Estuarine Coastal and Shelf Science最新文献

{"title":"The Great Mississippi River Flood of 1927: Morphodynamic analysis of the Caernarvon crevasse event","authors":"Ahmed Khalifa ,&nbsp;Ehab Meselhe ,&nbsp;Kelin Hu ,&nbsp;John Day ,&nbsp;Mead Allison","doi":"10.1016/j.ecss.2025.109234","DOIUrl":"10.1016/j.ecss.2025.109234","url":null,"abstract":"<div><div>Wetlands in deltas across the globe have been severely affected by climate change-induced sea level rise. One strategy to mitigate these impacts is to engineer large river sediment diversions. In this study, we use a morphodynamic model to simulate and quantify the depositional footprint of the 80-day Caernarvon crevasse event that occurred during the Great Mississippi Flood of 1927 in Breton Sound Basin, Louisiana, USA, as an analog to engineered diversions. We examine the effects of river sediment load by modeling the same crevasse splay formation under the past, current-day, and future projected sediment load decline of the Lower Mississippi River. To assess the model's performance, we compared crevasse formation to field-measured deposition thickness and mass per area. The model shows that under current sediment loads, a flood discharge comparable to the 1927 event would build 70% less land was it to occur today. Further, silt falling velocity and clay flocculation percentage are the two key factors controlling splay footprint and deposition. The model also demonstrates the effects of sediment supply decline on the land-building potential of engineered sediment diversions. These sediment diversions, designed to mimic natural crevasse splay formation, are being pursued as a coastal restoration strategy in the Mississippi Delta. The analysis presented here emphasizes key attributes of engineered diversions and their relevance to the successful implementation of these restoration strategies, including flow capacity, ability to distribute sediment in the receiving area, and the extent to which they would induce marsh inundation.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109234"},"PeriodicalIF":2.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Possible processes responsible for the decline in the stock of Manila clam based on long-term observations in Banzu tidal flat","authors":"Mitsuharu Toba ,&nbsp;Yutaka Kobayashi ,&nbsp;Toshihiro Hayashi ,&nbsp;Yuji Kagami","doi":"10.1016/j.ecss.2025.109232","DOIUrl":"10.1016/j.ecss.2025.109232","url":null,"abstract":"<div><div>In this study, we conducted three surveys of the Manila clam, <em>Ruditapes philippinarum</em>, in the Banzu tidal flat, Tokyo Bay, from the late 1980s to early 2020s. The surveys included core sampling at six sites along the onshore–offshore transect line to assess density changes after settlement, fishing gear sampling at 64 sites to examine changes in clam distribution across the area, and sampling at 14 sites to monitor changes in condition index. We identified two seasonal cohorts of clams per year derived from spring and autumn spawning, which consisted of complementary and primary components, respectively, to create the next-generation clam stock. The decline in the autumn spawning cohort is a fundamental aspect of the decrease in clam stocks in Banzu. This decline was attributed to reduced survival after settlement, primarily affecting relatively large individuals with a shell length (SL) of approximately &gt;20 mm. As the autumn cohort reaches an SL of &gt;20 mm only after the summer following spawning, it is assumed that size-dependent factors affecting clams with SL &gt; 20 mm after summer were responsible for the recorded decrease in clam stocks in Banzu. Thus, the decline in Manila clam stocks can likely be attributed to mortality from energy loss associated with spawning under oligotrophic and high-temperature conditions and increased predation pressure of black porgy populations with synergistically acting reduced burrowing ability of clams because of low water salinity.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109232"},"PeriodicalIF":2.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578088","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 connectivity between mangroves and seagrasses increases sediment blue carbon storage","authors":"Xinao Guo ,&nbsp;Shanshan Song ,&nbsp;Lieyi Chen ,&nbsp;Conghe Zhang ,&nbsp;Shengbin Ye ,&nbsp;Yali Ding ,&nbsp;Ruikun Gou ,&nbsp;Xiaoping Huang ,&nbsp;Shuguo Lv ,&nbsp;Neil Saintilan ,&nbsp;Daniel A. Friess ,&nbsp;Guanghui Lin","doi":"10.1016/j.ecss.2025.109231","DOIUrl":"10.1016/j.ecss.2025.109231","url":null,"abstract":"<div><div>Mangrove forests and seagrass meadows are important coastal blue carbon ecosystems for mitigating climate change and often co-occur as coastal continuums in tropical and subtropical regions. While mangrove contributions to the