We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
A Meta-analysis of Microplastic Pollution in Poyang Lake: Particle Size Dynamics, Polymer-Specific Risks and Ecological Threats to the Endangered Yangtze Finless Porpoise
AI summary Read the abstract
Researchers conducted a meta-analysis of 42 studies on microplastic pollution in China's Poyang Lake, finding polypropylene and polyethylene dominate at 68% of particles, with seasonal floods redistributing fine plastics into critical habitat zones for the endangered Yangtze finless porpoise.
This study conducts a systematic meta-analysis of 42 peer-reviewed studies (2016–2022), integrating datasets under ISO 21960:2020 protocols, to assess microplastic (MP) pollution in Poyang Lake and its ecological risks to the endangered Yangtze finless porpoise (YFP). Results show that small particles (< 1 mm) dominate surface waters (72%), while sediments display bimodal peaks at both fine (< 300 µm) and larger (1–2 mm) sizes. Polypropylene (PP, 37.6%) and polyethylene (PE, 30.8%) are the most common polymers, primarily sourced from fishing, agriculture, and industry. Seasonal floods redistribute MPs into porpoise habitats, where hydrodynamic modeling indicates fine MPs (< 0.3 mm) remain suspended longer, increasing their bioavailability and trophic transfer risk. High-risk porpoise zones overlap with PP/PE hotspots and flood-driven deposition areas. By combining polymer-source fingerprints, ISO-standard harmonization, hydrodynamic transport modeling, and trophic transfer pathways, this meta-analysis advances freshwater MP risk assessment and provides targeted management strategies for porpoise conservation.
More Papers Like This
Beyond Particle Counts: Mass-Based Microplastic Risk Assessment in Urban Freshwater Reveals PVC-Dominated Ecological Threats in China’s Qiantang River
AI summary Read the abstract
Researchers assessed microplastic pollution in China's Qiantang River using both particle counting and mass-based methods, finding that PVC dominated total microplastic mass despite lower particle counts, and that its high toxicity placed ecological risk at the most severe level requiring urgent regulatory action.
Micro/nanoplastics in Aquatic Ecosystems: An Integrated Review of Occurrence, Toxicological Implications, Case Studies, Methodologies, and Future Recommendations
AI summary Read the abstract
This integrated review covers the occurrence, toxicology, and detection of micro- and nanoplastics across freshwater, marine, and estuarine ecosystems, using case studies to illustrate biomagnification through aquatic food webs and the compounding risk from co-occurring chemical contaminants. The review calls for stronger international collaboration and policy frameworks grounded in scientific evidence, recognizing that the pervasive nature of micro- and nanoplastics in aquatic systems poses escalating risks to both ecosystem integrity and human health.
Occurrence and Distribution Characteristics of Microplastics in Surface Water of China: a Review
AI summary Read the abstract
Researchers synthesized the literature on microplastic occurrence and distribution in Chinese surface waters, finding mean river concentrations ranging from 0.57 to 930 particles per liter, with fibers and sub-millimeter particles predominating and polypropylene and polyethylene as the most common polymers. As Chinese cities increasingly rely on surface water as drinking water sources, the high and variable microplastic loads documented across river and lake systems represent a direct human exposure pathway demanding stronger pollution monitoring and control.
Microplastic Pollution in Aquatic Ecosystems: A Comparative Review of Sources, Impacts, and Management in Marine and Freshwater Habitats
AI summary Read the abstract
This comparative review synthesized research on microplastic sources, distribution, and impacts across marine and freshwater environments, highlighting microbeads and polymer fragmentation as primary contamination drivers. Establishing a unified understanding of microplastic behavior across aquatic habitats is essential for designing monitoring frameworks that track human exposure through drinking water and seafood.
Distribution and Risk Assessment of Microplastics in the Basin of the Pearl River, China
AI summary Read the abstract
Sampling along the entire length of China's Pearl River revealed microplastics throughout, with concentrations highest near the river's origin and estuary and the toxic polymer PMMA dominant in upstream sections. Rivers act as highways carrying land-based plastic pollution to the ocean, and the presence of highly toxic PMMA raises ecological risk concerns even where overall particle counts appear relatively low.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.