{"type":"Feature","properties":{"id":949,"name":"Lago di Tovel e la foresta sommersa","description":"

Nelle sue acque limpidissime si specchiano maestose le Dolomiti di Brenta<\/a>. Questo lago \u00e8 il pi\u00f9 frequentato del Parco, soprattutto d’estate, il pi\u00f9 grande delle Dolomiti di Brenta, per molti il pi\u00f9 bello, certamente il pi\u00f9 celebre. Fino al 1964, nelle calde giornate estive assumeva un acceso colore rosso. Tra le varie spiegazioni illustrate nel Centro Visitatori del Parco, c\u2019\u00e8 la leggenda della regina Tresenga, che nulla ha a che vedere con la scienza.<\/p>\n

In realt\u00e0, studi recenti hanno svelato che l\u2019arrossamento era dovuto a un organismo chiamato Tovellia sanguinea. Quest’alga tingeva le acque di un intenso colore rosso, soprattutto nella Baia Rossa del lago.<\/p>\n

Oggi la Tovellia vive ancora nel plancton del lago insieme ad altri organismi, ma in numero ridotto. Non abbastanza da tingerlo ancora di rosso. Nonostante le acqua fredde, il gelo invernale e la scarsit\u00e0 di sostanze nutritive, queste alghe riescono a compiere l\u2019intero ciclo vitale. Tra i pesci che popolano il lago troviamo sanguinerole, cobiti barbatello e salmerini alpini. Questi condividono l\u2019habitat con varie specie di rettili e anfibi, come le bisce d\u2019acqua (natrice dal collare e natrice tassellata), le rane di montagna e i rospi comuni.<\/p>\n

Il lago ha origini glaciali ma si \u00e8 ampliato in seguito ad una grande frana. Molto tempo fa, la frana ha sbarrato l\u2019emissario, ampliando il bacino e sommergendo cos\u00ec un\u2019antica foresta. A testimonianza di ci\u00f2, tronchi d\u2019albero sono ancora presenti sul fondo del lago.<\/p>\n

 <\/p>\n","modified":"2019-10-04T10:06:53","color":"","icon":"","noDetails":false,"noInteraction":false,"imageGallery":[{"src":"https:\/\/www.pnab.it\/wp-content\/uploads\/2018\/01\/8359-Lago-di-Tovel-768x576.jpg","id":1613,"caption":""},{"src":"https:\/\/www.pnab.it\/wp-content\/uploads\/2018\/01\/4205-Lago-di-Tovel-768x576.jpg","id":1633,"caption":"Lago di Tovel - foto Simon De Barba"},{"src":"https:\/\/www.pnab.it\/wp-content\/uploads\/2018\/01\/4151-Lago-di-Tovel-768x576.jpg","id":1631,"caption":""},{"src":"https:\/\/www.pnab.it\/wp-content\/uploads\/2018\/01\/8653-Lago-di-Tovel-768x1024.jpg","id":1615,"caption":"Lago di Tovel - foto Thomas Martini"},{"src":"https:\/\/www.pnab.it\/wp-content\/uploads\/2018\/01\/6659-Lago-di-Tovel-768x578.jpg","id":1611,"caption":""}],"image":"https:\/\/www.pnab.it\/wp-content\/uploads\/2017\/09\/2016-06-na-Lago-di-Tovel-foto-Flavio-Periotto-800x400-768x384.jpg","audio":null,"taxonomy":{"webmapp_category":[101,56]},"accessibility":{"mobility":{"check":false,"description":""},"hearing":{"check":false,"description":""},"vision":{"check":false,"description":""},"cognitive":{"check":false,"description":""},"food":{"check":false,"description":""}},"locale":"it","source":"https:\/\/www.pnab.it\/wp-json\/wp\/v2\/poi\/949","wp_edit":"http:\/\/www.pnab.it\/wp-admin\/post.php?post=949&action=edit","translations":{"en":{"id":33188,"name":"Lake Tovel and the submerged forest","web":"http:\/\/www.pnab.it\/en\/lake-tovel-and-the-submerged-forest\/","source":"https:\/\/www.pnab.it\/wp-json\/wp\/v2\/poi\/33188","description":"

