Regional Studies in Marine Science最新文献_第8页

Antimicrobial potential of marine sponges and sponge-derived actinomycetes from Mun Nork and Mun Nai Islands, Thailand 泰国门诺克和门奈群岛海洋海绵和海绵衍生放线菌的抗菌潜力

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-06 DOI: 10.1016/j.rsma.2026.104754

Trinset Weeraphan , Chollabuppha Chou , Prapasiri Bunyong , Naphatson Chanthathamrongsiri , Thanchanok Sirirak , Sumaitt Putchakarn , Swee-Cheng Lim , Wongsakorn Phongsopitanun

Antimicrobial resistance is a critical and global public health challenge, contributing to treatment failure, prolonged hospitalizations, and increased healthcare costs. Consequently, the discovery and development of new antibiotics is urgently needed. Recent studies have highlighted marine sponges as prolific sources of bioactive compounds and important reservoirs of actinomycetes, a rich source of antibiotics. In this study, 50 sponge samples were collected from Mun Nork and Mun Nai Islands in Rayong Province, Thailand, and evaluated for their antimicrobial activity and potential to harbor sponge-associated actinomycetes. Of the samples tested, 30 sponge extracts exhibited antimicrobial activity, predominantly against Gram-positive bacteria. Notably, Neopetrosia sp. (blue) demonstrated the broadest spectrum of activity, inhibiting Gram-positive and Gram-negative bacteria as well as yeast. A total of 41 actinomycete isolates were obtained from 15 sponge samples and subsequently classified into 12 genera: Micromonospora (3 isolates), Nocardia (13), Rothia (1), Isoptericola (1), Salinispora (12), Actinomycetospora (1), Pseudonocardia (1), Streptomyces (5), Mycobacterium (1), Prauserella (1), and Rhodococcus (2). Among these, three strains — Streptomyces (Strept.) althioticus RS027–1, Strept. nanshensis TR01–1, and Salinispora arenicola RS029–1 — exhibited antimicrobial activity against Kocuria rhizophila and Streptococcus pyogenes. Additionally, Salinispora arenicola RS029–1 showed broader activity, inhibiting Bacillus subtilis and Staphylococcus aureus. Based on 16S rRNA gene sequence analysis, three isolates were identified as potential novel species. The findings demonstrate that marine sponges are valuable sources of antimicrobial compounds and serve as important habitats for bioactive actinomycetes. Furthermore, marine sponges hold considerable promise for the discovery of novel actinomycete species with potential applications in future drug discovery and development.

抗菌素耐药性是一项重大的全球公共卫生挑战，导致治疗失败、住院时间延长和医疗费用增加。因此，迫切需要发现和开发新的抗生素。最近的研究强调，海洋海绵是生物活性化合物的丰富来源和放线菌的重要储存库，放线菌是抗生素的丰富来源。在这项研究中，从泰国罗勇省的门诺克岛和门奈岛收集了50个海绵样本，并评估了它们的抗菌活性和海绵相关放线菌的潜力。在测试的样品中，30种海绵提取物显示出抗菌活性，主要是针对革兰氏阳性细菌。值得注意的是，Neopetrosia sp.（蓝色）表现出最广泛的活性谱，可以抑制革兰氏阳性和革兰氏阴性细菌以及酵母。从15份海绵样品中共分离到41株放线菌，并将其分为12属：小单孢菌（3株）、诺卡菌（13株）、罗氏菌（1株）、异菌属（1株）、盐孢菌属（12株）、放线菌孢子菌属（1株）、假心菌属（1株）、链霉菌属（5株）、分枝杆菌属（1株）、Prauserella（1株）、红球菌属（2株）。其中，althioticus Streptomyces (Strept.) RS027-1、Strept.；nanshensis TR01-1和Salinispora arenicola RS029-1 -对嗜根葡萄球菌和化脓性链球菌具有抑菌活性。此外，沙nicola Salinispora RS029-1表现出更广泛的活性，可抑制枯草芽孢杆菌和金黄色葡萄球菌。通过16S rRNA基因序列分析，鉴定出3株菌株为潜在新种。这些发现表明，海洋海绵是抗菌化合物的宝贵来源，也是生物活性放线菌的重要栖息地。此外，海洋海绵对发现新的放线菌种类具有很大的希望，在未来的药物发现和开发中具有潜在的应用前景。

