Environmental Monitoring and Assessment最新文献_第3页

Satellite monitoring of population-weighted surface heat and blue-green resource mismatch across four Chinese cities 中国4个城市人口加权地表热量与蓝绿资源失配的卫星监测

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-17 DOI: 10.1007/s10661-026-16084-5

Weiying Pu, Guojian Li, Xueyu Tan, Ziang Li

{"title":"Satellite monitoring of population-weighted surface heat and blue-green resource mismatch across four Chinese cities","authors":"Weiying Pu, Guojian Li, Xueyu Tan, Ziang Li","doi":"10.1007/s10661-026-16084-5","DOIUrl":"10.1007/s10661-026-16084-5","url":null,"abstract":"<div><p>Urban heat monitoring often treats surface temperature, land cover, and residential population distribution as separate products, limiting assessment of where high thermal load coincides with limited blue-green land cover resources. We harmonized Landsat 8/9 land surface temperature, Dynamic World land cover probabilities, JRC surface water, WorldPop population, and Global Human Settlement Layer morphology on a 500 m equal-area grid for Harbin, Beijing, Wuhan, and Shenzhen during summers 2020–2024. ERA5-Land city summaries described broad climate context but were excluded from grid-level prediction. The framework combined residentially weighted indicators with an exact-count 3 km spatial block null, sensitivity tests, and spatially validated gradient boosting. High-heat/low-blue-green cells comprised 8.8–14.1% of urban core grids, 1.52–1.63 times the block-null expectation. The highest population density decile was 4.19–5.23 °C warmer than the lowest, and this direction persisted across population and boundary alternatives; older adult gradients varied by city. Primary spatial cross-validation achieved coefficients of determination of 0.632–0.896 for city models and 0.880 for the pooled model. Built form, Landsat spectral variables, and pooled city indicators dominated prediction, while blue-green variables provided smaller conditional predictive increments and transfer to fully held-out years or cities was limited. The framework supports repeatable identification of persistent residential surface heat and blue-green resource mismatches for targeted follow-up.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189978","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}

引用次数: 0

Linking transect-based field observations with Sentinel-2 indices to characterize post-fire conditions in a Mediterranean Pinus brutia forest 将基于样带的野外观测与Sentinel-2指数相结合，以表征地中海油松森林的火灾后条件

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-16 DOI: 10.1007/s10661-026-16023-4

Salih Malkoçoğlu, Ergün Kahveci

{"title":"Linking transect-based field observations with Sentinel-2 indices to characterize post-fire conditions in a Mediterranean Pinus brutia forest","authors":"Salih Malkoçoğlu, Ergün Kahveci","doi":"10.1007/s10661-026-16023-4","DOIUrl":"10.1007/s10661-026-16023-4","url":null,"abstract":"<div><p>The field-level ecological counterparts of post-fire spectral indices remain poorly understood, particularly when surface-cover components are evaluated separately. This study evaluated the relationship between Sentinel-2-based dNBR, RdNBR, and NDVI indices and transect-based ground cover components in a <i>Pinus brutia</i>–dominated Mediterranean forest following the 2025 Köyceğiz-Akköprü fire. Surface conditions were recorded at 1-m intervals along two orthogonal 10-m transects in each of 73 plots, yielding 1601 point observations assigned to seven mutually exclusive surface-cover categories. Regression models showed that each index was associated with different field or environmental predictors. The NDVI model had the highest explanatory power and was positively associated with live cover (adj. <i>R</i><sup>2</sup> = 0.439; <i>β</i> = +0.369). The dNBR model was associated primarily with pre-fire tree cover and slope. These results indicate that dNBR corresponds mainly to the pre-fire structural and topographic context, whereas NDVI corresponds to post-fire live cover and early recovery signals. The negative association between RdNBR and needle litter suggests that relative fire severity indices may be sensitive to residual organic-cover components. Spatial robustness analyses accounting for residual spatial dependence retained these principal associations. Consequently, dNBR, RdNBR, and NDVI are not interchangeable indicators representing the same aspect of post-fire surface conditions, but rather indices that complementarily reflect different ecological components. This study demonstrates that transect-based land cover measurements in Sentinel-2-based post-fire assessments provide a practical field-reference approach that improves the ecological interpretation of spectral indices. </p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189883","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}

