Journal of environmental quality最新文献

{"title":"Ex vitro standardization enables evaluation of phosphorus-use strategies in Pampa biome grasses.","authors":"Júlia Farias, Anderson Cesar Ramos Marques, Leandro Bittencourt de Oliveira, Bianca Knebel Del Frari, Raíssa Schwalbert, Katieli Bernardy, Márcio Renan Weber Schorr, Fernando Nicoloso, Desalegn D Serba, Jonas Baltrusaitis, Clinton Williams","doi":"10.1002/jeq2.70242","DOIUrl":"10.1002/jeq2.70242","url":null,"abstract":"<p><p>Native grasses of the Pampa biome are essential for ecosystem functioning and restoration, yet understanding of how native species respond to nutrient availability remains limited by challenges in standardizing plant material for controlled experiments. To address this, we developed a reproducible ex vitro propagation protocol to standardize native grass materials and applied it to three representative Pampa biome grasses, Paspalum notatum, Andropogon lateralis, and Axonopus affinis. Using a minimally disturbed soil column system, we evaluated species-specific responses to contrasting phosphorus (P) availability through measurements of plant growth, P dynamics, and phosphatase activity. Propagation was assessed using successive tiller transplants over 60 days, followed by a soil experiment to quantify plant growth, P dynamics, and phosphatase activity. The propagation protocol enabled rapid production of uniform plant material, generating up to 1197.9, 131.4, and 39.4 viable plantlets per initial plant for A. affinis, P. notatum, and A. lateralis, respectively. Results indicate contrasting P-use strategies among species. Paspalum notatum showed strong increases in biomass and leaf P concentration under P addition, consistent with a resource-acquisitive strategy, and reduced phosphatase activity under high P availability. In contrast, A. lateralis exhibited limited growth response to P addition but maintained greater P-use efficiency under low P conditions, indicative of a resource-conservative strategy. These findings demonstrate that native grasses differ in their physiological responses to P availability, reflecting trade-offs between productivity and nutrient-use efficiency. The propagation protocol provides a standardized platform for controlled studies, while the identified functional differences support trait-based species selection under contrasting soil P conditions.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":"e70242"},"PeriodicalIF":2.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13534748/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148873786","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}

{"title":"Legacy phosphorus: From environmental challenge to resource opportunity.","authors":"Will J Brownlie, Bryan M Spears","doi":"10.1002/jeq2.70261","DOIUrl":"10.1002/jeq2.70261","url":null,"abstract":"","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":"e70261"},"PeriodicalIF":2.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13534754/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148874138","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}

{"title":"Vegetated buffer strips for reducing diffused agricultural water pollution in Africa.","authors":"Ajoke Fehintola Idayat Akindele, Itxaso Ruiz","doi":"10.1002/jeq2.70254","DOIUrl":"10.1002/jeq2.70254","url":null,"abstract":"<p><p>Agricultural pollution poses a significant global threat to biodiversity, water quality, and human health, with particularly acute to chronic toxic impacts on living beings in low- and middle-income countries. Vegetated buffer strips (VBSs) are recognized as a cost-effective, nature-based solution for managing agricultural pollution risks. Despite their proven efficacy, the adoption of VBSs remains very limited across African countries. This review provides comprehensive scientific literature to assess VBS effectiveness in mitigating diffuse agricultural water pollution, with a specific focus on its potential for Africa. Out of the initial pool of publications, 35 studies (23.3%) met the inclusion criteria, consistently demonstrating the statistically significant effectiveness of VBSs in reducing non-point source pollution (sediment, particulate, dissolved forms of phosphorus, pesticides, and dissolved nitrogen). Beyond direct pollution control, the review underscores the broader benefits of VBSs, including improved sediment and nutrient management during runoff events, enhanced biodiversity, and contributions to carbon sequestration. The findings highlight a critical need for tailored policy development and robust economic incentives to support VBS implementation in Africa. Successful integration of VBS can be instrumental in achieving the 2030 agenda for sustainable development, particularly in improving food security and water quality across the continent. This work advocates for localized research and collaborative efforts to unlock the full potential of VBS as a sustainable agricultural practice in diverse African contexts.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":"e70254"},"PeriodicalIF":2.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13531403/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148865171","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}

