Regional Studies in Marine Science最新文献_第6页

Trophic interaction, niche overlap, and species-specific feeding responses of juvenile pleuronectid flatfishes after emigration from nursery grounds in Suo-Nada, western Seto Inland Sea, Japan 日本西濑户内海梭那达幼鱼洄游后的营养相互作用、生态位重叠和物种特异性摄食反应

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-07 DOI: 10.1016/j.rsma.2026.104761

Alvin H. Bantiquete , Tetsuo Yamada , Yui Ichikawa , Hiroyuki Sudo , Takeshi Tomiyama

Understanding the trophic interactions, niche overlap, and species-specific responses of emigrating pleuronectid juveniles provide insights into interspecific competition in shared habitats. The diet information of commercially important flatfishes in shallow nursery grounds has been well-studied in Suo-Nada, western Seto Inland Sea, Japan, whereas such information after emigration from the habitat is limited. This study aimed to reveal feeding relationships between three pleuronectid flatfishes – Pseudopleuronectes yokohamae, Platichthys bicoloratus, and Pleuronichthys lighti – and to assess seasonal changes in their feeding activity and somatic condition after emigration. As P. yokohamae and P. bicoloratus occurred in shallow nursery grounds from February to April, the post-nursery individuals were collected in the fishing ground by bottom trawl fisheries from May to August 2023. Diet composition showed that P. bicoloratus consistently consumed polychaetes, whereas P. lighti and P. yokohamae showed dietary shifts from polychaetes toward gammarids and caprellids with observed high dietary similarity between the three species. Regardless of the dietary overlap, stomach fullness decreased with the season progressed for P. yokohamae and P. bicoloratus, whereas P. lighti having a stable progression indicating different responses among the three species. Overall, feeding activity declined as the season progressed, although P. yokohamae showed pronounced mid-season increase in June before the feeding activity decreased sharply in July. These results indicate that the three pleuronectid species continue feeding after emigration from the shallow nursery grounds, but the seasonal changes in their feeding activity vary, reflecting species-specific responses to the season progression.

了解迁徙的胸膜联幼鱼的营养相互作用、生态位重叠和物种特异性反应，有助于了解共同栖息地的种间竞争。在日本濑户内海西部的梭那达，人们对具有重要商业价值的比目鱼在浅水育苗场的饮食信息进行了很好的研究，但这些信息在离开栖息地后却很有限。本研究旨在揭示三种胸鳍比目鱼（Pseudopleuronectes yokohamae， Platichthys bicoloratus和Pleuronichthys light）的摄食关系，并评估它们洄游后摄食活动和躯体状况的季节变化。2023年2 - 4月，横滨和双色斑腹鱼主要在浅水育苗场繁殖，5 - 8月在渔场采用底拖网捕捞方式采集育苗后个体。饮食结构表明，双色螯虾一贯以多毛类为食，而光螯虾和横滨螯虾的饮食结构从多毛类向伽玛类和小毛类转变，且具有较高的相似性。无论饮食重叠与否，横滨假体和双色假体的胃饱度随季节的推移而减少，而光假体的胃饱度则稳定增长，这表明三种物种对胃饱度的反应不同。总体而言，摄食活动随着季节的进展而下降，尽管横滨滨虾在6月季中出现明显的增加，但在7月摄食活动急剧下降。这些结果表明，三种胸膜联生物种在离开浅层苗圃后继续摄食，但摄食活动的季节变化不同，反映了物种对季节进展的特异性反应。

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引用次数: 0

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 : 2026-01-06 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

First description of the emergence of targeted squid fisheries in the German North Sea demersal trawl fleet 首次描述了德国北海海底拖网船队中出现的目标鱿鱼渔业

