Regional Studies in Marine Science最新文献_第5页

Macrobenthos communities and ecological quality assessment in the subtropical estuary: Insights for management of marine protected area 亚热带河口大型底栖动物群落与生态质量评价：对海洋保护区管理的启示

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-07 DOI: 10.1016/j.rsma.2025.104331

Jian-Yu Dong , Kunlong Qiu , Hongbin Zeng , Gorka Bidegain , Gang Hou , Ning Chen , Xuefeng Wang

{"title":"Macrobenthos communities and ecological quality assessment in the subtropical estuary: Insights for management of marine protected area","authors":"Jian-Yu Dong , Kunlong Qiu , Hongbin Zeng , Gorka Bidegain , Gang Hou , Ning Chen , Xuefeng Wang","doi":"10.1016/j.rsma.2025.104331","DOIUrl":"10.1016/j.rsma.2025.104331","url":null,"abstract":"<div><div>The marine protected area in the Jianjiang River Estuary was established in 2011; however, subsequent research on the ecological health of the estuarine biological community has been lacking, making it difficult to scientifically evaluate or inform the management of the reserve. In this study, we assessed the composition and diversity of macrobenthic communities at ten different sites in the Jianjiang River estuary reserve in both Spring and Autumn and used three biotic indices to evaluate the ecological quality status (EcoQs) across the reserve. We identified 58 macrobenthic taxa, of which the largest proportion were Mollusca (48.28 %), followed by Annelida (27.59 %) and Arthropoda (18.97 %). Macrobenthic abundance and biomass varied among sites and seasons, and community composition was driven by different environmental variables in Spring and Autumn. With respect to our three indices of ecological quality, abundance-biomass comparison (ABC) curve analysis and the associated <em>W</em>-statistics indicated that macrobenthic communities in the reserve were undisturbed in the Spring but disturbed in Autumn. The AZTI marine biotic index (AMBI) indicated that most sites have high or good EcoQs, with higher EcoQs in the Spring, and the multivariate AMBI (M-AMBI) index similarly suggested that the average EcoQs were good in Spring but only moderate in Autumn. We suspect that the consistently lower EcoQs in Autumn across all sites were largely due to a 1-in-10-year flood discharge that occurred during our sampling year and disturbed sites near the river outflow. Overall, our results point towards specific, scientifically informed suggestions for future management of the Jianjiang River estuary reserve.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104331"},"PeriodicalIF":2.1,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The robotic revolution in biofouling management: Disruption, adaptation, and the future of antifouling industries 机器人在生物污染管理中的革命：破坏、适应和防污工业的未来

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-05 DOI: 10.1016/j.rsma.2025.104328

Heting Hong , Chengyi Luo , Guoping Hong

引用次数: 0

Historical and future projected regional sea levels in the Pearl River Delta, South China 华南珠江三角洲区域海平面的历史和未来预测

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-05 DOI: 10.1016/j.rsma.2025.104324

Zhijun Yao , Guanjun Li , Shichao Yang , Guoru Huang

{"title":"Historical and future projected regional sea levels in the Pearl River Delta, South China","authors":"Zhijun Yao , Guanjun Li , Shichao Yang , Guoru Huang","doi":"10.1016/j.rsma.2025.104324","DOIUrl":"10.1016/j.rsma.2025.104324","url":null,"abstract":"<div><div>Due to the particularity of its location, coastal areas are not only affected by climate change and urbanization, but also affected by the downstream boundary jacking caused by sea level rise, which further expands the flood disaster. Therefore, it is necessary to analyze historical sea levels and predict future regional sea levels in order to prevent or mitigate flood disasters in coastal areas. This study used tidal station data from the Pearl River Delta (PRD) and mathematical statistics to analyze historical sea levels and establish a model to predict future sea level rise in the PRD. The results showed a significant increase in sea levels in the PRD, but the rate of increase was lower in the Pearl River estuary than at other stations. A substantial change in the sea level trend occurred in the 1990s due to urbanization in the PRD. The rate of sea level change was, on average, 3.4 cm/10a higher during the urbanization period than during the entire study period. The periods of sea levels change in the PRD were 4–7, 10–15, 18, and 22–29 years. Sea level fluctuations were predicted to be higher in the future. Different global climate models provided different results of sea level rise, but the values increased with an increase in the scenario level. The sea level will rise by 22.4 (24.0) cm, 31.0 (47.4) cm, 39.1 (73.5) cm, and 45.8 (94.4) cm in the near (long) future under the SSP126, SSP245, SSP370, and SSP585 scenarios, respectively.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104324"},"PeriodicalIF":2.1,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144587869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Presence, risk assessment, and priority pollutants determination of antifouling paint biocides in Istanbul Beylikduzu Marina, Sea of Marmara, Türkiye 土耳其伊斯坦布尔贝利克杜祖码头防污涂料杀菌剂的存在、风险评估及优先污染物测定

