Ocean & Coastal Management最新文献

{"title":"Shipment consolidation in assembly supply chains: Delivery delay, competition dynamics and resilience analysis","authors":"Baozhuang Niu,&nbsp;Chengwei Lai,&nbsp;Hongzhi Wang","doi":"10.1016/j.ocecoaman.2025.107928","DOIUrl":"10.1016/j.ocecoaman.2025.107928","url":null,"abstract":"<div><div>In practice, it is common for a brand to procure multiple components overseas and then assemble them into end products (even under recent threats of random shocks). Since most deliveries are conducted by maritime shipping companies and delivery delay is frequently confronted nowadays, shipment consolidation has been widely used to lower the probability of delivery delay, besides the benefit of delivery cost savings. In this paper, we investigate a multi-stakeholder system consisting of a local brand, one/two shipping companies, a global brand sourcing components overseas and two complementary component suppliers. We further develop supply chain resilience indexes to evaluate the cons and pros of the global brand's shipment consolidation strategy. We reveal that market competition plays a key role and the competition intensity has a non-monotonic effect on the global brand's production delay disadvantage and the cost-saving advantage under shipment consolidation strategy. Indeed, shipment consolidation enhances the global brand's supply chain resilience in most cases, but this strategy may be inefficient when the delivery delay probability is high. We further show that shipment consolidation can induce Pareto improvement situations for the stakeholders in the sense of supply chain resilience and profitability enhancement.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"271 ","pages":"Article 107928"},"PeriodicalIF":5.4,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145108646","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":"Nitrogen budget in a watershed-coastal ocean consortium near the Taiwan Strait: A model study in Han River watershed and its coastal water","authors":"Jinxu Xiang ,&nbsp;Heng Zhang ,&nbsp;Tong Li ,&nbsp;Zixuan Du ,&nbsp;Junlin Chen ,&nbsp;Zijian Zhang","doi":"10.1016/j.ocecoaman.2025.107932","DOIUrl":"10.1016/j.ocecoaman.2025.107932","url":null,"abstract":"<div><div>In recently decades, many coastal waters have experienced serious eutrophication due to rapid increase in nutrient fluxes in the coastal watersheds. Therefore, understanding the nutrient budget in the watershed-coastal water consortium is essential for effective coastal management. A coupled model consists of watershed model (SWAT) and ocean model with water quality module (ECOMSED + WASP5) was developed to investigate nitrogen budget on seasonal and annual timescales for the Han River Watershed (HRW) -Han River Estuary (HRE) consortium near the Taiwan Strait (TWS). Results showed that wet-season rainfall drove substantial nitrogen loss in the HRW, where nitrate leaching became the dominant nitrogen sink, accounting for approximately 36 % of the total nitrogen loss. Nitrogen retention rate in the HRW was about 80 %, and the other 20 % was transported to the HRE by runoff. The horizontal distributions of dissolved inorganic nitrogen (DIN) and organic nitrogen (ON) in the HRE generally followed the river plume and coastal currents. Nitrogen budgets in the HRE were dominated by physical processes while biogeochemical processes further regulated it. In summer, the nitrogen in the HRE mainly contributed by shelf upwelling, followed by riverine input; in the non-summer season, the nitrogen in the HRE was mainly contributed by the Zhe-Min Coastal Waters. In addition, the riverine DIN input was important in sustaining nitrogen cycling of the HRE. These findings highlight the need for seasonally adaptive management strategies for the HRE and its’ coastal waters, and demonstrates the importance of integrated watershed-coastal ocean modeling for effective eutrophication control in rapidly developing regions.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107932"},"PeriodicalIF":5.4,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104533","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":"Effects of different wave calculation methods on groundwater flow and salt transport in coastal aquifers under irregular waves","authors":"Weilun Chen ,&nbsp;Jun Kong ,&nbsp;Saihua Huang ,&nbsp;Huawei Xie ,&nbsp;Jun Wang","doi":"10.1016/j.ocecoaman.2025.107929","DOIUrl":"10.1016/j.ocecoaman.2025.107929","url":null,"abstract":"<div><div>This study evaluates the Nielsen set-up empirical equation's applicability for groundwater dynamics under irregular waves through numerical simulation, comparing phase-resolving and phase-averaged methods under three peak enhancement factor (γ) conditions. Key findings demonstrate that both numerical methods generate stronger horizontal pressure gradients than the empirical equation, yielding larger upper saline plume (USP) features (area, salt content) and greater saltwater penetration depths. The phase-averaged method produces more persistent pressure gradients, resulting in enhanced USP characteristics compared to the phase-resolving method, which promotes broader salt-freshwater mixing through wave-induced water level fluctuations. Reduced γ values correlate with more uniform wave energy distribution, amplifying swash extent and pore pressures, thereby intensifying USP quantities and method-dependent discrepancies. Interface flux analysis reveals phase-averaged conditions yield higher peak infiltration (30 % greater) and marginally stronger submarine groundwater discharge (SGD) than phase-resolving results, with γ reduction further accentuating these differences. The set-up empirical equation consistently underestimates flow and salt dynamics by 21∼53 % across main metrics (USP area: ∼53 %; mixing area: ∼49 %; SGD: ∼24 %; total influx: ∼21 %), demonstrating its unreliability for wave-groundwater coupling systems. These findings strongly support the need for physics-based numerical approaches in coastal aquifer management, particularly for regions experiencing intensified wave variability. The study establishes γ as a key modulator of USP dynamics and method selection criteria for subsurface transport modeling.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107929"},"PeriodicalIF":5.4,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104534","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":"Fisheries decision-makers’ perspectives on the use of historical data to inform assessment and management","authors":"Ilse A. Martínez-Candelas ,&nbsp;Alejandro Espinoza-Tenorio ,&nbsp;Loren McClenachan","doi":"10.1016/j.ocecoaman.2025.107908","DOIUrl":"10.1016/j.ocecoaman.2025.107908","url":null,"abstract":"<div><div>The lack of historical perspectives has hindered effective fisheries management. Historical data can help address shifted baselines in fisheries, but the process of integrating historical data into fisheries decision-making has not been clear in part because the data needs of decision-makers have not been assessed. Using Mexico as a case study, we conducted interviews with fisheries decision-makers to identify the current use of historical data, data needs, and pathways for integrating historical data into fisheries decision-making. We found that some historical data are currently used for decision-making, with the earliest archival data in use deriving from the 1850s. However, we also found that additional historical data existed for many fisheries that were not used, with an average of almost 30 years of data gap between the oldest data that exist and the oldest data used. Fisheries decision-makers described a need for six different types of historical information: catch, socioeconomic, biological, ecological, spatial and technological. Together respondents describe nine interrelated pathways to integrate historical data into fisheries decision-making both within and outside of the management structure, and identify 43 specific fisheries management contexts in which historical data would benefit decision-making. This research uses experts’ knowledge to illustrate how historical data can be used to improve fisheries management beyond the theoretical pathways and highlights the need for collaborative research to identify, collect, and apply the best available information in fisheries decision-making.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107908"},"PeriodicalIF":5.4,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104536","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":"Biodiversity and conservation of elasmobranchs in the Mascarene Islands: Policy implementation and protection strategies","authors":"Estelle Crochelet ,&nbsp;Océane Desbonnes ,&nbsp;Laure Inçaby ,&nbsp;Nadeem Nazurally ,&nbsp;Guy Stevens ,&nbsp;David van Beuningen ,&nbsp;Jean Gadenne ,&nbsp;Gaetan Morand ,&nbsp;Geoffrey Bertrand ,&nbsp;Natacha Nikolic","doi":"10.1016/j.ocecoaman.2025.107921","DOIUrl":"10.1016/j.ocecoaman.2025.107921","url":null,"abstract":"<div><div>Although the Mascarene Archipelago is considered one of the main marine biodiversity hotspots in the Indian Ocean, the elasmobranch species residing in these waters remain poorly understood. It is crucial to fill these information gaps to better inform actions for their conservation and management. The Mascarene Archipelago Elasmobranch Observatory (MAEO) program established an elasmobranch sighting network involving several ocean user groups across Réunion, Mauritius and Rodrigues islands. Additionally, active searches on social media contributed to an increase in elasmobranch observations. In parallel, remote underwater video systems (both baited and unbaited) and underwater visual census surveys were performed. From 2021 to 2024, 1615 elasmobranch sightings were reported, including two species newly recorded for Réunion, one for Mauritius, and one species new to science. Of the 67 elasmobranch species known in the Mascarenes (updated list from this study), 32 species (47.8 %) were recorded in this study. Among the total 67 species, 42 (62.7 %) are classified as threatened with extinction according to the IUCN Red List of Threatened Species. A review of current legislation in Réunion and Mauritius indicates that while some regulations exist to protect elasmobranchs, they are often poorly understood or inadequately enforced. Strengthening and enforcing fishing regulations is crucial. Moreover, raising public awareness and education is key to enhancing elasmobranch protection. Considering this, significant efforts have been made to promote the MAEO program and engage the public across the region. After three years, the findings provide useful information to inform effective conservation measures for elasmobranchs in the Mascarenes. Simultaneously, the results underscore the need for further research on these species in this region.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107921"},"PeriodicalIF":5.4,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104539","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":"Spatial zoning of shoreline management plan of the northern Persian Gulf","authors":"Mohammadreza Gharibreza ,&nbsp;Amin Salehpourjam ,&nbsp;Ali Nasrollahi ,&nbsp;Jamal Mosaffaie","doi":"10.1016/j.ocecoaman.2025.107925","DOIUrl":"10.1016/j.ocecoaman.2025.107925","url":null,"abstract":"<div><div>A shoreline management plan (SMP) implies thematic actions to conserve natural resources and sustainable development. The research aimed to achieve optimized spatial zoning of the SMP along the Bushehr Province, Persian Gulf, Iran. The research method includes computing sea flood level combining elevations of the high astronomic tide (HAT), the storm set-up, the wave set-up, and the climate change-induced sea-level rise, and the depth of closure (DoC) to set upper and lower boundaries of SMP spatial zoning. The SMP longitudinal limits divide based on sedimentary cells, sub-cells, and shore sections considering governing littoral drifts, the possibility of sediment bypassing, and natural and artificial trap restrictions. Results imply spatial zoning of a 2,854,250-ha area of the Boushehr coastal watersheds, including three sedimentary cells, 16 sub-cells, and 36 shore sections. The maximum and minimum sea flood levels (100-year return period) as the hazard line for precaution and management considerations in the northern Persian Gulf vary between 4.25 m and 3.11 m, introduced sea flood zones of 80,379.38 ha and 61,013.25 ha spatially in sediment cell-1 and sediment cell-2. Seaside the SMP management units introduced to DoC of 48,280.51 ha, 67,190.17 ha, and 442 ha in sediment cell-1, sediment cell-2, and sediment cell-3, which vary depths between 5.27 m and 3.03 m. The research method is a guideline for sea-oriented development, especially for coastal watershed management, optimal placement of prosperity and population loading, and prevention of environmental hazards.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107925"},"PeriodicalIF":5.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104535","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":"Cruise passengers’ expenditure in Uruguay: A cross-section data analysis","authors":"Juan Gabriel Brida ,&nbsp;David Matesanz Gómez ,&nbsp;Verónica Segarra","doi":"10.1016/j.ocecoaman.2025.107926","DOIUrl":"10.1016/j.ocecoaman.2025.107926","url":null,"abstract":"<div><div>In recent years, the cruise industry has gained relevance in Uruguay's political debate, but the impact this activity has on the Uruguayan tourism economy is still unclear. This study analyzes one of the components of the economic impact of cruises on a destination: the expenditure of cruise passengers who disembark at Uruguayan ports. To this end, two cross-sectional regression models are estimated to explore the extensive and intensive spending decisions of cruise passengers who disembark at the ports of Punta del Este and Montevideo. The paper shows that the nationality of the interviewee, the port of disembarking and whether they travel in a group, are the most important variables in explaining individual spending behavior. Based on the economic analysis, the study suggests some management recommendations that destination policymakers could implement to improve the economic benefits of cruise tourism in Uruguay.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107926"},"PeriodicalIF":5.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104538","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":"Beyond single drivers: A multi-stressor framework for understanding and managing jellyfish proliferation under concurrent anthropogenic and climate pressures","authors":"Clémence Epinoux ,&nbsp;Delphine Bonnet ,&nbsp;Sandra Bringay ,&nbsp;Matthieu de Castelbajac ,&nbsp;Eduardo Ramirez-Romero ,&nbsp;Arnaud Sallaberry ,&nbsp;Marco Scotti ,&nbsp;Maximilien Servajean ,&nbsp;Juan-Carlos Molinero","doi":"10.1016/j.ocecoaman.2025.107927","DOIUrl":"10.1016/j.ocecoaman.2025.107927","url":null,"abstract":"<div><div>The Mediterranean Basin is a biodiversity hotspot increasingly threatened by anthropogenic pressures, such as coastalization, overfishing, and climate change. These stressors may contribute to jellyfish blooms, which jeopardize marine ecosystems and the services they provide. Yet, their combined effects remain poorly understood. This study models the responses of two jellyfish with contrasting thermal preferences, <em>Rhizostoma pulmo</em> and <em>Aurelia</em> spp., to global changes occurring in the Western Mediterranean Sea between 2004 and 2020. The loop analysis method