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Although often inconspicuous, fungi occur in every environment on Earth and play very important roles in most ecosystems. Along with bacteria, fungi are the major decomposers in most terrestrial (and some aquatic) ecosystems, and therefore play a critical role in biogeochemical cycles [174] and in many food webs.
Therefore, in arid ecosystems where precipitation falls during the hot season, fungi are likely the most important contributors to nutrient cycling due to their tolerance to temperature and ability to persist during long dry periods. In several sites in the southwestern US, denitrification and nitrification were shown to be mostly carried out ...
Further reading on the role of arbuscular and ectomycorrhizal fungi in soil carbon storage and decomposition can be found in Zhu and Miller 2003, [37] Ekblad et al. 2013, [38] respectively, and the 2019 paper "Climatic controls of decomposition drive the global biogeography of forest-tree symbioses".
The mycorrhizal symbiosis between plants and fungi is fundamental to terrestrial ecosystems, with evolutionary origins before the colonization of land by plants. [17] In the mycorrhizal symbiosis, a plant and a fungus become physically linked to one another and establish an exchange of resources between one another.
These advances allow microbial and mycorrhizal ecologists to ask new and exciting questions about the ecological and evolutionary roles of arbuscular mycorrhizal (AM) fungi as individuals, in communities and ecosystems. Genetic analyses of AM fungi have been used to explore the genetic structure of single spores using multilocus genotyping, [87 ...
Ecosystem services provided by mycorrhizal fungi may depend on the soil microbiome. [66] Furthermore, mycorrhizal fungi was significantly correlated with soil physical variable, but only with water level and not with aggregate stability [ 67 ] [ 68 ] and can lead also to more resistant to the effects of drought.
Fungi are fundamental for life on earth in their roles as symbionts, e.g. in the form of mycorrhizae, insect symbionts, and lichens. Many fungi are able to break down complex organic biomolecules such as lignin, the more durable component of wood, and pollutants such as xenobiotics, petroleum, and polycyclic aromatic hydrocarbons.
The biological soil crust is an integral part of many arid and semi-arid ecosystems as an essential contributor to conditions such as dust control, water acquisition, and contributors of soil nutrients. Biocrust is poikilohydric and does not have the ability to maintain or regulate its own water retention. [14]