Regional Studies in Marine Science最新文献

Species compositions and annual dynamics of Scorpaenid fish eggs in tropical seagrass beds: Integrating DNA barcoding and morphological analysis 热带海草床中Scorpaenid鱼卵的种类组成和年动态：整合DNA条形码和形态分析

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-29 DOI: 10.1016/j.rsma.2025.104258

Hong Wang , Wentong Xia , Zhongbo Miao , Songguang Xie

{"title":"Species compositions and annual dynamics of Scorpaenid fish eggs in tropical seagrass beds: Integrating DNA barcoding and morphological analysis","authors":"Hong Wang , Wentong Xia , Zhongbo Miao , Songguang Xie","doi":"10.1016/j.rsma.2025.104258","DOIUrl":"10.1016/j.rsma.2025.104258","url":null,"abstract":"<div><h3>Highlights</h3><div>Fish eggs generally lack species-specific morphological characteristics, complicating taxonomic identification. Tropical coastal seagrass beds, recognized as critical nursery grounds for fish, have been overlooked as spawning habitats.</div></div><div><h3>Methodology</h3><div>From June 2021 to May 2022, monthly nocturnal high-tide sampling during spring tides was conducted in seagrass beds in Gaolong Bay, Wenchang, Hainan Island, China, using large plankton nets. DNA barcoding targeting the cytochrome c oxidase subunit I (COI) gene combined with morphological grouping and stratified sampling was employed to determine species composition and quantify spatiotemporal dynamics of the fish eggs.</div></div><div><h3>Results</h3><div>Of 2276 fish eggs sequenced, 549 were identified as Scorpaenidae, encompassing 9 species across 5 genera. <em>Parascorpaena</em> (3 species) dominated the family numerically (51.0 %). Scorpaenid eggs exhibited elliptical/spherical shapes (diameter: 0.67–1.10 mm), smooth chorion, absent oil globules, and narrow perivitelline space. Eggs occurred year-round (except January and October), with peak richness during March and August and the highest density in May. Most species exhibited temporal overlap.</div></div><div><h3>Conclusion</h3><div>Although species-level morphological identification of fish eggs is limited, family-level morphological grouping combined with stratified DNA barcoding enables efficient community analysis. Integrating molecular and morphological methods facilitates large-scale egg identification, providing critical insights for evaluating tropical seagrass beds as fish spawning grounds.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"88 ","pages":"Article 104258"},"PeriodicalIF":2.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168880","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

Trophic guild structure, feeding overlap and diet-associated anthropogenic particles in the fishes of Manori Creek, Mumbai, India 印度孟买马诺里河鱼类的营养行会结构、摄食重叠和饮食相关的人为颗粒

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-29 DOI: 10.1016/j.rsma.2025.104272

Rajarshi Bandyopadhyay , Shashi Bhushan , K.K. Ramteke , Shobha Rawat , Abhilash Wodeyar K. , Abhijit Mallik , V. Vidhya

{"title":"Trophic guild structure, feeding overlap and diet-associated anthropogenic particles in the fishes of Manori Creek, Mumbai, India","authors":"Rajarshi Bandyopadhyay , Shashi Bhushan , K.K. Ramteke , Shobha Rawat , Abhilash Wodeyar K. , Abhijit Mallik , V. Vidhya","doi":"10.1016/j.rsma.2025.104272","DOIUrl":"10.1016/j.rsma.2025.104272","url":null,"abstract":"<div><div>The study examined the food and feeding habits and the presence of anthropogenic particles of 38 fish species from 25 families in Manori Creek, Mumbai, India, over an eight-month period. Gut contents of 632 individuals, primarily juveniles, were analysed. The diet breadth (Bi) varied from 0.25 to 0.92, indicating generalist tendencies. Six ecological guilds were identified, with Marine Estuarine Opportunists (MMO) being the most significant. Eleven trophic guilds were formed using SIMPROF test and cluster dendrogram, with <em>Acetes</em> feeders (14 species) being the largest guild. <em>Acetes</em> spp. was the most important prey, present in 68.4 % of species. Significant diet overlap occurred within guilds (α ≥ 0.6) but not between different guilds. Anthropogenic particles in fish gut highlighted significant pollution levels. 52.6 % of the studied species belonging to eight trophic guilds were found to have the particles in their gut, ranging from 65.6 % of <em>Coilia dussumieri</em> to 6.52 % of <em>Johnius belangerii.</em> The research will contribute to a comprehensive understanding of the food web, trophic dynamics, and their relationship with the ingestion of anthropogenic particles, thereby supporting the management and conservation of this important coastal ecosystem.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104272"},"PeriodicalIF":2.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144189404","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

