Article
Environmental Sciences
Romina Juncos, Alejandro Sosnovsky, Marina Arcagni, Andrea Rizzo, Romina Daga, Maria Angelica Arribere, Sergio Ribeiro Guevara
Summary: This study analyzed the distribution of potentially toxic trace elements in sediments and plankton from two small mesotrophic lakes impacted by volcanic activity. The composition of volcanic ashes in the lakes affected the trace element concentrations in surface sediments. The size and community structure of planktonic organisms played a significant role in trace element accumulation, with higher concentrations in microplankton. This study contributes to the limited knowledge of trace elements in freshwater ecosystems impacted by volcanic activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Oceanography
Marc H. Taylor, Anna Akimova, Astrid Bracher, Alexander Kempf, Bernhard Kuhn, Pierre Helaouet
Summary: This study investigates the formation and dynamics of ocean color (OC) provinces in the North Sea, revealing that the variability of OC provinces is likely driven by the interaction between large-scale circulation and local wind-driven currents. The study demonstrates that the perspective offered by OC provinces helps elucidate spatiotemporal patterns of plankton and is proposed as a novel operational index for additional exploration of ecosystem functioning.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Geochemistry & Geophysics
Margaret E. Hartley, Jan C. M. de Hoog, Oliver Shorttle
Summary: Trace elements and volatile heterogeneity in the Earth's mantle are affected by the recycling of oceanic lithosphere through subduction processes. Boron isotopes are utilized as a tracer for recycled subducted materials, showing the fate of these materials in the mantle and the composition heterogeneity in various tectonic settings. The new data suggest the presence of depleted and enriched mantle components intrinsic to the Icelandic mantle source, highlighting the role of recycled subducted lithosphere in melt generation at ocean islands.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Limnology
Shin-Ichiro S. Matsuzaki, Richard C. Lathrop, Stephen R. Carpenter, Jake R. Walsh, M. Jake Vander Zanden, Mark R. Gahler, Emily H. Stanley
Summary: This study found that climate change and food web structure can impact the significant clear-water phase in lakes, with effects varying among different metrics. Higher water temperature leads to earlier start and peak dates of the clear-water phase, while the proportion of D. pulicaria affects all clear-water phase metrics, and high Bythotrephes density delays the start date of the clear-water phase.
LIMNOLOGY AND OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Lizeng Duan, Hucai Zhang, Fengqin Chang, Donglin Li, Qi Liu, Xiaonan Zhang, Fengwen Liu, Yang Zhang
Summary: Lake sediment is an important carbon reservoir, and its distribution is influenced by trophic state and terrestrial input, resulting in different patterns of organic matter sources in different lakes.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Article
Environmental Sciences
Patricia E. Garcia, Marina Gerea, Maria C. Dieguez
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Iris Caceres-Saez, Daniela Haro, Olivia Blank, Anelio Aguayo-Lobo, Catherine Dougnac, Cristobal Arredondo, H. Luis Cappozzo, Sergio Ribeiro Guevara
Summary: Cetaceans are recognized as good indicators of marine ecosystem health globally. This study assessed the concentrations of various elements in the skin of stranded false killer whales in South America, revealing concentration variations among tissues. The findings suggest potential inter-tissue relationships for certain elements and support the use of certain elements as offshore marine biomarkers.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Analytical
Jan Gacnik, Igor Zivkovic, Sergio Ribeiro Guevara, Radojko Jacimovic, Joze Kotnik, Milena Horvat
Summary: The study evaluated the performance of a newly developed calibration unit for HgCl2 gas concentrations higher than 1 µg m(-3) and found that the recovery rate is concentration-dependent, limiting its use for calibrating instruments for ambient GOM measurements. Additionally, the recovery rates for HgBr2 gas calibration were lower than for HgCl2 gas, suggesting a need for further development regarding the suitability for such calibration.
Article
Geosciences, Multidisciplinary
Jorge E. Romero, Brent V. Alloway, Romina Gutierrez, Daniel Bertin, Angelo Castruccio, Gustavo Villarosa, C. Ian Schipper, Alicia Guevara, Jorge Bustillos, Alessandro Pisello, Romina Daga, Mauricio Montiel, Emma Gleeman, Mauro Gonzalez, Daniele Morgavi, Sergio Ribeiro Guevara, Mauricio Mella
Summary: This study examines the eruptive activity of Volcán Calbuco in northwest Patagonia from the late-18th Century onwards. It identifies 11 discrete tephra units from historical eruptions and analyzes their composition, volume, and style. The study reveals a narrow compositional range of juvenile pyroclasts and compares the magnitude and explosivity of historic eruptions from 1893, 1961, and 2015.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2021)
Article
Environmental Sciences
N. E. Fioramonti, S. Ribeiro Guevara, Y. A. Becker, L. Riccialdelli
Summary: The study investigated the accumulation patterns and trophic transfer pathways of total mercury (Hg) in three sub-Antarctic food webs. The results showed site-specific patterns of Hg transfer and biomagnification processes, with major Hg transfer through the pelagic domain in the oceanic site and a general biodilution process in the coastal sites, but with increasing Hg concentrations with higher benthivory grade.
MARINE POLLUTION BULLETIN
(2022)
Article
Biodiversity Conservation
Iris Caceres-Saez, Daniela Haro, Olivia Blank, Anelio Aguayo-Lobo, Catherine Dougnac, Cristobal Arredondo, H. Luis Cappozzo, Sergio Ribeiro Guevara
Summary: This study examined the concentrations of macro-elements in different tissues and organs of false killer whales in the sub-Antarctic waters of the South Atlantic Ocean. The results provide reference values for assessing the general condition of false killer whales and show variations in the concentrations of potassium, sodium, chlorine, magnesium, and calcium among different tissues.
