Regional Studies in Marine Science最新文献_第3页

Overlaps of marine predators, aquaculture, and fish-aggregating devices: Passive acoustics reveal site- and time-specific dolphin behavior 海洋捕食者、水产养殖和鱼群聚集装置的重叠：被动声学揭示了地点和时间特定的海豚行为

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-22 DOI: 10.1016/j.rsma.2026.104793

Patrizia Patti , Elena Papale , Giulia Pedrazzi , Viola Cossio , Michela Aquilina , Matthew Laspina Parisi , Jean Paul Schembri , Sofia Rinalduzzi , Daniela Silvia Pace

Aquaculture facilities and fishing procedures using floating Fish Aggregating Devices (FADs) have recently gained increasing attention due to the intensifying practice and ecosystem concerns. However, uncertainty remains regarding the conservation issues for vulnerable megafauna attracted to them. Here, we investigated the acoustic occurrence and behavior of bottlenose dolphins in the proximity of these fishing facilities in the Central Mediterranean Sea. Data were collected between February and October 2024 through autonomous recorders deployed in two fish farms and one FAD along the Maltese island’s eastern coast. Almost 300 h of recordings were analyzed to detect dolphin vocalizations. Results showed that bottlenose dolphins occurred at all sites, with temporal (both seasonal and diel) and site–specific variability, and a higher presence in the FAD proximity compared to the fish farms. Furthermore, the different acoustic behavior displayed close to the FAD compared to the fish farms suggests that the feeding strategy adopted requires higher coordination. The outcomes highlight that fish artificial floating devices, both aquaculture cages and FADs, can represent an increased opportunity for food availability but might have a differential impact on bottlenose dolphin behavior in Maltese archipelago, that should be evaluated to determine the extent of this effect on the conservation of the species for implementing appropriate sustainable management plans of the fish industry that take into account marine mammal presence.

由于实践和生态系统问题的加剧，使用浮鱼聚集装置（FADs）的水产养殖设施和捕捞程序最近受到越来越多的关注。然而，对于吸引它们的脆弱巨型动物的保护问题，仍然存在不确定性。在这里，我们调查了地中海中部这些捕鱼设施附近宽吻海豚的声学发生和行为。数据是在2024年2月至10月期间通过部署在马耳他岛东海岸的两个养鱼场和一个FAD的自动记录仪收集的。研究人员分析了近300张 h的录音，以检测海豚的发声。结果表明，宽吻海豚出现在所有地点，具有时间（季节和日）和地点特异性变异，与养鱼场相比，在FAD附近的存在率更高。此外，与养鱼场相比，在FAD附近表现出的不同声学行为表明，所采用的摄食策略需要更高的协调性。研究结果强调，鱼类人工漂浮装置，包括水产养殖网箱和FADs，可以增加食物供应的机会，但可能对马耳他群岛的宽吻海豚的行为产生不同的影响，应该进行评估，以确定这种影响对物种保护的程度，以便在考虑到海洋哺乳动物存在的情况下实施适当的渔业可持续管理计划。

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引用次数: 0

How the interannual and seasonal variability in connectivity to ITF and its relation to ENSO events in the Halmahera Sea: A modeling approach and observation Halmahera海与ITF连通性的年际和季节变率及其与ENSO事件的关系：建模方法和观测

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-21 DOI: 10.1016/j.rsma.2026.104792

Muhammad Zainuddin Lubis , Song Hu , Andrean V.H. Simanjuntak , Angga Dwinovantyo , Ekoué Ewane Blaise Arnold , Husnul Kausarian , Punyawi Jamjareegulgarn , Made Wedanta Suryadarma

Understanding circulation dynamics in the Halmahera Sea (HS) is essential for clarifying the interactions between El Niño and La Niña events and ITF variability, which significantly impacts the global climate. Despite studies on air-sea interactions in the HS, gaps remain regarding interannual and seasonal variability, leading to uncertainties in understanding ocean circulation and throughflow dynamics. Specifically, there is a lack of understanding of how seasonal temperature and salinity shifts influence the strength and direction of ocean currents in the HS region. This study investigated how temperature and salinity variations during interannual and different seasons affect ocean current patterns in the HS. We used the CROCO model from 2019 to 2023 and observed it in September 2021. Our findings indicate distinct interannual patterns in SST, with the northwest monsoon SST ranging from approximately 28.3–29.8°C and the southeast monsoon SST ranging from approximately 26.8–29.0°C. The SSS varied between approximately 34.1 and 34.6 PSU, with the maximum mean water mass transport in the subsurface recorded at −0.5479 ± 0.6583 Sv at 0.5°S, indicating transport toward the Banda Sea. The SSH ranged from ∼0.69 to ∼0.73 m in the northwest and ∼0.66 to ∼0.69 m in the southeast monsoon. The densities at the surface, subsurface, and intermediate layers were 22.5, 25.5, and 26.5

