Regional Studies in Marine Science最新文献

{"title":"Corrigendum to “Stakeholders’ perceptions of feasibility of Fishery Refuge Zone implementation in Campeche, Southern Gulf of Mexico” [Reg. Stud. Mar. Sci. 90 (2025) 1–13]","authors":"José Manuel Dorantes-Hernández , Hem Nalini Morzaria-Luna , Juan Carlos Pérez-Jiménez , Eva Virginia Coronado-Castro , Dolores Molina-Rosales","doi":"10.1016/j.rsma.2025.104484","DOIUrl":"10.1016/j.rsma.2025.104484","url":null,"abstract":"","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104484"},"PeriodicalIF":2.4,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"A marine soundscape anthropause: Covid-19 lockdown impacts on soundscape composition, vessel traffic, and dolphin acoustic presence in Port Phillip Bay","authors":"Amber Crittenden ,&nbsp;Kate Robb ,&nbsp;Christine Erbe","doi":"10.1016/j.rsma.2025.104486","DOIUrl":"10.1016/j.rsma.2025.104486","url":null,"abstract":"<div><div>Marine soundscapes and the sound-reliant species within them experience growing anthropophony with the progression of the Anthropocene epoch. The ‘natural experiment’ presented by the anthropause during Covid-19 pandemic-related lockdowns provided an opportunity to study animals in less disturbed soundscapes. Metropolitan Melbourne, Victoria, Australia, situated in northern Port Phillip Bay (PPB), experienced one of the longest lockdown periods globally. PPB holds Australia's busiest shipping ports and hosts one of only two known resident populations of the critically endangered Burrunan dolphin (<em>Tursiops australis</em>). Passive acoustic monitoring (PAM) was undertaken at two PPB locations, characterising the marine soundscape and assessing vessel and dolphin acoustic presence across various temporal scales throughout the pandemic. A total of 21,766 5-min audio files were collected across 310 days during four periods: pre-pandemic, low-restriction lockdown, high-restriction lockdown, and easing of restrictions. Soundscape analysis revealed several key sound sources, with a simplification in soundscape composition during strict lockdown. Small-vessel acoustic presence increased during initial lockdown, then significantly reduced during strict lockdown, accompanied by a shift to nighttime boating. Large-vessel acoustic presence reduced slightly during initial restrictions and resumed post-lockdown, though no significant variation was detected. Dolphin acoustic presence did not vary significantly, though mean daily presence was slightly higher during initial lockdown in the North while diel cycle variation was seen in the South, suggesting distributional drivers with greater significance than the presence of anthropophony exist within PPB. This study, the first of its kind in PPB, provides valuable insights into marine soundscape composition and the use of PAM for dolphin distribution and presence assessments. Ongoing research, including comprehensive soundscape characterisation and long-term dolphin distribution, will further assess anthropophonic effects on the Burrunan dolphin to inform conservation efforts.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104486"},"PeriodicalIF":2.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Evaluating island evolution and shoreline dynamics for better community resilience: An example from a tropical island in the face of the Bay of Bengal","authors":"Aznarul Islam ,&nbsp;Jasmin Khatun ,&nbsp;Biplab Sarkar ,&nbsp;Sekh Mohinuddin ,&nbsp;Soumita Sengupta ,&nbsp;Subodh Chandra Pal ,&nbsp;Abu Reza Md Towfiqul Islam","doi":"10.1016/j.rsma.2025.104483","DOIUrl":"10.1016/j.rsma.2025.104483","url":null,"abstract":"<div><div>This paper shows the evolution of Nayachar, a newly emerged island in the face of the Bay of Bengal, focusing on its morphogenetic changes and their implications for the evolution of the settlements and population growth. Nayachar Island was first discovered in the 1930s and has since been shaped by continuous accretion and erosion processes. Leveraging the Landsat data (1988–2024) and utilizing the digital shoreline analysis system (DSAS) tool, we found that Nayachar Island experienced significant sediment accretion, particularly in the northern and southern areas, with a total growth of 11.12 km². The left bank exhibited a positive long-term rate of change, while the right bank showed significant erosion, highlighting the dynamic nature of the shoreline. Erosion and changing