Marine environmental research最新文献

{"title":"Composition of inshore ichthyoplankton community in the Canary islands from a spatial and seasonal perspective","authors":"S. Moreno-Borges,&nbsp;A. Rodríguez,&nbsp;A. Brito,&nbsp;S. Clemente","doi":"10.1016/j.marenvres.2024.106824","DOIUrl":"10.1016/j.marenvres.2024.106824","url":null,"abstract":"<div><div>Early life stages of fish are insufficiently studied in most regions around the globe, and consequently, there is an important gap in knowledge on the life cycle of most teleosts. In the Canary Islands (Eastern Central Atlantic), most studies on ichthyoplankton communities are based on traditional net tows in open waters that provide information about early larval stages of pelagic species in the area, while nearshore benthic fish remain highly understudied. In this study, light traps were employed for the first time to assess post-larval stages of neritic fish in this archipelago. A two-year survey was carried out to collect nearshore fish larvae every 6 months at 11 localities from El Hierro, Tenerife and Lanzarote. A total of 3940 fish larvae classified into 13 orders, 28 families and 44 species were collected. These results provide a wide description of the composition of the inshore ichthyoplankton off the Canary Islands, across islands and seasons. Main environmental factors (SST, sea floor orography, oceanographic phenomena …) influencing the population dynamics of this community are discussed. Additionally, the ichthyoplankton assemblages were assessed from the intra-annual perspective, analyzing the species composition and abundances by months and seasons, and providing new insights into reproduction cycles of many common benthic fishes at shallow marine ecosystems of the islands. This study is important to further understand the life cycles of some of the most common fish species in the Canary Islands, unraveling main environmental factors that affect the success of their offspring that sustain populations.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106824"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594125","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":"Short-term exposure to okadaic acid induces behavioral and physiological responses in sea urchin (Strongylocentrotus intermedius)","authors":"Hongce Song ,&nbsp;Meiyun Dong ,&nbsp;Lei Wei,&nbsp;Yuxuan Zhang,&nbsp;Haifeng Huang,&nbsp;Xiaolong Chu,&nbsp;Xiaotong Wang","doi":"10.1016/j.marenvres.2024.106823","DOIUrl":"10.1016/j.marenvres.2024.106823","url":null,"abstract":"<div><div>Massive harmful algal blooms (HABs) have increased the risk of marine organisms encountering the dinoflagellate toxin, okadaic acid (OA). <em>Strongylocentrotus intermedius</em>, a globally significant benthic aquaculture species, has a large appetite for benthic algae. During red tide events, there is a high risk of red tide toxin accumulation. This study systematically evaluated the potential impact of short-term OA exposure on the behavior and physiological functions of juvenile <em>S. intermedius</em>. From typical (5 μg/L) to extreme OA concentrations (20 μg/L) during HAB outbreaks, OA exposure gradually inhibited a series of tube foot-related behaviors (sheltering, foraging, righting, and tube-foot tenacity). At OA concentrations during HAB outbreaks (5 μg/L), the tube foot function of <em>S. intermedius</em> was progressively inhibited. Further physiological indicator analyses revealed that the activity of antioxidants increased over a short period to prevent damage from reactive oxygen species induced by OA. However, OA ultimately suppressed the immune response of <em>S. intermedius</em>, leading to apoptosis. Although HAB-associated concentrations of OA (5 μg/L) did not induce a continuous increase in the integrated biological response index of <em>S. intermedius</em>, this study speculated that HABs pose a future risk to echinoderm species. Notably, principal component analysis results showed that OA exposure eventually induced significant changes in the production of O²⁻, malondialdehyde, and total glutathione, as well as in glutathione S-transferase activity and caspase-7, -8, and -9 levels. This study provides preliminary evidence of OA's toxic effects on sea urchins and essential data for urgent risk assessments of algal toxin pollution in aquaculture during HABs.