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引用次数: 0

Microplastics pollution in aquaculture areas and the synergistic effects with antibiotics and heavy metals: A case study in Zhoushan, China 水产养殖区微塑料污染及其与抗生素和重金属的协同效应——以舟山为例

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2025-06-06 DOI: 10.1016/j.rsma.2025.104281

Yiyang Duan , Hongying Gao , Yaqian Liu , Hao Chang , Jianbo Yan , Yuchao Wang , Zhichao Zhang , Chengji Chen , Xueyan Li , Heng Wang , Heqing Shen

The Zhoushan Archipelago is the largest base for seafood production, processing, and sales in China. The aim of this study is to systematically evaluate the characteristics of microplastics (MPs) pollution in the marine aquaculture areas, as well as the synergistic effects with the contamination of heavy metals and antibiotics. The microplastic pollution in the aquaculture sea area was analyzed using Pyrolysis gas chromatography time-of-flight mass spectrometry (Py-GC/QTOF) and Raman spectroscopy. Additionally, heavy metals and antibiotics were detected through Inductively coupled plasma mass spectrometry (ICP-MS) and Liquid chromatography-mass spectrometry (LC-MS) techniques. The primary MPs’ types in the aquaculture marine areas include Polyvinyl chloride (PVC), Polystyrene (PS), Polypropylene (PP), and Polyethylene (PE). There are variations in the types and concentrations of MPs found in the water and sediments of the different marine aquaculture sites. The variations are strongly correlated with the presence of heavy metals Nickel (Ni), Lead (Pb), Cadmium and quinolone antibiotics. MPs’ interactions to heavy metals and antibiotics, such as quinolone in sediments may synergistically increase MPs in farmed mussels, may enhance the indirect exposure to and ingestion of MPs with their co-pollutants through seafood consumption in human being. Therefore, their regular monitoring is required to alleviate marine environment pollution and to hold sea food production safety.

舟山群岛是中国最大的海产品生产、加工和销售基地。本研究旨在系统评价海洋水产养殖区微塑料污染特征及其与重金属、抗生素污染的协同效应。采用热解气相色谱-飞行时间质谱法（Py-GC/QTOF）和拉曼光谱法对水产养殖海域的微塑料污染进行了分析。此外，通过电感耦合等离子体质谱（ICP-MS）和液相色谱-质谱（LC-MS）技术检测重金属和抗生素。水产养殖区主要的MPs类型有聚氯乙烯（PVC）、聚苯乙烯（PS）、聚丙烯（PP）和聚乙烯（PE）。在不同海洋水产养殖场的水和沉积物中发现的MPs的类型和浓度存在差异。这些变化与重金属镍（Ni）、铅（Pb）、镉和喹诺酮类抗生素的存在密切相关。MPs与重金属和抗生素（如沉积物中的喹诺酮）的相互作用可能协同增加养殖贻贝中的MPs，可能通过食用海产品增加人类对MPs及其共污染物的间接暴露和摄入。因此，需要对其进行定期监测，以减轻海洋环境污染，维护海产品生产安全。

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引用次数: 0

Overcoming data constraints: Using macrobenthic functional feeding guilds for ecological assessment of an anthropogenically impacted estuary 克服数据限制：利用大型底栖动物功能性喂养协会进行人为影响河口的生态评估

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-20 DOI: 10.1016/j.rsma.2026.104778