shoreline dynamics threaten local fisheries, which are vital for the livelihoods of many residents, leading to economic vulnerability as evidenced by the field survey data (2024). Most importantly, the settlement phases depict a unique pattern characterized by the co-evolution of the settlements and island expansion till the chemical hub for Nayachar was announced in 2007. Depopulation started thereafter in Nayachar despite a steady increase in the island area. This demonstrates that emerging land certainly attracts people to settle, but the infrastructural and administrative support and services are essential for the growth and development of the settlements against the fluctuating sea levels, cyclonic impacts, high sedimentation rates, and tidal activities. The study provides a framework for adaptive management strategies in similar deltaic environments.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104483"},"PeriodicalIF":2.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"First assessment of heavy metals contamination and human health risk in Chelon auratus (Risso, 1810) from Tunisian aquatic ecosystems: Case of Bizerte Lagoon and Ghar El Melh Lagoon (Ramsar site)","authors":"Walid Ben Ameur ,&nbsp;Ali Annabi ,&nbsp;Saida Lahmar ,&nbsp;Mauro Marini","doi":"10.1016/j.rsma.2025.104472","DOIUrl":"10.1016/j.rsma.2025.104472","url":null,"abstract":"<div><div>In this study, the concentrations of heavy metals (Cu, Zn, Pb, and Cd) were measured in the liver and muscle of golden grey mullet (<em>C. auratus</em>) collected from the lagoons of Bizerte and Ghar El Melh. A total of 30 fish samples from each lagoon were collected. Mean concentrations of Cd, Cu, and Zn varied between lagoons and tissues, with Cd levels ranging from 0.95 to 3.18 mg/kg dry weight, Cu detected only in liver reaching up to 477.66 mg/kg, and Zn ranging from 6.91 to 188.29 mg/kg, generally higher in liver than muscle and higher in Ghar El Melh Lagoon compared to Bizerte Lagoon. The results showed that Pb was not detected in any of the samples analyzed. Zn and Cu exhibited the highest concentrations, particularly in liver tissues. In Bizerte Lagoon, mean liver concentrations were 139.60 ± 24.18 µg/g dw for Zn and 477.66 ± 41.06 µg/g dw for Cu, while in Ghar El Melh Lagoon, they were 188.29 ± 31.75 µg/g dw (Zn) and 181.91 ± 36.50 µg/g dw (Cu). The metal pollution index (PI) calculated for muscle tissue indicated moderate cadmium contamination in Bizerte Lagoon (PI = 0.95) and severe contamination in Ghar El Melh Lagoon (PI = 1.46). In contrast, zinc contamination was low in both lagoons (PI = 0.29 and 0.07, respectively). Based on the measured concentrations, comparison with international food safety standards, and human health risk parameters, <em>C. auratus</em> muscle appears to be generally safe for human consumption. However, most metal levels in muscle tissue, the edible part, remain below international safety limits, the presence of cadmium near or above quantification thresholds in some samples raises concern for long-term exposure through fish consumption. From an environmental perspective, elevated Cd levels, particularly in liver tissues, reflect persistent contamination and pose a serious threat to fish health. Moreover, its bioaccumulative nature can disturb the aquatic food web by transferring toxicity across trophic levels. These findings underline the urgent need for continued monitoring, pollution control, and conservation measures to protect both ecosystem integrity and public health.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104472"},"PeriodicalIF":2.4,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145060455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Macro debris accumulation in seagrass meadows along varying levels of tourism pressure in Bali, Indonesia","authors":"Putu Satya Pratama Atmaja ,&nbsp;A A Md Ananda Putra Suardana ,&nbsp;I. Ketut Aditya Krisna Laharjana ,&nbsp;Yulianto Suteja ,&nbsp;Anna Ida Sunaryo Purwiyanto","doi":"10.1016/j.rsma.2025.104482","DOIUrl":"10.1016/j.rsma.2025.104482","url":null,"abstract":"<div><div>Seagrass meadows plays a vital role in tropical coastal ecosystems, however their dense canopy structure also enables them to trap marine debris, making them particularly vulnerable to pollution, especially in areas with high tourism pressure. Despite this, limited studies have evaluated macro debris accumulation in