Marine pollution bulletin最新文献_第7页

Low levels of munition compounds in commercially-available seafood from the North Sea and Baltic Sea pose limited risk to human seafood consumers 北海和波罗的海市售海产品中含有低水平的弹药化合物，对人类海产品消费者构成的风险有限

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-21 DOI: 10.1016/j.marpolbul.2026.119281

Tabea Mumberg , Aaron J. Beck , María Martínez-Cabanas , Kathleen J. Gosnell , Martha Gledhill , Eric P. Achterberg

Relic munitions from World Wars I and II contaminate coastal waters worldwide. Toxic chemicals such as 2,4,6-trinitrotoluene (TNT) from underwater munitions (munition compounds, MCs) pose a risk to marine ecosystems and potentially human seafood consumers. Uptake of MCs by aquatic organisms and subsequent toxic effects have been shown in laboratory experiments and in field-collected samples of demersal fish and mussels, but the risk to human seafood consumers is not yet clear. Here, we report MC analyses of commercially-available fish from the North and Baltic Seas. Mercury (Hg) was also measured to compare the consumer risk from MCs to that of a common and better characterized marine contaminant that also has a potential source from underwater munitions. TNT and its metabolite compounds, amino-dinitrotoluene (ADNT) and diamino-nitrotoluene (DANT), were the most frequently detected MCs, but MCs were present only at very low levels in the tested seafood samples (0.07 ± 0.02 ng g⁻¹, 1.93 ± 3.2 ng g⁻¹, 5.57 ± 5.45 ng g⁻¹, 0.02 ± 0.01 ng g⁻¹, and 0.46 ± 0.34 ng g⁻¹-wet weight for TNT, ADNT, DANT, dinitrobenzene (DNB), and hexahydro-1,3,5-trinitro-1,3,5-triazinane (RDX), respectively; average ± S.D.). In comparison, Hg content in fish was variable (210 ± 219 ng g⁻¹-dry weight) and generally increased with trophic level. The results indicate that MC content in commercially available seafood poses negligible risk to human consumers when compared to oral reference doses, and Hg levels were higher but below the tolerable weekly intake established by the European Food Safety Authority for most seafood consumers.

第一次和第二次世界大战遗留下来的军火污染着世界各地的沿海水域。来自水下弹药（弹药化合物）的2,4,6-三硝基甲苯（TNT）等有毒化学物质对海洋生态系统和潜在的人类海产品消费者构成风险。实验室实验和实地采集的底栖鱼类和贻贝样本显示了水生生物对MCs的吸收和随后的毒性效应，但对人类海产品消费者的风险尚不清楚。在这里，我们报告了来自北海和波罗的海的商业鱼类的MC分析。还测量了汞（Hg），以比较mc对消费者的风险与一种常见的、特征更明确的海洋污染物的风险，这种污染物也可能来自水下弹药。TNT及其代谢物氨基二硝基甲苯（ADNT）和二氨基硝基甲苯（DANT）是最常检测到的MCs，但在测试的海产品样品中，MCs的含量很低（TNT、ADNT、DANT、二硝基苯（DNB）和六氢-1,3,5-三硝基-1,3,5-三嗪（RDX）的湿重分别为0.07±0.02 ng g -1、1.93±3.2 ng g -1、5.57±5.45 ng g -1、0.02±0.01 ng g -1和0.46±0.34 ng g -1）；平均值±标准差)。相比之下，鱼类的汞含量是可变的（210±219 ng g−1-干重），并且随着营养水平的增加而增加。结果表明，与口服参考剂量相比，市售海产品中的MC含量对人类消费者构成的风险可以忽略不计，汞含量较高，但低于欧洲食品安全局为大多数海产品消费者制定的每周可耐受摄入量。

