Ocean & Coastal Management最新文献

{"title":"High resolution seascape visibility tool for aquaculture marine spatial planning","authors":"Maria Paola Campolunghi,&nbsp;Annalisa Minelli,&nbsp;Raffaele Proietti,&nbsp;Francesco Cardia,&nbsp;Tommaso Petochi,&nbsp;Giovanna Marino","doi":"10.1016/j.ocecoaman.2025.107765","DOIUrl":"10.1016/j.ocecoaman.2025.107765","url":null,"abstract":"<div><div>Aquaculture is recognized as the fastest-growing animal production system worldwide. However, it often encounters public opposition due to the visual impact of fish farm infrastructures, which represents a significant constraint in policy decisions related to the allocation of marine areas for aquaculture development. This study presents the <em>r.wind.sun_aqua</em> tool, an adaptation of the open-source <em>r.wind.sun</em> module for GRASS GIS, designed to identify marine areas suitable for aquaculture based on visual impact, thereby supporting the integration of aquaculture development within the landscape. The tool combines viewshed analysis with a quantification of distortion of observed objects in the visual field, generating a Non-dimensional visual impact Index (NI) to represent human perception of aquaculture structures. A high-resolution LiDAR Digital Surface Model (DSM) is used as input, ensuring precise and reliable evaluations.</div><div>The tool was tested in the Gulf of Gaeta (Italy), an area that hosts, among others, fish and shellfish aquaculture, tourism, high-value landscapes, and cultural heritage sites. The average NI was calculated for the locations of existing fish farms and four potential new aquaculture sites. Based on high-resolution NI maps, existing fish farms were found to have a greater impact on the seascape visibility of the Gulf of Gaeta compared to the proposed new farming sites.</div><div>The <em>r.wind.sun_aqua</em> tool proved effective in assessing and quantifying the visual impact of fish farming facilities on coastal landscapes. It is currently being developed into a user-friendly, open-source QGIS plugin to assist non-experts in analysing the visual impact of aquaculture on coastal areas.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107765"},"PeriodicalIF":4.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Fisher's perception and attitude towards sustainable marine aquarium trade in India","authors":"Sanjeevi Prakash","doi":"10.1016/j.ocecoaman.2025.107778","DOIUrl":"10.1016/j.ocecoaman.2025.107778","url":null,"abstract":"<div><div>This study explores the perceptions and attitudes of fishers towards sustainable marine aquarium trade in India, a sector that has significant implications for biodiversity conservation and local economies. In the present study, we obtained data through qualitative interviews and surveys with fishers across key coastal ornamental fishing villages of south India (Palk Bay and Gulf of Mannar). Out of 215 respondents, more than 75 % are between the ages of 31–50. Sixty-three percent of the fishers were considered literate. Among fishery components, 97 % of fishers own at least one boat and close to 89 % were traveling less than 20 kms on a daily basis for fishing related activities. Most preferable ornamental fishes caught and supplied by the fishers includes clowns and damsels up to 89 % followed by other fishes and invertebrates. Among the perception of fishers, close to 50–80 % highlighted the destructive fishing practices such as trawling and SCUBA diving and coral mining as top 2 destructive activities for coral reef ecosystems. Further, among the benefits received from the coral reefs, fishers ranked the fisheries production and less soil erosion as top 2 benefits. The attitude of the fishermen towards conservation indicated that more than 98 % were aware that the Gulf of Mannar is declared as a Marine Biosphere Reserve. Also, more than 90 % of fishers have shown their responsibility and interest towards protecting the biodiversity and work along with the forest department to undertake sustainable fishing methods and coral reef restoration methods to enhance the fisheries production. Finally, over 60 % of the fishers lack alternative sources of income beyond ornamental fishing to fulfill their daily needs. By identifying knowledge gaps, the present research seeks to inform policy recommendations that promote sustainable marine aquarium trade while ensuring the livelihood of fishing communities are preserved. Ultimately, fostering a collaborative approach between fishers, conservationists, and policymakers will be essential for achieving long-term sustainability in India's marine aquarium industry.