Environmental Monitoring and Assessment最新文献

{"title":"YOLO-CSM: an enhanced YOLOv11n-based framework for efficient microplastic detection in environmental monitoring","authors":"Songzhuang Yang,&nbsp;Yu Gao,&nbsp;Zhuoran Wang,&nbsp;Xuzhu Dong,&nbsp;Wenjun Zhou","doi":"10.1007/s10661-026-15983-x","DOIUrl":"10.1007/s10661-026-15983-x","url":null,"abstract":"<div><p>As an emerging environmental pollutant, the potential toxic effects of microplastics have become a topic of global concern. To address the issues with traditional detection methods— such as cumbersome operations, time-consuming processes, and reliance on human expertise—this study proposes an improved model based on YOLOv11n, named YOLO-CSM, for the efficient detection and classification of microplastics. First, partial multiscale convolutional modules (CSP-P) are introduced into the backbone and neck networks. By utilizing multiscale convolutional kernels and a cross-stage feature fusion mechanism, the model’s ability to extract fine-grained features and detect minute objects is enhanced. Second, an SKFP module based on shared and dilated convolutions is designed to expand the receptive field and improve multiscale feature representation capabilities. Finally, the MSR module in the detection head dynamically adjusts feature weights via an adaptive average pooling layer and combines this with fully connected layers to strengthen cross-scale feature fusion, thereby improving the model’s ability to recognize targets in complex backgrounds. Experimental results show that the improved model achieves mAP50 and mAP50–95 values of 92.06% and 44.08%, respectively. The complete model required 8.7 GFLOPs and achieved an inference speed of 143.85 FPS, indicating that it retained real-time detection capability despite the increase in computational complexity. Its overall performance surpasses that of the baseline YOLOv11n and other mainstream models, providing an efficient and reliable visual method for microplastic detection.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132768","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 dynamics of heavy metal concentrations from municipal solid waste landfill leachate in Varanasi: impact on groundwater quality and human health","authors":"Katina Chachei,&nbsp;Kirpa Ram","doi":"10.1007/s10661-026-16004-7","DOIUrl":"10.1007/s10661-026-16004-7","url":null,"abstract":"<div><p>Landfills remain a widely used and cost-effective method for municipal solid waste (MSW) disposal; however, they impose substantial environmental impacts through the release of contaminants into surrounding soil, water bodies including groundwater. This study investigated the seasonal dynamics of physico-chemical and heavy metals (HMs) in leachate (<i>n</i> = 26 each for raw and treated leachate) and nearby groundwater (<i>n</i> = 24) at a MSW landfill in Varanasi, India, during 2023–2024. Pollution indices, potential sources and human health risks were evaluated for populations residing within 1.5 km of the landfill. Most parameters in treated leachate complied with effluent discharge limit, except COD and Pb. However, elevated level of leachate pollution index (LPI) was observed in both raw (mean = 18.0) and treated leachate (mean = 9.7), exceeding the permissible limit of 7.5. In groundwater, most HMs, except Cu and Zn, exceeded drinking water standards, resulting in “very poor” water quality (WQI ≥ 200–300) and “high” heavy metal pollution (HPI &gt; 55) during monsoon and post-monsoon seasons. Health risks assessment indicated potential non-carcinogenic risk (HI &gt; 1) through ingestion for both adults (HI = 1.28) and children (HI = 2.94), while carcinogenic risks remained within acceptable range. Significant seasonal variation in Cu, Cr and Ni concentrations in raw leachate suggested metal-specific responses to local hydrogeological and climatic conditions, whereas groundwater showed stable concentrations (<i>p</i> &gt; 0.05). Principal component analysis indicated that HMs primarily originated from anthropogenic waste and agricultural activities. These findings underscore the need for long-term monitoring including seasonal variability to understand the fate, migration and impacts of MSW related HMs into the surrounding ecosystem.