Estuarine Coastal and Shelf Science最新文献

{"title":"Sexual reproduction underlies the bloom dynamics of toxicogenic diatoms of the genus Pseudo-nitzschia H. Peragalo","authors":"Svetlana L. Polyakova,&nbsp;Nikolai A. Davidovich","doi":"10.1016/j.ecss.2025.109349","DOIUrl":"10.1016/j.ecss.2025.109349","url":null,"abstract":"<div><div>Over six years (from March 2018 to the present), representatives of the genus <em>Pseudo-nitzschia</em> have been monitored in the waters of the Karadag Biological Station (44. 91 N, 35. 20 E). The data obtained indicate a periodic increase in the abundance of representatives of the genus in spring and autumn. During the early spring periods of 2021 and 2024, the number of cells in the population increased sharply. The potentially harmful <em>Pseudo-nitzschia calliantha</em> Lundholm, Moestrup et Hasle was continuously present and was dominant during bloom periods. Before this period, the relative number of small, reproductively potent cells increases in the population that enhances the probability of meeting sexual partners and facilitates fusion of gametes during sexual reproduction. Mass development up to phenomenon known as \"blooms\" is thus caused by the need for sexual reproduction in populations of <em>P. calliantha</em>. During the blooms, a redistribution of cell sizes was observed with the gradual disappearance of smaller cells and the appearance of larger ones, resulting from sexual reproduction, the size of which approached the maximum species-specific size. An increase in the sexually effective proportion of the population may predict bloom occurrence. We hypothesize that a sharp increase in cell numbers associated with sexual reproduction is a trait shared by all representatives of <em>Pseudo-nitzschia</em>.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"321 ","pages":"Article 109349"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071075","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":"Ecological restoration measures for shallow coastal habitats of the Baltic Sea and the Skagerrak – effectiveness, costs and knowledge gaps","authors":"P. Kraufvelin ,&nbsp;J. Olsson ,&nbsp;L. Bergström ,&nbsp;U. Bergström ,&nbsp;A.C. Bryhn","doi":"10.1016/j.ecss.2025.109353","DOIUrl":"10.1016/j.ecss.2025.109353","url":null,"abstract":"<div><div>Human-induced pressures are interfering with the environmental status of marine and coastal areas impacting their ability to maintain ecosystem functions and services. In combination with planning and conservation measures to halt ongoing biodiversity loss, there is a need for developing and adapting toolboxes for active and passive restoration. Such habitat-specific restoration measures need to be tailor-made to strengthen the ecosystem services we depend on and to increase the resilience to climate change and other pressures. Today, there is a knowledge gap both regarding potential restoration measures and in the follow-up and evaluation of the effectiveness of existing measures. There is also a lack of general guidance about which measures are the most functional ones. Such knowledge is of utmost importance for implementation of the EU nature restoration law.</div><div>Here, we provide an overview of eight marine/coastal active and passive restoration measures relevant and applicable for the Northeast Atlantic, focusing on the Baltic Sea and the Skagerrak region. The measures reviewed foremostly aim at reversing negative impacts from physical disturbance on coastal habitats, focusing on active restoration of eelgrass beds, macrophyte beds on soft sediment, rocky-shore macroalgal beds, blue mussel reefs, stony reefs, as well as coastal wetlands and flads/lagoons. Two passive restoration methods are also reviewed, including strengthening populations of predatory fish and undertaking habitat protection. When relevant, these measures are reviewed with regard to type of restoration target, threats, benefits from restoration, restoration measures/methodologies and documented effects, pertinent geographical areas, approximate costs and possible additional information/key knowledge gaps. Among the measures reviewed, three stand out as having especially low costs per area/effort, i.e., 1) restoration of coastal wetlands and flads/lagoons, 2) strengthening populations of predatory fish and 3) habitat protection. We further conclude that there is a general lack of evidence for the cost-effectiveness of measures and that even the more costly measures may still bring more benefits than costs. Nevertheless, many measures are still understudied, provide limited positive effects in relation to their costs, are hard to upscale, have geographical limitations for a broader use or are sensitive to poor environmental status and continued environmental degradation. Additionally, all measures continuously need various degrees of development and fine tuning in order to improve success rates and value for money. The results are intended to support management in this maritime region and they are also applicable to other areas where the studied or similar habitat types exist.