Journal of Sea Research最新文献

{"title":"Dynamic ecological compensation and delayed strategies in China's coordinated land-sea governance: An evolutionary game analysis","authors":"An Yan ,&nbsp;Hu Tian ,&nbsp;Qiaorong Yin ,&nbsp;Xin Ding","doi":"10.1016/j.seares.2025.102660","DOIUrl":"10.1016/j.seares.2025.102660","url":null,"abstract":"<div><div>China's coastal marine ecosystems face severe challenges, including fragmented governance and cross-regional externalities. This makes it urgent to establish an integrated and efficient land-sea coordinated governance system. This study explores ecological compensation as a strategic entry point and develops four evolutionary game models: a model under static strategy, a model under dynamic vertical ecological compensation, a model under dynamic horizontal ecological compensation, and a time-delay effect model. Parameter settings are partly based on typical Chinese cases and partly on expert judgment and literature references, with corresponding numerical simulations. The research conclusions are as follows. (1) The regulatory returns obtained by higher-level governments are a decisive factor influencing whether the system evolves toward a stable and coordinated governance equilibrium. (2) The vertical ecological compensation amount should remain within an appropriate range, whereas increasing the penalty intensity can further enhance system stability. The horizontal ecological compensation mechanism strengthens local governments' motivation for active governance and alleviates the regulatory pressure on higher-level governments within the simulated framework. (3) In terms of policy implementation, the dynamic vertical ecological compensation strategy facilitates the system's convergence toward an optimal evolutionary equilibrium, whereas the dynamic horizontal ecological compensation strategy exerts a comparatively weaker stabilizing effect. (4) Introducing time-delay effects enhances system stability and shows stronger convergence than the dynamic vertical ecological compensation strategy, particularly when higher-level governments respond after local ones. This study provides theoretical support for ecological governance strategies in China's coastal waters under land-sea integrated management.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"209 ","pages":"Article 102660"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145791325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The molecularly and visually identified prey of fish in Dutch salt marshes","authors":"Hannah Charan-Dixon ,&nbsp;Patricia S. Lamker ,&nbsp;Annika S. Arvin-Blaauw ,&nbsp;Fetuao Nokise ,&nbsp;Jolanda K. Brons ,&nbsp;Ann-Christin Ziebell ,&nbsp;Margot A.M. Maathuis ,&nbsp;Ingrid Tulp ,&nbsp;Britas Klemens Eriksson","doi":"10.1016/j.seares.2025.102634","DOIUrl":"10.1016/j.seares.2025.102634","url":null,"abstract":"<div><div>Coastal marshes are an important habitat for many juvenile and small fishes, providing refuge and feeding opportunities. Understanding their diets can reveal more about the food web and the underlying factors impacting fish in these threatened habitats. We compared the diets of common goby (<em>Pomatoschistus microps</em>), three-spined stickleback (<em>Gasterosteus aculeatus</em>), Atlantic herring (<em>Clupea harengus</em>), European flounder (<em>Platichthys flesus</em>), European seabass (<em>Dicentrarchus labrax</em>), and European smelt (<em>Osmerus eperlanus</em>). These fish were collected seasonally from Dutch Wadden Sea salt marshes using fyke nets set at fixed stations from three locations with varying degrees of habitat modification. Comparing visual identification and DNA metabarcoding (CO1 region) of stomach contents revealed that DNA (relative read abundance) could be used semi-quantitatively for the dominant prey classes, but failed to detect some prey groups identified visually. The dominant prey of most fish species were the harpacticoid copepod <em>Tachidius discipes</em>, the amphipod <em>Corophium volutator</em>, and other crustaceans including <em>Crangon crangon</em> and <em>Neomysis integer.</em> Diets were affected by season, abiotic conditions, predator length, sampling location, and predator species. Gobies and stickleback shared similar diets, while the four other species displayed distinct diets. Flounder diets were characterised by benthic prey, herring diets consisted predominantly of copepods, smelt were generalists, while seabass diets predominantly contained Malacostraca. Fish diets at the least modified sampling location exhibited the greatest prey diversity. Our findings indicate that salt marshes provide a feeding habitat for the resident and migrant fish species studied, where the degree of marsh habitat modification may affect the marine food web.