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132851","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":"Predicting soil recovery timelines in degraded mine lands using tree-based soil quality indices and asymptotic growth model","authors":"Abhishek Maitry,&nbsp;Gunjan Patil,&nbsp;Manoj Kumar Jhariya","doi":"10.1007/s10661-026-15972-0","DOIUrl":"10.1007/s10661-026-15972-0","url":null,"abstract":"<div><p>Ecological restoration of degraded mine soils remains a challenge in restoration processes. Precisely identifying the restoration trajectory is crucial for evaluating reclamation success, informing adaptive management decisions, and predicting the ecosystem’s future. This research suggests using a combined approach involving a tree-based Reclaimed Mine Soil Quality Index (RMSQI) and an asymptotic growth model to predict reclamation age in degraded mine soils. The study examined the soil physical and chemical conditions, biological activity, and enzymatic parameters under four dominant tree species: <i>Dalbergia sissoo</i>, <i>Azadirachta indica</i>, <i>Tectona grandis</i>, and <i>Albizia procera</i>. This was done at 5, 15, and 25 years after reclamation, along with assessments of non-planted soil and reference normal soil (RNS). As the age of the plantations increased, the RMSQI values rose from 0.230–0.249 at 5 years to 0.607–0.627 at 25 years. These values approached the RNS value of 0.656. Among the models used to predict RMSQI trends, the asymptotic growth model was the most accurate, with <i>R</i>² values over 0.99. Monte Carlo simulations indicated the median recovery period could range from 29 to 34 years to reach the reference soil condition. <i>D. sissoo</i> showed the quickest recovery time, while <i>T. grandis</i> demonstrated high variability in recovery duration. These findings provide a solid foundation for predicting reclamation timeframes and choosing suitable species for successful mine rehabilitation projects.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132781","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":"Environmental occurrence, spatial distribution, and probabilistic dietary risk assessment of cypermethrin and glyphosate residues in agricultural ecosystems of southwestern Nigeria","authors":"Omolara Jemimah Ojezele,&nbsp;Matthew Obaineh Ojezele","doi":"10.1007/s10661-026-15973-z","DOIUrl":"10.1007/s10661-026-15973-z","url":null,"abstract":"<div><p>Pesticide use in vegetable production raises concerns regarding environmental contamination, food safety, and human health, particularly where pesticide stewardship is inadequate. This study investigated the occurrence, spatial distribution, environmental partitioning, and dietary health risks of cypermethrin and glyphosate in water, sediment, soil, and <i>Amaranthus cruentus </i>collected from 30 sampling sites across three major vegetable-producing settlements in Oyo State, southwestern Nigeria. A total of 240 matrix-season samples were analysed using validated chromatographic methods, generating 480 independent pesticide-specific sample-level observations after analytical duplicates were averaged. Residue data were evaluated using hierarchical mixed-effects modelling, principal component analysis, Moran’s <i>I</i> spatial autocorrelation analysis, deterministic dietary risk assessment, empirical Monte Carlo simulation with 10,000 iterations, and a structured survey of vegetable farmers. Glyphosate predominated in soil and sediment, whereas cypermethrin occurred at comparatively higher concentrations in <i>A. cruentus</i>. Significant spatial autocorrelation was detected specifically for glyphosate in sediment (Moran’s <i>I </i>= 0.783, <i>p</i> = 0.0003). Deterministic assessment indicated acceptable dietary risk for adults for both pesticides and for glyphosate in children, whereas cypermethrin exceeded the hazard threshold in children (HQ = 1.818). Monte Carlo simulation showed HQ &gt; 1 in 15.09% of adult and 70.47% of child cypermethrin exposure scenarios, while no simulated glyphosate exposure exceeded this threshold. Despite substantial exceedance of selected EU spinach maximum-residue-limit benchmarks, farmer practices indicated limited pesticide stewardship and short pre-harvest intervals. These findings support strengthened pesticide stewardship, residue surveillance, farmer education, and regulatory oversight to improve food safety.