Journal of Sea Research最新文献

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Benthic foraminifera as bioindicators of environmental impacts for coastal aquaculture 底栖有孔虫作为沿海水产养殖环境影响的生物指标
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-05-01 Epub Date: 2026-05-08 DOI: 10.1016/j.seares.2026.102706
Zhaoming Gao , Xiangyue Li , Xianjie Sui , Jiale Li , Meng Li , Xuanming Hu , Wei Han , Xiaoshang Ru , Shuaishuai Dong , Yanli Lei
{"title":"Benthic foraminifera as bioindicators of environmental impacts for coastal aquaculture","authors":"Zhaoming Gao ,&nbsp;Xiangyue Li ,&nbsp;Xianjie Sui ,&nbsp;Jiale Li ,&nbsp;Meng Li ,&nbsp;Xuanming Hu ,&nbsp;Wei Han ,&nbsp;Xiaoshang Ru ,&nbsp;Shuaishuai Dong ,&nbsp;Yanli Lei","doi":"10.1016/j.seares.2026.102706","DOIUrl":"10.1016/j.seares.2026.102706","url":null,"abstract":"<div><div>Intensive coastal aquaculture, while essential for global food security, creates significant environmental pressures on marine ecosystems worldwide. As a representative case study of this global challenge, we evaluated the use of benthic foraminifera as bioindicators to assess the environmental impact of a high-density mariculture area in the Shandong Peninsula, China, where systematic biomonitoring using these sensitive organisms has been lacking. Sediment samples were collected from 15 stations along a gradient from an aquaculture wastewater outfall to a control site. We analyzed environmental variables and living foraminiferal assemblages, which totaled 5319 specimens belonging to 23 species. Results showed a clear spatial gradient of decreasing organic carbon, nutrient loading, and hypoxia with increasing distance from the internal impact zone (IIZ) of aquaculture. Along the environmental gradient, the species composition of benthic foraminifera also showed responsive changes. In the IIZ, benthic foraminiferal community was dominated by tolerant <em>Ammonia</em> species (especially <em>A. aomoriensis</em>), while other species (e.g., <em>Cribrononion gnythosuturatum</em> and <em>Quinqueloculina seminula</em>) were dominant in the surround and control stations. Both species richness and diversity of benthic foraminifera gradually increased with greater distance from the outlet gate of aquaculture wastewater. Furthermore, we found <em>A. aomoriensis</em> in IIZ exhibited smaller shell sizes and higher deformity rates, which indicated the physiological stress from aquaculture activity. This study confirmed benthic foraminifera as sensitive indicators (community structure, diversity indices, morphological responses) for assessing the environmental impacts of coastal aquaculture.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"211 ","pages":"Article 102706"},"PeriodicalIF":2.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147945389","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}
引用次数: 0
Form roughness controls hydraulics on mussel banks in the Wadden Sea 形状粗糙度控制瓦登海贻贝滩的水力学
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-05-01 Epub Date: 2026-04-15 DOI: 10.1016/j.seares.2026.102699
Gianna Persichini, Knut Krämer, Marius Becker, Gabriel Herbst, Christian Winter
{"title":"Form roughness controls hydraulics on mussel banks in the Wadden Sea","authors":"Gianna Persichini,&nbsp;Knut Krämer,&nbsp;Marius Becker,&nbsp;Gabriel Herbst,&nbsp;Christian Winter","doi":"10.1016/j.seares.2026.102699","DOIUrl":"10.1016/j.seares.2026.102699","url":null,"abstract":"<div><div>The invasive Pacific oyster (<em>Magallana gigas</em>) has spread across the Wadden Sea, altering ecosystems and seabed characteristics. Like other ecosystem-engineers, oysters locally affect hydraulic properties of intertidal areas, particularly bed roughness, a key parameter for hydrodynamics and sediment transport. We compare the hydraulic effect of a sand bank and a neighbouring oyster bank using simultaneous Acoustic Doppler Current Profiler measurements. Velocity profiles reveal logarithmic boundary layers near the seabed from which we determine roughness lengths. For sand surfaces, hydraulic roughness length (z<sub>0</sub> = 0.014 mm) can be related to the grain roughness. The oyster bank exhibits larger roughness (z<sub>0</sub> = 1.84 mm), consistent with exposed shell parts. On both banks a secondary logarithmic region suggests additional influence from larger-scale morphology, providing the first in-situ measurements that directly capture large-scale form roughness of oyster bank morphology in a natural setting. We discuss how hydraulic roughness depends not only on substrate type but also on larger roughness elements, reinforcing the need to quantify both for understanding and modelling of hydraulics and transport in the presence of mussel banks that are changing under climate change.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"211 ","pages":"Article 102699"},"PeriodicalIF":2.9,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147945390","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}