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-04 DOI: 10.1016/j.rsma.2025.104326

Nagihan Ersoy Korkmaz , Abdullah Aksu , Tuğba Tomalak , Başak Savun , Timuçin Kapudan , Cem Gazi̇oğlu , Nuray Çağlar Balkıs

{"title":"Presence, risk assessment, and priority pollutants determination of antifouling paint biocides in Istanbul Beylikduzu Marina, Sea of Marmara, Türkiye","authors":"Nagihan Ersoy Korkmaz , Abdullah Aksu , Tuğba Tomalak , Başak Savun , Timuçin Kapudan , Cem Gazi̇oğlu , Nuray Çağlar Balkıs","doi":"10.1016/j.rsma.2025.104326","DOIUrl":"10.1016/j.rsma.2025.104326","url":null,"abstract":"<div><div>Antifouling chemicals are mainly used on water-contact surfaces to prevent biofouling formation on ships or submarine hulls. This study focuses on examining the presence of antifouling paint biocides (Irgarol 1051, chlorothalonil, and dichlofluanid) in the seawater of Beylikduzu Marina, Istanbul, and includes an assessment of their environmental risks. Surface seawater samples were collected from six stations around the marina in the spring, summer, autumn, and winter of 2023. The collected water samples were processed using both liquid-liquid extraction and stir bar sorptive extraction methods, and analyses were carried out using gas chromatography-mass spectrometry. Wilcoxon and Bland-Altman tests confirmed the higher efficiency of stir bar sorptive extraction. The highest concentrations of chlorothalonil, dichlofluanid, and Irgarol 1051 were determined as <MDL, 0.16 µg/L, and 0.24 µg/L, respectively, by liquid-liquid extraction method, while the highest concentrations of these compounds were measured as 0.5 µg/L, 0.81 µg/L, and 1.57 µg/L, respectively, by magnetic stir bar extraction method. One-way analysis of variance (ANOVA) showed no significant seasonal variation in biocide concentrations, while regression analysis suggested a limited influence of water quality parameters, particularly for Irgarol 1051. Hierarchical cluster analysis grouped stations based on biocide concentrations, linking M2-M3 to boat mooring, M5-M4 to restricted circulation, M1 to maintenance, and M6 to external influences, emphasizing the role of anthropogenic and hydrodynamic factors in biocide distribution. The risk assessment indicates that the examined antifouling biocides may pose a threat to aquatic life. Irgarol 1051, in particular, requires attention due to its significant risk quotients.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104326"},"PeriodicalIF":2.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

An overview on microplastic pollution in the Black Sea coastal waters of Türkiye 黑海近岸水域微塑料污染研究综述

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-04 DOI: 10.1016/j.rsma.2025.104319

Özlem TUNÇ DEDE , Yalçın TEPE

{"title":"An overview on microplastic pollution in the Black Sea coastal waters of Türkiye","authors":"Özlem TUNÇ DEDE , Yalçın TEPE","doi":"10.1016/j.rsma.2025.104319","DOIUrl":"10.1016/j.rsma.2025.104319","url":null,"abstract":"<div><div>Besides its strategic importance, the Black Sea is a unique basin in terms of biodiversity, fishing and natural resources for the countries on its coasts such as Bulgaria, Georgia, Moldova, Romania, Russia and Ukraine, as well as for Turkiye. The total coastline of the Black Sea is 4.869 km, of which 3.456 km are the coasts of Ukraine (1.756 km, 36.1 %) and Turkey (1.700 km, 34.9 %). This unique marine basin is under intense pollution threat due to the discharge of freshwater, sediment and nutrients from the rivers of all surrounding countries, as well as numerous pollutants, including microplastics. Microplastics, which are among the emerging pollutants originating from terrestrial runoff, industrial discharge and marine activities, adversely affect the aquatic ecosystem and pose a risk to public health. Ingestion by marine organisms can lead to bioaccumulation and biodiversity reduction. This review critically assesses the presence of microplastics in water, sediments and marine organisms along the Black Sea coast of Turkiye. A total of 45 conducted studies were examined within this review, and 87 % of them were reported from the eastern Black Sea. The results revealed that MPs pollution is more intense in the eastern Black Sea and MP type, polymer and color were found to be dominant with fiber (57.8 %), PET (43.4 %) and white (50 %) respectively. However, being the largest closed sea in the world, the Black Sea is the discharge point of many pollutants from different countries, therefore it is very important to investigate the presence of MPs along the entire Black Sea coast in order to protect and maintain marine ecosystems, to establish the necessary legislation and protection strategies and to take measures to reduce the level of pollution.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104319"},"PeriodicalIF":2.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Population structure of Tachypleus tridentatus in Xiamen Bay: Proposing a network of transboundary marine protected areas 厦门湾三叶草种群结构：跨界海洋保护区网络的构建