Article
Chemistry, Analytical
Jan Gacnik, Igor Zivkovic, Sergio Ribeiro Guevara, Joze Kotnik, Sabina Berisha, Sreekanth Vijayakumaran Nair, Andrea Jurov, Uros Cvelbar, Milena Horvat
Summary: Atmospheric mercury measurements have faced bias due to insufficient consideration of traceability and measurement uncertainty. This is particularly challenging for gaseous Hg-II species. A calibration method using nonthermal plasma oxidation of Hg-0 to Hg-II is presented, demonstrating its potential for reliable calibration.
ANALYTICAL CHEMISTRY
(2022)
Article
Fisheries
Patricia E. Garcia, Carolina F. Mansilla Ferro, Maria C. Dieguez
Summary: The optical characterization of DOM in a Patagonian wetland showed that changes in hydroperiod and dissolved organic carbon concentration influenced the photoreactivity and lability of DOM. The relative contribution of humic and non-humic components played a crucial role in determining the reactivity of DOM.
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
(2023)
Article
Environmental Sciences
L. G. De Stefano, A. Sanchez Valdivia, D. Gianello, M. Gerea, M. Reissig, P. E. Garcia, R. D. Garcia, C. Soto Cardenas, M. C. Dieguez, C. P. Queimalinos, G. L. Perez
Summary: For the past twenty years, lacustrine dissolved organic matter (DOM) has been a focus in various scientific disciplines due to its significance in carbon biogeochemistry and ecosystem functioning. The development of new satellites now allows for the evaluation of chromophoric dissolved organic matter (CDOM) in inland waters, which provides the opportunity to estimate DOM at appropriate spatiotemporal scales. This study evaluates the use of CDOM as a proxy for dissolved organic carbon (DOC) in seven Andean Patagonian lakes, and explores the relationship between CDOM absorption coefficients and DOC. The findings suggest that incorporating CDOM spectral shape information improves the estimation of DOC and has significant implications for environmental management, biogeochemical studies, and future remote sensing applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Andrea Juarez, Israel A. Vega, Luis S. Mayorga, Sergio Ribeiro Guevara, Maria A. Arribere
Summary: The aim of this study was to investigate the absorption, distribution, and bioaccumulation of arsenic by freshwater snail Pomacea conaliculata. It was found that arsenic mainly travels dissolved in the snail's hemolymph and is transferred to various tissues. In addition, the snails exhibited a rapid accumulation response to arsenic and could incorporate it from the digestive system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Mariana Lozada, Maria Soledad Zabala, Patricia E. Garcia, Maria C. Dieguez, Gregorio Bigatti, Paulina Fermani, Fernando Unrein, Hebe M. Dionisi
Summary: This study analyzed the microbial communities associated with Undaria pinnatifida in a coastal site in Patagonia. The presence of U. pinnatifida was found to have a significant impact on seawater quality, bacterial abundance, and microbial community structure.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Aaranza Apestegui, Romina Juncos, Romina Daga, Juan Pablo Barriga, Andrea Rizzo, Sergio Ribeiro Guevara
Summary: The study aimed to assess the environmental quality of sediments in eleven Patagonian lakes by analyzing the concentrations of five trace elements. The results showed that some lakes have potentially toxic concentrations of elements, which may pose a risk to aquatic biota.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Fisheries
Natalia Williams, Andrea Rizzo, Romina Daga, Walter A. Alfonzo, Sergio Ribeiro Guevara
Summary: Lacustrine environments in Northern Patagonia are affected by volcanic events from the Southern Volcanic Zone. Chironomid larvae, due to their environmental sensitivity and well-preserved chitinous cephalic remains, serve as important paleo-proxies. This study analyzed the impact of a recent volcanic eruption on the chironomid community, based on the accumulation of their cephalic remains following ash deposition. The results showed different chironomid responses to the volcanic deposition, suggesting caution in using chironomid assemblages for paleoreconstructions.
NEW ZEALAND JOURNAL OF MARINE AND FRESHWATER RESEARCH
(2023)
Article
Environmental Sciences
Romina Juncos, Alejandro Sosnovsky, Marina Arcagni, Andrea Rizzo, Romina Daga, Maria Angelica Arribere, Sergio Ribeiro Guevara
Summary: This study analyzed the distribution of potentially toxic trace elements in sediments and plankton from two small mesotrophic lakes impacted by volcanic activity. The composition of volcanic ashes in the lakes affected the trace element concentrations in surface sediments. The size and community structure of planktonic organisms played a significant role in trace element accumulation, with higher concentrations in microplankton. This study contributes to the limited knowledge of trace elements in freshwater ecosystems impacted by volcanic activity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Meteorology & Atmospheric Sciences
Jan Gacnik, Igor Zivkovic, Sergio Ribeiro Guevara, Radojko Jacimovic, Joze Kotnik, Gianmarco De Feo, Matthew A. Dexter, Warren T. Corns, Milena Horvat
Summary: The atmospheric mercury speciation is essential for understanding the fate of emitted mercury. GOM and PBM can form in the atmosphere, with sampling them posing challenges. The use of KCl sorbent traps for GOM sampling shows specificity issues and Hg2+ losses, indicating limitations for atmospheric mercury speciation measurements.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2021)
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)