seagrass habitats across varying levels of human activity. This study aimed to assessed and examined the macro debris pollution on seagrass meadows across different tourism pressure in Bali, Indonesia. The sampling sites were categorized into low, intermediate, and high tourism intensity levels based on the number of visitors and human activities. Debris was collected using a transect-quadrat method and analysed by type, composition, and condition (whole vs. fragment). Environmental quality was assessed using the Clean Coast Index (CCI), Hazardous Anthropogenic Litter Index (HALI), and Plastic Abundance Index (PAI). A Kruskal-Wallis test confirmed statistically significant differences in macro debris density among the impact zones (p = 0.001), demonstrating that tourism intensity strongly affects debris accumulation. High-impact areas such as Sindhu and Semawang recorded the highest debris densities (mean 0.304 items/m²), dominated by consumer-related plastics and fishing waste. In contrast, low-impact zones showed more fragmented plastics, suggesting older, transported debris The CCI, HALI, and PAI indices aligned with tourism intensity, reflecting dirtier, hazardous debris, and higher plastic in high-impact sites. Seagrass species with dense canopies, such as <em>Thalassia hemprichii</em> and <em>Syringodium isoetifolium</em>, retained more debris. These findings emphasize and highlight the need for integrated waste management and conservation strategies to protect coastal ecosystems from escalating plastic pollution.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104482"},"PeriodicalIF":2.4,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Temporal dietary shifts in California sea lions at Los Islotes colony, Gulf of California","authors":"Brenda N. Mejía-Guarnizo ,&nbsp;Arelly Ornelas-Vargas ,&nbsp;Francisco J. García-Rodríguez ,&nbsp;Fernando R. Elorriaga-Verplancken ,&nbsp;Fausto Valenzuela-Quiñonez ,&nbsp;Tania Zenteno-Savín ,&nbsp;Daniela A. Murillo-Cisneros ,&nbsp;Claudia J. Hernández-Camacho","doi":"10.1016/j.rsma.2025.104479","DOIUrl":"10.1016/j.rsma.2025.104479","url":null,"abstract":"<div><div>Studying the diet of the California sea lion (<em>Zalophus californianus</em>, CSL) provides information about its role as a biological indicator of ecosystem stability. The CSL breeding colony of Los Islotes, Gulf of California, is the only one in Mexico to increase its abundance in decades. However, beginning in 2015, colony size stabilized for a few years, resuming growth in 2020. These changes may be associated with variations in prey availability influenced by sea surface temperature (SST) anomalies in the area. CSL diet in this colony was evaluated from fecal samples and related to SST anomalies in the area. We identified more than 1400 fish otoliths from 229 samples obtained between 2015 and 2022. Prey importance (IIMP% index) and ecological and trophic indices were calculated. Diet structure was compared over time through multivariate analysis. From the SST anomalies, the climatic regimes in recent years were calculated. We assessed how these anomalies are associated with calculated indices through cross-correlations. Fish (n = 79) and cephalopod (n = 3) species were identified, including new species of commercial interest in the area. Few prey items had an importance index higher than 5 %; thus, we classified CSL from Los Islotes as plastic specialist. Individual specialization in diet was also observed. Dietary variation was not seasonal but annual, and cross-correlations showed a significant relationship between SST anomalies and ecological–trophic indices. A change in the composition and structure of the diet for CSL in Los Islotes has been observed since 2015 compared to previous decades.