Journal of Sea Research最新文献

{"title":"Beachface steepness modulates erosion but not recovery: Multi-decadal spatiotemporal shoreline evidence across 390 transects","authors":"Ahmet Durap","doi":"10.1016/j.seares.2025.102644","DOIUrl":"10.1016/j.seares.2025.102644","url":null,"abstract":"<div><div>Beachface steepness is widely thought to modulate storm cut, long-term shoreline trend, and post-event recovery, but multi-decadal, transect-scale evidence is scarce. In this study, it was quantified how beachface slope relates to (i) event-scale shoreline retreat, (ii) recovery time, and (iii) net multi-decadal shoreline movement. Two sites (IDs aus0032 and aus0033) comprising 390 cross-shore transects and 194,867 shoreline positions from 1987 to 05–22 to 2025-05-06. Mean slopes: 0.053 (aus0032) and 0.051 (aus0033); slope ranges: 0.045–0.080 and 0.030–0.185. Long-term linear trends span 0.13 → 0.94 m yr⁻¹ (all 87 transects accreting) at aus0032 and − 22.86 → +5.91 m yr⁻¹ at aus0033 (210 accreting, 91 eroding, 2 near-zero). Time series were resampled monthly and quality-controlled. Erosive events were flagged when month-to-month shoreline change ≤ −5 m. Recovery time was the months required to return to within 1 m of the pre-event level (pre-event window = 3 months; search window = 24 months). Associations between slope and (a) retreat magnitude and (b) recovery time were tested using Spearman rank correlation and OLS with robust (HC1) errors; slope–trend associations were also evaluated. Steeper beachfaces experienced smaller typical monthly retreats. Spearman ρ for slope vs median negative monthly change was 0.25 (<em>p</em> = 0.0206) at aus0032, 0.39 (<em>p</em> = 2.7 × 10⁻¹²) at aus0033, and 0.32 overall (<em>p</em> = 8.3 × 10⁻¹¹). OLS effect sizes indicate that a 0.01 increase in slope reduced (made less negative) the median retreat by ∼0.31 m (aus0032) and ∼ 0.21 m (aus0033). Severe retreats (5th percentile) also weakened with slope: ∼0.64 m and ∼ 0.23 m per 0.01 slope at aus0032 and aus0033, respectively (both <em>p</em> &lt; 0.02). Typical monthly negatives centred near −5.7 m (aus0032) and − 5.4 m (aus0033); 5th-percentile shocks were ∼ −16 m at both sites. Median recovery times were 5 months (aus0032; <em>n</em> = 8115 events) and 6 months (aus0033; <em>n</em> = 24,649), with 90th percentiles 17–18 months. Recovery time showed no robust monotonic relationship with slope (all |ρ| ≤ 0.07, <em>p</em> ≥ 0.15). Slope had little explanatory power for multi-decadal trend across all transects (Pearson r ≈ −0.08; Spearman ρ ≈ 0.10, <em>p</em> = 0.044 overall), with site-specific nuance (weak negative monotonic association at aus0032; none at aus0033). Beachface steepness buffers monthly-scale retreat but does not reliably predict decadal accretion/erosion or post-event recovery time. Half of events recover within ∼6 months, yet tail events can take &gt;1.5 years. Management should treat slope as a short-term resilience indicator, while decadal shoreline change and recovery pace likely depend more on alongshore sediment supply, nearshore morphology, and forcing histories.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102644"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variation in ecosystem services within biogenic reefs: The role of reef-building species under distinct hydrodynamic conditions","authors":"Rémi Dupont ,&nbsp;Alexia Semeraro ,&nbsp;Brecht Stechele ,&nbsp;Tomas Sterckx ,&nbsp;Gert Van Hoey ,&nbsp;Thomas Vandorpe ,&nbsp;Katrien Van der Biest","doi":"10.1016/j.seares.2025.102650","DOIUrl":"10.1016/j.seares.2025.102650","url":null,"abstract":"<div><div>To enhance the climate resilience of coastlines, measures are being implemented to protect and restore coastal ecosystems, such as biogenic reefs and dunes. These measures, known as Nature-based Solutions (NbS), provide protection against storms, coastal erosion, and flooding. They are also recognised for increasing biodiversity and delivering a range of ecosystem services (ES). This study investigated the ES provided by biogenic reefs composed of two reef-building species (<em>Mytilus edulis</em> and <em>Lanice conchilega</em>) under distinct hydrodynamic conditions. Three ES were assessed at two sites in the Belgian part of the North Sea: (1) coastal protection, (2) carbon sequestration, and (3) water quality regulation. The two sites have different hydrodynamic conditions due to their relative locations in relation to local sandbanks, making one site more exposed and the other more sheltered. The ES were quantified and monetised using in-situ measurements and literature data based on the