Journal of Marine Systems最新文献

{"title":"Suspended particulate matter and dissolved inorganic nutrients transport in a small urban shallow subtropical estuary","authors":"Carlos A.F. Schettini ,&nbsp;Jurandir Pereira Filho ,&nbsp;Leonardo R. Rörig","doi":"10.1016/j.jmarsys.2025.104149","DOIUrl":"10.1016/j.jmarsys.2025.104149","url":null,"abstract":"<div><div>The Biguaçu River estuary is a small system that traverses a highly urbanized area and flows into a larger estuarine system, the Baía Norte, in Santa Catarina, Brazil, thus being subject to various anthropogenic stresses. In the present study, we investigated the hydrodynamic regime of this system, assessing sedimentary and biogeochemical dynamics to evaluate the role of this system as a source or sink of materials for the adjacent coastal zone. A sampling campaign was conducted to record hydrodynamic data (water level and currents) and water properties (salinity, temperature, suspended particulate matter (SPM), dissolved oxygen, dissolved inorganic nutrients (nitrite, nitrate, ammoniacal nitrogen, and phosphate), chlorophyll-<em>a</em>, and phycocyanin during two complete cycles of semi-diurnal tides (25 h) under spring tide and average river discharge conditions. The results allowed us to classify the estuary as partially stratified. Based on the Richardson number diagnosis, periods of increased mixing occurred during flood tides, while stable stratification was observed during ebb tides. The variability in SPM concentration was associated with resuspension processes during flood periods, while during ebb tides, the variability was associated with advection. The residual transport of SPM was directed into the estuary. The low levels of chlorophyll-<em>a</em> and phycocyanin found indicate low primary productivity within the estuary, likely due to light limitation or inadequate relative nutrient ratios. The hydrodynamics of this small-scale estuary tend not to favor the establishment of planktonic communities. Additionally, the apparent high organic load related to the poor wastewater treatment in the watershed tends to favor a saprobic rather than a trophic state, limiting autotrophic activity. Nutrient variation showed that nitrate is associated with riverine origin through the estuary, but for ammoniacal nitrogen, nitrite and phosphate, processes occurring in the bay also influenced the estuary.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"252 ","pages":"Article 104149"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145473798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatiotemporal variations in Zhe-Min Coastal Fronts in the East China Sea in winter by deep learning","authors":"Qiang Lian,&nbsp;Xihong Jian,&nbsp;Tengfei Li,&nbsp;Shuwen Zhang,&nbsp;Jin Feng,&nbsp;Zhaoyun Chen","doi":"10.1016/j.jmarsys.2025.104104","DOIUrl":"10.1016/j.jmarsys.2025.104104","url":null,"abstract":"<div><div>Oceanic fronts are crucial for marine ecology and the environment due to their vigorous mixing, high productivity, and abundant fishery resources. In this study, the Zhe-Min Coastal Front (ZMCF) in the East China Sea is identified from remote sensing Sea Surface Temperature (SST) images using a combination of the Belkin O'Reilly Algorithm and a deep learning network, addressing the shortcomings of traditional front gradient algorithms. The Ringed Residual U-Net network excels in detecting the ZMCF, particularly in discontinuous, fragmented, and multi-branch fronts. After detecting the ZMCF areas, the monthly variations in SST gradient, front probability, and offshore distance of the ZMCF are analyzed for winter. An empirical orthogonal function (EOF) method is employed to capture the dominant mode of spatiotemporal variations in the ZMCF probability, demonstrating that the cross-shore movement of the ZMCF is closely related to the magnitude of the northerly wind. Under the conditions of the low phase of the Pacific Decadal Oscillation, the intensified ZMCF is trapped near the coast, driven by strong northerly wind during La Niña years. El Niño events exert the opposite effect.