Distinct Assembly Mechanisms for Prokaryotic and Microeukaryotic Communities in the Water of Qinghai Lake

Han, Ming-Xian; Huang, Jiangen; Yang, Jian; Wang, Beichen; Sun, Xu Hua; Jiang, Hongchen

doi:10.1007/s12583-023-1812-8

Cited by 6 publications

(2 citation statements)

References 89 publications

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“…In lakes where eutrophication occurs frequently, different dominant populations compete with each other and undergo succession, and the mechanisms by which eutrophication occurs are always the result of the interaction of complex and environmental factors ( Han et al, 2023 ). Phytoplankton spatial processes and environmental factors are important ecological processes for community composition and biodiversity maintenance in biological assemblages ( Chase and Myers, 2011 ; Laland et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Investigation of phytoplankton community structure and formation mechanism: a case study of Lake Longhu in Jinjiang

Jiang,

Wang,

Huang

et al. 2023

Front. Microbiol.

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In order to explore the species composition, spatial distribution and relationship between the phytoplankton community and environmental factors in Lake Longhu, the phytoplankton community structures and environmental factors were investigated in July 2020. Clustering analysis (CA) and analysis of similarities (ANOSIM) were used to identify differences in phytoplankton community composition. Generalized additive model (GAM) and variance partitioning analysis (VPA) were further analyzed the contribution of spatial distribution and environmental factors in phytoplankton community composition. The critical environmental factors influencing phytoplankton community were identified using redundancy analysis (RDA). The results showed that a total of 68 species of phytoplankton were found in 7 phyla in Lake Longhu. Phytoplankton density ranged from 4.43 × 105 to 2.89 × 106 ind./L, with the average density of 2.56 × 106 ind./L; the biomass ranged from 0.58–71.28 mg/L, with the average biomass of 29.38 mg/L. Chlorophyta, Bacillariophyta and Cyanophyta contributed more to the total density, while Chlorophyta and Cryptophyta contributed more to the total biomass. The CA and ANOSIM analysis indicated that there were obvious differences in the spatial distribution of phytoplankton communities. The GAM and VPA analysis demonstrated that the phytoplankton community had obvious distance attenuation effect, and environmental factors had spatial autocorrelation phenomenon, which significantly affected the phytoplankton community construction. There were significant distance attenuation effects and spatial autocorrelation of environmental factors that together drove the composition and distribution of phytoplankton community structure. In addition, pH, water temperature, nitrate nitrogen, nitrite nitrogen and chemical oxygen demand were the main environmental factors affecting the composition of phytoplankton species in Lake Longhu.

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Section: Discussionmentioning

confidence: 99%

Investigation of phytoplankton community structure and formation mechanism: a case study of Lake Longhu in Jinjiang

Jiang,

Wang,

Huang

et al. 2023

Front. Microbiol.

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“…Deterministic processes mainly governed the assembly of microeukaryotic communities in estuarine, coastal, and marine ecosystems ( Wu et al, 2018 ; Zhu et al, 2021 ; Wu et al, 2023 ). However, in freshwater environments such as rivers and lakes, as well as surface ocean, microeukaryotic structure exhibited a pronounced influence of stochastic processes ( Chen et al, 2019 ; Logares et al, 2020 ; Ren et al, 2022 ; Han et al, 2023 ). Frequently, microeukaryotic communities seem to be regulated by a combination of both deterministic and stochastic processes ( Gad et al, 2020 ; Hou et al, 2020 ; Mo et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal assembly and functional composition of planktonic microeukaryotic communities along productivity gradients in a subtropical lake

Zou,

Lian,

et al. 2024

Front. Microbiol.

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Microeukaryotes play crucial roles in the microbial loop of freshwater ecosystems, functioning both as primary producers and bacterivorous consumers. However, understanding the assembly of microeukaryotic communities and their functional composition in freshwater lake ecosystems across diverse environmental gradients remains limited. Here, we utilized amplicon sequencing of 18S rRNA gene and multivariate statistical analyses to examine the spatiotemporal and biogeographical patterns of microeukaryotes in water columns (at depths of 0.5, 5, and 10 m) within a subtropical lake in eastern China, covering a 40 km distance during spring and autumn of 2022. Our results revealed that complex and diverse microeukaryotic communities were dominated by Chlorophyta (mainly Chlorophyceae), Fungi, Alveolata, Stramenopiles, and Cryptophyta lineages. Species richness was higher in autumn than in spring, forming significant hump-shaped relationships with chlorophyll a concentration (Chl-a, an indicator of phytoplankton biomass). Microeukaryotic communities exhibited significant seasonality and distance-decay patterns. By contrast, the effect of vertical depth was negligible. Stochastic processes mainly influenced the assembly of microeukaryotic communities, explaining 63, 67, and 55% of community variation for spring, autumn, and both seasons combined, respectively. Trait-based functional analysis revealed the prevalence of heterotrophic and phototrophic microeukaryotic plankton with a trade-off along N:P ratio, Chl-a, and dissolved oxygen (DO) gradients. Similarly, the mixotrophic proportions were significantly and positively correlated with Chl-a and DO concentrations. Overall, our findings may provide useful insights into the assembly patterns of microeukaryotes in lake ecosystem and how their functions respond to environmental changes.

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Deciphering assembly processes, network complexity and stability of potential pathogenic communities in two anthropogenic coastal regions of a highly urbanized estuary

Zhu,

Ma,

Wen

et al. 2024

Environmental Pollution

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Distinct Assembly Mechanisms for Prokaryotic and Microeukaryotic Communities in the Water of Qinghai Lake

Cited by 6 publications

References 89 publications

Investigation of phytoplankton community structure and formation mechanism: a case study of Lake Longhu in Jinjiang

Investigation of phytoplankton community structure and formation mechanism: a case study of Lake Longhu in Jinjiang

Spatiotemporal assembly and functional composition of planktonic microeukaryotic communities along productivity gradients in a subtropical lake

Deciphering assembly processes, network complexity and stability of potential pathogenic communities in two anthropogenic coastal regions of a highly urbanized estuary

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