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104479"},"PeriodicalIF":2.4,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 carbon sequestration potential by mangroves in a coastal metropolitan region","authors":"Carlos H. de Andrade ,&nbsp;Micheli Duarte de Paula Costa ,&nbsp;Débora M. de Freitas","doi":"10.1016/j.rsma.2025.104478","DOIUrl":"10.1016/j.rsma.2025.104478","url":null,"abstract":"<div><div>Coastal blue carbon refers to the carbon stored in coastal ecosystems such as mangroves, which sequester up to 40 times more carbon than terrestrial ecosystems. These ecosystems are crucial for climate mitigation but are often degraded by human activities, releasing stored carbon and increasing greenhouse gas emissions. One of the factors contributing to this degradation includes stilts houses built in flooded areas found in Brazilian territories, such as in the Baixada Santista Metropolitan Region. This study aimed to model and assess the potential spatiotemporal dynamics of carbon sequestration by mangroves in a coastal metropolitan region. Using the InVEST Coastal Blue Carbon model, we simulated three hypothetical management scenarios: conservation, restoration, and conversion. Land use and land cover maps (1991–2021) from MapBiomas were used as input data for the InVEST model. QGIS was used to apply the scenarios, with the conversion scenario expanding areas of stilt houses and the restoration scenario replacing stilt house areas in the region with mangroves. In the conservation scenario, no spatial edits were applied, and it was assumed that mangrove areas remained unchanged from the 2021 map onward. Under restoration, mangroves could sequester an additional 1300,000 tonnes of CO₂e over 50 years. conversion could lead to emissions that are approximately 2.03 times higher than those projected under the conservation scenario. Overall, our results can support local policies that promote conservation and restoration as nature-based solutions for climate change, while enhancing biodiversity, ecological functions, and the economic value of mangroves.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104478"},"PeriodicalIF":2.4,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Nutrient limitation during anomalously warm periods in the southwestern Gulf of California, Mexico","authors":"Rafael Cervantes-Duarte ,&nbsp;Eduardo González-Rodríguez ,&nbsp;Jaime Gómez-Gutiérrez ,&nbsp;Juan David Acevedo-Acosta ,&nbsp;Liesvy Valladares-Alfonso ,&nbsp;Luis Ricardo Amaro-Sánchez","doi":"10.1016/j.rsma.2025.104475","DOIUrl":"10.1016/j.rsma.2025.104475","url":null,"abstract":"<div><div>The highest average temperatures of the world’s oceans were recorded between June and August in both 2023 and 2024. These thermal shifts disrupt marine ecosystems by altering the physical and chemical properties of the seawater column. Organisms with limited vertical mobility, such as phytoplankton, are especially impacted by these sea warming events. A monthly time series was conducted to examine changes in nutrients (nitrate, phosphate, silicate), dissolved oxygen, chlorophyll-<em>a,</em> and satellite-derived Gross Primary Production (GPP) associated with hydrographic variability from 2021 to 2023 in Alfonso Basin (Bahía de La Paz, Mexico). The Gulf of California Water (GCW) and the Subtropical Subsurface Water (SSW) were recorded during the cold season (December-May) and two additional seawater masses, the Tropical Surface Water (TSW) and evaporated Tropical Surface Water (eTSW), were identified during the warm season (July-November). A deeper mixed layer prevailed during the cold season, increasing the availability of SSW nutrients that increased GPP. Nutrient-poor sea water masses (GCW, TSW, eTSW) showed sign of stratification and low GPP during the warm season. Our observations, like previous regional studies, provide evidence that nutrient concentrations consistently decreased during the warm season and during prolonged anomalously warm events occurred during El Niño (June-December 2023). A 2000–2023 monthly satellite time series of sea surface temperature (SST), GPP, and the Multivariate El Niño index version 2 (MEI.v2) additionally showed periods with low GPP associated with anomalously warm periods such as marine heat waves (MHW) and five El Niño events (2002–2003, 2006–2007, 2009–2010, 2015–2016, 2023–2024). A wavelet coherence analysis of GPP as a function of wind speed for the period 2000–2023 revealed coherent patterns at seasonal and interannual scales, indicating that variations in GPP are closely linked to wind-driven processes. The results highlight the role of wind forcing as a key driver of primary production variability in the study region. Anomalous warm events and low wind speed promote the stratification processes that decrease the supply of nutrients and GPP into the euphotic zone of this deep subtropical bay.