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引用次数: 0

Spatial patterns of macro-debris and microplastic pollution in Sri Lankan mangrove ecosystems: Insights from Rekawa and Negombo 斯里兰卡红树林生态系统中宏观碎片和微塑料污染的空间格局：来自Rekawa和Negombo的见解

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-21 DOI: 10.1016/j.marpolbul.2026.119275

K.P.G.K.P. Guruge , B.A.A.D. Bamunuarachchi , Tharindu Bandara , B.M.C.A. Bandara , W.K. Suwandhahannadi , H.P.T.S. Hewathilake , P.B.T.P. Kumara

Macro-debris and microplastic abundance in the surface soil of mangroves were investigated at the Negombo and Rekawa sites in Sri Lanka. Macro-debris abundance was significantly higher at the Negombo site (664.8 ± 87.47 debris/100 m²) than at the Rekawa site (1.53 ± 1.32 debris/100 m²). At Negombo, plastic was the dominant macro-debris type (56.25%), whereas metal predominated at Rekawa (43.48%). A significant positive relationship between macro-debris abundance and the percentage cover of mangrove aerial roots was observed at Negombo, highlighting the role of these roots as traps for debris. Microplastic abundance in surface soil was also higher at Negombo than at Rekawa (Dunn's test, p < 0.05), with blue microfibres being the dominant type at both sites. Overall, both macro-debris and microplastic pollution were significantly greater at Negombo compared to Rekawa. Consequently, our study highlights the need to implement a robust plan for managing macro-debris pollution, promote environmental education on reducing, reusing, and recycling plastics, and enforcing stricter waste management and plastic production regulations to conserve the mangrove ecosystems at both sites.

对斯里兰卡尼甘布和雷卡瓦红树林表层土壤中的宏观碎屑和微塑料丰度进行了调查。尼甘布遗址的宏观碎屑丰度（664.8±87.47块/100 m2）显著高于利川遗址（1.53±1.32块/100 m2）。在尼甘布以塑料为主（56.25%），而在Rekawa以金属为主（43.48%）。在尼甘布观察到宏观碎屑丰度与红树林气生根覆盖百分比之间存在显著的正相关关系，突出了这些根系作为碎屑陷阱的作用。表层土壤中的微塑料丰度在尼甘布也高于Rekawa (Dunn的测试，p < 0.05)，蓝色微纤维是两个地点的主要类型。总体而言，尼甘布的宏观垃圾和微塑料污染都明显大于利川。因此，我们的研究强调需要实施强有力的计划来管理宏观碎片污染，促进减少、再利用和回收塑料的环境教育，并执行更严格的废物管理和塑料生产法规，以保护这两个地点的红树林生态系统。

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引用次数: 0

Metagenomic insights into the trophic gradient influence on nitrogen cycling microbiomes in plateau lakes 高原湖泊营养梯度对氮循环微生物组影响的宏基因组研究

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-21 DOI: 10.1016/j.marpolbul.2026.119288

Sicen Yan , Hafiz Adeel Ahmad , Yongchao Xie , Shufeng Liu , Jiang Wu , Jiaxin Cui , Bo Yang , Lei Su , Tengda Ding , Tang Liu

