Estuaries and CoastsPub Date : 2026-01-01Epub Date: 2025-10-04DOI: 10.1007/s12237-025-01616-y
Juliet Vallejo, Evelyn Roozee, Dongkyu Kim, Andrew M Song, Christopher A Gabler, Jasper de Vries, Antonia Sohns, Gordon M Hickey, Owen Temby
{"title":"A Preliminary Investigation of Research Collaboration Through Scientific Paper Co-authorship in the Gulf of Mexico.","authors":"Juliet Vallejo, Evelyn Roozee, Dongkyu Kim, Andrew M Song, Christopher A Gabler, Jasper de Vries, Antonia Sohns, Gordon M Hickey, Owen Temby","doi":"10.1007/s12237-025-01616-y","DOIUrl":"10.1007/s12237-025-01616-y","url":null,"abstract":"<p><p>It is well known that publications with collaborators from external institutions increase citations. This effect scales with spatial distance. There are also many barriers to long-distance collaborations, including linguistic differences, funding constraints, and the incremental costs of remote collaboration. This paper uses the Gulf of Mexico as a case study to examine long-distance research collaboration because it consists of three countries with diverse development levels and two prominent diplomatic languages, within a singular regional ecosystem of tremendous natural and economic value. This paper uses bibliometric network analysis to examine scientific research article co-authorship in the Gulf of Mexico from 2000 to 2018. The results reveal that, although inter-organizational co-authorship has increased, significant fragmentation exists between the U.S.A, Mexico, and Cuba. Large differences in technological and organizational proximity as well as research capacity between US and Mexican states in the Gulf of Mexico may make collaboration more difficult compared to other transboundary settings, such as the US-Canadian border. Centrally located organizations in the network, such as NOAA, have played a prominent role in cross-institutional research, suggesting a capacity to bridge political entities in the Gulf of Mexico.</p>","PeriodicalId":11921,"journal":{"name":"Estuaries and Coasts","volume":"49 1","pages":"5"},"PeriodicalIF":2.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12496297/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145238087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Measuring hydrological alterations and landscape patterns for sustainable development through ecosystem connectivity in Hastinapur Wildlife Sanctuary, India.","authors":"Sonali Kundu, Narendra Kumar Rana, Barnali Kundu","doi":"10.1016/j.jes.2025.03.034","DOIUrl":"https://doi.org/10.1016/j.jes.2025.03.034","url":null,"abstract":"<p><p>Floodplain wetlands are invaluable ecosystems providing numerous ecological benefits, yet they face a global crisis necessitating sustainable preservation efforts. This study examines the depletion of floodplain wetlands within the Hastinapur Wildlife Sanctuary (HWLS) in Uttar Pradesh. Encroachment activities such as grazing, agriculture, and human settlements have fragmented and degraded critical wetland ecosystems. Additionally, irrigation projects, dam construction, and water diversion have disrupted natural water flow and availability. To assess wetland inundation in 2023, five classification techniques were employed: Random Forest (RF), Support Vector Machine (SVM), artificial neural network (ANN), Spectral Information Divergence (SID), and Maximum Likelihood Classifier (MLC). SVM emerged as the most precise method, as determined by kappa coefficient and index-based validation. Consequently, the SVM classifier was used to model wetland inundation areas from 1983 to 2023 and analyze spatiotemporal changes and fragmentation patterns. The findings revealed that the SVM classifier accurately mapped 2023 wetland areas. The modeled time-series data demonstrated a 62.55 % and 38.12 % reduction in inundated wetland areas over the past 40 years in the pre- and post-monsoon periods, respectively. Fragmentation analysis indicated an 86.27 % decrease in large core wetland areas in the pre-monsoon period, signifying severe habitat degradation. This rapid decline in wetlands within protected areas raises concerns about their ecological impacts. By linking wetland loss to global sustainability objectives, this study underscores the global urgency for strengthened wetland protection measures and highlights the need for integrating wetland conservation into broader sustainable development goals. Effective policies and adaptive management strategies are crucial for preserving these ecosystems and their vital services, which are essential for biodiversity, climate regulation, and human well-being.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"322-338"},"PeriodicalIF":6.