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What is a biocrust? A refined, contemporary definition for a broadening research community

dc.contributor.authorWeber, Bettina
dc.contributor.authorBelnap, Jayne
dc.contributor.authorBudel, Burkhard
dc.contributor.authorAntoninka, Anita J
dc.contributor.authorBarger, Nichole N.
dc.contributor.authorChaudhary, Veer Bala
dc.contributor.authorDarrouzet-Nardi, Anthony
dc.contributor.authorEldridge, David J.
dc.contributor.authorFaist, Akasha M.
dc.contributor.authorFerrenberg, Scott
dc.contributor.authorHavrilla, Caroline A.
dc.contributor.authorHuber-Sannwald, Elisabeth
dc.contributor.authorMalam Issa, Oumarou
dc.contributor.authorMaestre, Fernando T
dc.contributor.authorReed, Sasha C.
dc.contributor.authorRodríguez Caballero, Emilio
dc.contributor.authorTucker, Colin
dc.contributor.authorYoung, Kristina E.
dc.contributor.authorZhang, Yuanming
dc.contributor.authorZhao, Yunge
dc.contributor.authorZhou, Xiaobing
dc.contributor.authorBowker, Matthew A.;
dc.identifier.citationWeber, B., Belnap, J., Büdel, B., Antoninka, A.J., Barger, N.N., Chaudhary, V.B., Darrouzet-Nardi, A., Eldridge, D.J., Faist, A.M., Ferrenberg, S., Havrilla, C.A., Huber-Sannwald, E., Malam Issa, O., Maestre, F.T., Reed, S.C., Rodriguez-Caballero, E., Tucker, C., Young, K.E., Zhang, Y., Zhao, Y., Zhou, X. and Bowker, M.A. (2022), What is a biocrust? A refined, contemporary definition for a broadening research community. Biol Rev, 97: 1768-1785.
dc.description.abstract"Studies of biological soil crusts (biocrusts) have proliferated over the last few decades. The biocrust literature has broadened, with more studies assessing and describing the function of a variety of biocrust communities in a broad range of biomes and habitats and across a large spectrum of disciplines, and also by the incorporation of biocrusts into global perspectives and biogeochemical models. As the number of biocrust researchers increases, along with the scope of soil communities defined as ‘biocrust’, it is worth asking whether we all share a clear, universal, and fully articulated definition of what constitutes a biocrust. In this review, we synthesize the literature with the views of new and experienced biocrust researchers, to provide a refined and fully elaborated definition of biocrusts. In doing so, we illustrate the ecological relevance and ecosystem services provided by them. We demonstrate that biocrusts are defined by four distinct elements: physical structure, functional characteristics, habitat, and taxonomic composition. We describe outgroups, which have some, but not all, of the characteristics necessary to be fully consistent with our definition and thus would not be considered biocrusts. We also summarize the wide variety of different types of communities that fall under our definition of biocrusts, in the process of highlighting their global distribution. Finally, we suggest the universal use of the Belnap, Büdel & Lange definition, with minor modifications: Biological soil crusts (biocrusts) result from an intimate association between soil particles and differing proportions of photoautotrophic (e.g. cyanobacteria, algae, lichens, bryophytes) and heterotrophic (e.g. bacteria, fungi, archaea) organisms, which live within, or immediately on top of, the uppermost millimetres of soil. Soil particles are aggregated through the presence and activity of these often extremotolerant biota that desiccate regularly, and the resultant living crust covers the surface of the ground as a coherent layer. With this detailed definition of biocrusts, illustrating their ecological functions and widespread distribution, we hope to stimulate interest in biocrust research and inform various stakeholders (e.g. land managers, land users) on their overall importance to ecosystem and Earth system functioning."
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.subjectBiological soil crust
dc.subjectPhysical structure
dc.subject.classificationCIENCIAS DE LA VIDA
dc.titleWhat is a biocrust? A refined, contemporary definition for a broadening research community
dc.rights.accessAcceso Abierto

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