Journal of Sea Research最新文献

{"title":"Tidally driven porewater exchange and the key affecting factors in mangroves in the Pearl River Estuary, China","authors":"Ziying He ,&nbsp;Lili Zhao ,&nbsp;Xueyin Zhuang ,&nbsp;Ying Zeng ,&nbsp;Bowen Hu ,&nbsp;Xiaoli Yu ,&nbsp;Jin Liang ,&nbsp;Yisheng Peng ,&nbsp;Zhonghan Chen","doi":"10.1016/j.seares.2025.102572","DOIUrl":"10.1016/j.seares.2025.102572","url":null,"abstract":"<div><div>Mangroves are important ecosystems that mediate the movement of organic matter and nutrients from land to the ocean via tidally driven porewater exchange. In the present study, we quantified porewater exchange rates in three 12-year-old <em>Sonneratia apetala</em> plantations distributed along the Pearl River Estuary in southern China by monitoring ²²²Rn in situ during the wet and dry seasons and by measuring the correlations between the porewater exchange rates and the mangrove plantation conditions. The ²²²Rn-derived porewater exchange rates were 385.1–1286.0 Bq m⁻² h⁻¹ in the wet season and 380.6–498.4 Bq m⁻² h⁻¹ in the dry season, which is higher than previous studies. Therefore, it is necessary to sample and monitor within the mangrove forests, or the porewater exchange should be underestimated because of the ignored richer crab burrows. Sediment pH, salinity, and surface water pH had significant relationships with the porewater exchange rate. These results revealed that porewater exchange had seasonal and spatial variation in mangroves and that pH and salinity were the major regulators of mangrove porewater physical exchange.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"204 ","pages":"Article 102572"},"PeriodicalIF":2.1,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Spatial and temporal changes of water environmental factors and water quality assessment in coastal waters of Jiangsu Province","authors":"Zhihao Tang,&nbsp;Yuhan Cao,&nbsp;Qingfeng Jiang","doi":"10.1016/j.seares.2025.102570","DOIUrl":"10.1016/j.seares.2025.102570","url":null,"abstract":"<div><div>This study aims to explore the temporal and spatial changes in water environmental factors and seawater quality in the near-shore waters of Jiangsu Province. From 2017 to 2023, the single-factor evaluation method and the comprehensive pollution index evaluation method were employed to assess water environmental factors and water quality, and the correlations between water ecological factors were analyzed. The results indicated that the overall levels of dissolved oxygen (DO), chemical oxygen demand (COD), and petroleum were satisfactory. The pollution levels of the main pollutants, inorganic nitrogen (IN) and reactive phosphate (RP), showed a downward trend, and the overall water quality improved after 2019. There was a significant positive correlation between IN and RP, suggesting they might share the same source. In terms of spatial distribution, each factor exhibited certain regularities: DO was higher in the north than in the south; the pH value was higher in the north and south than in the central area; the concentrations of IN and petroleum were higher near the shore; COD was higher in the northern and near-shore regions; and RP was more concentrated in the central and near-shore areas. Moreover, research revealed that seawater quality was influenced by various factors, including natural and human-induced ones. As a unique phenomenon in the Yellow Sea waters, green tides had a disruptive effect on the content changes of water quality factors during their formation and disappearance in different years, particularly on DO. Special events such as coastal industries, the COVID-19 pandemic, and marine projects affected the discharge and input of pollutants. Policies implemented in different periods were crucial for optimizing water quality.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"204 ","pages":"Article 102570"},"PeriodicalIF":2.1,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"How the invasive algae Rugulopteryx okamurae affect coastal biodiversity? Insights from coastal fish communities of gran Canaria (NE Atlantic Ocean)","authors":"Xavier Bachot,&nbsp;Rodrigo Riera","doi":"10.1016/j.seares.2025.102568","DOIUrl":"10.1016/j.seares.2025.102568","url":null,"abstract":"<div><div>Biological invasions present significant threats to global biodiversity and ecosystem functioning. The introduction of invasive species can lead to ecosystem homogenization, altering community dynamics and negatively impacting native species and habitats. <em>Rugulopteryx okamurae,</em> a brown seaweed native to the Northwest Pacific, has rapidly invaded marine ecosystems in Europe, transforming coastal habitats. This study examines the impact of <em>R. okamurae</em> on fish communities across different zones of Gran Canaria, with a particular focus on the invasion gradient. We observed significant variations in fish species abundance and richness across sites, with a noticeable trend towards reduced diversity and a higher prevalence of opportunistic species in areas heavily invaded by <em>R. okamurae</em>. The invasion gradient, rather than typical edge effects, appeared to play a more substantial role in shaping community structure, suggesting that the pervasive spread of <em>R. okamurae</em> leads to habitat homogenization. Ongoing monitoring and adaptive management strategies are crucial to fully understand and mitigate the impacts of <em>R. okamurae</em> on marine biodiversity in Gran Canaria.