Marine environmental research最新文献

{"title":"Organic matter ingestion and assimilation rates by the sea cucumber Holothuria (Holothuria) tubulosa (Gmelin, 1788) at different temperatures and potential effects on benthic trophic status","authors":"Hiba Abyaba ,&nbsp;Viviana Pasquini ,&nbsp;Claudia Ennas ,&nbsp;Pierantonio Addis ,&nbsp;Antonio Pusceddu","doi":"10.1016/j.marenvres.2024.106830","DOIUrl":"10.1016/j.marenvres.2024.106830","url":null,"abstract":"<div><div>We investigated the effects of different temperature anomalies (up to +12 °C) on the biochemical features of sediments offered to specimens of the sea cucumber <em>Holothuria (Holothuria) tubulosa</em> (Gmelin, 1788) and of its feces. We also estimated ingestion and assimilation rates of different classes of organic compounds after the different treatments. The exposure to temperature anomalies influenced the metabolism and organic matter assimilation efficiency of <em>H. tubulosa</em>. Counterintuitively, our results would suggest that <em>H. tubulosa</em>, irrespectively of temperature, might not be the best option for removing excess organic matter from eutrophicated sediments, though having consequences on the organic matter nutritional quality. Since oceans’ temperature is projected to further increase by 2100 along with frequency, intensity and duration of marine heatwaves, <em>H. tubulosa</em> will most likely experience a potential contraction of its distribution areal, with cascading consequences on benthic trophic webs dynamics.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"203 ","pages":"Article 106830"},"PeriodicalIF":3.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622867","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":"Influence of environmental parameters on marine plankton diversity in the southern coastal waters of Korea: Emphasis on thermal stratification","authors":"An Suk Lim ,&nbsp;Na Yun Park ,&nbsp;Hyun Soo Choi ,&nbsp;Sang Uk Kang ,&nbsp;Jin Hee Ok ,&nbsp;Yeong Du Yoo","doi":"10.1016/j.marenvres.2024.106829","DOIUrl":"10.1016/j.marenvres.2024.106829","url":null,"abstract":"<div><div>Plankton are fundamental to aquatic ecosystems, forming the base of the marine food web and playing a crucial role in the global carbon cycle. While the impact of environmental factors on marine plankton ecosystems has been widely studied, the seasonal variability in plankton diversity has received comparatively less attention. Here, we investigated the complexity and distribution of plankton species in Korean coastal waters in relation to seasonal environmental changes, particularly those linked to water mass characteristics and the presence of a thermocline, using alpha and beta diversity indices. A thermocline was observed at all stations in July, coinciding with the lowest diversity and richness, but was absent in September, when diversity indices peaked. In the upper layer above the thermocline, diatom species such as <em>Pseudo-nitzschia delicatissima</em> and <em>Skeletonema costatum</em> were dominant. Analysis of the Shannon index suggested that planktonic ecosystems in the South Sea of Korea from May to September 2021 were well-balanced. These findings enhance our understanding of the potential effects of environmental variability and thermal stratification on plankton biodiversity and community dynamics in Korean coastal waters.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"203 ","pages":"Article 106829"},"PeriodicalIF":3.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622938","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":"Metabolic balance of a marine neritic copepod under chronic and acute warming scenarios","authors":"C. de Juan,&nbsp;C. Traboni,&nbsp;A. Calbet,&nbsp;E. Saiz","doi":"10.1016/j.marenvres.2024.106827","DOIUrl":"10.1016/j.marenvres.2024.106827","url":null,"abstract":"<div><div>We investigated the impact of sublethal thermal stress on physiological rates of the copepod <em>Paracartia grani</em>, and explored the influence of previous thermal history on this response. The copepods, originally reared at 19 °C, were raised for 23 generations at 22 °C and 25 °C, and posteriorly exposed for 7-d to stress temperature (28 °C). The copepod acclimation capacity was assessed by comparing metabolic balance at 28 °C against their respective rearing temperatures. There was an inverse relationship between rearing temperature and body size and carbon content for the reared copepod lines. Weight-specific rates, except respiration, increased with rearing temperature, whereas per capita rate differences were levelled, partly due to differences in copepod size. Heat stress impact, as weight-specific rate fold-change, appeared inversely related to rearing temperature. Carbon gains were overall sufficient and slightly in excess to account for carbon losses. Gross-growth efficiency across warming scenarios was conserved, emphasizing resilience to environmental change. Our findings underscore the importance of considering the species' thermal history when predicting the response of copepod populations to climate change associated phenomena such as gradual slow ocean warming or heatwave events.