引用次数: 0

New test method for determination of extractable per- and polyfluoroalkyl substances (PFAS) in consumer products by solvent extraction followed by liquid chromatography tandem mass spectrometry (LC–MS/MS) 溶剂萃取-液相色谱-串联质谱法（LC-MS /MS）测定消费品中可提取的全氟烷基和多氟烷基物质（PFAS）的新试验方法

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-16 DOI: 10.1007/s10661-026-16031-4

Shih-Hung Yang, Logan Miller, Rachel Hale, William Lipps, Michael Deible

{"title":"New test method for determination of extractable per- and polyfluoroalkyl substances (PFAS) in consumer products by solvent extraction followed by liquid chromatography tandem mass spectrometry (LC–MS/MS)","authors":"Shih-Hung Yang, Logan Miller, Rachel Hale, William Lipps, Michael Deible","doi":"10.1007/s10661-026-16031-4","DOIUrl":"10.1007/s10661-026-16031-4","url":null,"abstract":"<div><p>Per- and polyfluoroalkyl substances (PFAS) are widely used in consumer products, raising health and environmental concerns due to their potential for toxicity and bioaccumulation. Although methods for PFAS extraction and analysis exist, few are tailored for consumer products, and most rely on time-consuming and costly solid-phase extraction (SPE). This study introduces a new SPE-free method for extracting and analyzing PFAS in six consumer product categories: paper, plastics, fabrics, cosmetics, metals, and “other”. The method applies co-solvation extraction, large-volume injection, and co-injection of 0.1% acetic acid, significantly enhancing detection limits and PFAS peak shapes. Recoveries of surrogate standards in plastics and metals met quality control criteria (50–150%). However, paper, fabric, cosmetic, and “other” matrices adversely affected the recoveries of fluorotelomer sulfonic acids and electrochemical fluorination-derived PFAS surrogates. Recoveries of native PFAS spikes in polymer containers and aluminum foil ranged from 82 to 140%, except for 3:3 FTCA and 8:2 diPAP. Meanwhile, more complex matrices including, cosmetic pressed powder, food packaging, athletic tape, and dress shirt, substantially impacted the recoveries of multiple spiked PFAS. Among the extraction methods evaluated, Soxhlet extraction yielded the highest PFAS concentrations but was prone to matrix interference and potential PFAS artifacts, limiting its suitability for PFAS analysis. In contrast, cryo-milling enhanced PFAS extraction when incorporated into the co-solvation protocol. Overall, the co-solvation method provides a complementary approach for PFAS analysis in selected consumer products, although further optimization is needed to improve the recovery of challenging analytes and minimize matrix interferences in complex matrices.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189513","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}

引用次数: 0

Tree cover increases on agricultural land amid continued landscape-level deforestation: a case study from eastern Afghanistan 在持续的景观砍伐中，农业用地的树木覆盖面积增加：来自阿富汗东部的案例研究

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-16 DOI: 10.1007/s10661-026-16018-1

Farzaneh Razmju, Baoling Gui, Lydia Sam, Anshuman Bhardwaj, Mohammad Waris Haider, Safiullah Khurram, John W. Groninger, David F. R. P. Burslem

{"title":"Tree cover increases on agricultural land amid continued landscape-level deforestation: a case study from eastern Afghanistan","authors":"Farzaneh Razmju, Baoling Gui, Lydia Sam, Anshuman Bhardwaj, Mohammad Waris Haider, Safiullah Khurram, John W. Groninger, David F. R. P. Burslem","doi":"10.1007/s10661-026-16018-1","DOIUrl":"10.1007/s10661-026-16018-1","url":null,"abstract":"<div><p>Understanding changes in tree cover within agricultural landscapes is critical for assessing the resilience of rural communities and consequent land use dynamics in conflict-affected regions. This study examines spatiotemporal land use and tree cover changes across four districts of Nangarhar Province in eastern Afghanistan using high-resolution (3 m/pixel) satellite imagery. The temporal window examined for this study (2016–2024) spans a period of significant geopolitical upheaval in Afghanistan, including the collapse of the republican government in 2021 and the resulting shift in political power and governance dynamics. An object-based image analysis framework combined with a support vector machine classifier was applied to map five land use classes within settlement areas: tree cover, cropland, water, built-up areas, and barren land. Classification accuracy was assessed using stratified random sampling and Cohen’s kappa coefficient, with all maps achieving <i>κ</i> values above 0.80. Post-classification change detection and transition matrices were used to quantify class-to-class conversions in hectares, while Sankey diagrams were employed to visualise the magnitude and direction of land use transitions. The results reveal varying patterns of tree cover change across the study districts, with evidence of both tree cover gains linked to expansion of agroforestry and on-farm tree retention, and losses driven by agricultural expansion and development. These changes may influence local livelihoods, as trees on farms provide important resources such as fruit, fuelwood, and shade. The findings demonstrate the effectiveness of integrating high-resolution remote sensing, object-based classification, and Sankey-based visualisation for analysing complex land use dynamics.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10661-026-16018-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189511","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}

