Marine environmental research最新文献

{"title":"Prey engulfment as the dominant pathway of methylmercury uptake in a heterotrophic dinoflagellate","authors":"Patricia K. Myer,&nbsp;Robert P. Mason,&nbsp;Zofia A. Baumann","doi":"10.1016/j.marenvres.2025.107348","DOIUrl":"10.1016/j.marenvres.2025.107348","url":null,"abstract":"<div><div>Methylmercury (MeHg) uptake by the dinoflagellate <em>Oxyrrhis marina</em> was investigated to determine if uptake from the dissolved phase or prey engulfment contribute more to cellular MeHg accumulation during 8-h exposures. Effects of varying environmental factors were examined, including dissolved organic carbon (DOC) concentration, salinity, and temperature. The overarching hypothesis was that dinoflagellates utilizing heterotrophy would accumulate higher MeHg due to prey engulfment than from the uptake of MeHg-DOC complexes. Furthermore, it was hypothesized that MeHg uptake would be highest at the salinity optimal for <em>O. marina</em> and dependent on temperature. Laboratory experiments were carried out to test these hypotheses by varying: 1.) dissolved organic matter concentration and prey presence (DOC: 130 vs. 210 μM vs. <em>Isochrysis galbana</em> as prey at 5 × 10⁵ cells mL⁻¹); 2.) salinity (11, 17, and 34); and 3.) temperature (12, 15, and 22 °C), representing possible conditions in a temperate estuary. Results show that MeHg uptake was highest in the presence of phytoplankton prey, and there was no significant difference in uptake between DOC concentrations. Among salinity treatments, MeHg uptake from water was significantly lower at 11, compared to 17 and 34. Contrary to what was hypothesized, temperature had no effect on MeHg uptake. Overall, these studies support the hypothesis that the consumption of phytoplankton prey by this dinoflagellate increases its MeHg burden, and provide more detail of the contrasting factors influencing MeHg assimilation by heterotrophic protists in the presence of DOC.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107348"},"PeriodicalIF":3.0,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581043","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":"Ecological links between the yellowfin tuna and an isolated archipelago in the Atlantic Ocean revealed by otolith chemistry","authors":"Rafael Menezes ,&nbsp;Aristóteles P.N. Queiroz ,&nbsp;Jacques Panfili ,&nbsp;Fabrice Duponchelle ,&nbsp;Maylis Labonne ,&nbsp;Francisco M. Santana ,&nbsp;Rosangela P.T. Lessa","doi":"10.1016/j.marenvres.2025.107346","DOIUrl":"10.1016/j.marenvres.2025.107346","url":null,"abstract":"<div><div>The Saint Peter and Saint Paul Archipelago (SPSPA) is a small, remote group of islands on the Mid-Atlantic Ridge that is home to many large-bodied migratory pelagic fishes. Here, we used the yellowfin tuna (<em>Thunnus albacares</em>) as a model species to test the hypothesis that the SPSPA hosts subpopulations originating from other regions of the Atlantic based on the otolith chemistry. Juvenile yellowfin tunas were caught in the SPSPA over a one-year cycle, and their otoliths were analyzed using LA-ICPMS. The chemical composition of the natal origin in the otoliths was investigated and subsequently compared to that of the capture site. A K-means clustering algorithm identified two clusters for the natal origin, which differed mainly in terms of the elements Mg and Cu, indicating that two subpopulations of the yellowfin tuna occur in the SPSPA. A strong, peculiar signature was found for the SPSPA capture site, with the highest concentrations of Zn, Ba and Sr. No overlap was found between the natal origins and capture site, revealing that the SPSPA was not a spawning ground for the individuals. Zinc was the most influential element in separating groups, which may be an indicator of the passage of fish by the SPSPA. Herein, we suggest that the natal origins corresponded to the Gulf of Guinea and Southern Cape Verde Islands and that the SPSPA may serve as a stopover site during Atlantic migratory routes of subpopulations of the yellowfin tuna. Mark-recapture data from ICCAT support the suggested natal origins and migratory routes addressed here. These findings demonstrate the pivotal role of the SPSPA in the lifecycle of subpopulations of the yellowfin tuna crossing the Atlantic Ocean.