![]() Flamingoes must exercise caution, however, because the lake can turn deadly even to them. This forbidding environment enables Lake Natron to serve millions of flamingoes as the ideal nursery would-be predators avoid the saline lake and leave young birds in peace. Volcanic ash from the Great Rift Valley has collected in local lake basins, creating a network of soda lakes hostile to most organisms. The salt crust changes over time, giving the lake a slightly different appearance each time it is photographed by astronauts or imaged by satellites. This image simulates natural color, showing where the salt-loving microorganisms have colored the lake’s salt crust red or pink. The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) flying on the Terra satellite captured this image on March 8, 2003. Spirulina, a blue-green algae with red pigments, passes its pigments along to the Lesser Flamingoes that feed on the algae and raise their young here. An endemic species of fish, the alkaline tilapia, lives along the edges of the hotspring inlets, and the lake actually derives its color from salt-loving microorganisms that thrive in its alkaline waters. This bright red lake is the world’s most caustic body of water, but not to everything. While this lake remains deadly to most, it is still a vital ecosystem.Lake Natron, in Africa’s Great Rift Valley, practically sends a warning with its color. ![]() The proposed construction of a hydroelectric plant on the Ewaso Ng’iro River and a soda ash plant on its shores threatens the lake’s salinity and the flamingos. If they spent any longer in the lake, they would have died.Ĭurrently, Lake Natron is under threat. It burned their eyes and skin, but they managed to drag themselves ashore. Everyone survived the crash but they were in the water unprotected. In 2007, a helicopter carrying a group of wildlife videographers wishing to get footage of the flamingos crashed into the lake. People have occasionally survived the lake’s potency. Lake Natron would have saved pharaonic embalmers a lot of work. The ancient Egyptians used sodium carbonate and bicarbonate in the mummification process. Photo: Shutterstockįor most humans, the lake’s qualities are more suitable for the dead than the living. ![]() The lake doesn’t quite have that instant effect. The graphically eerie positions looked like the finger of Medusa had really touched them. Wildlife photographer Nick Brandt made headlines in 2013 by staging photos of the mummified remains of the poor creatures around Lake Natron. They drown in the toxic potion, and their outsides and insides calcify. The mirror-like surface tricks them into diving into the red waters for food. Some alkaline tilapia (a member of the cichlid family) can sustain themselves in the cooler parts of the lake.īut to some wildlife, especially birds, Lake Natron can be a death trap. Somehow, a few species of fish, invertebrates, and algae manage to live in the lake. In Lake Natron, their pigment paints the water a striking red. Generally, cyanobacteria carry different pigments. The lake’s salinity has welcomed salt-consuming, halophilic microorganisms called cyanobacteria, which need photosynthesis to survive. Lake Natron’s deceptively glassy surface. Its average alkalinity is 10.5, its pH surpasses 12, and its water temperature ranges from 40˚ to 60˚C. This concentrated the trona (sodium sesquicarbonate dihydrate) and natron (hydrated sodium carbonate) in the leftover water, creating a highly toxic brine. ![]() Since the lake had no outflow and received irregular rainfall, it endured thousands of years of intense evaporation from the heat. During the Pleistocene period, a rare type of lava rich in sodium and potassium carbonates ran down the slopes of the Ol Doinyo Lengai volcano and into the lake. It’s fed by the Southern Ewaso Ng’iro River in Kenya. This shallow but wide lake is just three metres deep but 22km wide. Tanzania has no less than four alkaline lakes, but Lake Natron is the most famous. Lake Natron is a hypersaline and highly alkaline lake located in the eastern section of the volatile East African Rift. In North Tanzania, a unique inland lake turns wildlife to stone. That’s a legend, but a natural wonder in Africa today does just that. We all know about the Greek monster Medusa, whose deadly gaze turned men to stone.
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