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132849","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 dynamics and impacts of surface ozone pollution over Bhubaneswar","authors":"Monalin Mishra,&nbsp;Chinmay Mallik,&nbsp;Boopathy Ramasamy,&nbsp;Trupti Das","doi":"10.1007/s10661-026-15989-5","DOIUrl":"10.1007/s10661-026-15989-5","url":null,"abstract":"<div><p>This study investigates surface ozone (O₃) dynamics in Bhubaneswar (2020–2024) using in situ observations, satellite retrievals, and model-based diagnostics to assess seasonal variability, precursor sensitivity, and related health and agricultural impacts. Compared with the 2010–2015 period, where winter daytime O₃ reached ~ 75 ppb, the 2020–2024 record shows moderated winter daytime peaks (~ 51 ppb) but significantly elevated monsoon baselines. Specifically, 24-h monsoon means rose to ~ 25 ppb from ~ 12–15 ppb a decade ago, reflecting a shift toward sustained annual O₃ levels. Despite declining seasonal peaks, the frequency of episodic exceedances and estimated crop yield losses has increased. Precursor sensitivity analysis reveals a VOC-limited regime in winter (35%), transitioning to NO_x-limited during pre-monsoon (34%) and post-monsoon (29%) periods, with mixed conditions during monsoon (28%). Health risk assessment via the maximum daily 8-h average (MDA8) indicates frequent exceedances of the 50 ppb threshold, particularly in winter and pre-monsoon, signifying chronic exposure risks. Agricultural indices (AOT40, M7, M12, and SUM60) suggest substantial yield losses in paddy and rabi crops, especially during high O₃ seasons. Comparisons with Delhi (2024) highlight contrasting O₃ formation regimes, where Delhi remains largely VOC-limited due to persistent NO_x saturation. The findings emphasize the need for season- and region-specific emission controls, enhanced VOC monitoring, and AI-driven forecasting to support adaptive air quality management in urbanizing eastern India.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132847","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":"Effect of micro/nano-plastics on environment and recent advances in their detection strategies","authors":"Lourdes Jennifer S.,&nbsp;V. Manjuladevi,&nbsp;Jitendra Panwar,&nbsp;Sanjay Kumar Verma","doi":"10.1007/s10661-026-15995-7","DOIUrl":"10.1007/s10661-026-15995-7","url":null,"abstract":"<div><p>Plastic pollution has become the most pressing environmental challenge of twenty-first century due to extensive accumulation and long-term persistence of plastics across various ecosystems. The major threat associated with plastic waste is their progressive fragmentation into smaller-sized micro- and nano-plastics (MNPs), through physical, chemical and biological degradation processes. Owing to their small size, high surface-area-to-volume ratio and hydrophobicity, MNPs adsorb and transport a wide range of environmental contaminants, and interact with living systems at molecular and cellular levels, thereby posing a severe risk to the ecosystem. Despite their negative implications, the accurate detection and monitoring of MNPs remain a challenge. Conventional detection strategies are expensive, require sophisticated equipment and skilled personnel, and are not suitable for rapid on-site detection. These limitations underscore the urgent need for innovative detection strategies that offer high sensitivity, selectivity, and real-time analytical capabilities. In this context, the present review provides a systematic and comprehensive overview of sources, formation pathways and toxicological impacts of MNP in various systems. Furthermore, conventional methods for MNPs detection are critically evaluated highlighting their advantages and inherent limitations. Particular emphasis is given on biosensors, with a focus on aptamer-based platforms as promising tool for rapid, sensitive, and selective detection of MNPs. By systematically evaluating the MNP detection strategies, this review identifies key knowledge gaps, discusses challenges limiting the development and large scale applications of aptamer-based detection methods and outline the future research directions. Overall, this review provides valuable insights for researchers and policymakers to address the global challenge of MNPs pollution.