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"321 ","pages":"Article 109353"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072213","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":"Optimization of oblique drone photogrammetry for avoiding sun glint in submerged seagrass mapping","authors":"Jundong Chen ,&nbsp;Peiran Li ,&nbsp;Jaeyong Lee ,&nbsp;Xinlei Shao ,&nbsp;Fan Zhao ,&nbsp;Jun Sasaki","doi":"10.1016/j.ecss.2025.109356","DOIUrl":"10.1016/j.ecss.2025.109356","url":null,"abstract":"<div><div>Submerged vegetation, such as seagrass meadows, plays a pivotal role in blue carbon sequestration and provides synergistic benefits to ecosystem services. Drone-based monitoring of blue carbon in submerged seagrass meadows is a cost-effective and high-resolution approach. However, the presence of sun glint on the water surface, particularly under sunny conditions, hampers the effectiveness of drone-based mapping. This study presents an improved drone-based oblique photogrammetry method for submerged seagrass meadows mapping. This method is specifically designed to avoid sun glint by leveraging a derived theory that correlates solar angles with the drone gimbal pitch angle. Field experiments conducted in the Futtsu Tidal Flat of Tokyo Bay successfully investigated the feasibility of the proposed method. The results indicate that it is crucial to maintain a gimbal pitch angle of less than 55° to obtain clear orthophotos when mapping submerged seagrass meadows. Variations in the solar azimuth angle significantly constrained the effective mapping window for oblique photogrammetry under sunny conditions. Compared to vertical photogrammetry, oblique photogrammetry exhibited a 10.9% higher reprojection error, an 8.9% increase in ground sample distance, and a 24.2% decrease in automatic tie points per image. This method extends the effective mapping window by 40 minutes under sunny conditions with controlled accuracy loss (8.9% GSD increase), demonstrating operational value for blue carbon quantification in submerged seagrass ecosystems.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"322 ","pages":"Article 109356"},"PeriodicalIF":2.6,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123869","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":"Impacts of nutrient dynamics on three picocyanobacterial (Synechococcus Nägeli, 1849) populations: laboratory experiments and seasonal surveys in the Baltic Sea region","authors":"Zofia Konarzewska ,&nbsp;Sylwia Śliwińska-Wilczewska ,&nbsp;Aldo Barreiro Felpeto ,&nbsp;Adam Latała","doi":"10.1016/j.ecss.2025.109352","DOIUrl":"10.1016/j.ecss.2025.109352","url":null,"abstract":"<div><div>Picocyanobacteria, which are characterized by their small cell size (&lt;2 μm) and high ecological adaptability, are ubiquitous in the aquatic environment. Despite their widespread distribution, their seasonal dynamics and responses to environmental parameters remain poorly characterized, especially in brackish water systems. A better understanding of how environmental factors — including nutrient concentrations — and interspecific interactions between coexisting phenotypes influence the distribution and dynamics of <em>Synechococcus</em> sp. is essential. This is particularly important in ecosystems such as the Baltic Sea, where projected increases in nitrate (NO₃⁻) and phosphate (PO₄³⁻) concentrations over the next decade could alter community composition and promote the formation of cyanobacterial blooms.</div><div>In this study, we used laboratory experiments and field data to investigate how imbalances in NO₃⁻ and PO₄³⁻ availability affect the abundance and interactions between three dominant <em>Synechococcus</em> phenotypes (Types 1, 2 and 3a) in the Baltic Sea. The results show phenotype-specific growth inhibition patterns: Types 1, 2 and 3a showed different responses to filtrates from Type 2 and 3a populations under elevated NO₃⁻ concentrations, while inhibition by Types 1 and 3a was enhanced under PO₄³⁻ limited conditions. These results emphasize the different strategies of nutrient adaptation within <em>Synechococcus</em> phenotypes.</div><div>All phenotypes tested produced microcystin-LR (MC-LR; pg cell⁻¹), and toxin concentration was modulated by NO₃⁻ and PO₄³⁻ concentrations. Of note, the phycoerythrin-rich Type 2 phenotype exhibited the highest MC-LR production under NO₃⁻ limited conditions, suggesting a possible adaptation mechanism to nutrient stress.