Environmental Research最新文献

{"title":"Measurement error correction methods for the effects of ambient air pollution on mortality and morbidity using the UK Biobank cohort: the MELONS study","authors":"Dimitris Evangelopoulos ,&nbsp;Dylan Wood ,&nbsp;Barbara K. Butland ,&nbsp;Benjamin Barratt ,&nbsp;Hanbin Zhang ,&nbsp;Konstantina Dimakopoulou ,&nbsp;Evangelia Samoli ,&nbsp;Sean Beevers ,&nbsp;Heather Walton ,&nbsp;Joel Schwartz ,&nbsp;Evangelos Evangelou ,&nbsp;Klea Katsouyanni","doi":"10.1016/j.envres.2025.122237","DOIUrl":"10.1016/j.envres.2025.122237","url":null,"abstract":"<div><div>Epidemiological cohort studies associating long-term exposure to ambient air pollution with health outcomes most often do not account for individually assigned exposure measurement error. Here, we implemented Cox proportional hazards models to explore the relationships between NO₂, PM_2.5 and ozone exposures with the incidence of natural-cause mortality and several morbidity outcomes in 61,797 London-dwelling respondents of the UK Biobank cohort. Data from an existing personal monitoring campaign was used as an external validation dataset to estimate measurement error structures between “true” personal exposure and several surrogate (measured and modelled) estimates of assigned exposure, allowing for the application of two health effect estimate correction methodologies: regression calibration (RCAL) and simulation extrapolation (SIMEX). Uncorrected hazard ratios (HRs) suggested an increase in the risk of natural-cause mortality for modelled NO₂ estimates (HR: 1.028 [0.983, 1.074] per IQR increment of 14.54 μg/m³) and no statistically significant association was observed for PM_2.5 surrogate exposure measures. Measurement error corrected HRs were generally larger in magnitude, although exhibited wider confidence intervals than uncorrected effect estimates. Chronic obstructive pulmonary disease (COPD) was associated with increased exposure to modelled NO₂ (1.087 [1.022, 1.155]). Both RCAL and SIMEX correction resulted in increased HRs (1.254 [1.061, 1.482] and 1.192 [1.093, 1.301], respectively). SIMEX correction of modelled PM_2.5 (IQR: 1.72 μg/m³) associations with COPD increased the HR (1.079 [1.001, 1.164]) in comparison to uncorrected (1.042 [0.988, 1.099]). These findings suggest that health effect estimates not corrected for exposure measurement error may lead to underestimation in the magnitude of effects.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122237"},"PeriodicalIF":7.7,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523328","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":"Regulating CO2 adsorption performance of lychee seed-based porous carbon materials: Insights into oxygen groups and pore structure","authors":"Jiadi Gao,&nbsp;Hao Wang,&nbsp;Xianyi Liu,&nbsp;Zhiguo Zhang,&nbsp;Zhigeng Fan,&nbsp;Yange Suo","doi":"10.1016/j.envres.2025.122245","DOIUrl":"10.1016/j.envres.2025.122245","url":null,"abstract":"<div><div>Herein, porous carbon materials rich in oxygen (O)-containing functional groups and with abundant micropores were synthesized by carbonizing lychee seeds activated with various activators at a relatively low temperature of 600 °C. The incorporation of potassium and sodium salts during activation effectively modulated both the surface O functionalities and the microporous structure of the resulting porous carbon materials. The influence of these characteristics on CO₂ adsorption performance was systematically investigated. A multiple linear regression model was developed to evaluate the impact of key factors including cumulative pore volumes in the pore size range of 5–7 Å (V_5–7 Å), 0–10 Å (V_0–10 Å), and 0–20 Å (V_0–20 Å), total pore volume (V_T), and the contents of C=OOH and C–OH groups on the CO₂ adsorption capacity of the carbon materials at 1 bar and 25 °C. Results revealed that the C=OOH content is the most significant factor affecting CO₂ uptake, while C–OH content and V_0–20 Å also play important secondary roles. Notably, the LS-KOH-600 sample exhibited a high CO₂ adsorption capacity, reaching 5 mmol/g at 25 °C and 7.15 mmol/g at 0 °C (1 bar). Furthermore, LS-KOH-600 demonstrated excellent CO₂/N₂ selectivity (29.9) and good cyclic stability under simulated flue gas conditions.