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149132852","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":"Radiological impact of radionuclides in Moroccan food crops under semiarid conditions","authors":"Zineb Elaboudi,&nbsp;Samira El Aouidi,&nbsp;Radouan Saadi,&nbsp;Azzouz Benkdad,&nbsp;Zineb El Mouridi,&nbsp;Abdelmourhit Laissaoui,&nbsp;Abdelaziz Madinzi,&nbsp;Salah Souabi","doi":"10.1007/s10661-026-15992-w","DOIUrl":"10.1007/s10661-026-15992-w","url":null,"abstract":"<div><p>Internal exposure to ionising radiation occurs predominantly through the consumption of contaminated crops, and evaluating soil-to-plant radionuclide transfer is essential for radiological risk assessment. This study investigated radionuclide activity concentrations, soil-to-plant concentration ratios (CRs), and the potential annual effective dose from food ingestion in a semiarid agricultural region. High-resolution alpha- and gamma-spectrometry (HPGe) was used to quantify ²¹⁰Po, ²³⁴Th, ²²⁶Ra, ²²⁸Th, ²²⁸Ra, ²¹⁰Pb, ⁴⁰ K, and ¹³⁷Cs in soil and in commonly consumed crops, including coriander, red pepper, potato, onion, pomegranate, cardoon, beet, tomato, and eggplant. The soil activities ranged from 16.37 to 39.59, 6.21 to 29.15, 4.84 to 26.26, 9.37 to 46.04, 10.10 to 51.04, 5.92 to 31.39, 107.21 to 434.20, and 1.15 to 2.98 Bq/kg for ²¹⁰Po,²³⁴Th, ²²⁶Ra, ²²⁸Th, ²²⁸Ra, ²¹⁰Pb, ⁴⁰ K, and ¹³⁷Cs, respectively. In plants, activity concentrations were generally lower, varying between 0.12–4.76 Bq/kg for ²¹⁰Po, 0.36–5.89 Bq/kg for ²²⁶Ra, 0.22–1.61 Bq/kg for ²²⁸Th, and 386.33–3265.53 Bq/kg for ⁴⁰ K, whereas ²³⁴Th, ²²⁸Ra, ²¹⁰Pb, and ¹³⁷Cs were mostly below the detection limits. The concentration ratios ranged from 0.01–0.14 for ²¹⁰Po, 0.02–0.43 for ²²⁶Ra, 0.01–0.17 for ²²⁸Th, and 1.02–20.03 for ⁴⁰ K, with elevated values observed in cardoon and eggplant. Correlation analysis highlighted strong interrelationships among radionuclides and demonstrated that transfer processes are controlled by soil physicochemical properties, particularly organic matter content, cation exchange capacity, and exchangeable cations. In contrast, carbonate content and salinity tend to restrict radionuclide mobility. These findings enhance understanding of radionuclide behaviour under semiarid climatic conditions and support improved radiological risk assessment and environmental protection strategies.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098924","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":"Microplastic contamination in Ramsar wetlands: a systematic review of global sources, ecological impacts, and policy implications","authors":"Udoy Chandra Das,&nbsp;Md. Shariful Islam Shuvo,&nbsp;Ridri Ghosh,&nbsp;Mst. Farzana Akter,&nbsp;Md. Ab. Hannan,&nbsp;Mahima Ranjan Acharjee,&nbsp;Labida Binta Mehedi,&nbsp;Susmita Islam,&nbsp;Pranta Saha,&nbsp;Helena Khatoon,&nbsp;Md. Habibullah-Al-Mamun,&nbsp;Md. Hasan Faruque","doi":"10.1007/s10661-026-15994-8","DOIUrl":"10.1007/s10661-026-15994-8","url":null,"abstract":"<div><p>Ramsar wetlands, globally recognized for their ecological, hydrological, and socio-economic significance, are increasingly threatened by microplastic (MP) contamination. Despite mounting evidence of MPs in freshwater and coastal environments, no global synthesis has focused on MP contamination in Ramsar-designated wetlands. This study presents the first systematic global review of MP contamination in Ramsar wetlands by compiling peer-reviewed studies (April 2012–May 2025). This review addresses MP sources, transport pathways, contamination levels in surface water, sediment, and biota especially in threatened species, ecosystem impacts, and mitigation efforts. Key findings from quartile analysis and descriptive statistics reveal that MPs are ubiquitous across Ramsar wetland compartments, with spatial patterns showing higher contamination in Asia, North and South America, and lower levels in Europe and Australia. Certain countries’ Ramsar wetlands consistently emerged as hotspots across all three environmental compartments, surface water, sediments, and biota, including Ecuador, China, India, and Ghana. Temporal trends indicate rising MP loads over the past decade, and seasonal peaks linked to runoff in some regions. Polyethylene and polypropylene were the most common polymers (&gt; 80%), with fibres and fragments as the predominant morphotypes. Sediments generally harboured the highest MP concentrations, while biota exhibited variable uptake. These results underscore an urgent need for standardized monitoring methods and more geographically balanced research, especially in under-studied regions such as Africa and South America, to enable robust global comparisons. We recommend prioritizing plastic source reduction, enhancing international collaboration, and integrating MP pollution control into wetland conservation policies to safeguard the ecological integrity of Ramsar wetlands.