Marine pollution bulletin最新文献_第7页

Vegetated habitats as natural macrolitter traps in an Apulian site along the Southeastern Adriatic Coast: Insights from the Ericaria crinita macroalgal canopy 在亚得里亚海东南海岸的阿普利亚地区，作为天然大凋落物陷阱的植被栖息地：来自埃里卡（Ericaria criinita）大藻冠层的见解

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-28 DOI: 10.1016/j.marpolbul.2026.119336

Lucia Rizzo , Andrea Picciolo , Simonetta Fraschetti

{"title":"Vegetated habitats as natural macrolitter traps in an Apulian site along the Southeastern Adriatic Coast: Insights from the Ericaria crinita macroalgal canopy","authors":"Lucia Rizzo , Andrea Picciolo , Simonetta Fraschetti","doi":"10.1016/j.marpolbul.2026.119336","DOIUrl":"10.1016/j.marpolbul.2026.119336","url":null,"abstract":"<div><div>Marine algal forests are highly productive and biodiverse ecosystems yet increasingly threatened by habitat loss and fragmentation. To mitigate these pressures, identifying the drivers of macroalgal canopy decline is essential. This study examines seasonal variations in abundance and size structure of <em>Ericaria crinita</em> (Phaeophyta) and assesses its role in retaining marine litter. Along the Apulian coastline (Italy, Adriatic Sea), litter abundance and composition were analyzed across four habitats: vegetated low-shore rocky habitats with and without macroalgal canopies, and vegetated and unvegetated emerged beaches. <em>E. crinita</em> abundance remained stable across seasons, while size structure showed significant seasonal variation, with spring as the main growth period and summer as a dormancy phase. The vegetated beach exhibited the highest litter abundance (9.54 ± 0.59 items m<sup>−2</sup>), mainly originating from land-based sources, whereas the rocky shore without canopy was the least affected habitat. Sea-based litter was significantly more abundant in the rocky shore with canopy and the vegetated beach (2.62 ± 0.32 and 2.50 ± 0.37 items m<sup>−2</sup>, respectively), compared with the unvegetated beach (0.46 ± 0.14 items m<sup>−2</sup>) and the rocky shore without canopy (0.17 ± 0.08 items m<sup>−2</sup>). Recreational land-based activities are the primary source of litter on the beach, while fishing activities mainly impact macroalgal canopies. Dense canopies enhance the retention of larger litter items, as indicated by the positive correlation between large-size litter items and thallus length. The findings highlight the pervasive presence of marine litter and the need for targeted management strategies to mitigate its impacts on macroalgal forests.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"226 ","pages":"Article 119336"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072627","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}

引用次数: 0

Automated non-target screening workflow for source tracking of organic contaminants in industrialized coastal sediments 工业化沿海沉积物中有机污染物来源跟踪的自动化非目标筛选工作流程

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-28 DOI: 10.1016/j.marpolbul.2026.119333

Mangong Shin , Sori Mok , Seongjin Hong , Hoon Choi , Moonjin Lee , Hyo-Bang Moon

{"title":"Automated non-target screening workflow for source tracking of organic contaminants in industrialized coastal sediments","authors":"Mangong Shin , Sori Mok , Seongjin Hong , Hoon Choi , Moonjin Lee , Hyo-Bang Moon","doi":"10.1016/j.marpolbul.2026.119333","DOIUrl":"10.1016/j.marpolbul.2026.119333","url":null,"abstract":"<div><div>This study describes the development of an automated workflow for non-target screening data processing and applies multivariate statistical analysis to characterize chemical fingerprints in sediment from industrialized coastal regions. R-based software facilitates streamlined processing of gas chromatography coupled with time-of-flight mass spectrometer datasets through retention index-based filtering, feature consolidation, and blank subtraction, enhancing data reliability and minimizing manual workloads. The workflow is applied to sediment from industrialized bays, and partial least squares discriminant analysis is used to distinguish site-specific chemical fingerprints. Tentatively identified compounds are linked to specific industrial activities, including petrochemical manufacturing, fossil-fuel combustion, waste incineration, and shipbuilding. Model performance and compound relevance are validated through cross-validation and permutation testing, confirming the robustness of the workflow. This integrated approach provides a scalable and reproducible tool for the tracking of chemical sources and environmental monitoring, highlighting the utility of combining non-target screening workflow with statistical analysis in sediment studies.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"226 ","pages":"Article 119333"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072630","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}

