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Bacteria and Non-lichenized Fungi Within Biological Soil Crusts

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Biological Soil Crusts: An Organizing Principle in Drylands

Part of the book series: Ecological Studies ((ECOLSTUD,volume 226))

Abstract

Biological soil crusts (biocrusts) are found in a broad range of climatic zones as components of open vegetation. In addition to photosynthetically active and N-fixing Cyanobacteria, heterotrophic bacteria and fungi are integral components of biocrusts. In this chapter, we present an overview of the diversity and interactions of fungi and bacteria. Both can occur “free-living” or in tight associations. Lichen symbioses, which frequently form a dominating aspect of biocrusts, tend to be a particular hotspot of complex bacterial and fungal interactions. Biocrust lichens can be colonized by other fungi or by other lichens, and they represent a particularly rich habitat for bacterial communities as shown by recent research results. Nevertheless, metabolic details and the regulatory principle of fungal and bacterial dynamics remain largely unclear and are in need of refined analysis. According to present data, biocrust bacteria and fungi seem to be widespread, diverse, and capable of withstanding the harsh and fluctuating conditions of biocrust habitats as long as stability of soil is warranted.

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Maier, S., Muggia, L., Kuske, C.R., Grube, M. (2016). Bacteria and Non-lichenized Fungi Within Biological Soil Crusts. In: Weber, B., Büdel, B., Belnap, J. (eds) Biological Soil Crusts: An Organizing Principle in Drylands. Ecological Studies, vol 226. Springer, Cham. https://doi.org/10.1007/978-3-319-30214-0_5

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