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098925","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":"Trophic drivers of lead and cadmium bioaccumulation in waterbird eggshells: a non-invasive assessment at Gandoman Wetland, a Ramsar site in Iran","authors":"Mohammadreza Ahmadi,&nbsp;Rasool Zamani-Ahmadmahmoodi,&nbsp;Seyed Mehdi Amininasab,&nbsp;Atefeh Chamani","doi":"10.1007/s10661-026-15984-w","DOIUrl":"10.1007/s10661-026-15984-w","url":null,"abstract":"<div><p>Anthropogenic expansion has intensified heavy metal pollution in aquatic ecosystems, posing a severe threat to avian biodiversity. This study utilizes bird eggshells as non-invasive biomarkers to assess lead (Pb) and cadmium (Cd) contamination in the Gandoman Wetland, Iran. During the 2023 breeding season, eggshells were collected from three species with distinct ecological roles: the common tern (<i>Sterna hirundo</i>), the black-necked grebe (<i>Podiceps nigricollis</i>), and the Eurasian coot (<i>Fulica atra</i>). Metal concentrations were determined using an Agilent 240FS AA atomic absorption spectrometer (Agilent Technologies, USA). The results revealed that Pb concentrations consistently exceeded Cd levels across all species, a phenomenon attributed to the ionic mimicry of Pb²⁺ with Ca²⁺ during shell mineralization. Notably, mean concentrations for both metals significantly exceeded established hazard thresholds (Pb: 4 mg/kg; Cd: 2 mg/kg) in all species. The common tern, a high-trophic level piscivore, exhibited the highest mean concentrations (Pb: 424.29 mg/kg; Cd: 23.39 mg/kg), while lower concentrations were recorded in the black-necked grebe (Pb: 174.60 mg/kg; Cd: 1.75 mg/kg) and the Eurasian coot (Pb: 44.58 mg/kg; Cd: 2.38 mg/kg). One-way ANOVA confirmed significant interspecific differences (<i>P</i> &lt; 0.05), supporting the trophic level hypothesis of bioaccumulation. Pearson correlation analysis showed nonsignificant relationships between Pb and Cd, suggesting distinct pollution sources, likely industrial effluents for Pb and agricultural runoff for Cd. These findings characterize Gandoman Wetland as a high-risk environment and highlight the urgent necessity for stringent pollution control and management strategies to safeguard wetland-dependent bird populations.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098927","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":"Regime shifts in South Florida groundwater: distinguishing upstream recharge from coastal sea level influences (1997–2022)","authors":"Ethiopia B. Zeleke,&nbsp;Assefa M. Melesse,&nbsp;René M. Price,&nbsp;Tania Islam,&nbsp;Shimelis Dessu,&nbsp;Theresa Strazisar,&nbsp;Steven Krupa,&nbsp;Alexandra Hoffart,&nbsp;Fred Sklar","doi":"10.1007/s10661-026-16000-x","DOIUrl":"10.1007/s10661-026-16000-x","url":null,"abstract":"<div><p>Groundwater dynamics in South Florida play an important role in shaping the hydrologic balance of the region. This study investigated long-term trends in groundwater elevation, surface water stages, and their interactions across Water Conservation Areas 3A and 3B, Everglades National Park, coastal watersheds, and Florida Bay. Time series decomposition of long-term groundwater elevation (1997 to 2022) was used to identify trends, seasonal patterns, and anomalies. Analysis of groundwater elevations revealed statistically significant regime shifts defining distinct phases of decrease (2005–2015) and increase (2016–2022) associated with changes in rainfall patterns and water management. Average groundwater elevation has increased in recent years, with upstream areas showing stronger associations with surface water flow volumes, while coastal areas showed stronger correlations with sea level changes. This distinction suggests separate hydrological mechanisms for the observed trends: upstream recharge likely dominates in freshwater marshes, whereas coastal areas are associated with sea level variability. Groundwater levels in coastal areas now remain above the ground surface even during dry periods, associated with external factors such as sea level rise. The relationships between surface water stages and groundwater elevations in most parts of the study area were linear, whereas coastal regions, parts of the Water Conservation Areas 3A and 3B and northern parts of the Taylor Slough were nonlinear. In Florida Bay, sea level variability was a dominant driver of surface water variability (88.3% relative importance), while freshwater delivery through creek discharge (2.2%) and rainfall (2.6%) showed small but measurable contributions, along with groundwater elevation (2.4%) reflecting regional hydrologic conditions.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10661-026-16000-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098926","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}