Elucidating the role of environmental conditions and nutrients in shaping phytoplankton structures in the Cox’s Bazar coast, Bay of Bengal 阐明环境条件和营养物质在塑造孟加拉湾考克斯巴扎尔海岸浮游植物结构中的作用

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-29 DOI: 10.1016/j.rsma.2025.104265

Mohammed Ashraful Azam Khan, Amena Akter Alpona, Sarif Ullah

{"title":"Elucidating the role of environmental conditions and nutrients in shaping phytoplankton structures in the Cox’s Bazar coast, Bay of Bengal","authors":"Mohammed Ashraful Azam Khan, Amena Akter Alpona, Sarif Ullah","doi":"10.1016/j.rsma.2025.104265","DOIUrl":"10.1016/j.rsma.2025.104265","url":null,"abstract":"<div><div>Phytoplankton communities play a crucial role in marine ecosystems, serving as primary producers and indicators of environmental changes. This study investigates the spatial and temporal variations in phytoplankton structure along the Cox’s Bazar coast of the Bay of Bengal, Bangladesh, in relation to environmental parameters (Temperature, Salinity, pH, DO, Water Current) and nutrient dynamics (NO<sub>2</sub>-N, NO₃-N, NH₄-N, PO₄-P, SiO<sub>4</sub>-Si). Water samples from 12 stations across Bakhkhali, Moheshkhali, Nunier Chara, and Sonadia Island were analyzed to assess phytoplankton diversity and abundance. A total of 34 phytoplankton genera from four major classes—Bacillariophyceae, Dinophyceae, Cyanophyceae, and Chlorophyceae—were identified, with Bacillariophyceae being the most dominant. Canonical Correspondence Analysis (CCA) revealed that temperature and salinity were the primary drivers of phytoplankton distribution, while ammonium, phosphate, and dissolved oxygen played secondary roles. Seasonal trends indicated that Chlorophyceae preferred higher temperatures and dynamic water conditions, whereas Bacillariophyceae thrived in low salinity environments. The dominance of Thalassiosira, Skeletonema, and Chaetoceros at Moheshkhali suggested high primary productivity, while Pseudo-nitzschia abundance at Nunier Chara raised concerns about potential harmful algal blooms. The findings underscore the ecological significance of phytoplankton in coastal waters and provide valuable insights for sustainable fisheries management and marine ecosystem conservation.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"88 ","pages":"Article 104265"},"PeriodicalIF":2.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169304","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

Ecological and energy sector impacts of bisphenol compounds: A case study on their distribution in Bohai Bay seawater 双酚类化合物对生态和能源领域的影响——以渤海湾海水为例

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-28 DOI: 10.1016/j.rsma.2025.104268

Siao Zhang , Siyu Yi , Zeng Liu , Sen Wang , Xi He , Lifeng Shi , Yukuo Liu , Hao Wang

