Article
Environmental Sciences
Xianbiao Lin, Genmei Lin, Yijie Zheng, Wenjing Li, Peng Guo, Shiyuan Fan, Tiantian Kong, Dongfan Tian, Dongyao Sun, Zhuo Shen
Summary: Sediment nitrogen (N) mineralization and immobilization driven by microorganisms play important roles in regulating water quality in aquaculture ecosystems. However, there is limited information about the quantitative importance of these processes in coastal aquaculture systems. This study used incubation experiments and isotope dilution techniques to quantify N mineralization and immobilization in surface sediments of three types of aquaculture ecosystems in the Pearl River Estuary. The results showed no significant differences in sediment N mineralization and immobilization rates, microbial abundances, and organic matter among the different aquaculture types on a small-scale range. Prolonged pond-drying significantly reduced these rates and abundances, indicating the importance of moisture content for these processes. The study estimated the total mineralized and immobilized N in aquaculture surface sediments in the Guangdong-Hong Kong-Macao Greater Bay Area to be approximately 4.55x10(4) and 3.68x10(4) t N yr(-1), respectively.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Hong-Duck Ryu, Sun-Jung Kim, Un-il Baek, Deok-Woo Kim, Hyun-Jeoung Lee, Eu Gene Chung, Min-Seob Kim, Kyunghyun Kim, Jae Kwan Lee
Summary: A novel approach using dual ammonium and nitrate nitrogen isotope ratios was proposed to identify nitrogen sources in intensive livestock farming watersheds, showing that seasonal patterns of delta N-15(NH4) and delta N-15(NO3) can reflect nitrogen pollution from agricultural activities. The study revealed that microbial nitrification is the dominant nitrogen transformation process in the river, and the dual delta N-15(NH4) and delta N-15(NO3) axes provide better results compared to traditional methods for identifying nitrogen sources in agricultural watersheds with swine excreta treatment facilities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Oceanography
A. Lheureux, V David, Y. Del Amo, D. Soudant, I Auby, F. Ganthy, H. Blanchet, M-A Cordier, L. Costes, S. Ferreira, L. Mornet, A. Nowaczyk, M. Parra, F. D'Amico, L. Gouriou, C. Meteigner, H. Oger-Jeanneret, L. Rigouin, M. Rumebe, M-P Tournaire, F. Trut, G. Trut, N. Savoye
Summary: Large amounts of nutrients have been released to coastal ecosystems, and this study focuses on the bi-decadal changes in nutrient concentrations and ratios in the Arcachon bay. The study finds that the concentration of nitrogen and silicic acid increased, while the concentration of orthophosphate decreased, leading to changes in nutrient ratios. The decline of seagrass meadow is identified as the main driver of these changes, through direct and indirect processes. Additionally, the study highlights the importance of abiotic drivers such as local climate, continental inputs, and bay hydrodynamics in influencing nutrient concentrations.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Environmental Sciences
Tatsuro Tanioka, Catherine A. Garcia, Alyse A. Larkin, Nathan S. Garcia, Adam J. Fagan, Adam C. Martiny
Summary: Oceanic nutrient cycles are coupled, and carbon-nitrogen-phosphorus stoichiometry is variable through space and time. Surface temperature and macronutrient availability are strong predictors of stoichiometry at high latitudes. There is systematic regulation of elemental stoichiometry among ocean ecosystems, but future changes remain uncertain.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Environmental Sciences
Young-Jae Jeong, Bo-Seong Seo, Nuri Baek, Jin-Hyeob Kwak, Sang-Mo Lee, Hyun-Jin Park, Woo-Jung Choi
Summary: This study proposed methods for determining the δN-15 of multiple nitrogen species. The methods included traditional distillation, direct evaporation, and isotope mass balance equation. The accuracy and precision of the methods were evaluated through a series of experiments, and the influences of different conditions on the analysis results were assessed.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Review
Environmental Sciences
Zhao Liang Chen, Shing Yip Lee
Summary: Tidal flats are widely distributed and provide various ecosystem services. The global average carbon accumulation rate in tidal flats is 129.8 g C m(-2) yr(-1), with an average carbon content of 86.3 Mg C ha(-1). If tidal flats continue to be lost and disturbed sediment carbon continues to be remineralized, a significant amount of carbon will be lost annually, leading to CO2 emissions in the water column and atmosphere.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Plant Sciences
Kaiyan Zhang, Yanyou Wu, Yue Su, Haitao Li
Summary: The proportions of assimilated nitrate and ammonium in Brassica napus plantlets grown at different ammonium/nitrate ratios were quantified using stable nitrogen isotope tracer technique. The utilization proportions of sucrose and CO2 were quantified by a two end-member isotope mixing model. Increasing the nitrate concentration promoted the ammonium assimilation and enhanced the ammonium utilization coefficient. The amount of nitrogen derived from nitrate assimilation increased with increasing nitrate concentration, while the nitrate utilization coefficient showed no significant change.
