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・ Biological recording
・ Biological Records Centre
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・ Biological Research for Nursing
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Biological soil crust
・ Biological specificity
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・ Biological Survey of Panama
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・ Biological theories of dyslexia
・ Biological Theory (journal)
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Biological soil crust : ウィキペディア英語版
Biological soil crust

Biological soil crusts are communities of living organisms on the soil surface in arid- and semi-arid ecosystems. They are found throughout the world with varying species composition and cover depending on topography, soil characteristics, climate, plant community, microhabitats, and disturbance regimes. Biological soil crusts perform important ecological roles including carbon fixation, nitrogen fixation, soil stabilization, alter soil albedo and water relations, and affect germination and nutrient levels in vascular plants. They can be damaged by fire, recreational activity, grazing, and other disturbance and can require long time periods to recover composition and function. Biological soil crusts are also known as ''cryptogamic'', ''microbiotic'', ''microphytic'', or ''cryptobiotic'' soils.
==Natural History==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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