Ocean & Coastal Management最新文献

{"title":"Exploring farmers' knowledge to trace Non-Native Species in aquaculture","authors":"Eugenio Fossi ,&nbsp;Federica Costantini ,&nbsp;Marina Antonia Colangelo ,&nbsp;Lucia Palazzi Rossi ,&nbsp;Giuseppe Prioli ,&nbsp;Barbara Mikac","doi":"10.1016/j.ocecoaman.2025.108058","DOIUrl":"10.1016/j.ocecoaman.2025.108058","url":null,"abstract":"<div><div>Aquaculture is a major vector for the introduction and spread of Non-Native Species (NNS), with negative ecological and economic implications. Costs generated by biofouling, including that of NNS, in bivalve aquaculture, can represent even 20–30 % of production costs. We used Local Ecological Knowledge (LEK) to assess farmers' awareness of NNS and pest species, as well as their observations of changes in fauna associated with cultivated Mediterranean mussels (<em>Mytilus galloprovincialis</em>) and Pacific oysters (<em>Magallana gigas</em>) in the Adriatic Sea, through questionaries. While most farmers claimed to understand the concept of NNS and reported their presence in farms, only a few could accurately identify a limited number of these species. Farmers observed increases in flatworms, ascidians, barnacles, hydrozoans and spionid polychaete <em>Polydora</em>, which they believe negatively affect mollusks and reduce their marketability. They also reported translocation practices involving seed and adult mollusks between Italy, Greece, France, and Spain, both within and beyond the Mediterranean basin. By combining farmer observations on the abundance of NNS and pests, with their reports of translocation practices, our results suggest that these activities facilitate the introduction and spread of NNS and pests. This highlights that LEK is a valuable tool for identifying challenges related to NNS management in aquaculture. We recommend implementing training programs to improve farmers’ capacity to recognize NNS and contribute to their early detection. Furthermore, cross-border collaboration and partnerships among scientists, policymakers, and farmers are crucial for managing the spread of NNS through aquaculture in the Mediterranean.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108058"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790799","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":"Directed hierarchical causality analysis framework for structural damage in offshore floating photovoltaics","authors":"Xifeng Gao ,&nbsp;Yingxu Zhao ,&nbsp;Qian Ma ,&nbsp;Jijian Lian ,&nbsp;Mengmeng Liu","doi":"10.1016/j.ocecoaman.2025.108069","DOIUrl":"10.1016/j.ocecoaman.2025.108069","url":null,"abstract":"<div><div>Offshore floating photovoltaic structures are subjected to long-term exposure in complex and harsh marine environments, characterized by multi-factor coupling, hidden failure paths, and high uncertainty, making it difficult for conventional analytical methods to effectively reveal the causes of systemic failures. This study establishes a four-dimensional causality system covering design, construction, environment, and management, and proposes a directed hierarchical causality analysis framework that integrates triangular fuzzy numbers, converting fuzzy data into crisp scores defuzzification, and interpretive structural modeling to decode multi-factor interaction paths. The framework identifies a three-layer damage evolution mechanism through a case study of the offshore floating photovoltaic project independently developed by the author's team in China. The results indicate that management factors serve as the underlying drivers, design and environmental factors act as risk transmitters, while connector defects and extreme loads function as direct manifest causes. Based on these findings, a full life-cycle structural management strategy is proposed. This research provides a systematic theoretical framework and empirical evidence that can enhance risk awareness and inform the design of prevention strategies for offshore floating photovoltaic systems throughout their life-cycle.