Estuarine Coastal and Shelf Science最新文献

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Integration of causal deep learning for tide level forecasting in data-scarce coasts 基于因果深度学习的海岸潮位预测
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-03-01 Epub Date: 2026-01-17 DOI: 10.1016/j.ecss.2026.109715
Mohammad Reza Nikoo
{"title":"Integration of causal deep learning for tide level forecasting in data-scarce coasts","authors":"Mohammad Reza Nikoo","doi":"10.1016/j.ecss.2026.109715","DOIUrl":"10.1016/j.ecss.2026.109715","url":null,"abstract":"<div><div>Accurate prediction of tide gauge heights is crucial for effective coastal risk management, especially in data-scarce regions like Oman, where monitoring networks are limited. High Tide Flooding (HTF) behavior on Masirah Island is investigated in this study by combining meteorological records and a cutting-edge causal deep learning model. We compare four models—Gated Recurrent Unit (GRU), Long Short-Term Memory (LSTM), its variant Bidirectional LSTM (Bi-LSTM), Temporal Convolutional Network (TCN), and a newly developed Causal-Bi-LSTM—for their suitability in modeling tide gauge levels using precipitation, temperature, wind speed, and sea level pressure derived from ERA5-Land climate variables. Our study reveals that HTF events are highly seasonal, with 70 % occurring in June, primarily due to the combined effects of tidal (median contribution: 53.24 %) and non-tidal residual (110.57 %) effects. The Causal-Bi-LSTM model performed best (Nash–Sutcliffe Efficiency = 0.961, Correlation Coefficient = 0.99) when incorporating physical constraints, while sensitivity analysis revealed that sea level pressure was the key driver. Future projections under SSP scenarios unveil alarming trends: while SSP126 maintains conditions relatively stable, SSP245 and SSP585 exhibit intensification and seasonality in HTF events, with the high emission scenario (SSP585) projecting 36 events by mid-century and extending vulnerability to months not affected before. These results highlight the need for region-specific adaptation strategies and reveal how causal deep learning can enhance flood forecasting in terms of both accuracy and physical interpretability. The study provides a methodology for coastal vulnerability assessment that can be applied to other data-scarce regions with rising flood hazards under climate change.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"330 ","pages":"Article 109715"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038338","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}
引用次数: 0
Lithologic facies and stratigraphic evolution of North Atlantic seagrass beds reveal centennial-scale resilience to burial events 北大西洋海草床的岩性和地层演化揭示了百年尺度上对埋藏事件的恢复能力
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-03-01 Epub Date: 2025-12-29 DOI: 10.1016/j.ecss.2025.109689
O.L. Key, Y. Sharifi, L.M. Cooper, A.B. Rodriguez
{"title":"Lithologic facies and stratigraphic evolution of North Atlantic seagrass beds reveal centennial-scale resilience to burial events","authors":"O.L. Key,&nbsp;Y. Sharifi,&nbsp;L.M. Cooper,&nbsp;A.B. Rodriguez","doi":"10.1016/j.ecss.2025.109689","DOIUrl":"10.1016/j.ecss.2025.109689","url":null,"abstract":"<div><div>Seagrass beds are depositional environments that support healthy estuaries and act as significant blue carbon sinks. Criteria for differentiating seagrass sedimentary units from underlying strata is lacking; however, this information is needed to accurately assess the carbon stocks of modern seagrass beds, recognize the presence of older seagrass beds that may be preserved in the stratigraphic record, and assess the resilience of seagrass habitats to burial events. This study aims to develop a seagrass depositional facies model from 24 cores, collected in a temperate, back-barrier setting. We collected four core transects along the southern part of the Outer Banks, North Carolina, U.S.A., extending perpendicularly from the back barrier shoreline of Core Banks into Core Sound across patchy and continuous seagrass meadows (<em>Zostera marina</em> and <em>Halodule wrightii</em>). Our resulting facies model demonstrates that high salinity seagrass beds consistently form a depositional sequence composed of a lower bioturbated sandy unit and an upper organic-rich muddy unit. The lower bioturbated unit and the upper organic-rich unit represent an early discontinuous seagrass bed and a subsequent well-established continuous seagrass meadow, respectively, based on the presence of these units at the surface of corresponding modern beds. Earlier seagrass units (∼1265–1465 CE) were buried as shifting