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Impact of tropical cyclones on the suspended sediment transport in the Bohai Sea since the 21st century 21世纪以来热带气旋对渤海悬沙输运的影响
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118383
Xingmin Liu , Lulu Qiao , Dehai Song , Xiaoxia Yu , Yue Yu , Yi Zhong , Hongbing Miao
{"title":"Impact of tropical cyclones on the suspended sediment transport in the Bohai Sea since the 21st century","authors":"Xingmin Liu ,&nbsp;Lulu Qiao ,&nbsp;Dehai Song ,&nbsp;Xiaoxia Yu ,&nbsp;Yue Yu ,&nbsp;Yi Zhong ,&nbsp;Hongbing Miao","doi":"10.1016/j.marpolbul.2025.118383","DOIUrl":"10.1016/j.marpolbul.2025.118383","url":null,"abstract":"<div><div>Under the background of global climate warming, the impact of tropical cyclones (TCs) on mid-latitude semi-enclosed bays will be enhanced. A hydrodynamics-sediment model was used to study the impact of TCs on sediment transport in the Bohai Sea during the 21st century, further revealing the mechanism of TCs influence on sediment dynamic processes in semi-enclosed bays. During the 21st century, a total of 10 TCs have passed through the Bohai Sea, with the total suspended sediment flux (SSF) output from the Bohai Sea reaching 14.34 Mt. During TC events in the Bohai Sea, the Bohai Bay was the main erosion zone, and resuspended sediments were transported downwind to Laizhou Bay, which was contrary to the normal sediment transport track in the Bohai Sea during the summer. The increase in wave-induced shear stress and the disruption of vertical stratification were the primary causes of the increase in SSF. Additionally, numerical experiments indicate that the TC tracks passing zonally through the central Bohai Sea have the greatest impact. This study helps to deepen the understanding of sediment dynamic processes in bays during TCs, provides useful information for policies and coastal development, and thereby reduces the risks of TCs to coastal communities under future climate change scenarios.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118383"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rainwater input modulates marine primary production across varied embayment nutrient levels 雨水输入调节不同河口营养水平的海洋初级生产
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118431
Yunchao Wu , Xia Zhang , Songlin Liu , Zhijian Jiang , Xiaoping Huang
{"title":"Rainwater input modulates marine primary production across varied embayment nutrient levels","authors":"Yunchao Wu ,&nbsp;Xia Zhang ,&nbsp;Songlin Liu ,&nbsp;Zhijian Jiang ,&nbsp;Xiaoping Huang","doi":"10.1016/j.marpolbul.2025.118431","DOIUrl":"10.1016/j.marpolbul.2025.118431","url":null,"abstract":"<div><div>Rainwater alters seawater composition, impacting marine phytoplankton and microbes, but research on its effects under different nutrient conditions is limited. In this study, two separate shipboard incorporation incubations (NaH<sup>14</sup>CO<sub>3</sub> for primary production (PP) and <sup>3</sup>H-thymidine for bacterial production (BP), respectively) were used to investigate the response of marine PP and BP to varying intensities of rainwater input in Daya Bay, a distinct embayment influenced by severe anthropogenic activities. The results showed that rainwater input could increase PP (9.5 % and 47.0 % for 2.5 % and 5 % rainwater addition groups), especially in areas under high nutrient loading areas. This effect is especially conspicuous for nano-diatoms and dinoflagellates species. Furthermore, the role of heavy rainfall (5 % rainwater addition) in augmenting nutrient supply bolsters primary productivity, particularly for the dominant species such as <em>Chaetoceros. sp</em>, <em>Pseudo-nitzschia</em>, and <em>Thalassionema nitzschioides</em>. Meanwhile, rainwater addition had a positive effect on BP, but inhibited bacterial respiration (BR) in the highest nutrient level. In contrast, rainwater addition promoted BR in mediate and less disturbed areas. The influence of rainwater input on bacterial growth efficiency (BGE) was modest, yet a discernible inhibitory effect was observed at the bay's mouth, where the seawater exhibits the lowest disturbance. While rainwater addition impeded the proliferation of autotrophic bacteria in the high nutrient level area, its effect was negligible at the low nutrient loading area. This study provides a collaboration or competition insight into the effects of atmospheric nutrient deposition on marine primary production processes in coastal areas affected by distinct levels of human activities.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118431"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
2050 UK shipping emissions of NOx, SOx, PM10, and PM2.5: What are the determining factors, is the zero pollution by 2050 feasible, and will the reduction rate for these pollutants be at the same pace? 2050年英国船舶NOx, SOx, PM10和PM2.5的排放:决定因素是什么,到2050年实现零污染是否可行,这些污染物的减少速度是否相同?
