Marine environmental research最新文献

{"title":"The effects of nitrite stress on metabolites and gene expression in sea Cucumbers (Apostichopus japonicus)","authors":"Haoran Xiao ,&nbsp;Ye Tian ,&nbsp;Zitong Wang ,&nbsp;Weiyan Li ,&nbsp;Jiayi Zhang ,&nbsp;Lingshu Han ,&nbsp;Chong Zhao ,&nbsp;Jun Ding","doi":"10.1016/j.marenvres.2025.107203","DOIUrl":"10.1016/j.marenvres.2025.107203","url":null,"abstract":"<div><div>Chronic nitrite accumulation in intensive aquaculture poses a significant threat to the sustainability of sea cucumbers (<em>Apostichopus japonicus)</em>, a key species in marine aquaculture. This study investigated the molecular and metabolic responses of <em>A. japonicus</em> to 21-day nitrite stress (4.88 mg/L) through transcriptomic and metabolomic analyses. At the end of the experiment, the weight gain rate of the Cg group was 11 %, while that of the Nc group was −9 %. Nitrite exposure significantly impaired growth performance of <em>A. japonicus</em> (<em>p</em> &lt; 0.05).</div><div>Metabolomic profiling identified 36 differential metabolites, revealing activation of the TCA cycle and amino acid metabolism to prioritize energy production and nitrogen reallocation. Transcriptomic data highlighted 226 differentially expressed genes. Notably, <em>Zimp10</em>, a key regulator of TCA cycle activity in echinoderms, was upregulated, while <em>FALDH</em>, a glycolysis-related gene, was downregulated, indicating a shift toward energy-efficient aerobic respiration.</div><div>Antioxidant capacity was compromised through suppression of glutathione metabolism genes (<em>MGST1</em>, <em>GST</em>), exacerbating oxidative damage. Stress signaling pathways were dynamically regulated. Downregulation of <em>Ras1-X2</em> suppressed mTOR activity, activating autophagy and mitophagy for cellular repair. Additionally, enrichment of NOD-like receptor pathways and upregulation of <em>vGTPase1-like</em> signaled immune engagement. Prolonged nitrite exposure overwhelmed adaptive mechanisms, leading to physiological decline.</div><div>These results demonstrate <em>A. japonicus</em> of reliance on metabolic reprogramming and stress signaling to mitigate nitrite toxicity, while highlighting vulnerabilities in antioxidant defenses. The study provides critical insights for optimizing aquaculture environments through targeted management of nitrite exposure and metabolic resilience strategies.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107203"},"PeriodicalIF":3.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928808","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 vulnerability of commercial bivalves to intensifying atmospheric heatwaves in coastal ecosystems","authors":"A. Castro-Olivares,&nbsp;M. Des,&nbsp;M. deCastro,&nbsp;B. Thomas,&nbsp;M. Gómez-Gesteira","doi":"10.1016/j.marenvres.2025.107210","DOIUrl":"10.1016/j.marenvres.2025.107210","url":null,"abstract":"<div><div>Heatwaves are expected to intensify and become more frequent throughout the 21st century, posing significant threats to coastal ecosystems and socio-economically important species. Shellfisheries based on intertidal and shallow subtidal infaunal bivalves such as <em>Ruditapes decussatus</em>, <em>Ruditapes philippinarum</em>, <em>Venerupis corrugata</em>, and <em>Cerastoderma edule</em> are of significant socio-economic importance in Europe, particularly in the Galician Rías Baixas (NW Spain). This study evaluates how future atmospheric heatwaves may compromise the thermal dynamics of these four commercially important bivalves in the Ría de Arousa. Global atmospheric and oceanic climate data from CMIP6 were downscaled using the WRF and Delft3D-FLOW models. The WRF model was used to characterize atmospheric heatwaves for the period 2025–2099 under the SSP2-4.5 and SSP5-8.5 pathways, while the Delft3D-FLOW model calculated bottom water temperatures under the SSP5-8.5 pathway during the most intense future atmospheric heatwave. Thermal exposure on bivalves was evaluated using a 1D sediment heat transport model. The analysis of atmospheric heatwaves revealed a total of 88 events projected throughout the 21st century, with an increase of the frequency, duration, and intensity over time, particularly during summer months. A significant increase in bottom water temperature in the estuary's inner areas was simulated under the most intense future atmospheric heatwave, driven by extreme air temperature and calm winds. The species <em>V. corrugata</em> and <em>C. edule</em> experienced the longest exposure to high temperatures, linked to their shallower burrowing depths and lower thermal tolerance, while <em>R. decussatus</em> and <em>R. philippinarum</em> remained unaffected during the atmospheric heatwave simulated. These findings highlight the vulnerability of certain bivalve species to intensifying heatwaves, which could lead to greater socioeconomic consequences.