{"title":"Ecological and energy sector impacts of bisphenol compounds: A case study on their distribution in Bohai Bay seawater","authors":"Siao Zhang , Siyu Yi , Zeng Liu , Sen Wang , Xi He , Lifeng Shi , Yukuo Liu , Hao Wang","doi":"10.1016/j.rsma.2025.104268","DOIUrl":"10.1016/j.rsma.2025.104268","url":null,"abstract":"<div><div>This study investigates the dispersion of bisphenol analogues (BPs) in the waters of Bohai Bay and evaluates their ecological danger. A comprehensive analysis shows that there are seven different types of BPs, including bisphenol A (BPA), bisphenol F (BPF), bisphenol AF (BPAF) and bisphenol S (BPS), in water samples collected from Bohai Bay between 2020 and 2024. Although there are regulations in place for the manufacturing and use of BPA in China, it remains prevalent. The investigation demonstrated that the concentrations of BPA in Bohai Bay varied between 51.48 and 220.61 ng/L. The mean value was 136.84 ng/L. The levels of BPF and BPS were the second highest, although still much lower than those of BPA. The ecological danger in the waters of Bohai Bay was assessed using the Risk Quotient (RQ) approach. The findings revealed that the RQ value of BPs was less than 0.1, suggesting a low ecological risk. However, the yearly average levels of BPs showed a rising pattern, indicating the collective impact of industrial activity, agricultural output, and municipal wastewater discharges. Hence, it is advisable to devise and execute efficient strategies to regulate pollution, aiming to diminish the release and ecological buildup of BPs in Bohai Bay. The aim is to protect the environment and human health.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104268"},"PeriodicalIF":2.1,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144177525","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 shift from resource utilization to optimal allocation of resources, capital, and labor: Analyzing China’s coastal fisheries economies 从资源利用到资源、资本和劳动力优化配置的转变：中国沿海渔业经济分析

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-27 DOI: 10.1016/j.rsma.2025.104269

Ruijing Xu , Sufyan Ullah Khan , Yixiao Wang , Yao Zhang

{"title":"The shift from resource utilization to optimal allocation of resources, capital, and labor: Analyzing China’s coastal fisheries economies","authors":"Ruijing Xu , Sufyan Ullah Khan , Yixiao Wang , Yao Zhang","doi":"10.1016/j.rsma.2025.104269","DOIUrl":"10.1016/j.rsma.2025.104269","url":null,"abstract":"<div><div>Exploring the impact of fishery resources on the fishery economy in China’s coastal areas through the “drag effect” of fishery resources is essential for promoting sustainable utilization, improving fishery quality, and addressing regional disparities in fishery development. Using panel data from 11 coastal provinces from 2007 to 2022, this study employs the time-varying CRITIC-entropy method to measure the fishery resource utilization index, empirically investigates the “drag effect” of fishery resources, and analyzes spatial effects using a spatial econometric model. The findings reveal that fishery resource input (R) significantly promotes the fishery economy and injects impetus for the sustained growth of the fishery economy; labor input (L) significantly constrains the fishery economy, probably due to excess inputs, which in turn constrains the production efficiency; and capital input (K) does not significantly affect the fishery economy, so it is necessary to focus on the balanced inputs of each factor. The “drag effect” of fishery resources varies significantly among provinces, categorized into low-promoting provinces (Zhejiang, Shanghai, Jiangsu, Tianjin, Guangdong), low-constraining provinces (Liaoning, Fujian, Hainan, Hebei, Guangxi), and high-constraining provinces (Shandong). Spatially, the “drag effect” is classified into three patterns: Low-Low (Shanghai), High-Low (Fujian), and no significant spatial effects. The “drag effect” of fishery resources in most provinces does not show significant spatial spillover effects. To ensure the sustainable and healthy development of the fishery economy, it is imperative to balance the input of fishery resources, capital, and labor, implement region-specific fishery development strategies, and strengthen cooperation among coastal regions to enhance resource utilization and reduce regional disparities.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"89 ","pages":"Article 104269"},"PeriodicalIF":2.1,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166940","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

Satellite-based chlorophyll-a concentration variability and its relation to environmental changes in the Marmara Sea 基于卫星的马尔马拉海叶绿素-a浓度变异及其与环境变化的关系

