Frontiers in Marine Science最新文献

{"title":"Spreading further: the first record of the alien bivalve Theora lubrica in the Southwestern Atlantic Ocean","authors":"Fabrizio Marcondes Machado, Cristiane Midori Suga, Fabio Kiyoshi Camara Onodera, Mariana Sousa Melo, Thais Viti, Vilma Maria Cavinatto, Ana Carolina da Rocha Lammardo, Carolina Yumi Yonamine, Regina Sawaia Sáfadi, Luis Antonio Nogueira-Junior, Luiz Fernando Maciel Oliva","doi":"10.3389/fmars.2025.1511313","DOIUrl":"https://doi.org/10.3389/fmars.2025.1511313","url":null,"abstract":"Biological invasions are globally recognized as one of the main drivers of biodiversity loss. Over the past four decades, there has been significant progress in understanding the mechanisms of alien species introduction into marine and estuarine environments. It is currently known that although humans can spread non-native species in various ways (e.g. aquaculture, vessel biofouling and oil and gas activities), ballast water is one of the most effective being considered one of the main threats to marine biodiversity. This pathway also appears to be the main transport vector to explain the spread of the exotic bivalve <jats:italic>Theora lubrica</jats:italic> (or Asian Semele) since the late 1950s. In this study, we report for the first time the presence of Asian Semele in the Southwestern Atlantic, specifically along the Southeast coast of Brazil. Furthermore, we also provide new insights into shell morphology, gross anatomy and ecological aspects, as well as the updated global distribution of this invasive alien species.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"13 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of laser ablation and solution-based ICP-MS applications commonly used in otolith geochemical analysis of marine teleosts","authors":"Michelle Zapp Sluis, Daniel L. Lippi, Phillip J. Sanchez, Nathaniel R. Miller, Shane A. Stephens, Beatrice P. Ferreira, Jay R. Rooker","doi":"10.3389/fmars.2025.1531755","DOIUrl":"https://doi.org/10.3389/fmars.2025.1531755","url":null,"abstract":"Different applications of inductively coupled plasma mass spectrometry (ICP-MS) have the potential to influence results of otolith geochemical assays. Laser ablation and solution-based ICP-MS were compared on paired otoliths from three species of juvenile fish representative of estuarine (red drum [<jats:italic>Sciaenops ocellatus</jats:italic>]), coastal/reef (gray parrotfish [<jats:italic>Sparisoma axillare</jats:italic>]), and pelagic (blackfin tuna [<jats:italic>Thunnus atlanticus</jats:italic>]) ecosystems. Additionally, two laser ablation techniques (continuous line transects and series of spots) were performed to determine whether these two commonly used approaches yielded comparable results. No significant differences existed between line transects and spots for any of the three species investigated, with high correlations occurring for all otolith element:Ca (E:Ca) values retained for statistical testing (Mg:Ca, Mn:Ca, Sr:Ca, Ba:Ca), suggesting that both laser ablation techniques produced equivalent otolith E:Ca values. In contrast, pronounced differences in E:Ca values were detected between laser ablation (across otolith transverse section) and solution-based (whole otolith dilution) applications on paired sagittal otoliths. While some E:Ca discrepancies varied among the three species, overall otolith E:Ca values were higher when quantified by laser ablation, except for Ba:Ca which tended to be higher when analyzed by solution-based ICP-MS. Differences observed between laser ablation and solution-based applications are the result of the allometric growth of the otolith and may become more pronounced in older, larger individuals as the differential growth along the otolith axes becomes less uniform with age. Further, laser ablation techniques can examine life history profiles and discern fluctuations over time, proving a preferred application over solution-based analysis.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"32 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143518752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of plume dispersion and measurement techniques applicable to marine cloud brightening","authors":"Diana C. Hernandez-Jaramillo, Brendan Kelaher, Daniel P. Harrison","doi":"10.3389/fmars.2025.1450175","DOIUrl":"https://doi.org/10.3389/fmars.2025.1450175","url":null,"abstract":"Rising sea surface temperatures are causing more frequent and intense coral bleaching events, threatening the long-term survival of coral reefs globally. Marine Cloud Brightening (MCB) is a proposed intervention that could be applied globally or regionally to cool sea surface temperatures and reduce the risk and severity of coral bleaching. The effectiveness and logistical feasibility of this technique depends on what fraction of the sea salt aerosols are incorporated into