引用次数: 0

Aquaculture linked marine plastic pollution in the fjords and channels of Los Lagos and Aysén regions, Chile 水产养殖与智利洛斯拉各斯和ayssamin地区峡湾和航道的海洋塑料污染有关

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-28 DOI: 10.1016/j.marpolbul.2026.119269

Carolina Aguirre-Muñoz , Bryan Bularz , Pablo Reche García , María Angélica Alarcón , Iván A. Hinojosa , Shari L. Gallop , Michael Mucalo , Tanya O'Neill , Joanne I. Ellis

{"title":"Aquaculture linked marine plastic pollution in the fjords and channels of Los Lagos and Aysén regions, Chile","authors":"Carolina Aguirre-Muñoz , Bryan Bularz , Pablo Reche García , María Angélica Alarcón , Iván A. Hinojosa , Shari L. Gallop , Michael Mucalo , Tanya O'Neill , Joanne I. Ellis","doi":"10.1016/j.marpolbul.2026.119269","DOIUrl":"10.1016/j.marpolbul.2026.119269","url":null,"abstract":"<div><div>The rapid expansion of aquaculture in fjords and channels has raised concerns about the accumulation of marine plastic pollution. These environments are particularly vulnerable to plastic accumulation. This study assessed the composition, distribution, and abundance of aquaculture-derived plastics in fjords, archipelagos, and channels of the Los Lagos and Aysén regions in Chile. Vessel-based photographic surveys across 136 observation sites (≈718 km of coastline) recorded 918 large plastic items, mainly aquaculture buoys and floating structures, concentrated in 32 coastal sectors. Most marine plastic pollution (89%) was observed in Los Lagos, where <em>in situ</em> observations were located near aquaculture centres (within a 1 km radius), whereas this spatial association was not observed in Aysén. Hydrodynamic modelling was used to identify potential accumulation zones of marine plastic pollution. A positive but non-significant relationship was found between modelled accumulation probability and observed plastic densities; however, spatial accumulation patterns were broadly consistent across datasets. These results highlight both the challenges of predicting marine plastic pollution in complex fjord systems and the value of integrating field observations with modelling as a complementary approach for monitoring and managing aquaculture-related plastic pollution.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"226 ","pages":"Article 119269"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072660","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}

引用次数: 0

Hydrodynamic control on the interannual variability of algal bloom in the Pearl River Estuary from 2021 to 2024: evidences from buoy data and hydrodynamic modeling 珠江口2021 - 2024年藻华年际变化的水动力控制：来自浮标数据和水动力模拟的证据

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-28 DOI: 10.1016/j.marpolbul.2026.119320

Heng Zhang , Zijian Zhang , Xinfeng Zhao , Hong Yang , Tong Li , Zhen Shi , Kaikai Hu , Guang Zhang

{"title":"Hydrodynamic control on the interannual variability of algal bloom in the Pearl River Estuary from 2021 to 2024: evidences from buoy data and hydrodynamic modeling","authors":"Heng Zhang , Zijian Zhang , Xinfeng Zhao , Hong Yang , Tong Li , Zhen Shi , Kaikai Hu , Guang Zhang","doi":"10.1016/j.marpolbul.2026.119320","DOIUrl":"10.1016/j.marpolbul.2026.119320","url":null,"abstract":"<div><div>Algal blooms have increased in frequency in the Pearl River Estuary (PRE) due to intensive human activities. While seasonal effects of hydrodynamics and water quality on blooms are well-known, influences at intramonthly and interannual timescales remain unclear due to limited high-frequency long-term observations. Using daily buoy data and a coastal ocean model, this study investigates hydrodynamic controls on interannual bloom variability.</div><div>Results showed 55 bloom events (Chl-a > 10 μg/L) occurred between 2021 and 2024, with 35 events occurred in the dry season (October–April) when residence time (RT) was long and nutrients were low. Most blooms formed along salinity fronts, where convergence accumulates nutrients and biomass. The strongest event (Chl-a > 35 μg/L) occurred in December 2024. Interannual variability in dry season blooms was regulated by wind: winter storms in 2022 and 2023 enhanced offshore flushing, shortening RT and suppressing blooms, whereas stronger easterlies in 2021 and 2024 increased onshore Ekman transport, extending RT and favor blooms. The December 2024 bloom was particularly intense due to weaker winds and a more stable water column compared with 2021. RT primarily controlled blooms in the western PRE, while vertical stability was more important in the eastern PRE.</div><div>These findings emphasize the combined roles of RT, vertical stability, and frontal intensity in regulating blooms, suggesting they may serve as key indicators for bloom forecasting in the PRE.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"226 ","pages":"Article 119320"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146071638","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}