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-25 DOI: 10.1016/j.rsma.2025.104267

Erdal Tokat

{"title":"Satellite-based chlorophyll-a concentration variability and its relation to environmental changes in the Marmara Sea","authors":"Erdal Tokat","doi":"10.1016/j.rsma.2025.104267","DOIUrl":"10.1016/j.rsma.2025.104267","url":null,"abstract":"<div><div>This study aims to provide a detailed understanding of the spatiotemporal characteristics of chlorophyll-a (Chl-a) concentrations and their relationships with environmental factors in the Marmara Sea. For this purpose, four-kilometer resolution Aqua MODIS Chl-a concentration data from 2005 to 2021 were examined. Additionally, sea surface temperature (SST), meteorological data and fisheries catch data were analyzed over the same period. The variability and trends in the time series of Chl-a, environmental variables, and fisheries catches, as well as the cross-correlation relationships between these series, were investigated throughout the study period. The Marmara Sea experiences Chl-a blooms from November to April, driven by nutrient fluctuations from Black Sea inflow, river discharges, vertical mixing, upwelling and related processes. Net precipitation and temperature are also important drivers of Chl-a blooms, showing significant correlations with Chl-a, both with and without time lags. Monthly Chl-a climatology fields show uniform changes, with areas of high anthropogenic activity having higher levels throughout the year. Relatively low Chl-a values near the Bosphorus exit were observed in the climatology fields from February to April. Basin-averaged monthly mean Chl-a time series shows significant negative correlations with air temperature, sea temperature, and SST (r = -0.473 to −0.588, p < 0.01) and a positive correlation with net precipitation (r = 0.403, p < 0.01). High precipitation likely leads to elevated Chl-a, with a delayed effect. Air temperature, sea temperature, SST (0.049–0.066 °C/yr, <em>p</em> < 0.01), and evaporation (0.409 mm/yr, <em>p</em> < 0.05) show significant positive trends in the Marmara Sea. Large mucilage events were preceded by low Chl-a likely due to low precipitation. After these events, record-high Chl-a concentrations were observed, exhibiting different distribution patterns.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"88 ","pages":"Article 104267"},"PeriodicalIF":2.1,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154659","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

Occurrence of pharmaceuticals and cocaine in liver and muscle of different fish species from a Brazilian coastal zone 巴西沿海地区不同鱼类肝脏和肌肉中药物和可卡因的含量

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-24 DOI: 10.1016/j.rsma.2025.104266

Vinicius Roveri , Ursulla Pereira Souza , João Henrique Alliprandini da Costa , Walber Toma , Simone dos Anjos Caivano , Alberto Teodorico Correia , Luciana Lopes Guimarães

{"title":"Occurrence of pharmaceuticals and cocaine in liver and muscle of different fish species from a Brazilian coastal zone","authors":"Vinicius Roveri , Ursulla Pereira Souza , João Henrique Alliprandini da Costa , Walber Toma , Simone dos Anjos Caivano , Alberto Teodorico Correia , Luciana Lopes Guimarães","doi":"10.1016/j.rsma.2025.104266","DOIUrl":"10.1016/j.rsma.2025.104266","url":null,"abstract":"<div><div>The objective of the present study was to evaluate, for the first time, the occurrence of twelve pharmaceutically active compounds (PhACs) in the livers and muscles of five fish species in a Brazilian coastal zone. The species <em>(Cathorops spixii, Genidens genidens, Bagre marinus, Larimus breviceps and Pellona harroweri</em>) were selected based on their habitat, and presence in the human diet within the aforementioned coastal zone. The results demonstrated the presence of acetaminophen (ACE), benzoylecgonine (BEN), caffeine (CAF), cocaine (COC), and furosemide (FUR) in the fish tissues, with concentrations ranging from the limit of quantification (LOQ) to 9.17 ng g<sup>−1</sup>. A comparative analysis of the species revealed that <em>C. spixii</em> exhibited the highest accumulation of pharmaceutical agents in both muscle and liver tissues. In particular, the detection of ACE (a compound with low lipophilicity) was observed exclusively in the muscle of <em>C. spixii</em>. Despite its low lipophilicity, the concentrations of CAF were quantified in <em>B. marinus</em> at a level higher than those in <em>C. spixii</em>, <em>G. genidens</em> and <em>L. breviceps</em>. One potential explanation for this observed bioaccumulation of CAF in these species is the historical detection of high concentrations of this compound in this coastal zone. Furthermore, the observed discrepancy between the high levels of COC in relation to BEN in the tissues of <em>C. spixii</em> and <em>L. breviceps</em> can be attributed to the low lipophilicity of BEN and moderate hydrophobicity of COC. Ultimately, the observed contamination has the potential to result in secondary human exposure to PhACs.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"88 ","pages":"Article 104266"},"PeriodicalIF":2.1,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168879","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