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118371
Udeme John Dickson , Chengou Huang
{"title":"2050 UK shipping emissions of NOx, SOx, PM10, and PM2.5: What are the determining factors, is the zero pollution by 2050 feasible, and will the reduction rate for these pollutants be at the same pace?","authors":"Udeme John Dickson ,&nbsp;Chengou Huang","doi":"10.1016/j.marpolbul.2025.118371","DOIUrl":"10.1016/j.marpolbul.2025.118371","url":null,"abstract":"<div><div>This study investigates 2050 UK shipping emissions for NOx, SOx, PM<sub>10</sub> &amp; PM<sub>2.5</sub>, to assess the determining factors, feasibility of zero pollution, and whether the emission reduction will progress at the same pace. The 2016 UK shipping emissions was used as the baseline scenario, with 2025 UK shipping energy demand expectedly the same as that of 2016. Three fuel-mix-scenarios were analysed: one dominated by e-fuels (Scenario 1), one dominated by biofuels (Scenario 2), and a central case (Scenario 3). By applying the pollutants' emission factors to these scenarios, the range of the projected 2050 UK total shipping emissions in kilotons were NOx (307-942), SOx (4-7), and 1-8 for both PM10 and PM2.5. Compared to the 2016 scenario, the total emission reduction rates for NOx, SOx, PM<sub>10</sub> and PM<sub>2.5</sub>, respectively were ‐27, 95, 99, and 99 % for Scenario 1; 25, 96, 87, and 87 % for Scenario 2; and 59, 97, 52, and 52 for Scenario 3. These findings revealed that achieving zero pollution in the sector for these pollutants by 2050 is not feasible, their emission reduction rates will not progress at the same pace, and that certain fuel mix which favour carbon emission reduction, will invariably increase NOx emission. Further analysis revealed that two key factors—fuel mix type and energy demand—will significantly influence these emissions. Consequently, new fuel scenarios incorporating more of hydrogen fuel are proposed, yielding promising results. Therefore, increased proportion of hydrogen fuel, coupled with technologies for individual pollutant reduction will help address these emissions.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118371"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling the potential source routes of marine macroplastics on a beach adjacent to the Patos lagoon estuary, South Brazil 模拟巴西南部帕托斯泻湖河口附近海滩上海洋宏观塑料的潜在来源路线
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118349
Ana C. Soares , Kristhal Doto , Pablo Silva , Isabel Jalón-Rojas , Rémi Bouyssou , Grasiela L.L. Pinho , Elisa Fernandes
{"title":"Modeling the potential source routes of marine macroplastics on a beach adjacent to the Patos lagoon estuary, South Brazil","authors":"Ana C. Soares ,&nbsp;Kristhal Doto ,&nbsp;Pablo Silva ,&nbsp;Isabel Jalón-Rojas ,&nbsp;Rémi Bouyssou ,&nbsp;Grasiela L.L. Pinho ,&nbsp;Elisa Fernandes","doi":"10.1016/j.marpolbul.2025.118349","DOIUrl":"10.1016/j.marpolbul.2025.118349","url":null,"abstract":"<div><div>Cassino Beach, on the southernmost coast of Brazil, is especially vulnerable to plastic pollution due to its 220 km-long coastline and proximity to the Patos Lagoon Estuary, which is influenced by urbanization, industrial activities, and intense coastal fishing. This study investigates the aquatic origin (lagoon or ocean) of stranded macroplastics during the summer and winter of 2016 at two sites: one located 3–5 km from the estuary mouth and another approximately 40 km away. A backward particle tracking approach was applied, combining the TELEMAC-3D hydrodynamic model with the TrackMPD model. Model validation using a buoy experiment showed a maximum difference of &lt;500 m between real and virtual particle trajectories. A total of 100 virtual particles (0.8 m LDPE sheets, ρ = 0.94 g·cm<sup>−3</sup>) were released per site and season. At the near-estuary site (S1), most particles (75 % in summer, 68 % in winter) originated from the central region of Patos Lagoon, while an additional 6 % (summer) to 25 % (winter) came from the São Gonçalo Channel. At the remote site (S4), particles mainly originated from marine regions: 98 % (winter) and 43 % (summer: 30 % SW + 13 % NE coastal domain) Simulated transport times ranged from 4.7 to 83 days, with shorter durations during winter due to stronger coastal currents. These results highlight the dominant role of estuarine outflow in transporting macroplastics to areas near the Patos Lagoon mouth, whereas remote areas are influenced by long-distance marine transport, particularly from fishing zones. The integration of numerical modeling with field data is the main contribution of this study to improve our understanding of debris sources and support more effective management strategies.