Marine environmental research最新文献

{"title":"Corrigendum to “Assessing juvenile swordfish (Xiphias gladius) diet as an indicator of marine ecosystem changes in the northwestern Mediterranean Sea” [Mar. Environ. Res. 192 (2023) 106190]","authors":"Elena Fernández-Corredor , Luca Francotte , Ilaria Martino , Fernando Á. Fernández-Álvarez , Salvador García-Barcelona , David Macías , Marta Coll , Francisco Ramírez , Joan Navarro , Joan Giménez","doi":"10.1016/j.marenvres.2025.107052","DOIUrl":"10.1016/j.marenvres.2025.107052","url":null,"abstract":"","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"206 ","pages":"Article 107052"},"PeriodicalIF":3.0,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143572921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-methane hydrocarbons in the continental seas of China: Spatiotemporal variability, controlling factors, and environmental effects","authors":"Li-Min Zhou ,&nbsp;Jian-long Li ,&nbsp;Hai-Jian Su ,&nbsp;Gao-Bin Xu ,&nbsp;Jian Wang ,&nbsp;Hong-Hai Zhang","doi":"10.1016/j.marenvres.2025.107059","DOIUrl":"10.1016/j.marenvres.2025.107059","url":null,"abstract":"<div><div>Coastal regions, as hotspots for non-methane hydrocarbons (NMHCs) emissions, warrant more consideration for their vital impacts on marine climate regulation. This study examined the spatiotemporal distributions, emissions, and environmental effects of NMHCs in the Bohai Sea (BS) and Yellow Sea (YS) during summer and winter. The NMHC concentrations show clear spatial and seasonal variability, with higher levels observed in summer. The horizontal distributions of isoprene closely mirrored chlorophyll-<em>a</em> (Chl-<em>a</em>), suggesting a strong linkage to phytoplankton activities, while other NMHCs appeared to be associated with photochemical processes. Atmospheric alkane concentrations declined from inshore regions to offshore regions indicating the significant input of terrestrial sources, whereas alkenes were predominantly emitted from the ocean. The NMHC sea-to-air fluxes ranged from 11.8 to 306 nmol m⁻² d⁻¹, underscoring the importance of coastal regions as major sources of atmospheric NMHCs. These emissions significantly promote the formation of secondary organic aerosol (SOA) and ozone (O₃), thereby exerting a vital impact on the marine environment.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107059"},"PeriodicalIF":3.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pollution characteristics, spatial variation, and ecological risks of phthalate esters in seawater and sediment from nine estuaries and their adjacent areas of Hainan Island, China","authors":"Jiashun Shen ,&nbsp;Bing Cai ,&nbsp;Yanyu Zhou ,&nbsp;Narainrit Chinfak ,&nbsp;Qipei Li ,&nbsp;Hongwei Zhao","doi":"10.1016/j.marenvres.2025.107062","DOIUrl":"10.1016/j.marenvres.2025.107062","url":null,"abstract":"<div><div>Phthalate esters (PAEs) are omnipresent emerging contaminants, garnering increasing public attention. Nevertheless, the occurrence and potential risks of PAEs in tropical estuarine and coastal regions remain largely unexplored. This study investigated the occurrence, spatial distribution, and ecological risks of 12 PAEs in seawater and sediment samples collected from 9 estuaries and their adjacent areas around Hainan Island. All the 12 PAEs were examined through solid-phase extraction followed by Gas Chromatography-Mass Spectrometry (GC-MS) analyses. The total concentrations of 12 PAEs (∑₁₂PAEs) in the seawater and sediment samples were 25.6–3280.6 ng/L (mean: 721.0 ± 216.2 ng/L) and 27.0–1503.8 μg/kg dry weight (dw) (mean: 242.6 ± 272.6 μg/kg dw), respectively. Dimethyl phthalate (DMP), Dibutyl phthalate (DBP), Di(2-ethylhexyl) phthalate (DEHP), and Dimethoxyethyl phthalate (DMEP) were identified as primary homologs in both the seawater and the sediments. Additionally, the concentrations of ∑₁₂PAEs showed a decreasing trend from estuarine sites to offshore sites, indicating that riverine input may be a primary pathway for PAEs pollution in the coastal areas around Hainan Island. Preliminary risk assessment implied that DBP, DEHP, DMEP, and Bis(2-ethoxyethyl) phthalate (DEEP), pose potential threats to sensitive aquatic organisms in this region. Collectively, our findings provide valuable insights for source control and serve as a critical reference for establishing water quality criteria to mitigate PAEs pollution in tropical marine.