Stochastic demographic analysis of the pelagic thresher shark (Alopias pelagicus) in the Ecuadorian Pacific 厄瓜多尔太平洋中上层长尾鲨（Alopias pelagicus）的随机种群分析

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-24 DOI: 10.1016/j.rsma.2025.104264

Diego Mejía , Felipe Galván-Magaña , Jesús Briones-Mendoza , Ulianov Jakes-Cota , Héctor Villalobos , Rodrigo Moncayo-Estrada , Agustín Hernández-Herrera

{"title":"Stochastic demographic analysis of the pelagic thresher shark (Alopias pelagicus) in the Ecuadorian Pacific","authors":"Diego Mejía , Felipe Galván-Magaña , Jesús Briones-Mendoza , Ulianov Jakes-Cota , Héctor Villalobos , Rodrigo Moncayo-Estrada , Agustín Hernández-Herrera","doi":"10.1016/j.rsma.2025.104264","DOIUrl":"10.1016/j.rsma.2025.104264","url":null,"abstract":"<div><div>The pelagic thresher shark (<em>Alopias pelagicus</em>) is one of the most frequently landed species in Ecuador. However, its population has not been thoroughly assessed due to the lack of historical catch and fishing effort data, which precludes the use of classical stock assessment models. Consequently, this study aimed to evaluate the status of <em>A. pelagicus</em> in Ecuador using models designed for data-poor situations, which rely solely on life history parameters. Specifically, an age-structured model based on Leslie's matrix was used. Due to the uncertainty surrounding life history parameters, stochasticity was incorporated using various types of statistical distributions through Monte Carlo simulations. The results indicate that, in the absence of fishing, the population grows at approximately 8 % per year. However, under current fishing levels, the population is declining at a rate of about 5 % annually. Additionally, there is an 85.71 % excess in current fishing levels required to maintain a stable population. These results probably suggest that this stock is overexploited in the Ecuadorian Pacific. Different management scenarios suggest that juveniles are the most sensitive to fishing mortality. Therefore, urgent, and strict management measures are required in Ecuador to protect juveniles, such as implementing a minimum capture size above the <em>L</em><sub>50</sub> (151.4 cm of precaudal length) and protecting pregnant females.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"88 ","pages":"Article 104264"},"PeriodicalIF":2.1,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168807","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

Discovering the bioactive compounds in marine seagrasses from the Gulf of Mannar, India 在印度马纳尔湾的海草中发现生物活性化合物

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-24 DOI: 10.1016/j.rsma.2025.104260

Arya Ramesh , Pinki Kumari Singh , Abinaya Kanagaraja , Meenakumari Sakthivelu , Velmurugan Devadasan , Muthezhilan Radhakrishnan , Subash C.B. Gopinath , Pachaiappan Raman