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102634"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Competent larval behaviour and settlement responses to adult conspecific cues of the horse mussels Modiolus modiolus and Modiolula phaseolina (Mytiloidea)","authors":"Grete E. Dinesen ,&nbsp;Kurt W. Ockelmann ,&nbsp;Anders Nielsen","doi":"10.1016/j.seares.2025.102640","DOIUrl":"10.1016/j.seares.2025.102640","url":null,"abstract":"<div><div>Larval settlement in response to conspecific adult pheromonal cues guides population connectivity and recruitment in many benthic invertebrates. However, evidence for this mechanism in bivalves, except for oysters and dreissenids, is limited. The evolution of such functional behaviour would have strengthened formation and maintenance of marine mussel aggregations of which several species and habitats are now considered threatened and in need of restoration. The two modioline bivalves, <em>Modiolus modiolus</em> and <em>Modiolula phaseolina</em>, form biogenic habitats in the subtidal. Experiments were conducted in vitro to test competent larval phototaxis, sinking rates, swimming behaviour and settlement responses to conspecific adult conditioned seawater (ACS) with pheromonal cues. Larvae of both species were maintained in ambient, aged seawater (ASW). Prior to settlement, the larvae became photonegative. <em>Modiolus modiolus</em> larvae sinking rates varied between 4.75 and 6.75 mm sec⁻¹, depending on larval size and seawater temperature. Competent pediveliger larvae initially required higher concentrations of ACS to induce settlement completed by metamorphosis. The odds of larval settlement were 8 to 85 times higher with exposure to higher ACS concentrations compared to lower concentrations or absence of ACS. Low concentrations of ACS altered larval swimming behaviour but did not induce settlement completed by metamorphosis, and this is thus a threshold response. This first documentation of mytiloidean larval settlement in response to conspecific adult pheromonal cues, may play an integral role in the metapopulation dynamics of these species. Population declines could weaken plumes of pheromonal cues excreated from adults and, thereby, larval settlement and recruitment. This may explain, in part, the low recoverability of previously long-standing <em>M. modiolus</em> habitats after cessation of anthropogenic physical disturbance, such as bottom trawling. Application of these results may enable high metamorphosis and juvenile survival rates in aquaculture production and guide restocking efforts to enhance in situ recruitment and, thereby, support horse mussel habitat restoration in coastal waters.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102640"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145519702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laying out the foundations: Assessing the spatial extent and drivers of offshore wind turbine artificial reef effects on soft sediments","authors":"Nene Lefaible ,&nbsp;Carl Van Colen ,&nbsp;Christelle Jammar ,&nbsp;Jan Vanaverbeke ,&nbsp;Tom Moens ,&nbsp;Sven Van Haelst ,&nbsp;Alain Norro ,&nbsp;Steven Degraer ,&nbsp;Ulrike Braeckman","doi":"10.1016/j.seares.2025.102631","DOIUrl":"10.1016/j.seares.2025.102631","url":null,"abstract":"<div><div>With the rapid expansion of offshore energy, numerous artificial structures are being installed on the seabed, including wind turbine foundations. This study investigates the “artificial reef” (AR) effect of bottom-fixed offshore wind farms (OWFs) on soft sediment benthic communities. While previous studies have focused on distances ≥30 m from turbines, in this study, sediment and macrobenthic samples were collected at shorter distances (1 m, 7 m, 15 m and 25 m) from the scour protection layer (SPL) around a monopile and a gravity-based foundation in two Belgian OWFs, 10–13 years post-installation. Results show a localized AR footprint for both turbine foundations, with enriched benthic communities within 15 m of the SPL. In comparison to communities 25 m distanced away from the SPL, a higher average species richness (+100 %), abundance (+117 %), functional richness (+438 %), and bioturbation potential (+86 %) was prevalent, whereas the magnitude of enriched structural and functional diversity in the footprint varied respectively between 16 and 80 % and 15–110 % depending on the OWF. Beyond the AR footprint, communities resembled those at reference sites (240–570 m), with less surface dwellers, suspension feeders and a prevalence of burrowing biodiffusors that contribute little to bioturbation. While the AR effect's magnitude depends on local conditions and foundation design, our trait-based analysis indicates that sediment fining, biofouling drop-offs and organic enrichment are consistent drivers shaping the AR footprint.