The increasing prevalence of nitrogen (Nr) pollution in lake ecosystems is a growing global concern. Understanding the dynamics of Nr-cycling microbial communities in these environments is crucial for assessing how ecosystem processes and functions respond to trophic gradients. This study investigates the microbial Nr-metabolism in plateau lakes with varying trophic states across a broad geographical range. A detailed metagenomic study revealed that increasing trophic status index (TSI) reduced the α-diversity of Nr-cycling microbial communities, while TSI and altitude jointly shaped the β-diversity patterns. The Nr-cycling microorganisms predominantly belonged to the phylum Proteobacteria, with the most abundant functional genes associated with organic Nr degradation and synthesis, dissimilatory/assimilatory nitrate reduction to ammonium (DNRA and ANRA), and denitrification processes (DNiF). Key Nr functional genes exhibited differential enrichment across lakes, indicating changes in Nr-metabolism strategies along the trophic gradient. A total of 126 metagenome-assembled genomes (MAGs) contributed to Nr-cycling, with the majority assigned to Proteobacteria (36) and Planctomycetes (25). Among these, MAG110 was enriched in eutrophic lakes and possessed near-complete DNiF and ANRA pathways, while MAG115, predominant in oligotrophic lakes, relied solely on ANRA. This functional divergence reflects trophic-specific ecological adaptations, that denitrification is favored in nutrient-rich, low-oxygen conditions and Nr- retention is prioritized under Nr-limited environments. Moreover, enzymes like nitronate monooxygenase (encoded by both genomes) and nitroalkane oxidase highlight a novel metabolic interaction between Nr-transformations and organic C1 compound oxidation in freshwater ecosystems. Overall, this study highlights the complex relationship among trophic status, microbial diversity, and Nr-metabolism in lake ecosystems.

湖泊生态系统中氮（Nr）污染的日益普遍已成为全球关注的问题。了解这些环境中氮循环微生物群落的动态对于评估生态系统过程和功能如何响应营养梯度至关重要。本研究在广泛的地理范围内研究了不同营养状态的高原湖泊微生物氮代谢。宏基因组研究表明，营养状态指数（TSI）的升高降低了氮循环微生物群落的α-多样性，而TSI和海拔共同塑造了β-多样性格局。Nr循环微生物主要属于变形菌门，具有最丰富的与有机Nr降解和合成、异化/同化硝酸还原为铵（DNRA和ANRA）和反硝化过程（DNiF）相关的功能基因。关键Nr功能基因在不同湖泊的富集程度存在差异，表明不同湖泊的Nr代谢策略在营养梯度上发生了变化。共有126个宏基因组组装基因组（MAGs）参与了nr循环，其中大多数属于变形菌（36）和plantomycetes（25）。其中，MAG110在富营养化湖泊中富集，具有接近完整的DNiF和ANRA通路，而MAG115在贫营养化湖泊中占主导地位，仅依赖ANRA通路。这种功能差异反映了营养特异性的生态适应，即在富营养、低氧条件下有利于反硝化，而在Nr限制的环境下优先保留Nr。此外，像硝酸盐单加氧酶（由两个基因组编码）和硝基烷烃氧化酶这样的酶强调了淡水生态系统中nr转化与有机C1化合物氧化之间的一种新的代谢相互作用。总之，本研究突出了湖泊生态系统营养状况、微生物多样性和氮代谢之间的复杂关系。

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引用次数: 0

Experimental nutrient enrichment during thermal stress reduces bleaching severity in an oligotrophic reef setting, Maldives 热应激期间的实验营养物富集减少了马尔代夫贫营养珊瑚礁环境中白化的严重程度

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-20 DOI: 10.1016/j.marpolbul.2026.119305

Jessica Arnull , Aminath Shaha Hashim , Raja S. Ganeshram , A. Meriwether W. Wilson , Hassan Moosa , David S. Reay , Aishath Mufliha Ziyadh , Alexander W. Tudhope