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107062"},"PeriodicalIF":3.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the impacts of drilling and extraction activities on the marine carbonate system in the natural gas fields of Beibu Gulf, Northern South China Sea","authors":"Minxia Zhang ,&nbsp;Wei Yang ,&nbsp;Jianhang Zhang ,&nbsp;Chuqian Lu ,&nbsp;Yingxu Wu ,&nbsp;Peiqiang Zhuang ,&nbsp;Yanmei Liu ,&nbsp;Shasha Qi ,&nbsp;Xing Chen ,&nbsp;Wei Deng ,&nbsp;Zijia Zheng ,&nbsp;Ming He ,&nbsp;Yingfeng Chen ,&nbsp;Di Qi","doi":"10.1016/j.marenvres.2025.107058","DOIUrl":"10.1016/j.marenvres.2025.107058","url":null,"abstract":"<div><div>Natural gas fields are typically located in shallow gulfs. Previous studies have predominantly focused on gas leakage and its subsequent toxic effects on marine organisms; however, the impacts of accidental CO₂ leaks on carbonate dynamics during drilling and extraction remain poorly understood. In this study, we investigate carbonate parameters in two gas fields to elucidate the influences of extraction activities and natural processes on carbonate dynamics in Beibu Gulf, situated in the northern South China Sea (nSCS). Our findings indicate that Beibu Gulf acts as a CO₂ source during the late spring season, with an air-sea CO₂ flux ranging from 1.1 to 4.4 mmol m⁻² d⁻¹. Spatially, higher sea surface <em>p</em>CO₂ and temperatures were recorded at 479 ± 17 μatm and 29.6 ± 0.3 °C respectively in the Dongfang gas field within the inner gulf, compared to values of 462 ± 20 μatm and 27.6 ± 0.6 °C observed in the Ledong gas field located in the outer gulf. In the Ledong gas field, carbonate dynamics are primarily influenced by mixing between offshore subsurface water and river plumes, with no significant contributions from extraction activities noted. Conversely, dissolved inorganic carbon (DIC) levels within the Dongfang gas field exhibited two extremes: a consumption of 13 μmol kg⁻¹ in surface waters alongside an addition of 20 μmol kg⁻¹ in subsurface waters. Although enhanced biological production may lead to decreased surface <em>p</em>CO₂ levels, elevated surface <em>p</em>CO₂ values observed at Dongfang can likely be attributed to higher sea surface temperatures. In subsurface layers, we quantify and determine the origin of excess DIC based on δ¹³C_DIC analysis, attributing these carbon inputs to organic matter respiration following surface biological utilization of atmospheric CO₂. This study provides the first evidence of high biological DIC consumption in surface waters and DIC generation in subsurface waters within a shallow semi-enclosed bay, a phenomenon previously seen only in river estuaries. We demonstrate that natural processes predominantly govern carbonate dynamics within these gas fields, while any potential influences from extraction activities appear negligible.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107058"},"PeriodicalIF":3.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"δ13C, δ15N, and δ34S isotope values from preserved elasmobranch jaws: Implications for ecological studies from existing collections","authors":"Laura Holmes ,&nbsp;Charlie Huveneers ,&nbsp;Vincent Raoult ,&nbsp;Thomas M. Clarke ,&nbsp;Christian Dietz ,&nbsp;Lauren Meyer","doi":"10.1016/j.marenvres.2025.107063","DOIUrl":"10.1016/j.marenvres.2025.107063","url":null,"abstract":"<div><div>Stable isotope analysis has become a widely used biogeochemical tool owing to its capacity to reveal predator foraging habitats, trophic level, and prey preferences. The breadth of applicable tissue types is quickly growing across taxa, including for elasmobranchs, with tooth isotopes gaining traction to trace within-individual variation in trophic ecology. Jaws in museums and private collections present a unique opportunity to access samples from rare or protected species and size classes. However, most of these jaws are chemically treated to prevent degradation and to whiten teeth and cartilage for aesthetic