Regional Studies in Marine Science最新文献

{"title":"Evaluation of shrimp farming impacts on the water quality of the Lower São Francisco watershed region, Brazil","authors":"Rômulo André Santos Silva ,&nbsp;Gustavo Andrade Araujo Oliveira ,&nbsp;Joel Marques da Silva ,&nbsp;Igor Santos Silva ,&nbsp;Carlos Alexandre Borges Garcia ,&nbsp;Marcos Vinicius Teles Gomes ,&nbsp;Adnívia Santos Costa Monteiro ,&nbsp;Silvânio Silvério Lopes da Costa","doi":"10.1016/j.rsma.2024.103933","DOIUrl":"10.1016/j.rsma.2024.103933","url":null,"abstract":"<div><div>Shrimp farming is one of the fastest growing economic and production activities worldwide, generating both income and development. Principal component analysis (PCA) was applied to assess the effects of shrimp farming on the water quality of catchment, nursery and drainage points in shrimp farms located at the low São Francisco River, one of the most promising regions in Brazil for shrimp production. Physicochemical parameters, including the analysis of cations and anions, were determined at four shrimp farms in the municipalities of Igreja Nova/AL (F1), Propriá/SE (F2) and Brejo Grande/SE (F3 and F4) during four sampling campaigns carried out in the period from October 2018 to July 2019. Electric conductivity, turbidity and total dissolved solids presented statistically significant variations (ANOVA, p&lt;0.05), demonstrating the influence of shrimp feed use, ionic pond regulation and bioturbation carried out by the farmed crustaceans in rearing ponds. Chemical and biochemical oxygen demand, total organic carbon, total phosphorus, NO₃^- and NO₂^- values demonstrate the presence of high organic material, nitrogen and phosphorus concentrations, mainly at the nursery and drainage sampling points. The PCA revealed three main groups responsible for 75.1 % of the total data variation, characterized by organic, nitrogenous and ionic parameters, indicating water contamination by shrimp farming activities, with similarities between drainage points. This ground-breaking study showed that the progressive development of shrimp farming in the study region has the potential to adversely affect water quality if preventive and control measures are not put in place.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103933"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143171349","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":"Exploring the association between the arrow crab Stenorhynchus lanceolatus (Brullé, 1837) and the sea anemone Telmatactis cricoides (Duchassaing, 1850) in the Canary Islands","authors":"E. Peraza ,&nbsp;J.A. Pérez ,&nbsp;B. Abdul-Jalbar ,&nbsp;J. Chinea ,&nbsp;S. Clemente","doi":"10.1016/j.rsma.2024.103942","DOIUrl":"10.1016/j.rsma.2024.103942","url":null,"abstract":"<div><div>Symbiotic relationships are common in marine ecosystems, especially between cnidarians and crustaceans. This study explored the association of the arrow crab <em>Stenorhynchus lanceolatus</em> with different hosts in the Canary Islands, focusing on the relationship with the sea anemone <em>Telmatactis cricoides</em>. Field surveys and laboratory experiments were conducted to assess crab preference among potential hosts (anemones and sea urchins), association rates and behaviours of crabs interacting with the anemone. Field results revealed similar prevalence on anemones and sea urchins, and that most crabs associated to the anemone were solitary females. However, under laboratory conditions, sea urchins were observed to be preferred as hosts, but association with anemones were more stable in time, although its colonization period was slower, likely due to their toxicity and lack of environmental cues. Additionally, crab intraspecific competition seemed to favour the association with the anemone. This study showed the mutualistic and facultative nature of the relationship between <em>S. lanceolatus</em> and <em>T. cricoides,</em> advancing our understanding of benthic ecosystems dynamics<em>.</em></div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103942"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143171350","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":"Alpha and beta diversity patterns of the reef fishes’ early life stages and conservation implications in the Abrolhos Bank, Brazil","authors":"André L.R. Lima ,&nbsp;Carlos W. Hackradt ,&nbsp;Ramón Hernandez-Andreu ,&nbsp;Germano H.C. Barrilli ,&nbsp;Alexandre Schiavetti ,&nbsp;Fabiana C. Félix-Hackradt","doi":"10.1016/j.rsma.2025.104014","DOIUrl":"10.1016/j.rsma.2025.104014","url":null,"abstract":"<div><div>Coral reefs and associated habitats, such as mangroves, seagrass beds, and rhodolith beds, provide vital ecosystem services but are among the most threatened marine areas. This has led to a decline in the abundance of many reef-associated organisms, particularly coral reef fish. Understanding the dynamics of settlement and recruitment in reef fishes and their relationship with habitat is therefore essential for their conservation. Achieving ecosystem and species conservation objectives requires prioritizing areas with greater