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102631"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing foraminiferal diversity in Laizhou Bay, Bohai Sea: Insights from eDNA metabarcoding","authors":"Qingxia Li ,&nbsp;Zhonghua Ren ,&nbsp;Yanli Lei ,&nbsp;Qingyuan Hu ,&nbsp;Shuaishuai Dong ,&nbsp;Junfeng Shi","doi":"10.1016/j.seares.2025.102638","DOIUrl":"10.1016/j.seares.2025.102638","url":null,"abstract":"<div><div>As a coastal semi-enclosed bay, Laizhou Bay has experienced significant ecological impacts due to intensified human influence. Benthic foraminifera, known for their sensitivity to environmental change, serve as excellent bioindicators for monitoring marine pollution and assessing ecological disturbances. In this study, we collected sediment samples from nineteen sites in Laizhou Bay, at water depths ranging from 3.76 to 16.88 m, and assessed foraminiferal diversity using eDNA metabarcoding. A total of 75 foraminiferal species were identified, nearly double the number reported in previous morphology-based studies. Among the 712 operational taxonomic units (OTUs) detected, 416 (∼58 % of the total) were classified as soft-shelled monothalamiids, which represented the highest proportion of OTUs across all sampling sites. This finding contrasts sharply with morphological surveys, which have typically reported multi-chambered hyaline taxa as the dominant component of benthic foraminifera in Laizhou Bay. The lack of significant Spearman correlations between alpha diversity and individual environmental parameters (depth, temperature, salinity, pH) suggested that foraminiferal diversity in this dynamic coastal setting was not governed by a single dominant factor. This implies that the community structure is more likely a result of the complex interplay of multiple environmental stressors and/or biological interactions. Furthermore, we used PICRUSt2 to predict metabolic functions of the benthic foraminiferal community, providing initial insights into its potential ecological roles. This study reveals the community structure and functional diversity of benthic foraminifera in Laizhou Bay and highlights the utility of eDNA metabarcoding as a highly sensitive tool in foraminiferal ecology.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102638"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145466397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inventory of the biofouling community on the first offshore solar energy farm in the North Sea","authors":"Ninon Mavraki ,&nbsp;Oscar G. Bos ,&nbsp;Babeth van der Weide ,&nbsp;Oliver Bittner ,&nbsp;Brigitte M. Vlaswinkel ,&nbsp;Melina Nalmpanti ,&nbsp;Joop W.P. Coolen","doi":"10.1016/j.seares.2025.102627","DOIUrl":"10.1016/j.seares.2025.102627","url":null,"abstract":"<div><div>Offshore renewable energy is rapidly expanding in the North Sea. Offshore solar is a new renewable energy technology currently developing in the Netherlands, with the first offshore tests of four years at rough conditions being successfully completed. Submerged parts of offshore renewable energy devices get fully colonised by fouling organisms, which take advantage of the new artificial habitats. In this study, we conducted an exploration of the fouling fauna that colonised the floaters of a solar farm installed for the first time in offshore waters in the Netherlands. The biofouling attached to the underwater parts of 18 floaters forming 3 clusters were sampled in a quantitative way by scuba divers. Macrofauna species and biomass were quantified in all samples. In total, 47 different taxa, including 12 non-indigenous species, were identified to occur on the floaters. Arthropoda (mainly individuals of the genus <em>Jassa</em>) was the most abundant phylum, while Mollusca (mainly blue mussel <em>Mytilus edulis</em>) showed the largest biomass. No significant differences in abundance nor biomass were observed between the two months of installation. Non-indigenous species were more abundant in number but contributed less to the total biomass compared to native species on the examined floaters, regardless of the month they were installed. The findings of this study suggest that, like any offshore artificial structure, offshore solar farms could act as stepping-stones for the spread of species. However, long-term monitoring is needed to confirm these results and gain a more comprehensive understanding of the development of fouling fauna on offshore solar farms.