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"203 ","pages":"Article 106827"},"PeriodicalIF":3.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142676373","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":"DMS behaviors in pen culture of Sinonovacula constricta in Longhai, China","authors":"Chao Zhang,&nbsp;Nuoxuan Wang,&nbsp;Shengbin Lv,&nbsp;Shibo Yan,&nbsp;Rong Tian,&nbsp;Shanshan Wang,&nbsp;Bingkun Wang,&nbsp;Jinpei Yan,&nbsp;Miming Zhang","doi":"10.1016/j.marenvres.2024.106826","DOIUrl":"10.1016/j.marenvres.2024.106826","url":null,"abstract":"<div><div>Dimethyl sulfide (DMS) released by the ocean has received widespread attention due to its role in aerosol formation and impact on global climate change. Research on DMS mainly focuses on coastal and open ocean environments, with limited studies addressing the influence of aquaculture activities on the production and release of marine DMS. Thus, we investigated whether fertilization for algae cultivation and the feeding process in pen culture of <em>Sinonovacula constricta</em> significantly contribute to DMS release. We found notable diurnal variations in DMS concentrations during and after the culture period in the ponds. During the post-culture period, both the concentration and flux of DMS in the ponds were higher than those during the culture period. The average flux of DMS during the culture and post-culture period were only 0.1 ± 0.1 μmol/(m²·d) and 0.4 ± 0.3 μmol/(m²·d), respectively, indicating that aquaculture activities of <em>Sinonovacula constricta</em> may not produce or release substantial DMS when compared with those from the coastal aeras and open oceans.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"203 ","pages":"Article 106826"},"PeriodicalIF":3.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622828","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":"Species loss and decline in taxonomic diversity of macroalgae in the Gulf of Trieste (Northern Adriatic sea) over the last six decades.","authors":"Annalisa Falace, Giuseppina Alongi, Martina Orlando-Bonaca, Stanislao Bevilacqua","doi":"10.1016/j.marenvres.2024.106828","DOIUrl":"10.1016/j.marenvres.2024.106828","url":null,"abstract":"<p><p>Assessing historical changes in marine biodiversity at regional or local scales is often challenging due to insufficient long-term data for most marine organisms. Yet, these assessments are crucial to understanding potential long-term variation in the species pool in response to complex and interacting local and global environmental changes. Here, we performed a comprehensive review of scientific and grey literature, archival records and floristic data spanning over the last two centuries to reconstruct an updated and revised taxonomic dataset of macroalgae in the Gulf of Trieste (Northern Adriatic Sea), one of the most exposed to human-driven pressures and climatically vulnerable regions in the Mediterranean Sea. The subset of data from 1960 to present, encompassing nearly all available records, was used to assess the contribution of species replacement and gain/loss to temporal β-diversity and to test for changes in the taxonomic distinctness of the species pool over the past six decades. We identified 68 species that have never been recorded again since 1990, indicating their likely local extinction. The major change, however, was due to species replacement and to a reduction in the taxonomic breadth of macroalgal diversity, as highlighted by a significant decrease in the Average Taxonomic Distinctness of the species pool, especially along the Italian coast. The loss of species has mainly affected habitat-formers (e.g., Cystoseira sensu lato) and species with Atlantic/Circumboreal and Mediterranean affinities, which were replaced by turf-formers and species with Pantropical/Cosmopolitan/IndoPacific affinities. While multiple human impacts (e.g., coastal artificialisation, unbalanced N/P ratios) might have contributed to the ongoing change in macroalgal diversity, the observed decline of cold-affinity species in favour of warm-affinity species pointed out a critical role of exacerbating climatic changes. Our study demonstrated that historical reconstructions of species records coupled with effective indicators for the analysis of presence/absence data can help quantify long-term biodiversity changes and provide valuable insights into their possible causes.