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107778"},"PeriodicalIF":4.8,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Does the egg buy-back scheme work as a conservation tool? A case study for green turtle (Chelonia mydas) egg protection in Terengganu, Malaysia","authors":"Seh Ling Long ,&nbsp;Darshanaa Chellaiah ,&nbsp;Nur Abidah Zaaba ,&nbsp;Jason Yew Seng Gan ,&nbsp;Nur Isandra Shazlynn Shamsul Azmil ,&nbsp;Rushan Abdul Rahman","doi":"10.1016/j.ocecoaman.2025.107731","DOIUrl":"10.1016/j.ocecoaman.2025.107731","url":null,"abstract":"<div><div>Sea turtle populations face various threats globally. In Malaysia, their numbers have declined since the 1950s. One major threat is overharvesting of turtle eggs. In the state of Terengganu, turtle egg collection is regulated through a trade concession. To protect the turtle populations, the Terengganu State Department of Fisheries (DoF) introduced an egg buy-back scheme in 1961, which involves purchasing eggs from licensed egg collectors and relocating them to protected hatcheries. A complete ban on the sale and consumption of sea turtle eggs was implemented in 2022. This case study evaluates the scheme's effectiveness as a conservation measure and its financial implications. We examined hatching and emergence success of green turtle (<em>Chelonia mydas</em>) eggs purchased by Lang Tengah Turtle Watch, now known as Marine Conservation and Research Organisation Malaysia (PULIHARA), between 2016 and 2021, considering factors such as relocation distance, monsoon season, and handling practices among different egg collectors. A total of 71,315 green turtle eggs from 700 nests were purchased, with overall hatching and emergence success rates of 77.6 % and 74.1 %, respectively. Eggs relocated by PULIHARA showed higher success rates than those handled by licensed egg collectors, underscoring the importance of minimizing relocation distances and improving handling practices to reduce movement-induced mortality. With at least 92.1 % of nests and eggs already protected within sanctuaries and reserves, PULIHARA spent MYR 275,411 to protect an additional 2.1 % of total eggs from 1.7 % of total nests laid in Terengganu. While the egg buy-back scheme effectively safeguarded turtle eggs, financial constraints limit the scheme's full potential. High egg prices strain conservation budgets, whereas low prices deter sales to conservation. To ensure long-term success, continued collaboration among government bodies, NGOs, and local communities, along with strict enforcement, is needed, and potentially revising the licensing system to prioritize conservation-driven participation.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107731"},"PeriodicalIF":4.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Methodological advances in sea level rise vulnerability assessment: implications for sustainable coastal management in a climate change scenario","authors":"Angela Rizzo ,&nbsp;Gaia Mattei ,&nbsp;Léa Dumon Steenssens ,&nbsp;Marco Anzidei ,&nbsp;Pietro P.C. Aucelli ,&nbsp;Tommaso Alberti ,&nbsp;Fabrizio Antonioli ,&nbsp;Annelore Bezzi ,&nbsp;Davide Bonaldo ,&nbsp;Giorgio Fontolan ,&nbsp;Stefano Furlani ,&nbsp;Isabella Serena Liso ,&nbsp;Mario Parise ,&nbsp;Paolo Sansò ,&nbsp;Giovanni Scicchitano ,&nbsp;Daniele Trippanera ,&nbsp;Antonio Vecchio ,&nbsp;Giuseppe Mastronuzzi","doi":"10.1016/j.ocecoaman.2025.107751","DOIUrl":"10.1016/j.ocecoaman.2025.107751","url":null,"abstract":"<div><div>Sea level rise (SLR) is one of the most evident consequences of global warming. Low-lying coastal areas with mobile coastal systems are particularly exposed to sea level change (SLC), both transient (storm surges and tsunamis) and permanent (SLR), especially when coupled with vertical land movements (VLMs), determining local relative sea level rise (RSLR). In the last two decades, several studies have focused on the analysis of coastal processes linked with SLC, in particular regarding the expected SLR up to 2150 AD and beyond. In this study, starting from a critical analysis of methods exploited for the assessment of the vulnerability to RSLR and their suitability, a tailored approach for the impact assessment as an operative tool for the management of coastal areas in a changing climate is proposed.</div><div>Our analysis was carried out through the evaluation of 49 selected studies, which were included in a specifically implemented database by searching in Scopus. Special focus was given to the methodological aspects for evaluating RSLR impacts as the vulnerability of the coastal areas of the Mediterranean region published in the last five years. This insight shows that the static approach represents the most popular method for the analysis and visualization of the expected coastal modifications, followed by the model-based approach. Furthermore, the evaluation of the suitability level of each accounted method highlighted that topographic and index-based methods are significant for regional analyses, whilst model-based approaches are strongly exploited for site-specific analyses. Based on the outcomes of this analysis, a multi-step procedure for coastal zone management is proposed.