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102627"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145050277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First large-scale abundance estimates of fin whales (Balaenoptera physalus) in the North Pacific: Implications for management","authors":"Megumi Takahashi,&nbsp;Koji Matsuoka,&nbsp;Takashi Hakamada","doi":"10.1016/j.seares.2025.102647","DOIUrl":"10.1016/j.seares.2025.102647","url":null,"abstract":"<div><div>The fin whale (<em>Balaenoptera physalus</em>) was exploited by global commercial whaling well beyond sustainable population levels in most regions since the early 1870s. In the post-whaling era, fin whale populations in several regions may have stabilized or begun recovering from historical depletion. However, large-scale abundance information has remained limited owing to the high operating costs of surveys and the challenges of international cooperation. We report the first large-scale abundance estimates for the entire North Pacific during the boreal summer (July to September) using vessel-based line transect sighting data collected through long-term domestic and international research programs over two periods: 2008–2014 and 2017–2022. During the second period, the survey area included the Bering Sea. Assuming a detection probability on the trackline <em>g</em>(0) of 1, the abundance estimates were 6,633 (CV = 0.453) and 31,835 (CV = 0.264) individuals for the western and eastern North Pacific, respectively, in the first period; and 4,405 (CV = 0.241), 37,297 (CV = 0.181), and 9,885 (CV = 0.201) for the western and eastern North Pacific and Bering Sea, respectively, in the second period. Considering g(0) corrections, the corrected abundance estimates for the entire North Pacific were 44,523 (CV = 0.234) and 45,344 (CV = 0.167) in the first and second periods, respectively. For the Bering Sea, the estimate was 10,234 (CV = 0.202) in the second period. These new estimates are available for the conservation and management purposes of this species in the North Pacific.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102647"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent distribution and population structure of the ocean quahog, Arctica islandica (Linnaeus, 1767), in the German waters of the Baltic Sea – Ecological insights and relevance for conservation","authors":"Louisa Alina Schulz,&nbsp;Mayya Gogina ,&nbsp;René Friedland ,&nbsp;Fabian Wolf ,&nbsp;Katharina Kniesz ,&nbsp;Michael Lothar Zettler","doi":"10.1016/j.seares.2025.102630","DOIUrl":"10.1016/j.seares.2025.102630","url":null,"abstract":"<div><div><em>Arctica islandica,</em> a long-lived bivalve species, reaches its southern distribution limit in the Baltic Sea, where it plays a key role in benthic ecosystem functioning. In this region, the species is listed as vulnerable, and its main associated biotope holds critically endangered status. Despite its ecological importance, current knowledge of its distribution and population structure in this marginal environment has remained limited.</div><div>This study presents the most comprehensive assessment to date of <em>A. islandica</em> in the German waters of the Baltic Sea, integrating species distribution modelling (SDM) with empirical data on population structure. Using Random Forest algorithms and benthic survey data collected between 2015 and 2024, we mapped spatial patterns of abundance and biomass and analysed size-frequency distributions to assess demographic trends.</div><div><em>Arctica islandica</em> was primarily found in fine sediments below the halocline in the central Kiel Bay and the Bay of Mecklenburg, and was absent from shallower coastal zones (&lt;10 m). The recorded maximum shell length of 82.5 mm was smaller than in Atlantic populations, likely due to the brackish conditions. Size-frequency data indicated recent recruitment events alongside high early-life mortality. While the Baltic Sea population appears broadly stable, regional shifts were evident – for example, increased stock biomass in the Arkona Basin but also a population decline in Lübeck Bay.</div><div>In the Baltic Sea, <em>A. islandica</em> lives near its physiological tolerance limits, making it particularly susceptible to anthropogenic impacts and climate-driven environmental change. Population hotspots within the Marine Protected Area “Fehmarn Belt” were identified as conservation priorities, supporting both species protection and ecosystem functioning. More broadly, this study demonstrates the utility of SDM in supporting evidence-based marine spatial planning and targeted environmental management.