σ_{ѳ}

. This research advances our understanding of the factors affecting HS circulation dynamics and their responses to El Niño and La Niña events, paving the way for Indo-Pacific water exchange studies.

了解Halmahera海（HS）环流动力学对于阐明El Niño和La Niña事件与ITF变率之间的相互作用至关重要，ITF变率对全球气候有重要影响。尽管对高通量海气相互作用进行了研究，但在年际和季节变化方面仍然存在空白，导致对海洋环流和通流动力学的理解存在不确定性。具体而言，缺乏对季节性温度和盐度变化如何影响高热带地区洋流强度和方向的了解。本文研究了年际和不同季节的温度和盐度变化对海流模式的影响。我们使用了2019年至2023年的CROCO模型，并在2021年9月进行了观测。西北季风海温在28.3 ~ 29.8°C之间，东南季风海温在26.8 ~ 29.0°C之间。SSS变化在34.1 ~ 34.6 PSU之间，在0.5°S时，最大平均地下水量为−0.5479 ± 0.6583 Sv，表明向班达海输送。西北的海平面高度为~ 0.69 ~ ~ 0.73 m，东南季风的海平面高度为~ 0.66 ~ ~ 0.69 m。表层、次表层和中间层的密度分别为22.5、25.5和26.5 σ 。本研究促进了我们对HS环流动力学的影响因素及其对El Niño和La Niña事件的响应的认识，为印太水交换研究铺平了道路。

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引用次数: 0

Insufficient local methane and nitrous oxide production sustaining water column inventories at the Pearl River Estuary 本地甲烷和氧化亚氮产量不足，维持珠江口水柱存量

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-21 DOI: 10.1016/j.rsma.2026.104790

Zhengping Chen , Yijie Zheng , Rongxin Liu , Muhammad Firman Nuruddin , Jiying Li , Qixing Ji

The increasing anthropogenic input of organic matter and nutrients has rendered estuaries notable sources of methane and nitrous oxide. However, the processes causing the spatial heterogeneity of dissolved methane and nitrous oxide are complex, involving biogeochemical processes as well as anthropogenic influences. Nevertheless, the combined effects regulating spatial distribution differences remain unclear. In this study, we conducted a spatial survey in an economically vital subtropical tidal estuary. Our findings indicate that sedimentary methanogenesis and nitrous oxide production in both sediment and water columns play a minor role in regulating spatial variations of these gases. Contrastingly, waters near highly urbanized areas exhibited a higher potential for methane and nitrous oxide emissions, and this study is the first to report these concentrations in Hong Kong and Macao waters. The investigation in those regions has enhanced our understanding of estuarine greenhouse gas dynamics. The discrepancy between high concentrations and low production rates, along with certain isotope signatures, underscores the significance of external anthropogenic sources in regulating the distribution of greenhouse gases in estuaries. Our findings suggest that transient processes, such as occasional anthropogenic sources, may play an important role in regulating dissolved inventories.

人为输入的有机物和营养物的增加使河口成为甲烷和氧化亚氮的显著来源。然而，造成溶解甲烷和氧化亚氮空间异质性的过程是复杂的，涉及生物地球化学过程以及人为影响。然而，调节空间分布差异的综合效应仍不清楚。本文对具有重要经济意义的亚热带潮汐河口进行了空间调查。研究结果表明，沉积物和水柱中沉积产甲烷和氧化亚氮的产生对这些气体的空间变化起着次要的调节作用。相比之下，高度城市化地区附近的水域显示出更高的甲烷和一氧化二氮排放潜力，本研究首次报道了香港和澳门水域的甲烷和一氧化二氮浓度。这些地区的调查增强了我们对河口温室气体动力学的认识。高浓度和低产量之间的差异，以及某些同位素特征，强调了外部人为源在调节河口温室气体分布方面的重要性。我们的研究结果表明，短暂的过程，如偶尔的人为来源，可能在调节溶解库存中起重要作用。