The Brenta Dolomites are majestically reflected in its clear waters. This lake is the most popular of the Park, especially in summer, the largest of the Brenta Dolomites, for many the most beautiful, certainly the most famous. Until 1964, on hot summer days it took on a bright red color. Among the various explanations illustrated in the Visitor Center of the Park, there is the legend of Queen Tresenga, which has nothing to do with science.<\/p>\n

In fact, recent studies have revealed that the redness was due to an organism called Tovellia sanguinea. This alga dyed the waters of an intense red color, above all in the Red Bay of the lake.<\/p>\n

Today Tovellia still lives in the plankton of the lake together with other organisms, but in small numbers. Not enough to make it even red. Despite the cold water, the winter frost and the lack of nutrients, these algae are able to complete the entire life cycle. Among the fish that inhabit the lake we find minnows,stone loaches and alpine chars. These share the habitat with various species of reptiles and amphibians, such as water snakes (dice and grass snakes), mountain frogs and common toads.<\/p>\n

The lake has glacial origins but expanded following a large landslide. Long ago, the landslide blocked the emissary, widening the basin and thus submerging an ancient forest. As evidence of this, tree trunks are still present at the bottom of the lake.<\/p>\n"},"de":{"id":35521,"name":"See von Tovel und der versunkene Wald","web":"http:\/\/www.pnab.it\/de\/see-von-tovel-und-der-versunkene-wald\/","source":"https:\/\/www.pnab.it\/wp-json\/wp\/v2\/poi\/35521","description":"

In seinen reinen Gew\u00e4ssern spiegeln sich majest\u00e4tisch die Brenta Dolomiten<\/a>. Dieser See ist – vor allem im Sommer – der am besten besuchte im gesamten Park, gleichzeitig der gr\u00f6\u00dfte der Brenta Dolomiten, f\u00fcr viele auch der sch\u00f6nste, sicher aber der bekannteste. Bis ins Jahr 1964 nahm der See an warmen Sommertagen eine rote F\u00e4rbung an. Unter den vielen m\u00f6glichen Erkl\u00e4rungen, die im Besucherzentrum des Parks illustriert werden, ist auch die Legende der K\u00f6nigin Tresenga, welche nichts mit Wissenschaft zu tun hat.<\/p>\n

In Wahrheit haben k\u00fcrzliche Studien aber ergeben, dass die R\u00fctung auf einen Organismus mit dem Namen Tovellia Sanguinea zur\u00fcckzuf\u00fchren ist. Diese rote Alge h\u00fcllte den See einst in einen roten Schleier, vor allem in der Baia Rossa des Sees.<\/p>\n

Heute lebt die Tovellia immer noch im Plankton des Sees, gemeinsam mit anderen Organismen, aber in reduzierter Menge, sodass das Wasser dadurch nicht mehr rot gef\u00e4rbt werden kann. Trotz des kalten Wassers, des Eises im Winter sowie des Mangels an N\u00e4hrstoffen schaffen es diese Algen, ihren gesamten Lebenszyklus in diesem See zu verbringen. Unter den Fischen, welche den see bewohnen, findet man die Erlitze, die Bachschmerle sowie den Seesaibling. Diese bewohnen diesen Lebensraum gemeinsam mit verschiedenen Reptilien- und Amphibienarten, wie die Wassernatter (Ringelnatter und W\u00fcrfelnatter), der Grasfrosch sowie die Erdkr\u00f6te.<\/p>\n

Der See hat Gletscherwurzeln, wurde aber in Folge eines gro\u00dfen Erdrutsches vergr\u00f6\u00dfert. Vor langer Zeit hat die Mure den Abfluss verpserrt, wodurch das Becken vergr\u00f6\u00dfert wurde und dadurch einen antiken Wald \u00fcberschwemmte. Alte Baumst\u00e4mme, die immer noch auf dem Grund des liegen, zeugen heute noch davon.<\/p>\n

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