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104475"},"PeriodicalIF":2.4,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145044080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"An Integrated assessment of naturally occurring radionuclides in a coastal tropical shrimp farm ecosystem: Environmental distribution and potential implications","authors":"Jade Guimarães Gomes dos Santos ,&nbsp;Rafael Reis Cabral ,&nbsp;José Marques Lopes ,&nbsp;Gisele Mara Hadlich ,&nbsp;Alexandre Barreto Costa ,&nbsp;Maria do Rosário Zucchi","doi":"10.1016/j.rsma.2025.104471","DOIUrl":"10.1016/j.rsma.2025.104471","url":null,"abstract":"<div><div>This study assessed the activity concentrations of K-40, Ra-226, and Ra-228 in bottom sediment, shrimp, mussels, and water from a shrimp farm pond to evaluate potential radiological impacts. Activity concentrations were measured using High-Purity Germanium (HPGe) detectors and IAEA-certified standards. The results indicate that the concentrations are generally consistent with values reported in the literature, except for Ra-226 levels in some matrices, which were slightly higher than previously observed under different conditions. The ERICA Tool was applied to estimate dose rates for non-human biota, showing that most values were within the Derived Consideration Reference Levels, although those for phytoplankton exceeded these thresholds. Effective dose and excess lifetime cancer risk estimates were also performed for shrimp, mussel, and fish consumption. While doses remained below reference levels, the associated morbidity and mortality risks fell within the decision-making range established by the US EPA. This study highlights the lack of data on radionuclide dynamics in aquaculture environments and suggests that current shrimp farming practices do not pose immediate radiological risks. The findings contribute to a better understanding of radionuclide behavior in shrimp farming systems and support informed decision-making in environmental management.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104471"},"PeriodicalIF":2.4,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145026939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Advanced modelling for team collaborative decision making analysis on maritime autonomous surface ships using team cognitive work analysis","authors":"Juncheng Tao ,&nbsp;Zhengjiang Liu ,&nbsp;Xinjian Wang ,&nbsp;Yuhao Cao ,&nbsp;Christian Matthews ,&nbsp;Zaili Yang","doi":"10.1016/j.rsma.2025.104477","DOIUrl":"10.1016/j.rsma.2025.104477","url":null,"abstract":"<div><div>The emerging Maritime Autonomous Surface Ships (MASS) significantly challenges team collaboration in the maritime sector. Although significant progress has been made, current research lacks a holistic analytical approach to MASS operational teams, with most studies focusing on isolated aspects. To address this gap, a two-step framework is developed to model and analyse MASS team tasks from a system-wide perspective. Firstly, a team cognitive work analysis and an improved hierarchical task analysis are conducted, clarifying the division of responsibilities and information transmission paths. Secondly, a task network is constructed using complex network theory, and key topological characteristics are extracted. Thirdly, eight types of node importance ranking methods are employed, including three based on individual indicators and five based on hybrid algorithms, along with robustness analysis based on deliberate attacks to quantitatively identify critical nodes from different perspectives and analyse their roles in team tasks. Finally, Boolean algebra is applied to integrate the results of the node rankings, and a susceptible infected model is utilised to validate the validity of ranking results, allowing for prioritisation of critical nodes. The results demonstrate that targeted attacks based on betweenness centrality cause the network to collapse rapidly, with reachability dropping sharply once 16.7 % nodes fail. The entire system becomes nearly non-functional when 54.2 % nodes fail. The decline in reachability slows after 25 % nodes fail, indicating diminishing marginal impact. This study contributes to the development of a holistic framework for analysing team tasks of MASS, with future work exploring dynamic modelling and weighted interdependencies across broader maritime scenarios.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"90 ","pages":"Article 104477"},"PeriodicalIF":2.4,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145018419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}