Environmental Monitoring and Assessment最新文献

{"title":"Long-term monitoring of growing season characteristics and heat stress in Serbia.","authors":"Nataša Martić-Bursać, Marko Ivanović, Nikola Milentijević, Milena Gocić, Ljiljana Stričević","doi":"10.1007/s10661-025-14249-2","DOIUrl":"10.1007/s10661-025-14249-2","url":null,"abstract":"<p><p>Long-term monitoring of temperature thresholds and heat stress indicators reveals significant shifts in the growing season across Serbia. Using daily temperature data from 24 meteorological stations, this study analyzes changes in the onset, cessation, and duration of growing seasons defined by 5 °C, 10 °C, and 15 °C thresholds over two climatological periods (1961-1990 and 1991-2020). Trends in Growing Degree Days (GDD) and heat stress indicators, including the Heat Stress Index (HSI) and Days of Heat Stress (Dhs), further illustrate the impacts of rising temperatures. Results indicate a significant advancement in the start of the growing season, averaging - 7.8, - 4.4, and - 8.7 days for the respective thresholds. The duration of warm-season conditions (≥ 15 °C) has increased across all stations, with the most pronounced extensions in mountainous regions, where high-altitude ecosystems now exhibit thermal characteristics similar to past lowland climates. Rising GDD values suggest enhanced thermal accumulation, extending vegetation activity but also increasing risks such as hydrological stress, altered species composition, and shifting pest dynamics. The study highlights the intensification of extreme heat events, particularly in 2007 and 2012, marking peak heat stress conditions across Serbia. These findings align with broader Southeastern and Central European climate trends, underscoring the need for expanded environmental monitoring through meteorological networks, remote sensing, and cross-regional climate data integration. Strengthening long-term climate and phenological observation systems is essential for understanding climate-driven ecological changes and developing sustainable adaptation strategies.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"754"},"PeriodicalIF":2.9,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144300890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Analysis of the characteristics of the fish community structure and aquaculture capacity in the medium-sized reservoir-take the Qiaoying Reservoir as the case, China.","authors":"Xiaoyu Li, Yi Li, Bonian Shui, Chengye Hu","doi":"10.1007/s10661-025-14205-0","DOIUrl":"https://doi.org/10.1007/s10661-025-14205-0","url":null,"abstract":"<p><p>This study investigates the ecological dynamics of Qiaoying Reservoir, a medium-sized multi-purpose water body in Zhejiang Province, China, through seasonal (spring and autumn 2022) analyses of aquatic communities, water quality, and Ecopath modeling. Fish community structure showed seasonal shifts, with Cypriniformes dominating (68.75% in spring, 88.89% in autumn), while zooplankton composition transitioned from Cladocera-dominated (38.46%) to Copepoda-dominated (35.71%) between seasons. Phytoplankton biomass and density exhibited consistent spatial patterns (higher in southeastern zones). Water quality met Class I standards, with stable physicochemical parameters. Ecopath modeling revealed simplified trophic interactions (Connectance Index, 0.333; Omnivory Index, 0.136), with 76% of energy flow concentrated at trophic level I (primary producers). The low inter-trophic transfer efficiency (total 2.25%) highlighted imbalances, notably insufficient grazer pressure on phytoplankton. Recommendations include diversifying fish stocking (Hypophthalmichthys nobilis, Cyprinus carpio, Hypophthalmichthys molitrix, Carassius auratus, and Megalobrama terminalis) to enhance trophic regulation, adjusting harvest strategies. This integrated approach supports sustainable fisheries management by aligning ecological capacity with socioeconomic needs, emphasizing the role of filter-feeding species in maintaining water quality and ecosystem stability.