Marine pollution bulletin最新文献

{"title":"Genomic evidence reveals temperature-associated ecotypic divergence of Phaeocystis globosa in Chinese coastal waters","authors":"Mengqi Dong ,&nbsp;Yue Xue ,&nbsp;Haiping Li ,&nbsp;Dayong Liang ,&nbsp;Tao Yang ,&nbsp;Yanying Zhang ,&nbsp;Pingping Shen","doi":"10.1016/j.marpolbul.2025.118781","DOIUrl":"10.1016/j.marpolbul.2025.118781","url":null,"abstract":"<div><div><em>Phaeocystis globosa</em>, a cosmopolitan species notorious for triggering harmful algal blooms (HABs), displays substantial genetic variation across geographically isolated populations. This study analyzed the morphological and genetic characteristics of four <em>P. globosa</em> strains isolated from distinct coastal regions of China, encompassing the Beibu Gulf - Guangxi (strain BB172), Mirs Bay - Shenzhen (strain SZ211), Wuyuan Gulf - Xiamen (strain XM-1), and Tangdao Bay - South Yellow Sea near Qingdao (strain SYS01). These strains share similar morphological characteristics and cannot be reliably distinguished based on morphology. Phylogenetic analysis based on multiple molecular markers including nuclear 18S rDNA, 28S rDNA D1-D2 regions, mitochondrial <em>COX1</em>, and chloroplast <em>pgcp1</em> sequences demonstrated a high level of genetic diversity (comprising over 156 sequences) of <em>P. globosa</em> populations. Phylogenetic population structure analysis delineated two evolutionarily distinct ecotypes: warm-adapted (Beibu Gulf and Mirs Bay strains) and cold-adapted lineages (Tangdao Bay and Wuyuan Gulf strains). Notably, southern populations were represented in both ecotypes and exhibited higher genetic diversity (South vs. North sequences: 69:27), suggesting a possible speciation hotspot. In contrast, northern strains were restricted to the cold-adapted clade and showed reduced variation, consistent with an origin from recent colonization or environmental filtering by a limited number of founders, followed by rapid local adaptation to colder temperatures. The clear temperature-associated genomic partitioning underscores the role of thermal adaptation in driving ecotypic diversification. These findings provide a genomic framework for understanding the biogeography and bloom dynamics of <em>P. globosa</em> across China's coastal temperature gradients, with implications for predicting HABs responses to climate change.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118781"},"PeriodicalIF":4.9,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220022","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":"Coupled polyphosphate storage and DOP mobilization along estuarine gradients in the Pearl River Estuary","authors":"Xian-Yang Zhang ,&nbsp;Feng-Xian Han ,&nbsp;Jian-Ting Li ,&nbsp;Jia-Xue Wu ,&nbsp;Song-Hui Lu ,&nbsp;Lin-Jian Ou","doi":"10.1016/j.marpolbul.2025.118798","DOIUrl":"10.1016/j.marpolbul.2025.118798","url":null,"abstract":"<div><div>River-dominated estuaries increasingly experience phosphorus (P) stress as dissolved inorganic nitrogen rises, elevating the role of dissolved organic P (DOP) in sustaining productivity. We surveyed 23 surface stations across the Pearl River Estuary (PRE) and quantified dissolved and particulate P pools, the enzyme-hydrolyzable share of soluble non-reactive P (SNP; a proxy for bioavailable DOP), size-fractionated extracellular phosphomonoesterase (PMEA) and phosphodiesterase (PDEA) activities, and particulate polyphosphate (polyP). Soluble reactive phosphorus (SRP) declined seaward, whereas SNP dominated offshore; 17.9–92.7 % of SNP was enzyme-hydrolyzable. PMEA and PDEA were concentrated in the 2–200 μm fraction, implicating phytoplankton and particle-attached bacteria. Particulate polyP was abundant and covaried positively with phosphatase activities across stations. A principal-component analysis separated a river-influenced regime (higher SRP, particulate organic P, and diester-hydrolyzable DOP) from a phytoplankton-dominated regime (higher chlorophyll <em>a</em>, polyP, and phosphatase activities). These patterns are consistent with a co-occurring microbial strategy: luxury polyP storage during nutrient pulses coupled with phosphatase-mediated DOP mobilization when SRP is scarce at micro-scales, in particle-rich microhabitats. Management implications include reducing particulate and bioavailable organic P alongside inorganic P to weaken this storage–mobilization coupling in turbid waters.