Regional Studies in Marine Science最新文献

{"title":"New geochemical and mineralogical data of Ogasawara phosphorites (northwestern Pacific)","authors":"V.V. Sattarova ,&nbsp;Yu.G. Volokhin ,&nbsp;I.S. Kirichenko ,&nbsp;N.V. Zarubina","doi":"10.1016/j.rsma.2025.104101","DOIUrl":"10.1016/j.rsma.2025.104101","url":null,"abstract":"<div><div>A mineralogical and geochemical study of five phosphorite samples from the Ogasawara submarine plateau (Northwest Pacific) was performed using optical and scanning electron microscopy (SEM), X-ray diffraction analysis, and inductively coupled plasma spectrometry equipped with microanalysis systems. The total rare-earth elements (REE) content varied from 94 to 183 ppm, with an average of 145 ppm. Their distribution, distinct negative Ce anomalies and redox indices indicate the primary precipitation from oxygenated seawater under relatively oxic marine conditions during early diagenesis. From the point of view of economic potential, the studied phosphorites can be considered as a valuable source of phosphate flour with a low content of radioactive elements in the mineral composition.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104101"},"PeriodicalIF":2.1,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487258","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":"Development of Artificial fish bait incorporated with Surimi and fatty acid bioattractant derived from seafood processing wastes for longline fishing","authors":"Soosaiantony Emiema ,&nbsp;Thangaraji Ravikumar ,&nbsp;Krishnamoorthy Elavarasan ,&nbsp;Neethirajan Neethiselvan ,&nbsp;Vijaykumar Renuka ,&nbsp;Fathiraja Parthiban ,&nbsp;Karunanithi Masilan ,&nbsp;Ulaganathan Arisekar","doi":"10.1016/j.rsma.2025.104090","DOIUrl":"10.1016/j.rsma.2025.104090","url":null,"abstract":"<div><div>This study explored the possibilities of developing an artificial fish bait using a fish surimi gel matrix and attractants derived from shrimp, grouper, and tuna processing wastes. A wet rendering method was used to extract bioattractant from the wastes, which were characterized by their fatty acid using GC-MS. It resulted in a total of 37 fatty acids present in the different bioattractant. Among them, a high unsaturated degree of fatty acids (85.88 %) was found in the bioattractant derived from grouper, followed by tuna (64.62 %) and shrimp (62.35 %). A total of four different experimental baits were developed, including a surimi gel bait (SGB) as control, surimi gel bait with grouper bioattractant (SGB-GB), surimi gel bait with tuna bioattractant (SGB-TB), and surimi gel bait with shrimp bioattractant (SGB-SB) at three different level of concentrations viz., 1 %, 3 %, and 5 %. The developed baits were subjected to gel strength (GS), water holding capacity (WHC), expressible moisture content (EMC), fat leaching (FL), seawater stability, and attractability tests to standardize the ideal bait for commercial fishing. Fourier-Transom Infrared spectroscopy (FTIR) and Atomic Force Microscopy (AFM) were used to describe its molecular and microstructural features. AFM results displayed that the SGB-GB 5 % had a smooth and homogenous gel matrix with a low Ra value (19.11 nm), while the control bait (SGB) had a coarse and disorganized gel matrix with the highest Ra value (36.77 nm). In terms of fat leaching (86.34 %), seawater stability (81.69 %), attractability (28/30), gel strength (153.46 g/cm), EMC (13.52 %), and WHC (78 %), 5 % SGB-GB bait was found to be an ideal bait for commercial fishing.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104090"},"PeriodicalIF":2.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143508265","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":"Wave prediction using Graph Neural Network at Darwin Harbour, Australia","authors":"Nazeat Ameen Iqra ,&nbsp;Jun Li ,&nbsp;Xiao Hua Wang ,&nbsp;Gang Yang","doi":"10.1016/j.rsma.2025.104088","DOIUrl":"10.1016/j.rsma.2025.104088","url":null,"abstract":"<div><div>Darwin Harbour (DH), Australia, is a flood-dominated estuary in which the waves substantially influence ocean dynamics, especially in the outer harbour. Hence, the prediction of waves is crucial for coastal activities and management in DH. This paper uses a graph neural network (GNN) model to forecast wave characteristics in the nearshore zone of DH. The model was used for next-frame prediction of the wave parameters such as significant wave height, peak period, wavelength, wave velocity, and