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107346"},"PeriodicalIF":3.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581042","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":"Relationship between antibiotic resistance genes and microbiome in the Arctic marine sediments","authors":"Ming Kong ,&nbsp;Mingyang Wang ,&nbsp;Sijia Liang ,&nbsp;Hui Chen ,&nbsp;Shuai Zhang ,&nbsp;Minggang Zheng ,&nbsp;Chenxi Zhang","doi":"10.1016/j.marenvres.2025.107345","DOIUrl":"10.1016/j.marenvres.2025.107345","url":null,"abstract":"<div><div>The global dissemination of antibiotic resistance genes (ARGs) presents a significant threat to public health and ecosystems. The Arctic has been contaminated with ARGs due to the global spread of ARGs. However, the remote nature of the Arctic need a comprehensive characterization of the diversity and distribution of ARGs. In this study, ARGs and bacterial communities in marine sediments from the Arctic were analyzed using qPCR and 16s rRNA gene sequencing. The results indicated that the abundance of ARGs was correlated with the location of the sediments. The absolute abundance of target ARGs exhibited higher values in BJ2 and BJ3. Microbial community composition showed low similarity, with significant structural differences across samples. Proteobacteria was the dominant phylum in all sediment samples, with a large number of highly abundant unclassified genera present. Additionally, the Mantel test and correlation analyses revealed a significant relationship between the abundance of ARGs and bacterial communities. Acidobacteriota was identified as a potential host for <em>sul1</em> and <em>bla</em>_<em>TEM</em>. In summary, this study provides insights into the relationship between antibiotic resistance genes and microbiome in Arctic marine sediments and serves as an important reference for global ARGs management strategies.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107345"},"PeriodicalIF":3.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581040","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":"Growth rates and response to nutrient variability in the green tide forming alga Ulva stenophylloides from Algarrobo Bay, Chile","authors":"S.A. Navarrete ,&nbsp;Andrés E. González ,&nbsp;Juan Faúndez ,&nbsp;Loretto Contreras-Porcia ,&nbsp;Alejandra Núñez ,&nbsp;Jorge Rivas ,&nbsp;Sofia Chacano ,&nbsp;Laura Farías ,&nbsp;Gonzalo S. Saldías ,&nbsp;Fabián J. Tapia","doi":"10.1016/j.marenvres.2025.107338","DOIUrl":"10.1016/j.marenvres.2025.107338","url":null,"abstract":"<div><div>Blooms of green macroalgae have become a recurring phenomenon along many shores. Here, we conducted oceanographic surveys and field experiments to quantify daily growth rates of <em>Ulva stenophylloides,</em> the predominant species in the green tides that occur year-round at the southern end of the wave-protected open bay of Algarrobo, central Chile. We assessed the association between growth and nutrient availability, as well as other environmental variables, and compared growth rates between the south end of the bay and the north end (1.6 km away), where green tides are absent. Fronds of <em>U. stenophylloides</em> were suspended at ∼3–4 m depth from moorings anchored at 10 m depth at both sites. Daily growth rates were high at both locations, ranging from a 9 %–121 % increase in wet biomass, but were significantly higher at the southern site. Nutrient concentrations in water samples collected once daily were not correlated with algal growth and showed no consistent differences between sites. However, high-frequency temperature records from moorings revealed rapid (minutes to hours) cold-water pulses at the southern end, which were nearly absent in the north. Given the strong inverse relationship between temperature and nitrate in the bay, we suggest that these cold-water intrusions—likely associated with internal waves—supply additional nutrients supporting higher growth rates at the southern site. Our findings indicate that once-daily water sampling may misrepresent the dynamic nutrient regimes experienced by fast-growing macroalgae, highlighting the need for high-frequency monitoring.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107338"},"PeriodicalIF":3.