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108069"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839885","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":"To GRaB or not to GRaB: a citizen science-based, decision-making index to assess the biological implications of lost fishing gears retrieval","authors":"Camilla Roveta ,&nbsp;Torcuato Pulido Mantas ,&nbsp;Simone Berardone ,&nbsp;Federico Betti ,&nbsp;Martina Coppari ,&nbsp;Valentina Cappanera ,&nbsp;Cristina Gioia Di Camillo ,&nbsp;Francesco Enrichetti ,&nbsp;Lorenzo Merotto ,&nbsp;Giorgia Sanna ,&nbsp;Alessia Bacchi ,&nbsp;Carlo Cerrano","doi":"10.1016/j.ocecoaman.2025.108072","DOIUrl":"10.1016/j.ocecoaman.2025.108072","url":null,"abstract":"<div><div>Abandoned, lost, or otherwise discarded fishing gears (ALDFGs) represent a major threat to marine biodiversity, yet their removal remains controversial when entangled with sensitive benthic communities. This study presents a standardized marine citizen science (MCS) protocol and a novel decision-making index, the Gear Removal-Biological (GRaB) index, designed to assess the ecological risks of ALDFG removal. Experienced volunteer divers applied the “Reef Alert Network (RAN) - Assessment of lost fishing gear” protocol to survey ALDFGs at coralligenous sites between 29 and 51 m depth in the Portofino Marine Protected Area (Italy), recording site characteristics, gear type, colonization levels, and taxa affected. A total of 91 ALDFGs were documented across 350 m², impacting nearly 1000 organisms, with the red gorgonian <em>Paramuricea clavata</em> being the most affected. The GRaB index integrates five indicators (Entangled Organisms, Surrounding Diversity, Biofouling Colonization, Habitat Complexity, and ALDFG Characteristics) to produce a simple traffic-light classification of low, medium, or high ecological risk. Tested on over 200 surveys, the index provided reliable estimates of potential harm, supporting informed decisions on whether removal should proceed and whether expert consultation is required. Beyond its scientific utility, the approach enhances MCS initiatives by empowering divers and stakeholders, raising awareness of fishing and ALDFG impacts, and providing managers with an adaptive tool transferable across Mediterranean habitats. Ultimately, this integrative framework promotes responsible retrieval practices while fostering collaborative governance, contributing to marine conservation, biodiversity restoration, and the sustainability goals of the UN Ocean Decade.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108072"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840400","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":"Spatially differentiated restoration strategies optimize multiple ecosystem functions in tidal marshes after Spartina eradication","authors":"Wenzhen Zhao ,&nbsp;Shiwei Lin ,&nbsp;Xiaolu Yan ,&nbsp;Jingqiu Zhong ,&nbsp;Lin Su ,&nbsp;Shupu Wu ,&nbsp;Lv Gong ,&nbsp;Yang Hu ,&nbsp;Xiuzhen Li","doi":"10.1016/j.ocecoaman.2025.108073","DOIUrl":"10.1016/j.ocecoaman.2025.108073","url":null,"abstract":"<div><div>Invasive species eradication, while necessary for biodiversity conservation, frequently triggers loss of ecosystem functions previously provided by the invader, creating management dilemmas for large-scale restoration. China’s <em>Spartina alterniflora</em> removal program (68,000 ha, 2023–2025) exemplifies this challenge: despite degrading biodiversity, the <em>S. alterniflora</em> delivers substantial coastal protection and carbon sequestration services. Strategic post-eradication restoration requires explicit evaluation of which ecosystem functions to prioritize at which locations. We developed a spatially explicit framework integrating species distribution modeling with scenario-based optimization to identify optimal native vegetation allocation strategies for ecosystem function recovery following <em>S. alterniflora</em> eradication in the Yangtze Estuary. We modeled habitat suitability for functionally distinct native species (<em>Phragmites australis</em> and <em>Scirpus mariqueter</em>) and designed four restoration scenarios: Environmental Suitability (ES, baseline) and three optimization scenarios targeting Carbon Stock (CS), Coastal Protection (CP), and Biodiversity Protection (BP). Optimization scenarios achieved target ecosystem function improvements (CS: +15 % carbon stock; CP: +71 % wave attenuation; BP: +15 % biodiversity indices), incurred 7–14 % reductions in non-target functions. Carbon storage and coastal protection exhibited synergies through shared biomass dependence: the CS scenario achieved +43 % wave attenuation despite prioritizing carbon, while the CP scenario co-delivered +7 % carbon stock gains. In contrast, biodiversity enhancement through habitat heterogeneity traded off both biomass-dependent functions: the BP scenario reduced carbon stock by 7 % and wave attenuation by 14 % relative to the ES baseline. Given these trade-offs, we recommend spatially differentiated implementation: CP along erosion-prone shorelines, CS in rapidly accreting zones, and BP in areas adjacent to protected habitats. This framework provides a transferable approach for balancing multiple ecosystem functions in <em>S. alterniflora</em> post-eradication coastal restoration worldwide.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108073"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839883","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":"Interconnected freight markets: An ensemble learning and GAM approach to regional and international dry bulk shipping rates","authors":"Cemile Solak-Fiskin ,&nbsp;Erkan Cakir ,&nbsp;Remzi Fiskin ,&nbsp;Ersin Firat Akgul ,&nbsp;Efendi Nasibov ,&nbsp;Tuba Akkaya","doi":"10.1016/j.ocecoaman.2025.108070","DOIUrl":"10.1016/j.ocecoaman.2025.108070","url":null,"abstract":"<div><div>The Baltic Dry Index (BDI) is widely regarded as a key generalizing indicator of shipping market conditions, supporting the analysis of historical market developments, the identification of current trends, and the forecasting of future market trajectories. Despite the index's widely acknowledged utility, it has historically paid limited attention to regional specificity. Consequently, the precise nature of its interconnections with fast-evolving regional freight markets remains insufficiently explained. Addressing this limitation, this study introduces a novel approach that integrates ensemble learning techniques with a Generalized Additive Model (GAM) to examine the complex relationships between regional and international freight rate indices, alongside macroeconomic and industry-specific variables. Using 14 variables from the Black Sea and Mediterranean regions over 413 weekly observations (2016–2024), the analysis identifies a triadic interaction pattern among freight indices that significantly shapes global shipping dynamics. Results indicate that regional indices not only respond to international market conditions but also exert measurable influence on global freight benchmarks, challenging the traditional assumption of unidirectional causality. The proposed triadic interaction framework sets a new perspective for shipping markets and enables more accurate regional forecasting. Specifically, the findings demonstrate how regional markets can influence global freight movements through interconnected spillover mechanisms. Shipowners and charterers should integrate region-specific indices into their risk assessment frameworks to better tailor hedging and operational strategies for target regions, moving beyond sole reliance on the generalized BDI.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108070"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840401","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":"The fate of tidal flats under reduced sediment supply and human activities in the bifurcated Yangtze Estuary","authors":"Chunyan Zhu ,&nbsp;Weiming Xie ,&nbsp;Leicheng Guo ,&nbsp;Dirk Sebastiaan van Maren ,&nbsp;Wenting Wu ,&nbsp;Fan Xu ,&nbsp;Yuan Xu ,&nbsp;Naiyu Zhang ,&nbsp;Zheng Bing Wang ,&nbsp;Qing He","doi":"10.1016/j.ocecoaman.2025.108062","DOIUrl":"10.1016/j.ocecoaman.2025.108062","url":null,"abstract":"<div><div>Tidal flats provide essential ecosystem services but are increasingly threatened by reduced sediment supply and human activities, requiring close monitoring and understandings in estuaries. We focus on the four tidal flats with a total area of 1800 km² in the Yangtze Estuary and systematically evaluate their morphodynamic evolution based on consistent bathymetry data over 60 years (1958–2022). While fluvial sediment supply has declined since the mid-1980s, all four tidal flats in the estuary sustained accretion until 2010, demonstrating a lag of 20–30 years in estuarine morphological response to sediment decline. However, note that accretion primarily occurs on higher parts of the shoals, whereas erosion dominates in the subtidal zones. This is mainly attributed to the combined impact of saltmarsh expansions, reclamation, and channel scour and dredging. It suggests that part of the eroded sediment from channels deposits on adjacent shoals, leading to a regional sediment budget balance, particularly in the central channel-shoal complex with the navigation channel. Moreover, the initiative of removing <em>Spartina</em> from the shoals, a fast-spreading invasive species that benefits shoal accretion but not native species, might disrupt the ongoing accretion of high shoals and induce overwhelming erosion and sediment loss. One management strategy to counteract these impacts and restore tidal flats is to make beneficial use of the dredged and trapped sediment from the North Passage, an annual amount of approximately 50 million m³, to the adjacent shoals, though how to sustainably manage the sediments remains another concern.