环境科学与生态学最新文献

{"title":"Corrigendum to \"Microplastic characteristics and their potential ecological risks to Auxis thazard and Symplectoteuthis oualaniensis in the Indian Ocean\" [Mar. Environ. Res. 210(2025) 107304].","authors":"Zhenghao Wang, Menghong Hu, Sijie Fan, Hanfeng Zheng, Cuihua Wang, Manzoor Ahmad, Lingzhi Li, Guoqing Zhao, Gangchen Zhang, Yuqing Zhang, Jianwei Hu, Youji Wang","doi":"10.1016/j.marenvres.2025.107355","DOIUrl":"10.1016/j.marenvres.2025.107355","url":null,"abstract":"","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":" ","pages":"107355"},"PeriodicalIF":3.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144718093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Isotopic evidence for spatial heterogeneity in trophic levels within benthic food webs across typical habitats along the coast of the eastern Laizhou Bay, China.","authors":"Qi Zhao, Shun-Jie Yuan, Xin Sun, Yan-Hao Zhang, Jin-Ji Liu, Pei-Dong Zhang","doi":"10.1016/j.marenvres.2025.107426","DOIUrl":"10.1016/j.marenvres.2025.107426","url":null,"abstract":"<p><p>This study employed stable isotope analysis (δ¹³C and δ¹⁵N) to examine the trophic sources, nutritional levels of consumers, and ecological niches of macrobenthic organisms across four distinct habitats, including artificial reef area (ARA), marine protected area (MPA), bottom seeding proliferation area (BSPA), and seagrass bed (SGB) in Laizhou Bay during spring and autumn. The results indicate that in spring, the δ¹³C values of particulate organic matter (POM) (-23.44 ± 0.30) and phytoplankton (-21.50 ± 0.65) in ARA, as well as the δ¹⁵N values of zooplankton (10.20 ± 1.21) and POM (6.57 ± 1.35) in autumn, were significantly higher than those in other regions. The diet of polychaetes (the dominant functional group) in ARA shifted from phytoplankton (34.6 %) in spring to zooplankton (59.3 %) in autumn. Regarding trophic niche area (TA), BSPA exhibited the largest value in spring (TA = 43.29), whereas ARA showed the highest value in autumn (TA = 22.53), with SGB displaying the smallest TA. Specifically, in the spring, the TA content in BSPA was 5.6 times higher than that in SGB, while in the autumn, the TA content in ARA was 3.5 times higher than that in SGB respectively. Comparative analyses among habitats suggest that habitat heterogeneity and seasonal dynamics jointly regulate trophic structure through resource partitioning and consumer adaptation. Furthermore, the artificial reef demonstrated elevated trophic levels and more complex trophic linkages, confirming its role in enhancing short-term ecosystem functioning via resource diversification. These findings highlight the importance of maintaining habitat diversity in coastal management and support the strategic deployment of artificial habitats to promote rapid ecological recovery.</p>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"211 ","pages":"107426"},"PeriodicalIF":3.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144812211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Annual distribution and deposition of atmospheric ²¹⁰Pb in Busan, the largest port city in Korea.","authors":"Jaeeun Lee, Hyunmi Lee, Jin Young Choi, Ji Hyun Lee, Intae Kim","doi":"10.1016/j.jenvrad.2025.107768","DOIUrl":"10.1016/j.jenvrad.2025.107768","url":null,"abstract":"<p><p>This study examined the annual and seasonal variations of ²¹⁰Pb in aerosols collected in Busan, a major port city in South Korea. Aerosol samples were obtained during two sampling campaigns: (i) total suspended particles (TSP) from April 2019 to February 2020, and (ii) particulate matter with diameters ≤10 μm (PM₁₀) and ≤2.5 μm (PM_2.5) from March 2020 to February 2021. The activity concentrations of ²¹⁰Pb ranged from 0.10 to 1.98 mBq m^-3 (TSP), 0.09-1.97 mBq m^-3 (PM₁₀), and 0.02-2.07 mBq m^-3 (PM_2.5), showing clear seasonal trends. Activities peaked in autumn and winter (October-February) and were lowest in summer (July-September), with up to two-fold seasonal variation. These patterns were mainly attributed to meteorological variability and increased anthropogenic emissions during colder months due to seasonal wind shifts. No significant differences in ²¹⁰Pb activity appeared among size-fractionated samples (TSP, PM₁₀, and PM_2.5), indicating a preferential association of ²¹⁰Pb with fine aerosols. Dry deposition fluxes of ²¹⁰Pb in Busan were comparable to those reported in other global cities, despite only including the dry component. ²¹⁰Pb activities in TSP correlated with ⁴⁰K in fallout dust, likely from resuspended soil, while ²¹⁰Pb in PM_2.5 paralleled ⁷Be variations in air. Moreover, ²¹⁰Pb/Pb ratios showed seasonal changes, notably in PM_2.5 during the dry season. The results suggest that aerosol behavior in Busan is notably influenced by anthropogenic sources during dry months, especially in fine dust (e.g., PM_2.5). Overall, ²¹⁰Pb proves useful as a radioactive tracer for understanding aerosol dynamics.