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104738

Erik Sulanke , Ralf Döring , Daniel Oesterwind

As demersal fisheries in the southern North Sea are struggling for profitability, alternative high-value resources are in dire need. In the past few years, squid fishing has emerged as a profitable seasonal fishery. Due to the novelty of this fishery, detailed knowledge remains scarce, as no observer program has been facilitated yet, and catches are not reliably reported on the species level. Conclusions on the ecological and socio-economic implications of this novel strategy, therefore, remained speculative. We combined spatiotemporal hotspot data analysis and clustering techniques with onboard sampling to provide the first scientific description of this novel fishery. We identified a targeted fishery on the common squid Loligo vulgaris, taking place on highly localised fishing grounds, particularly four hotspots in the Southern North Sea and the Eastern English Channel, identified using Getis-Ord G statistics. Fishing activity followed a distinct seasonal trajectory shifting northwestwards from the beginning (October) towards the end (March) of the season. The economic relevance for the North Sea demersal fishing fleet is significant, as the share of overall revenues generated by squid rose from under 1 % in 2018–21 % in 2024. Targeted squid fishing requires considerable investments, but is, in terms of regulations, relatively open, as no quotas and only very few technical regulations apply under EU and UK law. Acknowledging the rapid increase of this fishery's economic importance, we highlight the need for commencing a strategic management process for emerging squid fisheries in the North Sea, ensuring long-term sustainability and avoiding ecological damage.

由于北海南部的底栖渔业难以盈利，因此迫切需要替代的高价值资源。在过去的几年里，鱿鱼捕捞已经成为一项有利可图的季节性渔业。由于这一渔业的新颖性，详细的知识仍然稀缺，因为还没有建立观察员计划，而且在物种水平上的渔获量也没有可靠的报告。因此，关于这项新战略的生态和社会经济影响的结论仍然是推测性的。我们将时空热点数据分析和聚类技术与船上采样相结合，首次对这种新型渔业进行了科学描述。根据Getis-Ord G统计数据，我们确定了一项针对普通鱿鱼Loligo vulgaris的目标渔业，该渔业在高度本地化的渔场进行，特别是北海南部和英吉利海峡东部的四个热点地区。捕鱼活动遵循明显的季节轨迹，从季节开始（10月）到结束（3月）向西北移动。鱿鱼对北海海底捕捞船队的经济意义重大，因为鱿鱼在总收入中所占的份额从2018年的1% %上升到2024年的1% %。有针对性的鱿鱼捕捞需要相当大的投资，但就法规而言，相对开放，因为在欧盟和英国法律下没有配额，只有很少的技术法规适用。鉴于该渔业的经济重要性迅速增加，我们强调有必要对北海新兴鱿鱼渔业启动战略管理进程，确保长期可持续性并避免生态破坏。

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引用次数: 0

Utilization of Okra seed extract as a natural coagulant for microplastic mitigation in Mystacoleucus padangensis from Lake Singkarak, Tanah Datar Region, Indonesia 利用秋葵籽提取物作为天然混凝剂对印尼塔纳达尔地区Singkarak湖的巴当密索菌的微塑料缓解

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104735

Zaki Aiwa Putra , Deswati Deswati , Olly Norita Tetra , Rahmiana Zein , Suparno Suparno , Hilfi Pardi

Microplastic pollution poses increasing ecological and health risks in freshwater systems, necessitating environmentally compatible mitigation strategies. This study explores the use of okra seed extract (Abelmoschus esculentus) as a natural coagulant for microplastic removal from Lake Singkarak water associated with the endemic fish Mystacoleucus padangensis. An exploratory screening approach was applied by varying coagulant concentration, contact time, and mixing speed under salt-free and salt-enhanced (5 % NaCl) conditions. The highest removal efficiency among the tested conditions (61.1 %) was achieved at an apparent optimum of 3 % extract concentration, 60-minute contact time, and 300 rpm stirring speed with NaCl addition. ATR-FTIR identified polyethylene terephthalate (PET) as the dominant polymer, while SEM and zeta potential analyses revealed charge neutralization and polymer bridging as key mechanisms. The Polymer Hazard Index (PHI = 2.54) indicates moderate ecological risk. Rather than maximizing efficiency alone, this study advances microplastic mitigation by integrating mechanistic insight, biological relevance, and risk-based evaluation in a realistic freshwater context, highlighting the sustainable potential of okra seed extract.