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118798"},"PeriodicalIF":4.9,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213200","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":"Noisy waters affect feeding and metabolic enzyme activities of amphipod mesograzers","authors":"Sheng V. Wang ,&nbsp;Anna Terschek ,&nbsp;Nelly Tremblay ,&nbsp;Maarten Boersma ,&nbsp;Alexa Wrede ,&nbsp;Jan Beermann","doi":"10.1016/j.marpolbul.2025.118764","DOIUrl":"10.1016/j.marpolbul.2025.118764","url":null,"abstract":"<div><div>The consequences of the progressive intrusion of anthropogenic noise into natural oceanic soundscapes are largely unknown despite the fact that most metazoans utilize sound or vibration for intra- and interspecific interactions as well as orientation. Coastal ecosystems in particular can be characterized by a high level of human activity and thus anthropogenic noise sources. Here, we studied the impact of such noise on marine mesograzers, small invertebrates that play crucial ecological roles by controlling macrophyte growth while serving as key food sources for higher trophic levels in algae-dominated coastal ecosystems. The effect of added continuous low-frequency noise on the habitat choice, feeding rate, and metabolic enzyme activities of the amphipod mesograzer <em>Marinogammarus marinus</em> was tested in a controlled laboratory setting. While habitat choice appeared unaffected by the added noise, exposed animals exhibited reduced feeding performance as well as altered metabolic enzyme activities. If sustained, the physiological homeostasis of <em>M. marinus</em> and their role in the ecosystem may be jeopardized. The ever-rising sound levels in the oceans may thus have consequences for algae-dominated animal communities in coastal areas.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118764"},"PeriodicalIF":4.9,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145220025","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":"Physiological response of Ammonia confertitesta (phylotype T6) to oil-amended sediments: Evidence from confocal microscopy","authors":"Caterina Ciacci ,&nbsp;Michael Martínez-Colón ,&nbsp;Benjamin Ross ,&nbsp;Michele Betti ,&nbsp;Federica Rebecchi ,&nbsp;Matthew P. Quinan ,&nbsp;Jordon S. Beckler ,&nbsp;Vincent M.P. Bouchet ,&nbsp;Fabrizio Frontalini","doi":"10.1016/j.marpolbul.2025.118768","DOIUrl":"10.1016/j.marpolbul.2025.118768","url":null,"abstract":"<div><div>The physiological changes in the intertidal benthic foraminiferal species <em>Ammonia confertitesta</em> were described using the mean fluorescence intensity (i.e., Nile Red, Acridine Orange and Cell-ROX fluorogenic probes) under confocal microscopy, after exposure to oil-spiked (Macondo crude oil) sediments at three different concentrations (0, 0.044, and 0.44 g/cm³) and three time points (24, 48, and 72 h). The physiological changes are associated with an intracellular accumulation of neutral lipids (i.e., lipid droplets), a proliferation of acid vesicles (i.e., lysosomes), and enhanced production of reactive oxygen species (ROS) (i.e., oxidative stress). Statistically significant differences (Kruskal-Wallis H and Mann Whitney U; <em>p</em> &lt; 0.001) are observed between concentrations, with the highest production of lipid droplets and ROS occurring at 0.44 g/cm³ across the time points. However, the highest lysosome production occurs at 0.044 g/cm³. The increased number of lipid droplets and lysosomes are a detoxifying strategy where oil may be sequestered and biologically inactivated via hydrolytic enzymes, that are responsible for digesting biomolecules. However, the free radical production, as evidenced by increased ROS mean fluorescence intensity, most likely leads to cellular damage. Overall, the observed physiological alterations observed support how effective and reliable benthic foraminifera are as proxies of environmental stress.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118768"},"PeriodicalIF":4.