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107210"},"PeriodicalIF":3.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932037","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":"Evaluation of microplastics in marine selective and non-selective suspension-feeding benthic invertebrates","authors":"Afifah Khan,&nbsp;Konstantine J. Rountos","doi":"10.1016/j.marenvres.2025.107205","DOIUrl":"10.1016/j.marenvres.2025.107205","url":null,"abstract":"<div><div>Microplastic (MP) pollution is ubiquitous in marine ecosystems, presenting significant concerns to organisms and fisheries. Suspension-feeding invertebrates are particularly susceptible to encountering and consuming these particles due to their feeding strategy. This meta-analysis assessed MP contamination in selective suspension-feeding (SSF) and non-selective suspension-feeding (NSSF) benthic marine invertebrate species globally. Data reported from 144 peer-reviewed articles, covering as wide of a geographic scope as possible, were extracted and analyzed. In total, 518 independent batches of organisms (i.e. rows in the spreadsheet) were compiled, representing seven Phyla, 12 Classes, 53 Families, and 131 species. In both SSFs and NSSFs, microfibers and fragments were the most common MP shapes found, with polyethylene, polyethylene terephthalate, and polypropylene being the predominant polymer types. While the mean detection frequencies of MPs within individuals of each independent sample batch were similar between SSFs (63 % ± 18 95 %CI) and NSSFs (73 % ± 5 95 %CI), NSSFs had significantly greater MP concentrations than SSFs (i.e. 9.13 MPs ind-1 ±8.87 95 %CI; 138.52.74 MP g ww⁻¹ ±114.6 95 %CI vs. 6.33 MPs ind-1 ±1.53 95 %CI; 3.45 MP g ww⁻¹ ±1.19 95 %CI, respectively). Significant differences in the relative abundance of MPs were also found based on taxonomy. Collectively, these results highlight important differences in MP concentrations in suspension-feeding benthic invertebrates globally and may help inform future efforts in determining appropriate sentinel species for future MP surveys.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107205"},"PeriodicalIF":3.0,"publicationDate":"2025-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912702","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 spatio evolution of carbon sequestration and optimizing ecological restoration strategies using the InVEST model: A case study of the Yellow River Estuary, China","authors":"Xiaoyang Yang ,&nbsp;Chunjuan Wang ,&nbsp;Chao Liu ,&nbsp;Zhen Liu ,&nbsp;Bangqi Liu ,&nbsp;Chunxia Xu","doi":"10.1016/j.marenvres.2025.107204","DOIUrl":"10.1016/j.marenvres.2025.107204","url":null,"abstract":"<div><div>Coastal wetland ecosystems play a significant role in the global carbon cycle and are among the most effective carbon sinks on Earth. This study focuses on the coastal wetland ecosystem of the Yellow River Estuary, analyzing the spatiotemporal changes in wetland types from 1999 to 2024 using long-term sequential and refined wetland classification data. Furthermore, the study evaluates the dynamic changes in carbon stock through the application of the Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) model. The results show that: (1) From 1999 to 2024, the area of the shoreland increased by 22.8 %, approximately 99.1 km², with minimal changes in the area of wetlands such as <em>Phragmites australis</em>, Paddy Fields and Ponds, while the area of wetlands like Intertidal Flats and <em>Suaeda salsa</em> was more significantly affected by the invasion of <em>Spartina alterniflora</em> and the subsequent ecological restoration measures. (2) The spatial distribution of carbon stock exhibited significant heterogeneity, with higher carbon stock in areas along the riverbanks and lower carbon stock in the intertidal areas. Overall, carbon stock showed a trend of \"increasing first and then decreasing\" with a reduction of 2.46 % by 2024 compared to 1999, amounting to approximately 54,200 tons. (3) The primary factors influencing carbon stock changes include natural processes such as sedimentation and land formation by the Yellow River, as well as human-driven ecological restoration efforts. The continuous decrease in carbon sink areas and increase in carbon source areas have led to the gradual reduction of overall carbon stock. This study constructs a framework for carbon stock assessment and optimization of ecological restoration strategies using the InVEST model, enhances the understanding of how specific wetland ecosystems contribute to the carbon cycle amidst global environmental changes, providing valuable insights for regional sustainable development and ecological conservation.