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118349"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-scenario modeling of the Ulva growth supports risk management for oyster farming on a coastal flat in western central Taiwan Ulva生长的多情景模型支持台湾中西部沿海平原牡蛎养殖的风险管理
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118402
Tien-Hsuan Lu , Yu-Wen Tsai , Pei-Yu Yang
{"title":"Multi-scenario modeling of the Ulva growth supports risk management for oyster farming on a coastal flat in western central Taiwan","authors":"Tien-Hsuan Lu ,&nbsp;Yu-Wen Tsai ,&nbsp;Pei-Yu Yang","doi":"10.1016/j.marpolbul.2025.118402","DOIUrl":"10.1016/j.marpolbul.2025.118402","url":null,"abstract":"<div><div>An outbreak of macroalgae <em>Ulva</em> caused massive oyster production losses in the coastal wetlands of western central Taiwan. This event highlighted a critical gap in real-time indicators and response strategies to immediately or preparedly mitigate such ecological disturbances. Therefore, we aim to integrate risk assessment with mathematical modeling to quantify the impacts of nutrients discharges, changes in environmental factors, and potential interventions on <em>Ulva</em> coverage-related mortalities of cultured oysters. We monitored water quality in the wetland and nearby drainages to provide a basis for simulating the macroalgae biomass under varying environmental conditions. Effect analysis was conducted to support assessing the risk quotients for the mortality of cultured oyster covered by <em>Ulva</em>. Higher concentrations of ammonium nitrogen, nitrate nitrogen, and phosphates in the water of oyster farms and drainages were detected during spring and summer. Simulation results showed that if the proportion of <em>Ulva</em> trapped around oyster racks increased from 0.7 to 0.9, there would be significant risks when <em>Ulva</em> biomass in the external system attains 8 and 2 g dry weight (gDW) L<sup>−1</sup>, respectively. We also found that <em>Ulva</em> transported from external systems and the likelihood of <em>Ulva</em> trapped around oyster racks were more sensitive to the risks than ammonium nitrogen, nitrate nitrogen, and changes in surface seawater temperature. Overall, our risk-based approach not only could identify crucial factors on the mortality risk of cultured oysters due to <em>Ulva</em> coverage, but also could inform marine environmental management to initiate early warning strategies and adopt effective interventions to sustain marine aquaculture.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118402"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to "Effects of artificial light at night on the early benthic stages of the prominent sea urchin Loxechinus albus" [Mar. Pollut. Bull. 219 (2025) 118289 (1-11)]. “夜间人造光对著名海胆(Loxechinus albus)早期底栖阶段的影响”的勘误表[3月污染。牛。219(2025)118289(1-11)]。
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118436
Patricio H Manríquez, Diego Quintanilla-Ahumada, Claudio P González, Paolo Domenici, Jorge Bravo, Andrés Camaño, José Pulgar, Pedro A Quijón, Cristian Duarte
{"title":"Corrigendum to \"Effects of artificial light at night on the early benthic stages of the prominent sea urchin Loxechinus albus\" [Mar. Pollut. Bull. 219 (2025) 118289 (1-11)].","authors":"Patricio H Manríquez, Diego Quintanilla-Ahumada, Claudio P González, Paolo Domenici, Jorge Bravo, Andrés Camaño, José Pulgar, Pedro A Quijón, Cristian Duarte","doi":"10.1016/j.marpolbul.2025.118436","DOIUrl":"https://doi.org/10.1016/j.marpolbul.2025.118436","url":null,"abstract":"","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":" ","pages":"118436"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144618740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Using citizen science to inventory and map abandoned, lost, or otherwise discarded fishing gear (ALDFG) 使用公民科学来清点和绘制被遗弃、丢失或以其他方式丢弃的渔具(ALDFG)
