Article
Environmental Sciences
Qian Lu, Ziwei Jiang, Wenxuan Feng, Chunjing Yu, Fangzhi Jiang, Jiayue Huang, Jizhe Cui
Summary: Composting was found to be an effective method for the remediation of polycyclic aromatic hydrocarbons (PAHs) pollution. The co-composting of contaminated soil and cow manure resulted in a high degradation rate of Nap, Phe, and BaP. Cluster analysis identified polyphenol oxidase, laccase, and protease as important drivers of PAHs transformation. Additionally, composting significantly increased the content of humic substances, and the degradation mechanism of PAHs by microorganisms was inferred through phylogenetic investigation and network analysis.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Biotechnology & Applied Microbiology
Linlin Sun, Zhidong Tao, Xiaochen Liu, Zhansheng Wu
Summary: This study used phosphorus-solubilizing bacteria (PSB) to increase the effective phosphorus content in spent mushroom substrate (SMS) compost. The results showed that the PSB treatments had higher compost temperatures and higher levels of ammonium nitrogen and nitrate nitrogen. Inoculation with PSB also significantly increased the content of effective phosphorus, total phosphorus, and humus in the compost.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Environmental Sciences
Xiaoying Zhang, Tianshan Lan, Hongchen Jiang, Kexin Ye, Zhenxue Dai
Summary: This study evaluated the bacterial communities and their driven nitrogen cycling potential in sediments along the intertidal zone of Daya Bay, China. The results revealed the dominant nitrogen transformation processes at different tide levels and demonstrated the significant impact of environmental factors on the composition of bacterial communities. pH, salinity, and C/N ratio were identified as important factors shaping the bacterial community composition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Review
Microbiology
Victor M. Hernandez, Alejandra Arteaga, Michael F. Dunn
Summary: Arginase in bacteria plays crucial roles in nitrogen metabolism, stress resistance, and pathogenesis by hydrolyzing l-arginine to produce l-ornithine and urea. This review explores the regulation and functions of the arginase pathway, along with characteristics of related arginine catabolic pathways, emphasizing on the diverse physiological functions and biochemical features of arginases in different bacterial species.
FEMS MICROBIOLOGY REVIEWS
(2021)
Article
Environmental Sciences
Zhao-Jin Chen, Wei Tian, Ying-Jun Li, Le-Ni Sun, Yan Chen, Hao Zhang, Yu-Ying Li, Hui Han
Summary: This study found that four Miscanthus cultivars exhibited strong tolerance to high concentrations of Cd and showed good phytostabilization ability in Cd-contaminated soils. High-throughput sequencing analysis revealed that Cd stress reduced soil bacterial functions in the Miscanthus rhizosphere. The results provide a basis for Cd-contaminated soil remediation by Miscanthus and offer insights for improving Miscanthus remediation efficiency through the manipulation of plant growth-promoting rhizobacteria or key bacteria.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Nirali M. M. Raiyani, Satya P. P. Singh
Summary: In this investigation, a comprehensive and comparative analysis of bacterial communities and their functional potential in pristine and polluted marine sediments was conducted using MiSeq. Proteobacteria was the dominant phylum in all study sites, with other phyla including Actinobacteria, Bacteroidetes, Planctomycetes, Acidobacteria, Chloroflexi, Nitrospirae, Cyanobacteria, Verrucomicrobia, Tenericutes, and Chlorobi. The key genera identified were Acinetobacter, Bacillus, Pseudomona, Idiomarina, Thalassospira, Marinobacter, Halomonas, Planctomyces, Psychrobacter, and Vogesella. Major functions associated with metabolism, including amino acids, carbohydrates, energy generation, xenobiotics degradation, nitrogen, sulfate, and methane, were observed. This study significantly adds to our understanding of the microbiome and its functional attributes of marine sediments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biology
Mohsin Gulzar Barq, Muhammad Mubashar Hassan, Humaira Yasmin, Asim Shahzad, Noshaba Hassan Malik, Nicola Lorenz, Abdulaziz Abdullah Alsahli, Richard P. Dick, Naeem Ali
Summary: The study investigated the impact of pure and mixed fertilizers on soil bacterial and archaeal communities, revealing enhanced richness and diversity in all amendments. Different bacterial and archaeal phyla showed varying responses to different fertilizer combinations, with some exhibiting positive trends while others showed negative trends compared to controls.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2021)
Article
Engineering, Environmental
Avani Bharatkumar Patel, Toral Manvar, Kunal R. Jain, Chirayu Desai, Datta Madamwar
Summary: The study focused on eight bacterial consortia developed from PAH-contaminated sediments, with consortium ACDMRT-8 showing efficient degradation of naphthalene, phenanthrene, fluoranthene, and pyrene within a short period. While Proteobacteria dominated the bacterial communities in all consortia, the diversity varied based on enrichment conditions and types of PAHs provided. Pseudomonas species were found to be abundant in four consortia, facilitating degradation of all four PAHs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Chaochen Guo, Xuwang Zhang, Shimeng Luan, Hao Zhou, Lifen Liu, Yuanyuan Qu
Summary: Soil bacterial community diversity and structure in the intertidal zone of Daliao River are influenced by seasonal variations and nitrogen nutrients. The highest nitrification rate was detected in spring, and the predicted functional profiles indicated dominant nitrogen cycling processes in the soil.
