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Bioturbation and its role in soil formation
Burešová, Andrea ; Frouz, Jan (advisor) ; Tajovský, Karel (referee)
Bioturbation in degradated soils can improve colonization of habitat by plants and fauna, which positively influence soil properties and improve the soil regeneration. Bad conditions dominate in habitats where bioturbation activity inhibiting this colonization, and soil degradation can be increased and affect the soil erosion. The absence of soil bioturbators is noticeable from soil micromorfology. To compare with stands, where soil bioturbators are present, here we will not find any biostructures and mixing of soil profile is minimal. The result is, alter alia, low amount of soil organic matter leading to higher competition for nutrients among units. In this thesis the main factor influencing present of soil ecosystem engineers, in this case earthworms,is clima. Comparimg soil micromorfology of four habitats placed on climatic gradient from east to west of USA can be inferred, which role play soil bioturbators in first five centimetres of soil. Was determine how soil structure is affected by their activity during three successional phases and which factors influence thein presence or absence. In conclusion, differences between climatic conditions lead to different succession of ecosystem,mainly composition of different species in the community. It leads to variable soil structure characteristic...
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Bioturbation and its role in soil formation
Burešová, Andrea ; Frouz, Jan (advisor) ; Tajovský, Karel (referee)
Bioturbation in degradated soils can improve colonization of habitat by plants and fauna, which positively influence soil properties and improve the soil regeneration. Bad conditions dominate in habitats where bioturbation activity inhibiting this colonization, and soil degradation can be increased and affect the soil erosion. The absence of soil bioturbators is noticeable from soil micromorfology. To compare with stands, where soil bioturbators are present, here we will not find any biostructures and mixing of soil profile is minimal. The result is, alter alia, low amount of soil organic matter leading to higher competition for nutrients among units. In this thesis the main factor influencing present of soil ecosystem engineers, in this case earthworms,is clima. Comparimg soil micromorfology of four habitats placed on climatic gradient from east to west of USA can be inferred, which role play soil bioturbators in first five centimetres of soil. Was determine how soil structure is affected by their activity during three successional phases and which factors influence thein presence or absence. In conclusion, differences between climatic conditions lead to different succession of ecosystem,mainly composition of different species in the community. It leads to variable soil structure characteristic...
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