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107751"},"PeriodicalIF":4.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Unveiling inequalities among small-scale Fishers","authors":"L. Nahuelhual ,&nbsp;N.I. Segovia ,&nbsp;C. Jullian ,&nbsp;L. Outeiro ,&nbsp;R. Oyanedel ,&nbsp;G. Saavedra ,&nbsp;S. Gelcich ,&nbsp;R.A. Estévez","doi":"10.1016/j.ocecoaman.2025.107761","DOIUrl":"10.1016/j.ocecoaman.2025.107761","url":null,"abstract":"<div><div>Distributional inequalities within small-scale fisheries (SSF) pose significant challenges for ecosystems and communities, yet a research gap exists in understanding such inequalities. We investigate landing and income inequalities among small-scale vessel owners, focusing on Chile as a case study. We employ four key inequality measures: the Gini coefficient, skewness, coefficient of variation, and the concentration of landings and revenues in vessels&gt;10 m. Our findings reveal pronounced disparities in both landings and revenues within the small-scale fishing sector, which persist or slightly increase after accounting for fishing effort. At the national level, Gini coefficients for landings and revenues reached 0.84 and 0.78 (with 1 indicating perfect inequality). Skewness analysis confirms these results. Additionally, the concentration of landings and revenues from vessels above 10 m underscores the unequal concentration patterns of different vessel owners. While our study sheds light on distributional inequality dynamics within Chile's SSF, it also raises questions about potential similarities in SSF worldwide. Although data limitations may hinder further exploration, comparable inequality patterns might exist in other contexts. Furthermore, our results serve as a reminder that achieving sustainable development goals demands a comprehensive understanding of distributional inequalities and the formulation of targeted policies to rectify them within SSF across the globe.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107761"},"PeriodicalIF":4.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Understanding the roles, limits, and best practices for community benefit agreements in U.S. offshore wind development","authors":"Julia A. Bingham ,&nbsp;Emily Miller ,&nbsp;Lorren Ruscetta ,&nbsp;Hossain Ahmed Taufiq ,&nbsp;Greg Stelmach ,&nbsp;Jeremy Firestone ,&nbsp;Teresa R. Johnson ,&nbsp;Shawn Hazboun ,&nbsp;Hilary Boudet","doi":"10.1016/j.ocecoaman.2025.107769","DOIUrl":"10.1016/j.ocecoaman.2025.107769","url":null,"abstract":"<div><div>Offshore Wind (OSW) development in the U.S. receives broad public support, but individual projects often face challenges including opposition from communities hosting or potentially impacted by OSW infrastructure. Local support may improve if communities anticipate receiving benefits from OSW development. Mechanisms designed to procure community benefits can include agreements between a developer and community actor, such as Community Benefit Agreements (CBA), Good Neighbor Agreements (GNA), Host Community Agreements (HCA), among others. How these agreements are viewed by signatories, their efficacy in ensuring fair and equitable distribution of benefits, and whether they do in fact reduce public opposition are not well understood. We reviewed available academic and grey literature focusing on CBAs and similar agreements in OSW development to better understand (A) the motivations, participants, and processes involved in their development, (B) the efficacy and ability to enforce such agreements, (C) potential “best practices” for developing these agreements to fulfill their intended purpose, and (D) outstanding challenges, knowledge gaps, and uncertainties. We propose four initial best practices for CBA development and implementation in U.S. OSW, including (1) <em>Determine contextual specificities,</em> (2) <em>Engage in early and long-term discursive co-development,</em> (3) <em>Recognize communities as hosts,</em> and (4) <em>Ensure follow-through and accountability</em>. Existing gaps include better understanding long-term outcomes, developing regulatory tools that allow for contextual flexibility, and engagement with other energy industries and academic fields. Specifically, drawing from marine spatial planning, marine justice, and energy equity frameworks may inform improved community engagement and policy development for community benefit mechanisms in U.S. OSW development.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107769"},"PeriodicalIF":4.