Structure of bacterial and eukaryote communities reflect in situ controls on community assembly in a high-alpine lake

Gendron, Eli M. S.; Darcy, John L.; Hell, Katherinia; Schmidt, Steven K.

doi:10.1007/s12275-019-8668-8

Cited by 12 publications

(5 citation statements)

References 87 publications

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“…Likewise, phytoplankton in the lakes of Inner Mongolia Plateau have also been reported to be influenced by stochastic processes (Changqing 2022). Similar results have also been obtained in some alpine freshwater lakes in Europe and North America (Gendron et al 2019;Monchamp et al 2019). The contribution of deterministic processes in eukaryotic phytoplankton community assembly increased with increasing salinity, similar to that reported by Changqing (2022).…”

Section: Discussionsupporting

confidence: 89%

Lakes-scale pattern of eukaryotic phytoplankton diversity and assembly process shaped by environmental gradients in central Qinghai-Tibet Plateau

Zhu

Xiong

Liu

2023

Preprint

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Phytoplankton are the main primary producers in aquatic ecosystems and play an important role in food web and geochemical cycles. Its diversity, community structure, and assembly process are influenced by several factors. Among these factors, climate change and human synergistic changes in water physicochemical factors and nutrient levels are the main causes. Alpine lake ecosystems are relatively weak and extremely sensitive to global climate change. However, the impact of climate change on phytoplankton in Qinghai-Tibet Plateau (QTP) lakes and their responses are still unclear. In this study, we systematically analyzed the diversity, environmental drivers, and assembly process of phytoplankton community in the central QTP lakes. The phytoplankton of these lakes can be primarily distinguished into freshwater and brackish types, with significant differences in species diversity and community dissimilarity. Both types shared nearly same key environmental factors that significantly affecting phytoplankton such as EC, and brackish lakes were also positively correlative with TN, Ca and Si. Stochastic process was predominant in phytoplankton assembly because of the harsh environmental condition. Additionally, freshwater and brackish lakes were dominated by dispersal limitation and heterogeneous selection respectively. Alpine lakes had significant EC thresholds, and their diversity and assembly processes changed significantly around the thresholds. Owing to warming and moistening of QTP during the past decades, some significant changes have occurred, such as gradual decrease in lake EC. The present findings have important implications for understanding and predicting the response of lake phytoplankton communities to climate change and for making decisions to protect the ecological resources of alpine lakes.

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Section: Discussionsupporting

confidence: 89%

Lakes-scale pattern of eukaryotic phytoplankton diversity and assembly process shaped by environmental gradients in central Qinghai-Tibet Plateau

Zhu

Xiong

Liu

2023

Preprint

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“…Likewise, phytoplankton in the lakes of Inner Mongolia Plateau have also been reported to be influenced by stochastic processes (Liu et al 2022 ). Similar results have also been obtained in some alpine freshwater lakes in Europe and North America (Gendron et al 2019 , Monchamp et al 2019 ). The contribution of deterministic processes in eukaryotic phytoplankton community assembly increased with increasing salinity, similar to that reported by Liu et al ( 2022 ).…”

Section: Discussionsupporting

confidence: 84%

Lakes-scale pattern of eukaryotic phytoplankton diversity and assembly process shaped by electrical conductivity in central Qinghai-Tibet Plateau

Zhu,

Xiong,

Liu

et al. 2023

FEMS Microbiology Ecology

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Phytoplankton are the main primary producers in aquatic ecosystems and play an important role in food web and geochemical cycles. Its diversity, community structure, and assembly process are influenced by several factors. Alpine lake ecosystems are relatively weak and extremely sensitive to global climate change. However, the impact of climate change on phytoplankton in Qinghai-Tibet Plateau lakes and their responses are still unclear. In this study, we analyzed the diversity, environmental drivers, and assembly process of phytoplankton community in the central QTP lakes. The phytoplankton of these lakes can be primarily distinguished into freshwater and brackish types, with significant differences in species diversity and community dissimilarity. Both shared nearly same key environmental factors that significantly affecting phytoplankton such as EC, and brackish lakes were also positively correlative with TN. Stochastic process was predominant in phytoplankton assembly. Additionally, freshwater and brackish lakes were dominated by dispersal limitation and heterogeneous selection respectively. Alpine lakes had significant EC thresholds, and their diversity and assembly processes changed significantly around the thresholds. The present findings have important implications for understanding and predicting the response of lake phytoplankton communities to climate change and for making decisions to protect the ecological resources of alpine lakes.

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“…The latter combines the positive feedback effect between abundance and occurrence, which could improve predictions and interpretations of patterns in biodiversity reacting to environmental change ( Lindh et al, 2017 ). The core sub-communities are composed of the dominant species that are widely distributed and play a key role in the cycle of elements ( Fuhrman, 2009 ; Pedrós-Alió, 2012 ), whereas the satellite sub-communities occur in low abundance and few locations and conduct specific metabolic functions, which constitute the seed bank of biodiversity ( Pester et al, 2010 ; Van Der Gast et al, 2011 ; Lindh et al, 2017 ; Gendron et al, 2019 ). Up to now, this classification has proved to be a useful tool for understanding ecological principles of microorganisms, and has been applied in marine ( Lindh et al, 2017 ) and rivers ( Hu et al, 2017b ) ecosystems, but has only infrequently been implemented in lake ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Community Assembly and Co-occurrence Patterns Underlying the Core and Satellite Bacterial Sub-communities in the Tibetan Lakes

Deng

Wang

et al. 2021

Front. Microbiol.

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Microbial communities normally comprise a few core species and large numbers of satellite species. These two sub-communities have different ecological and functional roles in natural environments, but knowledge on the assembly processes and co-occurrence patterns of the core and satellite species in Tibetan lakes is still sparse. Here, we investigated the ecological processes and co-occurrence relationships of the core and satellite bacterial sub-communities in the Tibetan lakes via 454 sequencing of 16S rRNA gene. Our studies indicated that the core and satellite bacterial sub-communities have similar dominant phyla (Proteobacteria, Bacteroidetes, and Actinobacteria). But the core sub-communities were less diverse and exhibited a stronger distance-decay relationship than the satellite sub-communities. In addition, topological properties of nodes in the network demonstrated that the core sub-communities had more complex and stable co-occurrence associations and were primarily driven by stochastic processes (58.19%). By contrast, the satellite sub-communities were mainly governed by deterministic processes (62.17%). Overall, this study demonstrated the differences in the core and satellite sub-community assembly and network stability, suggesting the importance of considering species traits to understand the biogeographic distribution of bacterial communities in high-altitude lakes.

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Structure of bacterial and eukaryote communities reflect in situ controls on community assembly in a high-alpine lake

Cited by 12 publications

References 87 publications

Lakes-scale pattern of eukaryotic phytoplankton diversity and assembly process shaped by environmental gradients in central Qinghai-Tibet Plateau

Lakes-scale pattern of eukaryotic phytoplankton diversity and assembly process shaped by environmental gradients in central Qinghai-Tibet Plateau

Lakes-scale pattern of eukaryotic phytoplankton diversity and assembly process shaped by electrical conductivity in central Qinghai-Tibet Plateau

Community Assembly and Co-occurrence Patterns Underlying the Core and Satellite Bacterial Sub-communities in the Tibetan Lakes

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