Coral bleaching events are intensifying with rising sea surface temperatures, yet the role of nutrient availability in influencing coral responses to thermal stress remains complex. Excessive nutrient enrichment often increases bleaching susceptibility, but moderate, balanced enrichment may provide physiological benefits. We tested this through a six-month in situ enrichment experiment on an oligotrophic reef in the Maldives during a mild bleaching event. Diffusers supplied either nitrogen-rich (High N; elevated N relative to P) or balanced nitrogen–phosphorus (High P; relative to typical Redfield N:P ratios) fertiliser to Pocillopora spp. colonies, and responses were assessed using bleaching surveys and stable isotope analyses (δ¹⁵N, δ¹³C, and C:N ratios) of host tissue and algal symbionts to monitor changes nitrogen assimilation strategies. Enriched colonies bleached significantly less than controls during peak heat stress. Isotopic signatures shifted toward fertiliser values, with δ¹⁵N reduced by up to 2 ‰ in symbionts and ∼ 1 ‰ in tissue, indicating assimilation of external nitrogen. Symbiont C:N ratios also declined under enrichment, consistent with reduced N limitation and altered metabolic balance within the symbiosis. Together, these results provide the first field evidence from the Indian Ocean that short-term nutrient enrichment in oligotrophic reef environments can reduce bleaching severity under mild heat stress by enhancing metabolic flexibility, i.e., the capacity of corals and their symbionts to adjust nutrient assimilation and internal resource use under stress. However, the long-term consequences of sustained or unbalanced nutrient exposure remain uncertain, highlighting the need for caution in management applications.

随着海洋表面温度的上升，珊瑚白化事件正在加剧，但营养物质的有效性在影响珊瑚对热应力的反应中的作用仍然很复杂。过度的营养物富集通常会增加漂白的易感性，但适度、均衡的富集可能会提供生理上的益处。在轻度白化事件期间，我们在马尔代夫的一个贫营养珊瑚礁上进行了为期六个月的原位富集实验，以此来验证这一点。扩散器向poillopora spp菌落提供富氮（高N，相对于P升高的N）或平衡氮磷（高P，相对于典型的Redfield N:P比率）肥料，并通过漂白调查和宿主组织和藻类共生体的稳定同位素分析（δ15N， δ13C和C:N比率）来评估响应，以监测氮同化策略的变化。在峰值热应激期间，富集菌落的白化程度明显低于对照组。同位素特征转向肥料值，共生体中的δ15N减少了2‰，组织中的δ15N减少了1‰，表明外来氮的同化。共生体C:N比值也随着富集而下降，这与共生体内氮限制降低和代谢平衡改变相一致。总之，这些结果提供了来自印度洋的第一个实地证据，证明在少营养珊瑚礁环境中短期的营养富集可以通过增强代谢灵活性（即珊瑚及其共生体在压力下调节营养同化和内部资源利用的能力）来减轻轻度热胁迫下的白化严重程度。然而，持续或不平衡的营养暴露的长期后果仍然不确定，强调在管理应用中需要谨慎。

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引用次数: 0

The characterization of pyroplastics on the Sea of Japan coastline 日本海沿岸热塑性塑料的表征

IF 5.8 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-20 DOI: 10.1016/j.marpolbul.2026.119309

Kaito Matsunaga, Takumi Sano, Edward G. Nagato

Recent reports have suggested the widespread distribution of a novel form of plastic waste on marine shorelines; plastics seemingly originating from the burning and melting of plastic waste. These plastics, termed pyroplastics, were collected in the intertidal zone of beaches on the Sea of Japan coastline and analyzed for their composition. Despite their unknown origins, these pyroplastics are a ubiquitous presence along the Sea of Japan coast. A total of 146 pyroplastics were found with the highest occurring at Koura, the enclosed bay site, with 2.1 pyroplastics/m2 and the lowest at Chirihama, the site furthest north, with 0.3 pyroplastics/m2. Among these were mixtures of plastic polymer types, which included the most commonly used plastics: polyethylene, polypropylene and polystyrene. Most samples did not show signs of colonization by marine organisms, suggesting a greater likelihood of being produced and transported locally. Still, there are various aspects to these novel plastic types that are unknown, specifically with respect to their toxicity and their propensity to fragment into microplastics.