引用次数: 0
Characterization of communities and habitats in submarine canyons. The case study of the Avilés canyon system, southern Bay of Biscay 海底峡谷群落和生境特征。比斯开湾南部avilsamys峡谷系统的个案研究
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2026-01-21 DOI: 10.1016/j.seares.2026.102674
Augusto Rodríguez-Basalo , Alberto Abad-Uribarren , Pilar Rios , Francisco Sánchez , Javier Cristobo , María Gómez-Ballesteros , Elena Prado
{"title":"Characterization of communities and habitats in submarine canyons. The case study of the Avilés canyon system, southern Bay of Biscay","authors":"Augusto Rodríguez-Basalo ,&nbsp;Alberto Abad-Uribarren ,&nbsp;Pilar Rios ,&nbsp;Francisco Sánchez ,&nbsp;Javier Cristobo ,&nbsp;María Gómez-Ballesteros ,&nbsp;Elena Prado","doi":"10.1016/j.seares.2026.102674","DOIUrl":"10.1016/j.seares.2026.102674","url":null,"abstract":"<div><div>To assess the presence of vulnerable marine ecosystems and map their spatial distribution for conservation purposes, we conducted high resolution studies of macrobenthic species aggregations and habitats in the southern Bay of Biscay. The study area covers three submarine canyons and a rocky outcrop, and was sampled using non-invasive photogrammetric techniques. To study the community structure, we analyzed the aggregations of sessile macrobenthic species using hierarchical cluster analysis based on Bray-Curtis similarity index. The main groups obtained were cold-water corals accompanied by hexactinellid sponges, brisingids and black corals; aggregations of demosponges; a sedimentary habitat dominated by pennatulids; and two lower bathyal habitats, one dominated by <em>Acanthogorgia armata</em> and <em>Thouarella (Euthouarella) grasshoffi</em>, and another by the foraminifera <em>Syringammina</em> aff. <em>fragilissima</em>. To obtain their spatial distribution, we developed two-part hurdle models for each group by combining binomial presence–absence predictions with negative binomial density models of key species, identified by a similarity percentage analysis. Results indicated high densities of cold-water corals along the canyon walls and in deep biogenic and geogenic zones; sponge aggregations on shallow hard substrates, and high density of pennatulids, mainly <em>Kophobelemnon stelliferum</em>, in sedimentary areas. These findings provide an essential baseline knowledge for the implementation of on ecosystem-based management plans and conservation strategies.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102674"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078792","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}
引用次数: 0
Determining the minimum thickness of isolation layers for subsea metal mining: An analytical study 确定海底金属开采隔离层的最小厚度:一项分析研究
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2026-02-02 DOI: 10.1016/j.seares.2026.102679
Qinglong Zhou, Jie Ai
{"title":"Determining the minimum thickness of isolation layers for subsea metal mining: An analytical study","authors":"Qinglong Zhou,&nbsp;Jie Ai","doi":"10.1016/j.seares.2026.102679","DOIUrl":"10.1016/j.seares.2026.102679","url":null,"abstract":"<div><div>Mining submarine metal deposits poses a significant threat of seawater inrush due to the complex hydrogeological environments of submarine deposits. Designing rational safety isolation layers to serve as a barrier against the intrusion of overlying seawater is critical. This work develops an integrated analytical framework to determine the minimum thickness of isolation layer, accounting for the dual effects of subsea mining-induced disturbances and wave loading. The beam theory was applied to derive an analytical solution for the height of the water-conducting fracture zone (WCFZ) in seabed mining, and the quantitative relationship among the height of the WCFZ, rock mass strength, and mining span was revealed. Based on the theoretical model of seabed dynamic response, this study analyzed differences in seabed liquefaction ranges under various liquefaction criteria, as well as the effects of different wave conditions and seabed parameters on the dynamic response of the seabed were analyzed. The liquefaction criterion integrating mean effective stress and excess pore water pressure is preferable for conservative isolation layer design. Low-permeability sandy sediments demonstrate higher sensitivity to wave loading and are the types of seabed that require special assessment in the design of submarine isolation layers. Additionally, a design method was proposed for determining the minimum thickness of isolation layers by integrating the height of WCFZ, surface sediment layer and the protective layer. A case study at the Sanshandao submarine gold mine reveals that under extreme wave conditions, the minimum safety isolation layer thickness is 125 m, corresponding to mineable ore bodies below −135 m elevation. Compared with the current actual mining design, the results indicate that the implemented isolation layer thickness incorporates a safety margin of approximately 30 m relative to the theoretical minimum.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102679"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189579","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}