引用次数: 0

Evaluating the effectiveness of adsorption nano-techniques for microplastic removal: Insights and future prospects 评价纳米吸附技术去除微塑料的有效性：见解和未来展望

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-05-01 Epub Date: 2026-01-26 DOI: 10.1016/j.marpolbul.2026.119233

Mohammad Hossein Sayadi , Mohsen Nowrouzi , Nastran Eslami , Sara Emami , Ali Mehdinia

{"title":"Evaluating the effectiveness of adsorption nano-techniques for microplastic removal: Insights and future prospects","authors":"Mohammad Hossein Sayadi , Mohsen Nowrouzi , Nastran Eslami , Sara Emami , Ali Mehdinia","doi":"10.1016/j.marpolbul.2026.119233","DOIUrl":"10.1016/j.marpolbul.2026.119233","url":null,"abstract":"<div><div>The widespread presence of microplastics in aquatic ecosystems has raised significant environmental concerns, with implications for both wildlife and human health. This review evaluates the effectiveness of various adsorbent materials for removing microplastics and nanoplastics from water sources. It focuses on adsorbents such as activated carbon, bioadsorbents, and advanced nanomaterials, exploring their adsorption capacities, efficiency, and surface properties. Key factors, such as pore size, surface charge, and environmental parameters (temperature, pH), that affect removal efficiency are examined. The mechanisms underlying adsorption, including electrostatic interactions, hydrogen bonding, and hydrophobic forces, are discussed in detail. Additionally, the review addresses the challenges related to adsorbent regenerability and scalability for large-scale applications. Although various adsorbents show promise, future research must prioritize improving the sustainability and efficiency of these materials while minimizing environmental risks associated with their use. The development of biodegradable and cost-effective adsorbents will be crucial for addressing the growing issue of microplastic contamination in water.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"226 ","pages":"Article 119233"},"PeriodicalIF":4.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146043305","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}

引用次数: 0

Nanoplastic exposure damages neural plasticity, cognitive abilities, and ecological adaptability of marine medaka Oryzias melastigma 纳米塑料暴露会损害海洋米甲的神经可塑性、认知能力和生态适应性。

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-04-01 Epub Date: 2026-01-07 DOI: 10.1016/j.marpolbul.2026.119232

Xianyu Yuan , Guihui Ning , Yong Liu , Sunil Kadri , Jiezhang Mo , Zhen Wang , Ping Li , Zonghang Zhang

{"title":"Nanoplastic exposure damages neural plasticity, cognitive abilities, and ecological adaptability of marine medaka Oryzias melastigma","authors":"Xianyu Yuan , Guihui Ning , Yong Liu , Sunil Kadri , Jiezhang Mo , Zhen Wang , Ping Li , Zonghang Zhang","doi":"10.1016/j.marpolbul.2026.119232","DOIUrl":"10.1016/j.marpolbul.2026.119232","url":null,"abstract":"<div><div>Nanoplastics are widely distributed in diverse aquatic environments and pose potential threats to organisms. Despite the growing awareness of nanoplastics' toxicity, their effects on higher-order cognitive functions and ecological adaptability of fish remain poorly understood. This study investigated the effects of 50 nm polystyrene nanoplastics on the cognition and adaptability of marine medaka (<em>Oryzias melastigma</em>) and further explored potential molecular mechanisms through transcriptomic analyses. Exposed fish showed a pattern of faster decision-making but lower accuracy in spatial and numerical learning tasks, indicating reduced cognitive abilities. Exposed fish displayed closer inter-individual distances, increased avoidance distances, and more substantial reliance on shelters in mesocosm systems. Transcriptomic analysis also revealed altered expression of genes involved in cell adhesion, signal transduction, and oxidative stress, especially in focal adhesion and tight junction pathways. This study provides additional neurobehavioral toxicological evidence of nanoplastics and highlights the importance of including nanoplastics in the current plastic management strategies.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119232"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145934034","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}

引用次数: 0

Barnacles as silent sentinels of microplastic pollution: Evidence from Gujarat coast, India and a global meta-analysis of sessile marine species 藤壶是微塑料污染的无声哨兵：来自印度古吉拉特邦海岸的证据和一项对固定性海洋物种的全球荟萃分析。

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-04-01 Epub Date: 2026-01-07 DOI: 10.1016/j.marpolbul.2026.119220