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213258","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":"Baseline levels of natural radioactivity in the bottom sediments of the East Siberian and Laptev Seas and assessment of the associated risks","authors":"Alexander Ulyantsev ,&nbsp;Svetlana Bratskaya ,&nbsp;Sergei Ivannikov ,&nbsp;Alexander Charkin","doi":"10.1016/j.marpolbul.2025.118770","DOIUrl":"10.1016/j.marpolbul.2025.118770","url":null,"abstract":"<div><div>The paper summarises the results of gamma-spectrometric determination of the activity concentration of the major natural radionuclides (²²⁶Ra, ²³²Th, and ⁴⁰K) in the surface bottom sediments (84 samples) and a single sample of ferromanganese nodules collected in the East Siberian Sea and the Laptev Sea in 2008–2020. Radium equivalent activity, external and internal hazard, and gamma activity concentration indices were calculated in order to assess the natural pollution and risk level of radionuclides. Activity concentrations ranged 16.5–70.4 (mean 31.0) Bq kg⁻¹ of ²²⁶Ra, 21.4–77.9 (mean 40.2) Bq kg⁻¹ of ²³²Th, and 298–991 (mean 543) Bq kg⁻¹ of ⁴⁰K for the East Siberian Sea samples. The Laptev Sea samples exhibited ranges 15.5–54.0 (mean 32.9) Bq kg⁻¹ of ²²⁶Ra, 23.1–66.4 (mean 41.8) Bq kg⁻¹ of ²³²Th, and 328–546 (mean 441) Bq kg⁻¹ of ⁴⁰K. In the case of the ferromanganese nodule sample, the measured activity concentrations were 262 ± 42 Bq kg⁻¹ of ²²⁶Ra, 137 ± 35 Bq kg⁻¹ of ²³²Th, and 323 ± 45 Bq kg⁻¹ of ⁴⁰K. The activity concentrations of natural radionuclides in the sediments were found to be in close proximity to the global average. Activity concentrations of ²²⁶Ra and ²³²Th in ferromanganese nodules were 8 and 3 times higher, respectively. The subsequent radiological risk assessment indicated that the observed values for the sediments were below the specified threshold values. The values for the ferromanganese nodule sample exceeded these thresholds indicating a potential radiological hazard associated with mining of such deposits.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118770"},"PeriodicalIF":4.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213207","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":"Assessing the air pollution co-impacts of hybridizing coastal ferry powertrains on ports and coastal communities","authors":"Navid Balazadeh Meresht,&nbsp;Mohammadreza Paydari,&nbsp;Hossein Shahbazi,&nbsp;Seyed Reza Safavi,&nbsp;Gordon McTaggart-Cowan,&nbsp;Vahid Hosseini","doi":"10.1016/j.marpolbul.2025.118752","DOIUrl":"10.1016/j.marpolbul.2025.118752","url":null,"abstract":"<div><div>Diesel-electric large passenger ferries play a crucial role in connecting coastal communities. Their current diesel-electric powertrain configuration makes them prime candidates for hybridization, providing a cost-effective and accessible route to decarbonization. While reductions in fuel consumption and CO₂ emissions are well-established benefits of hybrid systems, the primary aim of this study is to quantify and evaluate the associated air pollution co-benefits, particularly in and around ferry terminals where population exposure is high and nearby coastal communities are most affected. The study assesses the impact of emissions from British Columbia (BC) Ferry Corporation's Coastal class ferries, equipped with baseline diesel-electric powertrains, and when operating with plug-in hybrid propulsion systems, on local air quality in Tsawwassen Port, BC, Canada. A GT-SUITE™ engine model was developed for the marine diesel engines used in Coastal class ferries to estimate fuel consumption and nitrogen oxide (NOx) emissions. Using ferry traffic data and emission factors for cruising, maneuvering, and berth modes, annual NOx emissions were calculated through a fleet activity-based method. Calculated NOx, local meteorology, and coastal land use data were utilized in the AERMOD model. The model evaluated pollutant concentrations, assessed concentration in both marine and residential zones, and quantified the air quality benefits associated with hybrid powertrains. The results show that hybridizing coastal ferry powertrains may reduce NOₓ concentrations by up to 45 %, offering substantial air quality improvements alongside decarbonization benefits, particularly in densely populated and environmentally sensitive coastal zones.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118752"},"PeriodicalIF":4.