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Conservation and ecotourism increase natural capital asset value: an economic assessment of sea turtles on Boa Vista Island, Cabo Verde","authors":"Samir Martins ,&nbsp;Adolfo Marco ,&nbsp;Leo J. Clarke","doi":"10.1016/j.ocecoaman.2025.107764","DOIUrl":"10.1016/j.ocecoaman.2025.107764","url":null,"abstract":"<div><div>Sea turtles are of significant ecological, sociocultural, and economic importance to coastal communities globally. After historical population declines, many populations have shown a positive response to conservation efforts, and their status as a flagship species for wildlife watching tourism has facilitated the growth of turtle-based ecotourism. If not sustainably managed, turtle-watching tourism can have negative impacts on wildlife, but with best practice can offer direct benefits to the local economy as well as positive contributions to conservation management. Here, we quantify the Total Economic Value (TEV) of the nesting population of the loggerhead <em>Caretta caretta</em> sea turtle on Boa Vista Island, Cabo Verde, for the first time. The nesting abundance of this population has risen dramatically following the implementation of conservation efforts three decades ago, alongside an expansion of turtle-watching tourism which since 2006 has evolved into a significant component of the tourism sector. Our estimates indicate that the annual TEV of the population has risen dramatically between 2008 and 2019 from approximately €300,000 to almost €2 million, driven by an increase in the non-use and non-consumptive value of the population through conservation investment and ecotourism and a decrease in the consumptive value through poaching. Tourist WTP values indicate the potential for further revenue to be generated to contribute to conservation. Our results can inform future policy decisions and natural capital assessments in Cabo Verde that may support the sustainable expansion of turtle watching as a significant component of the developing tourism sector, providing an alternative income source and economic benefits to local communities and further reducing consumptive use of the population.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107764"},"PeriodicalIF":4.8,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 cumulative risks to coastal and marine habitats under management and climate change scenarios: The case of northern Portugal","authors":"Jacinto Cunha ,&nbsp;Michael Elliott ,&nbsp;Sebastian Villasante ,&nbsp;Stefano Balbi ,&nbsp;Edna Cabecinha ,&nbsp;Sandra Ramos","doi":"10.1016/j.ocecoaman.2025.107756","DOIUrl":"10.1016/j.ocecoaman.2025.107756","url":null,"abstract":"<div><div>Managing the risks associated with human activities and uses in marine and coastal regions is crucial in a time of maritime activity expansion promoted by Blue Growth, especially with the increasing effects of climate change. Effective management of the cumulative risks is essential to safeguard ecosystems from potential further degradation, maintaining their resistance and resilience and ability to provide ecosystem services (ES) and societal goods and benefits (SGB). Here, we adopt a cumulative risk-based approach to assess risk to habitats and ecosystems, considering human activities and two climate-derived pressures for three management narratives, across three IPCC Shared Socioeconomic Pathways in the northern marine and coastal region of Portugal. Our findings highlight high ecosystem risk in some marine areas and coastal segments, particularly affecting beaches, aphotic soft and rock bottoms, and estuarine areas. Across the management and climate scenarios, the most important contributors to risk included rising sea surface temperatures, increased coastal exposure to relative sea-level rise (SLR) and storminess, fishing, tourism, artificial areas, and maritime transport. Overall spatial risk patterns varied more with changes in management scenarios than between climate scenarios, with climate pressures having an additive effect on habitat and ecosystem risk. The inclusion of the climate-derived exogenous pressures (i.e. those whose causes emanate from outside the management system) altered the high-risk zone spatial patterns at the land-sea interface, while in marine areas, it increased the overall risk scores without changing the observed overall risk patterns. It is recommended that policymakers and managers should adopt a precautionary approach, using cumulative assessments integrated into decision-support systems and ecosystem-based management plans to anticipate and adapt to or mitigate future changes. Thereby, ensuring the maintenance of the ecosystem resilience to change, to avoid reaching tipping points that would disrupt the resource-provisioning capacity of these ecosystems and the provision of ES and SGB.