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-03 DOI: 10.1016/j.rsma.2025.104321

Yi-Hua Jin , Yi-Jia Shih , Hsin-I. Lin , Ya-Hui Chen , Yung-Sheng Cheng , Chia-Fa Lee , Yang-Chi Chang , Yi Chang

{"title":"Population structure of Tachypleus tridentatus in Xiamen Bay: Proposing a network of transboundary marine protected areas","authors":"Yi-Hua Jin , Yi-Jia Shih , Hsin-I. Lin , Ya-Hui Chen , Yung-Sheng Cheng , Chia-Fa Lee , Yang-Chi Chang , Yi Chang","doi":"10.1016/j.rsma.2025.104321","DOIUrl":"10.1016/j.rsma.2025.104321","url":null,"abstract":"<div><div>Understanding the distribution of habitat and movement patterns for the tri-spine horseshoe crab (<em>Tachypleus tridentatus</em>) is essential for its conservation plan. The present study aims to integrate the juvenile/adult distribution and historical habitat changes in the Xiamen Bay to propose an appropriate regional conservation strategy. We conducted comprehensive field observations around intertidal zones at the Guningtou Horseshoe Crab Conservation Zone (GHCZ) and the Wujiang River Estuary (WRE) in Kinmen County, Taiwan. The annual average juvenile densities in WRE and GHCZ were 0.50 ± 0.52 and 0.21 ± 0.41 individual/m², respectively, with juveniles being more abundant in WRE. Moreover, the mark-recapture experiment showed that <em>T. tridentatus</em> adults were widely distributed along the Kinmen coast, with the catch per unit effort ranging from 4.46 to 5.89 individual/person-time, where the western Kinmen contributed about 68 % of the catch (832/1224 adults). Notably, two marked adults moved between habitats in the Xiamen Bay, covering a linear distance longer than 20 km, which is the longest recorded long-distance movement of <em>T. tridentatus</em>. Most of the nursery habitats and spawning grounds along the Xiamen Bay have been significantly exploited, that most of the historical habitat no longer existing since 2013. As a consequence, a new protected area in the WRE is suggested to preserve the natural habitats for both juvenile nursing and adult spawning. Furthermore, the establishment of transboundary marine protected areas for <em>T. tridentatus</em> is recommended based on the findings of long-distance movement, which are directly linked to the existing habitats and may improve conservation effectiveness.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104321"},"PeriodicalIF":2.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144596126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Annual assessment of mangrove defoliation by Hyblaea puera (Cramer, 1777) around Thane Creek, India using field observations and Sentinel-2 imagery from 2018 to 2022 利用2018年至2022年的野外观测和Sentinel-2图像，对印度Thane Creek附近Hyblaea puera （Cramer, 1777）红树林落叶的年度评估

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-02 DOI: 10.1016/j.rsma.2025.104322

Anjaneyulu A. , Sivaiah B. , Manas Manjrekar , Sathish C. , Acharyulu P.S.N , Naidu V.S. , Nadaf Mahaboob , Sudheer Joseph , Nagaraja Kumar M. , Hari kumar R. , Balakrishnan Nair T.M.