</div><div>Seasonal analysis revealed high abundances of all <em>Synechococcus</em> phenotypes in spring and fall, with the PE-rich Type 2 dominating the picocyanobacterial community. Principal component analysis (PCA) identified nitrate concentration, temperature and phenotype abundance as the main drivers of <em>Synechococcus</em> distribution, which is consistent with previous observations.</div><div>This study emphasizes the ecological importance and potential dominance of PE-rich <em>Synechococcus</em> in brackish water ecosystems. The results highlight the importance of nutrient availability and intra-specific interactions in the formation of picocyanobacterial communities and emphasize the need to consider these dynamics in future modeling of phytoplankton succession and bloom development in response to changes in climate and nutrient regimes.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"322 ","pages":"Article 109352"},"PeriodicalIF":2.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090570","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":"Assessment of the ecological status of the Gongolaria abies-marina forests (Sargassaceae, Phaeophyceae) in the Canary Islands, Northeast Atlantic ocean","authors":"Carlos Sangil ,&nbsp;Laura Martín-García ,&nbsp;Nereida M. Rancel-Rodríguez ,&nbsp;Javier Reyes ,&nbsp;Daniel Álvarez-Canali ,&nbsp;Marta Sansón","doi":"10.1016/j.ecss.2025.109340","DOIUrl":"10.1016/j.ecss.2025.109340","url":null,"abstract":"<div><div><em>Gongolaria abies-marina</em> is a threatened habitat-forming species. It was once widespread across the shallow subtidal zones of the Canary Islands, but most of these forests have now disappeared. In this study, we present the first assessment of the status of <em>G. abies-marina</em> forests at multiple spatial scales. We evaluated canopy cover and thallus length, along with key forest traits such as community structure, and community descriptors (richness and Shannon‒Wiener diversity). Additionally, we examined the relationships of these ecological descriptors within a range of environmental and anthropogenic variables. The results revealed marked spatial variability in the condition of <em>G. abies-marina</em> forests. In the southern parts of the islands, only small patches or isolated individuals were observed, characterized by low <em>G. abies-marina</em> cover and limited thallus development. In contrast, better forest conditions were recorded along the northern coasts, where populations were larger and, in some sites, formed continuous belts. Both cover and thallus length were higher in these sites and were positively linked to the forest size. Among the environmental variables, wave exposure and cloud cover showed the strongest relationship with <em>G</em>. <em>abies-marina</em> cover and thallus length. No clear relationships were found between the abundance of <em>G. abies-marina</em> and human impacts; however, associations with certain community species were detected.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"322 ","pages":"Article 109340"},"PeriodicalIF":2.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083752","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":"Sandy beaches within meta-social-ecological systems: An integrated framework for ecology, management, and conservation","authors":"Omar Defeo ,&nbsp;Guilherme Corte ,&nbsp;Carlos A.M. Barboza ,&nbsp;Paula Debiasi ,&nbsp;Leonardo Lopes Costa ,&nbsp;Michael Elliott ,&nbsp;Lucia Fanini ,&nbsp;Linda R. Harris ,&nbsp;Nelson Rangel-Buitrago ,&nbsp;John Baxter ,&nbsp;Alberto Basset ,&nbsp;Anton McLachlan","doi":"10.1016/j.ecss.2025.109350","DOIUrl":"10.1016/j.ecss.2025.109350","url":null,"abstract":"<div><div>Sandy beaches are dynamic ecosystems embedded within broader meta-social-ecological systems (M-SES), shaped by cross-ecosystem flows, trophic connectivity, and multiscale human pressures. Here, we develop an integrated M-SES framework to advance the understanding, management, and conservation of sandy beaches as interconnected nodes within wider meta-ecological networks. We synthesize key patterns of metapopulation structure, metacommunity dynamics, and meta-ecosystem processes, highlighting the pivotal role of sandy beaches in sustaining regional biodiversity, energy fluxes, and ecosystem functioning. While interconnections across the Littoral Active Zone (LAZ)—comprising dunes, beaches, and surf zones—underpin local ecosystem functioning, meta-ecosystem processes arise from exchanges between the LAZ and adjacent systems (e.g., estuaries, reefs, nearshore