Effects of disturbance to moss biocrusts on soil nutrients, enzyme activities, and microbial communities in degraded karst landscapes in southwest China

Cheng, Cai; Gao, Min; Zhang, Yuandong; Long, Mingzhong; Wu, Yunjie; Li, Xiaona

doi:10.1016/j.soilbio.2020.108065

Cited by 67 publications

(37 citation statements)

References 46 publications

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“…An ecosystem contains a myriad of components that interact and affect each other in complex ways. Thus, the degradation of a few, or even just one component, could potentially change the state of others and lead to holistic ecosystem degradation (Moreno-Mateos et al , 2020, Cheng et al , 2021. Among ecosystem components, the microbial community is unique.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, the microbial community plays an irreplaceable role in decomposition, nutrient cycling, and regulation of above-ground community diversity and activity, therefore, degradation of the microbial community is a potential threat to related ecosystem functions and other ecosystem components (Berendsen et al , 2012).With rising awareness of the importance of the microbial community and increasingly mature methodology, research on ecosystem degradation related to microbial communities under climatic and anthropogenic stress have begun to receive increasing attention (Firestone, 2006, Hallet al , 2018. However, most microbial community degradation related research has been performed according to vegetation or soil degradation gradients, rather than according to microbial community degradation itself (Zhang et al , 2010, Cheng et al , 2021. These studies have also mainly focused on the effects that vegetation or soil degradation exert on the microbial community, either directly or indirectly, rather than the effects that microbial community degradation exerts on other ecosystem components (Zhang et al , 2010, Cheng et al , 2021).…”

Section: Introductionmentioning

confidence: 99%

“…However, most microbial community degradation related research has been performed according to vegetation or soil degradation gradients, rather than according to microbial community degradation itself (Zhang et al , 2010, Cheng et al , 2021. These studies have also mainly focused on the effects that vegetation or soil degradation exert on the microbial community, either directly or indirectly, rather than the effects that microbial community degradation exerts on other ecosystem components (Zhang et al , 2010, Cheng et al , 2021). Yet, due to the much higher reproduction rate of microbes than plants, the microbial community could have already passed through numerous generations and established new stages of succession before significant degradation of vegetation or soil is detected (Curtis, 2006, Konopka, 2006, Berendsen et al , 2012.…”

Section: Introductionmentioning

confidence: 99%

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Reduced interactivity during microbial community degradation lead to the extinction of Tricholomas matsutake

Zhou

Liu

et al. 2021

Preprint

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Ecosystem degradation is a process during which different ecosystem components interact and affect each other. The microbial community, as a component of the ecosystem whose members often display high reproduction rates, is more readily able to respond to environmental stress at the compositional and functional levels, thus potentially threatening other ecosystem components. However, very little research has been carried out on how microbial community degradation affects other ecosystem components, which hampers the comprehensive understanding of ecosystems as a whole. In this study, we investigated the variation in a soil microbial community through the extinction gradient of an ectomycorrhizal species (Tricholomas matsutake) and explored the relationship between microbial community degradation and ectomycorrhizal species extinction. The result showed that during degradation, the microbial community switched from an interactive state to a stress tolerance state, during which the interactivity of the microbial community decreased, and the reduced community interactions with T.matsutake marginalized it from a large central interactive module to a small peripheral module, eventually leading to its extinction. This study highlights the mechanisms of T.matsutake extinction due to the loss of soil microbial community interactivity, offering valuable information about soil microbial community degradation and the plant ectomycorrhizal species conservation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reduced interactivity during microbial community degradation lead to the extinction of Tricholomas matsutake

Zhou

Liu

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

mentioning

confidence: 99%

“…Zhang, Deng, et al, 2010;H.-H. Zhang, Tang, et al, 2010). These studies have also mainly focused on the effects that vegetation or soil degradation exert on the microbial community, either directly or indirectly, rather than the effects that microbial community degradation exerts on other ecosystem components (Cheng et al, 2021;B. Zhang, Deng, et al, 2010;H.-H. Zhang, Tang, et al, 2010).…”

mentioning

confidence: 99%

Reduced interactivity during microbial community degradation leads to the extinction of Tricholomas matsutake