最近的报告表明，海洋海岸线上广泛分布着一种新型塑料废物；塑料似乎源于塑料废物的燃烧和熔化。这些被称为热塑塑料的塑料是在日本海海岸线的潮间带海滩收集的，并对其成分进行了分析。尽管起源不明，但这些热塑塑料在日本海沿岸随处可见。共发现热塑体146个，其中封闭海湾的库拉（Koura）最高，为2.1个/m2，最北的奇里哈马（Chirihama）最低，为0.3个/m2。其中包括塑料聚合物类型的混合物，其中包括最常用的塑料：聚乙烯、聚丙烯和聚苯乙烯。大多数样品没有显示出海洋生物定居的迹象，这表明更有可能是在当地生产和运输的。尽管如此，这些新型塑料有很多方面是未知的，特别是它们的毒性和它们破碎成微塑料的倾向。

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引用次数: 0

Determining the contribution of temperate seaweed farming to local sedimentary carbon stocks and climate change mitigation 确定温带海藻养殖对当地沉积碳储量和减缓气候变化的贡献

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-20 DOI: 10.1016/j.marpolbul.2026.119283

Maxine C. Canvin , Nathan G. King , Pippa J. Moore , Dan A. Smale

Seaweed farming, often regarded as a low-impact aquaculture practice, may deliver ecosystem services like carbon sequestration. Yet, empirical evidence for its climate change mitigation potential is limited. Sediment cores were collected at increasing distances from a seaweed farm in southwest UK and analysed for carbon stocks, carbon sedimentation rates, potential carbon sources, and sediment characteristics. The upper 3 cm of sediment, linked to farming activity, held ~2 t C_org ha⁻¹ with sedimentation rates of 0.23 t C_org ha⁻¹ yr⁻¹. eDNA revealed low, inconsistent contributions of kelp and mussels, while seagrass, red algae, and likely phytoplankton, dominated. The sedimentary environment remained largely unchanged pre- and post-farm establishment or with increasing distance from the farm, highlighting the limited carbon sequestration potential at this scale. Future research should focus on identifying potential carbon sinks through hydrodynamic modelling and sediment analysis to inform the climate-conscious, sustainable industry expansion.

海藻养殖通常被认为是一种低影响的水产养殖方式，可以提供碳封存等生态系统服务。然而，其减缓气候变化潜力的经验证据有限。沉积物岩心是在离英国西南部海藻养殖场越来越远的地方收集的，并分析了碳储量、碳沉积速率、潜在碳源和沉积物特征。与农业活动有关的上部3厘米沉积物的沉积速率为0.23 t Corg ha - 1年- 1，沉积量为~2 t Corg ha - 1年- 1。eDNA显示，海带和贻贝的贡献低且不一致，而海草、红藻和可能的浮游植物占主导地位。在农场建立前后或随着距离农场的增加，沉积环境基本保持不变，突出了在这种规模下有限的碳固存潜力。未来的研究应侧重于通过水动力学建模和沉积物分析来确定潜在的碳汇，从而为具有气候意识的可持续工业扩张提供信息。

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引用次数: 0

Deciphering copper and zinc leaching from antifouling paints with different operating modes: flux determination and toxicity evidence 从不同操作模式的防污漆中破译铜和锌的浸出：通量测定和毒性证据

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-20 DOI: 10.1016/j.marpolbul.2026.119265

V. Lenoble , N. Layglon , C. Pages , S. D'Onofrio , B. Misson

Laboratory experiments were performed using 3 antifouling paints with different operating modes immersed in seawater for 7 days, to estimate copper and zinc fluxes and determine the scale of the related contamination. The toxicity of antifouling paints leachates was also assessed for natural bacterioplanktonic and phytoplanktonic communities. Given the increase in copper and zinc concentrations (4 to 1750-fold enrichment in dissolved Cu and to 7 to 200-fold enrichment in dissolved Zn), a systematic mortality upon phytoplankton was evidenced within 2 days of exposure to leachates produced from 1 h to 2 days of immersion, whatever the paint. This went oppositely with the environmental risks calculated according to European guidelines, demonstrating an acceptable risk for the environment. Considering that 1 h of leaching from a 7 cm² painted disk polluted 0.5 L of seawater with Cu in our experimental conditions whatever the paint used, we estimated that a painted ship hull of 15 m² can pollute more than 10 m³ of seawater within the same time. Leachates produced after only 20 min even yielded phytoplankton growth inhibition or mortality for insoluble and self-polishing paints, respectively, shortening the time needed for a freshly painted ship hull of 15 m² to pollute 10 m³. The bacterioplanktonic community appeared less sensitive than phytoplankton but demonstrated the same hierarchy: the highest toxicity was observed for the insoluble matrix and the lowest toxicity for the soluble one. This study therefore brings added value in terms of biocides flux determination, range of studied paints and concrete toxicity evaluation.

