Graduate Thesis
Analyses the influence of free-ammonia gradients on microbial diversity and community assembly using high-throughput 16S rRNA sequencing and co-occurrence networks.
M.Sc. Candidate · Aquatic Microbial Ecology
Shengjie Sun
Master's student at Tianjin Agricultural University researching how freshwater microbial communities assemble and adapt under eutrophication stressors and ammonia gradients.
- Research Focus
- Community assembly of aquatic microorganisms, harmful algal bloom dynamics, and eutrophication assessment in plateau and urban waters.
- Methodological Strengths
- High-throughput 16S/18S rRNA sequencing, co-occurrence network construction, R/Linux workflows, and comprehensive water quality monitoring.
- Field Experience
- Extensive sampling across rivers, reservoirs, and plateau lakes with expertise in nutrient and dissolved organic matter analyses.
Education
Progressive training in aquaculture and hydrobiology at Tianjin Agricultural University.
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2021 - 2024
M.Sc. in Aquaculture
Tianjin Agricultural University · Thesis on microbial responses to ammonia gradients -
2019 - 2021
B.Sc. in Aquaculture
Tianjin Agricultural University · Core coursework in aquatic ecology and environmental biology -
2016 - 2019
Associate Degree in Aquaculture
Tianjin Agricultural University · Emphasis on fisheries biology and applied aquaculture
Research Outline
Exploring how microbial communities respond to nutrient enrichment, ammonia stress, and climatic variability to inform bloom mitigation.
Community Dynamics Study
Integrates 16S/18S rRNA datasets with network modelling to reveal temporal shifts in microbial interactions during bloom onset and relaxation periods.
Research Projects
Hands-on experience across national and municipal initiatives addressing eutrophication and water quality security.
“Three Waters” Eutrophication Control
Contributor for the Ministry of Ecology and Environment reserve program on coordinated eutrophication prevention in the Yinluan-to-Tianjin basin, covering sampling, laboratory analysis, and reporting.
Tianjin Urban Waters Monitoring Platform
Supports hyperspectral remote sensing development and early-warning management systems by coordinating instrumentation, sampling logistics, and data interpretation.
Selected Achievements
Representative outputs from recent publications, conference talks, and field campaigns.
Assembly process and co-occurrence network of microbial community in response to free ammonia gradient distribution.
Microbiology Spectrum, 12(9), e01051-24. Link
Temporal Dynamics and Adaptive Mechanisms of Microbial Communities: Divergent Responses and Network Interactions.
bioRxiv, 2024-08. Preprint · Molecular Ecology under review
Graduate Forum Presentation, 9th Cyanobacterial Bloom Conference.
Delivered talk titled “Dynamic responses and adaptive mechanisms of aquatic microbial communities” (Nov 2024, Graduate Forum).
Connect with Shengjie Sun
Open to collaboration on microbial ecology analytics, eutrophication assessment, and water-quality monitoring platforms.
Location
- Tianjin Agricultural University
- College of Fisheries · Tianjin, China