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145176114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing the biodegradation of low-density polyethylene (LDPE) using novel bacterial consortia: Bacillus sp. AS3 and Sphingobacterium sp. AS8.","authors":"Pornya Khampratueng, Anil Kumar Anal","doi":"10.1016/j.jes.2025.04.007","DOIUrl":"https://doi.org/10.1016/j.jes.2025.04.007","url":null,"abstract":"<p><p>Pretreatment of Low-Density Polyethylene (LDPE) with physicochemical methods before biodegradation has been demonstrated as an effective strategy. The pretreatment of LDPE exhibited alterations in molecular structure, reducing hydrophobicity and decreasing tensile strength. Additionally, pretreating LDPE enhanced microbial biodegradability to improve biofilm formation and significantly reduced the physical weight of LDPE film. AS3-8 consortia exhibited a maximum weight loss of 8.0 % ± 0.5 % after 45 days of incubation. While Bacillus sp. AS3 and Sphingobacterium sp. AS8 demonstrated LDPE weight loss of 5.03 % ± 1.6 % and 1.6 % ± 0.5 %, respectively. The structure of LDPE was altered after incubation with the bacterial strains, resulting in a reduction in the intensity of functional groups, including C=O, C=C, N-H, and C-N. The carbonyl index (CI) of LDPE also decreased by 7.17 % after the consortia AS3-8 degradation. Consortia AS3-8 significantly impacted the physical properties of LDPE by reducing the water contact angle (WCA), decreasing to 64.21° ± 3.69°, and tensile strength (TS), decreasing to 17.97 ± 0.3 MPa. Moreover, the esterase activity was measured through 45 days of incubation. SDS-PAGE analysis of the AS3-8 consortia revealed bands at 35, 48, and 70 kDa molecular weights, similar to known enzymes like laccase and esterase. Furthermore, SEM observations showed rough, cracked surfaces on pretreated LDPE, with biofilms present after incubation with the bacterial strains. GC-MS analysis revealed that AS3-8 consortia produced depolymerized chemicals, including alkanes, aldehydes, and esters. The LDPE biodegradation pathway was elucidated. This study addresses critical knowledge gaps in improving plastic degradation efficiency.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"263-270"},"PeriodicalIF":6.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145176160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A decision framework for rural domestic sewage treatment models and process: Evidence from Inner Mongolia Autonomous Region, China.","authors":"Ying Yan, Pengyu Li, Zixuan Wang, Yubo Tan, Tianlong Zheng, Jianguo Liu, Xiaoxia Yang, Junxin Liu","doi":"10.1016/j.jes.2025.05.016","DOIUrl":"https://doi.org/10.1016/j.jes.2025.05.016","url":null,"abstract":"<p><p>Rural domestic sewage treatment is critical for environmental protection. This study defines the spatial pattern of villages from the perspective of rural sewage treatment and develops an integrated decision-making system to propose a sewage treatment mode and scheme suitable for local conditions. By considering the village spatial layout and terrain factors, a decision tree model of residential density and terrain type was constructed with accuracies of 76.47 % and 96.00 %, respectively. Combined with binary classification probability unit regression, an appropriate sewage treatment mode for the village was determined with 87.00 % accuracy. The Analytic Hierarchy Process (AHP), combined with the Technique for Order Preference (TOPSIS) by Similarity to an Ideal Solution model, formed the basis for optimal treatment process selection under different emission standards. Verification was conducted in 542 villages across three counties of the Inner Mongolia Autonomous Region, focusing on the standard effluent effect (0.3773), low investment cost (0.3196), and high standard effluent effect (0.5115) to determine the best treatment process for the same emission standard under different needs. The annual environmental and carbon emission benefits of sewage treatment in these villages were estimated. This model matches village density, geographic feature, and social development level, and provides scientific support and a theoretical basis for rural sewage treatment decision-making.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"302-311"},"PeriodicalIF":6.