MARINE POLLUTION BULLETIN
(2021)
Article
Soil Science
Bin Xie, Yanhui Chen, Cungang Cheng, Renpeng Ma, Deying Zhao, Zhuang Li, Yanqing Li, Xiuhong An, Xiaozhu Yang
Summary: This study evaluated the influence of different soil management practices on the soil microbial community in an apple orchard in western Liaoning, China. The results showed that sawdust mulching increased fungal abundance and diversity, improving soil ecosystem stability. Biochar mulching, on the other hand, reduced fungal diversity and was unfavorable for soil stability. Black plastic film mulching reduced bacterial diversity and colonization. Overall, sawdust mulching enhanced microbial richness, diversity, altered community composition, and improved soil ecosystem stability.
APPLIED SOIL ECOLOGY
(2022)
Article
Environmental Sciences
Guixian Xie, Xiaoliang Kong, Jialu Kang, Ning Su, Gongwen Luo, Jiangchi Fei
Summary: This study aimed to reveal the bacterial diversity succession during the co-composting of manure and crop residues and highlighted the importance of community-level dormancy strategies in mediating microbial succession. The abundance of genes underlying dormancy strategies increased as composting proceeded, reaching the highest in the thermophilic or maturation phases. Positive co-occurring relationships between bacterial communities and genes underlying dormancy strategies were observed in different composting phases.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biotechnology & Applied Microbiology
Yuliang Zhu, Yucan Liu, Huanhuan Chang, Hao Yang, Wei Zhang, Yanxiang Zhang, Hongwei Sun
Summary: The low purification efficiency in high-altitude wastewater treatment plants is a common problem. This study investigated the bacterial communities in high- and low-altitude WWTPs and found that altitude, ultraviolet index, pH, dissolved oxygen, and total nitrogen were the dominant environmental factors affecting microbial community assembly. The high-altitude group had lower community diversity and a unique microbial community structure, and low temperature and strong ultraviolet radiation were key factors contributing to reduced diversity in activated sludge microbial communities at high altitudes.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Engineering, Marine
Wenxun Dong, Zhengguo Cui, Mengjuan Zhao, Junfeng Li
Summary: In this study, the relationship between environmental factors and bacterial community structure in the estuary of the Bailang River was analyzed using high-throughput sequencing. The results showed that seasonal variations significantly affected the diversity and composition of bacterial communities. pH, salinity, and inorganic nitrogen were identified as key factors shaping the bacterial community composition. In addition, nitrogen-cycle-related processes played important roles in the bacterial community.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Microbiology
Linus Shing Him Lo, Zhimeng Xu, Sangwook Scott Lee, Wing Keung Lau, Jian-Wen Qiu, Hongbin Liu, Pei-Yuan Qian, Jinping Cheng
Summary: This study found that aquaculture activities contribute to nutrient pollution in the coastal environment, impacting planktonic bacterial communities and nitrogen cycling. These findings have important implications for understanding the interactions between microbiome and aquaculture activities.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Yi Li, Lijian Zhao, Lihua Niu, Longfei Wang, Shiqin Zhao, Xiangzhe Xu
Summary: Pressure treatment of Microcystis before discharge into water has emerged as a method to control Microcystis blooms. However, the effect of pressurized Microcystis on microbial communities in water has not been studied extensively. In this research, different pressure treatment protocols were evaluated and the most effective approach was pressurizing Microcystis up to 0.7 MPa in 5 seconds with a pressure-accelerating speed of 0.14 MPa/s, and treating for 30 seconds. After treatment, gas vesicles were destroyed and extracellular polymeric substance (EPS) on cells was exfoliated. The exfoliated EPS significantly affected microbial phyla associated with organic matter degradation, resulting in enhanced energy metabolism and increased uptake of dissolved organic phosphorus (DOP) by microorganisms. This study is important for understanding the impact of pressurized Microcystis control measures on lake ecology.