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104104"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144623327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring upwelling phenology and high-frequency hydrographic variability in the Humboldt Archipelago during winter-spring transition and La Niña conditions","authors":"Victor M. Aguilera ,&nbsp;Linda M. Barranco ,&nbsp;Lucas Glasner ,&nbsp;Matías Pizarro-Koch ,&nbsp;Cristian A. Vargas","doi":"10.1016/j.jmarsys.2025.104105","DOIUrl":"10.1016/j.jmarsys.2025.104105","url":null,"abstract":"<div><div>The upwelling system off Coquimbo in central-northern Chile (29–30°S) provides multiple ecosystem services, including the high biodiversity in the Humboldt Archipelago, which benefits human well-being. The influence of upwelling in the archipelago, along with other high-frequency processes that lead to changes in temporal hydrographic conditions (temperature, pH, and oxygen), may have profound effects on the functioning of this ecosystem. In this study, we explored the upwelling phenology (frequency, magnitude, and duration of upwelling events), together with high-frequency variability analyses (semidiurnal, daily, and synoptic), and the vertical structure of the water column in the archipelago from August to November 2022. This period corresponded to the austral winter-spring transition of 2022, which also marked the end of a prolonged La Niña event, during which four months of continuous surface wind and surface (10 m) and subsurface (30 m) hydrographic measurements were analyzed along with four hydrographic surveys. Upwelling events observed throughout the study period promoted negative hydrographic anomalies in temperature (−1.1 °C), oxygen (−79 μmol kg⁻¹), and pH (−0.18 pH_NBS), sometimes lasting up to a week. The synoptic scale dominated the hydrographic variability during the winter (48 % of the variance), whereas the diurnal component became more significant during the spring (37 % of the variance), likely due to higher solar radiation and wider pH/oxygen cycles. Moderated by phytoplankton biomass, low pH (&lt; 7.8 pH_NBS) and hypoxic conditions (&lt; 60 μmol kg⁻¹) prevailed below 30 m depth in the archipelago throughout the study period. Further studies may address the influence of this environmental variability on biological processes related to the productivity of the Humboldt Archipelago.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104105"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nutrient uptake over Koko Seamount, North Pacific","authors":"Yury Zuenko,&nbsp;Anna Kurnosova","doi":"10.1016/j.jmarsys.2025.104121","DOIUrl":"10.1016/j.jmarsys.2025.104121","url":null,"abstract":"<div><div>Water temperature and salinity profiles were measured on April 9–10, 2019 above the summit of Koko Seamount (35^o15’ N 171^o35’ E, with minimal depth of 260 m) and at the slope, with water sampling to measure nutrients concentration, namely dissolved inorganic phosphorus (DIP) and nitrite and nitrate summed as dissolved inorganic nitrogen (DIN). Both DIP and DIN decreased from depth to sea surface proportionally to salinity increasing, with some deviations from this inverse relationship, which were interpreted as the nutrient uptake for the synthesis of new organic matter. These deviations were mostly minor, apparently due to weak density stratification that prevented active phytoplankton growth, but increased up to 0.21 μmol/L for phosphorus and 4.8 μmol/L for nitrogen at 100 m depth above the southern slope and to 0.13 μmol/L and 1.7 μmol/L, respectively, at the summit of seamount. In the first case, the uptake was presumably caused by photosynthesis in the upward flow that transferred nutrient-rich water into the photic layer and simultaneously retained phytoplankton cells in this layer. In the second case, the nutrients were consumed by phytoplankton which were sunk to the lower part of the thick mixed layer but still had sufficient light for photosynthesis at the top of the seamount. The arrangement and characteristics of these productive areas do not contradict to the Taylor column hypothesis that a stream induces an anticyclonic eddy over a seamount with downward flow in the centre and compensating upward flows at the periphery, although such water structure is not observed in the fields of temperature and salinity, possibly because of strong vertical mixing. The N:P ratio in utilized nutrients was inclined to greater nitrogen uptake in the first case and greater phosphorus uptake in the second case, relative to the Redfield ratio. As a result, the DIN:DIP ratio in water decreased above the southern slope and increased above the eastern slope located near the summit, downstream of the Kuroshio Extension. These results approve the thesis on heightened bioproductivity of seamounts and explain one of its possible mechanism.