inlets deposited flood-tidal delta sand on meadows during periods of increased storminess. We found multiple stacked seagrass depositional sequences, indicating that seagrass meadows buried by heightened storm and/or inlet activity resisted total erosion and were subsequently revegetated. Stacked seagrass sequences reflect the cyclical succession of meadow establishment, sand burial, and regrowth characteristic of the dynamic back-barrier setting. This work underscores the strong resilience of seagrass beds, and their associated carbon stocks, to disturbances such as storm burial while providing a framework for identifying carbon stocks throughout the entire seagrass depositional environment.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"330 ","pages":"Article 109689"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145852491","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}
引用次数: 0
Impacts of a water-sediment regulation scheme on fish community assembly in the Yellow River Estuary and adjacent neritic waters 水沙调节方案对黄河口及邻近浅海鱼类群落聚集的影响
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-03-01 Epub Date: 2025-12-30 DOI: 10.1016/j.ecss.2025.109690
Yunlong Chen , Xiaomin Zhang , Xiangyu Cheng , Shuai Cai , Fan Li , Harry Gorfine , Yongqiang Shi , Yanyan Yang , Xianshi Jin , Xiujuan Shan
{"title":"Impacts of a water-sediment regulation scheme on fish community assembly in the Yellow River Estuary and adjacent neritic waters","authors":"Yunlong Chen ,&nbsp;Xiaomin Zhang ,&nbsp;Xiangyu Cheng ,&nbsp;Shuai Cai ,&nbsp;Fan Li ,&nbsp;Harry Gorfine ,&nbsp;Yongqiang Shi ,&nbsp;Yanyan Yang ,&nbsp;Xianshi Jin ,&nbsp;Xiujuan Shan","doi":"10.1016/j.ecss.2025.109690","DOIUrl":"10.1016/j.ecss.2025.109690","url":null,"abstract":"<div><div>The Yellow River is the river with the largest sediment content and transport in the world, featured by an unbalanced water-sediment relationship. Since 2002, a water-sediment regulation scheme (WSRS) has been implemented when necessary to alleviate this spatio-temporal imbalance of water and sediment. The resulting abrupt increases in runoff, sediments, and nutrients within a short period significantly impact on the estuarine environment. To explore ecological effects that WSRS has on fish communities in the Yellow River Estuary (YRE) and its adjacent neritic waters, the composition, dominant species, spatial distribution and community assemblages were analyzed based on three fishery-independent surveys in 2023. The results showed that 42 fish species were captured, belonging to 37 genera, 20 families, and 8 orders. High species turnover index after operation of the WSRS suggested a difference in the species composition of fish communities. Dominant species were mainly small low-economic species, among which kammal thryssa (<em>Thryssa kammalensis</em>) and branded goby (<em>Chaeturichthys stigmatias</em>) persisted as dominant species over time. The highest similarity among survey stations occurred during the WSRS operational period, reaching 51.99 %, indicating a moderate similarity of fish community structure. In the southern YRE, especially south of 37.75°N, the similarity of community structure was low across all three periods. Whereas that in the northern YRE was obviously affected by the WSRS process. Especially during and after the WSRS, the similarity of fish community structure was spatially correlated with the distance from the estuary. Environmental filtering dominated the assembly mechanism before the WSRS, while competitive interaction prevailed during and after the WSRS. Bottom temperature primarily shaped fish communities in the YRE. Our results provide a theoretical basis for assessing the ecological impacts of typical human interventions, such as the WSRS, on vulnerable estuarine ecosystems. This understanding can further support the scientific development of biodiversity conservation and ecological restoration strategies.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"330 ","pages":"Article 109690"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886024","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}
引用次数: 0
Before the bloom: How pre-winter conditions influence jellyfish production 开花前:冬前环境如何影响水母的生产
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-03-01 Epub Date: 2025-12-23 DOI: 10.1016/j.ecss.2025.109679
D. Ford, N.E.C. Fleming