{"title":"Soil polycyclic aromatic hydrocarbons in energy chemical industrial plants of Northwest China: Sources and health risk implications from a field-based study.","authors":"Mengcheng Wu, YunZhou Tan, Guodong Kang, Ping Wu, Mengjiao Li, Liangliang Liu, Ning Wang, Ling Wang, Shenghu Zhang, Leilei Lu","doi":"10.1002/jeq2.70258","DOIUrl":"10.1002/jeq2.70258","url":null,"abstract":"<p><p>Polycyclic aromatic hydrocarbons (PAHs) in soils of energy chemical industrial plants pose considerable ecological and health risks. However, comprehensive studies between petrochemical and coal chemical plants in arid Northwest China remain limited. In this study, 75 surface soil samples (0-20 cm) were collected from 15 large-scale plants (four petrochemical and 11 coal chemical plants) across the region. Sixteen priority PAHs (∑PAHs) were quantified, and source apportionment was conducted using diagnostic ratios and principal component analysis-multiple linear regression (PCA-MLR). In addition, health risks were evaluated using toxic equivalence factors and incremental lifetime cancer risk (ILCR) models. Results showed a stark contrast in PAHs concentrations, with coal chemical plants averaging 4652.2 ng/g and reaching up to 188,506.0 ng/g at a coal tar processing site, compared to 225.6 ng/g in petrochemical plants. Four-ring PAHs were predominant, accounting for 64.5% and 52.1% of total PAHs in coal chemical and petrochemical soils, respectively, indicative of high-temperature combustion sources. PCA-MLR analysis identified coal combustion as the dominant source at coal chemical sites (96.5%), while petrochemical sites exhibited mixed sources, including oil leakage (49.6%) and vehicular emissions (25.6%). Health risk assessment revealed that ILCR values exceeded the US EPA threshold of 10^-6 at seven sampling points in coal chemical plants, with the highest risk observed at site BXT-2 (1.99 × 10^-4), primarily driven by dermal and oral exposure to benzo[a]pyrene. These findings highlight the urgent need for stricter control of high-temperature industrial processes and improved management of hazardous waste in energy chemical industrial plants.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":"e70258"},"PeriodicalIF":2.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13534752/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148874248","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}

{"title":"Polyvinylpolypyrrolidone-induced mesoporosity and surface modification in MoO₃/V₂O₅ nanocomposites for efficient and reusable dye adsorption.","authors":"Jaspreet Kaur, Priyanka Verma, Rajesh Kumar","doi":"10.1002/jeq2.70259","DOIUrl":"10.1002/jeq2.70259","url":null,"abstract":"<p><p>Water pollution from textile industries remains a significant environmental challenge due to the discharge of dye-containing effluents into aquatic systems. In the present study, a novel polyvinylpolypyrrolidone (PVPP)-functionalized MoO₃/V₂O₅ nanocomposite was synthesized through a wet chemical route and evaluated as an adsorbent for rapid dye removal from wastewater. The structural, morphological, and surface characteristics of the nanocomposite were investigated using X-ray diffraction, Williamson-Hall analysis, Fourier transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, zeta potential measurements, and Brunauer-Emmett-Teller and Barrett-Joyner-Halenda (BET-BJH) surface area analysis. The incorporation of PVPP resulted in enhanced surface properties, increased negative surface charge, and modified morphology. The synthesized nanocomposite exhibited a crystallite size of 15.3 nm, a lattice strain of 0.43%, and a zeta potential of -30 mV, favoring the adsorption of cationic dye molecules through electrostatic attraction. BET-BJH analysis revealed a mesoporous structure with a Type IV adsorption isotherm, a surface area of 25 m²/g, and an average pore diameter of 6.05 nm, providing numerous active adsorption sites. Adsorption studies demonstrated rapid removal of methylene blue, with the characteristic absorption peak at 664 nm disappearing completely within 5 min, corresponding to 99% removal efficiency. Industrial wastewater samples also showed complete elimination of dye-related absorption peaks after treatment. FTIR analysis of the dye-loaded adsorbent indicated the involvement of electrostatic interactions, hydrogen bonding, and n-π interactions. The nanocomposite maintained excellent reusability over six adsorption-desorption cycles without detectable leaching, indicating its suitability for wastewater treatment applications.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":"e70259"},"PeriodicalIF":2.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13534753/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148874260","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}