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122245"},"PeriodicalIF":7.7,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523331","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":"Insect-Derived Chitosan for Phosphate Recovery and Application as a Sustainable Fertilizer.","authors":"Priya E, Akash Jha, Jatin C Paghadal, Sudipta Sarkar","doi":"10.1016/j.envres.2025.122252","DOIUrl":"https://doi.org/10.1016/j.envres.2025.122252","url":null,"abstract":"<p><p>It is necessary to remove excessive phosphate in treated wastewater before its discharge into inland waters, as phosphate is known to cause eutrophication. Phosphate, being an important nutrient in agriculture, the reuse of recovered phosphate as fertilizer is highly desirable. This article discusses the development of a phosphate-selective biodegradable adsorbent using black soldier fly (BSF) exuviae, which serve as a source of chitosan. The adsorbent, comprised of chitosan and carboxy methyl cellulose (CMC) dispersed with hydrated ferric oxide (HFO) nanoparticles, proved effective in phosphate adsorption through inner sphere complex formation between HFO surface and phosphate ions. The adsorbent showed a capacity of 2 mg /g, and followed Freundlich adsorption model and pseudo-second order kinetics. The adsorbent, named as FeCC, could absorb water about 35 times of its own dry weight. It got 85% biodegraded within 90 days when placed in soil. The near-complete release of adsorbed phosphate (>97%) was observed within 10 days in aqueous solutions having pH 5, 7, and 9. These findings indicated that the release of nutrients occurs gradually over a period of time. A plant growth study indicated that the phosphate-rich hydrogel adsorbent beads with phosphate content as small as 5% of the phosphorus (as P) contained in single super phosphate were sufficient to promote growth similar to the conventional fertilizer. The chitosan of the FeCC matrix also provided nitrogen, which is necessary for plant growth. Thus, gradual and simultaneous release of phosphate and nitrogen from FeCC provided essential nutrients to plants to grow more efficiently than those treated with conventional fertilizer. The study demonstrates the circular economy principle, in which waste materials were recycled to tackle a waste-related problem, with treatment residue reused in agricultural field to be assimilated back into the ecosystem, also providing a win-win solution for environmental issues, food security, and sustainability.</p>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":" ","pages":"122252"},"PeriodicalIF":7.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144525784","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":"Fe3O4-mediated regulation of aerobic granular sludge under high salinity and fluctuating C/N ratio: Mechanisms and implications for seafood processing wastewater treatment","authors":"Yingyun Chen ,&nbsp;Yanwei Liu ,&nbsp;Yadong Zhao ,&nbsp;Nanfei Geng ,&nbsp;Jan Baeyens ,&nbsp;Shaojie Wang ,&nbsp;Haijia Su","doi":"10.1016/j.envres.2025.122257","DOIUrl":"10.1016/j.envres.2025.122257","url":null,"abstract":"<div><div>To address the poor performance of aerobic granular sludge (AGS) in the treatment of seafood processing wastewater with high salinity and fluctuating C/N ratio, this study explored an exogenous Fe₃O₄ dosing strategy to stimulate the stress response. The results showed that 1.5 g/L Fe₃O₄ stimulated the secretion of more hydrophobic aromatic proteins and viscous polysaccharides in AGS at a salinity of 35 gNaCl/L and the C/N ratio increased from 10 to 20 and then decreased to 10 and 5, effectively inhibiting the shedding of bacterial consortia from granules. The improved electron transport efficiency guaranteed a high metabolic rate for microorganisms. Meanwhile, the enrichment of <em>Glutamicibacter</em> and <em>Ferruginibacter</em> played an important role in response to high salt and fluctuating C/N stresses. Fe₃O₄ was found to upregulate the expression of functional genes associated with nitrogen conversion. This study provided new insights to improve the robustness of AGS in seafood processing wastewater treatment.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122257"},"PeriodicalIF":7.