{"title":"Before the bloom: How pre-winter conditions influence jellyfish production","authors":"D. Ford,&nbsp;N.E.C. Fleming","doi":"10.1016/j.ecss.2025.109679","DOIUrl":"10.1016/j.ecss.2025.109679","url":null,"abstract":"<div><div>Jellyfish are being increasingly targeted by fisheries, but their complex life cycles make it difficult to predict stock availability. The seasonal recruitment of juvenile jellyfish (ephyrae) is regulated by the reproductive output of the benthic polyp life stage. Within temperate environments, polyps typically undergo strobilation and produce ephyrae in spring. While previous works have documented how winter conditions can influence strobilation success, the potential role of pre-winter environmental conditions on ephyra production remains unknown. This research investigated a well-studied jellyfish species of bioresource interest (<em>Aurelia aurita</em>) in a multi-phase experiment designed to a) quantify the effects of temperature and food availability on polyp development, and b) determine how the environmental conditions in which polyps were reared influence ephyra production and size following a controlled winter simulation. The results demonstrated that warmer pre-winter conditions not only enhanced initial somatic growth rates and bud production, but also increased the likelihood of mature polyps strobilating after temperatures had been reduced. Although polyps grew larger and subsequently produced more ephyrae when pre-winter food availability was increased, the likelihood of strobilation and total ephyra production of polyp populations was unaffected by previous feeding regimes. There was also no relationship between the diameter of parent polyps prior to winter simulation and the mean diameter of their ephyra progeny. Warmer pre-winter conditions could promote strobilation by increasing development rates or strengthening the environmental stimulus when temperatures decrease. These results demonstrate the potential value of considering pre-winter temperature when forecasting the recruitment of jellyfish stocks during summer.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"330 ","pages":"Article 109679"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886020","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}
引用次数: 0
Impacts of submarine groundwater discharge on nutrient variations and diatom species dominance in a brackish pond 海底地下水排放对咸淡水池塘营养物变化及硅藻种类优势的影响
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-03-01 Epub Date: 2026-01-14 DOI: 10.1016/j.ecss.2026.109716
Yejin Park , Jeonghyun Kim , Soojin Kang , Yebin Jeon , Jinsoon Park , Inho Yang , Yong Hwa Oh
{"title":"Impacts of submarine groundwater discharge on nutrient variations and diatom species dominance in a brackish pond","authors":"Yejin Park ,&nbsp;Jeonghyun Kim ,&nbsp;Soojin Kang ,&nbsp;Yebin Jeon ,&nbsp;Jinsoon Park ,&nbsp;Inho Yang ,&nbsp;Yong Hwa Oh","doi":"10.1016/j.ecss.2026.109716","DOIUrl":"10.1016/j.ecss.2026.109716","url":null,"abstract":"<div><div>Submarine groundwater discharge (SGD) is an important driver for dissolved chemical constituents to oceans. To quantify SGD and determine its effects on nutrient concentration variations and benthic diatom community in a brackish pond system, we measured the concentrations of dissolved inorganic nutrients (nitrogen, phosphorus, and silicate), dissolved organic carbon (DOC), fluorescent dissolved organic matter (FDOM), and <sup>222</sup>Rn activities. Based on the <sup>222</sup>Rn mass balance, the estimated SGD rate in summer (32 ± 30 cm d<sup>−1</sup>) was approximately three times higher than that in winter (11 ± 6.2 cm d<sup>−1</sup>), and the SGD-derived nutrient fluxes were approximately 4–6 times higher in summer than in winter. The excess FDOM and DOC in the pond water observed in summer seems to be due to relatively higher SGD-derived nutrient inputs followed by higher biological activities such as diatom production, which is supported by the high (&gt;1; favorable condition for diatoms) dissolved inorganic silicate (DSi) to nitrogen (DIN) ratio and significant correlations (r<sup>2</sup> = 0.88 for C1, 0.87 for C2, and 0.87 for C4, <em>p</em> &lt; 0.05) between the excess FDOM and DSi:DIN ratio in summer. The abundance of dominant benthic diatom species in the pond sediment indicated significant differences in diatom communities with salinity, which was primarily controlled by the SGD input. Furthermore, the actinomycetes (<em>Gordonia</em> sp.) observed in the pond sediments indicate that this pond had been used as a wastewater pathway in the past. Our results contribute to a better understanding of the influence of submarine groundwater discharge on nutrient concentrations and associated biogeochemical characteristics in coastal systems such as brackish ponds.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"330 ","pages":"Article 109716"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038476","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}