enhancement of carbon storage in seagrass sediments is well-known, the potential impact of seagrass meadows—whose biomass is an order of magnitude smaller than that of mangroves—on mangrove ecosystems remains unclear. In this study, we investigated differences in shallow surface (0–30 cm) sediment carbon storage across two mangrove-seagrass continuums and two mangrove-only sites in a semi-closed bay in Zhanjiang, Guangdong, China. Higher sediment carbon densities (by 80.7%–124.3%) in continuum sites indicate that seagrass presence enhanced the carbon stocks of both mangrove and unvegetated tidal flats. Stable isotope analysis showed that the enhancement of sediment carbon was due to increased deposition of both autochthonous and allochthonous organic carbon (in a lesser degree) from adjacent ecosystems. Therefore, ecosystem connectivity between mangrove forests and seagrass meadows can substantially increase sediment carbon densities due to dense seagrass vegetation reducing water velocity and turbulence, highlighting the importance of protecting interconnected ecosystems and coastal landscape-scale management for climate change mitigation.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109231"},"PeriodicalIF":2.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593479","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":"Ordered mortality of mangroves under extreme flooding in a tropical microtidal estuarine lagoon in China","authors":"Lin Zhang ,&nbsp;Haifeng Fu ,&nbsp;Mao Wang ,&nbsp;Wenqing Wang","doi":"10.1016/j.ecss.2025.109233","DOIUrl":"10.1016/j.ecss.2025.109233","url":null,"abstract":"<div><div>Tidal inundation is a key environmental factor in coastal wetland ecosystems, such as mangroves. Understanding the response of mangroves to increased flooding stress under rising sea levels is crucial in the context of rapid global climate change. While previous studies have focused on the mangrove seedlings in controlled experiments, field studies on the response of mature mangrove trees to rising sea levels remain limited. This study examines the impact of flooding stress caused by tidal inlet narrowing on mangroves in a tropical microtidal estuarine lagoon on Hainan Island, China. We assessed the mortality of four common mangrove species: <em>Avicennia marina</em>, <em>Ceriops tagal</em>, <em>Rhizophora apiculata</em>, and <em>Scyphiphora hydrophyllacea</em>, and conducted an elevation gradient survey of <em>C. tagal</em> in two transects to evaluate how different mangrove species respond to flooding stress. The average tree heights of these species were 1.79 m, 1.16 m, 3.14 m, and 2.38 m, respectively, with survival probability after the flooding event of 42%, 12%, 89%, and 95%, respectively. We found that survival probability was positively related to tree height across the four species (P &lt; 0.001), and the site elevation of <em>C. tagal</em> is significantly positively associated with survival probability (P &lt; 0.001). Additionally, higher elevations correspond to better health in surviving <em>C. tagal</em>, indicated by more live leaves per twig and a higher leaf Fv/Fm ratio (P &lt; 0.001). These results suggest two mortality patterns in mangrove responses to the extreme flooding event: tree height-based and elevation-based mortality. The ordered mortality implies that mangrove vulnerability to sea-level rise is heterogeneous. These findings imply that future assessments of mangrove vulnerability should consider the fine-scale spatial distribution of species and the spatial heterogeneity of tree height.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109233"},"PeriodicalIF":2.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143593481","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 a multi-sensor satellite-based waterline method for rapid and extensive tidal flat topography mapping","authors":"Jingyo Lee ,&nbsp;Keunyong Kim ,&nbsp;Geun-Ho Kwak ,&nbsp;Won-Kyung Baek ,&nbsp;Yeongjae Jang ,&nbsp;Joo-Hyung Ryu","doi":"10.1016/j.ecss.2025.109235","DOIUrl":"10.1016/j.ecss.2025.109235","url":null,"abstract":"<div><div>Tidal flats are crucial ecosystems at the land-ocean interface. As the ecological value of tidal flats is emphasized, there is a need for precise tidal flat topographic maps as basic data for ecosystem protection and restoration planning. This study presents an optimized satellite-based waterline method for mapping the topographic changes in tidal flats, along the west coast of South Korea. We evaluated the accuracy and efficiency of digital elevation model (DEM) generated using multi-sensor satellite data (Landsat 8/9, Sentinel-2A/B, and Sentinel-1A) collected over a one-year period. The optimal data collection period was found to be 5 months, as extending the collection period beyond this did not result in a significant improvement in DEM quality, based on the mean absolute error (MAE) threshold. At a data collection period of 5 months, the Fusion DEM had an MAE of 25.6 cm, making it approximately 8.16% more accurate than the Optical DEM and about 49.56% more accurate than the SAR DEM. Our method accounts for rapid environmental changes due to climatic effects and human activities, providing a reliable model for monitoring vital tidal-flat ecosystems.