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213194","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":"Assessment of natural radioactivity levels in estuaries and coastal mangrove forests: A case study from the coastal area of Soc Trang, Vietnam","authors":"Phan Quang Trung ,&nbsp;Huynh Duc Hoan ,&nbsp;Nguyen Thi Huong Lan ,&nbsp;Le Xuan Thang ,&nbsp;Nguyen Minh Dao ,&nbsp;Nguyen Huu Nghia ,&nbsp;Tran Tuan Anh ,&nbsp;Phan Sơn Hai ,&nbsp;Nguyen Dang Khue","doi":"10.1016/j.marpolbul.2025.118777","DOIUrl":"10.1016/j.marpolbul.2025.118777","url":null,"abstract":"<div><div>Estuarine and coastal regions globally, including those in Vietnam, act as natural sinks for sediments transported from upstream catchments. This study aims to evaluate the levels of natural radioactivity, specifically ²²⁶Ra, ²³²Th, ⁴⁰K, and ¹³⁷Cs, in estuarine and mangrove sediments along the coastal area of Soc Trang Province, Vietnam. A total of 32 surface sediment samples were collected from various locations within estuarine and mangrove environments. The activity concentrations of the radionuclides were measured using high-resolution gamma spectrometry. The results showed that the concentration ranged from of 21.3 ± 1.1 Bq/kg to 52.6 ± 2.6 Bq/kg for ²²⁶Ra, 24.5 ± 1.2 Bq/kg to 57.3 ± 2.9 Bq/kg for ²³²Th, and 349 ± 18 Bq/kg to 654 ± 33 Bq/kg for ⁴⁰K. Radiological risk indices including the absorbed gamma dose rate (D = 72 nGy h⁻¹), annual effective dose equivalent (AEDE = 88 μSv y⁻¹), Radium equivalent level (Ra_eq = 151), External hazard indices (H_ex = 0.39) and excess lifetime cancer risk (ELCR = 0.35) were subsequently calculated to assess potential health and environmental risks. These values exceed global average levels reported by international organizations such as UNSCEAR. The study results provide baseline data essential for long-term radiological monitoring and environmental risk assessment in mangrove-dominated coastal ecosystems subjected to increasing anthropogenic stress.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118777"},"PeriodicalIF":4.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213222","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":"Water quality monitoring for coastal hypoxia: Integration of satellite imagery and machine learning models","authors":"Sajad Basirian ,&nbsp;Mohammad Najafzadeh ,&nbsp;Ibrahim Demir","doi":"10.1016/j.marpolbul.2025.118735","DOIUrl":"10.1016/j.marpolbul.2025.118735","url":null,"abstract":"<div><div>Effective monitoring of water quality is essential to mitigate the development and expansion of dead zones—regions with dangerously low dissolved oxygen (DO) levels that threaten aquatic ecosystems. Traditional methods for water quality assessment are often expensive and time-intensive, highlighting the need for more efficient approaches. Advances in remote sensing technology and high-resolution satellite imagery have created new possibilities for large-scale water quality monitoring research. This study aims to estimate DO levels in Long Island Sound, New York, to detect and map dead zones using Landsat 9 satellite imagery and seven Artificial Intelligence (AI) models: Adaptive Boosting (AdaBoost), Extreme Gradient Boosting (XGBoost), Categorical Boosting (CatBoost), Support Vector Machine (SVM), K-Nearest Neighbors (KNN), Random Forest (RF), and M5 Model Tree. Using observational DO data and spectral properties from 11 Landsat 9 bands, the AI models were trained and validated for accuracy and uncertainty performance. Among them, XGBoost showed the best performance, offering the highest prediction accuracy and the lowest uncertainty. The results demonstrate the potential of integrating satellite-based remote sensing with AI models for efficient, scalable, and cost-effective monitoring of water quality and dead zones, enabling informed decision-making for environmental management and ecosystem conservation.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118735"},"PeriodicalIF":4.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213251","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":"Tracing localised nutrient loading to Posidonia oceanica epiphyte community assemblages in the eastern Aegean Sea","authors":"Gian Luca Naccarato ,&nbsp;Arne Cierjacks ,&nbsp;Alice Malcolm-McKay ,&nbsp;María Moran García ,&nbsp;Laura Macrina ,&nbsp;Anastasia Miliou","doi":"10.1016/j.marpolbul.2025.118738","DOIUrl":"10.1016/j.marpolbul.2025.118738","url":null,"abstract":"<div><div>The occurrence of localised nutrient loading in small coastal communities of the Mediterranean threatens the functionality of seagrass ecosystems, underscoring the need to reliably identify their onset and magnitude. However, short-term measurements