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White, opaque but still it is full of life
On the one hand, the flora and fauna of the sodic lakes consist of the creatures specialized in sodic waters and requiring alkalinity on the other hand the creatures which are eurytopic (endure) against chemical reaction.
Seaweed plants do not live in the water of sodic lake despite of the water is very rich in plant nutritive due to the dropping of masses of bird. What is this so? In the white and highly opaque water the penetrating ability of the sunlight is so small that a couple of centimetres in depth the photosynthesis inhibitor darkness reigns. Only microscopic cyanobakteria and highly halophyte Euglenozoa species occurs here. These are the only organizations have the ability to produce organic matters by photosynthesis in the upper one or two cm layer of the water. They are the nutrition of the floating, species rich zooplankton and the unique lower crab/crustacea fauna which are clearly visible to naked eye as well. Some bird species directly consume the small crabs/crustacea by water filtering on the other hand the predatory lifestyle aquatic insects preys on them. The role of the aquatic insects and first of all the water-bugs is significant as well, in the exploitation of organic debris sinking to the bottom of the lake. At the end of the food chain as a consumer mainly the birds are the significant whereas the living conditions of fish and amphibians here are limited due to the high salinity. If for any reason the water of the lakes diluted with fresh water along with the high nutrient quantity the transparency of the water increases, the salt concentration decreases and they collectively favour the proliferation of plant life. In this case we can count on not only the multiplication of the algae (“algae bloom”) but the penetration of the salt marsh plants as the Bolboschoenus maritimus or the reed (Phragmites australis) and when they are in large quantities the valuable biocoenosis of the sodic lake permanently transforms.
Algae
 red bellied toad
Kép: unka
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