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144525782","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":"Sustainable repurposing of CNT decorated oxygen-deficient perovskite LaNi0.5Co0.5O3-γ for antimony removal and reuse of the spent adsorbent in high-performance supercapacitor devices","authors":"Mohd Shoeb ,&nbsp;Fouzia Mashkoor ,&nbsp;Norah Alhokbany ,&nbsp;Changyoon Jeong","doi":"10.1016/j.envres.2025.122246","DOIUrl":"10.1016/j.envres.2025.122246","url":null,"abstract":"<div><div>This study presents the development of a multifunctional perovskite-based nanocomposite designed to address environmental remediation and material reuse. A novel hybrid material, LaNi_0.5Co_0.5O_3-γ/carbon nanotube (LNC/CNT), was synthesized and evaluated for its dual functionality: the removal of Sb(III) from aqueous solutions and its subsequent repurposing for energy storage applications. The LNC/CNT nanocomposite demonstrated outstanding adsorption performance, achieving a removal efficiency of 92.51 %. The adsorption process followed a pseudo-second-order kinetic model (R² = 0.996) and was well described by the Langmuir isotherm, yielding a maximum adsorption capacity of 414.99 mg/g. Following Sb(III) adsorption, the spent material was thermally treated and transformed into LNC/CNT–SbO_x, exhibiting promising potential for electrochemical reuse. In a symmetric supercapacitor configuration, the repurposed material delivered a high energy density of 70.33 Wh/kg at a power density of 1000 W/kg while maintaining 89 % of its initial capacitance after 13,000 charge-discharge cycles, indicating excellent long-term cycling stability. This work highlights a circular materials strategy that converts exhausted adsorbents into value-added functional materials, offering a sustainable and eco-friendly approach to pollutant removal and energy storage.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122246"},"PeriodicalIF":7.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523327","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":"Urinary parabens, advanced glycation end products and blood pressure in children: a longitudinal cohort study","authors":"Brigitte Reimann ,&nbsp;Hanne Sleurs ,&nbsp;Rossella Alfano ,&nbsp;Eleni Renaers ,&nbsp;Hanne Croons ,&nbsp;Thessa van Pee ,&nbsp;Lore Verheyen ,&nbsp;Nick Giesberts ,&nbsp;Anna E. Soerensen ,&nbsp;Catherine Pirard ,&nbsp;Corinne Charlier ,&nbsp;Tim S. Nawrot ,&nbsp;Michelle Plusquin","doi":"10.1016/j.envres.2025.122229","DOIUrl":"10.1016/j.envres.2025.122229","url":null,"abstract":"<div><h3>Background</h3><div>Paraben exposure and advanced glycation end products (AGEs) have both been linked to cardiovascular conditions, including hypertension. However, the association between parabens and AGEs has not been studied yet. Parabens could affect blood pressure (BP) via AGEs.</div></div><div><h3>Methods</h3><div>In this longitudinal study, urinary paraben concentrations [methyl (MeP), ethyl (EtP), propyl (PrP), butyl (BuP)] were measured in preschool children from the ENVIR<em>ON</em>AGE birth cohort using ultra-performance liquid chromatography/tandem mass spectrometry. BP and AGEs, assessed with skin-autofluorescence (SAF) z-scores, were measured at baseline (4 years) and six years later in 83 children (166 observations). First, generalized linear mixed models and quantile g-computation were applied to assess associations and mixture effects of parabens with AGEs and with BP. Next, structural equation modeling (SEM) was employed to disentangle time-specific effects in these associations and explore the role of AGEs as mediators in the relationship between parabens and BP.</div></div><div><h3>Results</h3><div>We observed an inverse association between the paraben mixture and AGEs (β = −0.30 per quantile increase; 95 % CI: −0.55, −0.042), driven by PrP with the strongest negative weight. Single-pollutant models confirmed this association for PrP (β = −0.15; 95 % CI: −2.51, −0.049). SEM revealed direct effects of parabens on systolic blood pressure at 4 years (est.std. = 0.50; 95 % Boot CI: 0.10, 0.82). AGEs mediated an inverse indirect effect of parabens on DBP at 10 years (β = −0.21; 95 % Boot CI: −0.41, −0.05).</div></div><div><h3>Conclusions</h3><div>Early-life paraben exposure, particularly PrP, is associated with AGEs and blood pressure, warranting further investigation into long-term consequences.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122229"},"PeriodicalIF":7.