wave direction, with the model configured to project future values by assessing parameters at a specific domain and in specific time frames. The GNN framework is intended to identify graph dependence via message passing between the nodes. The input to the model is the wave outputs from a 62-day simulation from the SWAN model. The study was carried out using 7194 nodes, with each node linked to 5 neighbour nodes, to forecast dependencies accurately. The data were split 80/20 % for training and testing purposes. Furthermore, the significance of the number of hours as an input on anticipated outcomes was investigated. The performance of the model was also evaluated for short-term (1 h, 3 h and 6 h) and longer-term (12 h and 24 h) predictions; 17 scenarios were investigated, with one scenario for single-step forecasting, and the others for multi-step forecasting. The GNN model forecasts the wave parameters well, with root-mean-squared errors ranging from 0.06 to 0.13, and correlation coefficients <em>R</em>² ranging from 0.96 to 0.84, considering all parameters together. Moreover, it demonstrated that increasing the number of hours for input and time steps for forecasting reduced the model’s performance. Finally, the model was compared with the other three popular ML models. The result indicates that the proposed GNN model is useful for spatiotemporal wave prediction and can be integrated with numerical ocean modelling to examine coastal phenomena.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"84 ","pages":"Article 104088"},"PeriodicalIF":2.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563298","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":"Seasonal shifts in microplastics: Uncovering Goa's marine pollution patterns","authors":"Veda V. Manerikar ,&nbsp;Vinod Mandrekar ,&nbsp;Vishnu S. Nadkarni ,&nbsp;Manojkumar S. Kulkarni ,&nbsp;Sanjeev C. Ghadi","doi":"10.1016/j.rsma.2025.104089","DOIUrl":"10.1016/j.rsma.2025.104089","url":null,"abstract":"<div><div>This study systematically examines the spatiotemporal distribution of microplastic particles across Goa's 160 km coastal ecosystem during the pre-monsoon, monsoon, and post-monsoon seasons. It delivers the first dataset on pollution levels and indices in Goa's coastal and estuarine areas across these three seasons, addressing a critical knowledge gap in understanding seasonal variations in the region. Estuaries and coastal areas were subjected to both quantitative and qualitative assessments of microplastic particles, focusing on the foraging of microplastics by <em>Mugil cephalus</em> and <em>Rastrelliger kangurta</em>. Microplastic concentrations varied between 25 ± 4.76 and 273.5 ± 11.26 per liter or kilogram of the water and sediment samples. During the monsoon season, the microplastics were found higher in estuarine and coastal water compared to sediment, likely due to increased turbulence. In contrast, post-monsoon sediment in coastal areas had a higher count than water, suggesting settling after turbulent periods. Analysis showed that fibers were the most prevalent, followed by fragments, pellets, and microbeads, with the Coefficient of Microplastic Impact values reaching 0.7 in estuaries like Chapora and Sal water during the post-monsoon season. During this season, the Pollution Hazard Index indicated high risk (Category 4) at coastal areas such as Baga, Colva, and estuaries like Mandovi, and Sal. The Pollution Load Index ranged from 1.00 in Sal water post-monsoon to 3.30 in Mandovi sediment. Dark-colored particles, mainly black, blue, and green nylon fiber, constituted the majority of microplastic particles in the gut contents of <em>Rastrelliger kangurta</em> and <em>Mugil cephalus</em>. Fourier transform infrared and Raman spectroscopy identified essential polymers, including polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyethylene terephthalate, and nylon. Initiated during the COVID-19 lockdown, this study holds a unique significance in assessing microplastic prevalence in the marine ecosystem of Goa.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104089"},"PeriodicalIF":2.