ALGAL RESEARCH-BIOMASS BIOFUELS AND BIOPRODUCTS
(2023)
Article
Environmental Sciences
Atefeh Zendehboudi, Azam Mohammadi, Sina Dobaradaran, Gabriel E. De-la-Torre, Bahman Ramavandi, Seyed Enayat Hashemi, Reza Saeedi, Emran Moradpour Tayebi, Ahmad Vafaee, Amirhossein Darabi
Summary: This study investigated the characteristics and ecological risks of microplastics (MPs) in ballast water for the first time, and found high levels of MP pollution. These findings contribute to our understanding of the sources and risks of microplastics in marine ecosystems.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Rose Boahemaa Pinto, Linda Bogerd, Martine van der Ploeg, Kwame Duah, Remko Uijlenhoet, Tim H. M. van Emmerik
Summary: Catchment-scale plastic pollution assessments provide insights into the sources, sinks, and pathways of plastic pollution. We propose an approach to quantify macroplastic transport and density in the Odaw catchment, Ghana, and find that the urban riverine zone has the highest transport, while the urban tidal zone has the highest riverbank and land macroplastic density.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Aliya Baidourela, Qian Sun, Gongxin Yang, Umut Halik, Zhongkai Dong, Kaixu Cai, Guili Sun, Wenya Zhang, Sisi Cheng
Summary: The study focused on heavy metal pollution in the green vegetation of a suburban industrial area in Tuokexun County, Xinjiang, China. The results showed that the overall level of heavy metal pollution in the soil was minor, with mercury (Hg) being the most severe contamination, likely caused by human activities. The composition of heavy metal elements in trees was more stable compared to grass and shrubs, with varying concentrations across different vegetation. Shrubbery was found to be the most effective in heavy metal restoration, and there were disparities in heavy metal enrichment among different vegetation types.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
James H. Bridson, Hayden Masterton, Beatrix Theobald, Regis Risani, Fraser Doake, Jessica A. Wallbank, Stefan D. M. Maday, Gavin Lear, Robert Abbel, Dawn A. Smith, Joanne M. Kingsbury, Olga Pantos, Grant L. Northcott, Sally Gaw
Summary: Plastic pollution has significant environmental impacts, largely due to chemical additives. However, the behavior of plastic additives in marine environments is not well understood. A marine deployment experiment was conducted to investigate the effects of weathering on the extractables profile of four types of plastics in New Zealand over a period of nine months. The concentration of additives in polyethylene and oxo-degradable polyethylene was strongly influenced by artificial weathering, while polyamide 6 and polyethylene terephthalate showed minimal change. These findings emphasize the importance of considering leaching and weathering effects on plastic composition when assessing the potential impact and risk of plastic pollution in receiving environments.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Alan G. Scarlett, Francis D. Spilsbury, Steven J. Rowland, Marthe Monique Gagnon, Kliti Grice
Summary: This study used diamondoid hydrocarbon distributions to identify the sources of environmental oil contamination. A suite of 20 diamondoids was found to accumulate in fish adipose tissue. The scatter plots of indices between fish and exposure oils showed a close to ideal 1:1 relationship, which can be used to determine the origin of the oil.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Shan Jiang, Mengmeng Wan, Kun Lin, Yanshan Chen, Rui Wang, Liju Tan, Jiangtao Wang
Summary: In this study, the concentration, composition, distribution, and sources of PCBs in surface seawater of the Bohai Bay were analyzed. The results showed that PCBs in the Bohai Bay had high concentrations and were primarily derived from land-based sources such as port activities and river inputs. The PCBs in the Bohai Bay may come from commercial PCBs and their incineration products, municipal landfills, wood and coal combustion, and industrial activities, etc.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Icaro S. A. Porto, Saulo V. A. Dantas, Caio S. A. Felix, Francisco A. S. Cunha, Jailson B. de Andrade, Sergio L. C. Ferreira
Summary: This study evaluated the risks of mercury levels in sardines consumed by low-income population in Salvador, Brazil. The results showed that the mercury content in the sampled sardines posed no risks to human health. This study is significant as most sardines in Salvador come from Todos os Santos Bay, which has a history of mercury contamination.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Jiahui Chen, Chengyu Yuan, Guanqun Zhai, Guangcheng Chen, Heng Zhu, Jun Liu, Yong Ye