{"title":"Legacy phosphorus as an economic and agronomic management problem.","authors":"Antti Iho","doi":"10.1002/jeq2.70263","DOIUrl":"10.1002/jeq2.70263","url":null,"abstract":"","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":"e70263"},"PeriodicalIF":2.6,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13534749/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148874225","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}

{"title":"Whole orchard recycling in California's Central Valley: Benefits, management, and adoption","authors":"C. Mae Culumber,&nbsp;Brent Holtz,&nbsp;Suduan Gao,&nbsp;Amisha Poret-Peterson,&nbsp;Touyee Thao,&nbsp;Cameron Zuber,&nbsp;Franz Niederholzer,&nbsp;Mohammad Yaghmour,&nbsp;Diana Camarena-Onofre,&nbsp;Daniel Rivers,&nbsp;Greg Browne,&nbsp;Benjamin T. Halleck","doi":"10.1002/jeq2.70221","DOIUrl":"https://doi.org/10.1002/jeq2.70221","url":null,"abstract":"<p>Whole orchard recycling (WOR) has become a common practice in California (CA) orchards and vineyards due to declining options for agricultural biomass disposal. WOR is the process by which entire orchards or vineyards are shredded into chips, spread onto the soil surface, and incorporated into the soil before replanting a new crop. The paper summarizes current knowledge on WOR's impact on soils, crops, and the environment and outlines efforts to promote large-scale adoption across California. From 2008 to 2019, field trials were established at eight sites in the Central Valley to identify best management guidelines and measure changes in soil health, environment, and replanted orchard performance over time. Biomass incorporation ranged from 56 to 191 metric tons ha⁻¹ across all sites. Results clearly show WOR increased soil organic carbon and improved crop yield. WOR improved soil water and nitrogen (N) retention and did not increase nitrate leaching. Carbon dioxide (CO₂) emissions from biomass decomposition were highest in the first year following WOR but declined substantially thereafter, coinciding with soil carbon (C) sequestration and improvement of other soil properties. State incentive programs and outreach extension efforts have played a significant role in fostering acceptance of the practice and implementation. While the long-term benefits of WOR are clear, further research is needed to optimize water and fertilizer management in replanted systems. The outcomes of this research and the demonstrated success of WOR in California provide a model for sustainable orchard recycling practices in other regions facing biomass disposal and soil health challenges.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.70221","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849357","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}