clouds after being emitted from a seawater spraying operation at the ocean surface. Here, we review the literature on the dispersion of MCB sea salt aerosols from a point source within the marine boundary layer. We focus our consideration on the processes, mechanisms, and current ability to predict the horizontal and vertical evolution of the plume from its generation at surface level to its downwind dispersion and mixing to cloud height. Overall, we found that in the more than three decades since the MCB concept was first proposed there have been eight studies investigating this aspect of MCB, which is crucial to informing engineering systems design, marine logistics, and assessing the overall potential effectiveness of MCB. To date, only one study has validated the modeling of the aerosol dispersion using empirical experiments and only a few studies have considered non-passive processes such as the negative buoyancy associated with the evaporative cooling of the water droplets, as well as particle scavenging due to coagulation and deposition. Priority areas for future research are identified as far-field dispersion of the MCB plume and estimations of the portion of MCB aerosol reaching cloud base.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"28 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143506844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel strategy for fast liquefaction detection around marine pipelines: a finite element-machine learning approach","authors":"Xing Du, Yongfu Sun, Yupeng Song, Wanqing Chi, Zongxiang Xiu, Xiaolong Zhao, Dong Wang","doi":"10.3389/fmars.2025.1518679","DOIUrl":"https://doi.org/10.3389/fmars.2025.1518679","url":null,"abstract":"With the increasing global exploration of marine resources, ensuring the stability of submarine pipelines under adverse conditions—such as strong ocean waves and seismic events—remains a significant challenge. This study focuses on buried pipelines in seabed sediments, which are particularly vulnerable to sediment liquefaction caused by dynamic loading, posing a serious threat to pipeline safety. This study proposes an approach that integrates finite element analysis with machine learning. The approach begins with finite element methods for comprehensive simulations, using the high-quality data generated to enable rapid and accurate prediction of liquefaction under wave-current interactions. The results demonstrate that submarine pipelines significantly affect the direction and extent of sediment liquefaction, with the sides of the pipelines being more prone to liquefaction compared to the tops and bottoms. The pipelines also have a stabilizing effect on surrounding seabed sediments. Moreover, the integrated model improves assessment speed without compromising accuracy, effectively addressing the need for rapid liquefaction analysis over large areas and multiple points. This study provides valuable theoretical and practical insights for marine engineering by confirming the stabilizing effect of pipelines on adjacent sediments.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"129 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143506845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shoreline_veget— a new shoreline extraction method for vegetation seas, with high robustness, accuracy and scalability","authors":"Weihua Li, Lianglin Liu, Wei Zhu, Jiuming Li, Teng Liu","doi":"10.3389/fmars.2025.1491085","DOIUrl":"https://doi.org/10.3389/fmars.2025.1491085","url":null,"abstract":"To address the issue of vegetation obstructing water bodies and resulting in missing information in vegetation sea areas, existing methods that focus on various types of shorelines often exhibit limited algorithm stability and accuracy. This study introduces a method, termed Shoreline_veget. The method comprises four modules: data preprocessing, point cloud boundary extraction and processing, elevation gradient function design, modified fused boundary point cloud, and tidal correction. This method can reduce the overall shoreline accuracy from 0.6658, 0.3854, and 0.4127 (as observed with three comparative methods) to 0.1531. Compared to the least accurate method, this method improved the overall shoreline accuracy by 0.5127 m. The result confirm that the proposed method offers superior stability, and this methodology provides new technology to measure, map, and manage shorelines, offers valuable insight for related research.