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144525786","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":"Surrounding residential greenness and mental health: Findings from the French CONSTANCES cohort","authors":"Zeinab Bitar ,&nbsp;Mohammad Javad Zare Sakhvidi ,&nbsp;Emeline Lequy ,&nbsp;Antoine Lafontaine ,&nbsp;Cédric Lemogne ,&nbsp;Kees de Hoogh ,&nbsp;Marcel Goldberg ,&nbsp;Franck Schürhoff ,&nbsp;Danielle Vienneau ,&nbsp;Marie Zins ,&nbsp;Baptiste Pignon ,&nbsp;Emilie Burte ,&nbsp;Bénédicte Jacquemin","doi":"10.1016/j.envres.2025.122253","DOIUrl":"10.1016/j.envres.2025.122253","url":null,"abstract":"<div><div>This cross-sectional study assessed the association between surrounding greenness and two mental health outcomes according to degree of urbanization in the French CONSTANCES cohort. We included 114,717 participants. Depression in 2018 was evaluated by Center for Epidemiologic Studies Depression Scale (CES-D, from 0 to 60), and psychological distress in 2019 by General Health Questionnaire-12 (GHQ-12, from 0 to 12). Residential surrounding greenness was quantified by the mean of normalized difference vegetation index (NDVI) within 300m circular buffer around residential address. Adjusted negative binomial models were performed to assess the cross-sectional association between a 0.1 increase in NDVI at 300m and each outcome, separately in rural, peri-urban, urban and Paris areas. Stratified analyses by age and sex, and causal mediation models evaluating the role of physical activity were conducted. In 2018, the median age was 48.5, with 54.5 % being women. A 0.1 unit increase of NDVI was associated to lower depressive symptoms in peri-urban areas (incidence rate ratio (IRR) = 0.92; 95 % CI: 0.84–1.00) but higher in Paris (1.21; 1.06–1.38), and no associations were found in urban or rural areas. A 0.1 unit NDVI increase was associated to lower GHQ-12 score in peri-urban (IRR: 0.77; 95 % CI: 0.64–0.93) and urban areas (IRR: 0.79; 95 % CI: 0.65–0.97), with stronger effect size for middle-aged adults in urban areas and men in peri-urban areas. No associations were found in rural or Paris areas. Physical activity showed no mediation role. Surrounding greenness was associated with better mental health in peri-urban and urban but not in rural areas, possibly due to differences in types and uses of greenspaces.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122253"},"PeriodicalIF":7.7,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing energy efficiency in CO2-rich amine solution regeneration using a Cu-modified attapulgite catalysts","authors":"Dong Liu ,&nbsp;Zelu Zhou ,&nbsp;Zhitao Han ,&nbsp;Mengjing Zhang ,&nbsp;Aicheng Song ,&nbsp;Xi Wu ,&nbsp;Xiao Yang ,&nbsp;Dong Ma","doi":"10.1016/j.envres.2025.122220","DOIUrl":"10.1016/j.envres.2025.122220","url":null,"abstract":"<div><div>In recent years, significant attention has been drawn to the advancement of high-performance solid acid catalysts, which enhance the CO₂ desorption efficiency and concurrently lower energy requirements. Although solid acid catalysts show promise in reducing regeneration energy for amine-based CO₂ capture, achieving an optimal balance between activity, cost, and stability remains a major challenge. Herein a series of solid acid catalysts were prepared by modifying attapulgite (ATP) with various CuO_<em>x</em> loading, and the effect of Cu modification on CO₂ desorption performance was compared systematically. The results showed that CO₂ desorption performance of the as-prepared catalysts was in an order of 2/1-CuO_<em>x</em>/ATP &gt;1/1-CuO_<em>x</em>/ATP &gt;3/1-CuO_<em>x</em>/ATP &gt; CuO &gt; ATP. The CO₂ desorption capacity and rate were increased by 194 % and 205 %, respectively, the relative heat duty could be reduced by about 64.5 % by using 2/1-CuO_<em>x</em>/ATP to regenerate the rich MEA solution. ATR-FTIR technique was employed to confirm the catalytic effect and a possible catalytic CO₂ desorption mechanism was suggested. Additionally, the catalyst maintained 81 % of its initial CO₂ desorption capacity after seven consecutive absorption-desorption cycles, demonstrating excellent recoverability. This study provides a practical strategy for utilizing efficient, affordable and environmentally benign solid acid catalysts for CO₂ desorption, thereby advancing energy-efficient CO₂ capture technology.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122220"},"PeriodicalIF":7.