pelagic zones). These connections are increasingly disrupted by both local and cross-realm stressors. We introduce the concept of meta-deposits, framing sandy beaches as dynamic sinks and redistribution hubs for contaminants transported by oceanographic and atmospheric processes. Local stressors (e.g., trampling, sand mining) and cross-realm pressures (e.g., coastal squeeze, plastic pollution, climate change) interact with governance deficits, intensifying ecosystem degradation and undermining biodiversity, ecosystem services, and coastal resilience. The M-SES framework fosters multiscale, adaptive governance by integrating ecological connectivity with institutional and social dimensions. Key strategies include strengthening polycentric governance, promoting nature-based solutions, enhancing resilience through participatory mechanisms, and incorporating cross-realm connectivity into spatial planning where appropriate. Emerging tools—such as environmental <span>DNA</span>, remote sensing, and social-ecological modeling—offer powerful means to monitor biodiversity, track ecosystem change, and support evidence-based decision-making. Finally, we identify critical research priorities to refine meta-ecological applications in sandy beach systems, including improved understanding of dispersal, energy fluxes, biotic interactions, and cumulative anthropogenic stressors. Advancing an integrated M-SES approach is essential to sustain the ecological integrity, biodiversity, and societal benefits of sandy beaches in the face of accelerating global change.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"322 ","pages":"Article 109350"},"PeriodicalIF":2.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107838","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":"Long-term changes of benthic communities of the Rance maritime basin","authors":"T. Brébant ,&nbsp;A. Sturbois ,&nbsp;A.E. Robert ,&nbsp;N. Desroy","doi":"10.1016/j.ecss.2025.109341","DOIUrl":"10.1016/j.ecss.2025.109341","url":null,"abstract":"<div><div>The monitoring and quantification of ecological changes following the construction of the Rance Tidal Power Plant (RTPP) have been extensively discussed in the past and provide us with a valuable reservoir of knowledge on restoration ecology. The Community Trajectory Analysis Framework was used in conjunction with conventional methods to analyse, characterize, and represent long-term changes in soft sediments in the Rance basin (Normano-Breton Gulf) sampled in 1976, 1995, 2010 and 2020. A total of 483 species have been identified since 1976 on soft bottoms. At the basin scale, a group of six species were among the most abundant in each study, revealing a strong impact of dominant species on community structuring in the basin. Benthic assemblages continue to structure themselves nearly 50 years after the construction of the RTPP. The taxonomic trajectories of benthic assemblages were studied at both the basin and local scales. Mainly in response to sedimentological changes, ecological trajectories showed temporal variability upstream and downstream. Local variations in species abundances also contributed to differences in composition observed at the assemblage scale. After a slowdown in the colonization of bottoms in the ‘90s, the number of species experienced a significant increase in 2020, linked to the progression of marine waters, sediment redistribution, the habitat heterogeneity, and the dynamics of seagrass, which have created complex habitat architecture.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"321 ","pages":"Article 109341"},"PeriodicalIF":2.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943705","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":"Larval development of Grimothea gregaria (Fabricius, 1793) (Decapoda: Munididae) in coastal waters of the Falkland Islands","authors":"Rebecca Piontek ,&nbsp;Alexander Arkhipkin ,&nbsp;Tobias Büring","doi":"10.1016/j.ecss.2025.109351","DOIUrl":"10.1016/j.ecss.2025.109351","url":null,"abstract":"<div><div>This study investigates the larval development of <em>Grimothea gregaria</em> (Fabricius 1793), an abundant decapod species in the Falkland Islands' coastal and shelf waters. Sampling occurred from August 2020 to January 2022 at 5m depths of east Falkland, utilizing bongo nets for planktonic collection. Six distinct larval stages were distinguished: Prezoea (P), four Zoea stages (Z), and Megalopea. Our research adds an early zoea stage and introduces a simplified identification guide based on anatomical development and temporal occurrence. Notably, this study reveals significant overlapping bloom periods between stages, with stage P and Z5 presenting the longest durations. The findings analysed temperature and chlorophyll <em>a</em> influence, on larval development stages, providing insights into their ecological role and potential significance. The results indicate rapid ontogenetic development in correlation to temperature and chlorophyll <em>a</em> variations, highlighting the necessity for continued research on the <em>G. gregaria</em>'s impact on marine ecosystems and its potential as a fishery resource. Given its role as a widely consumed species across multiple trophic levels, any shifts in its population dynamics due to climate change could have cascading effects throughout the southwestern Atlantic ecosystem.