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581342","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":"Machine learning-based detection of changes in mapping the mangrove forest of the Yangon estuary, Southeast Asia","authors":"Phyu Phway Thant ,&nbsp;Zhijun Dai ,&nbsp;Xuefei Mei ,&nbsp;Binh An Nguyen ,&nbsp;Cong Mai Van ,&nbsp;Mee Mee Soe","doi":"10.1016/j.marenvres.2025.107343","DOIUrl":"10.1016/j.marenvres.2025.107343","url":null,"abstract":"<div><div>Mangrove forests are globally acknowledged for stabilizing coastlines, reducing wave energy, and protecting coastal habitats and adjacent land uses from extreme events. However, most regions experience alarming mangrove loss against natural and human disturbances. This study profiles dynamic changes in mangrove cover and shoreline migration along the Yangon estuary using Landsat imagery and machine learning approach from 1988 to 2023. Mangrove cover declined from 1175 ha in 1988 to 531 ha by 2011. It then increased to 5470 ha by 2023, resulting in a net gain of over 4000 ha. Concurrently, shoreline analysis using the mangrove vegetation line, indicates 92 % seaward progradation along the coastline. The western shoreline recorded mean accretion and erosion rates of +35.6 m/yr and −1.7 m/yr, while the eastern side showed more dynamic rates of +79.6 m/yr for accretion and −29.1 m/yr for erosion. Key findings highlight mangroves’ ability to keep pace with the relative SLR, aquaculture as the dominant driver of post-2008 mangrove loss, and underscore the roles of sedimentary variation and high sediment availability, extensive tidal flat existence, and coastal sheltering in supporting recent mangrove expansion. While further studies are needed, these insights offer a valuable foundation for future conservation and management efforts.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107343"},"PeriodicalIF":3.0,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581343","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":"Human-driven spatial and temporal contrasts in dissolved organic matter from submarine groundwater discharge and river runoff to Zhanjiang Bay, northern South China sea","authors":"Chao Wang ,&nbsp;Kuan Jiang ,&nbsp;Xin Wang ,&nbsp;Peng Huang ,&nbsp;Pengfei Liu ,&nbsp;Fajin Chen ,&nbsp;Guangzhe Jin","doi":"10.1016/j.marenvres.2025.107340","DOIUrl":"10.1016/j.marenvres.2025.107340","url":null,"abstract":"<div><div>Accurately estimating coastal carbon budgets requires a comprehensive understanding of dissolved organic matter (DOM) inputs from both groundwater discharge and river runoff, particularly in small, human-impacted tropical watersheds. This study provides a representative watershed surrounding Zhanjiang Bay in the northern South China Sea to broaden current knowledge in this field. By characterizing the spatiotemporal dynamics of water quality parameters, dissolved organic carbon (DOC), and both chromophoric and fluorescent DOM (CDOM and FDOM), we identified key patterns in DOM composition, sources, fluxes, and human-induced shifts. DOM in groundwater and river water around Zhanjiang Bay exhibited pronounced spatial heterogeneity but limited seasonal variation. Principal component and Cluster analyses identified three distinct groups. Cluster 1 represents shallow, oxygen-rich groundwater systems from cultivated land and artificial surfaces, with low DOM and microbially processed features. Cluster 2 comprises low-oxygen groundwater from grassland and wetland areas, marked by elevated DOC and humic-like FDOM, reflecting stronger terrestrial and anthropogenic inputs. Cluster 3 includes three rivers from urbanized catchments, enriched in DOC and protein-like FDOM from both anthropogenic and biological sources. Despite comparable water volumes, groundwater contributed less labile DOM flux than rivers. Riverine DOM showed a shift toward DOC-rich but CDOM-poor signature under human influence, deviating from natural tropical patterns and becoming similar to those of anthropogenically impacted rivers in northern China, indicating reduced stability and long-term carbon storage potential in marginal seas.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107340"},"PeriodicalIF":3.