Vinitha B , Soniya Sukumaran , Shraddha Pillai

Progressive anthropogenic alteration of estuaries has caused extensive habitat degradation, leading to partial or complete loss of benthic communities. Evaluating the ecological health of such impacted systems is vital for effective environmental management and conservation. However, in estuaries cumulatively impacted by both natural variability and human pressures, low macrobenthic abundances and azoic conditions often fail to meet the data thresholds required for conventional taxonomic indices, limiting their reliability. To address these constraints, this study applied a Functional Feeding Guild (FFG) approach alongside the Evenness Feeding Diversity Index (j_FD), to evaluate the ecological status of the heavily polluted Patalganga estuary over four years. Subsurface deposit feeders (SSDF), primarily pollution-tolerant oligochaetes, prevailed in highly degraded zones. Both natural (salinity) and anthropogenic (PHc_sed) stressors emerged as key drivers of community and feeding guild distribution. The j_FD effectively identified poor ecological quality in the upper estuary and moderate conditions in the lower zones, demonstrating the utility of functional indices in assessing systems subject to strong anthropogenic stress. The results underscore the value of integrating functional and structural indicators with multivariate analyses for accurate ecological assessments, especially in data-limited environments, and emphasize the importance of further research on functional traits to refine ecological quality evaluations and management strategies.

河口的逐渐人为改变造成了广泛的生境退化，导致底栖生物群落部分或完全丧失。评估这些受影响系统的生态健康对于有效的环境管理和保护至关重要。然而，在受自然变异性和人类压力的累积影响的河口，低底栖生物丰度和无氮条件往往不能满足传统分类指数所需的数据阈值，限制了它们的可靠性。为了解决这些制约因素，本研究采用功能摄食协会（FFG）方法和均匀摄食多样性指数（jFD）来评估严重污染的帕塔尔甘加河口四年来的生态状况。地下沉积物食料（SSDF），主要是耐污染的寡毛纲，在高度退化区盛行。自然（盐度）和人为（PHcsed）压力源都是群落和摄食种群分布的关键驱动因素。jFD有效地识别了河口上游生态质量较差、河口下游生态质量中等的生态环境，证明了功能指标在评价受强烈人为压力影响的生态系统中的实用性。结果强调了将功能和结构指标与多变量分析相结合对准确的生态评价的价值，特别是在数据有限的环境中，并强调了进一步研究功能性状对完善生态质量评价和管理策略的重要性。

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引用次数: 0

Microalgae-derived biochar for microplastic removal from aquatic systems: A comprehensive review and future perspectives 从水生系统去除微塑料的微藻衍生生物炭：综合综述和未来展望

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-10 DOI: 10.1016/j.rsma.2026.104767

Ashrita Mohanty , Madhusmita Behera , Aditya Kishore Dash , Akshaya Kumar Verma

Microplastics (MPs) have emerged as a prevailing contaminant in aquatic environments, posing ecological risks and potential threats to human health due to their persistence and toxicity. Conventional remediation approaches are often constrained by high costs, limited efficiency and risk of secondary pollution. Recently, microalgae-derived (MD) biochar has gained attention as a sustainable and effective adsorbent for MP removal, with studies reporting removal efficiencies ranging from 60 % to 99 %, depending on MP type, size, surface chemistry, and operational conditions. Its high surface reactivity, cost-effectiveness and environmental compatibility make MD-biochar a promising alternative to conventional adsorbents. This review evaluates the potential of MD biochar in MP remediation, emphasizing how physicochemical properties such as porosity, functional groups and surface charge govern adsorption performance. Various microalgal species, such as Chlorella and Spirulina, have been explored as biochar precursors, offering unique structural and chemical properties that enhance MP removal. Production conditions, particularly pyrolysis temperature (450–750℃) and activation strategies, strongly influence biochar functionality. The mechanisms of MP adsorption, involving electrostatic attraction, hydrophobic partitioning and π-π interactions, are thoroughly discussed. Additionally, the review emphasizes the benefits of utilizing MD-biochar compared to conventional adsorbents, its ability to be regenerated and its ecological sustainability. Issues such as scalability, variations in MP composition are also discussed. Further studies should concentrate on defining common parameters, run pilot trials in diverse water matrices, integrating emerging tools such as AI-ML, carry out cost-benefit studies and stakeholder engagement.