Mahima Doshi , Krupal Patel , Jigneshkumar Trivedi

{"title":"Barnacles as silent sentinels of microplastic pollution: Evidence from Gujarat coast, India and a global meta-analysis of sessile marine species","authors":"Mahima Doshi , Krupal Patel , Jigneshkumar Trivedi","doi":"10.1016/j.marpolbul.2026.119220","DOIUrl":"10.1016/j.marpolbul.2026.119220","url":null,"abstract":"<div><div>Microplastics (MPs) are persistent marine pollutants that accumulate in aquatic life and harm ecosystems. This research investigates the suitability of barnacle species as bioindicators of microplastic pollution along coastal regions of Gujarat state, India. Specimens of 8 barnacle species were collected from 13 different sampling sites of Gujarat state, along with sediment and water samples. A total of 484, 491 and 725 MPs were extracted from barnacle, water, and sediment, respectively, with the highest abundance recorded at Shivrajpur. MPs pollution was observed highest in <em>Chthamalus barnesi</em> while lowest in <em>Megabalanus tintinnabulum</em>. MPs abundance varied significantly between study sites and species of barnacles. Fibers was found predominantly with blue, and 1–2 mm sized MPs pollution showed in all metrices. ATR-FTIR identified 7 polymers, mainly polypropylene and polyethylene. Pollution indices revealed severe microplastic pollution at multiple coastal sites. In the global meta-analysis, a total of 80 articles related to MP pollution in sessile organisms published from 2013 to 2024 were used. In different sessile organisms, the sponge <em>Crella affinis</em> showed highest pollution, while the bivalve <em>Mytilus galloprovincialis</em> showed lowest pollution. Fiber was the most dominant shape, with 0.5–1 mm sizes and blue, red, and black colours, with polyethylene (PE) as the most common polymer. The MP abundance in barnacles, water and sediment varied according to the anthropogenic activities being carried out at different study sites. Therefore, barnacles serve as excellent bioindicators of microplastic pollution in the coastal areas of Gujarat state, India.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119220"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145933870","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}

引用次数: 0

Biodegradation and disintegration of expanded polystyrene by sphaeromatid isopods Sphaeroma via their gut bacteria 等足球形球虫通过肠道细菌降解和分解膨胀聚苯乙烯。

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-04-01 Epub Date: 2026-01-07 DOI: 10.1016/j.marpolbul.2025.119207

Sufang Zhao , Haiming Xu , Renju Liu , Jiannan Wang , Bin Zhi , Xiaoteng Fu , Xiaxing Cao , Xingyi Ma , Zongze Shao

{"title":"Biodegradation and disintegration of expanded polystyrene by sphaeromatid isopods Sphaeroma via their gut bacteria","authors":"Sufang Zhao , Haiming Xu , Renju Liu , Jiannan Wang , Bin Zhi , Xiaoteng Fu , Xiaxing Cao , Xingyi Ma , Zongze Shao","doi":"10.1016/j.marpolbul.2025.119207","DOIUrl":"10.1016/j.marpolbul.2025.119207","url":null,"abstract":"<div><div>Wood-boring isopods have been documented inhabiting the plastic floats of expanded polystyrene (EPS), which is extensively utilized in mariculture as buoyant material. However, little is known about their role in the plastic fragmentation and degradation. This report confirmed that globally distributed <em>Sphaeroma</em> gnawed and ingested EPS foam, and digested it via their gut microbiome. After 7 days of exposure, each <em>Sphaeroma</em> consumed 4.4 ± 0.2 mg EPS, ingested 50 microbeads and egested 2.5 ± 0.7 × 10<sup>3</sup> microplastics. Analyses using μFTIR, GPC, and GC–MS revealed polystyrene (PS) degradation in the gut of <em>Sphaeroma</em>. High throughput 16S rRNA sequencing revealed that <em>Exiguobacterium</em> spp. and <em>Brevibacterium</em> spp. were associated with PS diets in the gut microbiome of <em>Sphaeroma</em>, suggesting their potential key role in vivo. Further characterizations of PS weight loss, changes in chemical and thermal properties, and identification of metabolic intermediates confirmed that PS can be degraded by five gut bacteria from the above two genera. Antibiotic bioassay confirmed that gut microbes are essential for the EPS depolymerization in <em>Sphaeroma</em> by. All these results demonstrate that the gut microbiome contributes to EPS digestion in the host. Together, these results found marine isopods in coastal negatively influenced the environmental fats of the plastic fate, by fragmenting plastics and generating microplastics, via their PS-degrading gut microbiota.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119207"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145933928","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}