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108062"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839884","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":"Passenger-centric resilience assessment of the Aegean ferry network under extreme weather events","authors":"Olga Paraskevopoulou ,&nbsp;Orfeas Karountzos ,&nbsp;Christina Iliopoulou","doi":"10.1016/j.ocecoaman.2025.108066","DOIUrl":"10.1016/j.ocecoaman.2025.108066","url":null,"abstract":"<div><div>The resilience of passenger ferry networks is crucial for maintaining reliable transportation in regions with dispersed islands and highly variable demand, such as the Aegean Sea. The Greek Coastal Shipping Network (GCSN) transports goods, supports tourism, and connects isolated islands to the mainland. <em>Extreme weather</em> events and climate change pose significant threats to the network's stability, potentially disrupting connectivity and affecting thousands of passengers. While existing research has primarily focused on port infrastructure or localized disruptions, this study introduces a passenger-oriented network resilience framework that integrates real-world passenger flows, historical meteorological data, and complex network metrics. Using centrality measures (degree and closeness), and the Largest Connected Component (LCC), the approach quantifies both the structural robustness of the network and the direct impact on passengers under extreme weather-induced disruptions. Density-based clustering is employed to identify groups of ports likely to be affected simultaneously, enabling realistic simulation of multi-node disruptions. The findings highlight the most vulnerable ports and routes, offering actionable insights for optimizing ferry schedules, and improving network redundancy. This study demonstrates a practical methodology for assessing and enhancing the resilience of island ferry networks with implications for both operational planning and long-term policy development.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108066"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839854","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":"Updating coastal beach classification: A cluster-based typology for contemporary human use and management","authors":"Nelson Rangel-Buitrago ,&nbsp;Tommaso Giarrizzo ,&nbsp;Lucio Brabo ,&nbsp;Francisco Jailton Silva Filho ,&nbsp;J.A.G. Cooper ,&nbsp;William J. Neal","doi":"10.1016/j.ocecoaman.2025.108064","DOIUrl":"10.1016/j.ocecoaman.2025.108064","url":null,"abstract":"<div><div>Beaches are multifunctional socio-ecological systems that sustain ecosystem services, cultural identity, and major economic activities. The classical Five-Fold beach typology (Remote, Rural, Village, Urban, Resort) remains widely used but insufficient for the complexity of contemporary coastal environments. This paper proposes a refined, cluster-based typology that integrates ecological, socio-cultural, functional, and governance dimensions alongside traditional settlement criteria. Four functional clusters are defined: Tourism-Oriented (Resort, Urban High/Medium/Low Density, Artificial); Settlement-Oriented (Village, Rural, Remote, Fishing/Community); Conservation-Oriented (Protected–Open, Protected–Restricted); and Special-Use/Restricted (Industrial, Restricted, Mixed/Transitional). Each category is described through measurable attributes including density, accessibility, governance regime, and dominant function. The framework corrects major limitations of the Five-Fold model by differentiating urban beaches, acknowledging artificial and industrial systems, incorporating conservation governance, and recognizing hybrid and restricted-use contexts. Comparative analysis demonstrates its applicability across diverse cultural and environmental settings, from megacity coasts to remote community beaches. Beyond conceptual innovation, typology provides an operational tool for Integrated Coastal Zone Management, Marine Spatial Planning, tourism regulation, and biodiversity conservation. It supports evidence-based monitoring and the development of policy indicators aligned with Sustainable Development Goals 11–15. The cluster-based typology advances coastal geography by translating multidisciplinary knowledge into a flexible, globally adaptable framework for contemporary beach management.