</p>","PeriodicalId":15667,"journal":{"name":"Journal of environmental radioactivity","volume":"289 ","pages":"107768"},"PeriodicalIF":2.1,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Corrigendum to \"Combined effects of ocean acidification and warming on phytoplankton productivity and community structure in the coastal water of Southern East\" [Mar. Environ. Res. (2025) 107352].","authors":"Yukun Zhang, John Beardall, Kunshan Gao","doi":"10.1016/j.marenvres.2025.107419","DOIUrl":"10.1016/j.marenvres.2025.107419","url":null,"abstract":"","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":" ","pages":"107419"},"PeriodicalIF":3.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Integrating multi-level approaches to assess blue mussel (Mytilus spp.) responses to short-term temperature and salinity changes.","authors":"Colleen Guinle, Ridho Wiranda Gurning, Clément Baratange, Bruno Cognie, Aurélie Mossion, Gaëtane Wielgosz-Collin, Samuel Bertrand, Grégory Montiel, Laurence Poirier, Paul Déléris, Aurore Zalouk-Vergnoux","doi":"10.1016/j.marenvres.2025.107436","DOIUrl":"10.1016/j.marenvres.2025.107436","url":null,"abstract":"<p><p>Climate change is exacerbating temperature and salinity variations in marine ecosystems, thereby challenging the physiological resilience of bivalves like blue mussels (Mytilus spp.). Despite comprehensive studies on these organisms' physiological and molecular responses to such environmental stress, our understanding of tissue-specific adaptations and the role of lipid metabolism is limited. This study investigated the short-term effects of warming (+3.5 °C and +6.0 °C) and reduced salinity (-6 and -12 PSU) on Mytilus spp. using an integrative approach that included physiological indicators, lipidomic, biochemical, and molecular analyses across several tissues. The mussel clearance rate increased under thermal stress and decreased under hyposaline stress. Both stressors resulted in a lower condition index, suggesting energy depletion and specific metabolic changes. Lipidomic analysis revealed significant fatty acid and lipid composition alterations, indicating membrane remodelling to maintain cellular integrity. Gene expression analyses demonstrated distinct responses across tissues: the gills activated protective mechanisms (i.e., up-regulation of heat shock protein-encoding genes (hsp)) in response to both stressors, whereas the digestive gland prioritised energy conservation and damage mitigation (i.e., down-regulation of hsp, metabolic, and apoptotic marker genes). These divergent responses indicate that mussels use tissue-specific strategies to balance stress resistance and metabolic trade-offs. Despite demonstrating notable physiological plasticity, our findings highlight the significant metabolic costs associated with environmental stress adaptation. This study provides new insights into the complex, multi-level strategies that Mytilus spp. employ to maintain homeostasis in the face of multiple stressors, with implications for predicting their resilience under future climate conditions.</p>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"211 ","pages":"107436"},"PeriodicalIF":3.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144817072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Safety assessment of copper- and zinc-based metal-organic frameworks (MOFs) for embryonic development and adult fish of Oryzias melastigma.","authors":"Mohammad Sadiq Nikzad, Jiangbing Qiu, Guixiang Wang, Xue Wang, Natnael Sisay Demo, Aifeng Li","doi":"10.1016/j.aquatox.2025.107529","DOIUrl":"10.1016/j.aquatox.2025.107529","url":null,"abstract":"<p><p>The increasing prevalence of harmful algal blooms (HABs), specifically those resulted by toxigenic Alexandrium spp., notably threats human health and aquatic ecosystem. Metal organic frameworks (MOFs), particularly copper- and zinc-based MOFs have emerged as promising materials to control HABs. However, their application safety needs to be assessed because of poor knowledge of their ecotoxicity to marine organisms. In this study, the toxicity of Cu-MOF and Zn-MOF was evaluated to Oryzias melastigma at embryonic and adult stages. The Cu-MOF exhibited a concentration-dependent mortality and hatching rate at concentrations ≥ 2.0 mg L^-1. The Zn-MOF exhibited similar effects when the exposure doses ≥ 80 mg L^-1. Additionally, adult fish after exposure to Cu-MOF showed significant mortality rate at higher concentrations (≥ 4.0 mg L^-1), beside elevated oxidative stress markers. In contrast, Zn-MOF did not show mortality and oxidative stress although bioaccumulation of Zn²⁺ occurred in tissues. Based on the safety assessment of MOFs to marine medaka, the dosages for application of Cu-MOF (≤ 1.0 mg L^-1) and Zn-MOF (≤ 20 mg L^-1) are safe for controlling A. minutum-forming HABs. This study hints that the application of MOFs in mitigation of HABs should be carefully evaluated to balance their benefits in contrast to ecological risks.