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118418
Marie Morfin , Sonia Méhault , Laëtitia Miquerol , Quentin Coupa Dufau , Dorothée Kopp
{"title":"Using citizen science to inventory and map abandoned, lost, or otherwise discarded fishing gear (ALDFG)","authors":"Marie Morfin ,&nbsp;Sonia Méhault ,&nbsp;Laëtitia Miquerol ,&nbsp;Quentin Coupa Dufau ,&nbsp;Dorothée Kopp","doi":"10.1016/j.marpolbul.2025.118418","DOIUrl":"10.1016/j.marpolbul.2025.118418","url":null,"abstract":"<div><div>A considerable proportion of marine plastic pollution consists of abandoned, lost, or otherwise discarded fishing gear (ALDFG). Whether still intact or break down into fragments, ALDFG is a widespread, enduring problem, and as such, it represents an ideal case for the use of citizen science. The Fish&amp;Click program proposes a mobile application and website to enable non-specialist observers, such as walkers, divers, or sailors, to record their sightings of ALDFG. The simple interface allows the user to characterize found gear without any expert knowledge, and an analysis of these data can shed light on the magnitude and spatio-temporal composition of the ALDFG phenomenon. This report presents the results and feedback from the first two years of Fish&amp;Click, from May 2020 to June 2022, in the north of the Bay of Biscay, Celtic Sea, and English Channel. In addition to a database cleaning procedure, we defined an ad hoc methodology for analyzing these non-standardized data. Using this, we found that the types and quantities of found gear differ between sea and shore locations and were also different from one region to another. We discuss the pros and cons of this citizen-science program, as well as the potential for improvements that might help to mitigate pollution by ALDFG.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118418"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Source apportionment and ecological risk of heavy metals in sediments from estuaries and bays in China: insights into cross-regional transport 中国河口和海湾沉积物中重金属的来源分配和生态风险:对跨区域运输的见解
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118420
Haiyang Liu , Yiqing Chen , Haoqian Shi , Xudong Huang , Youngchul Kim , Wanli Hou , Jianghua Yu
{"title":"Source apportionment and ecological risk of heavy metals in sediments from estuaries and bays in China: insights into cross-regional transport","authors":"Haiyang Liu ,&nbsp;Yiqing Chen ,&nbsp;Haoqian Shi ,&nbsp;Xudong Huang ,&nbsp;Youngchul Kim ,&nbsp;Wanli Hou ,&nbsp;Jianghua Yu","doi":"10.1016/j.marpolbul.2025.118420","DOIUrl":"10.1016/j.marpolbul.2025.118420","url":null,"abstract":"<div><div>Heavy metals (HMs), recognized as global pollutants, pose a serious threat to ecological security and human health. HMs sources and pollution characteristics exhibit considerable complexity under varying climatic conditions and regional environmental contexts. This study investigates the migration patterns, sources, and spatial distribution of HMs in sediments from representative estuaries and bays in China between 2017 and 2020. The results show regional contamination levels vary due to runoff and land-based pollutants. According to the geo-accumulation index (Igeo), Cd exhibited the most severe contamination, particularly in the Pearl River Estuary, the Hangzhou Bay, and the Yangtze River Estuary (moderately to highly polluted). Positive Matrix Factorization (PMF) showed industrial sources contributed most to HMs (46.7 %), followed by natural (30.7 %), agricultural (12.3 %), and shipping sources (10.3 %). Principal Coordinates Analysis (PCoA) and spatial distribution patterns further demonstrated a more pronounced distance-decay relationship during the rainy season. Mass load estimations showed that the Yangtze River Estuary (215,111.2 t) and the Pearl River Estuary (551,271.3 t) had the highest pollutant loads, suggesting their potential role as secondary sources of pollution for adjacent regions. This study offers a comprehensive view of HMs contamination in sediments from major Chinese estuaries and bays, supporting environmental protection and risk warning efforts.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118420"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Differential response patterns of bacterial communities in seawater and sediments to the Chaetomorpha valida bloom in sea cucumber Apostichopus japonicus aquaculture ponds 海水和沉积物中细菌群落对日本刺参养殖池水华的差异响应模式
