20 km from the Cape Verde Peninsula and 30 km from Dakar, capital of Senegal, is an amazing natural phenomenon — the Pink lake or Retba, as it is called representatives of the people Wolof, the main ethnic groups in the country. The size of a giant bowl with a bright pink water reaches up to 3 sq. km. the Maximum depth does not exceed 3 meters.
The name of the lake derives from the special color of the water, which ranges from light pink to brown. The reason for the unique color of the water is a large amount of cyanobacteria in the lake are ancient organisms that appeared on Earth 3.5 billion years ago. Surprisingly, except for them in this saturated salt solution no other organic life. The salt concentration in the lake Retba almost 1.5 times more than in the Dead sea – 380 grams per liter. Salt production takes place since 1970.
Now people extract the salt, standing to his neck in water, but 20 years ago the lake was moving without boats, the water level reached the belt. But because mining a huge amount of salt (about 25 thousand tons per year), the depth of the lake was rapidly increasing.
Every morning dozens of local men with the necessary equipment, floating in the middle of the lake and climb in very salty water. They break the salt deposits at the bottom Continue reading
12 September is celebrated as a regional holiday – Day of Baikal.
Day Baikal established in 1999, after turning the lake into the UNESCO world natural heritage site by UNESCO and has since been annually celebrated on the fourth Sunday of August.
Over time the festival has received nationwide and worldwide recognition.
In 2008 the decree of the Legislative Assembly of the Irkutsk region “About the day of Baikal in the Irkutsk region” the celebration was moved to the second Sunday of September .
In 2010, the celebration of the Day of Baikal will be held in 15 municipalities of the Irkutsk region. Unique lake will be dedicated, magazine and book exhibitions, quizzes, drawing contests, theatrical performances, environmental games. Baikalo-Lensky reserve will hold an open Day in the Museum and final outputs of the action “March of parks”. At the Institute of geography, Siberian branch of the Russian Academy of Sciences held a round table “Development of ecotourism in the Baikal natural territory”.
In Irkutsk on September 12 – on the Day of Baikal – scheduled meetings with scientists baicaliidae, thematic literary Playground “Poetry of Baikal”, a procession along the embankment of the Angara river, the results of the contest “Seven pearls of the Baikal region” Continue reading
The lake is very vulnerable, so they are difficult to maintain. But their condition is largely ignored, even if it gets worse
More than half of lakes and reservoirs on Earth threatened ecological catastrophe. But the world pays little attention. This will be examined at the International conference on monitoring ecological status of lakes.
The Commission of experts at a conference in Japan stated that lakes are polluted with agricultural fertilizers, waste industry and human activity, and increasing demand for water contributes to the drying up of lakes.
Some lakes are already in a catastrophic state. For example, the Aral Sea located in Central Asia between Uzbekistan and Kazakhstan. After the direction of rivers flowing into it was changed to 60 years for agricultural purposes, the lake area has decreased in two times.
Experts say that other large lakes are under threat of destruction. This is lake Victoria in Africa, lake Okeechobee in Florida and lake Baikal in Russia.
Lake in the UK, for example, suffer from congestion caused by tourism, while risk and ecological systems. Although lakes in industrialized and developing countries are in danger, only rich countries can find the resources to save them. This is the opinion of experts.
“The Continue reading