Marine pollution bulletin最新文献

{"title":"The combined effects of ocean warming and microplastic pollution on marine phytoplankton community dynamics","authors":"Abigail Cousins,&nbsp;Nathalie Fenner,&nbsp;Dan Aberg,&nbsp;Christian Dunn","doi":"10.1016/j.marpolbul.2025.118286","DOIUrl":"10.1016/j.marpolbul.2025.118286","url":null,"abstract":"<div><div>Microplastics (MPs) and ocean warming present a dual threat to marine phytoplankton, with significant but not fully understood effects. This study assessed how projected MP pollution and rising water temperatures influence phytoplankton biomass, abundance, and diversity. While MPs at future concentrations did not impact biomass or abundance at current temperatures, under projected warming conditions, biomass decreased by 41 % and diversity by 38.8 % in MP-exposed samples. This suggests that MP toxicity, aggregation, and reduced light penetration, intensified by warming, can inhibit phytoplankton growth. Diatoms, crucial for global primary productivity, were especially affected, with declines in their abundance and diversity potentially reducing carbon sequestration by up to 10.45 billion tons annually. Community composition shifted towards fewer genera, implying lower biodiversity and resilience, which could disrupt marine food webs and affect human populations. Seagrass wetlands, a Nature-based Solution, might mitigate some impacts by trapping MPs and limiting their effects on phytoplankton. These results highlight the urgent need for further research to address and mitigate the combined impacts of MPs and warming on marine ecosystems, due to potential broad ecological and socioeconomic repercussions.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118286"},"PeriodicalIF":5.3,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262233","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":"UV-degradation is a key driver of the fate and impacts of marine plastics. How can laboratory experiments be designed to effectively inform risk assessment?","authors":"Laura M. Hernandez ,&nbsp;Lucy Howarth-Forster ,&nbsp;Lisbet Sørensen ,&nbsp;Andy M. Booth ,&nbsp;Alice Vidal ,&nbsp;Nathalie Tufenkji ,&nbsp;Richard Sempéré ,&nbsp;Natascha Schmidt","doi":"10.1016/j.marpolbul.2025.118271","DOIUrl":"10.1016/j.marpolbul.2025.118271","url":null,"abstract":"<div><div>Marine plastic litter is subject to different abiotic and biotic forces that lead to its degradation, the main driver being UV-induced photodegradation. Since UV-exposure leads to both physical and chemical degradation of plastic, leading to a release of micro- and nanoplastics as well as leaching of chemicals and degradation products – it is expected to have radical impacts on plastics fate and effects in the marine environment. The number of laboratory studies investigating the mechanisms of plastic UV-degradation in seawater has increased significantly in the past 10 years, but are the exposures designed in a manner that allow observations to be extrapolated to environmental fate? Most studies to date focus on quantifying plastic fragmentation and surface changes, but is this relevant for impact assessments? Here, we provide a review of the current scientific literature on UV-degradation of plastic under marine conditions. Plastic fragmentation processes and surface changes as well as implications of UV-degradation of plastics on additive leaching and the toxicity of UV-weathered versus non-weathered plastics are highlighted. Furthermore, experimental set-ups are critically inspected and recommendations for future studies are issued.