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118359
Hongxia Zhang , Kexin Xu , Ronglian Xing , Linqian Wang , Renyu Liu , Xin Wang , Lihong Chen , Rui Li , Zhen Yu , Xuebin Cao , Cao Cheng , Qun Su
{"title":"Differential response patterns of bacterial communities in seawater and sediments to the Chaetomorpha valida bloom in sea cucumber Apostichopus japonicus aquaculture ponds","authors":"Hongxia Zhang ,&nbsp;Kexin Xu ,&nbsp;Ronglian Xing ,&nbsp;Linqian Wang ,&nbsp;Renyu Liu ,&nbsp;Xin Wang ,&nbsp;Lihong Chen ,&nbsp;Rui Li ,&nbsp;Zhen Yu ,&nbsp;Xuebin Cao ,&nbsp;Cao Cheng ,&nbsp;Qun Su","doi":"10.1016/j.marpolbul.2025.118359","DOIUrl":"10.1016/j.marpolbul.2025.118359","url":null,"abstract":"<div><div>The microbiota play a critical role in the health of the aquaculture pond ecosystem. Green tide have been found to affect the microbial community in the marine environments, but effects of <em>Chaetomorpha valida</em> bloom on the microbial composition in the aquaculture ponds related to the marine economic species have been rarely investigated. To address this shortcoming, we provided baseline information on the bacterial composition and diversity in <em>C. valida</em> bloom areas and non-bloom areas of <em>Apostichopus japonicus</em> aquaculture ponds in four seasons. High-throughput 16S rRNA sequencing revealed that <em>C. valida</em> bloom significantly changed the bacterial community composition in seawater and bacterial richness in sediment, but has minor effects on sediment bacterial community structure. The co-occurrence network analysis indicated that the bloom of <em>C. valida</em> intensified interspecific competition among sedimentary bacteria, thereby enhancing their stability. In contrast, it promoted symbiotic relationships among bacteria in seawater. Importantly, there were higher proportions of potential pathogens in seawater from <em>C. valida</em> bloom areas compared to non-bloom areas, suggesting a higher ecological risk associated with the <em>C. valida</em> blooms. This study offers novel perspectives on how bacterial communities in sediments and seawater differently respond to <em>C. valida</em> bloom in aquaculture systems.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118359"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stage-dependent life-history, physiological, and behavioral responses to low pH in an estuarine crab 河口蟹对低pH值的阶段依赖生活史、生理和行为反应
IF 5.3 3区 环境科学与生态学
Marine pollution bulletin Pub Date : 2025-07-10 DOI: 10.1016/j.marpolbul.2025.118408
M. Pérez García , T.A. Luppi , J.D. Nuñez , N. Servetto , E.H. Ocampo
{"title":"Stage-dependent life-history, physiological, and behavioral responses to low pH in an estuarine crab","authors":"M. Pérez García ,&nbsp;T.A. Luppi ,&nbsp;J.D. Nuñez ,&nbsp;N. Servetto ,&nbsp;E.H. Ocampo","doi":"10.1016/j.marpolbul.2025.118408","DOIUrl":"10.1016/j.marpolbul.2025.118408","url":null,"abstract":"<div><div>Early stages of marine invertebrates are vulnerable to ocean acidification. We investigated low pH effects on larval stages of the crab <em>Neohelice granulata</em>. We hypothesized that Zoea I, adapted to fluctuating environments, would show greater resilience than Zoea II and III, which develop in stable nearshore areas. We assessed pH 8 -control-, pH 7.5, and pH 6.9 effects on intermolt duration, mortality, oxygen consumption, and swimming behavior. Zoea I tolerated low pH with no changes in development or mortality, though oxygen consumption decreased at pH 6.9. In contrast, Zoea II and III showed delayed development, higher mortality, and reduced oxygen consumption at pH 6.9. While Zoea I showed no changes in swimming, Zoea II and III exhibited reduced swimming velocity and distance traveled under acidified conditions. These findings show that Zoea II and III are more sensitive to low pH, while Zoea I is more resilient.</div></div>","PeriodicalId":18215,"journal":{"name":"Marine pollution bulletin","volume":"220 ","pages":"Article 118408"},"PeriodicalIF":5.3,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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