微塑料已成为水生环境中的主要污染物，由于其持久性和毒性，对生态风险和人类健康构成潜在威胁。传统的修复方法往往受到成本高、效率有限和二次污染风险的制约。最近，微藻衍生（MD）生物炭作为一种可持续和有效的MP去除吸附剂引起了人们的关注，研究报告的去除效率从60% %到99% %不等，具体取决于MP类型、大小、表面化学和操作条件。其高表面反应性、成本效益和环境相容性使md -生物炭成为传统吸附剂的一个有前途的替代品。本文综述了MD生物炭在MP修复中的潜力，强调了孔隙度、官能团和表面电荷等物理化学性质对吸附性能的影响。各种微藻，如小球藻和螺旋藻，已被探索作为生物炭前体，具有独特的结构和化学性质，提高了MP的去除。生产条件，特别是热解温度（450-750℃）和活化策略，对生物炭的功能有很大影响。讨论了MP吸附的静电吸引、疏水分配和π-π相互作用等机理。此外，本文还强调了与传统吸附剂相比，利用md -生物炭的优势，其再生能力和生态可持续性。问题，如可扩展性，变化的MP组成也进行了讨论。进一步的研究应集中于确定共同参数，在不同的水基质中进行试点试验，整合新兴工具，如AI-ML，进行成本效益研究和利益相关者参与。

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引用次数: 0

Brazil’s role in the illegal sea cucumber trade: A synthesis of historical accounts, literature, reports, and seizure records 巴西在非法海参贸易中的作用：历史记载、文献、报告和缉获记录的综合

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-26 DOI: 10.1016/j.rsma.2026.104802

Luciana Ribeiro Martins , Yara Aparecida Garcia Tavares , Yara Nantes Vasconcelos , Francisco José Reyes Sánchez , Pablo Damian Borges Guilherme , Guilherme Rupp , Camilla Souto

The global exploitation of sea cucumbers spans roughly 90 countries and involves 84 species. Here, we provide a historical overview and current assessment of Brazil’s illegal sea cucumber trade by integrating lexicometric analysis with media reports, unpublished field observations, and specimens seized by the national compliance authorities. We also review literature with population-level data for two key species—Holothuria (Halodeima) grisea and Isostichopus badionotus—and evaluate the role of Brazilian legislation and taxonomic resolution in their conservation. Sea cucumber fisheries in Brazil were first documented in the early 20th century, with the first illegal apprehension recorded in the early 2000s. Holothuria (Halodeima) grisea and I. badionotus have been harvested without regulation throughout the coast. While the biology of H. (Halodeima) grisea is relatively well known in southern Brazil, local knowledge of this species in northern Brazil, as well as that of I. badionotus, is scarce, hindering effective management. Both local and foreign harvesters process specimens on-site before export, primarily to Hong Kong, with some shipments to Europe. Nearly 40 % of confiscated individuals were juveniles, indicating both reduced market value and intense harvesting pressure. Although the full extent of exploitation remains unclear, overharvesting has already driven stock declines in Ceará State. The combination of limited research capacity and regulatory gaps makes both the conservation and sustainable use of Brazilian sea cucumbers especially challenging, underscoring the urgent need for baseline biological data and the development of effective management strategies.

全球大约有90个国家捕捞海参，涉及84种海参。在这里，我们将词汇计量学分析与媒体报道、未发表的实地观察和国家合规当局缴获的标本相结合，提供巴西非法海参贸易的历史概述和当前评估。我们还回顾了两个关键物种- holothuria (Halodeima) grisea和Isostichopus badionotus -的种群水平数据，并评估了巴西立法和分类学决议在其保护中的作用。巴西的海参渔业最早记录于20世纪初，第一次非法捕捞记录是在21世纪初。Holothuria (Halodeima) grisea和I. badionotus在整个海岸都没有受到监管。虽然巴西南部对稻瘟病人（Halodeima）的生物学了解相对较多，但巴西北部对稻瘟病人（I. badionotus）的当地知识却很少，这阻碍了有效的管理。本地和国外的采集者在出口前都会对标本进行现场处理，主要出口到香港，部分出口到欧洲。近40% %的被没收的个体是幼鱼，这表明市场价值下降和收获压力大。尽管目前尚不清楚捕捞的全面程度，但过度捕捞已经导致该州的鱼类数量下降。有限的研究能力和管理空白使巴西海参的保护和可持续利用特别具有挑战性，突出表明迫切需要基线生物数据和制定有效的管理战略。

