Microbial network complexity drives non-linear shift in biodiversity-nutrient cycling in a saline urban reservoir

Mo, Yuanyuan; Feng, Peng; Gamfeldt, Lars; Xiao, Peng; Al, Mamun Abdullah; Yang, Jun

doi:10.1016/j.scitotenv.2022.158011

Cited by 12 publications

(13 citation statements)

References 53 publications

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“…Wang et al (2023) also demonstrated that the core microbiome may potentially provide critical functions to the arbuscular mycorrhizal fungi by promoting organic phosphorus mineralization. However, the beta diversity of satellite communities was more significantly related to multi-nutrient cycling than core communities in a subtropical urban reservoir (Mo et al, 2021). These results imply that core and satellite taxa play different roles in maintaining ecological function in different ecosystems.…”

Section: Introductionmentioning

confidence: 83%

“…Changes in water column stratification and mixing patterns, on the one hand, influence the nutrient release of the deep lake waters (Vachon et al, 2019). On the other hand, complete water mixing promotes the upwelling of nutrients from deep waters into the surface waters (Gao et al, 2021). This increase in nutrients can cause an increase in phytoplankton biomass or shifts in functional microbial abundance and community structure (French & Petticrew, 2007;Xue et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the core species represent a small fraction of taxonomic diversity with high abundances, while satellite species contribute to a large reservoir of microbial diversity and occur in low abundance. Core and satellite species show differences in response to environmental changes, for example, Mo et al (2021) found that core co-occurrence networks exhibited strong resistance as salinity increased, while satellite networks are prone to be affected by slight disturbances of salinity. Compared with satellite taxa, core taxa had wider niche breadths and could adapt to a wide range of environmental niches (Mo et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Core and satellite species show differences in response to environmental changes, for example, Mo et al (2021) found that core co-occurrence networks exhibited strong resistance as salinity increased, while satellite networks are prone to be affected by slight disturbances of salinity. Compared with satellite taxa, core taxa had wider niche breadths and could adapt to a wide range of environmental niches (Mo et al, 2021). Core taxa can play key roles in enhancing the community resistance of soil microbiome (Jiao et al, 2022b).…”

Section: Introductionmentioning

confidence: 99%

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Core taxa drive microeukaryotic community stability of a deep subtropical reservoir after complete mixing

Xue,

Chen,

Xiao

et al. 2023

Environ Microbiol Rep

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Microeukaryotes are key for predicting the change of ecosystem processes in the face of a disturbance. However, their vertical responses to multiple interconnected factors caused by water mixing remain unknown. Here, we conducted a 12‐month high‐frequency study to compare the impacts of mixing disturbances on microeukaryotic community structure and stability over different depths in a stratified reservoir. We demonstrate that core and satellite microeukaryotic compositions and interactions in surface waters were not resistant to water mixing, but significantly recovered. This was because the water temperature rebounded to the pre‐mixing level. Core microeukaryotes maintained community stability in surface waters with high recovery capacity after water mixing. In contrast, the changes in water temperature, chlorophyll‐a, and nutrients resulted in steep and prolonged variations in the bottom core and satellite microeukaryotic compositions and interactions. Under low environmental fluctuation, the recovery of microbial communities did not affect nutrient cycling in surface waters. Under high environmental fluctuation, core and satellite microeukaryotic compositions in bottom waters were significantly correlated with the multi‐nutrient cycling index. Our findings shed light on different mechanisms of plankton community resilience in reservoir ecosystems to a major disturbance over depths, highlighting the role of bottom microeukaryotes in nutrient cycling.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Core taxa drive microeukaryotic community stability of a deep subtropical reservoir after complete mixing

Xue,

Chen,

Xiao

et al. 2023

Environ Microbiol Rep

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“…Understanding how microbial life and death influence biogeochemistry as well as microbe trophic relationships and interactions with the surrounding environment is growing (Sokol et al, 2022). Many previous studies have explored microbial community dynamics and their co‐occurrence patterns based on total environmental DNA in reservoir ecosystems (Mo et al, 2022; Xue et al, 2022), whereas relic DNA has not yet been fully considered.…”

Section: Introductionmentioning

confidence: 99%

Relic DNA obscures DNA‐based profiling of multiple microbial taxonomic groups in a river‐reservoir ecosystem

Xue

Chen

et al. 2023

Molecular Ecology

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Numerous studies have investigated the spatiotemporal variability in water microbial communities, yet the effects of relic DNA on microbial community profiles, especially microeukaryotes, remain far from fully understood. Here, total and active bacterial and microeukaryotic community compositions were characterized using propidium monoazide (PMA) treatment coupled with high‐throughput sequencing in a river‐reservoir ecosystem. Beta diversity analysis showed a significant difference in community composition between both the PMA untreated and treated bacteria and microeukaryotes; however, the differentiating effect was much stronger for microeukaryotes. Relic DNA only resulted in underestimation of the relative abundances of Bacteroidota and Nitrospirota, while other bacterial taxa exhibited no significant changes. As for microeukaryotes, the relative abundances of some phytoplankton (e.g. Chlorophyta, Dinoflagellata and Ochrophyta) and fungi were greater after relic DNA removal, whereas Cercozoa and Ciliophora showed the opposite trend. Moreover, relic DNA removal weakened the size and complexity of cross‐trophic microbial networks and significantly changed the relationships between environmental factors and microeukaryotic community composition. However, there was no significant difference in the rates of temporal community turnover between the PMA untreated and treated samples for either bacteria or microeukaryotes. Overall, our results imply that the presence of relic DNA in waters can give misleading information of the active microbial community composition, co‐occurrence networks and their relationships with environmental conditions. More studies of the abundance, decay rate and functioning of nonviable DNA in freshwater ecosystems are highly recommended in the future.

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Joint regulation of the soil organic carbon accumulation by mineral protection and microbial properties following conservation practices

Han,

Chen,

Jia

et al. 2024

CATENA

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Microbial network complexity drives non-linear shift in biodiversity-nutrient cycling in a saline urban reservoir

Cited by 12 publications

References 53 publications

Core taxa drive microeukaryotic community stability of a deep subtropical reservoir after complete mixing

Core taxa drive microeukaryotic community stability of a deep subtropical reservoir after complete mixing

Relic DNA obscures DNA‐based profiling of multiple microbial taxonomic groups in a river‐reservoir ecosystem

Joint regulation of the soil organic carbon accumulation by mineral protection and microbial properties following conservation practices

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