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106823"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568826","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":"Effect of monsoonal rainfall and tides on salinity intrusion and mixing dynamics in a macrotidal estuary","authors":"Nay Oo Hlaing,&nbsp;Gubash Azhikodan,&nbsp;Katsuhide Yokoyama","doi":"10.1016/j.marenvres.2024.106791","DOIUrl":"10.1016/j.marenvres.2024.106791","url":null,"abstract":"<div><div>Studies on the temporal and spatial variations of estuarine hydrodynamics, particularly those focusing on the combination of extreme and transition periods in the estuary with seasonal fluctuation of discharge, are rarely reported. Due to its importance, this study investigates the effect of rainfall and tide on the salinity intrusion and mixing conditions in the monsoon-affected macrotidal Tanintharyi River estuary (TRE), Myanmar, during the period of 2017–2019. The maximum salinity intrusion and partially mixed to well-mixed conditions were found during the neap-spring tidal cycles of dry seasons. The minimum salinity intrusion, along with partially mixed to stratified conditions, was found during spring to neap tidal cycles of wet seasons. Further, the transitional periods before and after the wet season have different salinity intrusion and mixing conditions based on the different discharge fluctuations in the past months. The salinity intrusion and mixing conditions in the TRE were largely influenced by the lack of rainfall during the dry season, whereas the combined effect of rainfall and the tidal range dominated during the wet season. Finally, the salinity interface gradient (SIG₁₀) index was found to be the convenient index to examine the mixing condition of a large area compared to the traditional indices because of the minimum data requirement with easiness of calculation by using the reference figures from the published articles.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106791"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546280","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":"Uncovering foraminiferal assemblages in Pulau Redang and the importance of FoRAM index calibration for reef monitoring in South China sea","authors":"Fatin Izzati Minhat ,&nbsp;Che Din Mohd Safuan ,&nbsp;Sabrina Alia Mohd Emran ,&nbsp;Aida Farisah Mohd Hasnizul ,&nbsp;Aminudin Muhammad Afiq-Firdaus ,&nbsp;Zainudin Bachok ,&nbsp;Wan Izatul Asma Wan Talaat","doi":"10.1016/j.marenvres.2024.106825","DOIUrl":"10.1016/j.marenvres.2024.106825","url":null,"abstract":"<div><div>To mitigate adverse effects of ocean warming on coral reef degradation, resource managers increasingly explore management and regulation of local stressors to strengthen coral resilience and recovery. Comprehensive assessments and monitoring efforts offer a holistic understanding of reef dynamic ecosystems. In this study, we documented the distribution of benthic foraminiferal assemblages surrounding Pulau Redang, Malaysia, and assessed their potential for monitoring coral reef health using the Foraminifera in Reef Assessment and Monitoring (FoRAM) Index. Undeveloped (R1–R3) and developed (R4–R6) reef sites revealed distinct differences in reef conditions. Foraminiferal distribution showed <em>Amphistegina lessonii</em> (14–34%) as the dominant species, followed by <em>Calcarina hispida</em> (21%) and <em>Calcarina mayori</em> (19%). The Q-mode cluster analysis classified the distribution of foraminiferal assemblages in Pulau Redang into four sub-groups based on the reef ecological conditions. Group A1 and A2, represent the foraminiferal assemblage on the undeveloped west side of the island where live coral cover was &gt;30%. Meanwhile, Group B1 and B2 represent the assemblage found in developed coastal regions with low live coral cover (≤20%). Additionally, the CCA results revealed a substantial influence of substrate type on the distribution of benthic foraminifera in the reef environments of Pulau Redang. FoRAM index consistently yielded high values across the study area despite varying coral reef conditions, probably due to the prevalence of <em>Calcarina mayori</em> in mesotrophic reefs (R4–R6), potentially distorting FoRAM values and providing a misleading indicator of reef conditions. The Modified Foram Index (MFI), calculated by excluding calcarinids, classified R3, R4, and R6 as less conducive for reef growth, aligning better with observed reef conditions. We recommend calibrating the FoRAM Index, particularly in mesotrophic reefs where calcarinids dominate foraminiferal assemblages, to enhance its precision and reliability for coral reef health monitoring and assessment within the region.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106825"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568827","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":"Assessing the diversity and species composition in macroinvertebrate assemblages thriving in shallow water macroalgal habitats: Structural complexity is not always better.","authors":"Susana Pinedo, Esther Jordana, Enric Ballesteros","doi":"10.1016/j.marenvres.2024.106818","DOIUrl":"10.1016/j.marenvres.2024.106818","url":null,"abstract":"<p><p>The assemblages of motile and sessile macroinvertebrates [mainly arthropods (peracarids), mollusks and annelids] were studied in three shallow macroalgal habitats from the NW Mediterranean Sea. Habitats were respectively dominated by three macroalgae: Ericaria mediterranea, a canopy-forming fucoid with repeatedly ramified cylindrical branches and spine-like projections; Cystoseira compressa, a canopy-forming fucoid with occasionally