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102630"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploration of enigmatic pelagic larval oysters (Crassostrea virginica) fostering estuarine restoration of oyster fisheries","authors":"Hui Liu ,&nbsp;Bailey Lin ,&nbsp;Christine C. Jensen ,&nbsp;Jaime R. Alvarado-Bremer ,&nbsp;Hongsheng Bi ,&nbsp;Zhixuan Song ,&nbsp;Chengxue Li ,&nbsp;Xinping Hu","doi":"10.1016/j.seares.2025.102628","DOIUrl":"10.1016/j.seares.2025.102628","url":null,"abstract":"<div><div>Dramatic declines in oyster reefs in estuarine ecosystems have drawn considerable attention to oyster restoration; however, most efforts so far have primarily targeted their benthic phase leaving the pelagic oyster larvae largely elusive. In this study, the density, distribution, and size-structure of pelagic larval oysters (<em>Crassostrea virginica</em>) were studied in a subtropical estuary (Galveston Bay, Texas, USA) during the oyster spawning season (May–October) in 2023 and 2024 to assess the impact of environmental conditions on larval dynamics and recruitment. Except for relatively similar thermal conditions, salinity and chlorophyll <em>a</em> (Chl-<em>a</em>) were significantly different between the two years with extremely low salinities observed in May and June of 2024. Larval density was significantly related to sites and months, with relatively lower densities observed at 9 of 11 sites and 4 of 6 months in 2024 compared to 2023. Size structures of pelagic larvae exhibited significant differences between the early-middle (May–August) and late (September–October) spawning periods, with abundant small-sized individuals (70–200 μm) gradually shifting to less abundant large-sized individuals (&gt;250 μm). A breakdown of the life stages showed higher percentages of Stages 1&amp;2 and lower percentages of Stage 5 over the two spawning seasons. Salinity was the most important environmental factor influencing the larval density followed by its interaction with water temperature, water temperature and Chl-<em>a</em>. Geostatistical co-kriging analysis disclosed relatively high larval density in the upper bay, East Bay, and West Bay in 2023, while in 2024 higher density was found along the western shoreline down to West Bay. Early-stage larvae appeared denser in the lower bay compared to the middle bay and upper bay in 2023, whereas abundant late-stage larvae emerged in the lower bay in 2023. In the northern inshore zone, denser early-stage larvae occurred in 2024, meanwhile late-stage larvae appeared relatively abundant, especially in the northwest and southwest regions. Finding areas with higher densities of early- and late-stage pelagic oyster larvae may help identify larval sources and sinks. These insights can better inform the strategic placement of oyster sanctuaries and enhance the effectiveness of restoration and management efforts for this economically and ecologically important marine living resource.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102628"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling deepwater oil blowouts at different depths: A coupled experimental and modeling study","authors":"Qin Xin ,&nbsp;Zhaoyang Yang ,&nbsp;Zhi Chen ,&nbsp;Kenneth Lee","doi":"10.1016/j.seares.2025.102637","DOIUrl":"10.1016/j.seares.2025.102637","url":null,"abstract":"<div><div>Recent offshore oil spill incidents have raised public concern over subsea blowouts in oil and gas operations. To improve and validate the accuracy of current oil spill models the scientific community has identified the need for additional experimental data under deepwater environmental conditions. This study intends to address this challenge through laboratory experiments simulating oil blowouts under various high-pressure subsea conditions. Results of critical constituents such as benzene, toluene, ethylbenzene, and xylenes (BTEX), total polycyclic aromatic hydrocarbons (PAHs), and total oil content in water columns improved our understanding of the chemical composition of deepwater oil spills. Microscopy analysis revealed that most oil droplets suspended in the water had diameters of less than 20 μm, constituting over 98 % of the total extractable oil mass. Dissolved BTEX and total PAHs accounted for less than 2 % of the total extractable oil. Our findings showed that as the blowout depth increased, the resulting oil concentration in water also increased. Water temperature and pressure significantly affected the retention of small oil droplets in the water at near-blowout locations. These results provide key insights into deepwater oil behavior and offer valuable data for testing and validation of developed and developing oil spill models.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102637"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145363571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}