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"751"},"PeriodicalIF":2.9,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Heatwave dynamics in Türkiye: a long-term spatiotemporal analysis of frequency, duration, and intensity (1970-2022).","authors":"Hasan Tatli, Hıdır Serkendiz","doi":"10.1007/s10661-025-14246-5","DOIUrl":"https://doi.org/10.1007/s10661-025-14246-5","url":null,"abstract":"<p><p>This study examines the spatial and temporal characteristics of heatwaves (HWs) in Türkiye, a region predominantly characterized by an arid-semiarid macro-Mediterranean climate, which is susceptible to frequent droughts. Using daily maximum temperature data from 277 meteorological stations across Türkiye (1970-2022), the research analyzes HW frequency, duration, and intensity, adopting a definition aligned with the World Meteorological Organization (WMO). Temporal trends were assessed using statistical trend analysis, while spatial patterns were evaluated through spatial autocorrelation methods. The findings indicate a statistically significant increase in the frequency of heatwaves over time, with the annual average number of events rising from approximately 5 in the 1970s to over 10 since the 2000s. This trend is particularly evident in the Marmara, Aegean, and Black Sea regions. Trend analysis results reveal that heatwave duration has exhibited a statistically significant increase throughout the study period in 96.4% of the analyzed stations. The most pronounced increases have been observed in the Marmara, Black Sea, and Eastern Mediterranean regions. These results underscore the growing impact of climate change on Türkiye and highlight the need for targeted adaptation and mitigation strategies. Insights from this study can inform the development of early warning systems, resource allocation, and public health preparedness, ultimately enhancing community and ecosystem resilience to climate-related challenges.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"752"},"PeriodicalIF":2.9,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"An in silico approach to prioritize emerging contaminants in Indian sewage treatment plants.","authors":"Abirami Balakrishnan, Kevin Vinoth, Sowmiya Rajan Jeyakumaran, Varshini Sendhilkumar, Prachi Paharwar, Balakrishnan Paramasivam","doi":"10.1007/s10661-025-14115-1","DOIUrl":"https://doi.org/10.1007/s10661-025-14115-1","url":null,"abstract":"<p><p>The present study aims at developing a novel in silico prioritization approach for emerging contaminants based on their environmental risk, persistence, bioaccumulation, toxicity (PBT) potential, and estimation of their removal efficiency in sewage treatment plants (STPs) using STPwin model. (i) Pharmaceutical and personal care products (PPCP), (ii) pesticides, (iii) parabens and phthalates, (iv) and industrial chemicals are the four major classes of ECs considered in this study. Measured environment concentration (MEC) of these ECs reported in literature were collected and risk quotient (RQ) is calculated from the MECs. The PBT assessment is performed as per European Chemical Agency (ECHA) 2008 guidelines. Estimation of removal of the ECs was performed with the help of STPwin module of EPI Suite 4.11 software. With these three criteria, the ECs were prioritized. The top most prioritized class of ECs are PPCPs and pesticides in which triclosan and dichlorodiphenyltrichloroethane (DDT) stand first, respectively with mean RQ value for triclosan being 0.43343 for fish; 0.0596 for Daphnia; and 0.04334 for algae. DDT with mean RQ values of 0.3768 for algae; 1.588 for fish; and 1.71 for Daphnia. It is observed that the order of high risk posing EC classes are PPCP > Pesticides > Parabens and Phthalates > industrial chemicals for the studied EC class in the Indian scenario. From the PBT assessment, it is observed that (i) triclosan from PPCPs and (ii) aldrin, methoxychlor, heptachlor, and dichlorodiphenyltrichloroethane among pesticides come under the class of PBT among the studied ECs. The STPwin analysis shows that among the studied class of ECs, pesticides and industrial chemicals can be removed by conventional treatment, whereas PPCPs, parabens, and phthalates need special attention and require specific treatment methods to degrade them by modifying existing STP design. This study provides a newer methodology by incorporating risk quotient, PBT assessment, and STPwin analysis to frame regulations on chemical usage.