species richness and diversity, alongside those with higher densities of species threatened by exploitation at local and regional scales. In this study, we analyzed the alpha and beta diversity patterns of postlarval and juvenile coral reef fish in the Abrolhos Bank. Using light traps and underwater visual censuses (UVCs), we assessed diversity indices and decomposed beta diversity into turnover and nestedness components to explore spatial dynamics and habitat relationships. Our findings provide pioneering insights into the alpha and beta diversity patterns of postlarval and juvenile coral reef fishes in the Abrolhos Bank, revealing spatial variation in fish assemblages across sites. Beta diversity was predominantly driven by the turnover component, indicating significant species replacement between locations. Rhodolith beds and coastal reefs, such as Cassurubá and Paredes Parcel, were identified as critical habitats for maintaining fish stocks. We recommend prioritizing these areas in conservation strategies and promoting connectivity between them, considering the importance of larval input and recruitment for reef fish populations in the Abrolhos Bank.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 104014"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143171641","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":"Spatial patterns and types of marine anthropogenic debris on touristic beaches along the Eastern Indian Ocean: A preliminary study from Southern Sumatera Island, Indonesia","authors":"Yulianto Suteja ,&nbsp;Ety Parwati ,&nbsp;Syarif Budhiman ,&nbsp;Ivonne M. Radjawane ,&nbsp;Maryani Hartuti ,&nbsp;Pingkan Mayestika Afgatiani ,&nbsp;Azura Ulfa ,&nbsp;Rahmadi ,&nbsp;Esthi Kurnia Dewi ,&nbsp;Anna Ida Sunaryo Purwiyanto","doi":"10.1016/j.rsma.2024.103970","DOIUrl":"10.1016/j.rsma.2024.103970","url":null,"abstract":"<div><div>Padang City is the primary contributor to waste generation in West Sumatera Province, Indonesia. However, information regarding stranded marine anthropogenic debris (AD) existence remains limited. Hence, the primary objective of this study is to assess the stranded AD (abundance, type, and daily accumulation rate/DAR), potential sources, and environmental quality on the emerging tourist beach of Padang. Beaches were selected and sampled by adapting recommendations from NOAA's Marine AD program. We discovered that proximity to rivers, settlement density, sampling time, and artificial obstructions impact beach index, abundance, and DAR of stranded AD. Due to the highest average of stranded AD, Padang beaches are becoming a new debris hot spot in Indonesia. AD is dominated by plastic and originates from local and land-based sources. All beaches are categorized as dirty and covered with hazardous AD. Therefore, tourist comfort and safety must be addressed. To improve these conditions, the local government should conduct awareness campaigns, install trash booms in the river, and collaborate with all stakeholders. More rigorous AD monitoring across different seasons and fields is highly recommended for the appropriate treatment implementation.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103970"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169857","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":"Mechanism of tidal driven vertical suspended sediment transport in Dumai estuary","authors":"Mubarak Mubarak ,&nbsp;Albert Sulaiman ,&nbsp;Arief Darmawan ,&nbsp;Agung Riyadi ,&nbsp;Joko Widodo","doi":"10.1016/j.rsma.2024.103976","DOIUrl":"10.1016/j.rsma.2024.103976","url":null,"abstract":"<div><div>In tide-dominated estuaries, the peak of suspended sediment concentration (SSC) is closely linked to estuarine processes. The response of SSC to current velocity is not instantaneous but exhibits a phase lag, and the SSC amplitude decreases with height above the estuary bottom. This paper demonstrates this phenomenon using an analytical model of vertical sediment dispersion in the Dumai estuary. Initially, we found a low correlation between the observed SSC and the 2D horizontal transport model (MIKE 21 Mud Transport). We then employed a vertical sediment deposition one-dimensional water column model, incorporating settling velocity and tidal effects in the boundary value problem. The analytical solution, derived through the separation of variables and the eigen function expansion, revealed that horizontal SSC dispersion at low tide is longer than at high tide, indicating stronger tidal effects at the estuary entrance, where sediment accumulation is likely. By considering the transport of the simulation results from the vertical SSC to the horizontal SSC at high tide conditions, the correlation increased. These observations suggest increased surface sediment concentration due to re-suspension and strong mixing conditions. Additionally, we found that the phase lag effect indicates that SSC concentrations are depth-dependent, with sediment accumulation following the tidal cycle in deeper waters and occurring after one tidal phase in shallower waters.