Eutrophication increases the similarity of cyanobacterial community features in lakes and reservoirs

Water Research, Journal Year: 2023, Volume and Issue: 250, P. 120977 - 120977

Published: Dec. 6, 2023

Language: Английский

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Mechanism and driving factors of phytoplankton community construction in the lower reaches of Yarlung Zangbo River

Journal of Lake Sciences, Journal Year: 2025, Volume and Issue: 37(1), P. 215 - 228

Published: Jan. 1, 2025

Language: Английский

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Spatiotemporal variations of plankton communities in different water bodies of the Yellow River: Structural characteristics, biogeographic patterns, environmental responses, and community assembly

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 640, P. 131702 - 131702

Published: July 21, 2024

Language: Английский

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The assembly mechanisms of algal community across different habitats mediated by sediment in the heavily sediment-laden Yellow River

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 631, P. 130825 - 130825

Published: Feb. 3, 2024

Language: Английский

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Assessment of Planktonic Community Diversity and Stability in Lakes and Reservoirs Based on eDNA Metabarcoding——A Case Study of Minghu National Wetland Park, China

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121025 - 121025

Published: Feb. 1, 2025

To evaluate the potential differences in plankton diversity and stability within freshwater lake reservoir ecosystems, this study employed eDNA metabarcoding to analyze diversity, assembly mechanisms, stability, environmental drivers of communities natural water (Y region) artificial (M at Liupanshui Minghu National Wetland Park, Guizhou Province, China. The revealed notable regional variations mechanisms. Specifically, Shannon, Simpson, Pielou's evenness indices were higher M region, suggesting a more complex species composition compared Y region. Analysis community mechanisms indicated that both regions influenced by combination stochastic deterministic processes, with processes serving as dominant driver. Through LEfSe analysis, Random Forest predictions, molecular ecological network evaluations, certain OTUs identified "dual-characteristic" consistently highlighted. These may play critical role shaping contributing stability. Environmental further clarified these differences. Redundancy analysis (RDA) demonstrated TDS was primary factor driving key zooplankton species, while EC DO significant factors influencing distribution phytoplankton species. Stability assessments, which combined coefficient variation population density, This indicates system has greater resistance disturbances findings provide fundamental support for assessing health aquatic well effective monitoring biodiversity conservation ecosystems.

Language: Английский

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Patterns of bacterial generalists and specialists in lakes and reservoirs along a latitudinal gradient

Global Ecology and Biogeography, Journal Year: 2023, Volume and Issue: 32(11), P. 2017 - 2032

Published: Sept. 6, 2023

Abstract Aim The geographical distribution of bacteria is an important, but poorly understood, topic in microbial ecology. A major question how broadly distributed generalist taxa, and limitedly specialist vary across a latitudinal gradient freshwater ecosystems. We predict that: (a) generalists specialists exhibit diversity with different patterns; (b) their community assemblies are mainly driven by stochastic processes; (c) coexist through niche differences, while fitness differences. Location Sixty lakes reservoirs China, ranging from 18° N to 50° N. Time Period July–August 2012 2018. Taxa Studied Bacterioplankton. Methods clustered zero‐radius operational taxonomic unit (zOTU) (subspecies‐like level) into (OTU) (species‐like calculated the intra‐specific variation spatial asynchrony OTU. examined relative effects environment versus space (latitude) on bacterial quantified assembly processes specialists, respectively. binary‐state speciation extinction (BiSSE) model has been used estimate evolutionary characteristics. abundances top zOTUs within each OTU were identified reveal preferences (distribution patterns at sites). Results found that had higher variation, greater wider width than specialists. With increasing latitude, decreased abundance variations occurrence Diversification was main driving factor both groups, though deterministic showed local communities. Bacterial coexisted whereas average Main Conclusions demonstrated distinct These results highlight differences biogeography taxa mediated emphasize distinctly vital roles differing mechanisms

Language: Английский

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Temporal variation of plankton and zoobenthos communities in a freshwater reservoir: Structure feature, construction mechanism, associated symbiosis and environmental response

Ecological Indicators, Journal Year: 2023, Volume and Issue: 154, P. 110774 - 110774

Published: Aug. 10, 2023

Phytoplankton, zooplankton and zoobenthos, due to their tiny size high reproductive efficiency, usually hold an essential position in freshwater reservoir biomes. Understanding community traits symbiosis mechanism is crucial for determining the nature of water ecological environment ecosystem's evolution. However, dynamics interspecific environmental interactions, as well community-building processes, are currently unclear. Here, structure feature, construction mechanism, associated response plankton zoobenthos communities were studied a reservoir. The features phytoplankton, zooplankton, varied significantly by season. Dispersal limitation played important role communities, influence degree decreased order. Phytoplankton showed stronger distance-decay similarity than while did not exhibit any discernible similarity. Co-existence network displayed primarily positive interactions between all year round (92.23% summer, 86.36% autumn, 100% winter 67.35% spring). Variation partitioning analyses that geographical variables had on distribution factors. Mantel test revealed diversity was with temperature, dissolved oxygen, nutrients N P. Temperature exhibited highest explanation rate seasonal variation phytoplankton (11.48%, p < 0.001) (16.22%, 0.001), according redundancy analysis. These findings provide thorough comprehension biological communities' dynamic equilibrium aquatic systems.

Language: Английский

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Tipping points of nitrogen use efficiency in freshwater phytoplankton along trophic state gradient

Water Research, Journal Year: 2023, Volume and Issue: 245, P. 120639 - 120639

Published: Sept. 16, 2023

Language: Английский

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Environmental Factors Affecting the Phytoplankton Composition in the Lake of Tibetan Plateau

Diversity, Journal Year: 2025, Volume and Issue: 17(1), P. 47 - 47

Published: Jan. 13, 2025

Due to the high altitude, unique geographical location, difficult accessibility and low temperature, environmental factors influencing phytoplankton composition have rarely been investigated in Selin Co Lake, which is largest lake Tibetan Plateau. Phytoplankton can indicate aquatic ecosystem conditions, may be sensitive In this study, we main that influence species Lake by analyzing spatial distribution applying statistical analyses. We also compared influential with other lakes around world. The results suggest eleven variables explain about 46.78% of phytoplankton’s composition. DO fluoride were most significant variables, followed arsenic COD, had comparatively smaller more insignificant influences on There five dominant namely, Microcystis sp., Navicula spp., Chlorella vulgaris, Ankistrodesmus falcatus, Westella sp. Some these found tropical lakes, suggesting community could adapt changes. A clear understanding affecting help us make proper water quality protection strategies future climate change scenarios.

Language: Английский

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Geographic distance shapes morphological and molecular disparities in a common diatom species as revealed by geometric morphometry and metabarcoding

Hydrobiologia, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Abstract Diatoms, a highly diverse group, are sensitive indicators of aquatic environmental conditions, yet doubts persist regarding species distribution and distance-based factors influencing their populations. This study explores the relationship between geographical distance morphological genetic differences among Achnanthidium minutissimum populations in freshwater ecosystems. Cell outlines were objectively captured by means geometric morphometry, whereas rbc L marker was used for molecular approach. Our results indicate that significantly influence disparities Despite absence evident physical barriers, persistent spatial contributes to observed differentiation diatom emphasizes crucial role isolation shaping divergence disparities, highlighting need consider understanding diversity distribution. Additionally, significance tools revealing hidden patterns exploring evolutionary dynamics within species.

Language: Английский

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