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"321 ","pages":"Article 109351"},"PeriodicalIF":2.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144067567","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":"Benthic prokaryotic diversity in Po River delta lagoons (North Adriatic Sea) is shaped by riverine freshwater inputs","authors":"Naomi Massaccesi ,&nbsp;Marco Basili ,&nbsp;Manuela Coci ,&nbsp;Daniele Cassin ,&nbsp;Roberto Zonta ,&nbsp;Elena Manini ,&nbsp;Gian Marco Luna ,&nbsp;Grazia Marina Quero","doi":"10.1016/j.ecss.2025.109348","DOIUrl":"10.1016/j.ecss.2025.109348","url":null,"abstract":"<div><div>The Adriatic Sea hosts several highly productive lagoons that serve as critical habitats for many aquatic organisms, but also as key connectivity sites with the adjacent coastal sea. This study investigates the benthic prokaryotic diversity and community composition in the seven main lagoons of the Po River delta (Northern Adriatic Sea, Italy). We aimed to explore whether each lagoon hosts different microbial assemblages and how riverine inputs and anthropogenic pollutants affect community structure Our findings revealed significant differences in the diversity and composition of benthic prokaryotic communities across the lagoons, as well as a substantial variability within individual lagoons. The significance of freshwater taxa to the overall communities was higher in stations where higher river inputs were expected. Feces- and sewage-associated bacteria were found at multiple locations, highlighting the occurrence of anthropogenic contaminants. However, their abundance, did not correlate with the abundance of freshwater taxa, suggesting that they are not only influenced by riverine waters. Multivariate statistical analysis indicated that various factors, such as sediment grain size, nutrient, Al, Fe contents and concentration of inorganic pollutants (As, Hg, Ni, Pb, Zn) significantly contribute to the assembly mechanisms of prokaryotic communities in these lagoons. Our results imply that riverine freshwater inputs and human activities jointly shape the microbial composition of these lagoons, which is consistent with their close connection to the Adriatic Sea. Furthermore, they may facilitate the spread of potentially pathogenic bacteria to the adjacent coastal waters, potentially impacting water quality and recreational activities.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"321 ","pages":"Article 109348"},"PeriodicalIF":2.6,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144067568","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":"Peak longshore sediment transport for storm waves","authors":"Changbin Lim","doi":"10.1016/j.ecss.2025.109347","DOIUrl":"10.1016/j.ecss.2025.109347","url":null,"abstract":"<div><div>Beach sediments are suspended by breaking waves and dissipate across/along the shore under oblique wave action. With horizontal behavior in their transport, they play an important role in longshore sediment transport and shoreline change. Instead of applying the conventional approach derived from wave energy flux, a new model for the peak longshore sediment transport rate (LSTR) is described, considering the horizontal behavior of suspended sediment, along with storm wave scenarios. Additionally, this paper presents a general LSTR derived from the derived peak LSTR equation. The general equation for the LSTR is then validated by comparing it with five conventional equations, notably the famous CERC (1984)and Kamphuis (1991), using observed values of waves, sediment, and the LSTR collected from 12 beach sites in the United States. Good agreement is found in the comparison, which enhances the applicability of the new model for LSTR. Furthermore, the proposed model is applicable for predicting peak LSTR during episodic storms.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"321 ","pages":"Article 109347"},"PeriodicalIF":2.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071163","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}