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"4 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143506846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated ecological quality assessment of the sea area adjacent to the Yellow River estuary under multiple pollutants","authors":"Wen Li, Jinqing Ye, Xin Gao, Yunlei Zhang, Ying Li, Hongjun Li","doi":"10.3389/fmars.2025.1542611","DOIUrl":"https://doi.org/10.3389/fmars.2025.1542611","url":null,"abstract":"Estuaries are increasingly threatened by pollutants derived from human activities, which severely impair their water quality, biodiversity, and ecological functions. Therefore, within this context, it is essential to conduct comprehensive and scientifically rigorous assessments of estuarine ecological quality. Taking the Yellow River estuary as a case study, a composite index was here developed to evaluate the impacts of eutrophication and heavy metal pollution on estuarine ecological quality. The Trix eutrophication index and potential ecological risk index revealed significant risks of eutrophication and heavy metal pollution. Redundancy analysis identified that nutrients (NO<jats:sub>2</jats:sub>-N and NO<jats:sub>3</jats:sub>-N) and heavy metals (Cd, Hg, and Cr) were the primary pollutants affecting the composition of dominant macrofauna. Threshold Indicator Taxa Analysis was used to identify indicator species for these pollutants and, based on them, bioindicators capable of reflecting eutrophication and heavy metal pollution levels were then determined. A composite index integrating these bioindicators with other biotic indexes was constructed for comprehensive ecological quality assessment. The results showed that the ecological quality of the estuary was good, with values being even lower in the nearshore area. Structural equation modeling confirmed that estuarine ecological quality was significantly influenced, both directly and indirectly, by multiple pollutants, validating the effectiveness of the composite index as an analytical tool. We argue that integrating bioindicators of major pollutants with other benthic indexes into the developed composite index allows to effectively assess the effects of multiple pollutants on estuarine ecological quality and provide valuable insights for ecosystem management.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"25 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The characteristics and potential transport trajectory of epimicroplastic red tide species in the Taiwan Strait","authors":"Conghui Peng, Kang Wang, Hui Lin, Shunyang Chen, Xu Dong, Yahui Gao, Baohong Chen, Fangfang Kuang","doi":"10.3389/fmars.2025.1547278","DOIUrl":"https://doi.org/10.3389/fmars.2025.1547278","url":null,"abstract":"Due to the carrier’s role of microplastics, attached microalgae may be transported further, posing a threat to marine ecosystems, especially those red tide species. By combining the investigated results of Dongshan Bay and Quanzhou Bay with the simulation of transport trajectories using the Lagrangian particle tracking model, this study systematically investigated the characteristics and transport trajectories of epimicroplastic red tide species. Based on the investigations of Dongshan Bay and Quanzhou Bay respectively in summer of 2022, the characteristics of epimicroplastic red tide species were learned. Results showed that totally 13 red tide species were found in two bays, with 6 species in Dinophyta, 5 species in Diatom, 1 species in Ochrophyta and 1 species in Cyanophyta respectively. Also, the potential transport trajectories of epimicroplastic species were simulated to study their effect to the ecological environment of the surrounding waters. According to the simulated transport trajectories, those species could be transported further by microplastics while some particles would be obstructed during these three-month processes. During the transport processes, epimicroplastic red tide species from two bays would influence three provinces, which have high records of red tide outbreak in China. This study firstly combined models to investigate the potential transport trajectory of epimicroplastic red tide species, providing insights into the mechanisms of red tide outbreak.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"28 6 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the ecological impacts of dominant non-indigenous sessile invertebrates in peninsular coastal ecosystems","authors":"Michael Dadole Ubagan, Taekjun Lee, Yongeun Kim, Jeonghee Lee, Hoon Jeong, Yun-Sik Lee, Sook Shin","doi":"10.3389/fmars.2025.1499607","DOIUrl":"https://doi.org/10.3389/fmars.2025.1499607","url":null,"abstract":"Sessile invertebrates perform essential ecological functions in coastal ecosystems. This study aimed to provide an in-depth analysis of the status and distribution of sessile invertebrates along the peninsular coasts of South Korea, focusing on the potential ecological impacts of non-indigenous species. Fourteen sampling sites along the coastline of the Korean Peninsula were surveyed four times over a year, once in each season, to investigate the subtidal communities of sessile invertebrates. Based on the community data, this study identified indigenous and non-indigenous species and classified them into broadly present and regionally dominant