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144510639","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":"Adsorption of weak polar zearalenone mycotoxins from water environment by tourmaline mineral powder of spontaneous electrical polarization properties","authors":"Na Zhang ,&nbsp;Xiaoyu Han ,&nbsp;Yinyuan Lei ,&nbsp;Junping Meng ,&nbsp;Hong Zhang ,&nbsp;Jinsheng Liang","doi":"10.1016/j.envres.2025.122244","DOIUrl":"10.1016/j.envres.2025.122244","url":null,"abstract":"<div><div>Zearalenone (ZEN), a weakly polar mycotoxin that is widespread in the water environment, is difficult to remove and poses potential hazards to animal, human, and environmental health. In this study, the adsorption performance of weakly polar ZEN in the water environment was investigated in detail, focusing on the enhancement effect of spontaneous electrical polarization of tourmaline mineral powder on the adsorption process. The results showed that the tourmaline mineral powder exhibited satisfactory adsorption ability for ZEN mycotoxin from water environment, with a maximum theoretical adsorption capacity of 10.29 mg/g. The adsorption isotherm analysis illustrated that the adsorption of tourmaline powder for ZEN was monolayer adsorption, while the adsorption kinetic analysis demonstrated that chemisorption was the major interaction mode and the adsorption process of ZEN mainly occurred on the external surface of tourmaline mineral powder. The adsorption mechanism of tourmaline mineral powder for ZEN might involve the hydrogen bonding, electron donor-acceptor interaction, iron ion complexation, and electrostatic attraction. Meanwhile, the coupling enhancement effect of the spontaneous electrical polarization property of tourmaline mineral powder on the adsorption process involves adjusting the pH value of the ZEN solution from 3.0 to 12.0 to 6.05–10.38, activating water molecules to reduce the ¹⁷O NMR half-peak width of water from 124 Hz to 64 Hz, and generating an electrostatic field with 6.23 × 10⁶ V/m. This study provided a novel, green, and efficient strategy for removing weakly polar pollutants from the water environment based on the unique crystal structure and spontaneous electrical polarization properties of tourmaline mineral powder.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122244"},"PeriodicalIF":7.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144502825","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":"Posidonia oceanica leaf bleaching: does it affect the plant photoprotective mechanisms?","authors":"Patrizia Stipcich ,&nbsp;Carmen Arena ,&nbsp;Giulia Ceccherelli ,&nbsp;Rosa Donadio ,&nbsp;Carlos Jimenez ,&nbsp;Vasilis Resaikos ,&nbsp;Ermenegilda Vitale ,&nbsp;Simonetta Fraschetti","doi":"10.1016/j.envres.2025.122233","DOIUrl":"10.1016/j.envres.2025.122233","url":null,"abstract":"<div><div>Seagrasses are vulnerable to climate change, although photoprotective mechanisms through photopigment rearrangement, have been detected to avoid photoinhibition and photooxidative stress at high temperatures. <em>Posidonia oceanica,</em> endemic to the Mediterranean Sea, is not an exception. Leaf bleaching has been associated to temperature but how it affects seagrass viability is still unknown. Through a depth-cross-transplantation experiment in Cyprus, we explored the role of temperature and irradiance in determining bleaching onset and analyzed changes in photopigments after transplantation. Unexpectedly, after three months, leaf bleaching did not increase in plants transplanted to a different depth from the origin (<em>e.g.</em> from −10 to −30). Rather, higher bleaching was found when cuttings were kept at their origin depth (<em>i.e.</em> −10m), likely indicating that light and temperature are not the main drivers of this phenomenon. Photopigment rearrangement at different light and temperature conditions suggested that usual photoprotective mechanisms, used by the plant to respond to environmental stressors, are preserved despite the presence of bleaching. Understanding this phenomenon has become pivotal to predict the performance of <em>P. oceanica</em> in a changing Mediterranean Sea.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"284 ","pages":"Article 122233"},"PeriodicalIF":7.7,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523329","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}