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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 : 2026-01-20 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

Ecological risk assessment and trace metal distribution in surface water and sediments of the Bay of Bengal, India 印度孟加拉湾地表水和沉积物中痕量金属的生态风险评价与分布

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-19 DOI: 10.1016/j.rsma.2026.104789

Shanmugasundharam Arumugam , Sivakumar Karthikeyan , Ramachandran Annathurai , Saubhagya Ranjan Mahapatra

The current study assesses the spatial variability of physicochemical parameters, nutrients, and the distribution of trace metals in surface water and benthic sediments along the offshore Cuddalore region of the Bay of Bengal, India, and evaluates the associated ecological risk. Twenty-five surface water and sediment samples were collected between Cuddalore Harbour and Port Nova, an area impacted by industrial and residential effluents discharged via the Uppanar and Gadilam Rivers. Water analysis revealed a cation abundance order of Na > K > Mg > Ca, with nutrient concentrations ranging from 0.45 to 4.30 mg/l for nitrate and between 0.81 and 2.65 mg/l for phosphate, suggesting localized nutrient enrichment. Ecological risk indices applied to sediments indicated significant contamination: The Contamination Factor (CF) and Enrichment Factor (EF) for Cadmium (Cd) were consistently extreme (EF_mean ̴ 65), classifying the sediments as very severely contaminated and underscoring a non-crustal, anthropogenic source. Nickel (Ni) concentrations in the water column were found to be 4–6 times higher than established regional averages for the Bay of Bengal coast, also pointing to specific anthropogenic input. Principal Component Analysis (PCA) confirmed source differentiation: PC1 ( ̴ 34.25 % variance) showed high positive loadings for Fe, Mn, Cr, Cu, Ni, Pb, and Zn indicating a common lithogenic/anthropogenic source strongly controlled by fine-grained sediment texture. Significant positive correlations were observed between key pollutants (Co-Pb >0.80; Ni-Cd = 0.70), further supporting a common industrial origin. The systematic assessment concludes that anthropogenic activities are the main driver of increased trace metal content, posing a significant ecological threat to the coastal ecosystem.

本研究评估了印度孟加拉湾Cuddalore近海地区地表水和底栖沉积物中理化参数、营养物质和微量金属分布的空间变异性，并评估了相关的生态风险。在库达洛尔港和诺瓦港之间收集了25个地表水和沉积物样本，该地区受到乌帕纳尔河和加迪拉姆河排放的工业和居民污水的影响。水分析显示Na >； K >； Mg >； Ca的阳离子丰度顺序，硝酸盐的营养浓度在0.45 ~ 4.30 Mg /l之间，磷酸盐的营养浓度在0.81 ~ 2.65 Mg /l之间，表明局部营养富集。应用于沉积物的生态风险指数表明了严重的污染：镉（Cd）的污染因子（CF）和富集因子（EF）一直是极端的（ef均值为65），将沉积物分类为非常严重污染，并强调了非地壳的人为来源。发现水柱中的镍（Ni）浓度比孟加拉湾沿岸已确定的区域平均值高4-6倍 ，也指向特定的人为输入。主成分分析（PCA）证实了源分化：PC1（34.25 %方差）显示Fe， Mn, Cr, Cu, Ni， Pb和Zn的高正负荷，表明一个共同的岩石/人为源，受细粒沉积物质地的强烈控制。在主要污染物（Co-Pb = 0.80; Ni-Cd = 0.70）之间观察到显著的正相关，进一步支持共同的工业来源。系统评价认为，人类活动是导致沿海微量金属含量增加的主要原因，对沿海生态系统构成了严重的生态威胁。

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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 : 2026-01-17 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

Valuation of marine litter upcycling for sustainable resource circulation in Korea 韩国海洋垃圾升级循环对可持续资源循环的评价

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-16 DOI: 10.1016/j.rsma.2026.104780