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145175648","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Catalyst in-situ regeneration for polychlorinated biphenyl tail gas degradation and catalytic activity recovery mechanisms.","authors":"Zhichao Yun, Yuyang Bai, Fu Xia, Bingqing Wang, Qiyuan Liu, Yu Yang, Yonghai Jiang","doi":"10.1016/j.jes.2025.03.041","DOIUrl":"https://doi.org/10.1016/j.jes.2025.03.041","url":null,"abstract":"<p><p>To address the problems with catalytic degradation, such as poisoning and inactivation, a simple and efficient gas purging regeneration technique was developed for iron-based catalyst in-situ regeneration. Specifically, the effects of carrier gas types, regeneration temperatures, and granular activated carbon (GAC) addition on iron-based catalyst regeneration were investigated. The Fe<sub>3</sub>O<sub>4</sub>/γ-Al<sub>2</sub>O<sub>3</sub> regenerated at 550 °C with additional GAC and 15 % water vapor exhibited the optimal degradation efficiency towards polychlorinated biphenyls (PCBs), with an increase from 41.2 % to 93.5 %, compared with non-regenerated Fe<sub>3</sub>O<sub>4</sub>/γ-Al<sub>2</sub>O<sub>3</sub>. In addition, the 60-hour stability test revealed a well-recovered catalytic activity. During the Fe<sub>3</sub>O<sub>4</sub>/γ-Al<sub>2</sub>O<sub>3</sub> regeneration, the coke on the catalyst surface was oxidized and removed in the form of CO<sub>2</sub>, and meanwhile the oxidized Fe(III) was reduced into Fe(II) in the catalyst. This study provides a safe and efficient iron-based catalyst regeneration technology for PCB off-gas degradation and reveals the catalytic activity recovery mechanism during catalyst regeneration.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"271-279"},"PeriodicalIF":6.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145175772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ferroptosis involved in inhaled polystyrene microplastics leaded myocardial fibrosis through HIF-ROS-SLC7A11/GPX4 Pathway.","authors":"Danyang Huang, Huiwen Kang, Ziyan Liu, Wei Zhang, Jingyu Wang, Ziyan Wang, Guangyu Jiang, Ai Gao","doi":"10.1016/j.jes.2025.04.059","DOIUrl":"https://doi.org/10.1016/j.jes.2025.04.059","url":null,"abstract":"<p><p>The issue of microplastic (MPs) pollution has received increased attention in recent years. Studies have indicated that inhalation of microplastics may result in the cardiovascular harm. However, the specific mechanism remains to be elucidated. In this study, 5 µm polystyrene microplastics (PS-MPs) were employed to construct in vivo and in vitro exposure models to investigate the potential mechanisms of microplastic-induced cardiac fibrosis. In vivo model of respiratory exposure to MPs, echocardiography observed a decrease in systolic-diastolic function of the mouse heart, and myocardial tissue showed significant mitochondrial morphological abnormalities and myocardial fibrosis. In vitro models also revealed upregulation of fibrosis indicators in human cardiomyocytes AC16 cells. Transcriptome and RT-qPCR assay exposed that ferroptosis-related pathways were significantly gathered in the MPs group, with decreased expression of ferroptosis related genes SLC7A11 and GPX4. Liproxstatin-1 (Lip-1), a ferroptosis inhibitor, significantly ameliorated MPs-induced cardiomyocyte fibrosis and ferroptosis. We further demonstrated that inhibition of hypoxia-inducible factor α (HIF-α) and oxidative stress ameliorated PS-MPs-induced cardiomyocyte ferroptosis, and thus upregulation of the HIF pathway and oxidative stress may be the upstream mechanism of MPs-induced ferroptosis in myocardial fibrosis. Above all, our study demonstrated that MPs exposure resulted in cardiac fibrosis via the HIF-ROS-SLC7A11/GPX4 signaling pathway.</p>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"159 ","pages":"391-402"},"PeriodicalIF":6.3,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145176147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marine pollution bulletinPub Date : 2025-12-01Epub Date: 2025-08-08DOI: 10.1016/j.marpolbul.2025.118536
J Jiménez-Casero, J M Ruiz, J Bernardeau-Esteller, R García-Muñoz, J L Sánchez-Lizaso, L Marín-Guirao, M D Belando
{"title":"Cascading ecological impacts: from eutrophic coastal lagoon collapse to decline of Posidonia oceanica meadows in the Mediterranean.","authors":"J Jiménez-Casero, J M Ruiz, J Bernardeau-Esteller, R García-Muñoz, J L Sánchez-Lizaso, L Marín-Guirao, M D Belando","doi":"10.1016/j.marpolbul.2025.118536","DOIUrl":"10.1016/j.marpolbul.2025.118536","url":null,"abstract":"<p><p>Environmental degradation in coastal lagoons can propagate across ecosystem boundaries, triggering cascading impacts due to their strong connectivity with adjacent marine habitats. Understanding these cross-system dynamics is essential for effective coastal management. We investigate whether the ecological collapse of the Mar Menor coastal lagoon, following the 2015 eutrophication crisis, extended its impacts to the adjacent Mediterranean Sea, affecting an extensive Posidonia oceanica meadow. We characterized the physicochemical properties of Mediterranean waters influenced by lagoon outflow and analysed seagrass