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"204 ","pages":"Article 102568"},"PeriodicalIF":2.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143235053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"The impacts of natural marine disasters on shipping industry in China: An event study","authors":"Fan Zeng,&nbsp;Chuan Pang,&nbsp;Huajun Tang","doi":"10.1016/j.seares.2025.102569","DOIUrl":"10.1016/j.seares.2025.102569","url":null,"abstract":"<div><div>Currently, global warming leads to a notable increase in natural marine disasters. It is imperative that the academic community undertake a quantitative assessment of the impacts of natural marine disasters on shipping industry in China. The event study revealed that natural marine disasters lead to negative abnormal trading volume and abnormal stock returns for the Chinese shipping industry. Moreover, the findings of the regression analysis indicated that abnormal trading volume was positively related to abnormal stock return. Overall, natural marine disasters may lower investors' expectation on the development of the shipping firms, which would adversely affect shipping firms' market value. The findings of our paper highlighted the importance of disaster management in the shipping industry, which suggests managers in shipping industry should improve disaster management. Our research contributes to the research area of the economic effects of natural disasters and the effects of uncertainty on firms' investments.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"204 ","pages":"Article 102569"},"PeriodicalIF":2.1,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143386872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"The distribution and characteristics of suspended particulate matter in the Palau-Caroline seamount area of the western tropical Pacific Ocean","authors":"Lianhua He ,&nbsp;Yanguang Liu ,&nbsp;Gang Yang ,&nbsp;Sen Shan ,&nbsp;Aimei Zhu ,&nbsp;Jingjing Gao","doi":"10.1016/j.seares.2024.102560","DOIUrl":"10.1016/j.seares.2024.102560","url":null,"abstract":"<div><div>Suspended particulate matter (SPM) plays an important biogeochemical role in aquatic systems, and assessing SPM spatial trends during the current climate change period is important. In the autumn of 2018, seawater samples were collected from depths of 1, 20, 50, 100and 200 m in the water column at 62 stations within the Palau-Caroline seamount area in the western tropical Pacific Ocean. The SPM concentration was measured to assess spatial variability. The particulate nitrogen (PN) concentration, particulate organic carbon (POC) concentration, and δ¹³C_POC were measured at 30 stations to assess spatial variability and the source of the suspended particulate organic matter (POM). The SPM concentration ranged from 0 to 1.18 mg/L, with an average value of 0.18 ± 0.20 mg/L, which is consistent with the results of previous studies in the ocean. Marked variation was observed in the SPM distribution. High SPM concentrations were observed around the seamount area, indicating that the seamount significantly influenced the distribution of the SPM. The POC concentrations decreased with depth, whereas the PN concentrations did not exhibit a clear distribution pattern. This difference in distribution suggested that the sources, cycling pathways and other controlling geochemical processes differed between POC and PN. The C/N ratios were notably low, ranging from 0.4 to 8.3, with an average of 2.0 ± 1.6. The δ¹³C_POC values ranged from −27.7 ‰ to −23.4 ‰, showing clear stratification with higher (less negative) values in the upper water column. The distribution characteristics of POC, PN, δ¹³C_POC, and the C/N ratio indicate that small phytoplankton may influence the POM characteristics of the upper water column. The POM collected in the study area appears to be derived mainly from in situ biological production.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"203 ","pages":"Article 102560"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Decadal trends in macrobenthic communities in offshore wind farms: Disentangling turbine and climate effects","authors":"C. Jammar ,&nbsp;A. Reynés-Cardona ,&nbsp;J. Vanaverbeke ,&nbsp;N. Lefaible ,&nbsp;T. Moens ,&nbsp;S. Degraer ,&nbsp;U. Braeckman","doi":"10.1016/j.seares.2024.102557","DOIUrl":"10.1016/j.seares.2024.102557","url":null,"abstract":"<div><div>We present results of a study covering 13 years of data (2008–2020), investigating for the first time the combined impacts of offshore windfarm (OWF) turbine-related and climate-related variables on soft-sediment macrobenthic communities in the Southern North Sea, focusing on two Belgian OWFs, Belwind and C-Power. We hypothesized that both turbine presence alongside climate change would affect macrobenthos in the long-term. Our analysis revealed