Publications by authors named "C Kroeze"
Article Synopsis
- Antibiotics are widely used in livestock, leading to environmental contamination of rivers and groundwater, yet there's insufficient data on their sources and distribution.
- A new model, MARINA-Antibiotics (China-1.0), estimates antibiotic flows from livestock into China's rivers and groundwater, revealing that antibiotic inputs reduced in rivers but increased in groundwater from 2010 to 2020.
- Key findings show fluoroquinolones are the main contributors to river pollution, while sulfonamides dominate groundwater pollution, indicating a need for improved strategies to address groundwater contamination due to livestock practices.
In the future, rivers may export more pollutants to coastal waters, driven by socio-economic development, increased material consumption, and climate change. However, existing scenarios often ignore multi-pollutant problems. Here, we aim to explore future trends in annual river exports of nutrients (nitrogen and phosphorus), plastics (macro and micro), and emerging contaminants (triclosan and diclofenac) at the sub-basin scale worldwide.
View Article and Find Full Text PDFUrban landscapes are high phosphorus (P) consumption areas and consequently generate substantial P-containing urban solid waste (domestic kitchen wastes, animal bones, and municipal sludge), due to large population. However, urbanization can also trap P through cultivated land loss and urban solid waste disposal. Trapped urban P is an overlooked and inaccessible P stock.
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- Excessive nitrogen deposition negatively impacts aquatic ecosystems globally, but the effectiveness of emissions controls on water pollution remains unclear.
- A study on nitrogen deposition in Chinese river basins shows that despite stricter acid gas emissions regulations from 2011 to 2019, nitrogen levels in rivers still increased by 3%, mainly due to indirect deposition from land.
- Coordinated efforts to control both acid gas and ammonia emissions could significantly reduce nitrogen input to water bodies by 2050, highlighting the crucial role of managing agricultural ammonia to protect aquatic environments.
Lake restoration usually focuses on reducing external nutrient sources. However, when sediments contain nutrients accumulated over multiple years, internal nutrient release can delay restoration progress. In lake restoration and management, it is important to understand the dynamic relationship between nutrient concentrations in a lake and internal and external nutrient sources.
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