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118271"},"PeriodicalIF":5.3,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262234","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 responses of Gutweed Ulva intestinalis (Linnaeus, 1753) exposed to high-density polyethylene microplastics","authors":"Philippe Anthony M. Alfafara ,&nbsp;Pauleanne B. Nacario ,&nbsp;Nelle Adrian M. Ceniza ,&nbsp;Eugene T. Bacolod ,&nbsp;Maria Kristina O. Paler ,&nbsp;Maria Ligaya S. Suico ,&nbsp;Alvin P. Monotilla ,&nbsp;Ric Jacob Y. Hernandez ,&nbsp;Noel Peter B. Tan ,&nbsp;Lorenz Inri C. Banabatac","doi":"10.1016/j.marpolbul.2025.118282","DOIUrl":"10.1016/j.marpolbul.2025.118282","url":null,"abstract":"<div><div>Pollution by microplastics (MPs) in aquatic environments remains a global concern. Despite recent developments, there is a knowledge gap in the implications of MP pollution on autotrophic aquatic organisms such as macroalgae. The response of green macroalgae species, <em>Ulva intestinalis</em> to high-density polyethylene microplastics (HDPE-MPs) was investigated. Scanning Electron Microscopy (SEM) and Attenuated Total Reflectance – Fourier Transform Infrared (FT-IR) Spectroscopy showed adherence of HDPE-MPs onto surfaces of <em>U. intestinalis.</em> The following parameters were assessed: growth rate, chlorophyll content, and protein carbonyl content. The 14-day exposure assay entailed one control group (0 mg/L) and the HDPE-MP treated group (100 mg/L). The treatment of HDPE-MPs in <em>U. intestinalis</em> has a significant effect on the aforementioned parameters (<em>p</em> &lt; 0.05). The treated group showed a lower growth rate (1.24 vs. 3.15 %) and chlorophyll content (0.705 vs. 0.911 mg/g), and higher protein carbonyl content (1.654 vs. 0.571 nmol DNPH/mg protein). These findings suggest that HDPE-MP exposure can negatively affect physiological processes in <em>U. intestinalis</em>. Subsequently, this study features the potentially adverse effects of MPs on autotrophic aquatic organisms.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118282"},"PeriodicalIF":5.3,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255477","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":"Microplastic contamination in fish: A systematic global review of trends, health risks, and implications for consumer safety","authors":"Himanshu Jangid ,&nbsp;Joydeep Dutta ,&nbsp;Arun Karnwal ,&nbsp;Gaurav Kumar","doi":"10.1016/j.marpolbul.2025.118279","DOIUrl":"10.1016/j.marpolbul.2025.118279","url":null,"abstract":"<div><div>Microplastic contamination in fish presents a growing environmental and public health concern, with implications that extend from aquatic ecosystems to consumer safety. This review presents a systematic summary of current knowledge about the health hazards of microplastics in fishes, including bioaccumulation, transfer mechanisms in the food chain, and the roles of microplastics as carriers of antibiotic-resistant genes. By comparing the level of contamination in both safely grown mud fish under aquaculture and directly from natural sources such as nearby coastal areas, we are able to point out the fluctuations of the risks of being contaminated from the different sources for a common consumer and suitable bodies to take action on which type of seafood should be preferred. Using bibliometric data, the study notes that research activity has increased significantly in recent years due to awareness and collaboration across disciplines where China, India, and Italy lead in scientific output. The distribution of keyword themes over time shows the transition from highly specialized toxicological content towards more fundamental genomics and system-oriented ideas regarding molecular, ecosystem, and human health. Furthermore, case studies and experimental works concerning contaminants such as POPs, heavy metals, and pathogenic bacteria are incorporated in this review along with the relationship between fish bioaccumulation of these contaminants and toxicological impacts on humans. Finally, this review points to the dictum that the problem of aquaculture strongly demands future directions regarding the regulation and the management of its sustainable practices, as well as consumer's awareness of the part of health risks they incur in between. The present review tries to assess the current state of knowledge on microplastics in the marine food chain and to define areas relevant for further investigation and the policy implications arising from the impacts of microplastics in the ecosystem.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118279"},"PeriodicalIF":5.