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143520083","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":"Microplastic contamination in the gastrointestinal tracts of larval fish assemblages from coastal waters in southwestern Taiwan","authors":"Ming-Yih Leu ,&nbsp;Sun-Hon Lin ,&nbsp;Te-Yu Chen ,&nbsp;Fung-Chi Ko ,&nbsp;Shao-Hung Peng","doi":"10.1016/j.rsma.2025.104076","DOIUrl":"10.1016/j.rsma.2025.104076","url":null,"abstract":"<div><div>Microplastics (MPs) are widespread in coastal seas, posing risks to marine life. Planktonic fish larvae and juveniles, essential for fish population sustainability, are particularly susceptible to MPs, environmental stress, and predation. However, the effects of MP ingestion on larval fish remain poorly understood. This study investigated MP ingestion in 169 larval and 4 juvenile fish from the coastal waters of Qieding, Taiwan. Gastrointestinal tracts were analyzed using alkali digestion, microscopy, and FT-IR analysis, revealing MPs in 21.39 % of samples at an average of 1.59 ± 0.90 MPs individual^–1. A total of 59 MPs were identified across 20 fish species, with whipfin silver-biddy (<em>Gerres filamentosus</em>) showing the highest count (14 particles; average of 1.75 ± 0.00 MPs individual^–1). Polyethylene terephthalate (PET) was the most common polymer (44.07 %), while fibers constituted the majority of particles (89.83 %), primarily transparent (54.24 %). Nearly half of all MPs measured between 1 and 5 mm. MPs were positively correlated with fish size (<em>R²</em> = 0.038, p = 0.009), and more advanced developmental stages, such as juveniles, showed a significantly higher incidence of MPs (p &lt; 0.001). This trend indicates that MPs are more frequently ingested by juvenile or larger fish larvae. These findings provide essential insights into MP contamination in Taiwanese waters, highlighting potential impacts on the health of planktivorous larval fish and marine ecosystems.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104076"},"PeriodicalIF":2.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487261","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":"Optimization of domestic inland transportation routes for imported iron ore with the consideration of carbon costs – A case study of central China","authors":"Jiawei Ge ,&nbsp;Junshuo Huang ,&nbsp;Yiying Chao ,&nbsp;Jiangang Jin ,&nbsp;Sicheng Zhu","doi":"10.1016/j.rsma.2025.104097","DOIUrl":"10.1016/j.rsma.2025.104097","url":null,"abstract":"<div><div>This paper aims to address the challenges encountered with the iron ore transportation system in China’s Central region, which relies heavily on an overburdened single-mode transport system. To enhance the overall capacity of iron ore transportation, a multimodal transport route optimization solution is proposed, which seeks to minimize transport costs, while considering time window penalties. A BP neural network time series forecasting method is employed to predict the transport demand and a non-dominated sorting genetic algorithm with an elite strategy (NSGA-II) is utilized to optimize the transport routes. The findings indicate that, for improved economic efficiency, a higher proportion of waterway and railway transport in the overall transport plan is recommended. For enhanced timeliness, a greater share of road transport within the scheme is advisable. By comparing these strategies with those that neglect carbon tax costs, this paper underscores the pivotal role of carbon emission costs (CEC) in shaping transport route designs, offering a balanced approach to optimize the multimodal transport network of iron ore transportation to Central China, promoting economic, environmental, and operational sustainability for steel enterprises.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104097"},"PeriodicalIF":2.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487260","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":"Large-scale pattern of metazoan meiofauna as descriptor of environmental gradient along the shelf seas of China","authors":"Hong Zhou,&nbsp;Ruiwen Zeng,&nbsp;Yating Wang,&nbsp;Xiaoshou Liu,&nbsp;Er Hua,&nbsp;Qianqian Jiang,&nbsp;Zhinan Zhang","doi":"10.1016/j.rsma.2025.104075","DOIUrl":"10.1016/j.rsma.2025.104075","url":null,"abstract":"<div><div>Insight into large-scale distribution pattern helps our understanding of the processes in shelf sea ecosystem. Spatial patterns of meiofaunal abundance, biomass, taxon composition and assemblage structure among the five seas (Bohai Sea, northern Yellow Sea, southern Yellow Sea, East China Sea and northern part of South China Sea) along the continental shelf of China were investigated, to examine the latitudinal and depth gradients with the seasonal variation taken into account, and to reveal the environmental factors which may