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562911","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":"PFAS-herbicide diflufenican reduces the photosynthetic capacity in seagrass (Zostera marina L.)","authors":"Viggo Klint Bastegaard,&nbsp;Kasper Elgetti Brodersen","doi":"10.1016/j.marenvres.2025.107342","DOIUrl":"10.1016/j.marenvres.2025.107342","url":null,"abstract":"<div><div>Global decline of seagrasses is directly linked with anthropogenic activities. One of the increasing threats, is marine pollution with a wide range of chemically synthesized substances. Here, we investigated effects of the commonly used PFAS-herbicide, diflufenican (DFF), on <em>Zostera marina</em> L. photobiology, over a 3-week exposure period, followed by 2-weeks of recovery. Measurements were conducted on seagrass leaves exposed to three different DFF concentrations (i.e., untreated, 0.015, 0.03 and 0.3 mg DFF L⁻¹). Photosynthesis and respiration rates, as a function of increasing photon scalar irradiance, were determined with the use of optical sensors measuring net gas exchange. Variable chlorophyll fluorescence imaging was used for determining the 2D photosynthetic capacity of the seagrass leaves. Photopigment concentrations in the seagrass leaves were quantified using HPLC-analysis. We show that DFF reduced the photosynthesis rates for plants exposed to 0.03 and 0.3 mg DFF L⁻¹ already after 1 week of exposure. While the imaging of photosynthetic capacity only showed a reduction for the highest DFF concentration (0.3 mg L⁻¹) after 3 weeks. Concentrations of chlorophyll <em>a</em>, chlorophyll <em>b</em> and <em>β</em>-carotene generally increased with exposure time for all treatments. Yet, no signs of recovery from exposure to high DFF concentrations were observed in the plants’ photosynthetic capacity after 2 weeks. These findings indicate that exposure to high concentrations of DFF reduces the photosynthetic performance and capacity of seagrass (<em>Z. marina</em> L.), which over time and combined with other environmental stressors may cause synergetic negative effects that are detrimental to seagrasses.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107342"},"PeriodicalIF":3.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581044","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":"Slow recovery in temperate mesophotic communities following disturbance: An example from Lough Hyne (Ireland)","authors":"Valerio Micaroni ,&nbsp;Rob McAllen ,&nbsp;Alberto Rovellini ,&nbsp;Francesca Strano ,&nbsp;Christine Morrow ,&nbsp;Bernard Picton ,&nbsp;John Turner ,&nbsp;Luke Harman ,&nbsp;James J. Bell","doi":"10.1016/j.marenvres.2025.107341","DOIUrl":"10.1016/j.marenvres.2025.107341","url":null,"abstract":"<div><div>Despite the ecological importance of temperate mesophotic ecosystems (TMEs), our understanding of the ecological processes within these systems and their potential to recover from disturbance remains limited. Here, we investigated the temporal dynamics of mesophotic sponge-dominated communities at Lough Hyne Marine Nature Reserve (Ireland) following a significant sponge mortality event in the early 2010s. Through the analysis of permanent quadrat data from 1994 to 1995 (pre-disturbance) and 2018–2021 (post-disturbance), we quantified the temporal variation in recovery rates of benthic communities and sponge populations across an environmental gradient. Although communities changed as a result of the disturbance, multivariate analyses did not detect any temporal changes in communities or sponge assemblages in the periods preceding or immediately after the disturbance. However, we did find a small increase in the abundance of some habitat-forming sponges and anemones at some sites, suggesting that a slow recovery may be underway. In contrast, other sites showed no signs of recovery. The heterogeneity of temporal dynamics and recovery trajectories among sites highlights the potential influence of environmental conditions on recovery. At current rates, some sponge populations may take decades to recover assuming there is no further disturbance. In general, we found that sponges and cnidarians showed very small temporal fluctuations both before and after the disturbance, suggesting high temporal constancy of these organisms in TMEs. These small temporal fluctuations likely derive from the slow growth, long lifespan, and low fecundity of many temperate mesophotic sponges and cnidarians. These results provide rare empirical evidence for long recovery times (several to many decades) of TME benthic communities following disturbance, as little recovery was observed at Lough Hyne after at least six years following the mortality events. As many TMEs worldwide remain largely unprotected, urgent global action is needed to conserve these ecosystems since any human impact may have long-lasting effects on TME biodiversity and ecosystem services.