Article
Environmental Sciences
Paraskevi Mara, Virginia P. Edgcomb, Taylor R. Sehein, David Beaudoin, Chuck Martinsen, Christina Lovely, Bridget Belcher, Rebecca Cox, Meghan Curran, Claire Farnan, Peter Giannini, Sarah Lott, Kyle Paquette, Anna Pinckney, Natalie Schafer, Tonna-Marie Surgeon-Rogers, Daniel R. Rogers
Summary: The study found that oyster aquaculture plays a positive role in the removal of nitrogen from sediments, but different farming methods show variations in gene expression related to nitrogen cycling and nitrogen gas flux. Particularly, nitrogen retention process is significantly enhanced, especially under the bottom cages.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biodiversity Conservation
Mallory A. Sea, Jenny R. Hillman, Simon F. Thrush
Summary: The carbon storage and sequestration potential of bivalve-dominated systems in response to climate change and the loss of global shellfish ecosystems is of increasing interest. This study examines the direct and indirect effects of green-lipped mussels on carbon cycling and suggests that benthic bivalve restoration efforts in New Zealand result in a moderate carbon efflux. However, it also finds that restoration efforts lead to greater carbon fixation rates and enhanced carbon burial compared to sediments without mussels. The study highlights the need for further research to understand the long-term impacts.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Ecology
Helena Vallicrosa, Jordi Sardans, Joan Maspons, Josep Penuelas
Summary: The aim of this study was to create global maps of foliar nitrogen-to-phosphorus (N:P) ratios in woody vegetation based on climate, soil, and nutrient deposition data. The study found that foliar N:P ratios were negatively correlated with latitude, with higher ratios in tropical forests and lower ratios in boreal forests. Globally, P limitation was greater than N limitation. The study also highlighted the importance of genetic legacy in explaining variation in foliar N:P ratios in woody plants.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2022)
Article
Environmental Sciences
Lei Xie, Xuelu Gao, Yongliang Liu, Bo Yang, Huamao Yuan, Xuegang Li, Jinming Song, Jianmin Zhao, Qianguo Xing
Summary: This study assesses the source characteristics of coastal aerosols and evaluates the contribution of atmospheric deposition to particulate organic matter in surface seawater. The results show that biogenic and biomass sources, as well as fossil fuel combustion, are the major sources of total suspended particulates (TSP). Atmospheric deposition has a significant impact on suspended particulate matter and particulate organic carbon in coastal waters.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Toby J. Boocock, Eva E. Stueken, Grant M. Bybee, Ramona Konig, Adrian J. Boyce, Julie Prytulak, Iris Buisman, Sami Mikhail
Summary: This study investigates the geochemical characteristics of nitrogen in the calc-alkaline pluton at Loch Doon, SW Scotland, and finds that the whole-rock likely inherited its N contents and δ^15N signature from the initial source composition and shows homogeneity at a pluton scale. At a mineral scale, it is found that N preferentially partitions into feldspars over mica in this system, and a large and near constant equilibrium isotope fractionation factor exists between biotite and both feldspars.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Food Science & Technology
Shanshan Li, Yinfeng Li, Wenyin Wang, Jianxin Jiao, Allan Degen, Tao Zhang, Yanfu Bai, Jingxue Zhao, Michael Kreuzer, Zhanhuan Shang
Summary: This study investigates the influence of remoteness and globalization on dietary habits of pastoralists using isotopic analysis. The results show that dietary habits differ between easily accessible and remote areas, with easily accessible areas being more influenced by external food sources and deviating from the local ecological chain.