采用3种不同操作方式的防污涂料在海水中浸泡7天，进行室内实验，估算铜和锌的通量，确定相关污染的规模。还评估了防污涂料浸出液对天然浮游细菌和浮游植物群落的毒性。考虑到铜和锌浓度的增加（溶解铜富集4至1750倍，溶解锌富集7至200倍），浮游植物暴露于浸出液1小时至2天产生的系统死亡，无论油漆如何，在2天内就可以证明。这与根据欧洲准则计算的环境风险正好相反，表明环境风险是可接受的。考虑到在我们的实验条件下，无论使用何种油漆，从一个7cm2的涂漆盘浸出1小时就会污染0.5 L的海水，我们估计一个15m2的涂漆船体在相同的时间内会污染超过10m3的海水。20分钟后产生的渗滤液甚至对不溶性和自抛光涂料分别产生浮游植物生长抑制或死亡，缩短了15平方米新漆船体污染10立方米所需的时间。浮游细菌群落表现出比浮游植物更低的敏感性，但表现出相同的等级：毒性最高的是不溶性基质，毒性最低的是可溶基质。因此，本研究在杀菌剂通量测定、涂料研究范围及混凝土毒性评价等方面具有附加价值。

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引用次数: 0

A spectrally-derived method for detecting sea-water discoloration around submarine volcanoes in oligotrophic oceans by integrating Sentinel 2 A/B-MSI and Landsat 8/9-OLI data 基于Sentinel 2 A/B-MSI和Landsat 8/9-OLI数据的贫营养海洋海底火山周围海水变色光谱探测方法

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-20 DOI: 10.1016/j.marpolbul.2026.119266

Emanuele Ciancia , Francesco Marchese , Giuseppe Mazzeo , Simon Plank , Nicola Pergola

Shallow eruptions of submarine volcanoes can hamper navigation of ships and alter the biological response of marine ecosystems. Satellite remote sensing can provide timely and continuous information about volcanic activity around dangerous sites contributing to the assessment of pre-, syn- and post eruptive phenomena. Among these, sea-water discoloration is one of the most significant indicators of underwater volcanic activity as its accurate and timely detection may help in revealing possible precursor processes of submarine volcanic eruptions. In this framework, we proposed a novel spectrally-derived method to detect and map discolored plumes around submarine volcanoes in oligotrophic oceans by integrating Sentinel 2A/B-MSI and Landsat 8/9-OLI satellite data. The developed method, combining two discoloration algorithms, was tested around a representative test case, namely the Kavachi Volcano (Solomon Islands, Southwest Pacific Ocean), by using a yearly (2022) MSI-OLI integrated dataset. It exhibited satisfactory validation metrics thus recording overall accuracies (OAs) close to 90% for both the single and integrated (multi-sensor) configuration. Despite the omission errors ranging (OEs) from 18 to 20%, the very low (around 2%) commission (CEs) demonstrated its high level of reliability in mapping discolored waters of volcanic origin. Furthermore, the proven exportability of this method to the Kaitoku Volcano (Japan, Western Pacific Ocean) confirms its capability in detecting underwater volcanic activities regardless of different features of sea-water discoloration (e.g., chemical composition). This method could represent an automated early warning tool to support the operational monitoring of submarine volcanoes arranged by maritime surveillance systems.

