Journal
GLOBAL ECOLOGY AND CONSERVATION
Volume 26, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.gecco.2021.e01452
Keywords
Dispersal; Disturbance; Grassland; Microbial diversity; Migration; Stochastic process
Categories
Funding
- National Key Research and Development Program [2016YFC0500702]
- National Natural Science Foundation of China [32071547]
- Top Notch Young Talents Program
- Science and Technology Innovation Project of Chinese Academy of Agricultural Sciences
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The study revealed that different anthropogenic disturbances consistently restrain the role of migration in soil bacterial community assembly, limiting the random dispersal of soil microorganisms.
Random migration often plays important roles in soil microbial community assembly. However, it remains unexplored that whether its role is affected by anthropogenic disturbances, and whether the effects of different disturbances are consistent. Here, we report a novel and general pattern that different disturbances consistently restrain the role of migration in soil bacterial community assembly. We mimicked 16 types of anthropogenic disturbances relevant to a Eurasian steppe ecosystem, including removing different number of plant functional groups, mowing, adding nitrogen, adding phosphorus, watering, warming, and some of their combinations. The estimated migration rates in soil bacterial community assembly with Stephen Hubbell?s neutral model decreased by 0.19 e6.29% under these disturbances. The relative change in migration rate was correlated with the deterministic change in community composition and the relative change in soil pH. Our results suggested that the intensifying anthropogenic disturbances may restrain the random dispersal, colonization and distribution of soil microorganisms. ? 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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