FOOD RESEARCH INTERNATIONAL
(2023)
Article
Agronomy
Yuntao Wu, Xiaodong Zhang, Zhaoliang Song, Changxun Yu, Man Liu, Yidong Wang, Qian Hao, Qiang Li, Xiangwei Zhao, Lele Wu, Xia Wang
Summary: This study investigates the spatial patterns and driving factors of carbon and nitrogen isotopes in plant-soil systems of grasslands in northern China. The results provide important references for future research on biogeochemical cycles in temperate grasslands.
Article
Marine & Freshwater Biology
Irena Telesh, Hendrik Schubert, Sergei Skarlato
Summary: Although there is a lot of knowledge about triggers and drivers of phytoplankton dynamics in sea coastal waters, there is still not a comprehensive understanding of the combinations of hydro-physical, hydro-chemical, and biotic characteristics that induce harmful algal blooms (HABs). Recent laboratory experiments have highlighted the importance of abiotic stability as a generic environmental feature responsible for various modes of plankton dynamics, including chaotic behavior. The high adaptability and plasticity of feeding strategies employed by dominant mixotrophic dinoflagellates make it difficult to find clear correlations between stability of nutrient concentration and the magnitude of blooms.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Biodiversity Conservation
Quentin Nogues, Aurore Raoux, Emma Araignous, Aurelie Chaalali, Tarek Hattab, Boris Leroy, Frida Ben Rais Lasram, Valerie David, Francois Le Loc'h, Jean-Claude Dauvin, Nathalie Niquil
Summary: This study demonstrates the sensitivity and effectiveness of Ecological Network Analysis (ENA) indices in describing and understanding the cumulative effects of drivers on ecosystems. ENA indices were found to be powerful tools for managers, suggesting potential for practical application by linking ecosystem services to ENA indices.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Daniel F. Araujo, Joel Knoery, Nicolas Briant, Nathalie Vigier, Emmanuel Ponzevera
Summary: The advent of Multicollector ICP-MS has opened the door to studying nontraditional isotopes in marine metal contamination, providing valuable tools for understanding geochemical and ecotoxicological aspects. However, research on these applications is still in its early stages, with limited information on recent developments and obstacles. This paper aims to fill this gap and encourage the marine scientific community to utilize this newly available information for chemical risk assessment, biomonitoring, and examining the trophic transfer of metal contaminants.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Environmental
Daniel Cossa, Joel Knoery, Daniela Banaru, Mireille Harmelin-Vivien, Jeroen E. Sonke, Ian M. Hedgecock, Andrea G. Bravo, Ginevra Rosati, Donata Canu, Milena Horvat, Francesca Sprovieri, Nicola Pirrone, Lars-Eric Heimburger-Boavida
Summary: Mercury contamination in the Mediterranean, especially in its methylated form, is higher than in other regions of Europe. Methylmercury accounts for a large proportion of the total mercury, and plays a significant role in the supply of mercury to the adjacent North Atlantic Ocean. The concentrations of methylmercury vary in different areas of the Mediterranean, with higher levels associated with low oxygen water masses. This variation is transferred through the food chain and affects the mercury content in top-predatory fish. Monitoring and mitigation strategies are necessary to protect Mediterranean populations from mercury exposure, while still allowing seafood consumption. There are still gaps in our understanding of mercury cycling in the Mediterranean, which requires further research.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Oceanography
Daniel F. Araujo, Joel Knoery, Nicolas Briant, Emmanuel Ponzevera, Daniel Santos Mulholland, Sandrine Bruzac, Teddy Sireau, Tiphaine Chouvelon, Christophe Brach-Papa
Summary: This study investigates metal distributions and stable isotope ratios of copper and zinc in different size fractions of marine suspended particulate matter (SPM) from the Bay of Biscay. The results show that smaller size fractions of SPM are enriched with geogenic Cu and Zn, while larger size fractions contain Cu and Zn metabolically incorporated into biogenic organic particles. The isotopic composition of the biogenic particles likely represents the local marine organic matter available to primary consumers. Targeting particles of specific size classes allows for the identification of different pools and their isotopic composition, which can help track Cu and Zn transfers through the marine food-web.