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107341"},"PeriodicalIF":3.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144550033","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":"Evaluating the potential impacts of mesoscale eddies on the distribution and abundance of an environmentally sensitive squid species (Sthenoteuthis oualaniensis) in the Arabian Sea","authors":"Yingyue Fu ,&nbsp;Xiaoci Wu ,&nbsp;Pengchao Jin ,&nbsp;Xinjun Chen ,&nbsp;Qinwang Xing ,&nbsp;Fei Chai ,&nbsp;Jie Cao ,&nbsp;Wei Yu","doi":"10.1016/j.marenvres.2025.107337","DOIUrl":"10.1016/j.marenvres.2025.107337","url":null,"abstract":"<div><div>The purpleback flying squid (<em>Sthenoteuthis oualaniensis</em>) is widely distributed in the Arabian Sea and highly sensitive to environmental changes. Mesoscale eddies largely occur in the Arabian Sea, playing a significant role in regional biogeochemical processes. However, the impact of eddies on squid abundance is not well studied. Therefore, mesoscale eddies impacts on abundance and spatial distribution of <em>S</em>. <em>oualaniensis</em> were investigated in this study. The results indicated that the monthly catch-per-unit-effort (CPUE) of <em>S. oualaniensis</em> correlated with the variation in the number of eddies, and CPUE within cyclonic eddies (CE) was higher than that within anticyclonic eddies (AE). Sea surface temperature (SST), chlorophyll-<em>a</em> concentration (Chl-<em>a</em>), and dissolved oxygen at 150 m (DO150m) strongly affected the abundance of <em>S. oualaniensis</em>, showing distinct spatial distributions within CEs and AEs. These three key environmental factors were used to construct a habitat suitability index (HSI) model to evaluate the habitat distribution characteristics of <em>S. oualaniensis</em> within CEs and AEs, and results demonstrated CEs were more suitable. Within CEs, suitable SST and relatively lower DO150m aid in the growth and predator avoidance of <em>S. oualaniensis</em>. Overall, the eddies in the Arabian Sea regulate the abundance and distribution of <em>S. oualaniensis</em>, with CEs providing a more suitable habitat.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107337"},"PeriodicalIF":3.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144562909","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":"Numerical study on long-term pollutant transport in northern part of Liaodong Bay","authors":"Xiaoyu Wang ,&nbsp;Jun Tang ,&nbsp;Yongming Shen","doi":"10.1016/j.marenvres.2025.107335","DOIUrl":"10.1016/j.marenvres.2025.107335","url":null,"abstract":"<div><div>This study employs the ECOMSED model to investigate the long-term pollutant transport mechanisms in the northern part of Liaodong Bay under the combined effects of wind, runoff and tides. Key findings reveal that runoff dominates initial transport near estuaries, while wind and the tidal reciprocation critically govern offshore diffusion pathways. Pollutants exhibit oscillatory dispersion patterns influenced by seasonal variations in runoff and wind, ultimately accumulating in the Liao River Estuary and the central-western bay. The Daliao River Estuary exhibits stronger self-purification capacity compare to the Liao River Estuary. The overall weaker environmental self-purification capacity in the northern part of Liaodong Bay hinders long-term pollutant export to the outer sea. These insights provide a scientific basis for managing land-based pollution in semi-enclosed coastal system.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"210 ","pages":"Article 107335"},"PeriodicalIF":3.0,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518566","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}