HISTORICAL ARCHAEOLOGY
·
2024
·
IF 0.4
Ryzewski Krysta
Hamtramck, a small, century-old city completely enveloped by Detroit, is promoted by its leadership as “the world in 2.1 square miles.” This slogan invokes two inextricable facets of the city’s heritage and contemporary identity: Hamtramck’s longstanding reputation as a proud, working-class city that has always been welcoming to immigrants, and its significance as the former home of automotive manufacturer Dodge Main, whose operations between 1910 and 1979 positioned the city as a global industrial powerhouse. The Old Hamtramck Center Project combines historical, archaeological, and geospatial sources of data to examine the process of urban expansion in the new city, which included the dissonant relationships among local communities and the built environment. Archaeological investigations within Old Hamtramck Center consider how the city’s residents experienced the often inconsistent circumstances of rapid urbanization and civic organization as the rural village transformed into a crowded industrial city during the early 20th century.
研究领域:
考古学
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城市研究
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历史学
✓ 已验证
DOI
高影响因子
Water
·
2020
·Vol. 12
·期 1
·281
·
IF 2.544
Song Zhang,Xun-Wen Chen,Quanhui Ye,Zi-Ting Zhang,Si-Fang Kong,Chun Cao,Jun-Jian Wang
Urbanization is often accompanied by aquatic metal(loid) pollution, which is regulated by dissolved organic matter (DOM). However, the relationships between dissolved metal(loid) concentration and the bulk, chromophoric, and fluorescent DOM in black and odorous urban rivers are still poorly understood. Here, we investigated the dissolved metal(loid) concentrations of Zn, Cu, Cr, As, Pb, and Cd and their correlations with DOM-related parameters in water samples from a polluted urbanized watershed in Shenzhen, China. The results showed that the Zn and Cu concentrations in the mainstream and tributary exceeded the national standards, and the wastewater treatment plant (WWTP) was an important source, as indicated by the abrupt concentration increases downstream of the WWTP. The dissolved metal(loid) concentrations were not always significantly correlated with the dissolved organic carbon (DOC) concentration or the ultraviolet absorbance at 254 nm (UV254); however, they were more likely to be correlated with the maximum fluorescence intensity (Fmax) of protein-like fluorescent DOM components. A strong correlation between the Cu/DOC ratio and specific UV254(SUVA254) previously reported did not exist in the present study. Instead, the Cu/DOC ratio was positively correlated with the Fmax/DOC ratios for protein-like fluorescent DOM components. Our study highlights that protein-like fluorescent DOM may be more important than humic-like fluorescence DOM and chromophoric DOM in terms of interacting with dissolved metal(loid)s in black and odorous urban rivers.Keywords:dissolved metal(loid)s;dissolved organic matter;correlation analyses;spectroscopic characteristics;urbanized rivers
研究领域:
环境科学
·
生态学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2021
·
IF 9.028
Ruilong Li,Longji Zhu,Kai Yang,Hongzhe Li,Yong-Guan Zhu,Li Cui
Microplastics (MPs) are becoming ubiquitous in environments and viewed as carriers of antibiotic resistance genes (ARGs). Rivers connecting differently urbanized areas contribute a significant input of MPs and ARGs to the environment. However, a systematic study assessing the role of urbanization in shaping antibiotic resistome and mobilome in riverine MPs is lacking. Here, we conducted a large-scale study by placing five types of MPs (polyethylene, polypropylene, polystyrene, polyethylene-fiber, and polyethylene-fiber-polyethylene) into Beilun River with an urbanization gradient. A total of 314 ARGs and 57 mobile genetic elements (MGEs) were detected in MPs by high-throughput quantitative polymerase chain reaction (PCR). The ARGs in MPs showed a clear spatial distribution with the abundance increased by 2 orders of magnitude from rural to urban regions. A holistic analysis of 13 socioeconomic and environmental factors identified that urbanization predominantly contributed to both the abundance and potential MGE-mediated dissemination of ARGs in riverine MPs. Notably, MPs types were found to significantly affect the resistome and dissemination risk of ARGs, with polypropylene being the preferred substrates to acquire and spread ARGs. This work highlights the necessity of controlling MPs and ARGs pollution in urban areas and provides an important guide for the future usage and disposal of plastics.
研究领域:
环境科学
·
微生物学
·
生态毒理学
·
公共卫生
✓ 已验证
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Zhenzhen Jia,Qiuxin Liu,Jiatang Hu,Shiyu Li,Hujunjie Chen
Water hypoxia and metal pollution are commonly co-existed in urbanized estuaries. This study focuses on the effect of an extended dissolved oxygen (DO) full-life dynamics (86 days) on metal behavior across the sediment-water interface through laboratory microcosms from two typical zones in Pearl River Estuary. Combining our time-series results of concentrations and fluxes, it showed that Co, Ni, and Zn consistently presented a release-precipitation-release trajectory with an oxic-hypoxic-anoxic-reoxic transition, characterized with highly variable behavior in the hypoxic-anoxic hotmoments. In parallel, changing DO dynamics significantly activated a repartitioning process of Co, Ni, and Zn among several species and elevated their risk in sediments, promoting the formation of more labile species in the 0–10 mm hotspots, where metals sensitively responded. Over DO transition, metal cycling was tightly co-related with Fe, Mn, and S elements. It was found that Mn was dominated in low oxygen-hypoxic period, but switched to S and Fe in anoxic stage, limiting sustained metal liberation to overlying water. Enlarging this experiment to practice, released Zn fluxes from sediments in hypoxic summer could contribute about ∼2.0% to their stocks in water column, while increase to 20% (1 m bottom water) in highly-stratified zones. This study has certain significance in understanding the long-term metal behavior and fate in estuarine regions, even lakes and reservoirs.
研究领域:
环境科学
·
地球化学
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水生生态学
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污染生态学
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生物地球化学
·
环境毒理学
·
河口学
✓ 已验证
DOI
高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Longji Zhu,Ruilong Li,Kai Yang,Fei Xu,Chenshuo Lin,Qinglin Chen,Dong Zhu,Qian Sun,Yong-Guan Zhu,Li Cui
Microplastics (MPs) ubiquitous in environments promote the dissemination of antibiotic resistance genes (ARGs), threatening ecosystem safety and human health. However, quantitative assessments of the health risks of ARGs (HRA) in plastisphere and an in-depth exploration of their driving mechanisms are still lacking. Here, the microbiomes, ARGs, and community assembly processes of five types of MPs in an urbanizing watershed were systematically investigated. By fully considering the abundance, clinical availability, human pathogenicity, human accessibility, and mobility of 660 ARGs in plastisphere, the HRA on MPs were quantified and compared. Polyethylene had the highest HRA among the five MP types, and urbanization further increased its risk index. In addition to abiotic factors, more complex biotic factors have been shown to drive HRA in plastisphere. Specifically, dispersal limitation accounted for the increasing diversity and interaction of bacteria that determined HRA in plastisphere. Further analysis of metabolic functions indicated that a higher HRA was accompanied by decreased normal metabolic functions of plastisphere microbiota due to the higher fitness costs of ARGs. This study advances the quantitative surveillance of HRA in plastisphere and understanding of its driving mechanisms. This will be helpful for the management of both MPs and ARGs treatments for human health.
研究领域:
环境科学
·
微生物学
·
公共卫生
·
生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）