Summary: This study investigated the combined influences of species selection and site elevation on greenhouse gas fluxes from restored mangrove soils. The results suggest that Avicennia marina should be selected for mangrove restoration to minimize carbon release and reduce the influence of greenhouse gas fluxes on the global greenhouse effect.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Emmanuel Onyeabor, Uju Obuka
Summary: The Gulf of Guinea region in Africa is a significant area for coastal countries, playing a vital role in their economic and environmental development. This study aims to reduce marine plastic pollution in the region by utilizing legal instruments.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Yuanli Liu, Stephan Luttjohann, Alvise Vianello, Claudia Lorenz, Fan Liu, Jes Vollertsen
Summary: Large area attenuated total reflectance-Fourier transform infrared spectroscopy (LAATR-FTIR) is a novel technique for detecting small microplastics, with limited accuracy for large microplastics. However, it shows promise in homogeneous matrices. The spectra quality is comparable between transmission mode and LAATR mode.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Phuc T. D. Le, Andrew M. Fischer, Britta D. Hardesty, Heidi J. Auman, Chris Wilcox
Summary: This study explores the relationship between ocean currents and the accumulation of floating marine debris (FMD) and finds that higher concentrations of FMD are associated with frontal frequencies (FF). FMD is primarily trapped in accumulation zones between fronts and the coastline, which have high biodiversity value.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Rosa Sawan, Perine Doyen, Florence Viudes, Rachid Amara, Celine Mahfouz
Summary: Few studies have examined the impact of urbanization and meteorological events on microplastics discharged into the sea through rivers. Surface water samples were collected from two Lebanese rivers, with differing degrees of urbanization, during dry and wet periods. The results showed that the most industrialized river had a significantly higher abundance of microplastics compared to the less-industrialized river. There was also a correlation between particle contamination and the season at each site, with microplastic concentrations highest on the first day of the wet season. These findings highlight the importance of considering meteorological events in accurately assessing plastic pollution influx into coastal waters.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Katherine R. Shaw, Jonathan L. Whitney, Eileen M. Nalley, Madeline C. Schmidbauer, Megan J. Donahue, Jesse Black, Raquel N. Corniuk, Kellie Teague, Rachel Sandquist, Catherine Pirkle, Rachel Dacks, Max Sudnovsky, Jennifer M. Lynch
Summary: This study examines the ingestion of plastic in reef fish in the Republic of the Marshall Islands. Plastic particles were found in the gastrointestinal tracts of multiple fish species. However, further analysis revealed that these particles were actually natural materials and posed no threat to human consumers.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Revati Hardikar, C. K. Haridevi, Shantaj Deshbhratar
Summary: This study investigated the variability in phytoplankton functional structure using a trait-based approach and explored the relationship between species traits and environmental factors, as well as their impact on ecosystem functioning. The results revealed that morphological traits, temperature, and ammonia played a decisive role in the seasonal succession of phytoplankton species. It was found that certain traits favored higher biomass production but might hinder energy transfer efficiency. The strong correlation between environmental variables and phytoplankton functional structure supports the practical implementation of a trait-based approach in studying phytoplankton community dynamics under different environmental conditions.
MARINE POLLUTION BULLETIN
(2024)
Article
Environmental Sciences
Engki A. Kisnarti, Nining Sari Ningsih, Mutiara R. Putri, Nani Hendiarti, Bernhard Mayer
Summary: This study examines the movement patterns of plastic marine debris in Indonesian waters, revealing that Indonesia contributes significantly to transboundary marine debris in the Pacific Ocean, Indian Ocean, and the South China Sea. Most of the debris remains in Indonesian waters and moves back and forth due to the influence of monsoon currents.
MARINE POLLUTION BULLETIN
(2024)