</p>","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"287 ","pages":"107529"},"PeriodicalIF":4.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144803038","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":"Trophic transfer of per- and polyfluoroalkyl acids in a periphyton-mayfly-zebrafish food chain.","authors":"Matthew R Farrell, David B Buchwalter, Rebecca A Weed, Jeffrey R Enders, Antonio Planchart","doi":"10.1016/j.aquatox.2025.107500","DOIUrl":"10.1016/j.aquatox.2025.107500","url":null,"abstract":"<p><p>Per-and polyfluoroalkyl substances (PFAS) are ubiquitous contaminants in freshwater ecosystems. Many PFAS are incorporated into food webs, with potential effects on ecological and human health. However, PFAS incorporation into the base of aquatic food webs remains poorly understood. The goal of this study was to quantify the uptake and trophic transfer of both legacy PFAS and the perfluoroether acid Nafion byproduct 2 (NBP2) using a simulated freshwater food chain in a lab setting. Natural periphytic biofilms were placed into trays containing equimolar binary aqueous PFAS mixtures at environmentally relevant concentrations for five days. Following the initial exposure period, newly hatched mayfly larvae were introduced into each tray to feed on periphyton for most of their larval development. The mature larvae were then fed to zebrafish. All water and biota samples contained detectable levels of the tested PFAS. All PFAS were more concentrated in periphyton than in water, and four of six PFAS were further concentrated in mayfly larvae relative to periphyton. PFDA was the most accumulative in all biota. PFAS concentrations in zebrafish were significantly correlated with those in larval mayflies. Assimilation efficiencies in zebrafish were high (>70 %) for all compounds. Bioaccumulation of PFAS in periphyton and mayflies was positively correlated with log K_OW and number of carbons. Our findings demonstrate the functionality of the periphyton-mayfly-zebrafish food chain for studying the trophic transfer of PFAS, and provide novel data showing that the bioaccumulation of NBP2 is comparable to legacy PFAS.</p>","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"287 ","pages":"107500"},"PeriodicalIF":4.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144820262","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":"Low oxygen stress alters response to sublethal copper exposure without inducing cross-tolerance in the blue mussel Mytilus edulis.","authors":"Reshma Kalarical Janardhanan, Milen Nachev, Bernd Sures, Inna M Sokolova","doi":"10.1016/j.aquatox.2025.107523","DOIUrl":"10.1016/j.aquatox.2025.107523","url":null,"abstract":"<p><p>The Baltic Sea's limited water exchange and densely populated catchment area contribute to the frequent co-occurrence of hypoxia and chemical pollutants such as copper (Cu), raising concerns about the effects of sequential stressors on marine organisms. This study tested whether pre-exposure to intermittent oxygen stress alters the physiological and immune responses of Mytilus edulis to subsequent Cu exposure. Mussels were preconditioned for 21 days to either mild intermittent hypoxia (7 h/day at ∼2 mg/L DO) or severe intermittent anoxia (2 days/week at <0.01 mg/L DO), followed by a 7-day exposure to sublethal Cu (20 µg/L) under normoxia. Hypoxia preconditioning impaired Cu homeostasis, leading to elevated Cu accumulation. Hypoxia-exposed mussels maintained immune function (phagocytosis, lysosomal integrity, acid phosphatase activity), while anoxia disrupted phagocyte-lysosome balance. Cu exposure alone reduced hemocyte abundance and increased acid phosphatase activity, indicating typical immunotoxic effects that were not alleviated by prior oxygen stress. Lipid reserves declined under both oxygen regimes, while carbohydrate and protein levels were reduced by hypoxia. Anoxia preconditioning mitigated Cu-induced energy depletion, as reflected by elevated lipid and carbohydrate levels. Mitochondrial electron transport system activity increased following low oxygen preconditioning and further during Cu exposure, suggesting elevated energy demands at post-stress recovery/detoxification. Despite these bioenergetic adjustments, oxidative stress markers (total antioxidant capacity, lipid peroxidation) and stress gene expression (hsp70, hsp90, GADD45A, nrf2, NfκB) remained stable across treatments. In conclusion, while oxygen stress modulated mussel responses to Cu, it did not confer cross-tolerance, highlighting the complex and context-dependent nature of multiple stressor interactions in coastal environments.