引用次数: 0

Occurrence, spatiotemporal distribution, and ecological risks of antibiotics in a river basin of eastern China 中国东部某河流流域抗生素的发生、时空分布及生态风险

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-16 DOI: 10.1007/s10661-026-16036-z

Xintong Lin, Jing Wang, Zhengzheng Liu, Jingqing Zhou, Qinqin Sun, Shuxin Chen, Huayu Hu

{"title":"Occurrence, spatiotemporal distribution, and ecological risks of antibiotics in a river basin of eastern China","authors":"Xintong Lin, Jing Wang, Zhengzheng Liu, Jingqing Zhou, Qinqin Sun, Shuxin Chen, Huayu Hu","doi":"10.1007/s10661-026-16036-z","DOIUrl":"10.1007/s10661-026-16036-z","url":null,"abstract":"<div><p>The widespread use of antibiotics has resulted in their frequent occurrence in aquatic environments, raising ecological concerns; however, conducting precise monitoring and tracing of a broad spectrum of antibiotics concurrently in complex river networks at the watershed scale still faces significant challenges. This study investigated the pollution characteristics of 32 target antibiotics in a major river basin in eastern China. A total of 184 river water samples collected across 2024–2025 were analyzed. Both detection frequencies (DFs, 0–82.86%) and concentrations (0–36,577 ng/L) of the antibiotics exhibited pronounced spatiotemporal and compound-specific variations. The risk quotient (RQ), calculated as the ratio of the detected concentration to the predicted no-effect concentration, ranged from 0 to 18.92. Sulfachloropyridazine (SCP), sulfamethoxazole (SMZ), and sulfathiazole (STZ) were identified as priority antibiotics for routine monitoring due to high DFs (≥ 50%) or high RQs (> 1 in some sampling points). In contrast, 14 antibiotics that were not detected in any samples and 10 others that exhibited consistently low DFs (< 20%) and low RQs (< 0.1) were assigned lower monitoring priority. Spatial analysis revealed two independent pollution hotspots dominated by SCP and by SMZ and florfenicol, likely sourced from livestock farming and urban sewage, respectively. The apparent attenuation coefficient of SCP, derived from the field monitoring data, revealed both seasonal and spatial variations, ranging from 0.28 to 2.24 km<sup>−1</sup>. These findings provide a high-resolution spatiotemporal dataset and identify key antibiotics for future monitoring and targeted management in similar river systems.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10661-026-16036-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189958","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}

引用次数: 0

Reproductive status monitoring of Coilia nasus across four Yangtze River sections during the fishing ban period 禁渔期长江四段胭脂虫繁殖状况监测

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-16 DOI: 10.1007/s10661-026-16060-z

Hongyi Guo, Xuguang Zhang, Wenqiao Tang, Kai Liu

{"title":"Reproductive status monitoring of Coilia nasus across four Yangtze River sections during the fishing ban period","authors":"Hongyi Guo, Xuguang Zhang, Wenqiao Tang, Kai Liu","doi":"10.1007/s10661-026-16060-z","DOIUrl":"10.1007/s10661-026-16060-z","url":null,"abstract":"<div><p>Catch-based indicators are widely used to monitor the Yangtze River fishing ban, but do not describe reproductive condition. We established a May–June 2024 reproductive status baseline for the globally Endangered Japanese grenadier anchovy <i>Coilia nasus</i> at four river sections. Drift gill nets with 40-mm mesh yielded 9455 fish, summarized in calendar 10-day intervals. Age and gonadosomatic index (GSI) were measured in a laboratory series of 1119 fish collected from 30 May to 4 June. Fish at macroscopic gonadal stages IV–V were classified as mature, with stage V analyzed separately. Anqing had the highest mean catch per event (129.5 fish) but the lowest mature proportion (8.9%). Chongming yielded fewer fish per event (95.3) but higher proportions of mature (54.2%) and stage-V fish (18.4%), and stage-V fish rose to 44.8% of the late June catch. Event-clustered models estimated approximately tenfold higher odds of maturity at Chongming than at Anqing; the contrast persisted during the 6-day common sampling window. At Anqing, the composition shifted seasonally from stage II toward stage III, but few reached stages IV–V, and Hukou was dominated by stage-III and stage-IV fish. Fish at both upstream sections were larger and in lower condition than those downstream, consistent with a contribution from long-distance migrants that mature later. Ages 2 and 3 accounted for 90.3% of the laboratory series, and GSI increased across macroscopic stages. Joint monitoring of catch rate and reproductive condition through the migration season provides a seasonal baseline for this Endangered species across estuarine, mainstream, and river–lake junction habitats.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189878","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}