SUstainable Marine Ecosystem Services (SUMES) model. The results suggest that the provision of ES in biogenic reefs is determined by multiple factors, including environmental conditions (e.g. hydrodynamics) and reef-building species. (1) Sediment accumulation was only observed under low hydrodynamic conditions, due to the higher settlement success of <em>M. edulis</em> and the presence of <em>L. conchilega</em>. (2) <em>M. edulis</em> “produces” carbon under both low and high hydrodynamic conditions, due to high respiration and biocalcification rates. However, low hydrodynamic conditions are more conducive to carbon burial, thus enhancing carbon sequestration. (3) <em>M. edulis</em> patches exhibited higher denitrification rates under low hydrodynamic conditions than under high hydrodynamic conditions or in <em>L. conchilega</em> patches, due to divergent macrobenthic functional diversity. In conclusion, the level of ES provision is determined by location and associated environmental conditions, as well as temporal and spatial variation in biogenic reefs and the physiological characteristics of reef builders. Therefore, both aspects need to be carefully considered when planning coastal protection measures and determining the provision of ES. Finally, when implementing NbS along high-energy coastlines, sheltered sites should be prioritised.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102650"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the impact of climate change on mean annual wave agitation and berth downtime at two major ports of the eastern Mediterranean Sea: Port of Piraeus, Greece and Port of Limassol, Cyprus","authors":"Michalis Chondros ,&nbsp;Andreas Papadimitriou ,&nbsp;Anastasios Metallinos ,&nbsp;Vasiliki Chalastani ,&nbsp;Conrad Landis ,&nbsp;Dimitris Spyrou ,&nbsp;Chrysi Laspidou ,&nbsp;Phoebe Koundouri ,&nbsp;Vasiliki Tsoukala","doi":"10.1016/j.seares.2025.102641","DOIUrl":"10.1016/j.seares.2025.102641","url":null,"abstract":"<div><div>This study assesses the impact of climate change on mean annual wave agitation and berth downtime at two major Eastern Mediterranean ports: Port of Piraeus, Greece, and Port of Limassol, Cyprus. Using high-fidelity numerical modeling under two climate scenarios (RCP4.5 and RCP8.5) up to 2100, changes in port basin wave agitation are evaluated, with and without accounting for Sea Level Rise (SLR). Results indicate that climate change will not uniformly increase wave agitation; outcomes vary depending on the adopted RCP scenario, time period, and berth location. Regarding mean annual berth downtime, more exposed berths in both ports are projected to face significant increases. The influence of SLR on downtime is inconsistent, especially at Port of Piraeus, where it may increase, decrease, or have negligible effects depending on location. These findings highlight the complex interplay between wave dynamics, local geomorphology, and port infrastructure, emphasizing the importance of port-specific climate resilience assessments.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102641"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting aquaculture resilience through biofloc-forming Bacteria: A comparative approach","authors":"Khadem Hussain Saeedi ,&nbsp;Manjulatha Chapara ,&nbsp;Jane Polyn P. Bejoc ,&nbsp;S.K.K.A. Perera","doi":"10.1016/j.seares.2025.102636","DOIUrl":"10.1016/j.seares.2025.102636","url":null,"abstract":"<div><div>Maintaining optimal water parameters in a biofloc technology system is essential for ensuring the healthy growth, development, and survival of cultured aquatic organisms. Fluctuations in these parameters can negatively impact their health, growth performance, and overall survival rate. This study compares the effects of two biofloc-producing bacteria<em>, Bacillus cereus</em> and <em>Klebsiella pneumoniae</em>, on water quality. The study was conducted under sterile laboratory conditions using water with 10 ppt salinity, and water quality parameters were assessed at 24-h intervals. Both bacterial strains were capable of forming bioflocs, though their performance varied over time. <em>Bacillus cereus</em> showed fluctuations in pH (6.5–8.9), whereas <em>Klebsiella pneumoniae</em> maintained relative stability (6–7.4). Both treatments elevated total alkalinity, but <em>K. pneumoniae</em> caused a sharp increase from 150 ppm to 310 ppm, differing from previous observations. <em>B. cereus</em> maintained stable total hardness and dissolved oxygen (2–5 mg/L) but caused elevated turbidity (819 NTU) after floc disintegration. Overall, bioflocs produced by <em>B. cereus</em> were more consistent and exhibited properties better suited for sustainable aquaculture under controlled conditions compared to those formed by <em>K. pneumoniae.