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| &nbps; | Colonies of cyanobacteria on the soil surface | Biological soil crust and eplitic lichen on stone | Biological soil crust with cyanobacteria and moss |
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| &nbps; | Biological soil crust with cyanobacteria and lichen | Poa sp. plants with biological Soil crust | Lichen crust |
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| &nbps; | Biological soil crust with cyanobacteria and lichen | Crust at the peak of the growth | Biological crust with mosses and liveworts, the latter are Hypticae |