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104121"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatio-temporal variability in medusa biomass linked to oceanographic conditions in a productive shelf ecosystem of the Southwestern Atlantic","authors":"L.M. Chiaverano ,&nbsp;L. Sobrero ,&nbsp;C. Dato ,&nbsp;A. Schiariti","doi":"10.1016/j.jmarsys.2025.104122","DOIUrl":"10.1016/j.jmarsys.2025.104122","url":null,"abstract":"<div><div>This study presents the first large-scale, long-term ecological assessment of a large pelagic cnidarian (<em>Aequorea forskalea</em>) within a highly productive and economically significant marine area of the Southwestern Atlantic. Using nearly three decades of summer fishery survey data (1995–2024), we evaluated the spatial and temporal variability of <em>Aequorea</em> biomass and its relationship with oceanographic conditions. Biomass distribution was spatially structured, concentrating in the San Jorge Gulf, a temporally persistent hotspot of biomass. A major shift in biomass occurred in 2011, marking a transition from a high-biomass phase (1995–2010) to a period of low biomass (2011–2024), coinciding with rising bottom temperatures and decreasing salinity in hotspot areas. Given the spatio-temporal overlap with early life stages of key fisheries species (Argentine hake and Patagonian red shrimp), <em>Aequorea</em> may influence recruitment dynamics through predation and competition. These findings underscore the importance of integrating biological and physical data to understand gelatinous zooplankton dynamics. Long-term fisheries surveys are shown to be valuable sources of baseline data, essential for predicting ecosystem responses to environmental change.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104122"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144892007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the mesophotic South Atlantic reef system (SARS): Mapping, evolution, and implications for Marine Spatial Planning (MSP) in the Western South Atlantic","authors":"João Regis dos Santos Filho ,&nbsp;Gilberto Tavares de Macedo Dias ,&nbsp;Alberto Garcia Figueiredo Jr. ,&nbsp;Juliane Castro Carneiro ,&nbsp;Cleverson Guizan Silva ,&nbsp;Marcelo Sperle Dias ,&nbsp;Alex Cardoso Bastos","doi":"10.1016/j.jmarsys.2025.104119","DOIUrl":"10.1016/j.jmarsys.2025.104119","url":null,"abstract":"<div><div>Despite the global efforts to recognize the seabed, large-scale mesophotic bioconstructions, the western South Atlantic remains outdated. Utilizing the Geographic Information System (GIS) for reprocessing existing datasets, it was possible to bridge this gap and enable the improvement of Marine Spatial Planning (MSP) in poorly mapped areas. This study presents an unprecedented reanalysis of multidisciplinary public datasets, encompassing information on seabed samples, seabed video inspections, interpretations of the collected data, and dating efforts using GIS and statistical approaches. Results revealed a direct correlation between high carbonate content and gravel, and the visual inspection highlighted the presence of mesophotic reefs, confirming the existence of the mesophotic South Atlantic Reef System (SARS). The most prominent bioengineers were crustose calcareous algae (CCA), rhodoliths (coalescent and free-living form), sponges, corals, and Halimeda. There is a direct relationship between reef age, depth and distance to the coast and an inverse relationship between age and latitude. Countries bordering the SARS should incorporate this unique and fragile seabed feature into their MSP governance, helping strike a balance between conservation and economic growth.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104119"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144879872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spatial distributions of acoustic scattering groups during the warm-to-cold transition period in the Senegal coastal ecosystem and their relationships with environmental variables","authors":"Viviane David ,&nbsp;Jérémie Habasque ,&nbsp;Gildas Roudaut ,&nbsp;Louis Marie ,&nbsp;Delphine Thibault ,&nbsp;Anne Lebourges-Dhaussy ,&nbsp;Xavier Capet ,&nbsp;Eric Machu","doi":"10.1016/j.jmarsys.2025.104113","DOIUrl":"10.1016/j.jmarsys.2025.104113","url":null,"abstract":"<div><div>The coastal area of north-west (NW) Africa is a highly productive ecosystem due to the presence of a strong upwelling. This ecosystem supports large populations of small pelagic fish, such as sardinellas, which have significant socio-economic value for local populations. In this study, we analyzed the acoustic data collected during a one-month survey along the Senegalese coast at the beginning of the upwelling season. Hierarchical clusterings were performed to classify the acoustic data from the epipelagic zone (down to 120 m-depth) separately for daytime and nighttime. The analysis identified five echo-groups during the day and six at night. The resulting echo-groups were then compared to stratified midwater trawl samplings to support hypotheses about the organisms responsible for the echoes. Additionally, a remotely operated towed vehicle (called