引用次数: 0
Quantitative analysis of sea surface temperature warming prior to the summer monsoon onset over the Bay of Bengal 孟加拉湾夏季风爆发前海面温度变暖的定量分析
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2026-02-10 DOI: 10.1016/j.seares.2026.102681
Heng Xiao , Lanning Wang , Hongchao Qu , Yajuan Song
{"title":"Quantitative analysis of sea surface temperature warming prior to the summer monsoon onset over the Bay of Bengal","authors":"Heng Xiao ,&nbsp;Lanning Wang ,&nbsp;Hongchao Qu ,&nbsp;Yajuan Song","doi":"10.1016/j.seares.2026.102681","DOIUrl":"10.1016/j.seares.2026.102681","url":null,"abstract":"<div><div>The Bay of Bengal (BoB) serves as the primary region for the initial establishment of the Asian summer monsoon. Prior to monsoon onset, the sea surface temperature (SST) in the central BoB increases, potentially influenced by strong solar radiation absorption and shallow mixed layer depth, forming a spring warm pool. Its peak occurs approximately 2 pentads before the monsoon onset (denoted as −2P). A rapid warming period from −9P to −5P, characterized by a daily warming rate of 0.04 °C, is a key precursor signal for summer monsoon onset. Spring SST warming increases atmospheric specific humidity, promotes convective system development and decreases outgoing longwave radiation. This process serves as a crucial environmental factor in triggering the monsoon onset. The ability of climate model in simulating SST warming in the BoB is also evaluated. Multi-model analysis indicates that rapid SST warming occurs from −14P to −5P, with an earlier, longer and more intensive warming period than observations. It highlights systematic biases in both temporal duration and intensity of the pre-monsoon SST warming simulations. These findings increase the understanding of air-sea interaction processes before summer monsoon onset and provide new insights for improving climate model performance.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102681"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147397527","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}
引用次数: 0
A new approach for estimating larval settlement timing of a flatfish based on the shift in lapillus growth direction at settlement 基于定居时小鳞生长方向的比目鱼幼虫定居时间估算新方法
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2026-02-18 DOI: 10.1016/j.seares.2026.102687
Shinji Uehara , Tetsuo Yamada , Yuichiro Fujinami , Takeshi Tomiyama
{"title":"A new approach for estimating larval settlement timing of a flatfish based on the shift in lapillus growth direction at settlement","authors":"Shinji Uehara ,&nbsp;Tetsuo Yamada ,&nbsp;Yuichiro Fujinami ,&nbsp;Takeshi Tomiyama","doi":"10.1016/j.seares.2026.102687","DOIUrl":"10.1016/j.seares.2026.102687","url":null,"abstract":"<div><div>Flatfishes undergo a substantial transition from pelagic to benthic phases during settlement in their early life history. Estimating the timing of settlement is crucial for understanding post-settlement growth and survival. However, settlement checks have only been reported for a limited number of species. In this study, we propose a novel method for estimating settlement timing using Japanese flounder <em>Paralichthys olivaceus</em> as a model species. An ontogenetic change in the morphology of the left (ocular-side) lapillus was observed between 30 and 35 days post-hatching (dph) in hatchery-reared individuals, which coincided with settlement. Up to 30 dph, the lapillus exhibited a single maximum radius along a specific direction (early growth axis), whereas from 35 dph onward, the lapillus formed a projection at approximately 90° to the early growth axis. This morphological change was also observed in the lapillus of wild juveniles, and their settlement timing was estimated to be 35.5 ± 5.5 dph (mean ± SD). These findings suggest that projection formation in the lapillus can serve as a reliable benchmark for settlement in flatfishes.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102687"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147397528","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}
引用次数: 0
A coupled Swin transformer-LSTM network for high-resolution ocean wave forecasting: A reanalysis-driven skill assessment in the Chinese marginal seas 用于高分辨率海浪预报的耦合Swin变压器- lstm网络:中国边缘海域再分析驱动的技能评估
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2026-01-13 DOI: 10.1016/j.seares.2026.102670
Yongqiang Liu , Delei Li , Xiang Gong , Jianlong Feng , Hailong Liu , Jifeng Qi , Baoshu Yin
