Biocrusts buffer against the accumulation of soil metallic nutrients induced by warming and rainfall reduction.

ABSTRACT: The availability of metallic nutrients in dryland soils, many of which are essential for the metabolism of soil organisms and vascular plants, may be altered due to climate change-driven increases in aridity. Biocrusts, soil surface communities dominated by lichens, bryophytes and cyanobacteria, are ecosystem engineers known to exert critical functions in dryland ecosystems. However, their role in regulating metallic nutrient availability under climate change is uncertain. Here, we evaluated whether well-developed biocrusts modulate metallic nutrient availability in response to 7 years of experimental warming and rainfall reduction in a Mediterranean dryland located in southeastern Spain. We found increases in the availability of K, Mg, Zn and Na under warming and rainfall exclusion. Howev

SUBMITTER: Moreno-Jimenez E 

PROVIDER: S-EPMC7314843 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature