Regional Studies in Marine Science最新文献

{"title":"Local freshwater fluxes determine salinity variations of the Bohai Sea: Based on 60 years of observations","authors":"Fengying Ji ,&nbsp;Xuejun Xiong ,&nbsp;Jinkun Yang ,&nbsp;Yulong Liu ,&nbsp;Luyao Han ,&nbsp;Mingmei Dong ,&nbsp;Shanshan Xu","doi":"10.1016/j.rsma.2024.103899","DOIUrl":"10.1016/j.rsma.2024.103899","url":null,"abstract":"<div><div>Salinity, a fundamental characteristic of seawater, significantly influences the ocean's physicochemical properties and directly affects marine biodiversity and its spatial distribution. The semi-enclosed Bohai Sea is home to diverse marine organisms and serves as a critical area for human mariculture. Salinity variations in this region are crucial for the stability of the ecosystem and the sustainability of the marine economy. However, significant discrepancies have been observed between the practical salinity measurements of the Bohai Sea in winter 2007 and that recorded in widely used national and international marine atlases prior to 2000. To identify these discrepancies, this study systematically investigates the salinity variations and the regulatory mechanisms in the Bohai Sea. First, we constructed a climatological salinity dataset with a broader temporal scope based on in-situ salinity data from 1960 to 2020, confirming that the climatological salinity field of the Bohai Sea did not undergo a significant shift, but exhibited phase changes. Subsequently, using the principles of conservation of mass and salinity, we developed a box model to analyze annual salinity changes in the Bohai Sea. This model was optimized using in-situ hydrological measurements and reanalysis data spanning over 60 years, successfully revealing the central regulatory role of local freshwater fluxes in annual salinity changes in the Bohai Sea. Furthermore, we elucidated that the anomalously high salinity in the Bohai Sea in the winter of 2007 resulted from the cumulative effect of several consecutive years of negative freshwater fluxes. The results of this study not only enhance our understanding and prediction of salinity changes in semi-enclosed seas, providing a scientific basis for ecosystem protection and management, but also offer valuable insights for studying long-term salinity changes in other semi-enclosed seas.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103899"},"PeriodicalIF":2.1,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distribution and air-sea fluxes of CO2 in coral reefs in the Greater Bay Area, China","authors":"Hongqiang Yan ,&nbsp;Shichen Tao ,&nbsp;Lijia Xu ,&nbsp;Qi Shi ,&nbsp;Yongzhi Wang ,&nbsp;Meixia Zhao ,&nbsp;Shengnan Zhou ,&nbsp;Xiaoju Liu","doi":"10.1016/j.rsma.2024.103895","DOIUrl":"10.1016/j.rsma.2024.103895","url":null,"abstract":"<div><div>From May to June 2021, the sea surface partial pressure of CO₂ (<em>p</em>CO₂) and air-sea CO₂ fluxes around six coral reefs in the Great Bay Area (contain Pearl River Estuary (PRE) and Daya Bay) were investigated respectively. The distribution of seawater <em>p</em>CO₂ around different coral reefs were quite different. The seawater <em>p</em>CO₂ of the coral reef region of Daya Bay is relatively high, ranging from 268 to 496 µatm. In contrast, the <em>p</em>CO₂ levels in the coral reef area of the PRE are significantly lower, with measurements ranging from 84 to 374 µatm. Further analysis showed that the distribution of seawater <em>p</em>CO₂ around the coral reefs of the PRE were mainly affected by biological metabolism and seawater mixing, while those in Daya Bay were mainly controlled by temperature and seawater mixing. During the survey, the three coral reefs in the PRE were affected by algal blooms showing strong sinks of atmospheric CO₂ ranging from −12.3 to −19.2 mmol CO₂ m⁻² d⁻¹. However, the difference between the seawater <em>p</em>CO₂ and atmospheric <em>p</em>CO₂ in the three coral reefs of Daya Bay were all very small, and they were weak sources or sinks of atmospheric CO₂, respectively.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103895"},"PeriodicalIF":2.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573338","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":"Environmental monitoring of phthalic acid esters in northwest Persian Gulf estuary: Concentrations, distribution, and risk assessment","authors":"Nabi Salehzadeh ,&nbsp;Kamal Ghanemi ,&nbsp;Yadollah Nikpour ,&nbsp;Hossein Pasha-Zanoosi","doi":"10.1016/j.rsma.2024.103897","DOIUrl":"10.1016/j.rsma.2024.103897","url":null,"abstract":"<div><div>The present study investigates the concentration level, distribution, and risk assessment of six high-priority phthalic acid esters (PAEs) in seawaters and sediments of the Musa estuary, northwest of the Persian Gulf, Iran. Additionally, the industrial and urban effluents terminating in this estuary were also analyzed. The overall variations of Σ₆PAEs were 10.65–164.80 µg/L in seawaters, 0.53–26.18 µg/g in sediments, and 181.09–764.57 µg/L in effluent samples. Di–n–butyl phthalate (DnBP) and di(2–ethylhexyl) phthalate (DEHP), together accounted for 57.2 %–99.5 % and 59 %–100 % of the Σ₆PAEs concentrations in seawaters and sediments, respectively. A relatively similar trend was also detected in the effluent waters. While industrial runoffs exhibited greater shares and concentrations compared to urban areas, the levels of PAEs were higher in waters and sediments near urban regions due to restricted water circulation. A significant correlation was found (<em>r</em> = 0.8385) between Σ₆PAEs in seawater and sediment. Given its consistent detection frequency of 100 % across all stations, DEHP can be served as a reliable indicator for PAE contamination. In nearly all stations, the pollution levels of DnBP and DEHP exceeded the environmental risk level (ERL). The ecological risk quotient (RQ) for at least two PAEs appeared at medium to high levels in both seawaters and sediments. Establishing baseline data on PAEs in the Musa estuary will guide future strategies for pollutant control across the Persian Gulf network.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103897"},"PeriodicalIF":2.1,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142592665","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":"Data-driven optimization of coastal sea level monitoring: Leveraging known patterns for enhanced reconstruction","authors":"Elif Kartal,&nbsp;Abdüsselam Altunkaynak,&nbsp;Anıl Çelik","doi":"10.1016/j.rsma.2024.103878","DOIUrl":"10.1016/j.rsma.2024.103878","url":null,"abstract":"<div><div>Efficiently configuring sea level monitoring stations is crucial for obtaining accurate spatiotemporal data while managing operational and maintenance costs and addressing the challenges posed by missing data. This study focuses on optimizing the selection of stations within Turkey's coastal sea level monitoring network by leveraging the inherent lower dimensionality in data. The network consists of 18 stations distributed along Turkey's coastline. To identify dominant patterns in historical sea level data, Empirical Orthogonal Function (EOF) analysis was employed, followed by the application of the QR decomposition with column pivoting algorithm. Model performance is assessed using the Nash-Sutcliffe coefficient of efficiency (CE) and root mean square error (RMSE). Remarkably, the results demonstrated that reconstructing the entire dataset, encompassing all 18 stations was possible with a CE of 0.94 and an RMSE of 0.06. Even utilizing data from two or three stations alone achieves acceptable reconstruction accuracy. The effectiveness of EOF analysis combined with QR with column pivoting algorithm suggests promising applications in various scientific fields.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103878"},"PeriodicalIF":2.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A checklist of marine phytoplankton species of Northeast Brazil","authors":"Claire Carré ,&nbsp;Pedro Augusto Mendes de Castro Melo ,&nbsp;Béatrice Bec ,&nbsp;Leandro Ferreira Cabanez ,&nbsp;Isis Amália Cordeiro ,&nbsp;Gabriel Bittencourt Farias ,&nbsp;Marina Cavalcanti Jales ,&nbsp;Sírleis Rodrigues Lacerda ,&nbsp;Nayana Buarque Antao Silva ,&nbsp;Monique Simier ,&nbsp;Maria da Glória Gonçalves Silva-Cunha ,&nbsp;Arnaud Bertrand","doi":"10.1016/j.rsma.2024.103887","DOIUrl":"10.1016/j.rsma.2024.103887","url":null,"abstract":"<div><div>The oceanic zone of Northeast Brazil in the southwestern tropical Atlantic Ocean is characterised by the presence of a variety of current systems. Thus, it has the potential to host a large diversity of phytoplankton species. In this context, we propose a comprehensive checklist of documented marine phytoplankton species in this region. To this end, we have compiled all the published material and supplemented it with original data from two comprehensive surveys, the ABRAÇOS surveys, covering the shelf, slope, and offshore areas of Northeast Brazil. Even if few articles were atrieved from our review research, a total of 719 phytoplankton taxa are reported, including 98 new records plus 45 potential new records from the ABRACOS data. Most taxa are accompanied by a comprehensive library of illustrations. The two major phytoplankton groups, dinoflagellates and diatoms, contributed similarly to the total checklist richness, which is consistent with the global phytoplankton diversity. The contribution of nano- and microphytoplankton varies between areas. The shelf displays a greater diversity of pennate and small/medium-sized diatoms. This may be attributed to the inputs from estuarine rivers as well as the resuspension of benthic diatoms. Conversely, dinoflagellates are more prevalent offshore, demonstrating their adaptability to changing nutritional conditions, by employing numerous metabolic and growth strategies to survive. This checklist, which reveals an remarkable diversity of nano- and microphytoplankton in Northeast Brazil, provides a valuable reference for scientists and managers to monitor community evolution under global change<strong>.</strong></div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103887"},"PeriodicalIF":2.1,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal evolution and adaptive cycle of marine economy resilience in Bohai Rim Region","authors":"Jinghui Wu ,&nbsp;Bo Li ,&nbsp;Lixiao Zhang ,&nbsp;Yi Qu","doi":"10.1016/j.rsma.2024.103893","DOIUrl":"10.1016/j.rsma.2024.103893","url":null,"abstract":"<div><div>The sustainable and healthy development of the marine economy is increasingly restricted by frequent global risk disturbances. Therefore, it is urgent to conduct research on the resilience of marine economic systems to effectively address such crises. Based on scientific connotation of marine economy resilience, we established an evaluation model encompassing four dimensions: resistance, recovery, readjustment, and update. Using the adaptive cycle model, we analyzed the spatio-temporal evolution and stages of marine economy resilience at the regional, provincial, and municipal levels within the Bohai Rim Region from a multi-dimensional perspective. Our findings were as follows: (1) The evolution of the resistance dimension of marine economy resilience in the Bohai Rim Region exhibited higher volatility, while the other dimensions demonstrated favorable development trends. (2) Compared to Tianjin-Hebei and Shandong, Liaoning was more susceptible to disturbances, with the update dimension being the dominant contributor to overall resilience at the provincial level. (3) At the municipal scale, both resistance and update capabilities displayed significant spatial correlation patterns. (4) Cangzhou, Yantai, Binzhou, Weifang, Rizhao, Qinhuangdao and Tangshan experienced both positive and reverse transformation cycle, while the other cities were in a positive cycle. Finally, we proposed targeted policy recommendations for each evolutionary stage. These findings provide theoretical insights and practical foundations for enhancing marine economy resilience in the Bohai Rim Region, promoting the high-quality development, and supporting the construction of a maritime power.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103893"},"PeriodicalIF":2.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554304","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":"The evaluation of C, N, P release and contribution to the aquatic environment during Sargassum litters biomass decay","authors":"Zhangbin Liu ,&nbsp;Jianqu Chen ,&nbsp;Jian Zhang ,&nbsp;Kai Wang ,&nbsp;Shouyu Zhang","doi":"10.1016/j.rsma.2024.103892","DOIUrl":"10.1016/j.rsma.2024.103892","url":null,"abstract":"<div><div><em>Sargassum</em> is an important economic species in China, but its decomposition can impact the water environment in aquaculture areas and adjacent seas. To investigate the effects of <em>Sargassum</em> litters on the water environment, a 48-day in situ experiment (ISE) and a Laboratory-Controlled Experiments (LCE) were conducted. Changes in dissolved oxygen, nitrogen, and phosphorus levels in the water, as well as variations in the carbon (C), nitrogen (N), and phosphorus (P) content, lignin, cellulose, hemicellulose, and mass of <em>Sargassum</em> during decomposition, were assessed. The results indicated that <em>Sargassum</em> decomposition occurred in two phases: rapid and slow. <em>Sargassum</em> decomposed more