was used to assess the combined effects of multiple anthropogenic pressures on the abundance of jellyfish and the model outputs were compared with the observed dynamics of both jellyfish. Results suggest that global change favored <em>R. pulmo</em> proliferation during the study period, whereas <em>Aurelia</em> spp. abundance did not show much change. The effects of different fishing effort scenarios on jellyfish blooms were also modeled to provide Western Mediterranean stakeholders with keys to remediation. While increased fishing effort in a context of global change is expected to foster jellyfish proliferation, reducing fishing pressure alone is unlikely to curb their abundance, because of the influence of concurrent antagonistic drivers. Our results highlight the multifactorial nature of jellyfish blooms and the need for integrated approaches to mitigate their proliferation. This study contributes to the objectives of the EU's Marine Strategy Framework Directive by improving the understanding of jellyfish as indicators of ecosystem imbalance and informing ecosystem-based management strategies.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107927"},"PeriodicalIF":5.4,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145104537","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":"Multi-criteria carbon emission allowance allocation for liner shipping companies in China: An integrated approach based on composite indicators and zero-sum gains DEA","authors":"Mo Zhu ,&nbsp;Yuquan Du ,&nbsp;Mei Sha ,&nbsp;Yiwen Jiang ,&nbsp;Zhongdai Wu ,&nbsp;Bing Han","doi":"10.1016/j.ocecoaman.2025.107909","DOIUrl":"10.1016/j.ocecoaman.2025.107909","url":null,"abstract":"<div><div>Carbon emission allowance (CEA) allocation mechanisms balancing equity, efficiency, and sustainability principles are central to effective carbon emission trading markets. When national or regional carbon emission trading markets extend to the shipping industry, allocating suitable volumes of CEAs to different shipping companies plays a fundamental role in system effectiveness. The allocation practice of Shanghai Pilot Carbon Emissions Trading based on the single allocation rule of historical carbon intensity has shown limitations in balancing multiple allocation objectives. This study aims to address this limitation by proposing a new CEA allocation mechanism that incorporates multiple indicators and seeks to balance the principles of fairness, efficiency and sustainability. This mechanism consists of a composite-index method for initial CEA allocation and a zero-sum gains data envelopment analysis (ZSG-DEA) model with carbon efficiency optimization to adjust CEA allocation to shipping companies. The case study focusing on liner shipping companies in China suggests that the proposed allocation mechanism can encourage large companies with high-carbon emissions to bear more reduction pressure while supporting companies with superior carbon efficiency to receive proportionally higher allowances. The methodology demonstrates potential for adaptation to other shipping segments and can support governments in incorporating maritime shipping sectors into carbon emission trading systems while facilitating international coordination.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107909"},"PeriodicalIF":5.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059989","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":"Precarity between a megacity and coastal erosion: A political economy of (un)managed retreat pathways in Thailand's peri-urban Khun Samut Chin","authors":"Danny Marks ,&nbsp;Carl Middleton ,&nbsp;Orapan Pratomlek","doi":"10.1016/j.ocecoaman.2025.107919","DOIUrl":"10.1016/j.ocecoaman.2025.107919","url":null,"abstract":"<div><div>This paper investigates the complexities of adaptation strategies in the coastal peri-urban community of Khun Samut Chin (KSC), Thailand, amidst the challenges posed by coastal erosion. Employing a political economy lens, the study examines the interplay between state policies, community dynamics, and external economic influences that shape various adaptation pathways. Through a multilevel analysis, five historically contingent pathways are identified: economy-centred national development, state-led provincial coastline defence, rising household precarity, community resilience initiatives, and forced self-initiated outmigration. The findings detail how ‘managed retreat’ is not always (pro)actively ‘managed’ by the state and that state-led initiatives often fail to address the community's priorities effectively, reflecting how power imbalances favor the state over community. This raises questions towards state accountability and addressing social injustices. We argue that understanding these dynamics through a political economy pathways approach reveals how current governance and accountability issues are not isolated or ahistorical. Rather, long-standing systemic factors shape present conditions and future possibilities.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"270 ","pages":"Article 107919"},"PeriodicalIF":5.4,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145059990","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}