{"title":"Annual assessment of mangrove defoliation by Hyblaea puera (Cramer, 1777) around Thane Creek, India using field observations and Sentinel-2 imagery from 2018 to 2022","authors":"Anjaneyulu A. , Sivaiah B. , Manas Manjrekar , Sathish C. , Acharyulu P.S.N , Naidu V.S. , Nadaf Mahaboob , Sudheer Joseph , Nagaraja Kumar M. , Hari kumar R. , Balakrishnan Nair T.M.","doi":"10.1016/j.rsma.2025.104322","DOIUrl":"10.1016/j.rsma.2025.104322","url":null,"abstract":"<div><div>Mangroves are salt-tolerant trees thriving in coastal and brackish waters, adapting to harsh conditions with features like aerial roots and salt filtering. Out of 64 global mangrove species, 11 are endangered. In Maharashtra, mangroves are concentrated around Mumbai, with an estimated 54.5 square kilometers in Thane Creek, where <em>Avicennia marina</em> shows signs of infestation. This current research used Sentinel-2 data from 2018 to 2022 to assess defoliation caused by <em>Hyblaea puera</em>, the teak defoliator. Ground-truth observations from 2020 to 2022 confirmed the extent of defoliation and identified varying infestation levels categorized as very highly infested, highly infested, moderately infested, low infested, very low infested, and uninfested. NDVI analysis examined these levels in relation to meteorological factors such as rainfall, temperature, humidity, and wind speed. The analysis revealed an extended peak infestation both spatially and temporally, along with severe defoliation during the study period. Six categorical infestation hotspots were identified and compared with meteorological parameters, revealing that <em>Hyblaea</em> outbreaks were more common during low wind speeds and moderate temperatures, with peak infestations occurring after heavy rainfall and under moderate relative humidity. The study suggests further research to explore outbreak causes, insect preferences for specific mangrove species, and the broader implications of defoliation.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104322"},"PeriodicalIF":2.1,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144549600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Measurement and spatio-temporal evolution analysis of high-quality development level in China's marine economy 中国海洋经济高质量发展水平测度及时空演变分析

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-02 DOI: 10.1016/j.rsma.2025.104323

SHA Xiujuan, WANG Yuting, TANG Huimin

{"title":"Measurement and spatio-temporal evolution analysis of high-quality development level in China's marine economy","authors":"SHA Xiujuan, WANG Yuting, TANG Huimin","doi":"10.1016/j.rsma.2025.104323","DOIUrl":"10.1016/j.rsma.2025.104323","url":null,"abstract":"<div><div>High-quality development of the marine economy is one of the key tasks for accelerating the construction of a maritime power and achieving Chinese-style modernization. Based on the new development philosophy, this study constructs an evaluation system for the high-quality development level of China's marine economy from five dimensions: innovation, coordination, green development, openness, and sharing. Using methods such as the entropy method, Kernel density estimation, and Dagum Gini coefficient, the study analyzes the high-quality development level and spatiotemporal evolution of the marine economy in 11 coastal provinces (autonomous regions, municipalities) of China from 2013 to 2022. The findings reveal that: (1) The comprehensive index of high-quality development of China's marine economy exhibits a fluctuating upward trend overall; (2) Spatially, the high-quality development level of China's marine economy generally follows the pattern of \"Eastern > Southern > Northern\"; (3) The Southern Marine Economic Circle displays the largest internal disparities in high-quality marine economic development, followed by the Northern Marine Economic Circle, while the Eastern Marine Economic Circle shows the smallest disparities; (4) The regional gaps among China's three major marine economic circles have gradually narrowed, indicating a trend toward coordinated development. This study provides a quantitative basis for scientifically assessing the high-quality development level of China's marine economy and offers valuable insights for optimizing regional marine economic layouts and advancing the implementation of the maritime power strategy.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104323"},"PeriodicalIF":2.1,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Sediment transport and heavy mineral distribution along the Bavanapadu-Nuvvalarevu shelf, East Coast of India: Implications for coastal Morphodynamics 印度东海岸巴瓦纳帕杜-努瓦拉雷武陆架沉积物运输和重矿物分布：对海岸形态动力学的影响

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-01 DOI: 10.1016/j.rsma.2025.104306

V.S.S.A. Naidu Badireddi , Vijedurga Raju Mullagiri , Bezawada M.V.S. Sekhar , Jaganathan V , Rohit Kumar , Ambili V , K.S.N. Reddy , A. Lakshmi Venkatesh