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107204"},"PeriodicalIF":3.0,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932038","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":"What can go wrong for future Senegalese sole recruitment? Temperature and food availability as important drivers of early-life-history traits","authors":"Adriana E. Sardi ,&nbsp;Lisa Omingo ,&nbsp;Marie-Laure Bégout ,&nbsp;Xavier Cousin ,&nbsp;Manuel Manchado","doi":"10.1016/j.marenvres.2025.107201","DOIUrl":"10.1016/j.marenvres.2025.107201","url":null,"abstract":"<div><div>Water temperature and prey availability are key factors influencing the successful recruitment of early life stages in fish. Understanding how these variables modulate larval growth and survival is essential for modelling larval dynamics. In this study we reared <em>S. senegalensis</em> larvae under controlled laboratory conditions to assess the effects of temperature and feeding frequency on larval development. Three temperatures (17, 20, and 23 °C) and three feeding frequencies (Ff 2.5 fed 2.5 times per week, Ff 4 four times per week, and Ff 6 six times per week) were tested from 12 to 32 days post-hatch (dph) in both individual and group housing systems. Survival, growth, and metamorphosis progress were monitored, and the expression of six genes related to nutrition (<em>tryp1a</em> and <em>apoA4Aa2</em>), cellular stress (<em>hsp90aa</em> and <em>hsp70</em>), endocrine regulation (<em>tgb</em>), and muscle development (<em>myf4</em>) were monitored on S3 and S4 metamorphic larvae. The feeding frequency appeared as the primary driver influencing all investigated traits, while temperature played a less pronounced effect. These data demonstrate the critical role of energy provision in regulating growth, development, and survival, which interacts with temperature, particularly under conditions where metabolic and energy demands cannot be fully fulfilled. Additionally, the Senegalese sole larvae exhibited compensatory genomic adaptive responses to efficiently mobilize nutrients from the gut and adjust the thyroid axis and cellular responses to support metamorphosis transformation and metabolism when food availability was limited or when temperature approached physiological thresholds.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107201"},"PeriodicalIF":3.0,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922038","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":"Harnessing melanin from deep-sea yeast Hortaea werneckii NIOT129A8: Heavy metal adsorption potential","authors":"Pankaj Verma ,&nbsp;Sivakumar Krishnan ,&nbsp;Seyieleno C. Seleyi ,&nbsp;Rupmala Jaiswal,&nbsp;Magesh Peter,&nbsp;Gopal Dharani","doi":"10.1016/j.marenvres.2025.107192","DOIUrl":"10.1016/j.marenvres.2025.107192","url":null,"abstract":"<div><div>Marine organisms are recognized for their unique ability to detoxify heavy metals through chelation, effectively sequestering and reducing metal ion toxicity. This study focuses on the deep-sea yeast <em>Hortaea werneckii</em> NIOT129A8, which exhibits a unique adaptation for melanin production, a compound known for its chelating properties that can be harnessed to sequester and detoxify metal ions. Sequencing of the internal transcribed spacer (ITS) region and translation elongation factor (TEF) gene showed similarity of 99.2 % and 96.1 %, respectively with <em>H. werneckii</em> type strain CBS 107.67, presenting it as a potentially new strain from the deep sea. Growth conditions were optimized to maximize melanised biomass production, targeting cost-effective media. The study employed diverse spectroscopic analyses such as EPR, FTIR and NMR, to confirm the presence and structural properties of melanin within the yeast. The melanised ghost cells demonstrated effective shielding against UV-C exposure and maintained 50<strong>–</strong>70 % <em>E. coli</em> growth across various exposure times. An analysis of <em>H. werneckii</em> biomass treatments with NaOH and phosphorylation was conducted to evaluate their efficiency in heavy metal biosorption in which the former exhibited high removal efficiencies for Cu²⁺ (79 %), Pb²⁺ (76 %), Cr⁶⁺ (75 %), Cd²⁺ (74 %), Ni²⁺ (73 %), and Co²⁺ (69 %), emphasizing the importance of pretreatment in enhancing adsorption properties. The findings highlight the potential of deep-sea yeast strain NIOT129A8 as a bio-adsorbent in bioremediation applications, particularly due to its adaptability, cost-effective production, and high metal-binding efficiencies.