</p>","PeriodicalId":248,"journal":{"name":"Aquatic Toxicology","volume":"287 ","pages":"107523"},"PeriodicalIF":4.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797755","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":"Ocean acidification impairs growth and induces oxidative stress in the macroalgae Ulva fasciata and Petalonia fascia.","authors":"Fernanda Ribeiro de Freitas, Letícia Viana Barboza, Vitória Caroline Pereira Kühl, Ítalo Braga Castro, Milton Costa Lima Neto","doi":"10.1016/j.marenvres.2025.107429","DOIUrl":"10.1016/j.marenvres.2025.107429","url":null,"abstract":"<p><p>Ocean acidification (OA), driven by increasing anthropogenic CO₂ uptake, poses a significant threat to marine ecosystems; understanding the physiological responses of key primary producers like macroalgae is crucial for predicting ecological consequences. This study investigated the impacts of OA on the green alga Ulva fasciata and the brown alga Petalonia fascia. We aimed to determine the effects of decreased pH on their growth, photosynthetic performance, biochemical composition, and oxidative stress responses. Algae were exposed for 15 days to three pH levels: 8.2, 7.4 and 6.5. We measured multiple parameters including relative growth rate, chlorophyll a fluorescence parameters, H₂O₂ content, lipid peroxidation, and activities of superoxide dismutase and catalase. Results showed that decreasing pH reduced relative growth rate in both species, with reductions of up to 58 % in U. fasciata and 64 % in P. fascia at pH 6.5. Photosynthetic efficiency and chlorophyll content also declined significantly under lower pH, while non-photochemical quenching generally increased. Both species exhibited increased membrane damage, H₂O₂ content, and TBARS levels at lower pH, indicative of oxidative stress. Antioxidant enzyme activities were significantly modulated, with significant interactions between pH and species observed for most parameters, highlighting differential physiological adjustments. These findings indicate that both Ulva fasciata and Petalonia fascia are susceptible to detrimental effects from simulated OA, suggesting potential shifts in the competitive balance and structure of intertidal macroalgal communities.</p>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"211 ","pages":"107429"},"PeriodicalIF":3.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144799552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Common bottlenose dolphin habitat suitability in Malta's coastal waters as a human-altered environment.","authors":"Francesca Soster, Charles Galdies, Tim Awbery, Adam Gauci, Benjamin Metzger, Nicholas Barbara, Bruno Díaz López","doi":"10.1016/j.marenvres.2025.107422","DOIUrl":"10.1016/j.marenvres.2025.107422","url":null,"abstract":"<p><p>Marine ecosystems, particularly in coastal regions, are increasingly shaped by human activities occurring both on land and at sea. As anthropogenic pressures intensify, understanding species habitat preferences and their interactions with human-altered environments is critical for guiding conservation efforts. This study provides the first comprehensive assessment of bottlenose dolphin (Tursiops truncatus) habitat suitability and exposure to human activities in Maltese waters, a region characterised by intense maritime activity but limited research effort and baseline knowledge on the species. Using a MaxEnt model, we integrated sightings from multiple surveys (2012-2021) with key environmental (salinity, chlorophyll-a, depth) and anthropogenic (vessel traffic density) predictors to identify areas of ecological importance and potential conflict. Results revealed a strong preference for shallow coastal waters, primarily over the Malta Plateau. Salinity and chlorophyll-a emerged as the strongest environmental drivers, while vessel traffic density had limited standalone influence, possibly reflecting dolphins' behavioural adaptability in resource-rich but human-impacted environments. An exposure index was developed to identify areas where high habitat suitability overlaps with vessel traffic and Fish Aggregating Device (FAD) deployment, highlighting several zones of potential spatial conflict. These findings highlight the importance of integrating ecological and anthropogenic factors to identify high-risk areas and inform more effective conservation strategies for bottlenose dolphins in Malta's coastal waters.</p>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"211 ","pages":"107422"},"PeriodicalIF":3.2,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144812208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}