and long-term display. Prior to using stable isotopes from these jaws, we need to understand the impacts of chemical treatments on carbon, nitrogen, and sulphur isotopes. We compared the tooth preparation process (acid digestion) and δ¹⁵N, δ¹³C, and δ³⁴S values of teeth from dried jaws to jaws preserved in ethanol, bleach, or hydrogen peroxide. We investigated the effects of preservation methods across three elasmobranch species with distinct tooth morphologies: cownose rays (<em>Rhinoptera bonasus</em>) with tooth plates, gummy sharks (<em>Mustelus antarcticus</em>) with small plate-like teeth, and broadnose sevengill sharks (<em>Notorynchus cepedianus</em>) with larger serrated teeth. Preservation had no impact on tooth digestibility or δ¹⁵N, δ¹³C, and δ³⁴S values across all dentition types. These findings support the use of display jaws from private collections and museums in ecological studies using isotopes.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107063"},"PeriodicalIF":3.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tidal dynamics and seasonal hydrological variations influencing organic carbon distribution in the Yangtze River estuary","authors":"Shizhe Chen ,&nbsp;Sha Lou ,&nbsp;Zhongyuan Yang ,&nbsp;Zhirui Zhang ,&nbsp;Shuguang Liu ,&nbsp;Irina Viktorovna Fedorova","doi":"10.1016/j.marenvres.2025.107057","DOIUrl":"10.1016/j.marenvres.2025.107057","url":null,"abstract":"<div><div>The carbon cycle process in coastal areas is extremely complex due to the coupled hydrodynamic interactions between terrestrial and marine systems. To study the spatiotemporal variations of organic carbon and their influencing mechanisms, dissolved and particulate organic carbon (DOC, POC) in water, total organic carbon (TOC) in surface sediments, water quality parameters, and sediment grain size composition were measured in five coastal sites from the Yangtze River estuary (YRE). Generalized linear mixed-effects (GLMM) model was used to identify potential processes that explained these spatiotemporal patterns. The results showed that seasonal hydrological characteristics and tidal fluctuations had a significant effect on the concentrations of DOC, POC, and TOC (<em>p</em> &lt; 0.001). Temporally, DOC concentrations were higher in wet season; POC concentrations were higher in dry season; TOC varied little between seasons. The maximum values of DOC and POC were observed at spring and moderate tides, respectively, whereas TOC increased significantly at neap tides. Furthermore, random forest model indicated that salinity and dissolved oxygen (DO) of water were the key drivers of DOC concentrations, while temperature, salinity and DO were the key drivers of POC, and temperature and salinity was the key driver of TOC (<em>p</em> = 0.01). Overall, results from this study highlight the importance of water quality and hydrodynamic factors in the variation of organic carbon, as organic carbon concentrations are influenced by multiple factors that change on both seasonal scales and tidal cycles. This study provides valuable insights into effects of environmental factors on the spatiotemporal distribution of organic carbon in coastal areas.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107057"},"PeriodicalIF":3.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linking environmental factors to macrozooplankton size structure in summer: Insights from an Arctic shelf","authors":"Vladimir G. Dvoretsky,&nbsp;Alexander G. Dvoretsky","doi":"10.1016/j.marenvres.2025.107054","DOIUrl":"10.1016/j.marenvres.2025.107054","url":null,"abstract":"<div><div>The distribution, abundance, and size structure of macrozooplankton populations in eight common taxa (<em>Themisto libellula</em>, <em>Thysanoessa inermis</em>, <em>Limacina helicina</em>, <em>Aeginopsis laurentii</em>, <em>Aglantha digitale</em>, <em>Dimophyes arctica</em>, <em>Mertensia ovum</em>, <em>Parasagitta elegans</em>) were studied in the Barents Sea in summer 2013. Four water masses were delineated based on hydrological characteristics: Murmansk Coastal Water-MCW, Atlantic Water-AW, Arctic Water-ARW, Barents Sea Water-BSW. Total abundance of macrozooplankton taxa varied between 24 and 732 