species among geographically distinct coastal ecosystems in Korea. Effects of non-indigenous species on biodiversity within their dominance range were analyzed to identify species with potential significant ecological impacts. Results indicated that while some dominant non-indigenous species had no significant effects, others such as <jats:italic>Amphibalanus amphitrite</jats:italic> were associated with a loss of biodiversity in the Yellow Sea. This study highlights the importance of clearly distinguishing the range of dominant species and emphasizes the need for continuous monitoring to support early detection and inform management strategies for reducing negative impacts of non-indigenous species. This research provides new insights for assessing the influence of non-indigenous species within sessile invertebrate communities.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"51 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of ammonia nitrogen stress on liver tissue structure and physiological indicators, and metabolomic analysis of juvenile four-finger threadfin (Eleutheronema tetradactylum)","authors":"Jing-Hui Jin, Hao-Jie Wang, Eric Amenyogbe, Yi Lu, Rui-Tao Xie, Zhong-Liang Wang, Jian-Sheng Huang","doi":"10.3389/fmars.2025.1549668","DOIUrl":"https://doi.org/10.3389/fmars.2025.1549668","url":null,"abstract":"In intensive aquaculture, ammonia nitrogen (NH₃-N) is a major pollutant, causing oxidative stress and immune damage to aquatic organisms. The liver is crucial in protecting against biotic and abiotic stresses, but the response mechanisms to ammonia stress in juvenile four-finger threadfin (<jats:italic>Eleutheronema tetradactylum</jats:italic>) are not well understood. This study investigated these mechanisms by examining liver tissue structure, enzyme activities, and metabolomic changes in response to ammonia stress. Juvenile four-finger threadfin (7.4 ± 0.6 g) were divided into control, NH₃-N stress (50% LC<jats:sub>50</jats:sub> 96 <jats:sub>h</jats:sub>, 10 ± 0.4 mg/L), and postexposure recovery groups. Stress durations of 12, 24, 48, and 96 h were evaluated, followed by 48 h recovery. Prolonged ammonia stress led to increased liver tissue damage, including disordered hepatocyte arrangement, swelling, necrosis, and the disappearance of nucleoli. After 48 h recovery, liver damage was alleviated but did not fully return to control levels, suggesting that the toxic effects of ammonia are recoverable yet persistent. Antioxidant enzyme activities (superoxide dismutase, catalase, and glutathione peroxidase) initially showed significant increases peaking at 24 h after stress, before declining by 96 h. Malondialdehyde levels rose initially and remained elevated compared with controls. After 48 h of recovery, antioxidant enzyme activity had not returned to control levels, indicating inadequate recovery from ROS-induced stress. Metabolomic analysis revealed 1219 significantly different metabolites in the 96 h stress group, with increases in <jats:sub>L</jats:sub>-histidine, <jats:sub>L</jats:sub>-threonine, and cholesterol. In the recovery group, 904 metabolites differed from controls, with notable reductions in urea and choline. The key affected pathways included amino acid, lipid, and nucleotide metabolism. This study elucidates the toxic effects of ammonia nitrogen on juvenile four-finger threadfin and their adaptive responses through physiological and metabolomic changes, providing insights for aquaculture practices and breeding ammonia-tolerant strains.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"31 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Marine microbial biofilms on diverse abiotic surfaces","authors":"Shan Yu, Xindi Lu, Hailong Lu","doi":"10.3389/fmars.2025.1482946","DOIUrl":"https://doi.org/10.3389/fmars.2025.1482946","url":null,"abstract":"Marine biofilms are globally ubiquitous surface-associated microbial communities that have gained increasing attention due to their distinctive structure and functions. The aim of this study is to provide a comprehensive overview of the current scientific understanding, with a specific focus on naturally occurring biofilms that develop on diverse marine abiotic surfaces, including microplastics, seafloor sediments, subsurface particles, and submerged artificial structures susceptible to biocorrosion and biofouling induced by marine biofilms. This article presents recent advancements and discoveries concerning the diversity, structure, function, and dynamics of these surface-associated microbial communities in the marine environment, highlighting their ecological and biogeochemical dimensions, while also serving as an inspiration for further investigations into marine biofilms.","PeriodicalId":12479,"journal":{"name":"Frontiers in Marine Science","volume":"1 1","pages":""},"PeriodicalIF":3.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}