CONTINENTAL SHELF RESEARCH
(2022)
Article
Engineering, Environmental
Melanie Ourgaud, Nam Ngoc Phuong, Laure Papillon, Christos Panagiotopoulos, Francois Galgani, Natascha Schmidt, Vincent Fauvelle, Christophe Brach-Papa, Richard Sempere
Summary: In this study, the performance of the newly developed laser direct infrared (LDIR) technique for marine microplastics (MPs) analysis was evaluated for the first time. An optimized protocol using an 8 μm porosity polycarbonate filter placed on a Kevley slide was proposed, enabling preconcentration and efficient quantification of MPs. The technique showed high recoveries and negligible blank values for particle sizes ranging from 200 to 500 μm. Application of this technique to Mediterranean marine samples indicated consistent results with the literature, identifying PVC, PE, and PP as the predominant polymer types.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Oceanography
Anne-Sophie Pavaux, Flora Drouet, Jean-Louis Jamet, Jean -Marc Ginoux, Christophe Brach -Papa, Yanis Sindt-Baret, Veronique Lenoble, Dominique Jamet
Summary: The long-term evolution of pico-and nanophytoplanktonic communities was studied in two contrasting coastal sites from the bay of Toulon using monthly flow cytometry analyses over a seven-year period. The more eutrophic site showed higher abundance of both pico-and nanophytoplanktonic communities. Despite the dominance of Synechococcus spp. population in both sites, it accounted for over 90% of the population during summer in the Large Bay. The use of diversity indices and rank frequency diagrams revealed that the more polluted site had a paradoxically more diversified and mature community compared to the less diversified and juvenile community in the Large Bay, which was attributed to the dominance of Synechococcus spp.
CONTINENTAL SHELF RESEARCH
(2023)
Article
Environmental Sciences
Hyeryeong Jeong, Daniel F. Araujo, Joe Knoery, Nicolas Briant, Kongtae Ra
Summary: This study applied a multi-isotope and multi-elemental characterization to different antifouling paints (APs) for the first time, to improve their tracking in marine environments. The high contents of copper and zinc were observed in APs. The elemental fingerprint analysis revealed that APs, tires, and brake pads have distinct fingerprints. However, the first attempt to apply this method in highly urbanized harbor areas showed difficulties in source apportionments.
ENVIRONMENTAL POLLUTION
(2023)
Article
Marine & Freshwater Biology
Daniel F. Araujo, Emmanuel Ponzevera, Joel Knoery, Nicolas Briant, Sandrine Bruzac, Teddy Sireau, Anne Pellouin-Grouhel, Christophe Brach-Papa
Summary: This study analyzed the Cu stable isotope compositions in indigenous oysters to monitor anthropogenic Cu inputs in aquatic systems. The results showed fluctuating Cu concentrations without clear temporal trends in oysters from macrotidal estuaries, while the Cu isotope ratios indicated a constant proportion of natural and anthropogenic Cu sources. In contrast, oysters from progressively developing locales showed increasing Cu concentrations and positive shifts in Cu isotope compositions over time, suggesting a gradual accumulation of anthropogenic Cu. The Cu isotope compositions in oysters provide a reliable approach for detecting anthropogenic Cu contamination in marine biomonitoring and can be used for seafood traceability.