individuals m⁻². Maximum abundances were recorded in the southern, central and eastern parts of the study region. Populations of the most common macrozooplankton species were dominated by young specimens indicating their spawning in the late spring and summer seasons. Normalised abundance size spectra (NASS) and normalised biomass size spectra (NBSS) were constructed for the whole study area and for each water mass. Linear regressions for NBSS were insignificant except for ARW and the combined dataset, while NASS parameters (slopes and intercepts) differed significantly between the four water masses. NASS slopes showed spatial variability and ranged from −0.81 to −1.05. NASS slopes were significantly steeper in ARW and AW. Relatively flatter slopes in BSW and MCW suggest that macrozooplankton productivity and trophic efficiency were higher in the regions with interacting water masses. Most of the macrozooplankton had a size of 1–4 mm for the entire study area with <em>Mertensia ovum</em>, <em>Aeginopsis laurentii</em>, and <em>Dimophyes arctica</em> being the most numerous. Redundancy analysis and Pearson's correlations revealed latitude/water temperature, bottom depth, and mesozooplankton biomass as the most important factors controlling macrozooplankton size variability during the study period. Our study improves our understanding of marine macrozooplankton assemblages and provides useful information for future research focused on pelagic communities during the period of warming and related ecosystem shifts in the Arctic.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107054"},"PeriodicalIF":3.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The potential contribution of microbial communities to carbon fixation and nitrogen cycle in the Eastern Indian Ocean","authors":"Changling Ding ,&nbsp;Jun Sun","doi":"10.1016/j.marenvres.2025.107056","DOIUrl":"10.1016/j.marenvres.2025.107056","url":null,"abstract":"<div><div>This study investigated the diversity and metabolic potential of microbial communities in the Eastern Indian Ocean (EIO) through 16S rDNA gene sequencing and metagenomics analyses. Water samples were collected from the surface waters (5 m depth) and 150 m depth layer in the EIO between March 20th and June 6th, 2019. This study reveals microbial-driven biogeochemical dynamics in the oligotrophic Eastern Indian Ocean, where vertically stratified communities (Cyanobacteria/Proteobacteria-dominated surface vs. diversified Proteobacteria at 150 m) and latitudinal diversity gradients reflect nutrient limitations. Metagenomics identified four carbon fixation strategies: the Calvin cycle dominated epipelagic CO₂ assimilation, while the 3-hydroxypropionate bicycle showed elevated surface activity, alongside reductive citrate and Wood-Ljungdahl pathways involving novel Actinobacteria. Nitrogen cycling exhibited spatial heterogeneity: <em>nifH</em>-dominated nitrogen fixation in the surface waters, prevalent <em>narGHI</em> nitrate reduction, and divergent <em>nirS</em>/<em>nirK</em>/<em>nosZ</em> distributions tied to nutrient gradients. Proteobacteria and Actinobacteria were key nitrogen fixers, with novel Actinobacteriota diazotrophs expanding known diversity. Elevated <em>nosZ</em> abundance in the Bay of Bengal underscored regional nitrous oxide consumption hotspots. These findings underscore microbial mediation of carbon-nitrogen fluxes in oligotrophic systems, providing genomic insights into ecosystem responses to climate-driven ocean changes.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107056"},"PeriodicalIF":3.