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242687","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":"Evidence of bioaccumulation of selected persistent organic pollutants in a tropical estuary in southern Puerto Rico","authors":"Henry Alegría ,&nbsp;Michael Martínez-Colón ,&nbsp;Ashley Huber ,&nbsp;Adebayo Solanke ,&nbsp;Angel Dieppa","doi":"10.1016/j.marpolbul.2025.118264","DOIUrl":"10.1016/j.marpolbul.2025.118264","url":null,"abstract":"<div><div>At the Jobos Bay National Estuarine Research Reserve in Puerto Rico historical evidence exists of usage of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs). In this study, sediment, <em>Avicennia germinans</em> (black mangrove) leaf litter, and whole-body soft tissue of <em>Minuca rapax</em> (fiddler crab) were analyzed to assess trophic transfer mechanisms. Of these pollutants, PCBs were detected in all samples while p,p’-DDE and o,p’-DDT were the most frequently detected OCPs. “Fractionation” is observed for PCBs, where lighter PCBs are more frequently found in both <em>A. germinans</em> and <em>M. rapax</em> while heavier PCBs were detected more in the sediments. Biota-Sediment Accumulation Factors (BSAFs) indicate that there is uptake of p,p’-DDE, o,p’-DDT, and lighter PCBs by <em>M. rapax</em> and <em>A. germinans</em> from sediments while Bioaccumulation Factors (BAFs) indicate little bioaccumulation by <em>M. rapax</em> from mangroves. For heavier PCBs, BSAFs suggest that there is uptake by <em>A. germinans</em> but less by <em>M. rapax</em> from sediments while BAFs indicate little uptake by <em>M. rapax</em> from mangroves.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118264"},"PeriodicalIF":5.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144255476","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":"The influence of chronic cadmium exposure on the activity of adult Pelophylax nigromaculatus revealed by brain transcriptomics and metabolomics","authors":"Yuhao Zhang,&nbsp;Minyi Huang,&nbsp;Renyan Duan,&nbsp;Wentao Huang,&nbsp;Zikang Tan","doi":"10.1016/j.marpolbul.2025.118287","DOIUrl":"10.1016/j.marpolbul.2025.118287","url":null,"abstract":"<div><div>Cadmium (Cd), a common environmental pollutant, has potentially negative effects on the behavior of aquatic animals. This study investigated the effects of exposure to Cd (0 mg/L, 1 mg/L and 10 mg/L) on movement behavior, brain metabolites, and brain gene expression of adult <em>Pelophylax nigromaculatus</em>. Treatments with 1 mg/L and 10 mg/L Cd resulted in a significant increase in movement frequency, movement time, average speed of movement, and movement distance. It was evident that Cd treatments had a significant impact on brain metabolic pathways, including the purine metabolism, glycerophospholipid metabolism and the mTOR signaling pathway. Cd treatments significantly altered the relative abundance of brain metabolites, including phosphatidylserine, phosphatidylethanolamine and adenosine monophosphate. In addition, Cd treatments altered the KEGG pathways, including the TNF signaling, IL-17 signaling and tuberculosis, as well as the gene expression of <em>PI3K</em> and <em>AKt</em>. The results indicated that heavy metal pollutants could affect the brain metabolism and transcription in amphibians of amphibians, leading to active movement behaviors.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118287"},"PeriodicalIF":5.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242683","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":"In situ evaluation of genotoxicity and cytotoxicity associated with microplastics in an intertidal clam, Gafrarium divaricatum (Gmelin, 1791)","authors":"M. Harshavarthini ,&nbsp;Shubra Singh ,&nbsp;Prem Kumar ,&nbsp;Martin Xavier ,&nbsp;Saurav Kumar ,&nbsp;Nalini Poojary ,&nbsp;Madhuri S. Pathak ,&nbsp;Kiran D. Rasal ,&nbsp;Gajanan S. Ghode ,&nbsp;Naresh S. Nagpure","doi":"10.1016/j.marpolbul.2025.118268","DOIUrl":"10.1016/j.marpolbul.2025.118268","url":null,"abstract":"<div><div>Microplastics (MP) are an emerging contaminant posing a significant threat to aquatic biota. While