Scanfish) was used to monitor environmental variables down to 100 m depth. Two machine learning models were applied to link the classified echo-groups to the environmental data for both day and night. Each daytime echo group had a corresponding nighttime echo group, with also similar environmental preferences. Fish schools were mainly found in shallow coastal waters while dense sound-scattering layers detected at 38 kHz, likely composed of small fish or fish larvae, were observed in the temperature range of 17°-21 °C for both day and night. The other echo-groups were composed of fluid-like zooplankton or gas-bearing zooplankton. The sixth night echo-group corresponded to migrant organisms and was predominant at night. Overall, the analyses of the abiotic habitats for each echo-group allow us to better understand the organism distributions during the beginning of the NW Africa upwelling season.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104113"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144738421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal and decadal variability of hydrodynamics, sediment dynamics and morphological features at a non-tidal river delta coast","authors":"Cihan Sahin,&nbsp;H. Anil Ari Guner,&nbsp;Mehmet Ozturk,&nbsp;Yalcin Yuksel,&nbsp;Kerem Guner","doi":"10.1016/j.jmarsys.2025.104116","DOIUrl":"10.1016/j.jmarsys.2025.104116","url":null,"abstract":"<div><div>The evolution of a deltaic coastline is affected by the interaction between the river flow and sediment supply, and the distribution of sediments by waves and tidal currents. The purpose of this study is to investigate the hydro-sedimentary processes in a vulnerable non-tidal river delta coast on a seasonal and decadal timescale. The Sakarya River delta coast locally experiences significant coastal retreat related to the energetic wave climate and anthropogenic factors, e.g., decrease of sediment discharge to the coast due to large volume reservoirs along river stream, construction of coastal structures accelerating coastal erosion, and regular dredging activities. Seasonal variability in hydrodynamics and sediment dynamics was investigated using three shipboard surveys (in February, July, and November 2019) conducted in the vicinity of the Sakarya River region of influence, covering different meteorological and hydrological conditions, and therefore allowing for observations under different forcing conditions. The field observations include vertical profiles of salinity, turbidity and temperature, collection of water and bottom sediment samples, and river cross-sectional measurements. The long-term variability of the coastline was analyzed using satellite images and the LITLINE numerical model based on a one-line theory, which was calibrated using satellite data. The field measurements indicate strong seasonal variability in hydrodynamics and sediment dynamics. In winter, freshwater extends offshore for <span><math><mo>∼</mo></math></span>1.5 km from the river mouth with SSC values exceeding 0.16 g/L. High bottom shear stresses induced by strong currents cause the erosion of the river bed, increasing the river depth. In the low-flow seasons, the impact distance of the river flow decreased to <span><math><mo>∼</mo></math></span>1 km and the amount of sediment carried by the river dropped to one-third of the value in winter. The river’s carrying capacity decreases due to reduced river discharge by 75 to 80% compared to winter; therefore, fine material in suspension settles and depth decreases. The deposition of the sediments supplied by the river and the distribution of sediments by waves from west to east result in the accumulation of sand in the river mouth that leads to a decrease in the width of the river mouth from about 100 m (in February) to 20 m (in November). The LITLINE numerical model that was run between 1980 and 2019 indicates a yearly average accretion of +4.2 m at the west of the river mouth, supporting the field observations. Unlike the field observations and numerical model results, the satellite images indicate significant erosion of around -280 m at the west of the mouth of the Sakarya River between 1980-2015. The results reveal that regular dredging operations conducted at the river mouth play an important role in the erosion at the west of the mouth.