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating the global sea snake diversity and distribution under climate change scenario","authors":"Debosmita Sikdar,&nbsp;Ahmed Shahir,&nbsp;Sumit Mandal","doi":"10.1016/j.marenvres.2025.107055","DOIUrl":"10.1016/j.marenvres.2025.107055","url":null,"abstract":"<div><div>Anthropogenically accelerated climate change has wreaked havoc on marine ecosystems, particularly affecting marine reptiles such as sea snakes. These reptiles are highly sensitive to climate change induced coral reef degradation and environmental fluctuations, leading to habitat expansion and increased human-sea snake interactions. Despite this, till date no comprehensive investigation of global sea snake diversity and distribution has been conducted. In this study, we used MaxEnt Species Distribution Modelling (SDM) to assess effects of climate change on sea snake distribution from 1993 to 2024. This analysis integrates occurrence data sourced from exhaustive literature reviews and biogeographic databases with environmental predictors like seawater temperature, salinity, and chlorophyll <em>a</em> concentration. The study identifies 74 species across 11 genera and 3 families. Among 14 biogeographic habitats examined, the South Pacific and Indian Oceans exhibit highest species richness, while the Atlantic Ocean shows the lowest. Notably, species in the Bay of Bengal and Arafura Sea demonstrate significant taxonomic distinctness. Furthermore, our findings reveal a substantial expansion of sea snake habitats from equatorial to temperate regions, primarily driven by increase in seawater temperature. Optimal habitat suitability is associated with temperatures of approximately 30 °C, chlorophyll <em>a</em> concentration of around 0.3 mg m⁻³, and salinity levels between 35 and 40 g L⁻¹. These insights into sea snake diversity and distributional shifts induced by global climate change are critical for formulating evidence-based management strategies, including implementation of sustainable fishing practices, preservation of critical habitats, and establishment of rigorous bycatch mitigation protocols to ensure conservation of these ecologically significant marine reptiles.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"207 ","pages":"Article 107055"},"PeriodicalIF":3.0,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143610832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variability of larval fish assemblages under contrasting winter environmental conditions in the northwestern Mediterranean sea","authors":"Vanesa Raya,&nbsp;M. Pilar Olivar,&nbsp;Jordi Salat,&nbsp;Joan Mir-Arguimbau,&nbsp;Elena Guerrero,&nbsp;Ana Sabatés","doi":"10.1016/j.marenvres.2025.107025","DOIUrl":"10.1016/j.marenvres.2025.107025","url":null,"abstract":"<div><div>This study analyses the influence of the winter environmental conditions on the structure of larval fish assemblages off the Catalan coast (NW Mediterranean). Data were obtained during two oceanographic surveys (February 2017 and 2018) with contrasting environmental conditions. Winter 2017 was mild, the coastal zone was occupied by cold, low salinity and productive surface waters, and the water column was slightly stratified. Winter 2018 was more severe, temperatures were lower, with intense vertical mixing and deep-water formation and cascading events down the slope that enhanced shelf-slope water exchanges. Larvae of 52 fish taxa, both shelf and oceanic, were identified, with <em>Sardina pilchardus</em> being numerically dominant. Larvae of shelf fish species were more abundant in 2017 associated with the productive coastal waters. Larvae of oceanic species were more abundant in 2018, with a wide distribution all over the area that would be related to the vertical mixing and the shelf-slope exchange processes that year. Accordingly, the distribution of fish larvae in the water column was wider and deeper in 2018 than in 2017. The assemblages identified by the cluster analysis were determined by bottom depth, sea surface temperature and sea surface chlorophyll-<em>a</em>, with dynamic height being the main factor explaining the differences in assemblages between years. These differences highlighted the role of the shelf-slope water exchange processes in 2018, mainly in the submarine canyons. The results shed light on how changes in larval fish assemblages are indicators of shifts in environmental conditions. Under a climate change scenario, it is likely that the decrease in the fertilisation processes, such as deep-water formation (by convection or cascading) and vertical mixing, would have adverse effects on larval fish populations.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"205 ","pages":"Article 107025"},"PeriodicalIF":3.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}