{"title":"Pesticide occurrence, transformation, and transport from wastewater treatment plants into stream networks with diverse land uses","authors":"Kyra Sigler,&nbsp;Matthew V. Russell,&nbsp;William Ford,&nbsp;Wayne Sanderson,&nbsp;Tiffany L. Messer","doi":"10.1002/jeq2.70249","DOIUrl":"https://doi.org/10.1002/jeq2.70249","url":null,"abstract":"<p>Neonicotinoid insecticides and strobilurin fungicides are detected in many environmental compartments and have been associated with negative environmental and human health implications. Wastewater treatment plants (WWTPs) are often hotspots for introducing such contaminants into the environment. Therefore, the occurrence of strobilurin fungicides, neonicotinoids, and their metabolites at two WWTPs with varying land uses and population sizes was investigated. Polar organic chemical integrative samplers were deployed in WWTP influent and effluent and placed upstream and downstream of the effluent mixing zone for 2 weeks in April and July 2022. Biosolids were also collected at each time point. Neonicotinoids were detected with the highest frequency (68%), followed by strobilurin fungicides (49%) and neonicotinoid metabolites (31%). Time-weighted average concentrations for influent/effluent ranged from 85.2 ± 87.8 to 409.4 ± 74.5 ng/L. Pesticide concentrations, specifically the metabolites, typically increased from influent to effluent, resulting in effluent having higher pesticide loads than influent. Pesticide concentrations varied between the upstream and downstream monitoring locations by analyte, with WWTP samples in the highly developed region having significantly higher concentrations of pesticides and less variation by monitoring period. Chronic ecotoxicity benchmarks for freshwater invertebrates for imidacloprid were surpassed in treated effluent at both WWTPs in July and in the downstream monitoring location in the heavily developed area. Findings support the need for further exploration of pesticide contributions from WWTPs to river systems, specifically related to metabolite contributions to downstream streams and their effects on aquatic environments.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849065","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":"The spatial and temporal distribution of Staphylococcus aureus along a tropical Hawaiian watershed","authors":"Maria Steadmon,&nbsp;Josh Buchanan,&nbsp;Maria Petelo,&nbsp;Matthew C. I. Medeiros,&nbsp;Kiana L. Frank","doi":"10.1002/jeq2.70248","DOIUrl":"https://doi.org/10.1002/jeq2.70248","url":null,"abstract":"<p><i>Staphylococcus aureus</i> is a leading cause of community-acquired skin and soft-tissue infections worldwide. One major route of exposure is recreating in marine waters, but knowledge is limited regarding the drivers of <i>S. aureus</i> in surface waters that discharge into marine environments. This study explores spatial and temporal distributions of <i>S. aureus</i>, including antimicrobial-resistant and virulence genes, using both culture-dependent and molecular techniques across a tropical Hawaiian watershed with a gradient of human influence. Negative binomial generalized linear mixed models revealed that the interaction between spatial and temporal factors was the strongest predictor of <i>S. aureus</i> and associated genes. Cultured <i>S. aureus</i> was highest at mid-watershed sites in summer, which included a popular swimming hole, suggesting human shedding as a significant source. Molecular detection of <i>S. aureus</i> (<i>femA</i> gene) yielded concentrations two orders of magnitude higher than cultured concentrations and peaked at estuarine sites with the greatest nutrients and water residence times. In the winter at upstream sites with no public access, staphylococci antibiotic-resistant (<i>mecA</i>) and <i>S. aureus</i> virulence gene (<i>etb</i>) were elevated, indicating highly pathogenic <i>S. aureus</i> strains in surface waters may originate from zoonotic sources. Our findings indicate that human and zoonotic sources contribute antibiotic-resistant and virulent <i>S. aureus</i> to watersheds, with streams facilitating environmental transmission to marine waters. This watershed-scale assessment enables the prediction of spatial and temporal conditions associated with elevated <i>S. aureus</i> concentrations, thereby reducing exposure and infections.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849067","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":"Evaluation of porous concrete leachate to improve water quality","authors":"Tangina Aktar Tamanna,&nbsp;Sarah MacPherson,&nbsp;Philip Wiredu Addo,&nbsp;ABM Shahed,&nbsp;Manish Ojha,&nbsp;Mark Lefsrud","doi":"10.1002/jeq2.70255","DOIUrl":"https://doi.org/10.1002/jeq2.70255","url":null,"abstract":"<p>Porous concrete is increasingly explored as a multifunctional material for water quality improvement, stormwater management, and emerging agricultural applications. However, uncertainties remain regarding nutrient and trace metal leaching, particularly for freshly cast concrete. This study investigated the time-dependent leaching behavior of a bio-receptive porous concrete substrate designed for ecological and hydroponic applications. Porous concrete tiles were immersed in distilled water for a 12-week period. Weekly leachate samples were analyzed to determine Ca, P, K, S, Mg, B, Fe, Zn, and Cu concentrations using inductively coupled plasma optical emission spectrometry. Leachate pH rose from 6.8 at Week 0 to a peak above 11.5 during Weeks 1–3, before declining progressively to approximately 9.7 by Week 12. Electrical conductivity peaked at over 3200 µS/cm at Week 4 before gradually decreasing. Most elements exhibited a pronounced first flush effect, characterized by elevated concentrations during the initial weeks (0–3 Weeks) followed by stabilization over time. Ca, K, S, and Mg showed significant (Weeks 0–3; linear mixed model, <i>p</i> &lt; 0.05) early release linked to dissolution of readily soluble and surface bound phases. Trace metals, including Zn, Cu, and Fe, showed decreasing concentrations after the initial sampling period, with levels stabilizing at low concentrations (&lt;0.05 µg/mL), suggesting progressive immobilization within the porous concrete matrix. Overall, results indicate short-term chemical reactivity but long-term elemental stability. These findings support the environmental compatibility of bio-receptive porous concrete and its potential application in hydroponic systems, green infrastructure, and decentralized water treatment.</p>","PeriodicalId":15732,"journal":{"name":"Journal of environmental quality","volume":"55 5","pages":""},"PeriodicalIF":2.6,"publicationDate":"2026-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jeq2.70255","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148849025","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}