微塑料污染对淡水系统造成越来越大的生态和健康风险，因此必须采取环境相容的缓解战略。本研究探讨了使用秋葵种子提取物（Abelmoschus esculentus）作为天然混凝剂，去除Singkarak湖特有鱼类巴当密索鱼（Mystacoleucus padangensis）水中的微塑料。在无盐和加盐（5 % NaCl）条件下，通过改变混凝剂浓度、接触时间和混合速度进行探索性筛选。当萃取液浓度为3 %，接触时间为60 min， NaCl搅拌速度为300 rpm时，去除率最高，为61.1 %。ATR-FTIR鉴定聚对苯二甲酸乙二醇酯（PET）为主要聚合物，SEM和zeta电位分析显示电荷中和和聚合物桥接是主要机理。聚合物危害指数（PHI = 2.54）为中度生态风险。本研究不是仅仅最大化效率，而是通过在现实的淡水环境中整合机理见解、生物学相关性和基于风险的评估来推进微塑料缓解，强调了秋葵种子提取物的可持续潜力。

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引用次数: 0

Bioaccumulation of pharmaceuticals and cocaine in the liver, muscle and gonads of the Gulf toadfish Opsanus beta, a non-native species in the Brazilian coastal zone 药物和可卡因在海湾蟾蜍鱼的肝脏、肌肉和性腺中的生物积累，这是巴西沿海地区的一种非本地物种

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104745

Vinicius Roveri , Ursulla Pereira Souza , João Henrique Alliprandini da Costa , Thomas Alves Vidal , Murilo Alecsandro do Nascimento , Aírton Zogaib Rodrigues , Walber Toma , Alberto Teodorico Correia , Luciana Lopes Guimarães

The Gulf toadfish (Opsanus beta), a native species in nearshore habitats of Central America and the Caribbean, has established invasive populations in heavily urbanized estuaries of South America, such as the Santos-São Vicente Estuarine System (SSVES), Brazil. This study presents the first assessment of bioaccumulation of eight pharmaceutically active compounds (PhACs), representing various therapeutic classes, in the liver, muscle, and gonads of O. beta. Eight PhACs were detected in at least one tissue type [range: limit of quantification (LOQ) to 22.0 ng/g]: atenolol (ATE), caffeine (CAF), cocaine (COC), diclofenac (DIC), haloperidol (HAL), losartan (LOS), orphenadrine (ORP) and propranolol (PRO). Notably, this is the first report of HAL in marine biota from the Brazilian coastline. Concentrations varied across tissues: LOS, ATE, ORP, COC, and PRO were most abundant in the gonads; CAF was highest in muscle; and HAL showed the greatest accumulation in liver. Gonads exhibited the highest number of positive detections and the greatest total PhAC concentration, followed by muscle and liver. Given the osmoregulatory behaviour of marine teleosts, such as continuous seawater ingestion, exposure may occur not only via gill and dermal absorption but also through oral intake. These findings underscore the relevance of O. beta as a sentinel species for monitoring pharmaceutical contamination and suggest that non-native fishes may play a key role in the trophic transfer and distribution of emerging contaminants in impacted coastal ecosystems. Further research is needed to clarify the dynamics of PhAC bioaccumulation across different species and environmental contexts in Latin America.

湾蟾鱼（Opsanus beta）是中美洲和加勒比海近岸栖息地的一种本地物种，在南美洲高度城市化的河口，如巴西的santos - s o Vicente河口系统（SSVES），已经建立了入侵种群。本研究首次评估了八种药用活性化合物（PhACs）在O. β的肝脏、肌肉和性腺中的生物积累，这些化合物代表了不同的治疗类别。至少在一种组织类型中检出8种phac[定量限（LOQ）为22.0 ng/g]：阿替洛尔（ATE）、咖啡因（CAF）、可卡因（COC）、双氯芬酸（DIC）、氟哌啶醇（HAL）、氯沙坦（LOS）、奥非那林（ORP）和心得安（PRO）。值得注意的是，这是巴西海岸线海洋生物群中首次报道HAL。不同组织的浓度不同：LOS、ATE、ORP、COC和PRO在性腺中含量最高；肌肉中CAF最高；HAL在肝脏中积聚最多。生殖腺中PhAC阳性检测数最多，总PhAC浓度最高，其次为肌肉和肝脏。鉴于海洋硬骨鱼的渗透调节行为，例如持续摄入海水，暴露不仅可能通过鳃和皮肤吸收，也可能通过口服摄入。这些发现强调了O. β作为监测药物污染的哨兵物种的相关性，并表明非本地鱼类可能在受影响的沿海生态系统中新出现的污染物的营养转移和分布中发挥关键作用。需要进一步的研究来阐明拉丁美洲不同物种和环境背景下PhAC生物积累的动态。