numerous studies have documented diverse pollutant abundances along the Maharashtra coast, in situ data on their impacts are lacking. This study presents the first comprehensive assessment of the spatial distribution of MP in water, sediments, and clams (<em>Gafrarium divaricatum</em>), and evaluates their toxicity. Five sampling stations Aksa (S1), Bandra (S2), Alibagh (S3), Shrivardhan (S4), and Ratnagiri (S5) were selected. Microplastics were quantified and characterized using Fourier Transform Infrared Spectroscopy (FTIR) and a stereo-zoom microscope. Genotoxicity and cytotoxicity were assessed using the comet and clam micronucleus cytome assays (CMNCyt), respectively. Microplastics were abundant in sediment (13,646.35 ± 4565.8 items/kg), followed by water (617.77 ± 214.93 items/L) and clam tissues (74.17 ± 24.80 items/individual). Comet assay showed that % tail DNA, an indicator of DNA damage, ranged from 8.78 ± 0.84 % (Site S5) to 21.15 ± 0.95 % (Site S2) in gill cells, and from 9.33 ± 0.41 % (Site S5) to 23.95 ± 1.38 % (Site S2) in intestine cells. Similarly, cytome assay revealed a range of total cellular abnormalities from 3.14 % to 12.00 % in gill cells and from 5.27 % to 17.61 % in intestine cells. The occurrence of MP and toxicity assays in <em>G. divaricatum</em> indicated a decreasing trend in contamination from S2 to S5 (S2 &gt; S1 &gt; S3 &gt; S4 &gt; S5), reveal that MP has a serious concern for aquatic biota particularly in the Mumbai region, highlighting the need for remedial measures and policies to mitigate plastic pollution and promote sustainable coastal management.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118268"},"PeriodicalIF":5.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242682","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":"Profiling accumulated PAHs and metabolomic responses in truncate soft-shell clam (Mya truncata) in the Canadian Arctic","authors":"Aaron Boyd ,&nbsp;Thor Halldorson ,&nbsp;Zhe Xia ,&nbsp;Gregg T. Tomy ,&nbsp;Piero Calosi ,&nbsp;Ken M. Jeffries","doi":"10.1016/j.marpolbul.2025.118276","DOIUrl":"10.1016/j.marpolbul.2025.118276","url":null,"abstract":"<div><div>Arctic ecosystems face many contamination challenges due to increasing human development and long-range atmospheric transport. Among these contaminants of concern are polycyclic aromatic hydrocarbons (PAHs) due to their variety of natural and anthropogenic sources related to oil spills and the combustion of organic substances. As a result, PAHs present a potential threat to Northern communities that harvest local species for food, which may accumulate or be negatively impacted by PAHs. To address these concerns, this study quantified the impacts of PAHs on an important locally harvested food source by quantifying contaminant burdens in the marine clam <em>Mya truncata</em>, collected from Frobisher Bay near the city of Iqaluit, Canada. Metabolomic responses were assessed to identify common biomarkers of PAH stress to further develop <em>M. truncata</em> as a biomonitor species. Σ₅₂ PAH burdens were 20.5 ± 0.8 ng·g⁻¹ ww in clams collected close to Iqaluit's wastewater treatment plant discharge, decreasing to 10.6 ± 1.1 ng·g⁻¹ ww ∼3 km away. Diagnostic ratios indicate that these PAHs are from a mixture of pyrogenic and petrogenic sources, dominated by a large diversity of alkylated PAHs. Clams were able to compensate for contaminant burdens as no changes in physiological characteristics were observed between study sites. Metabolomic analyses revealed a signature of increased glutathione production for possible antioxidant activities, and an increase in aerobic and anaerobic metabolism. Due to the non-detection of the most toxic PAHs as well as the low accumulated burdens, the threats of PAH contamination to <em>M. truncata</em> in the region appear relatively low.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118276"},"PeriodicalIF":5.