引用次数: 0

Tracing the environmental lifecycle of nanoparticles: pathways, persistence, and ecotoxicological impacts 追踪纳米颗粒的环境生命周期：途径，持久性和生态毒理学影响

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-16 DOI: 10.1007/s10661-026-16059-6

Mustafa Mudhafar, Mustafa Akeel Al-hamdany, Zaman Hameed Kareem, Mustafa Al-saedi, Muhammad Abdulredha, Mundher Ali Seger

{"title":"Tracing the environmental lifecycle of nanoparticles: pathways, persistence, and ecotoxicological impacts","authors":"Mustafa Mudhafar, Mustafa Akeel Al-hamdany, Zaman Hameed Kareem, Mustafa Al-saedi, Muhammad Abdulredha, Mundher Ali Seger","doi":"10.1007/s10661-026-16059-6","DOIUrl":"10.1007/s10661-026-16059-6","url":null,"abstract":"<div><p>The rapid production and extensive use of nanoparticles (NPs) in biomedical, industrial, agricultural, and environmental technologies have led to increased release into natural ecosystems, heightening concerns about their environmental fate and ecological risks. Nanoparticles, owing to their nan and biological toxicity via three primary mechanismsoscale dimensions and distinctive physicochemical properties, exhibit intricate and dynamic behaviour in environmental systems, undergoing processes such as aggregation, dissolution, surface alteration, and interactions with biotic and abiotic components. These processes regulate nanoparticle transport, persistence, bioavailability, and toxicity, and are significantly affected by environmental variables. Notwithstanding considerable progress in nanotechnology and nanotoxicology, the current understanding of the ecological life-cycle behaviour of nanoparticles remains fragmented, and risk assessment frameworks often fail to account for their dynamic and context-dependent characteristics adequately. This review systematically integrates recent literature on the origins and release mechanisms of engineered, incidental, and naturally occurring nanoparticles; their movement through atmospheric, aquatic, and terrestrial environments; and the principal physicochemical and biological transformation processes that govern their environmental fate. The review assesses the ecological implications of nanoparticles across trophic levels and highlights significant knowledge gaps, methodological constraints, and research needs. This review seeks to enhance environmental risk assessment methodologies and facilitate the development of safer, more sustainable nanomaterials by adopting a life-cycle perspective.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189512","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}

引用次数: 0

Ecological assessment of green spaces: a systematic review of parameters and a proposed seven-category classification framework 绿地生态评价：参数的系统回顾和提出的七类分类框架

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-15 DOI: 10.1007/s10661-026-16019-0

Anusha Martin, Anjana Bhagyanathan, Chithra Kurukkanari, Deepak Dhayanithy

{"title":"Ecological assessment of green spaces: a systematic review of parameters and a proposed seven-category classification framework","authors":"Anusha Martin, Anjana Bhagyanathan, Chithra Kurukkanari, Deepak Dhayanithy","doi":"10.1007/s10661-026-16019-0","DOIUrl":"10.1007/s10661-026-16019-0","url":null,"abstract":"<div><p>Green spaces are ecologically significant landscapes that provide critical ecosystem services across diverse environmental and spatial contexts. Despite an expanding body of research, the parameters employed for ecological assessment of green spaces remain fragmented across disciplines with no unified framework for their classification. This study addresses this gap through a systematic literature review of studies indexed in Web of Science and Scopus databases, encompassing 113 publications in the fields of ecology and environmental science. The review systematically examines assessment contexts, spatial typologies, research domains, and ecological assessment parameters. Two primary assessment contexts are identified: urban green spaces and non-urban green spaces, representing fundamentally different spatial scales, management regimes, and ecological characteristics. Seven research themes are identified: spatio-temporal dynamics, ecosystem services, health and well-being, landscape characteristics, thermal environment, mapping and indexing, and ecological assessment. Parameters employed in different assessments are identified and those parameters which are applied in ecological assessment are organized into seven distinct categories: vegetation condition, landscape integrity, hydrological regulation, anthropogenic pressure, terrain-based factors, thermal and surface stress, and LULC dynamics. This seven-category framework provides a structured and replicable basis for assessing the ecological quality of green spaces across spatial scales and environmental settings, supporting conservation prioritization and evidence-based resource allocation.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189075","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}

