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Spirogyra in Lake Baikal: Environmental Emergency. First-Hand Information

... rubles a year to maintain the 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 ...

Modified: 04.09.2014
ecology , Baikal , disaster , limnology , seaweed , cyanobacteria , Spirogyra , sponges , molluscs , water quality , phosphorus
Path: Главная / News
Living Fossils

... specific laws of speciation, at least among eukaryotes a certain species has existed, on average, several hundreds of thousands or millions of years, and then gives rise to a new one or goes extinct. In some groups of animals, especially protozoans or molluscs (for example, bivalves and gastropods, as well as ammonites), some mammals (for example, rodents), the rate of speciation is even higher. It is owing to the change of living forms that we notice how dynamically the image of the Earth’s organic ...

Modified: 30.05.2006
ancient organisms , Pygmalion , mosses , horse-tails , ginkgo biloba , nautilus , horseshoe crabs , molluscs , extinction
Path: Главная / Articles

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