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"750"},"PeriodicalIF":2.9,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 environmental monitoring and assessment: evaluating soil quality changes using a parametric index in smallholder farming systems.","authors":"Safirat Sani, Sani Abubakar Mashi, Clement Didi Chup, Elizabeth Dorsuu Jenkwe","doi":"10.1007/s10661-025-14234-9","DOIUrl":"https://doi.org/10.1007/s10661-025-14234-9","url":null,"abstract":"<p><p>Soil quality evaluation (SQE) is a vital aspect of environmental assessment and monitoring. Traditional SQE methods often use composite indices that can mask changes in individual soil properties, limiting detailed understanding of soil degradation. Effective management, however, requires parameter-specific insights. This study employs a novel Parametric Soil Quality Index (PSQI) to assess the impact of various cropping systems on individual soil properties, quantify percentage changes, and inform targeted soil quality improvements in smallholder farming systems. The PSQI captures specific variations across six land-use types-including sesame, guinea corn, yam, maize + yam mixed cropping, maize monocropping, and a natural forest control-providing a more precise tool for evaluating soil degradation and guiding site-specific interventions. Five hundred seventy-six composite soil samples were collected from these plots in Abuja, Nigeria. Chemical properties were analyzed using t-tests, one-way ANOVA, percentage equivalence, and percentage change to compare effects by soil depth and cropping system relative to the control. Results show significant soil quality degradation under cropping systems compared to natural forest, with soil organic carbon and total nitrogen declining by over 50% in some systems, especially sesame and guinea corn. Mixed cropping (yam + maize) better maintains nutrients such as potassium and cation exchange capacity. Changes in available phosphorus, exchangeable cations, and base saturation further reflect degradation due to intensive cropping and residue removal. The PSQI effectively quantifies these trends, highlighting both declines and improvements. The study recommends integrated soil fertility management, organic amendments, mixed cropping, precision farming, and agroforestry practices to sustain soil productivity.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"753"},"PeriodicalIF":2.9,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144293118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Island mass effect alters the biogeochemistry of the coastal waters around Grande Island in the Eastern Arabian Sea.","authors":"Sethu Lakshmi, Suhas Shetye, Kuniyil Nandakumar, Anil Pratihary, Siby Kurian","doi":"10.1007/s10661-025-14179-z","DOIUrl":"https://doi.org/10.1007/s10661-025-14179-z","url":null,"abstract":"<p><p>Coastal oceans are highly dynamic regions of ecological and economic importance that are vulnerable to different stressors. We investigated the spatio-temporal variations in the biogeochemistry of the coastal waters surrounding an archipelago in the Eastern Arabian Sea. Seawater was collected from six stations (S1-S6) around the Grande Island archipelago, located off the Goa coast, during the late Summer monsoon (SM, September 2022), Post-monsoon (PoM, November 2022), Winter monsoon (WM, January 2023), and Pre-monsoon (PrM, April 2023). We also sampled station G3, off Goa, during similar time points, as a station away from the island. Seasonal changes in the biogeochemistry were evident in the region. The bottom waters around the island showed larger variations compared to the surface seasonally. The bottom water was cold, highly saline, low pH, and had hypoxic to anoxic conditions during SM. By PrM, the water column was well-mixed with high-temperature, oxic, and highly saline seawater with a pH of roughly 8.0. A comparison of the chlorophyll-a concentration around the island to the G3 station indicated that the waters surrounding the island were more productive, possibly due to the micronutrient input (dissolved iron) from the landmass and active physical forcing around the island. There was a significant difference in biogeochemistry between the island's southern and northern sides. Therefore, we conclude that the island mass effect alters the biogeochemical conditions around the island and in the coastal seas, which in turn can impact the highly sensitive organisms such as coral reefs and other benthic organisms.