Trophic level plays an enhanced role in shaping microbiota structure and assembly in lakes with decreased salinity on the Qinghai-Tibet and Inner Mongolia Plateaus

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 923, P. 171316 - 171316

Published: Feb. 28, 2024

Language: Английский

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Environmental DNA metabarcoding revealing the distinct responses of phytoplankton and zooplankton to cascade dams along a river-way

Ecological Indicators, Journal Year: 2024, Volume and Issue: 166, P. 112545 - 112545

Published: Aug. 28, 2024

Language: Английский

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Microbial community dynamics in shallow-water grass-type lakes: Habitat succession of microbial ecological assembly and coexistence mechanisms

Ecotoxicology and Environmental Safety, Journal Year: 2025, Volume and Issue: 291, P. 117819 - 117819

Published: Feb. 1, 2025

Aggregation and co-occurrence patterns of microbial communities are the key scientific issues in lake ecology. To explore mechanisms ecological assembly community succession this unique habitat, 16 samples were collected from eight sites Wuliangsuhai Lake. Second-generation DNA sequencing was applied to reveal spatial dynamics bacterial structure distribution across two environmental media nutrient-rich shallow grassland elucidate characteristics network. This study also examined effects filtering biological interactions on formation maintenance composition diversity. The results highlight habitat heterogeneity composition, with no discernible latitudinal diversity patterns. causal analysis identified electrical conductivity, pH, total nitrogen, phosphorus as primary factors driving changes water sediment grass-type lakes, TN being driver. CL500-3 a pollution-tolerant species aquatic environments. g__norank_f_Verrucomicrobiaceae exhibited significant distance decay pattern, higher turnover rate than sediment. Co-occurrence network revealed greater complexity stability communities, three potential keystone species, water. neutral null model indicated that more susceptible dispersal limitation, whereas complex increased role deterministic processes construction. proposed division plant regions freshwater lakes demonstrated different types, contributing comprehensive understanding shallow-water structure.

Language: Английский

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Response mechanisms of eukaryotic plankton community structure to complex environmental conditions in semi-arid river basins, China

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 376, P. 124527 - 124527

Published: Feb. 16, 2025

Language: Английский

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Environmental Variability and its Impact on Phytoplankton Communities in Taiwan's Aogu Wetland

Water Air & Soil Pollution, Journal Year: 2025, Volume and Issue: 236(3)

Published: March 1, 2025

Language: Английский

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Annual Dynamics of Phytoplankton Communities in Relation to Environmental Factors in Saline–Alkaline Lakes of Northwest China

Diversity, Journal Year: 2025, Volume and Issue: 17(5), P. 328 - 328

Published: May 2, 2025

To evaluate the change trends of plankton in inland saline–alkaline water bodies, this study investigated ecological restoration and rational development lakes northwest China. From June to October 2023, phytoplankton communities a high-salinity lake Alar City, Xinjiang, were analyzed using standard survey methods for natural waters. Biodiversity indices calculated, redundancy analysis (RDA), Spearman’s correlation analysis, Mantel test carried out assess functional community structure its environmental drivers. In total, 115 taxa belonging seven phyla identified. The densities ranged from 23.76 × 105 53.54 107 cells/L. Bacillariophyta Cyanophyta dominant phyla, accounting 41.7% 27.8% total taxa, respectively. species included Microcystis spp., Merismopedia sp., Cyclotella meneghiniana, other algae. Spearman revealed that salinity, temperature (WT), Na+, TDS, HCO3−, Cl−, K+ key factors significantly influencing structure. tests confirmed salinity (SAL), DO, major ions (K+, CO32−) served as determinants spatiotemporal distribution (p < 0.05). RDA results indicated WT, alkalinity (ALK), pH, Na+ driving seasonal variations communities. Notably, decreasing ion concentrations stabilized structure, maintaining high-diversity indices. This highlights positive impact measures, such fisheries-based control systematic management, on health ecosystems. These findings provide important insights sustainable fisheries conservation aquatic biodiversity arid regions.