structural and physiological parameters (shoot density, meadow cover, shoot size, and nitrogen content and isotopic signatures) across 29 sites with historical data from 2004 onward. GIS tools were used to evaluate the spatial extent of lagoon water influence. Hypersaline, nutrient-rich waters extended up to 1.8 km offshore, affecting tens of hectares of seagrass habitat, as evidenced by δ<sup>15</sup>N values. Plants in this area showed signs of chronic stress, including nitrogen accumulation and reduced shoot size, likely resulting from hypersalinity, nutrient loading, and persistent light limitation. Structural degradation was also apparent, with shoot density and cover markedly lower than pre-crisis conditions. Long-term monitoring (2012-2020) confirmed that these changes followed the lagoon collapse and the extreme turbidity and reduced light availability associated with massive algal blooms. Our findings underscore the cascading impacts of anthropogenic pressures on interconnected coastal ecosystems. Given the widespread occurrence of eutrophication in Mediterranean lagoons, integrated management strategies that accounts for ecosystem connectivity are urgently needed to prevent irreversible impacts on valuable and slow recovering ecosystems such as P. oceanica meadows.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"221 ","pages":"118536"},"PeriodicalIF":4.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144812212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marine pollution bulletinPub Date : 2025-12-01Epub Date: 2025-08-09DOI: 10.1016/j.marpolbul.2025.118500
Georg Hanke, Miquel Canals, Ryota Nakajima, Melanie Bergmann, Francois Galgani, Daoji Li, George Papatheodorou, Christopher Kim Pham, Diva J Amon, Michela Angiolillo, Lene Buhl-Mortensen, Alessandro Cau, Pierpaolo Consoli, Jaime Selina Davies, Carlos Dominguez-Carrió, Carlos M Duarte, Alessandra Giorgetti, Bjørn Einar Grøsvik, Lars Gutow, Veerle A I Huvenne, Christos Ioakeimidis, Viktor Komorin, Guangpeng Liu, Lonny Lundsten, Iryna Makarenko, Anastasiia Martynova, Maria Eugenia Molina Jack, Tim W Nattkemper, Artur P Palacz, Marco Palma, Martina Pierdomenico, Maria Pogojeva, Marta Ruiz, Luis F Ruiz-Orejón, Josie Russell, Xiujuan Shan, Matias Valdenegro-Toro, Matteo Vinci, Nian Wei, Lucy C Woodall, Shoufeng Zhang
{"title":"Out of sight, but not out of mind: Key issues regarding seafloor macrolitter monitoring.","authors":"Georg Hanke, Miquel Canals, Ryota Nakajima, Melanie Bergmann, Francois Galgani, Daoji Li, George Papatheodorou, Christopher Kim Pham, Diva J Amon, Michela Angiolillo, Lene Buhl-Mortensen, Alessandro Cau, Pierpaolo Consoli, Jaime Selina Davies, Carlos Dominguez-Carrió, Carlos M Duarte, Alessandra Giorgetti, Bjørn Einar Grøsvik, Lars Gutow, Veerle A I Huvenne, Christos Ioakeimidis, Viktor Komorin, Guangpeng Liu, Lonny Lundsten, Iryna Makarenko, Anastasiia Martynova, Maria Eugenia Molina Jack, Tim W Nattkemper, Artur P Palacz, Marco Palma, Martina Pierdomenico, Maria Pogojeva, Marta Ruiz, Luis F Ruiz-Orejón, Josie Russell, Xiujuan Shan, Matias Valdenegro-Toro, Matteo Vinci, Nian Wei, Lucy C Woodall, Shoufeng Zhang","doi":"10.1016/j.marpolbul.2025.118500","DOIUrl":"10.1016/j.marpolbul.2025.118500","url":null,"abstract":"<p><p>Following a number of meetings devoted to knowledge sharing, identification of key issues, and discussing the best ways to move forward, a wide international expert community is now able to provide recommendations regarding the monitoring of seafloor macrolitter through observation and imaging. As the seafloor constitutes a major sink for marine litter including plastics, it is important to acquire robust and extensive data on litter distribution, abundance, types and size ranges across marine habitats. This should be done through widely agreed, harmonised, and non-destructive methods encompassing advanced technologies. Training and capacity building are essential elements in this endeavour. Both new and legacy imagery are needed to establish baseline assessments and trends. Informing policy-making is indispensable for effective action through upstream and targeted measures, with seafloor macrolitter (and megalitter) being a vital part of the evidence base for global mitigation measures.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"221 ","pages":"118500"},"PeriodicalIF":4.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144817074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marine pollution bulletinPub Date : 2025-12-01Epub Date: 2025-08-18DOI: 10.1016/j.marpolbul.2025.118560
I Donázar-Aramendía, C Megina, J M Miró, J Martín-Gallardo, J M Castillo, J C García-Gómez