引用次数: 0

Water quality forecasting with transient-aware modeling for non-stationary environmental time series 基于瞬态感知模型的非平稳环境时间序列水质预测

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-15 DOI: 10.1007/s10661-026-16033-2

Changjiang Yuan, Shaopeng Guan, Ying Zhou

{"title":"Water quality forecasting with transient-aware modeling for non-stationary environmental time series","authors":"Changjiang Yuan, Shaopeng Guan, Ying Zhou","doi":"10.1007/s10661-026-16033-2","DOIUrl":"10.1007/s10661-026-16033-2","url":null,"abstract":"<div><p>Water quality is jointly shaped by environmental and anthropogenic factors, and the resulting monitoring data often exhibit non-stationary characteristics with transient and abrupt signals. Conventional forecasting models have difficulty accommodating these distributional shifts: they often produce delayed predictions or lose accuracy near abrupt-change points. This study proposes a state-space forecasting framework for complex aquatic dynamics, in which parallel temporal and spectral branches learn complementary time-domain and frequency-domain representations. The spectral-attention Mamba architecture integrates long-range temporal dependencies with frequency- and phase-domain interactions in a joint latent space. To reduce the feature smoothing typical of conventional reconstructions, we further introduce a Laplace-domain transient decoder, which maps latent features to stable complex poles and constructs a damped-oscillation basis for transient forecasting. This formulation is motivated by the damped and oscillatory patterns observed in water-quality records. Experiments on three heterogeneous monitoring datasets demonstrate competitive forecasting performance, with the largest improvements observed for irregular multiscale dynamics and long-horizon forecasting, whereas the gains are more limited for strongly periodic sequences. The event-based analysis further indicates lower mean temporal-lag errors for selected variables under non-stationary conditions.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189832","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}

引用次数: 0

Occurrence and concentration variability of pharmaceuticals, pesticides, and polyphenols in Nyabugogo River, Rwanda 卢旺达尼亚布戈戈河中药品、农药和多酚的发生和浓度变动性

IF 3.6 4区环境科学与生态学

Environmental Monitoring and Assessment Pub Date : 2026-10-15 DOI: 10.1007/s10661-026-16028-z

Brigitte Mukarunyana, Elias Nyandwi, Telesphore Kabera, Christoffer Boman, Jerker Fick

{"title":"Occurrence and concentration variability of pharmaceuticals, pesticides, and polyphenols in Nyabugogo River, Rwanda","authors":"Brigitte Mukarunyana, Elias Nyandwi, Telesphore Kabera, Christoffer Boman, Jerker Fick","doi":"10.1007/s10661-026-16028-z","DOIUrl":"10.1007/s10661-026-16028-z","url":null,"abstract":"<div><p>Pharmaceuticals, pesticides, and polyphenols are increasingly detected in aquatic environments, impacting water quality and aquatic life. This study screened these contaminants in Rwanda’s Nyabugogo River, analysing 45 water samples from rural, peri-urban, and urban areas using solid-phase extraction and LC–MS/MS. Fifty-seven pharmaceuticals, five pesticides, and four polyphenols were quantified, with the highest average concentrations of albendazole (960 ng/L), metalaxyl (70 ng/L), and caffeic acid (49 ng/L). Pharmaceutical levels were significantly higher in urban areas, reflecting inadequate sanitation and wastewater management in Kigali, while pesticide and polyphenol concentrations varied across different types of land use, influenced by agricultural and urban discharges. Temporal sampling revealed significant within-day concentration fluctuations but consistent day-to-day levels, indicating persistent contamination sources. These findings provide essential baseline data for monitoring organic pollutants and informing strategies to mitigate contamination in urban river systems.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"198 11","pages":""},"PeriodicalIF":3.6,"publicationDate":"2026-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10661-026-16028-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149189926","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}

引用次数: 0