Hyunji Lee , Tongjoo Suh

Marine litter poses severe ecological and societal challenges, yet most research on its management has emphasized technological recycling or engineering approaches. This study investigated marine litter upcycling as a pollution mitigation strategy, focusing on its broader value dimensions and social acceptance. A comprehensive framework encompassing environmental, social, cultural, design, and economic attributes was developed, using a conjoint-based public survey in Seoul and Busan, South Korea. Using rank-ordered logit models, the relative importance of attributes was estimated and the willingness to pay for upcycling initiatives was quantified. Environmental and design-related attributes were consistently the strongest drivers of preference, whereas economic costs exerted a negative effect. Cultural values are particularly salient in coastal regions, reflecting maritime identity, whereas inland residents emphasize environmental, social, cultural, and design aspects, though with less intensity in cultural dimensions, and exhibit greater price sensitivity. Gender and education heterogeneity were also evident: women and highly educated respondents placed greater importance on environmental and design benefits, whereas men attached stronger value to cultural dimensions. Households expressed a clear willingness to provide support for marine litter upcycling initiatives, highlighting its societal legitimacy and potential contribution to marine pollution mitigation. Overall, the results demonstrate the influence of marine litter upcycling in enhancing broader marine litter management efforts and its potential as a sustainable resource innovation driving circular economy transitions. The findings further suggest opportunities for integrating upcycling into broader policy frameworks, as part of regional marine litter action plans and international cooperative initiatives for sustainable coastal governance.

海洋垃圾带来了严重的生态和社会挑战，但大多数关于其管理的研究都强调技术回收或工程方法。本研究调查了海洋垃圾升级回收作为一种污染缓解策略，重点关注其更广泛的价值维度和社会接受度。通过在韩国首尔和釜山进行的联合公众调查，开发了一个包含环境、社会、文化、设计和经济属性的综合框架。使用秩序logit模型，估计了属性的相对重要性，并量化了为升级回收计划付费的意愿。环境和设计相关的属性一直是最强烈的偏好驱动因素，而经济成本则产生负面影响。文化价值在沿海地区尤其突出，反映了海洋身份，而内陆居民则强调环境、社会、文化和设计方面，尽管文化维度的强度较低，并且表现出更大的价格敏感性。性别和教育的异质性也很明显：女性和受过高等教育的受访者更重视环境和设计效益，而男性更重视文化维度。家庭明确表示愿意为海洋垃圾升级回收倡议提供支持，强调其社会合法性和对减轻海洋污染的潜在贡献。总体而言，研究结果表明了海洋垃圾升级回收在加强更广泛的海洋垃圾管理工作方面的影响，以及其作为可持续资源创新推动循环经济转型的潜力。研究结果进一步表明，有机会将升级回收纳入更广泛的政策框架，作为区域海洋垃圾行动计划和国际可持续沿海治理合作倡议的一部分。

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引用次数: 0

Growth study of Sarpa salpa in the Aegean Sea using three growth models 用三种生长模型研究爱琴海萨尔巴的生长

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-16 DOI: 10.1016/j.rsma.2026.104772

Bahar Bayhan , Ali Kara , Irmak Kurtul , Mert Minaz , Phillip J. Haubrock , Ali Serhan Tarkan , Cüneyt Kaya

In the Mediterranean, Salema Sarpa salpa is among the most economically important coastal fishes. Yet a major gap in its region-specific, and sex-disaggregated data on biology and growth constraining both precise stock assessments and long ecosystem-based fisheries management strategies in the eastern Mediterranean. To address this data deficiency, this study presents an integrative analysis of the species' biological traits, growth parameters, and population structure in İzmir Bay (eastern Aegean Sea, western Türkiye), using a full annual sampling of 319 individuals. Caught individuals comprised 105 males, 82 females, and 132 hermaphrodites. Total length ranged from 16.7 to 38.0 cm, with the most frequent class lengths being 24.1–27.0 cm (29 %) and 27.1–30.0 cm (25 %). The species exhibited isometric growth (b ≈ 3), indicating that weight increases proportionally with length, while gonadosomatic index trends revealed that spawning occurs mainly in autumn. Among the three tested growth models (von Bertalanffy, Gompertz, Logistic), the von Bertalanffy model provided the best fit for the overall population (L∞ ≈ 46.6 cm, K ≈ 0.08), the Gompertz model for males (L∞ ≈ 35.9 cm, K ≈ 0.20), and the von Bertalanffy again for females and hermaphrodites (L∞ ≈ 38–43 cm). These findings indicate proportional length–weight growth and an autumn spawning period. Analysis of otoliths indicated that age-length relationships followed smooth growth patterns, with female size exceeding males in later age classes. Collected data on Sarpa salpa in İzmir Bay provides valuable baseline data for this species’ regional biology; knowledge crucial to fishery management, stock assessment, and ecological monitoring that may serve as a foundation for sustainable conservation of the Aegean Sea.