</em></div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102636"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145363573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Optimized cleaning and centrifugation of Japanese precious corals for enhanced sclerite classification and chemical profiling” [Journal of Sea Research 208 (2025) 102639]","authors":"Beatrice Coda ,&nbsp;Asami Suzuki Mashio ,&nbsp;Tenyu Tamura ,&nbsp;Aya Mamorita ,&nbsp;Kuo Hong Wong ,&nbsp;Nozomu Iwasaki ,&nbsp;Hiroshi Hasegawa","doi":"10.1016/j.seares.2025.102648","DOIUrl":"10.1016/j.seares.2025.102648","url":null,"abstract":"","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102648"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Feeding selectivity and gametogenic cycle of Crassostrea madrasensis in relation to seasonal plankton and environmental variability in the southeast coast of the Bay of Bengal, Bangladesh","authors":"Khandakar Zakir Hossain ,&nbsp;Israt Jahan ,&nbsp;Md Nayeem Hossain ,&nbsp;Afshana Ferdous ,&nbsp;Md. Ramzan Ali ,&nbsp;Md Moshiur Rahman ,&nbsp;Mohammad Sadequr Rahman Khan ,&nbsp;Md Asaduzzaman","doi":"10.1016/j.seares.2025.102646","DOIUrl":"10.1016/j.seares.2025.102646","url":null,"abstract":"<div><div>The feeding behaviour of the Indian backwater oyster (<em>Crassostrea madrasensis</em>), a key estuarine filter-feeding bivalve native to the dynamic coastal waters of the Bay of Bengal, is intricately linked to a complex interplay of external environmental conditions and internal physiological processes. This study investigated the selective feeding behaviour of <em>C. madrasensis</em> over a complete annual cycle (July 2023–June 2024) along the southeast coast of Bangladesh, employing an integrated multivariate approach to elucidate how seasonal variations in plankton assemblages and environmental conditions influence feeding selectivity and the reproductive cycle of <em>C. madrasensis</em>. Various multivariate analyses revealed that water quality parameters, plankton abundance, and ingested gut plankton exhibited significant seasonal variability, driven by monsoonal hydrodynamics and nutrient influx. Environmental parameters such as temperature and turbidity were negatively associated, while chlorophyll-a and dissolved nutrients were positively correlated with both plankton availability and ingestion. Analysis of gut contents revealed that <em>C. madrasensis</em> selectively ingested specific plankton genera/groups, with clear seasonal positive selection for 17 genera/groups, including <em>Amphidinium</em> (17.5 % of total ingestion), <em>Skeletonema</em> (15.1 % of total ingestion), <em>Coscinodiscus</em> (12.0 % of total ingestion), and <em>Cyclotella</em> (10.8 % of total ingestion) comprised the highest proportions. Cluster analyses showed peak ingestion during the post-monsoon and late autumn months, coinciding with elevated chlorophyll-a concentrations and nutrient levels in the water column. The seasonal shifts in feeding selectivity corresponded with environmental changes and gonadal development phases, indicating an adaptive response to both external ecological factors and internal physiological cues. During the post-monsoon gametogenic phase, multivariate patterns suggest greater reliance on ingested food to support gamete maturation. In contrast, patterns observed during the pre-monsoon period are consistent with increased use of stored reserves, although continued feeding on smaller planktonic cells cannot be ruled out. These findings from these broad datasets provide valuable insights into the ecological adaptability of <em>C. madrasensis</em>, informing sustainable oyster farming strategies and enhancing resilience in coastal aquaculture systems in monsoon-influenced tropical environments like the Bay of Bengal.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102646"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145578720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Historical overview on the use of ballast water in shipping","authors":"Stephan Gollasch","doi":"10.1016/j.seares.2025.102649","DOIUrl":"10.1016/j.seares.2025.102649","url":null,"abstract":"<div><div>Since more than 100 years scientists assumed that ballast water of vessels is one of the major introduction pathways of non-indigenous species. Although this assumption was proven as true due to several ballast water sampling studies, it remained unclear for long who invented to use water as ballast in shipping. In the early days, and phasing out solid ballast in the 1850/60s, different ballasting ways were tried including to store water in bags, barrels and boxes to ballast vessels.