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引用次数: 0

Incorporating knowledge graph and deep learning method for the classification of ship offense activities 结合知识图谱和深度学习方法对船舶违章行为进行分类

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-17 DOI: 10.1016/j.rsma.2026.104785

Hongchu Yu , Yanxin Han , Lei Xu , Tianming Wei , Xuequan Zhang

Ship offences not only endanger marine resources and ecosystems but also pose severe challenges to joint enforcement among multiple agencies. Recognition and classification of ship offenses are essential for enforcement agencies to respond rapidly. Due to irregular descriptions of ship offense events, conventional methods such as Support Vector Machine (SVM), graph convolutional network (GCN), and random forest (RF) fail to capture complex characteristics. To address this gap, a knowledge-graph–driven and feature-enhanced graph convolutional network (Enhanced KG+GCN) is proposed for the precise classification of ship offenses. It consolidated semantically proximate but differently worded KG entities into unified representations and aligned them with TF-IDF-extracted core domain features, resulting in standardized, non-redundant features better suited to subsequent classification. The judgment documents and official announcements obtained from the Supreme People’s Court and the China Maritime Safety Administration were first standardized and used to construct knowledge graphs for ship offense events. Domain knowledge and relevant regulations were then employed to extract discriminative entities and attributes, which were organized via a hierarchical fusion strategy. The semantic representations of the ship offenses were enriched through the fused entities and attributes. Finally, a semi-supervised GCN was applied to categorize ship offenses, leveraging the feature-enhanced knowledge graph. Experiments demonstrate high precision performance with F1 scores of 0.95 and a mean average precision of 0.97 across five offense categories (illegal fishing, sand mining, dumping, pollution discharge, smuggling), outperforming traditional methods.

船舶违法行为不仅危害海洋资源和生态系统，而且对多部门联合执法构成严峻挑战。船舶违法行为的识别和分类对于执法机构迅速作出反应至关重要。由于船舶攻击事件描述的不规则性，传统的支持向量机（SVM）、图卷积网络（GCN）和随机森林（RF）等方法无法捕获复杂的特征。为了解决这一问题，提出了一种知识图驱动和特征增强的图卷积网络（Enhanced KG+GCN），用于船舶违章行为的精确分类。它将语义近似但措辞不同的KG实体整合为统一的表示，并将它们与tf - idf提取的核心领域特征对齐，从而产生标准化的、非冗余的特征，更适合后续分类。从最高人民法院和中国海事局获得的判决书和官方公告首次被标准化并用于构建船舶违法事件的知识图谱。然后利用领域知识和相关规则提取具有判别性的实体和属性，并通过层次融合策略进行组织。通过实体和属性的融合，丰富了船舶违法行为的语义表征。最后，利用特征增强的知识图，应用半监督GCN对船舶违例进行分类。实验结果表明，在非法捕捞、非法采砂、非法倾倒、非法排污、非法走私等5个犯罪类别中，该方法的F1得分为0.95，平均精度为0.97，优于传统方法。

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引用次数: 0

Comparative population parameters and stock assessment of three symmetric Scylla species in coastal waters of the Gulf of Thailand 泰国湾沿岸三种对称Scylla的比较种群参数和种群数量评估

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-09 DOI: 10.1016/j.rsma.2026.104756

Md. Rashedal Islam , Sukree Hajisamae , Siriporn Pradit , Muhammad Abdur Rouf , Sofiyudin Maae , Husneya Rensep