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109235"},"PeriodicalIF":2.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon and mercury burial in mangrove soils across an anthropogenic gradient","authors":"Antoniwal A. Jatobá-Junior ,&nbsp;Vanessa Hatje ,&nbsp;Pere Masque ,&nbsp;Carlos Eduardo de Rezende ,&nbsp;Alex Cabral ,&nbsp;Yvonne Y.Y. Yau ,&nbsp;João Barreira ,&nbsp;Gloria M.S. Reithmaier ,&nbsp;Isaac R. Santos","doi":"10.1016/j.ecss.2025.109226","DOIUrl":"10.1016/j.ecss.2025.109226","url":null,"abstract":"<div><div>Mangrove forests are important sinks for atmospheric CO₂, resulting in organic-rich soils. However, increasing anthropogenic pressures may impact mangrove carbon sequestration. This study investigated organic carbon (OC) and mercury (Hg) stocks and accumulation rates in Brazilian mangroves under different degrees of anthropogenic influences. Organic carbon stocks and accumulation rates were 285 ± 33 Mg C ha⁻¹ and 128 ± 96 g C m⁻² yr⁻¹, respectively. The OC stocks were not significantly (<em>p</em> &gt; 0.05) different in the pristine and impacted mangroves. A high variability in OC accumulation rates across intertidal gradients underscores the importance of considering small-scale vertical variability when assessing blue carbon. The relationship between Hg and OC was stronger in impacted mangroves than the well-preserved sites. This study contributes to minimize uncertainties in South America OC stocks and accumulation rates and reveals links to Hg contamination. Understanding these dynamics enhances our comprehension of blue carbon ecosystems’ potential to store carbon and filter out pollution at the land-ocean interface.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109226"},"PeriodicalIF":2.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611614","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":"Development and characterization of novel microsatellite markers in the Manila clam parasitic arthropods, Nymphonella tapetis (Pycnogonida, Ascorhynchidae), using next-generation sequencing","authors":"Masanori Tamaoki ,&nbsp;Katsumasa Yamada ,&nbsp;Takeshi Tomiyama ,&nbsp;Katsumi Miyazaki","doi":"10.1016/j.ecss.2025.109230","DOIUrl":"10.1016/j.ecss.2025.109230","url":null,"abstract":"<div><div><em>Nymphonella tapetis</em> is a marine parasite that infects bivalves, including the Manila clam, and has caused significant fishery damage in Japan from 2007 to 2009. To detect the genetic diversity and analyze the population structures of this species, this study aimed to isolate microsatellite markers for <em>N. tapetis</em> using next-generation sequencing. A total of 1095 microsatellite regions were identified, and 36 primer sets were successfully amplified by PCR. Among these, 13 reproducible polymorphic loci were selected for the genetic analysis of <em>N. tapetis</em> individuals from Japan. The primers were specific to <em>N. tapetis</em> and showed high polymorphism, so they were used for population genetics studies. No significant deviation from Hardy-Weinberg equilibrium was observed at all these loci, indicating random mating in the population. No significant difference was observed in allele frequency at these loci was observed among three regional samples (Futtsu and Banzu in Chiba Prefecture, and Mikawa Bay in Aichi Prefecture). These showed that Futtsu, Banzu, and Mikawa Bay populations are genetically similar with one another, suggesting that they originated from the same ancestral population. However, allelic richness in the Futtsu tidal flat population was higher, possibly indicating that it as the source for the other populations.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109230"},"PeriodicalIF":2.