{"title":"Discovering the bioactive compounds in marine seagrasses from the Gulf of Mannar, India","authors":"Arya Ramesh , Pinki Kumari Singh , Abinaya Kanagaraja , Meenakumari Sakthivelu , Velmurugan Devadasan , Muthezhilan Radhakrishnan , Subash C.B. Gopinath , Pachaiappan Raman","doi":"10.1016/j.rsma.2025.104260","DOIUrl":"10.1016/j.rsma.2025.104260","url":null,"abstract":"<div><div>Seagrass meadows, often referred to as the “lungs of the sea,” are vital marine angiosperms in the coastal ecosystem. This study focuses on the metabolic profiling, mineral quantification, and antioxidant potential of five seagrass species from the Gulf of Mannar, India: <em>Halodule uninervis, Thalassia hemprichii, Enhalus acoroides, Cymodocea serrulata,</em> and <em>Syringodium isoetifolium.</em> FTIR and MRS confirmed the presence of sulfate esters and sulfate stretching. The GC-MS based metabolites identified common compounds were such as n-hexadecenoic acid, phytol, cyclic octa-atomic sulfur, and 3,7,11,15-Tetramethyl-2-hexadecen-1. The ICP-OES quantification revealed high amounts of essential elements like magnesium, calcium, and sulfur, which were further confirmed by EDAX and flame photometry. Among the solvent extracts, hexane extract demonstrated the highest antioxidant potential in <em>S. isoetifolium,</em> showing the most potent inhibition of 90.19 %, 96.09 %, 55.75 %, and 57.44 % in DPPH, ABTS, FRAP, and NOS assays, respectively.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"88 ","pages":"Article 104260"},"PeriodicalIF":2.1,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154658","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 analysis of top-down and bottom-up approaches in maritime spatial planning 海洋空间规划中自上而下与自下而上方法的比较分析

IF 2.1 4区环境科学与生态学

Regional Studies in Marine Science Pub Date : 2025-05-23 DOI: 10.1016/j.rsma.2025.104257

Liisi Lees , Raewyn Peart , Jonne Kotta , Rachel Zuercher , Robert Aps , Karen Greig , Triin Koorits , Daniel Pritchard , Brooke Tucker , Francisco R. Barboza

{"title":"Comparative analysis of top-down and bottom-up approaches in maritime spatial planning","authors":"Liisi Lees , Raewyn Peart , Jonne Kotta , Rachel Zuercher , Robert Aps , Karen Greig , Triin Koorits , Daniel Pritchard , Brooke Tucker , Francisco R. Barboza","doi":"10.1016/j.rsma.2025.104257","DOIUrl":"10.1016/j.rsma.2025.104257","url":null,"abstract":"<div><div>This paper presents a comparative analysis of top-down and bottom-up approaches in Maritime Spatial Planning (MSP), with a focus on Estonia (EE) and New Zealand (NZ). Estonia's MSP, mandated by the European Union’s MSP Directive, is characterised by a top-down approach, with government policies dominating the planning process. Conversely, the Hauraki Gulf Marine Spatial Plan (HGMSP) in NZ exemplifies a bottom-up approach, characterised by a collaborative, stakeholder-led process integrating Indigenous knowledge and scientific data. Our analysis identified key strengths and limitations of both approaches. EE’s legally binding plan offers strong legal authority, clear responsibilities, and enforceable conditions but is less flexible in addressing new knowledge and faces challenges in fully engaging diverse stakeholder groups. In contrast, NZ’s non-statutory plan enables strong stakeholder leadership and broad participation, including Indigenous communities, but lacks formal enforcement mechanisms and sufficient resourcing to support long-term implementation. The analysis emphasises the significance of flexible and inclusive MSP strategies for achieving a balance between socio-economic development and marine ecosystem conservation. By comparing these two real-world examples, this study highlights how both systems provide valuable lessons and complementary insights for improving future MSP practices.</div></div>","PeriodicalId":21070,"journal":{"name":"Regional Studies in Marine Science","volume":"88 ","pages":"Article 104257"},"PeriodicalIF":2.1,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134686","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}

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