This study was conducted to determine the population structure, growth pattern, growth parameters, mortality, exploitation level, recruitment patterns, yield per-recruit (Y’/R), optimum catchable length (CW_opt), and progression cohort of three sympatric mud crab species (Scylla olivacea, S. paramamosain, and S. tranquebarica) from the coastal areas of the Gulf of Thailand. Monthly sampling was conducted from May 2022 to June 2023 using traditional traps. Carapace width (CW) and body weight (BW) were digitally measured and analyzed with FiSAT-II software. CW_opt was estimated using an empirical model based on maximum carapace length. The CW–BW relationship revealed significant deviations from isometry, showing positive allometric growth (b > 3, p < 0.001) for all three species. The estimated asymptotic parameters (CW_∞, W_∞, K) were 144.38 mm, 645.66 g, and 0.44 year⁻¹ for S. olivacea; 160^.13 mm, 1007.32 g, and 0.43 year⁻¹ for S. paramamosain; and 160.13 mm, 914.99 g, and 0.15 year⁻¹ for S. tranquebarica. The estimated natural mortality (M), fishing mortality (F), and exploitation (E) indicate overexploitation of S. olivacea (M = 0.69 year⁻¹, F = 0.86 year⁻¹, E = 0.56), whereas S. paramamosain (0.66, 0.37, 0.36) and S. tranquebarica (0.33, 0.11, 0.25) were underexploited. The peak recruitment occurred from December to February in S. olivacea, while S. paramamosain and S. tranquebarica exhibited similar peaks between October to December. These findings are crucial for developing science-based management strategies and conservation policies that ensure the sustainable use of these ecologically and economically valuable resources in the coastal ecosystems of the Gulf of Thailand.

研究了泰国湾沿岸3种同域泥蟹（Scylla olivacea、S. paramamosain和S. tranquebarica）的种群结构、生长模式、生长参数、死亡率、捕捞水平、捕蟹模式、每捕蟹产量（Y′/R）、最佳可捕长度（CWopt）和进展队列。2022年5月至2023年6月，采用传统诱捕器每月抽样。采用FiSAT-II软件对甲壳宽度（CW）和体重（BW）进行数字化测量和分析。使用基于最大甲壳长度的经验模型估计CWopt。CW-BW关系显示出与等距的显著偏差，所有三个物种均表现出正异速生长（b > 3, p <； 0.001）。估计的渐近参数（CW∞,W∞，K）分别为144.38 mm， 645.66 g和0.44 year−1；S. paramamosain为160.13 mm, 1007.32 g, 0.43 year−1；为160.13 mm, 914.99 g, 0.15 year−1。估计的自然死亡率(M)、捕捞死亡率(F)和开发利用(E)表明橄榄石棘鱼被过度开发（M = 0.69 year - 1, F = 0.86 year - 1, E = 0.56），而paramamosain棘鱼（0.66,0.37,0.36）和tranquebarica棘鱼（0.33,0.11,0.25）被过度开发。橄榄山棘虫的招募高峰出现在12 - 2月，而paramamosain和tranquebarica的招募高峰出现在10 - 12月。这些发现对于制定基于科学的管理战略和保护政策至关重要，这些战略和保护政策可确保泰国湾沿海生态系统中这些具有生态和经济价值的资源的可持续利用。

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引用次数: 0

A framework for assessing the pollution risk analysis of oil spill incidents on inland lakes: Oil spill models and case studies of Lake Chaohu, China 内陆湖溢油污染风险评估框架——巢湖溢油模型与案例研究

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-12 DOI: 10.1016/j.rsma.2026.104775