rapidly and completely under ISE compared to LCE. In ISE, the mass and C, N, and P contents of <em>Sargassum</em> declined, with P being released earlier than C and N. By day 8, the P content had decreased by 40.91 % in <em>S. fusiforme</em> and 31.97 % in <em>S. thunbergii</em> relative to the initial values. The lignin and hemicellulose content of <em>S. fusiforme</em> exhibited minimal changes before and after decomposition under both ISE and LCE (<em>p</em> &gt; 0.05). In <em>S. thunbergii</em>, the cellulose and hemicellulose content remained relatively stable under both ISE and LCE (<em>p</em> &gt; 0.05). In LCE, dissolved oxygen in the water quickly decreased, while nitrogen and phosphorus concentrations increased. The cumulative release of TN and TP per unit mass was 14.759 mg·g⁻¹ and 10.196 mg·g⁻¹ for <em>S. fusiformis</em>, and 12.752 mg·g⁻¹ and 5.693 mg·g⁻¹ for <em>S. thunbergii</em>, respectively. It was inferred that <em>Sargassum</em> decomposition could adversely affect N and P levels in the water environment. In recent years, <em>Sargassum</em> blooms have frequently occurred in the East China Sea. Therefore, it is recommended to appropriately remove dead <em>Sargassum</em> in high-density cultivation areas to prevent N and P pollution from seaweed decomposition.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103892"},"PeriodicalIF":2.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the environmental impacts of land use change in the conservation area of Indonesian National Park using life cycle assessment","authors":"Anisah Anisah ,&nbsp;Yoyon Wahyono ,&nbsp;Novy Ariyanto ,&nbsp;Nugroho Adi Sasongko ,&nbsp;Isnaeni Kumalasari ,&nbsp;Virny Zasyana Eka Putri ,&nbsp;Martin Anda ,&nbsp;Mutia Citrawati Lestari ,&nbsp;Lambas Parlaungan Panggabean ,&nbsp;Rohmadi Ridlo ,&nbsp;Sundari Sundari ,&nbsp;Anissa Dewi Suryaningtyas ,&nbsp;Endah Dwi Novianti ,&nbsp;Muhammad Raihan Farras Hakim ,&nbsp;M. Arief Rahman Halim ,&nbsp;Hashfi Hawali Abdul Matin ,&nbsp;Dita Ariyanti","doi":"10.1016/j.rsma.2024.103889","DOIUrl":"10.1016/j.rsma.2024.103889","url":null,"abstract":"<div><div>The Karimunjawa National Park (KNP) conservation area is facing the challenge of evolving land use change, which can potentially cause substantial environmental impact. This study examines the potential environmental impact of emissions from land use change on three major Island using methods released by the European Commission in 2010, as well as the potential environmental impact in nine stations using OpenLCA 2.0 software with the Ecoinvent 3.8 database. Impact assessment method utilized CML-IA baseline and EPS 2015d. The results of this study indicate significant emissions of greenhouse gases (GHGs) linked to land-use changes. Karimunjawa and Kemujan Island exhibit the highest emissions, at 32,424.07 t<span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>. Offsetting these emissions would necessitate mangrove planting encompassing 4.01 ha. Nyamuk and Parang Islands follow with emissions of 19,269.98 t<span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> and 18,473.92 t<span><math><msub><mrow><mi>CO</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span>, requiring 2.38 ha and 2.28 ha of mangrove restoration for net zero emissions, respectively. The study also reveals environmental impacts and their main contributors, namely Eutrophication is 3.98E-6 kg <span><math><msub><mrow><mi>PO</mi></mrow><mrow><mn>4</mn></mrow></msub></math></span>--- eq and the main kontributor is Phosphorus (P); Marine ecotoxicity is 2.14E+01 kg 1.4-DB eq and the main cause is Cobalt (Co) at Menjangan Besar Island (C1 Station). The highest environmental impact is on Kemujan Island (B1 Station) and Menjangan Besar Island (C1 Station). Then, species extinction is 1.19E-21 NEX and the primary kontributor is Biological Oxygen Demand (BOD5) at Kemujan Island (B1 Station). It is imperative to halt the conversion of mangrove land into fishponds in KNP to mitigate the effects of environmental damage.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103889"},"PeriodicalIF":2.