在地中海，Salema Sarpa salpa是最具经济价值的沿海鱼类之一。然而，其关于生物和生长的特定区域和按性别分列的数据存在重大差距，限制了地中海东部精确的种群评估和基于生态系统的长期渔业管理战略。为了解决这一数据的不足，本研究对İzmir湾（爱琴海东部，基耶岛西部）的物种生物学特性、生长参数和种群结构进行了综合分析，使用了319个完整的年度采样。捕获的个体包括105个雄性，82个雌性和132个雌雄同体。总长度为16.7 ~ 38.0 cm，最常见的类长度为24.1 ~ 27.0 cm（29 %）和27.1 ~ 30.0 cm（25 %）。鱼种呈等长生长（b≈3），表明体重随体长成比例增加，而性腺指数趋势显示产卵主要发生在秋季。在三种被检验的生长模型（von Bertalanffy、Gompertz、Logistic）中，von Bertalanffy模型对总体的拟合效果最好（L∞≈46.6 cm, K≈0.08），Gompertz模型对雄性的拟合效果最好（L∞≈35.9 cm, K≈0.20），von Bertalanffy模型对雌性和雌雄同体的拟合效果最好（L∞≈38-43 cm）。这些发现表明了长度和重量的比例增长和秋季产卵期。对耳石的分析表明，年龄-长度关系遵循平滑的生长模式，在较晚的年龄组中，女性的体型超过男性。收集到的İzmir湾萨尔巴的数据为该物种的区域生物学提供了有价值的基线数据；对渔业管理、种群评估和生态监测至关重要的知识，可作为爱琴海可持续养护的基础。

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引用次数: 0

Potential ecological risk from microplastics and additives in the environment and mangrove-associated oysters: The case of a Ramsar coastal lagoon in the Gulf of Mexico 环境中的微塑料和添加剂以及与红树林有关的牡蛎的潜在生态风险：以墨西哥湾拉姆萨尔沿海泻湖为例

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-16 DOI: 10.1016/j.rsma.2026.104783

G.M. Austria-Ortíz , J.E. Sedeño-Díaz , A. Reyes-Márquez , R. Delgado-Macuil , E. López-López

Microplastic pollution is an emerging environmental concern. Microplastics (MPs), in addition to polymers, contain additives, intended to enhance plastic properties. Ecological risk assessments of MPs, usually consider only the polymers. In this study, we advance MPs' risk analysis by incorporating additives into ecological risk indices. Since some additives pose high hazard scores, their inclusion can increase the estimated values of the MPs-induced risk index (H) and the Potential Ecological Risk Index (PERI), thereby providing a more comprehensive and realistic evaluation of MPs' ecological risks. The Tampamachoco Estuarine-Lagoon System (Gulf of Mexico) faces multiple human-related stressors that contribute to plastic pollution. We evaluated the abundance, spatial distribution, and ecological risk indices of MPs in surface water, mid-water, sediment, and oysters (farmed and wild) during dry and rainy seasons. MPs and additives were extracted: from water by direct filtration; from sediments using ZnCl₂ (density suspension ρ ≈ 1.6 g/cm³) and filtration; and from oyster tissue by H₂O₂ digestion and filtration. We used µFTIR analysis to identify the polymers and additives. The average MP concentration was oysters > sediment > mid-water > surface water in both seasons. In oysters, MP load was higher in the dry season (4.73 ± 1.08 MPs/gww) than in the rainy season (1.22 ± 0.31 MPs/gww) (p < 0.05). Eleven kinds of plastic were identified, including additives. The Pollution Load Index (PLI) across all seasons and matrices indicated a minor risk (<10). In contrast, the H index revealed extreme danger risks (>1000), while PERI ranged from minor to medium (oysters), high (sediment), to extreme danger (surface and mid-water).