引用次数: 0

Engineered Vibrio natriegens as a living biocatalyst for in-situ biodegradation of microplastics in seawater 工程营养型弧菌在海水微塑料原位生物降解中的应用。

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-04-01 Epub Date: 2026-01-08 DOI: 10.1016/j.marpolbul.2025.119177

Gyu-Jin Lee, Hanjoo Jo, Hyuk Taek Kwon, Sung In Lim

{"title":"Engineered Vibrio natriegens as a living biocatalyst for in-situ biodegradation of microplastics in seawater","authors":"Gyu-Jin Lee, Hanjoo Jo, Hyuk Taek Kwon, Sung In Lim","doi":"10.1016/j.marpolbul.2025.119177","DOIUrl":"10.1016/j.marpolbul.2025.119177","url":null,"abstract":"<div><div>Marine microplastic pollution, particularly from polyethylene terephthalate (PET), presents urgent ecological challenges. Although polyethylene terephthalate hydrolase (PETase) offers a promising avenue, its implementation in saline environments remains limited by host incompatibility and enzyme instability. Here, we present a halophilic whole-cell system that integrates PETase into the fast-growing marine bacterium <em>Vibrio natriegens</em> (Vn). To enhance catalytic robustness and substrate accessibility, we engineered Vn to display PETase on its outer membrane, generating a promising living biocatalyst (Vn-PETase). Under simulated marine conditions (3.5 % NaCl at 30 °C), Vn-PETase demonstrated significantly faster growth (μ = 0.420 h<sup>−1</sup>) and higher hydrolytic activity (96.6 % conversion of a model substrate within 6 h) compared with <em>E. coli</em>-based counterparts (μ = 0.018 h<sup>−1</sup> and 39.3 % conversion). Building upon this platform, we developed Vn-FastPETase, which displays an engineered PETase variant with enhanced catalytic performance, resulting in markedly improved PET hydrolysis. Vn-FastPETase achieved efficient <em>in-situ</em> depolymerization of PET micro- and nano-particles to mono-(2-hydroxyethyl) terephthalate (MHET) and terephthalic acid (TPA) during cultivation in artificial seawater. This study establishes Vn as a marine-compatible host for <em>in-situ</em> PET biodegradation and demonstrates a proof-of-concept strategy toward developing living biocatalysts for mitigating plastic pollution in ocean environments.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119177"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145944183","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}

引用次数: 0

Ellobiid snail loss in seawall-fronted mangroves 海堤前红树林中扁形蜗牛的损失

IF 4.9 3区环境科学与生态学

Marine pollution bulletin Pub Date : 2026-04-01 Epub Date: 2026-01-12 DOI: 10.1016/j.marpolbul.2026.119260

Yijuan Deng , Lin Zhang , Wenqing Wang , Longlong Du , Mao Wang

{"title":"Ellobiid snail loss in seawall-fronted mangroves","authors":"Yijuan Deng , Lin Zhang , Wenqing Wang , Longlong Du , Mao Wang","doi":"10.1016/j.marpolbul.2026.119260","DOIUrl":"10.1016/j.marpolbul.2026.119260","url":null,"abstract":"<div><div>Seawalls are widely constructed to protect coastal communities and infrastructure against storm surges and tidal flooding; however, they often exert significant ecological pressure on adjacent wetland ecosystems. Understanding these impacts is critical for sustainable coastal management, particularly in the context of intensifying coastal squeeze. In this study, we investigated the effects of seawall construction on benthic mollusk communities within subtropical mangrove wetlands by comparing assemblages in mangroves fronting seawalls with those in adjacent, undisturbed natural mangroves. The results showed that species richness at the plot scale did not differ significantly between the two habitats (<em>p</em> > 0.05), highlighting the potential limitations of relying solely on species counts for ecological assessment. Conversely, Shannon and Simpson diversity indices were significantly higher in natural mangroves. Notably, two common species of Ellobiidae were entirely absent from seawall-fronted sites despite their consistent presence in the natural reference habitats. These findings suggest that ellobiid snails may serve as effective indicator species for evaluating the ecological footprint of seawall construction. Broadly, our results underscore the necessity of incorporating multi-dimensional diversity metrics, particularly those capturing abundance distributions, alongside indicator taxa to ensure robust biodiversity assessments.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"225 ","pages":"Article 119260"},"PeriodicalIF":4.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145956512","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}

引用次数: 0