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107756"},"PeriodicalIF":4.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Benefit assessment of the ecological restoration of the Yellow River Delta coastal wetland based on improved contingent valuation method","authors":"Na Wang ,&nbsp;Jing-Mei Li ,&nbsp;Zhi-Hua Xu ,&nbsp;Jing-Zhu Shan","doi":"10.1016/j.ocecoaman.2025.107753","DOIUrl":"10.1016/j.ocecoaman.2025.107753","url":null,"abstract":"<div><div>Coastal wetlands, which provide important habitats for offshore organisms to reproduce and serve as transfer stations for migrating birds, have important ecological functions. Recently, the amount of coastal wetland destruction has increased with the intensification of human activities in coastal areas; thus, ecological restoration is used to ensure the continuous serviceability of wetland ecosystems. In this paper, the benefits of restoring the Yellow River Delta coastal wetland were divided into four categories: water quality, carbon sequestration, erosion regulation and biodiversity maintenance services. Data were collected with a contingent survey, the Heckman-style two-stage sample selection model was adopted to solve the protest payment problem in the contingent valuation method, and the marginal value to improve these four services was estimated. Finally, the benefit of the restoration of this coastal wetland was calculated. The key findings are as follows. (a) The public's average willingness to pay to improve the four categories of the Yellow River Delta coastal wetland is 26.84, 25.59, 25.18 and 24.76 yuan/a, and these values negatively correlate with age and sea front distance and positively correlate with income level. (b) The per capita benefit of restoring this coastal wetland is 102.37 yuan/a, and the annual total benefit is approximately 209 million yuan. (c) Respondents who are younger, have higher education levels and annual income levels and are more satisfied with the ecological restoration of coastal wetlands have lower protest payment ideas. These conclusions can provide a reference for marine management departments to improve the ecological restoration of the Yellow River Delta coastal wetland, and policy recommendations can help advance ocean and coastal management.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"268 ","pages":"Article 107753"},"PeriodicalIF":4.8,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Real-time tracking of recreational boats in coastal areas using deep learning","authors":"Marco Signaroli ,&nbsp;Arancha Lana ,&nbsp;Eugenio Cutolo ,&nbsp;Josep Alós ,&nbsp;Yolanda Gonzalez-Cid","doi":"10.1016/j.ocecoaman.2025.107762","DOIUrl":"10.1016/j.ocecoaman.2025.107762","url":null,"abstract":"<div><div>To effectively manage and conserve coastal ecosystems, accurate spatial data on marine recreational activities are crucial. This study introduces a deep-learning-based system designed for real-time detection and tracking of recreational vessels in coastal environments using cameras. We fine-tuned and evaluated two object detection and classification algorithms, YOLOv5 and YOLOv7, for automated, real-time vessel detection, classification and positioning within Marine Protected Areas (MPAs). Additionally, we optimized two multiple object tracking algorithms, StrongSORT and ByteTrack, for tracking the movements of the detected vessels in sequential timeframes. We implemented the best combination (YOLOv5 and ByteTrack) on an NVIDIA Jetson platform, an edge computing device specifically designed for AI applications, conducting thorough benchmarking across various simulated hardware configurations to determine its minimal computational and power needs. Then, we conducted field tests by positioning the system on a coastal cliff overlooking a recreational fishery located in a partial MPA. These tests aimed to validate the system's real-time operational viability and to acquire precise vessel trajectories. The results confirmed the system's efficacy and its data collection capabilities within a real marine environment. Finally, we evaluated two camera calibration techniques for converting image trajectories to geographic coordinates: a projective transformation with homography for accurate perspective adjustment, and an innovative neural network-based approach. The system we have developed could markedly enhance the monitoring and surveillance capabilities within MPAs, generating spatial-temporal data of recreational fishing effort that can be easily transferred to other case studies.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"267 ","pages":"Article 107762"},"PeriodicalIF":4.8,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144105997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}