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"749"},"PeriodicalIF":2.9,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Temporal and spatial variation of nutrient stoichiometry in coastal salt marshes dominated by Spartina alterniflora in eastern China: comprehensive effects of vegetation and tidal flooding.","authors":"Wang Jinshu, Huang Xiaoyu, Li Huanhuan, Wang Jinxin","doi":"10.1007/s10661-025-14189-x","DOIUrl":"https://doi.org/10.1007/s10661-025-14189-x","url":null,"abstract":"<p><p>To better understand carbon, nitrogen, and phosphorus dynamics within small-scale gradients of tidal and vegetation interaction, 13 study sites were established along three transects (near, far, and along a tidal creek) within a salt marsh in northern Jiangsu, China, and soil samples were collected during both the growing and non-growing season; the soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP) contents were measured. Spatiotemporal variation in SOC, TN, and TP in coastal salt marsh soils was influenced not only by the physical and chemical properties of the elements themselves, but also by the distribution of local vegetation and repetitive tidal action. Complex interactions between the vegetation and tidal flooding determined spatiotemporal patterns in SOC, TN, and TP. Compared to tidal effects, vegetation effects were more stable and persistent. The spatial distributions of SOC and TN in salt marsh soils (sediment) were relatively consistent, with both SOC and TN levels being higher in vegetated zones as compared to the mudflat. Nutrient levels were also higher further from the tidal creek, and the SOC/TN content was maximized in the S. alterniflora marsh. The TP content was higher in the tidal-creek transect versus the other two transects; among sites, the TP content was higher in the mudflat than the vegetated sites. Within the vegetated sites, the S. alterniflora marsh had the highest TP levels. Seasonal variation in SOC, TN, and TP was minimal compared to differences among vegetated sites within each transect. Differences between transects were also minimal compared to those among vegetated sites within transects. Significant spatial variation was identified in C:N:P stoichiometry across the study area; the comprehensive effects of vegetation and tidal flooding on nutrient stoichiometry in coastal salt marshes dominated by S. alterniflora in eastern China are elevation-dependent. The N/P ratio measured 0.62 ± 0.41, suggesting that plant growth in the study area may be nitrogen limited. Together, the local vegetation and repetitive tidal flooding shaped SOC, TN, and TPs in salt marsh soils, producing similar patterns in nutrient element accumulation, constraining the geochemical behavior and fate of elements, and controlling the spatiotemporal distribution of soil elements. Therefore, it is critical to consider interactions between vegetation and tidal effects, as well as the nonlinear relationship between nutrient input and ecological response in salt marsh ecosystems when managing coastal zones, supporting ecosystem functioning, and conducting ecological risk assessments.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"747"},"PeriodicalIF":2.9,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144264944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Micro-arc plasma decomplexation of Cu-EDTA by TC4 liquid-phase discharge: underneath mechanisms.","authors":"Liu Yuchang, Wang Sheng, Liu Haoming, Cheng Xin, Qin Huiyi, Wang Haoxv, Zhang Yali","doi":"10.1007/s10661-025-14141-z","DOIUrl":"https://doi.org/10.1007/s10661-025-14141-z","url":null,"abstract":"<p><p>The paper discusses a method to treat wastewater (Cu-EDTA, copper ethylenediamine tetra acetic acid) using micro-arc plasma by combining micro-arc oxidation technology and advanced oxidation technology from the fields of material surface treatment and environmental engineering. The aim is to change copper ions from a complex state to a free state. The decomplexation rate was up to 73.82%, and the mineralization rate was up to 32.7% for the samples after 100 min of treatment with micro-arc plasma. Cu-EDTA decomplexation is divided into the decomposition of EDTA and free copper ion reactions. The active substance reacts with Cu-EDTA to generate intermediates, leading to the mineralization of EDTA through continuous decomposition and synthesis. Meanwhile, copper ions complete the decomplexation and react with other anions in the solution and on the anode surface. This study not only provides a new wastewater treatment technology but also improves the theoretical study of micro-arc plasma on organic matter.