{"title":"A coupled Swin transformer-LSTM network for high-resolution ocean wave forecasting: A reanalysis-driven skill assessment in the Chinese marginal seas","authors":"Yongqiang Liu ,&nbsp;Delei Li ,&nbsp;Xiang Gong ,&nbsp;Jianlong Feng ,&nbsp;Hailong Liu ,&nbsp;Jifeng Qi ,&nbsp;Baoshu Yin","doi":"10.1016/j.seares.2026.102670","DOIUrl":"10.1016/j.seares.2026.102670","url":null,"abstract":"<div><div>Accurate wave forecasting is essential for maritime safety and provides crucial scientific guidance for coastal operations and planning. Most artificial intelligence-based wave forecast models were conducted at coarse resolutions, e.g., 0.25° or 0.5° spatial resolution, and struggled to maintain high forecasting accuracy for extended periods. Here, we introduce the coupled Swin Transformer-LSTM network (SwinLSTM), a hybrid architecture designed to make a spatiotemporal forecast of significant wave height (SWH) at a 0.1-degree resolution over 72-h lead-time in the Bohai Sea, Yellow Sea, and East China Sea. In this study, both historical and lead-time wind fields are taken from the ERA5 reanalysis; therefore, the reported skill reflects a reanalysis-driven (hindcast-style) evaluation that provides an upper-bound estimate under near-perfect wind forcing. The SwinLSTM architecture effectively captures spatial dependencies, simultaneously extracting both long-term and short-term spatiotemporal dependencies in ocean wave dynamics for efficient two-dimensional spatial forecasting. Through sensitivity experiments, the optimal configuration was determined, with historical wind, SWH, topography, and ERA5 reanalysis future wind (used here as a proxy forcing for lead-time prediction) identified as the optimal input combinations using a 6-h encoding time step. Based on comprehensive model evaluation with this optimal configuration, our results demonstrate that for forecast horizons of 1-, 6-, 12-, 24-, 48-, and 72-h, the spatially averaged root mean square error (RMSE) values are 0.113, 0.121, 0.155, 0.190, 0.221, and 0.232 m, respectively, with corresponding spatial correlation coefficients (CC) of 0.989, 0.987, 0.980, 0.972, 0.963, and 0.960. For forecast lead times longer than 12-h, comparisons show that our model is among the best ones in AI-based wave models, showing high prediction accuracy while maintaining satisfactory stability and robustness across different temporal scales. The wave forecast capability and robustness were validated under conditions of cold air outbreaks and typhoon events, demonstrating the model's ability to capture the spatial distribution and temporal evolution of extreme wave events. These findings demonstrate the potential for high-resolution SWH forecasting with enhanced accuracy and efficiency.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102670"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038709","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}
引用次数: 0
CatBoost-based prediction of suspended sediment concentration in the Pearl River estuary: Driving mechanisms unraveled via SHAP analysis 基于catboost的珠江口悬沙浓度预测:通过SHAP分析揭示驱动机制
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2026-01-07 DOI: 10.1016/j.seares.2026.102668
Xiaofei Cheng , Yunzhi Chen , Yang Zhang , Wei Xie , Liang Du , Dan Wu , Rui Xiao , Guoxuan Ji
{"title":"CatBoost-based prediction of suspended sediment concentration in the Pearl River estuary: Driving mechanisms unraveled via SHAP analysis","authors":"Xiaofei Cheng ,&nbsp;Yunzhi Chen ,&nbsp;Yang Zhang ,&nbsp;Wei Xie ,&nbsp;Liang Du ,&nbsp;Dan Wu ,&nbsp;Rui Xiao ,&nbsp;Guoxuan Ji","doi":"10.1016/j.seares.2026.102668","DOIUrl":"10.1016/j.seares.2026.102668","url":null,"abstract":"<div><div>This study focuses on predicting suspended sediment concentration (SSC) and analyzing its influencing factors in the Pearl River Estuary (Zhuhai, China) using in-situ hydrological data collected from October 2022 to May 2023. Nine mainstream machine learning models were compared, with the Categorical Boosting (CatBoost) model identified as the optimal for SSC prediction. CatBoost achieved high accuracy, with a Pearson Correlation Coefficient (R) of 0.76, Root Mean Squared Error (RMSE) of 3.76 mg/L, Mean Absolute Error (MAE) of 2.47 mg/L, Median Absolute Error (MedAE) of 2.04 mg/L, and Mean Squared Logarithmic Error (MSLE) of 0.198 mg/L, outperforming models such as Light Gradient Boosting Machine (LGBM), Ramdom Forest (RF), and Extreme Gradient Boosting (XGBoost). Stratified analysis showed it performed well for low-to-medium SSC (≤30 mg/L) but had limited accuracy for high SSC (&gt;30 mg/L). SHapley Additive exPlanations (SHAP) analysis revealed that significant wave height (Hs) and surface current speed (SCS) were the dominant drivers, with Hs exerting the most substantial influence. Both factors exhibited a pronounced positive regulatory effect on SSC. Further tests on variable combinations indicated that the simplified input mode (Hs + SCS) alone was sufficient to achieve accurate SSC predictions, with no significant improvement from adding more variables. This study demonstrates the effectiveness of CatBoost in SSC prediction and highlights key influencing factors via SHAP, providing a robust framework for precise SSC forecasting in estuarine environments.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102668"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145929186","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}