ramified compressed branches; and Ellisolandia elongata, a turf-forming, repeatedly branched, geniculate calcified alga. A total of 175,800 macroinvertebrate specimens, belonging to 228 taxa were collected. Macroinvertebrate assemblages in E. mediterranea habitat showed the highest abundances and number of taxa (104,412 specimens and 184 taxa), followed by those from C. compressa (49,128 specimens and 157 taxa) and E. elongata habitats (22,260 specimens and 144 taxa). Annelids were the most diverse group (43% of taxa) and amphipods the most abundant (78% of individuals). Macroinvertebrate abundances, alpha-diversity and species composition significantly differed among habitats and/or sites, while the number of taxa did not show significant differences neither among sites nor among habitats. Despite the simpler morphology of E. elongata respect to fucoid species, E. elongata habitat registered the lowest macrofauna abundance values but the highest alpha-diversity. Amphipods were the most abundant group in fucoid algae habitats (82-85%), while bivalves dominated in E. elongata one. Annelid polychaetes were the third more abundant group. Macroinvertebrate assemblages thriving in E. elongata habitat were always different to those found in fucoid algae habitats. Amphipods Protohyale schmidtii, Jassa herdmani, Jassa morinoi and Stenothoe gallensis were the most abundant species in fucoid algae habitats, while several species of Mytilidae, together with Caprella liparotensis, S. gallensis and nematodes dominated in E. elongata turfs. Differences observed are explained according to differences in algal morphological complexity and natural variability.</p>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"106818"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142605002","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 role of larval transport on recruitment dynamics of red mullet (Mullus barbatus) in the Central Mediterranean Sea","authors":"F. Quattrocchi ,&nbsp;F. Fiorentino ,&nbsp;F. Gargano ,&nbsp;G. Garofalo","doi":"10.1016/j.marenvres.2024.106814","DOIUrl":"10.1016/j.marenvres.2024.106814","url":null,"abstract":"<div><div>Recruitment success depends on external forcing mechanisms such as ocean currents that affect the transport of eggs and larvae to favorable habitats. In this study, we investigated the role of larval transport in the recruitment of <em>Mullus barbatus</em> in the Central Mediterranean Sea by modeling the recruits' abundance as a function of both spawning stock size and dispersal rates of the species’ early life stages. Our analysis involved twenty years of data on recruits and spawners abundance obtained from scientific trawl surveys, and data on larval dispersal rates derived from a combination of actualized published sources and original data. By calculating the estimates of retention, import and uniformity of the contribution of the spawning areas distributed among different Geographical Sub Areas (GSAs) in the Sicilian nurseries, we assessed their contribution to recruitment using modified Ricker stock size-recruits models. In particular, our results show that a high uniform contribution from spawning areas within GSA16, mainly related to the oceanographic patterns promoting larval retention, together with spawners abundance, significantly reduced the variability of red mullet recruitment. We further highlighted that when switching from a higher to a lower level of evenness of contribution to the recruit population from different spawning areas in the GSA16, the expected spawning stock abundance per recruit for a given fishing pattern can suffer a rapid short-term decline, which is likely to have negative consequences for stock assessment and management decisions. Our results suggest that larval transport plays a crucial role in explaining the interannual variability of recruitment, thereby contributing to a better understanding of stock size variation. Additionally, our study enhances the understanding of the spatial dynamics involved in the recruitment of this species, which is of increasing interest within fisheries management frameworks.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106814"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560763","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":"Expanding sample volume for microscopical detection of nanoplastics","authors":"Arto Hiltunen ,&nbsp;Joona Huopalainen ,&nbsp;Ermei Mäkilä ,&nbsp;Sirkku Häkkilä ,&nbsp;Pia Damlin ,&nbsp;Jari Hänninen","doi":"10.1016/j.marenvres.2024.106806","DOIUrl":"10.1016/j.marenvres.2024.106806","url":null,"abstract":"<div><div>The extent of nanoplastic pollution has raised severe environmental and health concerns. While the means for microplastic detection are abundant, improved tools for nanoplastic detection are called-for. State-of-the-art microscopic techniques can detect nanoplastics down to tens of nanometers, however, only from small sample sizes (typically <span><math><mo>∼</mo></math></span> <span><math><mrow><mn>10</mn><mspace></mspace><mi>μ</mi><mi>l</mi></mrow></math></span>). In this work, we describe a method that enables sampling of 1 l of seawater by the means of correlative Raman- and SEM-techniques. This is achieved by adapting common microplastic sample purification protocols to suit the nanoplastic study. In addition, we decorate a membrane filter with SERS-property to amplify the Raman signals. Together, the purification method combined with the use of the SERS-activated-membrane-filter enables identification and imaging of individual nanoplastic particles from significantly larger sample sizes than before. In the nanoscale the average recovery rate is 5 %. These results aim to provide useful tools for researchers in the fight against plastic pollution.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106806"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546281","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":"Acoustic telemetry suggests the lesser spotted dogfish Scyliorhinus canicula stays and uses habitats within a French offshore wind farm","authors":"Pierre Labourgade ,&nbsp;Lydie I.E. Couturier ,&nbsp;Jérôme Bourjea ,&nbsp;Mathieu Woillez ,&nbsp;Eric Feunteun ,&nbsp;Jan T. Reubens ,&nbsp;Thomas Trancart","doi":"10.1016/j.marenvres.2024.106802","DOIUrl":"10.1016/j.marenvres.2024.106802","url":null,"abstract":"<div><div>Offshore wind farms (OWF) are a rapidly expanding renewable energy source, but their effects on marine wildlife need further investigation. These infrastructures form new artificial habitats that may modify the behaviour and spatial distribution of fish species. Among the species likely to be affected, benthic sharks occupying coastal habitats are particularly exposed to the development of OWF, especially as electrosensitive species. This study used passive acoustic telemetry to investigate the behaviour of a benthic shark, the lesser-spotted dogfish <em>Scyliorhinus canicula</em>, within France's first operational OWF. Most tagged sharks remained in the vicinity of the OWF post-release, exhibiting site fidelity and seasonal residency with reduced presence during winter when water temperatures are the lowest. The primary site frequented is a monopile with scour protection on soft substrate, offering potential shelters and food sources. This study provides new insights into the species' ecology and contributes to improving our understanding of how anthropogenic structure installation in the marine environment affects the behaviour of <em>S. canicula</em>.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106802"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568813","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":"Corrigendum to \"A functional perspective on the factors underpinning biomass-bound carbon stocks in coastal macrophyte communities\" [Mar. Environ. Res. 193 (2024) 106289].","authors":"Roel Lammerant, Alf Norkko, Camilla Gustafsson","doi":"10.1016/j.marenvres.2024.106748","DOIUrl":"10.1016/j.marenvres.2024.106748","url":null,"abstract":"","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":" ","pages":"106748"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142290447","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":"Recurrent marine heatwaves compromise the reproduction success and long-term viability of shallow populations of the Mediterranean gorgonian Eunicella singularis","authors":"Julia Sarda ,&nbsp;Andrea Gori ,&nbsp;Ruth Doñate-Ordóñez ,&nbsp;Núria Viladrich ,&nbsp;Federica Costantini ,&nbsp;Joaquim Garrabou ,&nbsp;Cristina Linares","doi":"10.1016/j.marenvres.2024.106822","DOIUrl":"10.1016/j.marenvres.2024.106822","url":null,"abstract":"<div><div>Mediterranean gorgonians are being threatened by the impact of recurrent extreme climatic events, such as marine heatwaves (MHWs). The white gorgonian <em>Eunicella singularis</em> was suggested to be the most resistant gorgonian species in the NW Mediterranean, mainly due to the presence of symbiotic algae. However, a substantial shift in the conservation condition of the species has been observed in the recent years. The aim of this study is to evaluate the lethal and sublethal effects of recent MHWs on the populations of <em>E. singularis</em>. Our results show that recurrent MHWs have impacted both the demography and reproduction of the species between 2002 and 2020, driving mortalities up to 36%, an increase in the percentages of non-reproducing adult colonies (11–58%), and a significant decrease in the recruitment rates. Although <em>E. singularis</em> is a highly dynamic species in comparison with other temperate gorgonians, the present study suggests that the persistence of this species may be severely compromised under recurrent MHWs, at least at shallowest depths.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"203 ","pages":"Article 106822"},"PeriodicalIF":3.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142639258","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}