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"748"},"PeriodicalIF":2.9,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144265010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Soil stoichiometry patterns and their driving mechanisms: exploring nutrient dynamics in eucalyptus plantations in Malakand Division.","authors":"Tareef Ullah, Nasrullah Khan, Rafi Ullah, Zakir Ullah, Mohammad N Uddin, Mohsin Kazi","doi":"10.1007/s10661-025-14182-4","DOIUrl":"https://doi.org/10.1007/s10661-025-14182-4","url":null,"abstract":"<p><p>This study was conducted to investigate the impact of Eucalyptus plantations on soil physicochemical properties and nutrient stoichiometry in the Malakand Division, Pakistan. Four vegetation groups were evaluated: Eucalyptus-dominated forest, Eucalyptus-moderately distributed forest, Eucalyptus-low forest, and non-Eucalyptus forest. The study hypothesized that Eucalyptus-dominated forests would have lower soil nutrient contents, mainly total carbon (TC) and total nitrogen (TN), Although nutrient imbalances were observed, the variations were not statistically significant. Soil texture differed significantly different, with a higher sand content in Eucalyptus-dominated forests, whereas clay and silt were more predominant in non-Eucalyptus forests. Additionally, chemical properties such as pH, electrical conductivity, and phosphorus content varied significantly, influencing soil fertility. The C:N, C:P, and N:P ratios strongly differed among the vegetation groups, indicating alterations in soil nutrient cycling at Eucalyptus plantation sites. Redundancy analysis (RDA) revealed that soil textural properties such as clay (r = -0.87), silt (r = -0.74) and climatic factors such as precipitation (r = 0.33) and RH2M (r = -0.55) are important determinants of soil stoichiometry. Structural equation modeling (SEM) showed that geographic factors i.e., latitude, longitude, and elevation, negatively affect soil nutrients, including total carbon (-0.83), total nitrogen (-0.52), and total phosphorus (-1.04). The results revealed the negative impact of Eucalyptus plantations on soil nutrient dynamics, suggesting the need for sustainable land management strategies to mitigate soil degradation and maintain ecosystem balance. This study addresses the need for sustainable land use policies, such as afforestation and soil restoration practices, to reduce nutrient disturbance and maintain ecosystem balance. Further research is needed to examine soil nutrient stoichiometry and the broader ecological impacts of invasive Eucalyptus plantations in order to enlighten effective conservation and land management policies.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"746"},"PeriodicalIF":2.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144257038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Seasonal variability, antibiogram and genetic diversity of Vibrio spp. recovered from effluent discharge of wastewater treatment plants and their receiving rivers in Durban, South Africa.","authors":"Kerisha Ramessar, Ademola O Olaniran","doi":"10.1007/s10661-025-14171-7","DOIUrl":"10.1007/s10661-025-14171-7","url":null,"abstract":"<p><p>Wastewater treatment plants (WWTPs) play a critical role in mitigating microbial contamination in aquatic environments. However, the persistence of pathogenic bacteria, including Vibrio spp., in treated effluents poses a significant public health risk. This study investigates the prevalence, seasonal variation, antibiotic resistance, and genetic diversity of Vibrio spp. in effluents from four WWTPs in Durban, South Africa and their receiving rivers. The removal efficiency of Vibrio spp. varied significantly across WWTPs, ranging from 76.41 to 100%, with biofilter-based systems, demonstrating the highest efficacy. Molecular identification confirmed Vibrio vulnificus and Vibrio alginolyticus as dominant species. Antibiotic susceptibility testing revealed widespread resistance, particularly to beta-lactams, with multidrug resistance (MDR) detected in 98% of isolates. The multiple antibiotic resistance index (MARI) values exceeded 0.2 in 99.5% of isolates, indicating significant antibiotic exposure. Genetic fingerprinting via repetitive extragenic palindromic PCR (REP-PCR) identified identical strains in effluent and downstream river samples, implicating treated effluent as a significant contamination source. These findings underscore the urgent need for improved wastewater treatment processes and stringent regulatory monitoring to mitigate the environmental and public health risks associated with antimicrobial-resistant Vibrio spp. Future research should focus on whole-genome sequencing to characterise resistance genes and assess the long-term impact of Vibrio contamination on aquatic ecosystems and human health.</p>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 7","pages":"745"},"PeriodicalIF":2.9,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12152032/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144257037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}