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引用次数: 0

Evaluating polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) pollution in Algeria’s environment: Occurrence, levels and risk assessments: Insights from air, soil, and sediment studies – a review 评价阿尔及利亚环境中的多环芳烃（PAHs）和多氯联苯（PCBs）污染：发生、水平和风险评估：来自空气、土壤和沉积物研究的见解-综述

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104737

Lydia Bensadi, Moufok Azzoug

This review examines PAH and PCB contamination in Algeria’s sediments, soils, and atmosphere. PAHs primarily originate from domestic and industrial discharges, vehicular emissions, wildfires, and petroleum leaks, while PCBs persist due to historical use, improper disposal, and ongoing waste incineration despite a 1987 ban. Overall, concentrations were moderate compared with global levels, though some sites exhibited elevated ecological risks. In sediments, several stations showed high ecological risks for both PAHs and PCBs, with cancer risks ranging from very low to low. In soils, PAHs contributed to high ecological risks at some sites, while PCB concentrations generally remained within safe TEQ thresholds, with low associated cancer risk. Atmospheric PAH exposure posed low-to-moderate lung cancer risk, and PCB TEQ values indicated moderate toxicity potential. Research on PAH and PCB pollution in Algeria remains limited, with gaps in spatial and temporal coverage. Comprehensive nationwide monitoring is needed to better assess contamination and guide effective environmental and public health strategies.

本文综述了阿尔及利亚沉积物、土壤和大气中的多环芳烃和多氯联苯污染。多环芳烃主要来源于家庭和工业排放、车辆排放、野火和石油泄漏，而多氯联苯则由于历史使用、处置不当以及尽管1987年颁布了禁令，但仍在继续的垃圾焚烧而持续存在。总体而言，与全球水平相比，浓度处于中等水平，尽管一些地点显示出较高的生态风险。在沉积物中，几个站点显示多环芳烃和多氯联苯的生态风险很高，癌症风险从极低到低不等。在土壤中，多环芳烃在某些地点造成了高生态风险，而多氯联苯浓度通常保持在安全TEQ阈值范围内，相关癌症风险较低。大气多环芳烃暴露具有低至中等肺癌风险，PCB TEQ值显示中等毒性潜力。阿尔及利亚对多环芳烃和多氯联苯污染的研究仍然有限，在空间和时间覆盖方面存在差距。需要在全国范围内进行全面监测，以便更好地评估污染并指导有效的环境和公共卫生战略。

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引用次数: 0

Ecology of sandy beaches in Vietnam: Exploring the effects of environmental gradients and local microplastic pollution for macro – and meiofauna distribution 越南沙滩生态：探索环境梯度和当地微塑料污染对大型和小型动物分布的影响

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104726

My Yen Nguyen , Ann Vanreusel , Xuan Quang Ngo , Carl Van Colen

Benthic communities play a vital role in ecosystem functioning, closely linked to sediment characteristics and potentially affected by microplastic (MPs) contamination. This study presents the first characterization of macrofaunal and meiofaunal distribution patterns on three Vietnamese sandy beaches with differing morphodynamics and management regimes, in order to examine the influence of environmental gradients and local MP pollution. Environmental variables (Chlorophyll a, total organic matter, grain size) and MPs (concentration, polymer types) were measured across high-, mid-, and low-tide zones. Benthic assemblages differed markedly between dissipative and reflective beaches. On the dissipative Bai Sau beach, a clear spatial zonation pattern was evident for both faunal groups, with the mid- and low-tide zones hosting the highest diversity and abundance. Reflective beaches exhibited less distinct zonation. Distribution patterns varied between macrofauna and meiofauna, underscoring the importance of including multiple faunal groups in ecological assessments. Microplastic polymer types (PP, PET, and PS) were associated with community composition differences for both benthos groups in addition to food availability and grain size. Our findings underscore the need for continued investigation into the effects of MPs on benthic fauna and the underlying mechanisms, particularly ecophysiological implications for organism fitness. Moreover, spatio-temporal variations in feeding plasticity and ingestion-egestion dynamics in relation to local pollution dynamics, as well as species’ roles in bioaccumulation in the food web need to better understand, before their potential of beach invertebrates as bioindicators of MP pollution can be considered. In addition, the protection of beach ecosystems calls for targeted management measures that mitigate pollution sources across coastal, riverine, and marine systems in concert with the natural processes governing MP deposition in sediments.