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104116"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144841447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparing in situ and satellite-derived primary production estimates in the Canary Current upwelling region","authors":"Nauzet Hernández-Hernández ,&nbsp;Yeray Santana-Falcón ,&nbsp;María F. Montero ,&nbsp;Mar Benavides ,&nbsp;Antonio Delgado-Huertas ,&nbsp;Xosé A. Álvarez-Salgado ,&nbsp;Peter Land ,&nbsp;Javier Arístegui","doi":"10.1016/j.jmarsys.2025.104109","DOIUrl":"10.1016/j.jmarsys.2025.104109","url":null,"abstract":"<div><div>Satellite-based Net Primary Production (NPP) estimates are arguably the best way to improve our understanding of large-scale ocean productivity and to validate Earth System Models. Despite significant progress over recent decades, satellite-derived NPP estimates still suffer from large uncertainties, primarily due to the limited number of <em>in situ</em> primary production (PP) measurements available for their validation. In addition, the most widely used algorithms lead to different, sometimes even contradictory, results. Along with measurements of chlorophyll <em>a</em> concentration (Chl<em>a</em>) and phytoplankton biomass (C_phyto), here we present <em>in situ</em> measurements of PP using ¹⁴C uptake and ¹³C isotope tracing, as well as O₂ and ¹⁸O₂ evolution inside incubation bottles, across the transition zone from the coastal Canary Eastern Boundary Upwelling System (CanEBUS) to the open ocean waters of the Cape Verde Frontal Zone (17–23°N; 16–26°W). We also calculate assimilation numbers (<span><math><msubsup><mi>P</mi><mi>opt</mi><mi>b</mi></msubsup><mo>)</mo></math></span> and growth rates (μ) from <em>in situ</em> measurements. First, we compared <em>in situ</em> PP estimates measured concurrently using the four abovementioned techniques. We then tested the performance of four widely-used models including the Vertically Generalized Production Model (VGPM) and its variant based on Eppley's description of the growth function (Eppley), the Carbon-based Productivity Model (CbPM), and the Carbon, Absorption and Fluorescence Euphotic-resolving model (CAFE), along with the satellite-derived input variables that feed these algorithms. We found that the Chl<em>a</em>-based VGPM and Eppley models were significantly correlated with <em>in situ</em> estimates, regardless of the satellite source used as input data. As for models based on C_phyto, only the CbPM from the Visible Infrared Imaging Radiometer Suite (VIIRS) data demonstrated performance comparable to that of the Chl<em>a</em>-based models. In all other cases, C_phyto-based models were uncorrelated with <em>in situ</em> PP estimates. Our results indicate that the bias associated with the VGPM and Eppley models is primarily due to the algorithms' inability to accurately assess <span><math><msubsup><mi>P</mi><mi>b</mi><mi>opt</mi></msubsup><mspace></mspace></math></span>. Meanwhile, the retrieval of both satellite-derived C_phyto and μ leads to a poor estimate of NPP by the CbPM. Our findings suggest that enhancing the accuracy of NPP estimates derived from satellite-based models necessitates the refinement of the methodology employed in deriving the input data and their subsequent validation, rather than developing increasingly complex models.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104109"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nutritional characteristics reveal the biological instincts of three species of shellfish and provide dietary preferences for consumers","authors":"Quanquan Li ,&nbsp;Jinxia Wu ,&nbsp;Jie Lu ,&nbsp;Yajie Chang ,&nbsp;Liubin Feng ,&nbsp;Guiping Shen ,&nbsp;Jianghua Feng","doi":"10.1016/j.jmarsys.2025.104123","DOIUrl":"10.1016/j.jmarsys.2025.104123","url":null,"abstract":"<div><div>Shellfish is one of the most important global marine food supply. In this study, quantitative nuclear magnetic resonance (q-NMR) technique was applied to analyze and compare the nutritional compositions and flavor profiles of three species of shellfish, abalone, oyster and scallop, and correlation and metabolic pathways analyses were used to reveal the possible mechanisms affecting their biological nature. Our results indicate that oysters demonstrate the highest nutritional values and pleasant umami and sweet flavors. The difference of choline metabolism in abalone reflect the essential difference of abalone as gastropod. As the shellfish with the lowest salinity preference, glycine in oyster is more involved in the metabolism of taurine and hypotaurine. The lack of obvious aggregation in correlation analysis of scallops may be due to the nature of subtidal organisms. Our results can help to better guide consumers and provide new insights into the biological nature and functions of shellfish.</div></div>","PeriodicalId":50150,"journal":{"name":"Journal of Marine Systems","volume":"251 ","pages":"Article 104123"},"PeriodicalIF":2.5,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144906920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}