Environmental selection overturns the decay relationship of soil prokaryotic community over geographic distance across grassland biotas.

ABSTRACT: Though being fundamental to global diversity distribution, little is known about the geographic pattern of soil microorganisms across different biotas on a large scale. Here, we investigated soil prokaryotic communities from Chinese northern grasslands on a scale up to 4000 km in both alpine and temperate biotas. Prokaryotic similarities increased over geographic distance after tipping points of 1760-1920 km, generating a significant U-shape pattern. Such pattern was likely due to decreased disparities in environmental heterogeneity over geographic distance when across biotas, supported by three lines of evidences: (1) prokaryotic similarities still decreased with the environmental distance, (2) environmental selection dominated prokaryotic assembly, and (3) short-term environmental hetero

SUBMITTER: Zhang B 

PROVIDER: S-EPMC8828049 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature