环境科学与生态学最新文献

{"title":"Wolf hair for biomonitoring arsenic, selenium, cadmium and lead exposure: a comparative study with internal organs.","authors":"Aitor González-Martín, David Fernández-Casado, Elsa Rodríguez-Somoza, Salomé Martínez-Morcillo, Ángel Portillo-Moreno, María Prado Míguez-Santiyán, Luis Eusebio Fidalgo, Ana López-Beceiro, Francisco Soler, Marcos Pérez-López","doi":"10.1016/j.envpol.2026.129237","DOIUrl":"10.1016/j.envpol.2026.129237","url":null,"abstract":"<p><p>Potentially toxic elements (PTEs) are persistent environmental contaminants with important implications for wildlife health. This study assessed hair as a non-invasive biomonitoring matrix in the Iberian wolf (Canis lupus signatus) by comparing arsenic (As), selenium (Se), cadmium (Cd), and lead (Pb) concentrations in hair, liver, and kidney, and evaluating age-related accumulation patterns. A total of 77 wolves from Northwestern Spain were analysed using inductively coupled plasma mass spectrometry (ICP-MS). Selenium showed the highest concentrations, particularly in kidney and liver, while lower levels in hair reflected preferential accumulation in metabolically active tissues. Arsenic concentrations exceeded background thresholds in liver and kidney and were markedly higher in hair, consistent with excretory processes. Cadmium accumulated mainly in the kidney, indicating chronic low-level exposure, whereas lead concentrations were higher in hair than in liver or kidney, suggesting that hair may serve as a useful non-invasive indicator of Pb exposure in wolves. Age-related patterns varied among elements. Cadmium increased significantly with age in hair, but only when comparing youngest and oldest animals (p < 0.01), consistent with its long biological half-life. In contrast, As was higher in pups when compared to adults (p < 0.05), which could reflect combined effects of developmental physiology and maternal exposure pathways. Selenium showed age-related differences only in liver, while lead exhibited no significant variation. Strong positive correlations were observed between liver and kidney concentrations of As, Cd, and Pb (p < 0.001), whereas relationships between hair and internal organs were weak or absent, indicating that hair provides limited information on internal metal burdens in Iberian wolves. Therefore, further studies are required to evaluate the utility of hair as a complementary biomonitoring matrix suitable for large-scale environmental surveillance and exposure assessment.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129237"},"PeriodicalIF":7.2,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149035952","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":"From emission-dominated mitigation to meteorology-modulated secondary pollution: Decadal insights from Beijing's short-term interventions.","authors":"Yunping Kan, Nan Wang, Wei Zhou, Xiaomin Cheng, Xinyuan Cao, Yan Li, Weiqi Xu, Siqi Zeng, Zijun Zhang, Liu Yang, Zifa Wang, Yele Sun","doi":"10.1016/j.envpol.2026.129240","DOIUrl":"10.1016/j.envpol.2026.129240","url":null,"abstract":"<p><p>Short-term emission controls during major events provide quasi-experimental opportunities to evaluate urban air pollution responses to anthropogenic interventions. However, their effectiveness under declining emission baselines requires reevaluation. Here, we investigated aerosol chemical composition and volatile organic compounds (VOCs) during the 2025 Beijing Victory Day Parade, comparing findings directly with the 2015 Parade. Despite effective traffic emission reductions in 2025, a decrease of 41.6% in NO₂ and 14.8% in aromatic VOCs, Fine particulate matter (PM_2.5) unexpectedly increased by 20.9%. This contrasted sharply with 2015, when comparable controls reduced PM_2.5 from 55.7 to 27.0 μg m^-3. Machine learning attribution showed that nearly 90% of the PM_2.5 reduction in 2015 was driven by anthropogenic emission controls, whereas increases in PM_2.5, particularly sulfate and secondary organic aerosol (SOA) in 2025 were primarily associated with adverse meteorological conditions. Elevated temperature and humidity enhanced secondary formation, thereby offsetting the benefits of primary emission controls. VOCs analysis further showed that, despite the reduction in anthropogenic aromatics, biogenic and oxygenated VOCs, and temperature-sensitive emissions including volatile chemical products (VCPs)increased substantially during the 2025 control period. These changes shifted SOA formation from the photochemical aging of anthropogenic precursors in 2015 toward the aqueous-phase and heterogeneous processing of biogenic and other temperature-sensitive precursors in 2025. Our results reveal a decadal transition in Beijing's short-term PM_2.5 response from emission-dominated PM_2.5 mitigation to meteorology-modulated secondary aerosol formation under a lower-emission regime. Future event-based air-quality management should integrate conventional emission reductions with meteorology-informed VOC controls targeting temperature-sensitive sources and secondary aerosol formation.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":"410 ","pages":"129240"},"PeriodicalIF":7.2,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149056860","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":"Copper-nickel interaction effects on bioaccumulation and physiological responses of the acid-tolerant microalga Trebouxiophyceae sp. MA-1.","authors":"Menglei Ye, Dandan Zhang, Huangyukun Yang, Peihuan Li, Jiale Chen, Qingnan Yu, Qin Gao, Chunhua Zhang, Ying Ge, Jun Chen, Weijuan Xu","doi":"10.1016/j.envpol.2026.129143","DOIUrl":"10.1016/j.envpol.2026.129143","url":null,"abstract":"<p><p>Copper (Cu) and nickel (Ni) coexist widely in industrial and municipal wastewater, especially acid mine drainage (AMD). However, research concerning the toxic effects and ecological risks of combined Cu/Ni stress on microalgae is scant, and a systematic comparison of microalgal responses between single and co-exposure conditions has yet to be systematically conducted. An indigenous acid-tolerant AMD microalga, Trebouxiophyceae sp. MA-1, was isolated and examined for its Cu and Ni tolerance and removal in this study. The algal growth was inhibited more severely by Cu than Ni. Co-exposure caused significant growth inhibition of the microalga. Intracellular uptake dominated Cu bioaccumulation in MA-1, yet 20 mg/L Ni drastically raised surface-adsorbed Cu fractions from 1.1 % to 35.5 % (0.8 mg/L Cu) and 13.1 % to 52.7 % (1.5 mg/L Cu). Functional groups associated with extracellular proteins and polysaccharides provided abundant binding sites, and protein-like substances in extracellular polymeric substances (EPS) were actively involved in Cu complexation. Ni promoted Cu bioaccumulation and aggravated oxidative stress; MDA levels reached 2.45- and 2.41-fold of the control under 1.5 mg/L Cu combined with 2 and 20 mg/L Ni, respectively. To mitigate this stress, MA-1 upregulated the activities of superoxide dismutase (SOD) and catalase (CAT) for reactive oxygen species (ROS) scavenging, and simultaneously enhanced the activities of enzymes related to the nitrogen metabolism pathway to assist in detoxification processes. Taken together, this study systematically elucidated the Cu/Ni bioaccumulation characteristics and detoxification responses of the acid-tolerant microalga MA-1, and highlighted the importance of accounting for interactions of multiple metals when assessing the ecological risks of heavy metal combined pollution.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129143"},"PeriodicalIF":7.2,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148928545","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":"How did chlorine-resistant bacteria (CRB) grow on reverse osmosis membranes and cause fouling?","authors":"Yuan Bai, Yinhu Wu, Liwei Luo, Zhuowei Zhang, Ruining Wang, Haobin Wang, Zhuo Chen, Hongying Hu","doi":"10.1016/j.envpol.2026.129054","DOIUrl":"10.1016/j.envpol.2026.129054","url":null,"abstract":"<p><p>Understanding the adhesion, growth, and biofilm development of chlorine-resistant bacteria (CRB) on reverse osmosis (RO) membranes is important for elucidating the microscopic mechanisms of biofouling. This study employed a typical CRB strain to systematically investigate its growth and fouling behavior on RO membranes. Temporal variations in CRB distribution and morphology, together with quantitative permeate flux decline, were analyzed to establish direct links between microstructural evolution and fouling performance deterioration. Three distinct developmental stages were demonstrated: (I) an initial aggregation stage (0-6 h), wherein CRB cell density increased slightly yet fouling layer resistance (R_f) rose substantially due to aggregate formation; (II) a cell proliferation stage (6-24 h), characterized by concurrent increases in cell density and R_f as CRB rapidly expanded and occupied the membrane surface; and (III) a matrix compaction stage (24-48 h), during which intensive EPS secretion filled intercellular voids, densified the biofilm matrix, and drove a further increase in R_f. This study elucidates the temporal shifts in fouling mechanisms, from aggregate-dominated resistance, to cell proliferation-driven surface coverage, and finally to EPS-induced matrix compaction, thereby providing mechanistic insight into the microprocesses governing CRB fouling on RO membrane.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129054"},"PeriodicalIF":7.2,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849503","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":"Multiple scale numerical simulation for development and role of biofilms on contaminant plume distribution in saturated porous media","authors":"Zhichao Cai,Changhong Zheng,Wenbo Li,Yuhan La,Songyan Zhang,Yuesuo Yang","doi":"10.1016/j.advwatres.2026.105553","DOIUrl":"https://doi.org/10.1016/j.advwatres.2026.105553","url":null,"abstract":"<div><p>With the widespread applications of bioremediation in environmental pollution control, biofilms served as primary sites for contaminant removal for contaminated lands but altered pore scale uniformity and intrinsic pore structure of porous media in the meanwhile. Traditional continuum models often overlooked pore blockage and spatial heterogeneity of the biodegradation rates. These simplifications and limitations led to discrepancies between simulations and the actual spatiotemporal observation of the porous media and the microbially mediated contaminant plumes. To address such challenges, an LBM-IBM-CAM framework for pore scale numerical simulations was developed. The modeling approach was employed to determine changes of the medium permeability and dispersivity under different contaminant concentrations, to analyze the bio-mechanisms underlying these variations and evaluate the capability of the pore scale model in capturing the system responses to parameter changes. A multiscale modeling was carried out using domain decomposition for a 2D scenario, in which the pore scale simulation was sequentially coupled into the macroscopic continuum scale model for a second-stage simulation to quantify the spatiotemporal plume behavior in the zones influenced by biofilm growth. Results showed that biofilm growth reduced permeability by up to two orders of magnitude and dispersivity increased from the initial value. These physical changes were manifested as a delayed plume breakthrough at the macroscopic continuum scale and, in combination with bio-degradation, collectively influenced contaminant removal. This study is expected to provide a process-based modeling support for the refined characterization of the flow dynamics in porous media and contaminant plumes, and hence successful site remediation.</p></div>","PeriodicalId":7614,"journal":{"name":"Advances in Water Resources","volume":"25 1","pages":"105553"},"PeriodicalIF":4.7,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149368136","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":"Metals and metalloids signatures in early pregnancy suggest cadmium and arsenic as major mixture components associated with gestational diabetes mellitus risk.","authors":"Jingxia Wei, Zhanyue Zheng, Yingjie Zhou, Shuchang Liu, Yu Feng, Tianao Sun, Yongjie Ma, Minglian Pan, Xinyu Yuan, Jinhao Wan, Yan Sun","doi":"10.1016/j.envpol.2026.129238","DOIUrl":"10.1016/j.envpol.2026.129238","url":null,"abstract":"<p><p>Pregnancy is a vulnerable window for environmental pollutant exposure, yet the contribution of metals and metalloids (metal(loid)s) to gestational diabetes mellitus (GDM) remains insufficiently characterized. This prospective cohort study evaluated whether early-pregnancy urinary metal(loid)s were associated with subsequent GDM and explored their predictive and mechanistic value. Among 1201 pregnant women included in Guilin, China, nine urinary metal(loid)s were measured by inductively coupled plasma mass spectrometry. GDM was diagnosed by a 75-g oral glucose tolerance test at 24-28 gestational weeks. Restricted cubic spline and weighted quantile sum regression assessed dose-response and mixture effects. Machine learning models evaluated early prediction, and network toxicology explored molecular pathways. GDM occurred in 312 participants. Cadmium, arsenic, manganese, thallium, and lead showed nonlinear associations with GDM risk. Cadmium and arsenic dominated the overall mixture effect. Adding urinary metal(loid)s to conventional biochemical indicators modestly improved discrimination, with the XGBoost performing best. Network toxicology identified shared cadmium/arsenic targets enriched in oxidative stress, inflammation, apoptosis, endothelial dysfunction, and insulin-resistance pathways, including AGE-RAGE, HIF-1, TNF, and IL-17 signaling. These findings suggest that early-pregnancy metal(loid)s mixture exposure, particularly cadmium and arsenic, is associated with GDM risk, with arsenic the most consistent contributor across mixture methods and non-linear signals for lead and manganese warranting further investigation. Urinary metal(loid)s may serve as complementary biomarkers for early GDM risk stratification.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129238"},"PeriodicalIF":7.2,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149056692","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":"Core gut symbionts enhance honeybee (Apis mellifera) resilience to flumethrin stress by upregulating host immunity.","authors":"Jianhui Liu, Jing Chen, Xiaobo Wu","doi":"10.1016/j.envpol.2026.129215","DOIUrl":"10.1016/j.envpol.2026.129215","url":null,"abstract":"<p><p>The widespread use of flumethrin has significantly jeopardized the survival of bees. However, the mechanisms by which bees and their intestinal microorganisms resist flumethrin remain to be elucidated. Therefore, this study aimed to explore the mechanism by which the gut microbiota of bees assist the bee host in resiling flumethrin stress. Bees were exposed to various concentrations of flumethrin (0.01, 0.1, and 1 mg/L) for 14 days, subsequently, performance parameters (body weight, gut weight, and food intake) and gut microbiota diversity and composition were assessed. Then, the performance parameters and mRNA expression of bees colonized by core gut bacteria (Bombilactobacillus mellis, Lactobacillus apis, Snodgrassella alvi, Bartonella apis, and Gilliamella apicola) and exposed to 1 mg/L flumethrin were evaluated. Chronic flumethrin exposure significantly reduced survival rate and gut weight, damaged intestinal structure, and induced gut microbiota dysbiosis in bees. However, gut colonization by B. mellis, S. alvi, and G. apicola significantly improved survival rate, body weight, and intestinal weight in bees. Importantly, G. apicola colonization significantly enhanced honeybees resilience to flumethrin, as evidenced by a significant increase in survival rate from 65.8 to 94.1% after G. apicola colonization. Moreover, bacterial gut colonization significantly upregulated the mRNA expression of immune detoxification genes, including superoxide dismutase, catalase, Toll, defensin-1, and abaecin, in bees. Collectively, these findings indicate that gut bacteria confer protection against flumethrin-induced stress by enhancing host immunity, underscoring the critical role of the gut microbiota in mediating honeybee resilience to environmental pollutants.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129215"},"PeriodicalIF":7.2,"publicationDate":"2026-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149035969","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":"Assessment of airborne ¹⁴CO₂ pollution from a nuclear power plant with RBMK-type reactors by transfer-factor modelling and tree-ring measurements.","authors":"Evaldas Maceika, Laurynas Juodis, Žilvinas Ežerinskis, Justina Šapolaitė, Algirdas Pabedinskas, Rūta Barisevičiūtė","doi":"10.1016/j.envpol.2026.128894","DOIUrl":"10.1016/j.envpol.2026.128894","url":null,"abstract":"<p><p>The article provides results of the study on retrospective evaluation of ¹⁴C pollution from Ignalina Nuclear Power Plant (INPP). Transfer factor approach was applied coupled with the radiocarbon measurements in Scots pine tree rings of extended network of 9 sampling sites around the INPP within the distance of 1.8 - 6.6 km from the INPP ventilation stacks. The measured ¹⁴C activity in tree rings suggested the annual airborne release estimate from the INPP to be in the range 0.43 - 11 TBq depending on the lifetime period of INPP which is in good agreement with other studies. The estimated average annual emission factor ranged from about 1 TBq/GWa in early operational years up to about 3 TBq/GWa after 10 years of operation. The most probable reason for this increase is the accumulation and aging of the graphite stack of INPP RBMK reactors. The last operational decade (1999 - 2009) is characterised by large fluctuations of releases which may be caused by the maintenance and waste management activities at INPP. The trend of last decade of our observations (2009 - 2019) is a continuous decrease of emissions up to 0.5 TBq per year after final shutdown of the reactors in 2009. The study shows high potential of accumulated ¹⁴C activity release due to dismantling and decontamination activities during the decommissioning phase of the NPP. The extended sampling site network effectively functioned as an aerial averaging system, reducing the influence of local peculiarities on sampling and modelling. As a result, the overall radiocarbon emissions reconstruction model uncertainty was estimated at approximately of 24%.