°N 12.733°E  / 47.533; 12.733 Zeller See (Salzburg) Lake Zell ( German : Zeller See ; Italian : Lago di Zell )

135-473: The Salzach . In winter the lake completely freezes and is used for winter sports. In summer the lake is used for pleasure boating (boats powered by combustion engines are not allowed except for the ferries that cross the width of the lake from Zell to Thumersbach, so electrically powered boats can be rented instead). The water is very clear and suitable for swimming or diving, but can be chilly. The southern end of

150-564: The Glemmtal, that were laid down between the Zeller See and Maishofen as gravel, blocked the southerly course of the Saalach and force it to flow northwards along its present riverbed. This has been evinced by excavations between Atzing and Unterreit . The Pinzgau Road  (B 311) runs through the Saalach Valley from Zell am See to just after Lofer followed by a short section of

165-546: The east. Near Reichenhall and Großgmain the valley broadens again and ends between Freilassing and Salzburg , the Saalach flowing for its last few kilometres through the plain of the Salzburg-Freilassing Basin . The roughly 30 km long upper reaches of the Saalach is not called the Saalachtal , but bears the name Glemmtal , the area of its source streams being called Hinterglemm . The Saalach Valley

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180-528: The lake bottom. It also often overwinters as an evergreen plant in mild climates. In the Autumn, leafy stalks will detach from the parent plant, float away, root, and start new plants. This is the American water weed's most important method of spreading, while seed production plays a relatively minor role. Silty sediments and water rich in nutrients favor the growth of American water weed in nutrient-rich lakes. However,

195-404: The lake, near Schüttdorf , is shallower and mostly filled with water weed , making it unsuitable for boating or swimming. The "Alpine Lake" can be seen from nearby ski trails. This Austrian location article is a stub . You can help Misplaced Pages by expanding it . Water weed Elodea is a genus of eight species of aquatic plants often called the waterweeds described as

210-533: The plants will grow in a wide range of conditions, from very shallow to deep water, and in many sediment types. It can even continue to grow uprooted, as floating fragments. It is found throughout temperate North America, where it is one of the most common aquatic plants. American water weed is an important part of lake ecosystems . It provides good habitat for many aquatic invertebrates and cover for young fish and amphibians. Waterfowl, especially ducks, as well as beaver, muskrat and aquatic turtles eat this plant. It

225-515: Was formed by the Salzach-Saalach Glacier. When it retreated the glacier left behind thick sheets of morainic debris about 10,000 years ago that extend from the Zeller See in the north to just in front of Saalfelden, roughly by the Kühbichl (875 m). In the post-glacial period, the Saalach flowed into the Zeller See and then into the Salzach river to the south. The drift deposits from

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