海底火山的浅层喷发会妨碍船舶航行，改变海洋生态系统的生物反应。卫星遥感可以提供关于危险地点周围火山活动的及时和连续的信息，有助于评估喷发前、喷发中和喷发后的现象。其中，海水变色是海底火山活动最重要的指标之一，其准确及时的检测有助于揭示海底火山爆发可能的前兆过程。在此框架下，我们提出了一种新的光谱衍生方法，通过整合Sentinel 2A/B-MSI和Landsat 8/9-OLI卫星数据，探测和绘制贫营养海洋海底火山周围变色羽流。所开发的方法结合了两种变色算法，通过使用年度（2022年）MSI-OLI集成数据集，围绕具有代表性的测试案例，即Kavachi火山（西南太平洋所罗门群岛）进行了测试。它展示了令人满意的验证指标，因此记录了接近90%的单个和集成（多传感器）配置的总体精度（oa）。尽管遗漏误差范围从18%到20%不等，但非常低（约2%）的委托（ce）表明其在绘制火山成因变色水域时具有很高的可靠性。此外，这种方法已被证明可出口到海德火山（日本，西太平洋），证实了它在探测水下火山活动方面的能力，而不考虑海水变色的不同特征（例如化学成分）。这种方法可以作为一种自动预警工具，支持由海上监视系统安排的海底火山的操作监测。

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引用次数: 0

Prevention and control strategies for non-regulated industrial microplastic spills 不受管制的工业微塑料泄漏的预防和控制策略

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-20 DOI: 10.1016/j.marpolbul.2026.119271

Amaia Mendoza , Ander García-Noblia , Cristina Peña-Rodríguez

Microplastics caused by industrial activity are still at an early stage of research and, in general, there is a significant lack of knowledge about the specific industries that contribute to microplastic pollution. In fact, studies on marine plastics and microplastics do not usually report their potential industrial origin, due to the difficulty of distinguishing them. However, in some cases it is possible to distinguish the industrial origin of primary microplastics, such as pellets used by the plastic industry. Pellets constitute a major category of microplastics detected along marine coastlines, primarily resulting from losses during handling and transportation. Although the European Commission recently agreed a regulation on unintentional pellet leakage, current industrial discharge regulations do not include specific controls for microplastics, since in addition, there are still no standardised procedures for the analytical determination of microplastics in wastewater samples. This study aims to identify standard parameters currently included in industrial discharge regulations that could serve as indicators of pellet-type microplastic spills from the plastics industry under hypothetical stormwater discharge monitoring. The suitability of total suspended solids and volatile suspended solids parameters is evaluated and verified. Thus, monitoring these parameters at discharge control points within stormwater networks of the plastics industry represents a technically, economically, and environmentally advantageous strategy for preventing pellet discharges. Finally, additional measures for the control and containment of microplastic spills from industry are also proposed.

工业活动造成的微塑料仍处于研究的早期阶段，总的来说，人们对造成微塑料污染的具体行业严重缺乏了解。事实上，关于海洋塑料和微塑料的研究通常不会报告它们潜在的工业来源，因为很难区分它们。然而，在某些情况下，可以区分初级微塑料的工业来源，例如塑料工业使用的颗粒。颗粒是沿海洋海岸线检测到的微塑料的主要类别，主要是由于处理和运输过程中的损失造成的。尽管欧盟委员会最近同意了一项关于无意颗粒泄漏的法规，但目前的工业排放法规并没有包括对微塑料的具体控制，因为此外，对废水样品中微塑料的分析测定仍然没有标准化的程序。本研究旨在确定目前工业排放法规中包含的标准参数，这些参数可以在假设的雨水排放监测下作为塑料工业颗粒型微塑料泄漏的指标。评价并验证了总悬浮物和挥发性悬浮物参数的适用性。因此，在塑料工业的雨水网络的排放控制点监测这些参数代表了防止颗粒排放的技术，经济和环境上有利的策略。最后，还提出了控制和遏制工业微塑料泄漏的其他措施。