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107192"},"PeriodicalIF":3.0,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912703","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":"Trends in seagrass research in the 21st century – are we there yet?","authors":"Hung Manh Nguyen ,&nbsp;Gidon Winters","doi":"10.1016/j.marenvres.2025.107198","DOIUrl":"10.1016/j.marenvres.2025.107198","url":null,"abstract":"<div><div>Duarte's 1999 review, “Seagrass ecology at the turn of the millennium” established a benchmark for seagrass research. Twenty-five years later, an analysis of 11,245 publications (published between 2000–2023) reveals substantial growth but persistent biases. While the volume of annual publications on seagrasses has increased over this period almost 4 folds, seagrass research remains significantly less extensive than studies on mangroves and coral reefs. Authors from only two countries (Australia and the USA) were still responsible for a huge proportion (35 %) of the world's seagrass publications. The seagrass community has remained disproportionately focused on only 4 key species which together account for 59 % of all seagrass publications. While scientific attention continues and even becomes stronger in the last 12 years for <em>Zostera marina</em> and <em>Cymadocoae nodosa</em>, there are some signs of change with recent growing attention to the tropical species <em>Thalassia hemprichii</em> and <em>Halophila stipulacea</em>. While previously dominated by basic descriptive ecology, seagrass research topics have become more quantitative and focused on responses to stressors, genetics and genomics, ecosystem services, and restoration and resilience building.</div><div>These findings demonstrate that the seagrass research community needs to shift towards a more holistic and inclusive approach. We must prioritize under-represented species and geographical regions, adopt integrated methodologies and foster strong interdisciplinary collaborations to secure the long-term health and sustainability of these vital coastal ecosystems. Only through such concerted efforts can we effectively address the multifaceted challenges facing seagrasses globally.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107198"},"PeriodicalIF":3.0,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143907748","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":"Why not be larger in wave action sites? Energetic constraints due to body size in hermit crabs","authors":"Cesar Rubio-Lopez ,&nbsp;Guillermina Alcaraz","doi":"10.1016/j.marenvres.2025.107199","DOIUrl":"10.1016/j.marenvres.2025.107199","url":null,"abstract":"<div><div>Coping with wave action is energetically demanding. Therefore, the endurance of animals exposed to waves should depend on a long-term balance between energy intake and the energy needed to withstand waves. Since the hydrodynamic forces of lift and drag increase with body size, we expected to find smaller individuals in wave-exposed areas. We sampled the body size distribution of hermit crabs along a gradient of wave action intensity. Then, we experimentally estimated energy budget (assimilated energy, maintenance metabolic rate, and the cost of coping with waves) as a function of body size in individuals exposed to bidirectional water flow at two different intensities for 21 days. We used the exponents of the assimilated energy and of the energetic cost of coping with waves to compute the theoretically predicted optimum and maximum energetic size according to the Sebens model. We found that the cost of coping with waves increased with wave intensity and body size due to the higher energetic demands of physiological maintenance and of remaining attached to the substrate. Although assimilated energy increased with body size under both wave regimes, this increase was less pronounced in the individuals exposed to the stronger wave regime compared to those in the weaker wave treatment. Furthermore, under the stronger experimental wave regime energetic constraints increased with body size, and individuals collected in the field were smaller than the maximum size predicted by the model for a similar wave regime. Together, these results suggest that hermit crabs may exhibit an adaptive submaximal growth strategy to mitigate the hydrodynamic costs of wave action.