Language: Английский

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Development of an Algorithm for Semantic Segmentation of Earth Remote Sensing Data to Determine Phytoplankton Populations

Advanced Engineering Research (Rostov-on-Don), Journal Year: 2024, Volume and Issue: 24(3), P. 283 - 292

Published: Sept. 27, 2024

Introduction. Computer vision is widely used for semantic segmentation of Earth remote sensing (ERS) data. The method allows monitoring ecosystems, including aquatic ones. Algorithms that maintain the quality ERS images are in demand, specifically, to identify areas with phytoplankton, where water blooms— cause suffocation — possible. objective study create an algorithm processes satellite data as input information formation and checking mathematical models hydrodynamics, which monitor state bodies. Various algorithms described literature. New research focuses on enhancing reliability recognition often using neural networks. This approach modified presented work. To develop direction, a new set from open sources synthetic proposed. They aimed at improving generalization ability model. For first time, contour area phytoplankton population compared database thus boundary conditions formed implementation construction boundary-adaptive grids.Materials Methods. was supplemented author's augmentation Python. segmented populations images. U-Net convolutional network (CNN) trained basis NVIDIA Tesla T4 computing accelerators.Results. automate detection distribution areas, computer based CNN developed. model evaluated by calculated values main metrics related tasks. following metric were obtained: Precision = 0.89, Recall 0.88, F1 0.87, Dice IoU 0.79. Graphical visualization results learning training validation sets showed good learning. evidenced small changes loss function end training. performed turned out be close manual marking, indicated high proposed solution. region one pixel. result obtained original image 51202.5 (based about number pixels bloom blue-green algae). corresponding modeling 51312.Discussion Conclusion. expands theoretical practical knowledge use networks space imagery Given work, it possible assess potential automating process determine boundaries artificial intelligence. obtain contours due will provide creation databases environmental resources predictive hydrobiological processes.

Language: Английский

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Microbial and Planktonic Community Characteristics of Eriocheir sinensis Culture Ponds Experiencing Harmful Algal Blooms

Fishes, Journal Year: 2022, Volume and Issue: 7(4), P. 180 - 180

Published: July 22, 2022

The Chinese mitten crab, Eriocheir sinensis (H. Milne Edwards, 1853), is an economically important aquaculture species in China. It a significantly desirable by consumers that causes high demand for environmentally friendly culture farming. In aiming to break through bottlenecks, i.e., “pond moss” and cyanobacteria, we investigated the microbial community plankton composition of ponds with filamentous algae cyanobacterial blooms. As results, found Actinobacteria, Proteobacteria, Bacteroidetes were dominant bacterial phyla, while Chlorophyta Bacillariophyta phytoplankton phyla E. ponds. Nitrospira sp., Flectobacillus sp. BAB-3569, Staphylococcus warneri, Fusarium oxysporum, Gromochytrium mamkaevae, Rhizophydium JEL317 screened as bioindicators harmful algal We close relationship between water quality parameters bacteria zooplankton present study. Specifically, total nitrogen ammonia affected composition, phosphorus contributed composition. further indicated potential competitive inhibition Chlamydomonadales on direct regulation control Finally, suggested combination probiotics microalgae, e.g., C. vulgaris, prevent risks sinensis. conclusion, study deepened our understanding blooms baseline indications prevention

Language: Английский

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Estimation of hydrochemical profile and trophic status of a coastal Ramsar site in south west coast of India

Regional Studies in Marine Science, Journal Year: 2024, Volume and Issue: 78, P. 103740 - 103740

Published: Aug. 23, 2024

Language: Английский

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Cypermethrin insecticide residue, water quality and phytoplankton diversity in the lychee plantation catchment area

AIMS environmental science, Journal Year: 2023, Volume and Issue: 10(5), P. 609 - 627

Published: Jan. 1, 2023

<abstract> <p>Lychee plantation areas are typically located at varying elevations on mountains to ensure proper drainage. This placement has direct effects stream and river water flows consequently influences pesticide residue, quality aquatic biodiversity. research aims examine the relationships between cypermethrin phytoplankton diversity in lychee catchment area Phayao Province, Thailand, from January May 2022. The study was divided into six sampling sites. Water samples were collected for investigation of residual, physicochemical biological parameters. index used as an overall measurement quality. also examined species relationship among studied using canonical correspondence analysis. findings revealed increasing trend with maximum concentration reaching 29.43 mg/L March. decreasing scores Station S1 S5 indicated influence land use changes human activities, especially community (S5), which characterized by deterioration A total 174 categorized 5 divisions, Chlorophyta accounting 61.49% total, followed Bacillariophyta (28.16%) Cyanophyta (6.32%). highest Shannon's evenness observed Stations S3 S4, respectively. analysis interesting ammonia nitrogen, chlorophyll a three algal species: <italic>Pediastrum simplex</italic> var. <italic>echinulatum</italic>, duplex</italic> <italic>duplex</italic> <italic>Scenedesmus acutus</italic> S3. implies that residue have impact distribution, illustrating environmental challenges occur various geographical areas. information can be applied assist development future sustainable management initiatives.</p> </abstract>

Language: Английский

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