that climate variables, particularly sea surface temperature (SST) influenced macrobenthos abundance, species richness and diversity. Species richness was additionally affected by the North Atlantic Oscillation (NAO). While most community indices increased with rising SST, diversity declined with higher temperatures. Our analysis supported that the already known short-term (max. 3 years) turbine-related impacts are consistent through time (13 years). Sediments near turbines and in deeper waters were richer in organic matter, characterized by finer sand, and supported more enriched soft-sediment communities compared to locations further away. A transition from the originally prevailing <em>Nephtys cirrosa</em> community towards a more diverse macrobenthic community was observed near the turbines. Our study emphasizes the need for long-term studies and the importance of distinguishing turbine presence from climate change effects when assessing the impacts of OWFs on marine ecosystems.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"203 ","pages":"Article 102557"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Effects of western boundary currents and sea surface temperature anomalies on interannual variability of chub mackerel abundance in the Northwest Pacific","authors":"Jiasheng Li ,&nbsp;Weifeng Zhou ,&nbsp;Yang Dai ,&nbsp;Fenghua Tang ,&nbsp;Yumei Wu ,&nbsp;Heng Zhang ,&nbsp;Xiumei Fan ,&nbsp;Xuesen Cui","doi":"10.1016/j.seares.2024.102561","DOIUrl":"10.1016/j.seares.2024.102561","url":null,"abstract":"<div><div>The abundance of chub mackerel (<em>Scomber japonicus</em>) in the Northwest Pacific has undergone significant changes in recent decades. To investigate the long-term and short-term impacts of environmental factors on the abundance of chub mackerel, Kuroshio volume transport in summer and winter, the Oyashio area, the Oyashio southern limit, and the Sea Surface Temperature Anomaly (SSTA), were selected to construct the ARDL-ECM model based on the Autoregression Distributed Lag (ARDL) method for 3 age groups with resource abundance as the response variable. The results showed that in short term effects there is a positive correlation between Kuroshio intensity and the chub mackerel abundance in winter, but a negative correlation in summer. Oyashio area can impact the fish abundance under 2 years old significantly (<em>p</em> &lt; 0.001) and the change of Oyashio sourth limit only has a significant impact on the abundance of 0-age fish (p &lt; 0.001). In the long-term relationship, Kuroshio significantly influences the abundance of fish aged 3 years and older (<em>p</em> &lt; 0.001). SSTA had a significant impact on the abundance of all 3 age groups (<em>p</em> &lt; 0.05), while Oyashio area may influence the fish abundance under 2 years old (p &lt; 0.05). Furthermore, Oyashio south limit was found to affect the abundance of fish aged over 1 year (<em>p</em> &lt; 0.01). SSTA can increase the abundance in both short term (<em>p</em> &lt; 0.001) and long term (p &lt; 0.001).The findings of this research may enhance our understanding of the variations in chub mackerel abundance in the Northwest Pacific.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"203 ","pages":"Article 102561"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Social-ecological system approach relevant for modelling the ecological niche of a mangrove gastropod at small regional scale","authors":"Rémi Brosse ,&nbsp;Claire Golléty ,&nbsp;Esméralda Longépée ,&nbsp;Lucie Dupont ,&nbsp;François-Xavier Lamure Tardieu ,&nbsp;Yann Mercky ,&nbsp;Gauthier Schaal","doi":"10.1016/j.seares.2025.102567","DOIUrl":"10.1016/j.seares.2025.102567","url":null,"abstract":"<div><div>The gastropod <em>Terebralia palustris</em> is found in mangroves from the Indo-Pacific, where it plays important ecological roles and is fished by humans. As such, it reflects interactions occurring within the socio-ecosystem, although information regarding its regional distribution and ecological niche is uneven. The present study aimed at defining the relative importance of factors of the mangrove socio-ecological system (MSES) on the realized niche of <em>T. palustris</em> at the regional scale. We studied its distribution at the scale of Mayotte Island (France, Indian Ocean), including local ecological knowledge and environmental memory held by population. To this end, a survey campaign of the 29 mangroves of Mayotte allowed mapping its occurrence and correlating the spatial pattern to factors of the MSES related to three dimensions of the niche (accessibility, abiotic, and biotic) pertaining to both societal and ecological components. Questionnaire interviews revealed both past presence and current presence undetected by the survey campaign. At the scale of Mayotte, the gastropod is found on large and deep mangroves, distant from the sea by a deep central and external mangrove, where <em>Avicennia marina</em> is not the only mangrove tree species and the canopy is relatively opened, at the bottom of watersheds holding large urban areas. Our study showed that dealing with both ecosystemic and societal subsystems and their involvement in each dimension of the niche concept is a promising way of understanding the drivers of species distribution in anthropized systems.