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Ecological Crisis on Lake Baikal: Diagnosed by Scientists

By  Oleg A. Timoshkin ,  Valery V. Malnik ,  Maria V. Sakirko , and  Christian Boedeker Ecological crisis... A few years ago, one could not even imagine that these words would be written about Lake Baikal, the deepest and purest lake in the world, which is now on the UNESCO World Heritage list. The first sign of the ecological crisis on Baikal was the rampant proliferation of the atypical filamentous Spirogyra alga. According to limnology scientists, the cause of the disaster was not global warming...

Modified: 05.12.2015
Baikal , eutrophication , Spirogyra , algae , algal bloom , coastal zone , gastropods , sponges , sponge disease , ecological crisis , wastewater , wastewater treatment facilities
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Ecological Crisis on Lake Baikal: Diagnosed by Scientists

... scientists found even more alarming environmental phenomena—real cemeteries of gastropods that were confined to the areas of mass Spirogyra vegetation and those of the Severobaikalsk wastewater discharge and the mass disease and death of endemic Baikal sponges (depending on the dive area, the degree of damage to branching sponges was 30 to 100%). The endemic Baikal sponges Lubomirskiidae are unusual multicellular creatures; their green color is due to microalgae living in their cells. The Lubomirskiidae ...

Modified: 30.08.2015
Baikal , eutrophication , Spirogyra , algae , algal bloom , coastal zone , gastropods , sponges , sponge disease , ecological crisis , wastewater , wastewater treatment facilities
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Spirogyra in Lake Baikal: Environmental Emergency. First-Hand Information

... limnetic environment, so until recently Baikal was one of the cleanest lakes in the world. Nevertheless, now the lake is facing a real threat. It looks as huge piles of water grass rotting on the shore, the cemeteries of molluscs, and total death of sponges keeping the pristine purity of Baikal water Warning signs of the environmental problem began to come as early as in 2010. Three years later, an expedition of the Limnological Institute SB RAS (Irkutsk) discovered the proliferation of atypical ...

Modified: 04.09.2014
ecology , Baikal , disaster , limnology , seaweed , cyanobacteria , Spirogyra , sponges , molluscs , water quality , phosphorus
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MIR Dives. Notes from the Bottom of Lake Baikal

... “hands” are at work again. Gliding along the slope, we are moving towards the top of the Akademicheskiy Ridge. The pebbly slopes testify that millions of years ago this was dry land. A pleasant surprise is abundance of white and blue deepwater cortical sponges. The “hands” have managed to capture a few rocks with sponges – these will make the day of our colleague biologists. ...Time runs fast, and we should stop for lunch. Since the start of the dive it has become cooler inside the vehicle, so ...

Modified: 30.12.2009
MIR-1 , MIR-2 , gas hydrates , sponges , Baikal oilfish , Akademicheskiy Ridge
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Biosilica - Raw Material of the New Millennium

... treasure is not exhaustible resources of metals, but its unique plants and animals This living treasure is hidden in Lake Baikal, the world’s most ancient and deepest lake and Siberia’s pride. Among its most unusual inhabitants are freshwater sponges. Their first descriptions (Pallas, 1771; Georgi, 1775; Middendorf, 1867; Dybowski, 1880) made it clear that these animals represent a real treasure of nature and disclose basic enigmas of natural science. These sponges, referred to as “bodiaga” ...

Modified: 30.01.2006
sponges , spicules , silicatein , silica , Baikal , silicon , silicic acid
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Siberian "Freshwater Australia"

... the faunistic diversity of the unique lake ecosystem in a short article. We will consider only some most remarkable groups, which illustrate the whole spectrum of the classical problems concerned with the origin of unique diversity of Baikal fauna. Sponges Two families of sponges live in the lake: Spongillidae that include the species widely distributed almost worldwide and endemic inhabitants of open Baikal Lubomirskiidae . From the species perspective, freshwater sponges belong to a few species,...

Modified: 30.05.2004
Lake Baikal , fauna , sponges , Baikal sponges
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Mollusks that Live Exclusively in Lake Baikal

... special radular pouch. What does the diet of the Baikal gastropods consist of? It is necessary to note that tastes differ. Two species, Megalovalvata baicalensis and Kobeltocochlea martensiana , feed on debris that accumulates on the surface of green sponges. A large quantity of sponge spicules accidentally get into the snails’ stomachs, together with food in the form of various algae, mainly diatoms, as well as a small quantity of ciliates (protozoa). It is interesting to note that the relative ...

Modified: 30.05.2004
mollusks , species , gastropods , snails , sponges , shells , Lake Baikal
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