底栖生物群落在生态系统功能中起着至关重要的作用，与沉积物特征密切相关，并可能受到微塑料污染的影响。本研究首次对越南三个不同形态动力学和管理制度的沙滩上的大型动物和小型动物分布模式进行了表征，以研究环境梯度和当地MP污染的影响。环境变量（叶绿素a、总有机质、颗粒大小）和MPs（浓度、聚合物类型）在高、中、低潮区被测量。底栖生物群落在耗散海滩和反射海滩之间存在显著差异。在耗散型白秀海滩上，动物类群具有明显的空间分带格局，中低潮区具有最高的多样性和丰度。反射海滩表现出较不明显的分区。大型动物和小型动物的分布模式各不相同，强调了在生态评估中纳入多种动物类群的重要性。微塑料聚合物类型（PP、PET和PS）除了与食物可得性和颗粒大小有关外，还与这两个底栖动物群体的群落组成差异有关。我们的研究结果强调需要继续研究MPs对底栖动物的影响及其潜在机制，特别是对生物适应性的生态生理影响。此外，在考虑海滩无脊椎动物作为MP污染生物指标的潜力之前，需要更好地了解与当地污染动态相关的摄食可塑性和摄食-消化动力学的时空变化，以及物种在食物网中的生物积累作用。此外，海滩生态系统的保护需要有针对性的管理措施，以减轻沿海、河流和海洋系统的污染源，并与控制沉积物中MP沉积的自然过程相一致。

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引用次数: 0

Marine litter pollution impacts the sustainability of coastal mangrove ecosystems; an assessment via index-based approach 海洋垃圾污染影响沿海红树林生态系统的可持续性；通过基于索引的方法进行评估

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104717

H.P.A. Rupasinghe , I.J.J.U.N. Perera , R.D.C. Sandaruwan , H.P.S. Jayapala , B.K.A. Bellanthudawa , Asanka Tennakoon

Globally, the detrimental effects of anthropogenic marine debris on mangrove ecosystems have drawn considerable scientific and public concern. Yet, in Sri Lanka, where mangroves represent a vital component of coastal resilience and blue carbon storage, the in-depth research on litter contamination in mangrove ecosystems and its ecological consequences remains poorly studied. With that motivation, this present study examined the abundance, composition and pollution status of marine macro litter (>2.5 cm) and impacts on mangrove vegetations at four mangrove sites in Sri Lanka (Kallady, Negombo, Kandakuliya, and Balapitiya), located along the coastline of the northern Indian Ocean. Clean Coast Index (CCI), Plastic Abundance Index (PAI), Hazardous Item Index (HII), and Environmental Status Index (ESI) were used to evaluate the mangrove floor pollution levels. A total of 6527 litter items were collected from four beaches representing 8 typologies. The average density of the litter collected was 0.47–0.87 items/m². Plastic items constituted the majority of litter found, accounting for 60 %. According to the CCI, four mangrove areas were classified as 'moderate' and 'dirty.' All locations fell under category 'II' on the III, indicating the presence of some hazardous marine debris scattered across sites. The PAI indicated 'low' to 'moderate' plastic contamination, while the ESI classified all sites as having a 'bad' environmental status. Correlation analysis revealed a strong positive relationship between total litter density and physical damage impact categories, including damaged roots, leaves, and branches. To conserve these valuable habitats, the study recommends taking remedial measures to reduce incoming litter loads and to remove existing litter from the mangroves, despite ongoing awareness and cleanup efforts.