explain the observed pattern. Two-way crossed ANOVA and PERMANOVA tests revealed significant differences in terms of abundance, biomass, number of taxa and assemblage structure at the major taxon level among different seas while seasonal variation was not significant for the assemblage structure and most of numerical characteristics of the fauna. Univariate and multivariate correlation and regression indicated that meiofaunal standing stock and assemblage structure were better explained by the hydrographic features of bottom water, the quantity and quality of food and the sediment granulometry. In general, abundance and biomass of the shelf sea meiofauna showed both latitudinal and depth trends which were negatively correlated with depth and increased with the increasing latitude. Peaks of meiofauna abundance (ind/10cm²) and biomass (μg dwt/10cm²), either of which exceeded 1000, were observed in the Bohai Sea, the northern and southern Yellow Sea, corresponding to the latitudes of the Yellow River Estuary, the Bohai Strait, the frontal system between the Yellow Sea Cold Water Mass and coastal currents, and to the location (27.5–29 °N, 122 °E) in the East China Sea where a nearshore bottom branch of Kuroshio Current was originated and passed by. The large-scale interregional and geographic pattern of meiofauna may act as descriptor for the environmental gradient under the forcing of large river runoff, oceanographic and sedimentary processes along the China shelf sea ecosystems.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"84 ","pages":"Article 104075"},"PeriodicalIF":2.1,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547925","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":"Spatio-temporal variability of coastal currents along the Yucatan Peninsula using Self‐Organising Maps","authors":"Gemma L. Franklin ,&nbsp;Ma. Eugenia Allende-Arandía ,&nbsp;Alejandro Paladio-Hernández ,&nbsp;J. Alejandro Kurczyn","doi":"10.1016/j.rsma.2025.104098","DOIUrl":"10.1016/j.rsma.2025.104098","url":null,"abstract":"<div><div>The characterisation of oceanic and coastal variability around the Yucatan Peninsula is important for understanding the physical processes involved, which have an environmental, social and economic impacts at a both local and regional scales. In particular, understanding the coastal dynamics in the region facilitates the conservation of ecosystemic services, the identification and prevention of vulnerable situations, the identification of risks and management practices, as well as the evaluation of the effects of environmental and anthropogenic changes. In the present study, oceanic and atmospheric numerical models are used, with a high spatial and temporal resolution. These models have been validated with in situ data and simulations range from the continental platform (regional) to the coastal zone (local). The forcings involved under different climatic events (e.g. average conditions, storms and northerlies) and their influence on coastal dynamics at different spatial and temporal scales are studied. The model performed particularly well when comparing wave heights, wave period and wave direction with field data for the different events. In terms of current variability, the trends identified in the results are supported by previous findings of specific field case studies. Spatial and temporal patterns of the currents' velocities identified through Self-Organising Maps, with time dependence given by their best matching units, can reproduce the characteristic patterns of surface current variability. The results of the present study show that the northern coast of the Yucatan Peninsula can be divided into three main regions: 1) the east, mostly controlled by the Yucatan Current; 2) the central region, which is more of a transition zone; and 3) the west, off the coast of Campeche, influenced primarily by atmospheric processes (e.g. sea-land breezes and northerlies). The main surface currents along the northern Yucatan Peninsula Coast are generally to the west but show effects of sea-land breezes and northerlies.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104098"},"PeriodicalIF":2.