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103976"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170612","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":"Beyond economics: The multitude of benefits from ecosystem services in the Meghna river basin","authors":"Mst. Armina Sultana ,&nbsp;Atiqur Rahman Sunny ,&nbsp;Md. Ashraf Hussain ,&nbsp;Md Royhanur Islam ,&nbsp;António Raposo ,&nbsp;Sarder Abdulla Al Shiam ,&nbsp;Al Maksud Foysal ,&nbsp;Md. Nahiduzzaman ,&nbsp;Mrityunjoy Kunda ,&nbsp;Md. Ashrafuzzaman ,&nbsp;Heesup Han ,&nbsp;Shamsul Haque Prodhan","doi":"10.1016/j.rsma.2024.103985","DOIUrl":"10.1016/j.rsma.2024.103985","url":null,"abstract":"<div><div>The Meghna River basin (MRB) is a prime example of a complex ecosystem that provides a multitude of services to the local communities and beyond. The purpose of this research is to explore the ecosystem services and the factors that influence changes in the MRB by utilizing the Common International Classification of Ecosystem Services framework. The study involved a combination of primary fieldwork in the MRB and secondary data. Community perceptions were additionally gathered via consultations with local resource users in order to understand their usage of ecosystem services and how they perceived the changes in these services over time. The study identified a total of 30 subcategories of ecosystem services by combining both quantitative and qualitative data. These subcategories included twelve types of provisioning services, eight cultural services, and ten regulating services. The study also found that many of these ecosystem services are at risk, which is due to various drivers of change that have negative impacts on the provision of ecosystem services and pose significant threats on the well-being of the local communities. Overexploitation, illegal fishing, increasing fishing pressure, the lack of alternative job opportunities, land use changes, and the non-compliance of fishing laws are notable among them. The present study highlights the need for a holistic approach towards managing the ecosystem services of the MRB, which is based on these findings. This approach should prioritize the sustainable use of these services in order to ensure that they provide long-term benefits to the local communities. This study recommends implementing policy interventions that support sustainable land use practices, biodiversity conservation, and ecosystem-based natural resource management in order to achieve this. This study additionally emphasizes the importance of engaging local communities in regards to decision-making processes in order to incorporate their needs and perspectives into the management of ecosystem services.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103985"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170617","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":"Nearshore hydrodynamics and sediment transport modeling along the shorefront of a tropical lagoon","authors":"Subhasis Pradhan ,&nbsp;Pratap Kumar Mohanty ,&nbsp;Rabindro Nath Samal ,&nbsp;Madan Mohan Mahanty ,&nbsp;Umakanta Pradhan ,&nbsp;Uma Sankar Panda ,&nbsp;Pravakar Mishra","doi":"10.1016/j.rsma.2024.103993","DOIUrl":"10.1016/j.rsma.2024.103993","url":null,"abstract":"<div><div>An integrated model of hydrodynamic, wave, and sediment transport processes was utilized to analyze nearshore dynamics and sediment transport at Chilika Lagoon on India's east coast. This comprehensive model incorporated various inputs, including observed bathymetric data, sediment characteristics, tidal patterns, current velocities, wave heights, wind speeds, and river discharge with sediment loads. The study found notable variations in diurnal tidal constituents (O1, K1) and minor fluctuations in semi-diurnal constituents (M2, S2). Tidal amplitudes were observed to be higher during ebb conditions compared to inside the lagoon, with this trend reversing during flood conditions. Current velocities within the channel increased during flood conditions, while they were lower in the shallow coastal regions of the inlets during ebb conditions. Conversely, higher current speeds were noted at the inlets during ebb. Monsoon seasons brought higher significant wave heights (Hs &gt; 1 m), compared to the smaller waves observed in summer and winter (Hs &lt; 1 m). Sediment transport was predominantly directed north and northeast due to the prevailing south and southeast wave directions throughout the year. Significant bed level changes were observed at the shorefront during the summer compared to other seasons. These findings are essential for informing the development of an inlet management plan to ensure the ecological health and sustainability of Chilika Lagoon.