在全球范围内，人为海洋垃圾对红树林生态系统的有害影响引起了相当大的科学和公众关注。然而，在斯里兰卡，红树林是海岸恢复力和蓝碳储存的重要组成部分，对红树林生态系统中凋落物污染及其生态后果的深入研究仍然很少。基于这一动机，本研究在位于北印度洋海岸线的斯里兰卡的四个红树林地点（Kallady、Negombo、Kandakuliya和Balapitiya）调查了海洋大型废弃物（2.5 cm）的丰度、组成和污染状况，以及对红树林植被的影响。采用清洁海岸指数（CCI）、塑料丰度指数（PAI）、有害物品指数（HII）和环境状况指数（ESI）评价红树林地面污染水平。从4个海滩共收集到6527件垃圾，代表8种类型。收集到的凋落物平均密度为0.47 ~ 0.87件/m2。塑料物品构成了发现的垃圾的大部分，占60% %。根据CCI，四个红树林地区被划分为“中度”和“污染”。所有地点都属于第三类的“II”类，这表明在这些地点散布着一些危险的海洋碎片。PAI表示塑料污染程度为“低”至“中等”，而ESI将所有地点归类为“糟糕”的环境状况。相关分析表明，凋落物总密度与根、叶、枝等物理损害类型呈显著正相关。为了保护这些宝贵的栖息地，该研究建议采取补救措施，减少传入的垃圾负荷，并从红树林中清除现有的垃圾，尽管正在进行意识和清理工作。

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引用次数: 0

First baseline study on polymetallic passive biomonitoring of Polycarpa aurata in coral reef ecosystems in Southeast Sulawesi, Indonesia. 印度尼西亚苏拉威西岛东南部珊瑚礁生态系统多金属被动生物监测首次基线研究。

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104740

Mimie Saputri , Yusnaini Yusnaini , Muhammad Zainuri , Ita Widowati , Asriyana Asriyana , Samsul Muarrif , Maud Brault-Favrou , Carine Churlaud , Thierry Guyot , Gilles Radenac , Denis Fichet , Hélène Thomas

This pioneering study investigates the use of the tunicate Polycarpa aurata for assessing polymetallic pollution in Southeast Sulawesi, Indonesia. Over the course of one year, encompassing both rainy and dry seasons, potentially toxic elements (PTE) such as metal elements were examined in the tunic and soft body of P. aurata. The research revealed site-specific variations in element trace concentrations, with a mining site exhibiting elevated levels of multiple metals (like As 12.65 μg/g DW, Cd 0.34 μg/g DW, Co 31.17 μg/g DW, Cu 10.88 μg/g DW and Ni 173.50 μg/g DW). A correlation was observed between metal concentrations in P. aurata and those in sediment and suspended particles. Comparing the 2 tissues analysed (soft body and tunic), we note that certain metal elements, including arsenic (BSAF 8,99), cadmium (6,38), copper (2,84), and zinc (5,28), accumulated preferentially in the soft body of P. aurata, while nickel accumulation was minimal compared to sediment levels (BSAF Ni 1,12). This study establishes a baseline for passive biomonitoring of Indonesian coral reefs, demonstrating that ascidians like P. aurata are effective candidates for monitoring metal pollution in these marine environments. The findings contribute to addressing contemporary environmental challenges by highlighting the potential of marine organisms in chemical monitoring and biomonitoring programs for pollutant identification and environmental quality assessment.

这项开创性的研究调查了在印度尼西亚苏拉威西岛东南部使用被囊动物Polycarpa aurata来评估多金属污染。在一年多的时间里，包括雨季和旱季，对白桦的外衣和软体中的金属元素等潜在有毒元素（PTE）进行了检测。研究揭示了元素痕量浓度在不同地点的差异，其中一个矿区的多种金属含量较高（As 12.65 μg/g DW, Cd 0.34 μg/g DW, Co 31.17 μg/g DW, Cu 10.88 μg/g DW和Ni 173.50 μg/g DW）。金莲中金属含量与沉积物和悬浮颗粒中金属含量存在相关性。比较分析的两种组织（软体和外衣），我们注意到某些金属元素，包括砷（BSAF 8,99）、镉（6,38）、铜（2,84）和锌（5,28），优先在金银松软体中积累，而镍的积累与沉积物水平相比是最小的（BSAF Ni 1,12）。本研究为印度尼西亚珊瑚礁的被动生物监测建立了基线，证明了像P. aurata这样的海鞘是监测这些海洋环境中金属污染的有效候选者。通过强调海洋生物在污染物识别和环境质量评估的化学监测和生物监测计划中的潜力，这些发现有助于解决当代环境挑战。