</p>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"106828"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622725","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":"Potential advantage of invasive estuarine worms over native species under exposure to relevant concentrations of graphene oxide: Behavioral and biochemical insights","authors":"Maria João Figueiredo ,&nbsp;Cátia Venâncio ,&nbsp;Paulo Cardoso ,&nbsp;Paula A.A.P. Marques ,&nbsp;Etelvina Figueira ,&nbsp;Adília Pires","doi":"10.1016/j.marenvres.2024.106821","DOIUrl":"10.1016/j.marenvres.2024.106821","url":null,"abstract":"<div><div>Technological development using graphene oxide (GO) has increased in the last years, leading to the release of this contaminant to final sinks, such as estuaries. Due to their potential to flocculate and deposit when interacting with high ionic strength media, GO poses a threat, especially to benthic organisms like polychaetes. In addition to chemical contamination, estuaries also face a severe threat from invasive species, which can cause irreversible damage to ecosystems. The combination of abiotic and biotic stressors may work together on native species, decreasing their resilience. Thus, this study aims to assess the effects of an abiotic stressor, GO nanosheets (0.001, 0.01, 0.1, 1, 10 mg GO/Kg dw) on <em>Hediste diversicolor</em> (native species) and <em>Arenicola marina</em> (invasive species) through several behavioral assays and biochemical markers. The impact of invasive species <em>A. marina</em> (biotic factor) on <em>H. diversicolor</em> avoidance behavior was also evaluated. Obtained results demonstrated that <em>H. diversicolor</em> fled from lower GO contamination compartments to higher ones and that exposure to increased GO concentrations negatively impacted its burrowing activity. They were unable to escape from higher contamination compartments, but at the highest concentrations, the bioturbation activity was significantly higher, which may indicate that <em>H. diversicolor</em> tended to dwell deeper in the sediment. <em>A. marina</em> showed an escape behavior from compartments with higher GO concentrations. Additionally, this species' bioturbation activity significantly decreased when exposed to GO. Moreover, avoidance tests demonstrated that the presence of <em>A. marina</em> affected the behavior of <em>H. diversicolor</em>. Regarding oxidative stress, <em>H. diversicolor</em> seems to be more impacted than <em>A. marina</em>, since Lipid peroxidation levels were higher in all GO concentrations and Superoxide dismutase activity significantly increased in the lowest GO levels. Overall, <em>H. diversicolor</em> spatial distribution may be severely constrained under abiotic and biotic stress, while <em>A. marina'</em>s higher foraging activity may promote its propagation in the estuary. Behavioral tests, combined with biochemical markers have shown to be relevant tools for the development of more environmental-realistic assessment and monitoring frameworks for estuaries.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106821"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142568814","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":"A bibliometric analysis of seagrass sediment: Interpretation and prospects for research hotspots","authors":"Kaiyun Chen ,&nbsp;Weijie Liu ,&nbsp;Chao Zhong ,&nbsp;Mengmeng Zhao ,&nbsp;Yaqin Liao ,&nbsp;Hong Du ,&nbsp;Qinghua Chen","doi":"10.1016/j.marenvres.2024.106807","DOIUrl":"10.1016/j.marenvres.2024.106807","url":null,"abstract":"<div><div>Seagrass sediment is intricately linked to their ecological functions, collectively forming the foundation of the seagrass ecosystem, and providing a range of essential ecosystem services, underscoring their significant research importance. This study aims to analyze the emerging hotspots and evolving trends in research on seagrass sediment over the past two decades (2003–2023), identify current research gaps, and forecast future directions for investigation. We extracted data from 3,390 studies identified in the Web of Science that have published pivotal research on seagrass sediment. Over this period, investigations into seagrass sediment have progressively transitioned from focusing on seagrass ecology to examining global change impacts on these sediments, ultimately shifting towards blue carbon research. Notably, there remains a paucity of studies addressing the sediments of small and tropical seagrasses. Furthermore, while the sedimentation mechanisms related to seagrasses represent an active area of inquiry, comprehensive analyses regarding these mechanisms are still limited. This study underscores the critical need for further exploration into sedimentation processes involving seagrasses as well as calls for enhanced integration within blue carbon ecosystem sediment studies pertaining to seagrass habitats.