Trip to lake Seliger
On the June long weekend with a group of friends went to lake Seliger and its surroundings - the upper lake. The weather was not too good - mostly it…

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The Orenburg-Moscow: tickets on salt lake
The issue of work recreational areas have already been addressed in many regions of Russia. Of course, most of these areas are located in the SFD and NCFD, as there…

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cyanobacteria

Thank you for the warming: the most northerly lake comes back to life

Lake Kaffeklubben (detsk. Kaffeklubben Sø, 83 37′) is a small (48 ha) of the eponymous island, North of Greenland, only 707 km from the pole. This is the most Northern lake on the Earth.

For a long time scientists argued about whether to receive life in such places, the impulse to reproduce as a result of nitrate pollution, or make her stop the impending effects of global warming. It seems that an international group of researchers under the guidance of Bianca Perren of the University of Franche-comté (France) managed to answer this question.

Despite the harsh living conditions, once the lake was full Kaffeklubben life in the face of cyanobacteria. The ice over the lake while constant, varying only the thickness. But even under 1-2 m of ice cyanobacteria survive. However, they are most active in summer when the air temperature above the ice reservoir is as high as +1,6 C. But more complex forms of life here. But now, but once…

3 500 years ago, when the lake had just been formed, it occupied several species of diatoms. But, according to studies of lake cores, which the authors said in the journal Geology, about 2 400 years ago, as the local temperature, the population is entirely extinct. Usually, to return, Continue reading