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引用次数: 0

Benthic marine litter in the Black Sea: Hydrodynamic drivers, depth-related accumulation, and implications for regional management 黑海底栖海洋垃圾：水动力驱动、深度相关堆积和对区域管理的影响

IF 2.4 4区环境科学与生态学 Q3 ECOLOGY

Regional Studies in Marine Science

Pub Date : 2026-01-01 DOI: 10.1016/j.rsma.2025.104741

Murat Dağtekin , Ahmet Raif Eryaşar , Kenan Gedik , Cemil Altuntaş , Onur Yılmaz , Mehmet Adigüzel , Recep Parlak , Hakan Göndem , Bedrettin Duman , Batıkan Bilir , Ömer Kalıpçı

This study provides a comprehensive and standardized assessment of benthic marine litter along the Turkish Black Sea coast, based on 191 bottom trawl hauls conducted across three seasons and 69 stations following the standardized MEDITS/iBotS protocol. Sampling was performed along the southern Black Sea coast between İğneada and Hopa, covering five distinct depth strata ranging from 0 to 125 m. Marine litter was classified into eight main categories and twenty-six subcategories. To analyze the drivers of litter distribution, a Generalized Additive Model (GAM) was employed to examine the effects of latitude, longitude, depth, and seasonality. The mean benthic litter density was 639 ± 54 items/km², with plastics representing the dominant component (77 % of all items; 497 ± 52 items/km²). Spatial patterns revealed pronounced heterogeneity, with litter densities ranging from 7.97 to 6272.54 items/km² and eight accumulation hotspots exceeding 1000 items/km². Six of these hotspots occurred in the Eastern Black Sea, a pattern influenced by the Rim Current and coastal eddies. Depth played a critical role in structuring benthic litter distribution. Litter abundance exhibited a distinct peak at 50–75 m. A Generalized Additive Model (GAM) revealed significant non-linear effects of latitude, longitude, and depth on benthic litter abundance, while seasonality showed no significant influence. Overall, the findings demonstrate that the benthic environment of the Black Sea is substantially impacted by plastic-dominated litter. The study underscores the value of bottom-trawl–based monitoring for detecting seafloor litter and highlights the potential role of commercial trawl fleets in removing accumulated litter.

本研究根据标准化MEDITS/iBotS协议，在三个季节和69个站点进行了191次海底拖网捕捞，对土耳其黑海沿岸的底栖海洋垃圾进行了全面和标准化的评估。采样沿黑海南部海岸İğneada和Hopa之间进行，覆盖0至125 m的五个不同深度地层。将海洋垃圾分为8大类和26个亚类。为了分析凋落物分布的驱动因素，采用广义加性模型（GAM）考察了纬度、经度、深度和季节性对凋落物分布的影响。底栖动物凋落物平均密度为639 ± 54件/km²，其中塑料占主要成分（77 %；497 ± 52件/km²）。研究区凋落物密度在7.97 ~ 6272.54件/km²之间，有8个累积热点超过1000件/km²。这些热点中有六个发生在黑海东部，这种模式受到环流和沿海漩涡的影响。深度在底栖动物凋落物分布中起着关键作用。凋落物丰度在50 ~ 75 m处有明显的峰值。广义加性模型（GAM）显示，纬度、经度和深度对底栖动物凋落物丰度有显著的非线性影响，而季节对底栖动物凋落物丰度的影响不显著。总的来说，研究结果表明，黑海的底栖环境受到塑料垃圾的严重影响。该研究强调了以底拖网为基础的海底垃圾监测的价值，并强调了商业拖网船队在清除堆积垃圾方面的潜在作用。

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引用次数: 0