引用次数: 0
Observations on “Summary reply to ‘Discussion: Tidal variation and flow dynamics in Indian Sundarban based on field observation and numerical models’ by Das et al. (2025). DOI: https://doi.org/10.1016/j.ecss.2025.109526” Das et al.(2025)对“讨论:基于野外观测和数值模型的印度孙德班潮汐变化和流动动力学”的简要答复”的观察。DOI: https://doi.org/10.1016/j.ecss.2025.109526”
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-03-01 Epub Date: 2025-12-15 DOI: 10.1016/j.ecss.2025.109670
Sayantan Das , Swati Ghosh , Deeprita Ghosh , Abhijit Das , Sunando Bandyopadhyay
{"title":"Observations on “Summary reply to ‘Discussion: Tidal variation and flow dynamics in Indian Sundarban based on field observation and numerical models’ by Das et al. (2025). DOI: https://doi.org/10.1016/j.ecss.2025.109526”","authors":"Sayantan Das ,&nbsp;Swati Ghosh ,&nbsp;Deeprita Ghosh ,&nbsp;Abhijit Das ,&nbsp;Sunando Bandyopadhyay","doi":"10.1016/j.ecss.2025.109670","DOIUrl":"10.1016/j.ecss.2025.109670","url":null,"abstract":"","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"330 ","pages":"Article 109670"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145852492","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}
引用次数: 0
Conservation of the Varkala coastal cliff, a National Geoheritage site along the southwestern coast of India: A geo-environmental approach 保护Varkala海岸悬崖,沿印度西南海岸的国家地质遗产:地质环境方法
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI: 10.1016/j.ecss.2025.109672
L. Sheela Nair , M.K. Rafeeque , V. Nandakumar , V.I. Tiju , N. Sreejith , D. Padmalal
{"title":"Conservation of the Varkala coastal cliff, a National Geoheritage site along the southwestern coast of India: A geo-environmental approach","authors":"L. Sheela Nair ,&nbsp;M.K. Rafeeque ,&nbsp;V. Nandakumar ,&nbsp;V.I. Tiju ,&nbsp;N. Sreejith ,&nbsp;D. Padmalal","doi":"10.1016/j.ecss.2025.109672","DOIUrl":"10.1016/j.ecss.2025.109672","url":null,"abstract":"<div><div>The Varkala cliff in the SW coast of India, with its expansive frontal beaches, has the distinction of being the 27th National Geological Monument in India, and efforts are underway to get this unique geological marvel recognised as a geopark. However, the existence of this cliff, belonging to the Warkalli Formation of Mio-Pliocene age, has been threatened in recent decades by both natural and anthropogenic factors. This is mainly attributed to climate change, sea level rise, and the adversities of rapid economic developments. The present study aims to identify critical areas by investigating the causative factors, such as geological, marine, and anthropogenic factors, that have led to the degradation of this geomorphological marvel. Based on the comprehensive study, such as cross-profile analysis, groundwater table mapping, shoreline change analysis using DSAS, sediment transport characterization, and wave modeling, it is revealed that wave-induced toe erosion, groundwater seepage through the friable sandstones of the formation, other physical, chemical, and biological interactions as well as human interferences are the main drivers behind the degradation. The vulnerable locations are under high development pressure, which needs to be regulated at any cost. A set of multi-faceted recommendations combining ‘grey’, ‘green’, and ‘hybrid’ measures is proposed herein to protect and preserve the Varkala cliff and its frontal beaches. Strict adherence to the implementation of the Integrated Coastal Zone Management (ICZM) plan to control developmental activities, continuous monitoring of the cliff coast for taking timely remedial measures, application of appropriate shore protection techniques, hybrid measures for the protection of the cliff face, etc., is suggested for immediate consideration.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"329 ","pages":"Article 109672"},"PeriodicalIF":2.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839945","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}
引用次数: 0
Assessing trait-based approach to long-term monitoring of soft-bottom macrobenthic assemblages in a polluted estuary 基于特征评价的河口污染软底大型底栖生物群落长期监测方法
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-02-01 Epub Date: 2025-12-21 DOI: 10.1016/j.ecss.2025.109680
J. Emilio Sánchez-Moyano , Emilio M. García-Adiego , Francisco J. Estacio , Isabel García-Asencio