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573339","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":"Influence of tidal asymmetry on local scour near the offshore platform","authors":"Byeong Jin Jeon ,&nbsp;Seong Woon Jeong ,&nbsp;Insung Jeon ,&nbsp;Ho Kyung Ha","doi":"10.1016/j.rsma.2024.103891","DOIUrl":"10.1016/j.rsma.2024.103891","url":null,"abstract":"<div><div>An <em>in-situ</em> mooring measurement was conducted using a profiling sound of navigation and ranging (SONAR) system to reveal the influence of tidal asymmetry on the local scour near an artificial offshore platform, Southwest Offshore Windfarm Complex, Korea. During the mooring period, the flood tide was significantly dominated by positive tidal duration asymmetry and skewness. The lengths of scour hole were 9.8 m and 5.1 m along the flood and ebb directions, respectively. Flood-dominated currents intensified the horseshoe vortex, resulting in an approximately 10% deeper scour hole on the flood face than the ebb face. The periodic occurrence of bidirectional currents generated vortices that facilitated the mixing and redistribution of seabed sediments, forming a gentle slope within the scour hole. The average slope angles ranged from 14° to 16° on the flood face and 6° to 8° on the ebb face. Despite the strong influence of local scour, variations in scour depth (<em>D</em>_s) consistently remained around −2.15 m, suggesting the exposure of the underlying consolidated sediment layer. During the intermediate period from spring to neap tide, the <em>D</em>_s on the lower slope of scour hole increased by 0.12 m, while it decreased by 0.11 m from neap to spring tide, suggesting that the net <em>D</em>_s gradually approached zero over the tidal cycle. These findings underscore the importance of understanding tidal impacts on the local scour morphology to enhance the stability and design of offshore wind turbine foundations.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103891"},"PeriodicalIF":2.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A trophic modelling framework: Key metrics for the ecological assessment of artificial structures","authors":"Aurore Raoux ,&nbsp;Jessica Salaün ,&nbsp;Jean-Philippe Pezy ,&nbsp;Baptiste Vivier ,&nbsp;Maxime Navon ,&nbsp;Maël Deloor ,&nbsp;Pascal Claquin ,&nbsp;Sylvain Pioch ,&nbsp;Nathalie Niquil ,&nbsp;Jean-Claude Dauvin","doi":"10.1016/j.rsma.2024.103890","DOIUrl":"10.1016/j.rsma.2024.103890","url":null,"abstract":"<div><div>As the global population expands, marine coastal ecosystems face mounting pressures from human activities, that have led to habitat deterioration and dwindling fishery resources. In this context, Artificial Reefs (ARs) have emerged as one of the promising solutions. They are generally implemented to provide habitat, to create a protective, physical boundary, to support sustainable fisheries and to facilitate ecosystem rehabilitation. Evaluating their ecological performance is crucial to ensuring they meet their objectives. Initially, assessment relied on comparing ARs to natural reefs using mainly ecological metrics which focused on fish assemblage and dynamics. Despite there being more research and documentation on effectiveness today, assessing ARs remains challenging due to the number of environmental factors that can affect the ecological systems. Moreover, ecological studies mainly used metrics that investigated the reef fish populations or ecological metrics such as fish assemblages or trophic structure that are often overlooked in studies that primarily focus on commercial fishery dynamics. Therefore, new ways of assessing artificial reef performance and the set-up of comprehensive metrics which integrate this level of complexity are needed. In this study, we focused on the \"Rade de Cherbourg\" in the English Channel, employing a trophic modeling approach using Ecopath with Ecosim (EwE). The study emphasizes the importance of Ecological Network Analysis (ENA) metrics for evaluating changes in the systems’ properties—such as complexity, flow diversity, and recycling capacity— which result from AR implementation. Furthermore, we identified which metrics are suitable for assessing specific AR objectives. The proposed metrics serve as a command-and-control tool for AR site managers, enabling them to evaluate the performance of each AR objective effectively. With the anticipated increase in AR projects, especially those which compensate for human impact like the Cherbourg ARs, this research offers valuable insights and future perspectives to continuously improve the ecological performance of ARs.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"80 ","pages":"Article 103890"},"PeriodicalIF":2.1,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142573337","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}