Zefu Liu , Aiping Huang , Bing Ma , Fei Dong , Xiaobo Liu

As an essential function of the Yinjiang-Jihuai Project, shipping in the Lake Chaohu area faces potential risks of oil spills. In response to the increasing threat of oil spill impacts on the lake, a comprehensive framework for assessing oil spill risks in inland lakes has been proposed. This framework integrates lake fluid dynamics (oil spill modeling), the Environmental Sensitivity Index (ESI). The framework was applied to Chaohu Lake in China, where oil slick migration paths were simulated at multiple oil spill accident points along the Chao shipping segment. A lake oil spill comprehensive risk index method was proposed to assess the severity of oil spill incidents and quantify the impact of single wind directions on oil slick migration. The results indicate that both wind direction and the flow field jointly influence the migration of the oil slick, with wind direction playing the dominant role. The location of the oil spill also affects the accumulation of the oil slick. At the Pai River Estuary, oil spills have the greatest impact on the ecological shoreline of Lake Chaohu, and spills during navigation affect the largest area of water. At the Baishi-Tianhe River Estuary, oil spills under various wind directions may cause pollution to the water intake in the southwest region of Lake Chaohu. Within 24 h, the oil spill comprehensive risk index is highest at the Pai River Estuary; within 72 h, the highest index is observed at the Baishi-Tianhe River Estuary. It is recommended that targeted response measures be implemented for high risk areas based on the oil slick drift characteristics at different spill locations, during different periods, and under the worst case wind conditions.

作为银吉淮工程的重要功能，巢湖地区的航运面临着潜在的溢油风险。针对内陆湖溢油风险日益增加的威胁，提出了内陆湖溢油风险综合评估框架。该框架整合了湖泊流体动力学（溢油建模）、环境敏感性指数（ESI）。将该框架应用于中国巢湖，在巢湖航段多个溢油事故点模拟浮油运移路径。提出湖泊溢油综合风险指数法，评估溢油事件的严重程度，量化单一风向对浮油迁移的影响。结果表明：风向和流场共同影响浮油的迁移，风向起主导作用；溢油的位置也会影响浮油的积累。排河口溢油对巢湖生态岸线的影响最大，航行溢油影响水域面积最大。在白石-天河河口，不同风向下的溢油会对巢湖西南部取水口造成污染。24 h内，排河口溢油综合风险指数最高；72 h内，白石-天河口的指数最高。建议根据不同溢油地点、不同时段和最坏风力条件下的浮油漂移特征，对高风险区域实施针对性的应对措施。

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引用次数: 0

Participatory scenarios and spatial modelling to explore mangrove ecosystem services futures in Lamu, Kenya 探讨肯尼亚拉穆红树林生态系统服务未来的参与式情景和空间模型

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-09 DOI: 10.1016/j.rsma.2026.104764

Cecilia Oyuga Olima , Chima Jude Iheaturu , Robert Marchant , Jessica P.R. Thorn , Claudia Capitani , Markus Fischer , Margaret Awuor Owuor

Land use and land cover change (LULCC) disrupts ecosystem structure and function, threatening ecosystem services and human well-being. Anticipating future trajectories is especially urgent in coastal regions, where mangrove ecosystems face anthropogenic and climatic pressures. In Lamu County, ongoing large-scale developments are expected to attract new settlements along the coastline and increase competition over land and natural resources, further intensifying pressures on mangroves. Here, we combine participatory scenario development with spatial modelling and ecosystem service valuation to explore plausible futures in Lamu County, Kenya. Using the Kesho, a diverse group of stakeholders co-produced four development scenarios to 2063, which were translated into spatially explicit LULCC maps using Landsat derived datasets and stakeholder-informed driver assumptions. A benefit transfer method was applied in two ways to estimate the value of mangroves’ provisioning, regulating and cultural services. Based on land-cover change alone, all scenarios show slight declines in value of ecosystem services. However, when scenario-specific changes in unit values were incorporated, the annual value diverged sharply, rising to USD 10.5 billion under the New Dawn scenario and falling to USD 7.6 billion under the Growth Trap. This study presents the first participatory scenario assessment in Lamu County, providing policy-relevant insights into how development pathways may shape mangrove ecosystems and the services they provide. Beyond Lamu, Kesho offers an adaptable tool for application in other mangrove-rich regions globally, supporting efforts to align local decision-making with continental and global sustainability agendas, including the African Union’s Agenda 2063 and the Sustainable Development Goals.