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143601323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal and spatial distribution of trace metals and bacteria on beached plastics in the Adriatic sea","authors":"Ana Rapljenović ,&nbsp;Hana Fajković ,&nbsp;Damir Kapetanović ,&nbsp;Ivan Lakuš ,&nbsp;Kristina Pikelj ,&nbsp;Marija Purgar ,&nbsp;Vito Stančec ,&nbsp;Vlado Cuculić","doi":"10.1016/j.ecss.2025.109223","DOIUrl":"10.1016/j.ecss.2025.109223","url":null,"abstract":"<div><div>Marine plastic litter (MPL) is a significant threat to marine ecosystems, acting as a carrier for pollutants like trace metals (TM) and microbial communities whose distribution in intertidal zones’ sediment and seawater suggests potential environmental and health risk for coastal areas. The Adriatic Sea has been identified as a hotspot for MPL accumulation. This study is the first to investigate the interaction of MPL and sediment with TM and bacteria along the eastern Adriatic coast. MPL, sediment and seawater were collected from the intertidal zone of three beaches before and after the tourist season. A total of six different polymer types were detected, with polypropylene (PP) and polyethylene (PE) being the most prevalent. PP showed the greatest variability in metal adsorption, with Zn being the most adsorbed metal on all polymers and at all locations and seasons. Cd and Co exhibited the lowest amounts adsorbed. The amounts of adsorbed metals on plastics showed a similar pattern to the TM levels in seawater and sediment. The bacterial assemblages suggest that the distribution of certain bacterial genera on MPL and in the sediment was influenced by both location and season. The bacterial communities on plastics and in sediment showed different taxonomic compositions with the genera <em>Bacillus</em>, <em>Exiguobacterium</em> and <em>Psychrobacter</em> dominated on the plastic samples, while <em>Vibrio</em> species predominated in the sediment. This work elucidates the interaction and distribution of TM and bacteria between beached MPL and sediment in coastal environments of the Adriatic Sea and may contribute to similar studies in other coastal environments affected by MPL accumulation.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109223"},"PeriodicalIF":2.6,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563149","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":"Environmental factors shaping fish fauna structure in a temperate mesotidal estuary: Periodic insights from the Elbe estuary across four decades","authors":"Jesse Theilen ,&nbsp;Victoria Sarrazin ,&nbsp;Elena Hauten ,&nbsp;Raphael Koll ,&nbsp;Christian Möllmann ,&nbsp;Andrej Fabrizius ,&nbsp;Ralf Thiel","doi":"10.1016/j.ecss.2025.109208","DOIUrl":"10.1016/j.ecss.2025.109208","url":null,"abstract":"<div><div>Anthropogenic perturbations paired with increasing climatic changes, affect the biota composition and ecosystem services provided by highly productive estuarine transitional ecosystems worldwide. To determine driving forces affecting fish stocks in an estuarine habitat, we created a periodic time series over the last four decades (1984–2022) combining fish species compositions and densities with environmental conditions along the course of the temperate mesotidal Elbe estuary. We detected major changes in the species composition alongside with changes in life cycle guilds composition. With a relative increase of marine-estuarine opportunists and reduction of diadromous species, the fish fauna of the Elbe estuary has become more similar in guild structure compared to macro tidal estuaries in Europe. Improvements in water quality in the 1990s were accompanied by increased fish densities, specially smelt (<em>Osmerus eperlanus</em>), until 2010. Anthropogenic hydromorphological interventions, however, could have led to an increase in suspended particular matter until 2022, which combined with reduced river runoff and poor oxygen concentrations in summer months acted as poor environmental conditions for fishes in the estuary. Mean fish densities dropped by over 91 % compared to 2010 to an all-time low in the data. This reduction was primarily a result of a decline of the key species smelt in the system along with declines of twaite shad (<em>Alosa fallax</em>), flounder (<em>Platichthys flesus</em>), ruffe (<em>Gymnocephalus cernua</em>), common bream (<em>Abramis brama</em>) and other species. On the contrary, marine species herring (<em>Clupea harengus</em>) and whiting (<em>Merlangius merlangus</em>) densities increased. Overall, the time-series provides insight into the strong impact of human intervention that are however expected to lead to further stressors.</div></div>","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"318 ","pages":"Article 109208"},"PeriodicalIF":2.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum to ’Science and management achieving connectivity, coherence and equivalence to ensure the health of estuarine fish communities’ [Estuarine Coastal and Shelf Science 314 (2025) 1–11/109133]","authors":"Michael Elliott ,&nbsp;Alan K. Whitfield","doi":"10.1016/j.ecss.2025.109229","DOIUrl":"10.1016/j.ecss.2025.109229","url":null,"abstract":"","PeriodicalId":50497,"journal":{"name":"Estuarine Coastal and Shelf Science","volume":"317 ","pages":"Article 109229"},"PeriodicalIF":2.6,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143548524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}