{"title":"Trace metal contamination along an estuarine gradient under increasing anthropogenic pressure: A case study from the Guadalquivir estuary (SW Iberian Peninsula).","authors":"I Donázar-Aramendía, C Megina, J M Miró, J Martín-Gallardo, J M Castillo, J C García-Gómez","doi":"10.1016/j.marpolbul.2025.118560","DOIUrl":"10.1016/j.marpolbul.2025.118560","url":null,"abstract":"<p><p>This study investigates trace metal contamination in the Guadalquivir Estuary (SW Spain), a historically impacted system influenced by both past and ongoing mining. Over two years (2022-2023), sediment and water samples were collected at 15 stations along the estuarine gradient. The objective was to provide a comprehensive assessment of current contamination levels before the onset of discharges from newly approved mining projects. Results showed a clear spatial pattern, with concentrations of metals increasing upstream, particularly near the discharge point of the Cobre Las Cruces mine. Arsenic and zinc also exhibited secondary peaks at the estuary mouth, overlapping ecologically sensitive areas such as Doñana National Park, nursery grounds, and shellfish harvesting zones. These spatial patterns likely reflect both anthropogenic sources and hydrodynamic conditions favoring metal accumulation. Although concentrations did not exceed effects range-medium thresholds, ecological risk indices indicated considerable risk at several sites. Physicochemical parameters, particularly pH, salinity, and dissolved oxygen, seems to modulate metal mobility. In the upper estuary, hypoxia and low pH may enhance metal remobilization from sediments, especially during high freshwater discharges. Overall, the study highlights the estuary's vulnerability to metal pollution and the need for integrated, long-term monitoring including sediments, water, and biota. The results offer essential data to guide future impact assessments and inform environmental management.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"221 ","pages":"118560"},"PeriodicalIF":4.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144883148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marine pollution bulletinPub Date : 2025-12-01Epub Date: 2025-08-07DOI: 10.1016/j.marpolbul.2025.118533
Vinicius Roveri, Luciana Lopes Guimarães, Aírton Zogaib Rodrigues, Camilo Dias Seabra Pereira, Alberto Teodorico Correia
{"title":"A year of research into the occurrence and ecotoxicological risk assessment of cocaine and benzoylecgonine in a marine tropical bay (Santos, São Paulo, Brazil).","authors":"Vinicius Roveri, Luciana Lopes Guimarães, Aírton Zogaib Rodrigues, Camilo Dias Seabra Pereira, Alberto Teodorico Correia","doi":"10.1016/j.marpolbul.2025.118533","DOIUrl":"10.1016/j.marpolbul.2025.118533","url":null,"abstract":"<p><p>Monitoring of illicit drug contamination in coastal marine ecosystems is critical, particularly in regions such as Brazil, where inadequate wastewater treatment infrastructure coincides with high rates of drug consumption. In this context, this study aimed to investigate the temporal variability and ecotoxicological risks associated with the presence of cocaine (COC) and its main metabolite, benzoylecgonine (BEN), in the recreational coastal waters of Santos Bay, in southeastern Brazil. Four sampling campaigns were conducted between July 2023 and April 2024. COC and BEN were consistently detected across all samples, with concentrations ranging from 14.0 to 110.1 ng/L and 29.1 to 154.0 ng/L, respectively, indicating their widespread presence and environmental relevance as contaminants of emerging concern. Ecotoxicological risk assessment based on acute toxicity data revealed that both compounds pose significant risks across all tested trophic levels (algae, invertebrates and fish). Specifically, COC presented moderate risk to algae and fish, and high risk to crustaceans, while BEN showed moderate risk to algae and high risk to fish. In contrast, chronic toxicity assessments indicated low ecological risk for algae, with negligible risk for other organisms, for both compounds. Additionally, mixture toxicity evaluation of COC and BEN suggested a high acute risk, but a low chronic risk associated with their combined presence. The scarcity of ecotoxicological data for marine species, especially tropical organisms, remains a major limitation for comprehensive risk characterization. Therefore, this study highlights the urgent need for further toxicological research to support regulatory frameworks and environmental protection in marine tropical ecosystems.</p>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"221 ","pages":"118533"},"PeriodicalIF":4.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144804410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}