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"273 ","pages":"Article 108064"},"PeriodicalIF":5.4,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840338","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":"Performance evaluation of sustainable development goals (SDGs) for Chinese major coastal cities: A spatially explicit evaluation considering evenness","authors":"Chao Liu ,&nbsp;Ping Li ,&nbsp;Yuning Zhao ,&nbsp;Zhiwei Zhang","doi":"10.1016/j.ocecoaman.2025.107984","DOIUrl":"10.1016/j.ocecoaman.2025.107984","url":null,"abstract":"<div><div>Spatially explicit assessment of sustainable development of the economy-society-environment system can provide detailed insights into micro-level differences in resource distribution, environmental issues, and development levels within an area, thereby facilitating targeted intervention. However, existing evaluations of sustainable development primarily target national and subnational scales, which frequently struggle to account for local and regional differences—particularly in areas where policy interventions are most urgently required. To address this gap, we take 48 coastal prefecture-level cities in China as our research subject, and investigate the spatiotemporal variations in SDG performance through a spatially explicit evaluation method that considers evenness among all goals. The results showed overall improvement in the level of sustainable development in China's coastal cities from 2000 to 2020. Among them, Zhuhai, Jiaxing, Ningbo, Guangzhou, Zhongshan, and Qingdao maintained relatively sustainable development levels in this time. However, the magnitude of the trade-offs between SDG 9 and SDG 7 and SDG 13 increased, which highlights the urgency for Chinese coastal cities to accelerate technological innovation and transform their industrial models. Coastal cities with developed economies have greater potential to achieve SDGs, but also face bottlenecks due to unevenness among the goals. In particular, there are significant deficiencies in goals related to climate action. Nevertheless, coastal cities with relatively weak economies – mainly those located in the Guangxi and Liaoning provinces – performed well on SDGs related to the environment. Our spatially explicit assessment of sustainable development levels in major Chinese coastal cities enables targeted policy interventions by identifying regional disparities, thereby optimizing resource allocation and prioritizing actions in underperforming areas.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"272 ","pages":"Article 107984"},"PeriodicalIF":5.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145420361","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":"Impact and assessment of hydraulic rake trawling on benthic communities in Urechis unicinctus aquaculture zones, Laizhou Bay, China","authors":"Yuze Tang ,&nbsp;Erwann Legrand ,&nbsp;Jiaqi Li ,&nbsp;Haiqing Wang ,&nbsp;Ang Li ,&nbsp;Lulei Liu ,&nbsp;Zirong Liu ,&nbsp;Suyan Xue ,&nbsp;Shoutuan Yu ,&nbsp;Yuze Mao","doi":"10.1016/j.ocecoaman.2025.107969","DOIUrl":"10.1016/j.ocecoaman.2025.107969","url":null,"abstract":"<div><div>Hydraulic rake trawling is essential for <em>Urechis unicinctus</em> aquaculture. However, its ecological impacts on benthic ecosystems remain poorly understood, especially in China. This study used a Before-After-Control-Impact design to evaluate the effects of hydraulic rake trawling in Laizhou Bay, China. Sampling was conducted across high, low, and control harvesting intensities before, during, and four months after harvesting. Macrofaunal diversity metrics, such as total abundance, total biomass, species richness, Shannon-Wiener index, Margalef index, and dominance index, were analyzed using a two-way analysis of variance (ANOVA) and the Scheirer-Ray-Hare test(SHR). Community structure was assessed through non-metric multidimensional scaling (NMDS), analysis of similarities, similarity percentage, and permutational multivariate ANOVA (PERMANOVA). Benthic habitat health was assessed using multiple ecological indices, specifically the AZTI Marine Biotic Index (AMBI), Norwegian Sensitivity Index (NSI), Norwegian Quality Index 1 (NQI1), and Dredge Spoil Disposal Index (DSD). Significant temporal changes in macrofaunal diversity were observed. Species richness declined from 14.67 ± 2.08 to 3.00 ± 1.00 species during harvesting, recovering to 12.33 ± 0.58 species after harvesting. The Shannon-Wiener index decreased from 2.57 ± 0.15 to 1.27 ± 0.32 during harvesting, recovering to 2.33 ± 0.12 after harvesting. Dominant species shifted from <em>Paraprionospio pinnata</em> (EG IV) and <em>Umbonium thomasi</em> (EG Ⅱ) before harvesting to <em>Nephtys polybranchia</em> (EG Ⅱ) and <em>Iridona iridescens</em> (EG Ⅰ) during harvesting, and <em>Nephtys polybranchia</em> (EG Ⅱ) and Virgulariidae (EG Ⅰ) after harvesting. The dominant functional groups changed from F/D (Deposit -feeder) and M/C (Crawl) to F/P (Predator) and M/B (Burrow). Ecological indices mirrored these changes, showing declines during harvesting and subsequent recovery. These findings highlight the resilience and vulnerability of benthic ecosystems to hydraulic rake trawling.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"271 ","pages":"Article 107969"},"PeriodicalIF":5.4,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145321822","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}