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引用次数: 0

Multi-omics reveal the prevalence of Thaumarchaeota and their biogeochemical roles in coastal low oxygen zones 多组学揭示了thumarchaeota在沿海低氧带的分布及其生物地球化学作用

IF 4.9 3区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Marine pollution bulletin

Pub Date : 2026-01-19 DOI: 10.1016/j.marpolbul.2026.119293

Yu Han , Airui Wang , Zhijie Zhang , Le Liu , Quanrui Chen , Wei Fan , Ehui Tan , Kai Tang

The intensification of coastal hypoxia under anthropogenic eutrophication and climate change necessitates understanding microbial adaptive mechanisms. However, the composition of microbial communities and their biogeochemical roles in response to oxygen gradients remain poorly understood. Here, we employed ‌integrated multi-omics‌ approaches to analyze microbial communities and their biogeochemical functions across oxic to low oxygen gradients off the Yangtze River Estuary in East China Sea. Results revealed that surface oxic waters hosted phytoplankton (Synechococcus) and opportunistic bacteria (Flavobacteriia, Pelagibacterales), while bottom layers enriched chemolithoautotrophs (Thaumarchaeota, Nitrospina) and facultative anaerobes (Planctomycetes, Marine Group II), with sediment resuspension further amplified particle-attached taxa. Meanwhile, a remarkable shift in microbial nitrogen metabolism was observed between oxic and low oxygen waters, with dissolved nitrogen assimilation dominated in oxic waters. Despite genomic potential for complete nitrogen reduction in low oxygen waters, our metaproteomics revealed only a significant expression of nitrate reductases. This decoupling between genomic potential and proteomic expression implies that ambient oxygen levels remain above thresholds for full pathway activation, showcasing microbial metabolic plasticity. Both metagenomic and metaproteomic have confirmed that Thaumarchaeota, particularly the genus Nitrosopumilus, emerged as keystone taxa, contributing to nitrification and dark carbon fixation, thereby coupling nitrogen‑carbon biogeochemical cycling in coastal hypoxic zones. These findings highlight redox-driven microbial niche differentiation and metabolic adaptation, providing predictive insights into biogeochemical feedbacks under expanding coastal deoxygenation.

在人为富营养化和气候变化的双重影响下，海岸带缺氧的加剧需要了解微生物的适应机制。然而，微生物群落的组成及其在氧梯度响应中的生物地球化学作用仍然知之甚少。本文采用综合多组学方法对东海长江口微生物群落及其生物地球化学功能进行了分析。结果表明，表层含氧水体主要是浮游植物（聚藻球菌）和条件细菌（黄杆菌属、Pelagibacterales）的栖息地，而底层则主要是化能石自养生物（Thaumarchaeota、Nitrospina）和兼性厌氧菌（plantomycetes, Marine Group II）的栖息地，沉积物再悬浮进一步扩大了颗粒附着类群。同时，微生物氮代谢在含氧水体和低氧水体之间发生了显著的变化，在含氧水体中以溶解氮同化为主。尽管基因组在低氧水体中具有完全氮还原的潜力，但我们的宏蛋白质组学只显示硝酸盐还原酶的显著表达。基因组潜力和蛋白质组表达之间的这种解耦意味着环境氧水平仍然高于全途径激活的阈值，显示了微生物代谢的可塑性。元基因组学和元蛋白质组学均证实，Thaumarchaeota，特别是Nitrosopumilus属，是沿海缺氧带硝化作用和暗碳固定作用的关键类群，从而耦合了氮-碳生物地球化学循环。这些发现突出了氧化还原驱动的微生物生态位分化和代谢适应，为扩大沿海脱氧作用下的生物地球化学反馈提供了预测性见解。

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