{"title":"Sediment transport and heavy mineral distribution along the Bavanapadu-Nuvvalarevu shelf, East Coast of India: Implications for coastal Morphodynamics","authors":"V.S.S.A. Naidu Badireddi , Vijedurga Raju Mullagiri , Bezawada M.V.S. Sekhar , Jaganathan V , Rohit Kumar , Ambili V , K.S.N. Reddy , A. Lakshmi Venkatesh","doi":"10.1016/j.rsma.2025.104306","DOIUrl":"10.1016/j.rsma.2025.104306","url":null,"abstract":"<div><div>Offshore sediment transport and mineral dispersal remain less understood compared to coastal settings, despite their importance for geological and resource studies. Unlike previous studies that focused primarily on coastal sediment transport, our research extends offshore, revealing complex interactions between riverine and marine influences. This study provides new insights into sediment transport and heavy mineral distribution along the Bavanapadu–Nuvvalarevu shelf, East Coast of India, by integrating offshore sediment core analysis. Grain-size analysis indicates a transition from medium to fine sand at the surface, with silt and clay dominating subsurface layers, suggesting fluctuating energy conditions. CM diagrams and Pejrup M-triangle plots confirm a river-dominated depositional environment with beach influences, where marine currents contribute to sediment redistribution. Total Heavy Mineral (THM) content across four depth intervals (0.00–4.00 m) shows a consistent decline with depth, with the highest concentrations (1.056–9.667 wt%) in the uppermost layer, decreasing progressively to 0.210–4.417 wt% at 3.00–4.00 m. The study also reveals that heavy mineral concentration is lowest in the coarse (-35 + 60), higher in medium (-60 + 120), and highest in the fine (-120 + 230) fractions. Heavy mineral analysis reveals a decline in concentration with depth, with magnetite, ilmenite, and garnet being most abundant in fine sand, highlighting the role of hydrodynamic sorting. These findings enhance our understanding on offshore placer mineral deposition and sediment redistribution, offering valuable implications for shoreline management and resource exploration. Understanding these dynamics is essential for sustainable coastal planning and the long-term assessment of India’s offshore mineral wealth.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104306"},"PeriodicalIF":2.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Comparative assessment of pelagic/benthic microalgae in the oligotrophic continental shelf of Heraklion Bay, Eastern Mediterranean: A pigments-based chemotaxonomic analysis 地中海东部伊拉克利翁湾少营养大陆架中上层/底栖微藻的比较评价：基于色素的化学分类分析

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-07-01 DOI: 10.1016/j.rsma.2025.104320

Ben Möller , Eleni Livanou , Stella Psarra , Panayota Koulouri , Costas Dounas , Ana Rotter , Manolis Mandalakis

{"title":"Comparative assessment of pelagic/benthic microalgae in the oligotrophic continental shelf of Heraklion Bay, Eastern Mediterranean: A pigments-based chemotaxonomic analysis","authors":"Ben Möller , Eleni Livanou , Stella Psarra , Panayota Koulouri , Costas Dounas , Ana Rotter , Manolis Mandalakis","doi":"10.1016/j.rsma.2025.104320","DOIUrl":"10.1016/j.rsma.2025.104320","url":null,"abstract":"<div><div>This study investigates the dynamics of microalgal biomass at the oligotrophic continental shelf of Heraklion Bay by using pigment-based chemotaxonomy. Sediment and water samples were collected during five oceanographic cruises from June 2014 to September 2015, to analyze spatial and temporal variations in microalgae levels. Using High-Performance Liquid Chromatography (HPLC) and CHEMTAX software, the relative contributions of various algal groups to the overall biomass were deduced in both sample types. Results indicated striking differences between pelagic and benthic microalgal communities. The water column was predominately populated by pico- and nanoplankton, such as <em>Synechococcus</em> and haptophytes. On the contrary, sediments were almost always dominated by diatoms, with their quantity being particularly high in shallower areas with adequate penetration of light. Our findings suggest a substantial contribution of benthic microalgae to total primary production in this ultra-oligotrophic system, as their biomass exceeded the pelagic one in coastal zones up to 70 m deep. Moreover, benthic and pelagic chlorophyll-<em>a</em> concentrations showed different seasonal variations with potentially important implications for the coastal food web. This research underscores the importance of accounting for microalgae in both the water column and sediments when assessing ecosystem productivity and dynamics in oligotrophic coastal regions.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104320"},"PeriodicalIF":2.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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