引用次数: 0
Long-term changes in the subtidal macrozoobenthos of the western Dutch Wadden Sea 荷兰西部瓦登海潮下大型底栖动物的长期变化
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2025-12-30 DOI: 10.1016/j.seares.2025.102666
Andreas M. Waser , Rob Dekker , Jan Drent , Jaap van der Meer
{"title":"Long-term changes in the subtidal macrozoobenthos of the western Dutch Wadden Sea","authors":"Andreas M. Waser ,&nbsp;Rob Dekker ,&nbsp;Jan Drent ,&nbsp;Jaap van der Meer","doi":"10.1016/j.seares.2025.102666","DOIUrl":"10.1016/j.seares.2025.102666","url":null,"abstract":"<div><div>The comparison of two large-scale surveys (1981/82 and 2008), combined with annual monitoring of the subtidal macrofauna in the western Dutch Wadden Sea from 1990 to 2018, revealed pronounced temporal changes in macrobenthic community composition over the past four decades. In the early 1980s, mussels (<em>Mytilus edulis</em>) dominated the macrobenthic biomass, but their contribution had strongly declined by 2008. This decline was evident both on natural mussel beds and on culture plots, pointing to a widespread reduction in mussel biomass across the subtidal western Dutch Wadden Sea. Likewise, the biomass of the bivalves <em>Macoma balthica</em> and <em>Cerastoderma edule</em> also declined strongly in the course of the study period. In contrast, biomass of several non-native species, such as the bivalves <em>Mya arenaria</em> and <em>Ensis leei</em>, increased strongly in the same period and became the dominating species. Other invaders, such as the polychaete <em>Marenzelleria viridis</em>, experienced considerable fluctuations during the early 2000s. Typical for invasion trajectories, it increased dramatically to the dominating macrozoobenthos species, but soon after decreased to marginal levels (boom and bust dynamics). Despite the large changes in the species composition there were very little changes in the distribution of biomass among the different feeding and taxonomic groups. This study shows that the macrozoobenthos of the subtidal western Dutch Wadden is prone to considerable temporal fluctuations. As a result of species introductions, the benthic community has changed from a predominantly native species dominated community to one where introduced species make up a prominent part of the community.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102666"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904156","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}
引用次数: 0
Impact of typhoon landfall time on seawall breach and flood evolution based on the case of typhoon Maria (1808) 台风登陆时间对海堤决口及洪水演变的影响——以台风玛丽亚(1808)为例
IF 2.9 4区 地球科学
Journal of Sea Research Pub Date : 2026-03-01 Epub Date: 2026-01-23 DOI: 10.1016/j.seares.2026.102673
Cheng Chen , Peifeng Luo , Qu Wang , Weifang Ruan , Zhipeng Zhu , Tingyu Wang
{"title":"Impact of typhoon landfall time on seawall breach and flood evolution based on the case of typhoon Maria (1808)","authors":"Cheng Chen ,&nbsp;Peifeng Luo ,&nbsp;Qu Wang ,&nbsp;Weifang Ruan ,&nbsp;Zhipeng Zhu ,&nbsp;Tingyu Wang","doi":"10.1016/j.seares.2026.102673","DOIUrl":"10.1016/j.seares.2026.102673","url":null,"abstract":"<div><div>This study presents a case study of Typhoon Maria (2018) affecting Yacheng Town, Xiapu County, Fujian Province, China, to investigate how typhoon landfall timing relative to the astronomical tide influences seawall breaching and flood evolution under storm surge conditions. The study employs the MIKE 21 model, SWAN model, and DLbreach model to simulate the breach process and flood inundation under different typhoon landfall timings. The findings indicate that the storm surge effect intensifies with earlier typhoon landfall, and the typhoon waves are positively correlated with the water level. Additionally, adjusting the typhoon landfall time by three hours earlier or later significantly reduces the flood inundation area, but adjusting it by one hour has little effect. The quantitative results are specific to this case study of Typhoon Maria at Yacheng Town. These findings provide a crucial scientific basis and reference for the formulation of disaster prevention and mitigation measures for seawalls and the design of coastal engineering projects.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"210 ","pages":"Article 102673"},"PeriodicalIF":2.9,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078791","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}
引用次数: 0
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