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"204 ","pages":"Article 102567"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143235054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Traits without boundaries: The environmental influence on biological traits across an intertidal region","authors":"Natanah M.C. Gusha ,&nbsp;Christopher D. McQuaid","doi":"10.1016/j.seares.2024.102559","DOIUrl":"10.1016/j.seares.2024.102559","url":null,"abstract":"<div><div>Trait-based methods can present better alternatives to species-centric methods when the objective is to understand the drivers of species distribution patterns across macro-spatial scales. We employed a trait-based approach to understand benthic macroinvertebrate species distributions along the coastline of South Africa, hypothesising that the operation of selection on species' traits would produce different distributional results from the already known patterns based on taxonomic identity. We selected eight lifestyle and reproduction trait categories for 150 intertidal macroinvertebrates from 52 sites spanning three main bioregions (East, South, and West) and two transition zones (South-west and South-east) across c. 3025 km of the South African coast. We used satellite derived near-shore sea surface temperature (SST), chlorophyll-<em>a</em> data estimates and site location to characterise environmental conditions that may influence intertidal species and traits distribution<em>.</em> An RLQ analysis indicated that intertidal species trait distribution did not conform to the biogeographic patterns identified using a taxonomic approach. Further, a combined fourth corner analysis further revealed strong significant interactions of four of the eight traits (reproductive type, body form and feeding type) with environment parameters (longitude, SST and chl-<em>a</em>), plus weakly significant effects of latitude. Two major currents dominate nearshore waters, the cool, eutrophic Benguela on the west and the warm, oligotrophic Agulhas on the east and south, yet trait distribution grouped cool (west coast) and warm (south coast) temperate sites separately from subtropical eastern sites rather than aligning with the three main bioregions defined by species taxonomic identity. These results support the habitat templet theory, suggesting that environmental influences on species distributions operates through their effects on species traits, with chl-<em>a</em>/nutrient availability a key determinant of trait distributions. This results in a transition in species' traits from warm, oligotrophic to cool eutrophic conditions. This coarse transition between two oceanic regimes is further refined by species with varying trait combinations colonising from either the Indian and Atlantic oceans, resulting in the bioregions defined by species identity.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"203 ","pages":"Article 102559"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143168304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Epibenthic communities' structure in St. Pierre Bank revealed by underwater video","authors":"Pauline Boët,&nbsp;Sonia Méhault,&nbsp;Julien Simon,&nbsp;Marie Morfin,&nbsp;Dorothée Kopp","doi":"10.1016/j.seares.2025.102562","DOIUrl":"10.1016/j.seares.2025.102562","url":null,"abstract":"<div><div>Given the significant ecosystem services provided by benthic communities, monitoring their biodiversity enable to better understand how global changes would affect their structure in a context of biodiversity loss. Using underwater video transect, we characterize alpha and beta diversity of epibenthic communities, their structure and forcing factors in St. Pierre Bank; an area where marine benthos is still poorly documented. Video monitoring enables the detection of 74 different taxa belonging to eight phyla. Results highlighted three spatial entities of benthic assemblages distributed along a bathymetric gradient and primarily influenced by sedimentary types. In the southern and western area, rhodoliths beds substrate shelters the majority of echinoderms. The southern region was dominated by sea cucumber <em>Cucumaria frondosa</em>, whereas in the western area, brittle stars, and the green sea urchin <em>Strongylocentrotus droebachiensis</em> were dominant. Fishing activity was concentrated in the south, due to the presence of exploited sea cucumber. In contrast, the northern region featured patchy fine and soft substrates with a preponderance of giant scallop <em>Placopecten magellanicus</em> and sand dollar <em>Echinarachnius parma</em>. In addition to the contribution of environmental factors to the distribution of communities, this study highlights the complexity of several biotic interactions at the origin of these assemblages.</div></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":"203 ","pages":"Article 102562"},"PeriodicalIF":2.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143167814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}