土地利用和土地覆盖变化（LULCC）破坏生态系统结构和功能，威胁生态系统服务和人类福祉。在红树林生态系统面临人为和气候压力的沿海地区，预测未来的发展轨迹尤为紧迫。在拉木县，正在进行的大规模开发预计将吸引沿海地区的新定居点，并加剧对土地和自然资源的竞争，进一步加剧对红树林的压力。在这里，我们将参与式情景开发与空间建模和生态系统服务评估相结合，探索肯尼亚拉穆县可行的未来。使用Kesho，不同的利益相关者群体共同制作了到2063年的四种发展情景，并使用Landsat衍生的数据集和利益相关者知情的驱动因素假设将其转化为空间明确的LULCC地图。采用效益转移法，从两个方面对红树林的供给、调节和文化服务价值进行了估算。仅以土地覆盖变化为基础，所有情景均显示生态系统服务价值略有下降。然而，当考虑到单位价值的具体情景变化时，年度价值出现了急剧分化，在“新黎明”情景下上升到105亿美元，而在“增长陷阱”情景下下降到76亿美元。本研究首次在拉木县进行了参与性情景评估，为发展路径如何影响红树林生态系统及其提供的服务提供了与政策相关的见解。除了拉穆之外，Kesho还提供了一种适应性强的工具，可用于全球其他红树林丰富的地区，支持地方决策与非洲大陆和全球可持续发展议程保持一致，包括非洲联盟的《2063年议程》和可持续发展目标。

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引用次数: 0

First report on the distribution of Acantharia (Radiolaria) in Korean coastal waters: Comparison with their distribution in the northwestern Pacific 韩国近海棘虫属（放射菌属）分布的首次报道：与西北太平洋分布的比较

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-02-01 Epub Date: 2026-01-22 DOI: 10.1016/j.rsma.2026.104794

Young-Ok Kim , Jungmin Choi , Noritoshi Suzuki , Intae Kim , Jimin Lee

Acantharia, a major group of microzooplankton inhabiting warm open-ocean waters, have not previously been studied in Korean coastal regions, despite these areas being frequently influenced by warm-water intrusions from the East China Sea and the Kuroshio Current. This study investigated the distribution of Acantharia in southern Korean coastal waters through a summer field survey and compared their local distribution with that observed at an open-ocean site in the Kuroshio region. At the coastal site, the highest acantharian abundance (33 cells L⁻¹) observed in surface waters. Large acantharian cells, with endoplasm diameter exceeding 50 μm, were concentrated in the upper water layer, coinciding with abrupt increases in temperature and decreases in salinity. In contrast, smaller acantharian cells with endoplasm diameters below 20 μm were sparsely distributed throughout the water column at the open-ocean site. At both sites, peaks in acantharian abundance did not coincide vertically with layers of high chlorophyll concentration. Satellite-derived chlorophyll maps indicate that the dense occurrence of acantharian cells in the Korean coastal waters may be associated with an immigration-driven hotspot along the eastern boundary of the Changjiang diluted water plume. Further studies across the waters surrounding the Korea Peninsula are required to better understand the distribution patterns and ecological roles of Acantharia in this region.

刺虫是一种主要的生活在温暖的开放海域的微型浮游动物，尽管这些地区经常受到来自东中国海和黑潮的温水入侵的影响，但以前没有在韩国沿海地区进行过研究。本研究通过夏季野外调查调查了刺虫在韩国南部沿海水域的分布，并将其局部分布与在黑潮地区一个开阔海域观察到的分布进行了比较。在沿海地区，地表水的棘虫丰度最高（33个细胞L−1）。内质直径超过50 μm的棘层细胞主要集中在上层水层，温度急剧升高，盐度急剧下降。相比之下，在开放海域，内质直径小于20 μm的棘虫细胞在整个水柱中稀疏分布。在这两个地点，棘虫丰度的高峰在垂直方向上与高叶绿素浓度层不重合。卫星衍生的叶绿素图谱显示，朝鲜沿海海域棘细胞的密集分布可能与沿长江稀释水羽东部边界的移民驱动热点有关。为了更好地了解棘虫在该地区的分布格局和生态作用，需要进一步研究朝鲜半岛周围水域。

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引用次数: 0