{"title":"Assessing trait-based approach to long-term monitoring of soft-bottom macrobenthic assemblages in a polluted estuary","authors":"J. Emilio Sánchez-Moyano ,&nbsp;Emilio M. García-Adiego ,&nbsp;Francisco J. Estacio ,&nbsp;Isabel García-Asencio","doi":"10.1016/j.ecss.2025.109680","DOIUrl":"10.1016/j.ecss.2025.109680","url":null,"abstract":"<div><div>The use of biological traits analysis and functional diversity has emerged as a valuable tool for assessing anthropogenic impacts or disturbances on coastal communities. In this study, we applied this approach to evaluate the long-term variation in soft-bottom macrobenthic assemblages from 1998 to 2016 in the highly urbanized and industrialized Odiel-Tinto estuary. The assemblages were structured along the natural gradient from the estuary to the marine environment, although anthropogenic pressures, such as dredging and heavy metal contamination, played a decisive role in shaping functional composition. Functional indices, such as functional richness and Rao's Q, proved to be more sensitive indicators of environmental changes than traditional taxonomic indices. In the inner zones, species richness and functional diversity were significantly lower, with communities dominated by small-sized opportunistic species typical of unstable environments. In contrast, the outer marine zones supported a more diverse range of feeding modes and functional traits. Traits related to body size, larval or egg development, feeding modes, and AMBI categories exhibited clear responses to environmental stressors, providing valuable insights into the resilience and recovery potential of macrobenthic communities. This study enhances our understanding of estuarine ecosystem responses to anthropogenic pressures and offers essential data for global estuarine conservation efforts, contributing to the formulation of management strategies applicable to similar environments worldwide.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"329 ","pages":"Article 109680"},"PeriodicalIF":2.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839947","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}
引用次数: 0
Quantifying coastal blue carbon through primary production in a subtropical bay 通过亚热带海湾初级生产量化海岸蓝碳
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI: 10.1016/j.ecss.2025.109673
Lan-Feng Fan , Jui-Sheng Chang , Wen-Chen Chou , Liang-Yu Chen , Tzong-Yueh Chen
{"title":"Quantifying coastal blue carbon through primary production in a subtropical bay","authors":"Lan-Feng Fan ,&nbsp;Jui-Sheng Chang ,&nbsp;Wen-Chen Chou ,&nbsp;Liang-Yu Chen ,&nbsp;Tzong-Yueh Chen","doi":"10.1016/j.ecss.2025.109673","DOIUrl":"10.1016/j.ecss.2025.109673","url":null,"abstract":"<div><div>Coastal ecosystems play a disproportionate role in global carbon sequestration, yet conventional assessments often underestimate contributions from phytoplankton and benthic macroalgae. In this study, we quantified the carbon sequestration capacity of Maoao Bay, a subtropical embayment in the northwestern Pacific, by partitioning fluxes into phytoplankton-mediated biological carbon pump (phyto-BCP), phytoplankton-associated microbial carbon pump (phyto-MCP), and benthic macroalgal export production (benthic EP). Year-round sampling revealed strong seasonality in both pelagic and benthic primary production: phytoplankton production peaked during winter under enhanced nutrient availability, whereas subtidal macroalgal production was highest in summer under elevated light conditions. Total carbon sequestration averaged 88.3 kgC d<sup>−1</sup> (1.62 tCO<sub>2</sub>e ha<sup>−1</sup> yr<sup>−1</sup>), with phyto-BCP contributing the largest annual fraction (68.3 %), followed by benthic EP (17.5 %) and phyto-MCP (14.2 %). Despite occupying only ∼12 % of the bay, macroalgal habitats exhibited higher per-area carbon removal efficiency than phytoplankton, highlighting their disproportionate role in coastal carbon sequestration. These findings underscore the ecological complementarity of pelagic and benthic primary producers and suggest that targeted restoration or expansion of macroalgal beds could significantly enhance nearshore blue carbon pathways, supporting regional climate mitigation strategies and broader sustainability objectives.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"329 ","pages":"Article 109673"},"PeriodicalIF":2.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145839996","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}
引用次数: 0
Uncovering biogenic methane and vertical stratified cycling of elements in the Zhoushan offshore area 舟山近海生物甲烷与元素垂直分层循环揭示
IF 2.6 3区 地球科学
Estuarine Coastal and Shelf Science Pub Date : 2026-02-01 Epub Date: 2025-12-01 DOI: 10.1016/j.ecss.2025.109648
Xujia Ming, Hanghang Song, Qingfen Liu, Rongguo Su, Xianguo Li, Dahai Zhang
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