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103993"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170620","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 review of ship emissions impacts on environmental, health, societal impacts and IMO's mitigation policies","authors":"Atanu Roy,&nbsp;Manashi Chakraborty","doi":"10.1016/j.rsma.2024.103964","DOIUrl":"10.1016/j.rsma.2024.103964","url":null,"abstract":"<div><div>Shipping, an integral part of global commerce, facilitates trade while significantly contributing to air pollution. It is imperative to reduce these emissions because of their severe consequences affecting public health and the climate. To address these concerns, the International Maritime Organization (IMO) has taken a promising step by introducing emission reduction strategies, which initially target a 40 % cut in greenhouse gas (GHG) emissions by 2030 compared to the 2008 emission level. This review critically examines the environmental impacts of ship emissions, focusing particularly on-air quality in coastal regions while also acknowledging the broader economic and societal implications. The study reviewed scholarly articles on ship emission effects on the coastal environment, health, societal impacts, and IMO's GHG reduction policies framework for mitigating these detrimental effects. Findings suggest that implementing IMO's policies to combat ship emissions has improved environmental, health, and societal impacts. However, policies need to be specifically designed to achieve IMO's zero-emission target. This paper will review the potential impacts of ship emissions on coastal air quality and the effectiveness of the IMO's reduction measures.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103964"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143171638","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":"Potentially environmental hazards in handling and storage of hazardous and noxious substances at North Viet Nam seaports","authors":"Tran Anh Tuan ,&nbsp;Ngo Kim Dinh ,&nbsp;Do Thi Thu Huong ,&nbsp;Tran Dinh Lan","doi":"10.1016/j.rsma.2024.104001","DOIUrl":"10.1016/j.rsma.2024.104001","url":null,"abstract":"<div><div>The transport of hazardous and noxious substances (HNS) by sea can cause serious environmental problems, especially at seaports where loading, unloading, and the storage of HNS often take place. Hazards associated with HNS incidents need to be identified, classified, and assessed to support port actors in their environmental management. In the group of the northern seaports of Viet Nam, explosions<strong>,</strong> chemical spills<strong>,</strong> dispersion of hazardous chemicals, and the combination of these hazards are identified and classified. Combining cause-effect analysis, Analytic Hierarchy Process (AHP), and Delphi methods, four causal criteria with 14 indicators and 2 effect criteria with 5 indicators for environmental assessment are developed and proposed for handling and storing HNS at seaports. Applying these criteria to evaluate HNS environmental hazards at 30 seaports in northern Viet Nam shows that, six out of 30 seaports are at high risk, 24 out of 30 seaports are at medium risk, and no ports are at low risk. It has also been revealed that the main issue related to environmental hazards in HNS handling and storage activities involves environmental management practices at seaports. To address these issues, seaports need to establish regulations for HNS management, provide guidelines for risk assessment during handling and storage, and develop preventive and incident response plans.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 104001"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143171682","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":"Inorganic elements in blood, eggs, and embryos of olive ridley sea turtle (Lepidochelys olivacea) from Sanquianga Natural National Park, Colombia","authors":"Laura Nathalia Hurtado-Sierra ,&nbsp;Alan Giraldo ,&nbsp;Pilar Gómez-Ramírez ,&nbsp;Emma Martínez-López ,&nbsp;Juan José Gallego-Zerrato ,&nbsp;Adriana Azucena Cortés-Gómez","doi":"10.1016/j.rsma.2024.103980","DOIUrl":"10.1016/j.rsma.2024.103980","url":null,"abstract":"<div><div>The concentration of eight inorganic elements (As, Cd, Cr, Cu, Hg, Pb, Se and Zn) was analysed for the first time in the blood (adults), eggs, embryos, embryo carapaces, and sand from nests of olive ridley turtles (<em>Lepidochelys olivacea</em>) of the Sanquianga National Natural Park (Colombian Pacific coast). Zinc was the element that showed the highest concentration, followed by Cr and Se. Sand and embryo carapaces were the samples that showed the highest concentrations. Significant correlations were identified between the elements, being most of them reported by first time in this species. Molar ratio Se:Hg was greater than 1 in all the samples, indicating that there is sufficient Se to bind to Hg, and therefore, counteracting its potential toxicity to health. Likewise, five correlations were associated with the carapace of the embryos and none with sand, suggesting maternal transfer contamination. The results obtained provide novel information about exposure to inorganic elements in nesting sea turtles in the eastern tropical Pacific.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"81 ","pages":"Article 103980"},"PeriodicalIF":2.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143170622","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}