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106807"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586527","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 effects of different densities of Asparagopsis armata (Harvey, 1855) seaweed on the clam Ruditapes philippinarum (A. Adams and Reeve, 1850): Insights from a laboratory assessment","authors":"Daniel Crespo ,&nbsp;Sara Leston ,&nbsp;Lénia D. Rato ,&nbsp;Ariana B. Moutinho ,&nbsp;Filipe Martinho ,&nbsp;Sara C. Novais ,&nbsp;Miguel A. Pardal ,&nbsp;Marco F.L. Lemos","doi":"10.1016/j.marenvres.2024.106812","DOIUrl":"10.1016/j.marenvres.2024.106812","url":null,"abstract":"<div><div>Several invasive species can occupy the same geographic area. Interaction between species depends on several factors, and the results of such interactions can be highly diverse. <em>Asparagopsis armata</em> is a invasive red seaweed whose exudates contain a cocktail of toxic halogenated compounds. In this study, the impact of high and low levels of <em>A. armata</em> on the bivalve <em>Ruditapes philippinarum</em> was assessed in a laboratory experiment. Both are prominent invasive species in Europe and could share the same habitats. The effects of the algae were measured at different biological levels, framed by an integrated approach: bioturbation as a proxy for organismal activity and behaviour within the sediment, and several subcellular biomarkers related to oxidative stress and damage, energy metabolism, detoxification, and neurotransmission. While bioturbation revealed the effects of exudates on the bivalve, with a decrease in most parameters when exposed to the different amounts of algae, only marginal responses were found for biomarkers, suggesting a possible temporal decoupling between the behavioural response and the intrinsic biochemical environment. These results denote that despite the recognized potential of biomarkers to address a myriad of situations, a proxy for higher levels of biological organization, such as behaviour, for its integration of lower-level effects, is a robust tool to address complex and lesser-known mixtures of stressors.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106812"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553401","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":"Chatting behind the reef: Fish bioacoustic diversity of tropical back-reefs in Fiji, South Pacific","authors":"Maria Ceraulo ,&nbsp;Giuseppa Buscaino ,&nbsp;Gabriel Marcelli ,&nbsp;Shubha S. Singh ,&nbsp;Susanna Piovano ,&nbsp;Elena Papale","doi":"10.1016/j.marenvres.2024.106819","DOIUrl":"10.1016/j.marenvres.2024.106819","url":null,"abstract":"<div><div>Back-reef habitats are important and fragile transition zones acting as nurseries for many coral reef fishes. In this framework, Passive Acoustic Monitoring (PAM) can be an important tool to evaluate the diversity and dynamics of sonic fish community. Here, we investigated the diversity, spatial and diel dynamics of fish sounds in back-reef habitats at Makogai Island in Fiji, South Pacific. Synchronized underwater recorders were deployed in 4 bays collecting data for about 4 days. The abundance of 12 different sub-categories of fish sounds were quantified. Signals were acoustically characterized and the level of discrimination between the sub-categories was evaluated by Discrimination Function Analysis. Generalized Additive Models showed that the abundance of signals was related to the bay and the hour. Moreover, the Shannon Diversity and Equitability Indices were calculated using acoustic and visual census data to describe fish biodiversity of each bay. The two bays with greater biodiversity based on visual census also showed a greater acoustic diversity at dawn and night. Our results highlight the importance of PAM to reveal the diversity of fish community in back-reef habitats, providing a baseline to understand future changes in these crucial environments.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"202 ","pages":"Article 106819"},"PeriodicalIF":3.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142564673","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":"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}