微塑料污染是一个新兴的环境问题。微塑料（MPs），除了聚合物，含有添加剂，旨在提高塑料性能。MPs的生态风险评估，通常只考虑聚合物。在本研究中，我们提出了将添加剂纳入生态风险指标的MPs风险分析。由于某些添加剂具有较高的危害评分，因此将其纳入可以提高MPs诱导风险指数(H)和潜在生态风险指数（PERI）的估计值，从而更全面、更真实地评价MPs的生态风险。Tampamachoco河口-泻湖系统（墨西哥湾）面临着多种与人类有关的压力因素，这些压力因素导致了塑料污染。研究了旱季和雨季地表水、中水、沉积物和牡蛎（养殖和野生）中MPs的丰度、空间分布和生态风险指数。采用直接过滤法从水中提取MPs和添加剂；采用ZnCl2（密度悬浮液ρ≈1.6 g/cm³）过滤；通过H2O2消化和过滤从牡蛎组织中提取。我们使用微红外光谱分析来鉴定聚合物和添加剂。两个季节的平均MP浓度分别为牡蛎>； 沉积物>； 中水>； 地表水。牡蛎干季MP负荷（4.73 ± 1.08 MPs/gww）高于雨季（1.22 ± 0.31 MPs/gww）（p <； 0.05）。包括添加剂在内，共鉴定出11种塑料。所有季节和基质的污染负荷指数（PLI）均显示风险较小（<10）。相比之下，H指数显示极端危险风险（>1000），而PERI从轻微到中等（牡蛎），高（沉积物）到极端危险（水面和中层）。

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引用次数: 0

Coastal people’s local ecological knowledge on horseshoe crabs from Tawi-Tawi, Philippines: Implications for conservation 菲律宾Tawi-Tawi沿岸居民对马蹄蟹的当地生态知识：对保护的启示

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-16 DOI: 10.1016/j.rsma.2026.104784

Quesie T. Omnos , Wella T. Tatil , Mudjekeewis D. Santos , Rizal Jhunn F. Robles , Khadiza H. Imlan , Mohammad-Norodom H. Ajik , Ivane R. Pedrosa-Gerasmio

Horseshoe crabs, ancient aquatic arthropods with ecological and medicinal importance, remain understudied in Tawi-Tawi, Philippines. Despite community observations, no formal records exist for Tawi-Tawi, limiting regional conservation planning. This study examined the local ecological knowledge of coastal people regarding horseshoe crabs in Tawi-Tawi to identify their distribution, use, and population trends, providing a baseline for conservation. Data were recorded from semi-structured interviews and analyzed descriptively. A total of 142 respondents provided detailed insights into the local distribution, habitats, population trends, perceptions, and consumption of horseshoe crabs in their areas. The locals identified two distinct species of horseshoe crabs, with features resembling those of Tachypleus tridentatus and Carcinoscorpius rotundicauda. A live specimen of the latter was also verified during the visit. Most respondents perceived a population decline attributed to human impacts and environmental changes. Horseshoe crabs are commonly captured only by hand (93 %), with uses in traditional medicine and rituals. This study provides the first scientific evidence of horseshoe crab presence in Tawi-Tawi. The findings lay the groundwork for strategic management and emphasize the urgent need for effective conservation.

马蹄蟹是一种具有生态和药用价值的古老水生节肢动物，在菲律宾的Tawi-Tawi仍未得到充分研究。尽管有社区的观察，但没有Tawi-Tawi的正式记录，限制了区域保护规划。本研究调查了Tawi-Tawi沿海居民关于马蹄蟹的当地生态知识，以确定其分布、利用和种群趋势，为保护马蹄蟹提供基线。从半结构化访谈中记录数据并进行描述性分析。共有142名受访者就其所在地区的马蹄蟹分布、生境、种群趋势、认知和消费情况提供了详细的见解。当地人发现了两种截然不同的马蹄蟹，它们的特征与三叉戟马蹄蟹和圆尾马蹄蟹相似。在访问期间，还核实了后者的活标本。大多数答复者认为人口减少归因于人类影响和环境变化。马蹄蟹通常只能用手捕获（93 %），用于传统医学和仪式。这项研究提供了第一个马蹄蟹在塔威-塔威存在的科学证据。研究结果为战略管理奠定了基础，并强调了有效保护的迫切需要。

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引用次数: 0