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107199"},"PeriodicalIF":3.0,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899657","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":"Challenges in coastal ecosystem Sustainability: Drivers of water quality degradation and their ecological impact","authors":"Keerthi Sri Senarathna Atapaththu ,&nbsp;Sandamali Sakunthala Herath ,&nbsp;Ganadeepan Subramanuiam ,&nbsp;Yapa Mudiyanselage Ajith Lalith Weerasinghe Yapa ,&nbsp;Widana Gamage Shirani Manel Kumari ,&nbsp;Kanaji Masakorala ,&nbsp;Bedigama Kankanamge Kolita Kamal Jinadasa ,&nbsp;Meilin Wu","doi":"10.1016/j.marenvres.2025.107194","DOIUrl":"10.1016/j.marenvres.2025.107194","url":null,"abstract":"<div><div>Coastal waters are home to a diverse range of habitats forming highly diverse transitional ecosystems such as mangroves, seagrass beds, coral reefs, and salt marshes. The health of these ecosystems is closely tied to the surrounding coastal environment, making them highly vulnerable to environmental changes that can significantly disrupt the entire coastal ecosystem. Ensuring the sustainability of these ecosystems requires a deep understanding of the factors contributing to coastal water degradation and their implications for effective ecosystem management. This review focuses on key drivers of coastal environmental deterioration such as nutrient loading, heavy metals, microplastics, toxic substances, construction activities, and their ecological consequences. These factors, whether directly or indirectly, impact aquatic organisms' physiological and biochemical processes while altering the physical characteristics of coastal landscapes, ultimately disrupting vital ecological functions. Adopting a multidisciplinary approach that brings researchers, environmental activists, stakeholders, and policymakers together is vital to start an effective dialogue for the sustainable management of coastal habitats.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107194"},"PeriodicalIF":3.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896132","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":"Environmental DNA reveals how the absolute dominant zooplankton species affects the community","authors":"Zhang Hongbo ,&nbsp;Zhou Chao ,&nbsp;Isabella Buttino ,&nbsp;Yan Jinpei ,&nbsp;Yu Xinjian ,&nbsp;Liu Mengyuan ,&nbsp;Zhao Yueze","doi":"10.1016/j.marenvres.2025.107191","DOIUrl":"10.1016/j.marenvres.2025.107191","url":null,"abstract":"<div><div>Zooplankton play a crucial role in marine ecosystems. In recent years, the East China Sea (ECS) has recorded the highest levels of pollution among China's marine areas, leading to a trend toward homogenization of the dominant zooplankton species. Environmental degradation has triggered various ecological responses, but how these responses further impact community structure requires more investigation. In this study, we employed a combined approach of morphological identification and environmental DNA (eDNA) metabarcoding to analyze the effects of seasonal variation and dominant species on zooplankton communities. The results indicated that an absolute dominant species, <em>Calanus sinicus</em>, emerged in the ECS, significantly occupying ecological resources. As seasons changed, <em>C. sinicus</em> showed a trend of migrating from offshore to coastal areas. The high abundance of <em>C. sinicus</em> in the sub-regions led to a regional decline in zooplankton community diversity and interspecies cooperation, while the community also experienced stronger dispersal limitations. Furthermore, the spring zooplankton community exhibited higher alpha and beta diversity, as well as a more stable co-occurrence network compared to summer. However, the level of interspecies cooperation in spring was lower than in summer. In conclusion, the high abundance of <em>C. sinicus</em> has a significant impact on zooplankton communities, and this impact shows a lag effect.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"209 ","pages":"Article 107191"},"PeriodicalIF":3.0,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143896133","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}