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"128894"},"PeriodicalIF":7.2,"publicationDate":"2026-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148676321","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":"Decoupling effect of fulvic acid on Fe(II)-mediated transformation of Cr(VI)-loaded lepidocrocite: Enhanced Cr immobilization independent of mineral transformation.","authors":"Cong Fan, Wenwu Pan, Limiao Cai, Yan Yang, Qian Yao, Xiaohu Jin, Xiaofei Li, Chuling Guo, Fenglan Lu, Bing Zhang, Zhi Dang","doi":"10.1016/j.envpol.2026.129050","DOIUrl":"10.1016/j.envpol.2026.129050","url":null,"abstract":"<p><p>Hexavalent chromium (Cr(VI)) immobilization on iron oxides is commonly considered to rely on Fe(II)-mediated mineral transformation. Fulvic acid (FA) is ubiquitous in natural environments and interferes with interfacial reactions, yet its regulatory linkage between mineral evolution and Cr immobilization remains poorly understood. This study explored Fe(II)-mediated transformation of Cr(VI)-loaded lepidocrocite (LepCr) under anoxic conditions using batch experiments, spectroscopic characterization, and sequential extraction. Results confirmed that Cr(VI) was completely reduced to Cr(III) with no secondary release in all Fe(II)-amended systems. FA displayed a concentration-dependent effect on mineral conversion, which was partially decoupled from Cr immobilization. Lw FA (12 mg/L) facilitated lepidocrocite-to-goethite conversion via molecular bridging, whereas high FA (86 mg/L) significantly inhibited mineral recrystallization. Notably, as FA concentrations increased from 12 to 86 mg/L, the dominant Cr immobilization pathway shifted from mineral-transformation-associated processes to interfacial FA-Cr(III) complexation. Despite suppressed mineral transformation, high FA greatly elevated the proportion of non-extractable Cr from 25% to 54%, strengthening Cr immobilization. These results demonstrated that efficient Cr immobilization could be attained with reduced dependence on mineral transformation, where FA-Cr(III) complexation and Cr(III)-Fe(III) interfacial passivation dominated. Synchronous redistribution of FA at the solid-liquid interface further reinforced Cr sequestration. This work clarified the decoupled mechanism between mineral transformation and Cr immobilization, providing a mechanistic basis for optimizing Cr immobilization strategies in organic-rich contaminated environments.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"129050"},"PeriodicalIF":7.2,"publicationDate":"2026-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148872527","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":"Baseline temperature amplifies warming-induced shifts in sediment metal(loid) lability across element-specific response regimes.","authors":"Yang-Guang Gu, Yanpeng Gao, Hong-Hui Huang, Richard W Jordan, Shi-Jun Jiang","doi":"10.1016/j.envpol.2026.128923","DOIUrl":"10.1016/j.envpol.2026.128923","url":null,"abstract":"<p><p>Climate warming is expected to reshape sediment-associated metal behavior, yet whether warming responses of sediment metal(loid) lability are systematically regulated by baseline thermal conditions remains unresolved. Here, we combined diffusive gradients in thin films (DGT) measurements with controlled sediment incubations across 0-40 °C to quantify temperature-dependent lability responses of multiple metal(loid)s in coastal sediments. Distinct element-specific response regimes emerged. Redox-sensitive elements (Mn, V, and As) exhibited nonlinear increases in DGT-labile concentrations with warming, cobalt showed transitional non-monotonic behavior, whereas most particle-associated metal(loid)s displayed monotonic declines. These contrasting responses indicate that warming does not uniformly enhance sediment metal(loid) lability but reorganizes reactive metal behavior in patterns consistent with element-specific differences in solid-phase resupply and retention. Despite divergent element-specific trends, identical warming perturbations consistently induced larger relative lability changes at lower baseline temperatures. Model-based sensitivity analysis further showed that proportional warming responses were amplified under cold baseline conditions, identifying baseline temperature as a first-order regulator of sediment metal(loid) responsiveness to warming. This baseline-temperature control implies that climate warming may redistribute sediment contaminant sensitivity across thermal regimes, with cold coastal sediments exhibiting disproportionate geochemical responses. Our results provide a process-based framework linking warming, element-specific resupply kinetics, and sediment metal(loid) lability, and highlight baseline temperature as a critical but previously underrecognized control on contaminant dynamics at the sediment-water interface.</p>","PeriodicalId":311,"journal":{"name":"Environmental Pollution","volume":" ","pages":"128923"},"PeriodicalIF":7.2,"publicationDate":"2026-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148688242","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}