of nutrient levels can be an inaccurate measure of sustained nutrient loading due to the spatiotemporal variability of coastal hydrodynamics. Alternatively, we examined the suitability of epiphyte assemblages on <em>Posidonia oceanica</em> leaves as indicators of anthropogenic nutrient enrichment of coastal waters for the first time in the eastern Aegean Sea. We studied seagrass biometric and meadow parameters at control and impacted sites, in addition to epiphyte community composition and structure at a depth of 5 m during winter 2022. Sites were classified a priori using a modified version of the Land Use Simplified Index (LUSI). Impacted meadows exhibited lower leaf length and shoot density, as well as higher epiphyte cover and biomass. The composition of epiphyte communities shifted significantly, with clear differences observed in red coralline algae, filamentous brown algae, and annelids. Our results indicated that potentially increased nutrient availability from point and diffuse sources, such as wastewater discharge and agricultural activity, may have affected seagrass bed condition. We observed substantial epiphyte cover, causing both direct (shading) and indirect (intensified grazing pressure; physical instability of leaves) effects. Our study demonstrates that epiphyte communities, in combination with the LUSI, serve as accurate and cost-effective indicators of nutrient loading in coastal waters. Regular monitoring could enable early detection of elevated nutrient levels and help prevent the long-term decline of seagrass meadows.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118738"},"PeriodicalIF":4.9,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145213256","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":"Interactions of multiple abiotic stresses exacerbate mollusk diversity loss in a high-discharge coastal mangrove wetland","authors":"Guogui Chen ,&nbsp;Yuanyuan Mo ,&nbsp;Xuan Gu ,&nbsp;Wenqing Wang ,&nbsp;Liang Yue ,&nbsp;Baoshan Cui ,&nbsp;Zhenchang Zhu","doi":"10.1016/j.marpolbul.2025.118775","DOIUrl":"10.1016/j.marpolbul.2025.118775","url":null,"abstract":"<div><div>Coastal regions, as a hotspot region of biodiversity and the most densely populated areas in the world, are increasingly threatened by anthropogenic disturbances, including warming, acidification, eutrophication, salinity fluctuation, and oxygen loss. Although massive single-factor studies have revealed the ecological catastrophe caused by these impacts, how these impact stressors interact to endanger coastal biodiversity that is critical for ecosystem stability and human well-being is still poorly understood. To investigate whether and how water warming, acidification, eutrophication, salinity fluctuation and oxygen loss interact with each other to impact the mangrove mollusk diversity, a long-term study was conducted in the mangroves of Chinese Daya Bay from 1987–1993 to 2017–2021. We found that water temperature, chlorophyll-a, total nitrogen (TN) and total phosphorus (TP) increased significantly, while the water pH, salinity, dissolved oxygen (DO) and mollusk species richness decreased obviously, reflecting water warming, eutrophication, acidification, salinity fluctuation, oxygen loss and biodiversity loss occurred in the Daya Bay. The mangrove mollusk diversity had a significant response to the water warming, eutrophication, acidification, salinity fluctuation, oxygen loss (<em>p</em> &lt; 0.001). The average incidences of mollusk diversity loss due to the changes in water pH, temperature, TP, TN, chlorophyll-a, salinity and DO were 47.11 %, 35.56 %, 35.53 %, 34.48 %, 34.22 %, 34.15 % and 33.05 %, respectively. Moreover, the average effect of interactions between any two water factors on the mollusk diversity was 0.998, which was 22.5 % larger than their single effect on biodiversity of 0.814. The findings suggest that interactions between global change stressors can exacerbate biodiversity loss in coastal wetlands. Quantifying those effects in terms of multi-factor interactions will contribute to the coastal management and restoration based upon combined evidence rather than a one-sided single perspective.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"222 ","pages":"Article 118775"},"PeriodicalIF":4.9,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145206873","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}