Anthropogenic activities destabilized riverine bacterial communities by increasing synchrony between taxa

Liu, Lemian; Wang, Shanshan; Chen, Jianfeng

doi:10.1007/s00027-021-00818-3

Cited by 7 publications

(3 citation statements)

References 52 publications

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“…Currently, network topologies, such as the modularity (Hernandez et al, 2021), negative: positive cohesion (Adams et al, 2021), robustness (Yuan et al, 2021), connectivity (Wu et al, 2021), and nestedness (Thebault and Fontaine, 2010), are commonly used to evaluate the stability of communities in response to disturbance. We used the network modularity and negative:positive cohesion to estimate the stability of bacterial and fungal communities, which have been applied in predicting the networks stability of macro-and microbiomes (Hernandez et al, 2021;Liu et al, 2021). Communities with high modu-larity can limit the impacts of variation of a taxon to its module and tend to be stable (Dong et al, 2022).…”

Section: Network Construction and Analysismentioning

confidence: 99%

“…The is the probability that taxa i does interact with j, i.e., interactions within the same module. Communities with higher negative:positive cohesion can decrease the co-oscillation in communities and tend to be more stable (Liu et al, 2021).…”

Section: Network Construction and Analysismentioning

confidence: 99%

“…Communities with certain network topologies, such as higher modularity and greater negative:positive interactions between taxa, are affected less by species abundance fluctuations and extinctions, making community diversity and ecosystem functions persistent to environmental stress (Wu et al, 2021). Microbial communities can sacrifice some functions for survival and strengthen their capability in tolerating environmental stress (Hu et al, 2022), displaying compact and low compartmentalized (i.e., modularity) patterns under salinization (Liu et al, 2021). Microbial communities under salinization tend to share overlapping strategies and increase the proportion of the facilitative interactions between microbial taxa (Hou et al, 2020), which allow them to use complex organic carbon in gaining energy in order to attenuate the adverse effects of salinity stress.…”

Section: Introductionmentioning

confidence: 99%

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Soil salinization increases the stability of fungal not bacterial communities in the Taklamakan desert

et al. 2023

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Bacterial richness declined but fungal richness increased under salinization.• Bacteria did not become interactively compact or facilitative under salinization.• Fungi exhibited more compartmentalized and competitive patterns under salinization.• Fungal stability showed steeper increases under salinization than bacterial stability. Soil salinization is a typical environmental challenge in arid regions worldwide. Salinity stress increases plant convergent adaptations and facilitative interactions and thus destabilizes communities. Soil bacteria and fungi have smaller body mass than plants and are often efficient against soil salinization, but how the stability of bacterial and fungal communities change with a wide range of soil salinity gradient remains unclear. Here, we assessed the interactions within both bacterial and fungal communities along a soil salinity gradient in the Taklamakan desert to examine (i) whether the stability of bacterial and fungal communities decreased with soil salinity, and (ii) the stability of which community decreased more with soil salinity, bacteria or fungi. Our results showed that the species richness of soil fungi increased but that of soil bacteria decreased with increasing salinity in topsoils. Fungal communities became more stable under soil salinization, with increasing compartmentalization (i.e., modularity) and proportion of competitions (i.e., negative:positive cohesion) as salinity increased. Bacterial communities exhibited no changes in modularity with increasing salinity and smaller increases in negative:positive cohesion under soil salinization compared to fungal communities. Our results suggest that, by altering interspecific interactions, soil salinization increases the stability of fungal not bacterial communities in extreme environments.

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