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242686","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":"Accumulation and transport of 239+240Pu and 137Cs in bays of the northern South China Sea","authors":"Yongjing Guan ,&nbsp;Xiaomin Wei ,&nbsp;Shenzhen Wang ,&nbsp;Jianhui Lai ,&nbsp;Chunping Huang ,&nbsp;Shuyi Wang ,&nbsp;Lingyi Wang ,&nbsp;Gang Li ,&nbsp;Zhiyong Liu","doi":"10.1016/j.marpolbul.2025.118278","DOIUrl":"10.1016/j.marpolbul.2025.118278","url":null,"abstract":"<div><div>Hydrodynamic conditions, material sources, and redox environments vary significantly across different bays. Plutonium, with multiple valence states and particle-reactive properties, exhibits sediment distribution patterns highly sensitive to environmental controls. The activity concentration and vertical distribution of ^239+240Pu and ¹³⁷Cs in sediments from six bays in the northern South China Sea (Zhanjiang Bay, Daya Bay, Leizhou Bay, Shantou Bay, Liusha Bay, Dapeng Bay) were analyzed with respect to local environmental conditions. The activity concentration of ^239+240Pu and ¹³⁷Cs in sediment cores were analyzed by SF-ICP-MS and γ spectrometry, respectively. Distinct ^239+240Pu peaks were observed in the sediment cores, with ¹³⁷Cs profiles showing similar vertical patterns. Activity concentration distributions differed markedly between the two radionuclides, showing inventory ranges of 14 Bq/m² to 261 Bq/m² for ^239+240Pu and 480 Bq/m² to 2888 Bq/m² for ¹³⁷Cs across the bays. The ²⁴⁰Pu/²³⁹Pu atomic ratios indicated that 35 % to 66 % of Pu originated from the Pacific Proving Grounds (PPG) source. The advection-dispersion equation (ADE) model was employed to quantify transport parameters, yielding dispersion rates (<em>D</em>) and sedimentation rates (<em>v</em>) for ^239+240Pu and ¹³⁷Cs corresponding to the maximum deposition peak observed in 1963. Through ADE - model based fitting of the vertical distribution of ^239+240 Pu, <em>v</em> ranges from 0.12 ± 0.07 cm/a to 1.02 ± 0.07 cm/a, and <em>D</em> varies from 0.13 ± 0.01 cm²/a to 1.15 ± 0.24 cm²/a. The <em>v</em> value derived from the ADE model fitting of ¹³⁷Cs exhibits a similar range to that of ^239+240Pu.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118278"},"PeriodicalIF":5.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242684","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":"Quantifying vessel noise and acoustic habitat loss in marine soundscapes","authors":"B. Hendricks ,&nbsp;M.K. Pine ,&nbsp;G. Baer ,&nbsp;M. Welton ,&nbsp;H.K. Symonds ,&nbsp;D.T. Dakin ,&nbsp;H.M. Alidina ,&nbsp;C.R. Picard ,&nbsp;J. Wray","doi":"10.1016/j.marpolbul.2025.118150","DOIUrl":"10.1016/j.marpolbul.2025.118150","url":null,"abstract":"<div><div>Quantifying underwater vessel noise in marine ecosystems is challenging, due to difficulties in accounting for small, not publicly tracked boats, creating a knowledge gap in marine management. We present a computationally efficient framework that detects all vessel noise in hydrophone recordings and quantifies associated excess noise levels as well as acoustic habitat loss, offering a cost-effective and replicable tool for assessing vessel noise effects on marine soundscapes. Applied to one year of acoustic data from five sites along the coast of British Columbia (BC), Canada, the detector achieved 96.4 % accuracy and was robust against varying levels of vessel traffic and weather conditions. Across sites, vessel noise impacts increased with proximity to urban centers. Following this trend, average annual vessel noise presence ranged between 24 % and 85 %, increasing the 500 Hz decidecade band by 1.0 dB to 6.4 dB across sites. The average year-round acoustic habitat loss for killer whales, expressed as the reduction of listening space in a 0.5–15 kHz communication band, ranged from 6.6 % to 46.9 %. Vessel noise impacts were generally higher during daylight hours and in the summer months. The results are the first comprehensive, empirical assessment of vessel presence and associated noise impacts for a regional ecosystem in BC.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"219 ","pages":"Article 118150"},"PeriodicalIF":5.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242685","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}