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519952","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":"Atlantic Goliath Groupers as inhabitants of mangroves on the Brazilian coast","authors":"Junio S. Damasceno ,&nbsp;Ana Paula C. Farro ,&nbsp;Athila A. Bertoncini ,&nbsp;Maurício Hostim-Silva","doi":"10.1016/j.rsma.2025.104092","DOIUrl":"10.1016/j.rsma.2025.104092","url":null,"abstract":"<div><div>While mangroves are essential coastal habitats in the tropics, environmental policies have often failed to protect these biodiverse estuarine environments, which has a negative impact on the ecological services they offer, while also endangering the resident species. The present study describes a population of juvenile Atlantic Grouper (<em>Epinephelus itajara</em>), which is a critically endangered species in Brazil, in a mangrove habitat located in close vicinity to an urban area. This description is based on the examination of biometric variables, the annual frequency of occurrence of the groupers, and a comparative analysis of similar habitats. The study aimed to devise protective measures for the conservation of the mangrove ecosystems that are considered to be essential nursery habitats for the conservation of marine species, such as <em>E. itajara</em>. The specimens were collected using traps, which were set in shallow, coastal habitats in the São Mateus estuary, on the eastern coast of Brazil. The length and weight of each collected specimen were recorded. A total of 148 <em>E. itajara</em> specimens were collected during the present study (total length: 59–365 mm; weight: 5–820 g), with significantly larger individuals being captured during the austral autumn. A significantly larger number of specimens were collected during the summer months in comparison with the winter months. The mean monthly capture rates of juvenile groupers per trap in the mangroves of eastern Brazil were higher than those reported for the state of Florida (United States). The presence of juvenile <em>E. itajara</em> is limited by the availability of high-quality habitats, as reflected in the distribution and abundance of the species, and the seasonal dynamics of its population in the mangrove habitats. The findings of the present study further underscore the importance of effective fishery management, and the need for long-term research to identify and protect the natural marine habitats that provide nurseries, areas of juvenile recruitment, and breeding grounds for endangered species, such as the Atlantic Goliath Grouper.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"84 ","pages":"Article 104092"},"PeriodicalIF":2.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547923","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":"Sediment particle sizes and river discharge implications on shoreline change along Anlo Beach, Ghana","authors":"Janet Frimpomaa ,&nbsp;Paul Kojo Mensah ,&nbsp;Kwasi Twum Antwi-Agyakwa ,&nbsp;Bapentire Donatus Angnuureng","doi":"10.1016/j.rsma.2025.104095","DOIUrl":"10.1016/j.rsma.2025.104095","url":null,"abstract":"<div><div>Anthropogenic activities within river catchments significantly alter river flow patterns and sediment discharge into coastal zones, impacting coastal systems and their management. To address the persistent erosion of Anlo Beach in Ghana, this study aims to evaluate the role of sediment discharge from the Pra River in shaping the beach's evolution. Specifically, the research seeks to quantify sediment inputs, assess shoreline changes, and identify the factors driving coastal erosion. Using a combination of Landsat 7, 8, 9, and Sentinel-2 satellite imagery over a 10-year period, alongside in situ measurements of flow velocities, sediment load, river bathymetry, and beach aerial photos over six months (May-October, 2022), we analysed shoreline dynamics and sediment characteristics. Satellite data were processed using the CoastSat toolkit, while in situ data were analysed using sediment discharge equations and protocols in ArcMap. Results reveal an average shoreline erosion rate of 5–15 m/year over the past decade, with a sediment loss of approximately 100,000 m³ in the last six months. The sediment transported by the Pra River to Anlo Beach is predominantly very fine-grained, likely due to upstream small-scale mining activities, which reduces effective sediment deposition and exacerbate erosion. The findings underscore an urgent need for targeted management interventions to mitigate coastal erosion and socio-economic impacts on the Anlo Beach community.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"83 ","pages":"Article 104095"},"PeriodicalIF":2.1,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474464","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}