Zhou

et al. 2021

Land Degrad Dev

View full text Add to dashboard Cite

Ecosystem degradation is a process during which different ecosystem components interact and affect each other. The microbial community, as a component of the ecosystem whose members often display high reproduction rates, is more readily able to respond to environmental stress at the compositional and functional levels, thus potentially threatening other ecosystem components. However, very little research has been carried out on how microbial community degradation affects other ecosystem components, which hampers the comprehensive understanding of ecosystems as a whole. In this study, we investigated the variation in a soil microbial community through the extinction gradient of an ectomycorrhizal species (Tricholomas matsutake) and explored the relationship between microbial community degradation and ectomycorrhizal species extinction. The result showed that during degradation, the microbial community switched from an interactive state to a stress tolerance state.During degradation, the interactivity of the microbial community decreased from average degree (avgK) 3.54 of undegraded state to 1.63 of degraded state, and the interactivity parameter was significantly related to T. matsutake dominance (R 2 = 0.953, p < 0.05). The reduced community interactions with T. matsutake marginalized it from a large central interactive module (67 nodes with 399 intra-module links and 86 inter-module links) to a small peripheral module (four nodes with three intramodule links and no inter-module links), eventually leading to its extinction. This study highlights the mechanisms of T. matsutake extinction due to the loss of soil microbial community interactivity, offering valuable information about soil microbial community degradation and the plant ectomycorrhizal species conservation.

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Effects of sand burial caused by ant nests on soil microbial biomass, basal respiration, and enzyme activity in/under biocrusts in vegetated areas of the Tennger Desert

et al. 2022

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Sand burial of crusts, caused by ant burrowing, is a common phenomenon in desert landscapes, yet the potential impacts on soil processes are unknown. Three sand burial depths, 3.0-5.0 mm (deep burial), 1.0-1.5 mm (shallow burial), and 0 mm (control) affecting two dominant biocrusts (viz., cyanobacteria-lichen crusts and moss crusts) sampled in the moist and dry seasons were selected to explore this issue in two vegetation areas of the Tennger Desert. We collected 180 samples from biocrust layers and topsoil to assess soil physicochemical properties, microbial biomass, basal respiration, and enzymes activities. The results showed that sand burial of crusts reduced soil microbial biomass, basal respiration, and enzyme activities, while deep burial caused a substantial decline in these parameters. Sand burial interfered with the biocrusts structure (e.g., rupture and flaking) and properties, subsequently causing soil-nutrient deprivation and soil microclimate deterioration. These are major mechanisms for decreasing soil microbial biomass, basal respiration, and enzyme activities.Moss crusts had significantly higher levels of the microbial parameters than cyanobacteria-lichen crusts following sand burial, indicating that biocrusts' tolerance to sand burial was synchronized with their progressive succession. In addition, soil microbial parameters were higher in natural vegetation areas than artificial vegetation areas following sand burial. Such observations suggest that high soil fertility could mitigate the negative effects of sand burial on soil processes. In conclusion, sand burial induces biocrust degradation and further disturbs surface soil processes in arid desert ecosystems.

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Effects of disturbance to moss biocrusts on soil nutrients, enzyme activities, and microbial communities in degraded karst landscapes in southwest China

Cited by 67 publications

References 46 publications

Reduced interactivity during microbial community degradation lead to the extinction of Tricholomas matsutake

Reduced interactivity during microbial community degradation lead to the extinction of Tricholomas matsutake

Reduced interactivity during microbial community degradation leads to the extinction of Tricholomas matsutake

Effects of sand burial caused by ant nests on soil microbial biomass, basal respiration, and enzyme activity in/under biocrusts in vegetated areas of the Tennger Desert

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