</div><div>A comprehensive research of historical maritime literature and databases revealed the first naval architects who described the use of water as ballast.</div><div>Using ballast water, instead of solid ballast, was easy to handle and time-efficient and so-called wells filled with water were proposed to be used to ballast vessels. Those wells were created by properly sealed wooden vessel compartments and the entire patented arrangement was called “water ballast apparatus”.</div><div>However, with the development of double hulled iron ships with cellular compartments along the hull, ballast water tanks were invented and patented first by the British naval architect Ralph Rewcastle in 1827. Other key naval architects and engineers to develop this concept were listed and the first vessel on which dedicated ballast water tanks were installed was identified as the coal-carrier “Q.E.D.”, launched in 1844.</div><div><em>Policy implications.</em> This invention did not only result in major naval architecture improvements, but it prompted ballast water mediated species introductions by large.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102649"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical simulation of cold wave-induced surges in Zhejiang offshore from 2013 to 2023","authors":"Wenyao Ma ,&nbsp;Anzhou Cao ,&nbsp;Zheng Guo ,&nbsp;Jicai Zhang ,&nbsp;Jinbao Song","doi":"10.1016/j.seares.2025.102635","DOIUrl":"10.1016/j.seares.2025.102635","url":null,"abstract":"<div><div>Cold waves are a common meteorological phenomenon in the winter seasons, which often induce water surges that further threaten offshore safety. Zhejiang offshore is a typical region that frequently suffers from cold waves. Hence, understanding the characteristics and mechanisms of cold wave-induced surges in Zhejiang offshore is of great importance. Based on the Regional Ocean Modeling System, we simulate a total of 35 cold wave events and analyze their associated surges in Zhejiang offshore in the winter seasons from 2013 to 2023. The regional maximum surges induced by these cold wave events range between 0.23 and 1.02 m. According to the spatial pattern, the surges induced by the 35 cold wave events can be classified into three categories, which are characterized by high values in Hangzhou Bay, Taizhou-Wenzhou offshore, and nearly the entire coastal region of Zhejiang, respectively. Moreover, both the Kelvin wave and Ekman transport contribute to the surges induced by cold waves. Through a comparison with control experiments, it is found that the Kelvin wave is the dominant factor, which contributes more than 75 % to the surges, whereas the contribution of Ekman transport is less than 25 %.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102635"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145221935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to The EMSO-Azores deep-sea observatory: 15 years of multidisciplinary studies of the lucky strike hydrothermal system, from sub-seafloor to the water column [Journal of Sea Research 207 (2025) 102625]","authors":"M. Matabos ,&nbsp;M. Cannat ,&nbsp;V. Ballu ,&nbsp;T. Barreyre ,&nbsp;J. Blandin ,&nbsp;A. Castillo ,&nbsp;C. Cathalot ,&nbsp;V. Chavagnac ,&nbsp;N.C. Chu ,&nbsp;A. Colaço ,&nbsp;W. Crawford ,&nbsp;J. Escartin ,&nbsp;B. Ferron ,&nbsp;F. Fontaine ,&nbsp;L. Gautier ,&nbsp;A. Godfroy ,&nbsp;A. Laes-Huon ,&nbsp;N. Lanteri ,&nbsp;H. Leau ,&nbsp;J. Legrand ,&nbsp;P.M. Sarradin","doi":"10.1016/j.seares.2025.102632","DOIUrl":"10.1016/j.seares.2025.102632","url":null,"abstract":"","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102632"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Distribution of Ulva prolifera, the dominant species in green tides along the Jiangsu Province coast in the southern Yellow Sea, China” [J. Sea Res. 196 (2023) 102436]","authors":"Zhangyi Xia ,&nbsp;Xiaoli Cao ,&nbsp;Shuang Li ,&nbsp;Jiaxing Cao ,&nbsp;Yichao Tong ,&nbsp;Yuqing Sun ,&nbsp;Jinlin Liu ,&nbsp;Shuang Zhao ,&nbsp;Qianwen Cui ,&nbsp;Yinqing Zeng ,&nbsp;Zehua Chen ,&nbsp;Peimin He ,&nbsp;Jianheng Zhang","doi":"10.1016/j.seares.2025.102643","DOIUrl":"10.1016/j.seares.2025.102643","url":null,"abstract":"","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"208 ","pages":"Article 102643"},"PeriodicalIF":2.9,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145789910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}