JOURNAL OF SEA RESEARCH
(2023)
Article
Environmental Sciences
Arnaud Lheureux, Valerie David, Yolanda Del Amo, Dominique Soudant, Isabelle Auby, Yann Bozec, Pascal Conan, Florian Ganthy, Gerald Gregori, Alain Lefebvre, Aude Leynart, Peggy Rimmelin-Maury, Philippe Souchu, Vincent Vantrepote, Camille Blondel, Thierry Cariou, Olivier Crispi, Marie-Ange Cordier, Muriel Crouvoisier, Vincent Duquesne, Sophie Ferreira, Nicole Garcia, Laure Gouriou, Emilie Grosteffan, Yoann Le Merrer, Claire Meteigner, Michael Retho, Marie-Pierre Tournaire, Nicolas Savoye
Summary: Coastal ecosystems receive different amounts of nutrients from the continent and human activities, and their nutrient concentrations have been changing over time. Most of the French coastal ecosystems showed a decrease in nutrient concentrations, except for the Arcachon Bay. Monitoring ecosystem changes and considering both local and large-scale factors are important for understanding and managing coastal ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Marc Tedetti, Jacek Tronczynski, Francois Carlotti, Marc Pagano, Sana Ben Ismail, Cherif Sammari, Malika Bel Hassen, Karine Desboeufs, Charlotte Poindron, Sandrine Chifflet, Amel Bellaaj Zouari, Moufida Abdennadher, Sirine Amri, Daniela Banaru, Lotfi Ben Abdallah, Nagib Bhairy, Ismail Boudriga, Aude Bourin, Christophe Brach-Papa, Nicolas Briant, Lea Cabrol, Cristele Chevalier, Lassaad Chouba, Sylvain Coudray, Mohamed Nejib Daly Yahia, Thibault de Garidel-Thoron, Aurelie Dufour, Jean-Claude Dutay, Boris Espinasse, Pamela Fierro-Gonzalez, Michel Fornier, Nicole Garcia, Franck Giner, Catherine Guigue, Loic Guilloux, Asma Hamza, Lars-Eric Heimbuerger-Boavida, Stephanic Jacquet, Joel Knoery, Rim Lajnef, Nouha Makhlouf Belkahia, Deny Malengros, Pauline L. Martinot, Anthony Bosse, Jean-Charles Mazur, Marouan Meddeb, Benjamin Misson, Olivier Pringault, Marianne Quemeneur, Olivier Radakovitch, Patrick Raimbault, Christophe Ravel, Vincent Rossi, Chaimaa Rwawi, Asma Sakka Hlaili, Javier Angel Tesan-Onrubia, Bastien Thomas, Melilotus Thyssen, Noureddine Zaaboub, Cedric Garnier
Summary: This paper discusses the experiential feedback and challenges related to the MERITEHIPPOCAMPE cruise in the Mediterranean Sea in spring 2019. The cruise proposed an innovative approach to investigate the accumulation and transfer of contaminants within planktonic food webs. The paper provides detailed information on the cruise operations, including sampling stations, strategy, and parameters analyzed, as well as the environmental conditions during the campaign. Additionally, it presents the articles produced based on the cruise work.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Marine J. Briand, Olivier Herlory, Nicolas Briant, Christophe Brach-Papa, Pierre Boissery, Marc Bouchoucha
Summary: Active biomonitoring of chemical contamination in French Mediterranean coastal waters has been conducted for over two decades. This study presents the current contamination levels in 2021 and the temporal changes from 2000. The results show that most sites had low concentrations in 2021 (>83%), but moderate to high levels were detected near urban industrial centers and river mouths. There was no major trend in contamination over the past 20 years, raising questions about future efforts needed. However, decreasing trends in organic compounds indicate the effectiveness of some management actions.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Javier Angel Tesan-Onrubia, Lars-Eric Heimbuerger-Boavida, Aurelie Dufour, Mireille Harmelin-Vivien, Isabel Garcia-Arevalo, Joel Knoery, Bastien Thomas, Francois Carlotti, Marc Tedetti, Daniela Banaru
Summary: Plankton in the Mediterranean Sea is influenced by various factors, such as size, food sources, biochemical composition, and trophic level, leading to differences in the bioaccumulation and biomagnification of mercury. Higher concentrations of monomethylmercury are found in oligotrophic regions, and plankton communities in the Southern Mediterranean Sea have lower concentrations compared to the Northern Mediterranean Sea.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
