Sara González-Delgado , Naira Sosa , Lucía Epherra , Celso A. Hernández , José Carlos Hernández
{"title":"What doesn't kill you makes you stronger: the sea urchin Arbacia lixula living on volcanic CO2 vents","authors":"Sara González-Delgado , Naira Sosa , Lucía Epherra , Celso A. Hernández , José Carlos Hernández","doi":"10.1016/j.marenvres.2025.107495","DOIUrl":"10.1016/j.marenvres.2025.107495","url":null,"abstract":"<div><div>Anthropogenic CO<sub>2</sub> emissions drive ocean acidification (OA), which reduces seawater pH and carbonate ion availability, threatening calcifying organisms such as sea urchins. This study examines the long-term effects of OA on <em>Arbacia lixula</em> using a natural volcanic CO<sub>2</sub> vent at Fuencaliente, La Palma (Canary Islands) as an analogue of future conditions. We analyzed the external morphology, skeletal strength, mineralogy, and growth of <em>A. lixula</em> across three sites that differed consistently in mean pH (from 8.14 to 7.65 during low tide). Sea urchins from low pH conditions were smaller, with shorter spines and reduced jaw-to-diameter ratios, yet their tests showed higher fracture resistance than those from ambient conditions. Additionally, individuals from acidified zones showed altered growth dynamics, with fewer growth rings. Skeletal changes and growth alterations are consistent with modified mineralization processes and dietary shifts toward non-calcareous food sources. This study highlighting the morphological plasticity and resilience of <em>A. lixula</em> under persistent natural acidification, offering insight into how sea urchins may respond in a high-CO<sub>2</sub> ocean.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"212 ","pages":"Article 107495"},"PeriodicalIF":3.2,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145010904","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}
Vitor Figueira Arueira , Pedro Vianna Gatts , Fabio Bozzeda , Marcelo Gomes de Almeida , Carlos Eduardo de Rezende , Ilana Rosental Zalmon , Carlos Alberto de Moura Barboza , Lucia Fanini , Omar Defeo , Leonardo Lopes Costa
{"title":"Roles of predator–prey interactions and environmental drivers in sandy beach macrofauna populations","authors":"Vitor Figueira Arueira , Pedro Vianna Gatts , Fabio Bozzeda , Marcelo Gomes de Almeida , Carlos Eduardo de Rezende , Ilana Rosental Zalmon , Carlos Alberto de Moura Barboza , Lucia Fanini , Omar Defeo , Leonardo Lopes Costa","doi":"10.1016/j.marenvres.2025.107488","DOIUrl":"10.1016/j.marenvres.2025.107488","url":null,"abstract":"<div><div>Sandy beaches are harsh environments where local physical conditions strongly drive ecological patterns. Ecological interactions are often overlooked in population dynamics studies, although the seemingly homogeneous nature of ocean beaches might support predation as a relevant ecological force. This study uses Lotka-Volterra models (LVMs) to assess whether populations of surface-active predators and prey on sandy beaches in southeastern Brazil are regulated by consumer–resource dynamics. Four air breathing species were monitored over 18 months across three beaches, including two predators (ghost crab <em>Ocypode quadrata</em> and tiger beetle <em>Cylindera nivea</em>) and two prey (sandhopper <em>Atlantorchestoidea brasiliensis</em> and golden ladybug <em>Phaleria testacea</em>). Bayesian stable isotope mixed models (δ<sup>13</sup>C and δ<sup>15</sup>N) indicated trophic assimilation between predators and prey and relatively narrow trophic spectrum. Environmental variables usually accounted for less than 16 % of the variation in predator and prey abundance over time according to Generalized Mixed-Effects Models (GMEMs). Importantly, LVMs demonstrated significant reciprocal or top-down effects between predators and prey across all beaches. The smaller the influence of environmental variables, the stronger biotic control. These findings underscore the potential of predation as major driver of population dynamics on sandy beaches, opening new avenues for research grounded in holistic, interaction-based approaches to sandy beach ecology.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"212 ","pages":"Article 107488"},"PeriodicalIF":3.2,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916492","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}
Kelsey Webber , Katharina Fabricius , Shaun K. Wilson , Dmitry A. Konovalov , Nicoline Winding , Andrew S. Hoey
{"title":"Canapes in the canopy: Canopy macroalgae are dining hotspots for small and juvenile fishes at Orpheus Island, Great Barrier Reef","authors":"Kelsey Webber , Katharina Fabricius , Shaun K. Wilson , Dmitry A. Konovalov , Nicoline Winding , Andrew S. Hoey","doi":"10.1016/j.marenvres.2025.107490","DOIUrl":"10.1016/j.marenvres.2025.107490","url":null,"abstract":"<div><div>Tropical macroalgal habitats are often overlooked or perceived as degraded reef states, yet they contribute to reef habitat diversity and provide important ecological functions including supply of nutritional resources for a diverse suite of reef fishes. Understanding how reef fishes use macroalgal habitats is critical for appreciating their importance in tropical seascapes. We investigated which components of natural macroalgal habitats are selectively used by reef fishes in natural macroalgal beds across three sites on an inshore reef on Orpheus Island, Great Barrier Reef. We quantified benthic composition and feeding behaviour of reef fishes within 1 m<sup>2</sup> quadrats across the three sites, with feeding behaviour quantification based on remote underwater video. Small bodied and/or juvenile herbivorous fish dominated the foraging assemblage, particularly juvenile <em>Siganus doliatus</em> and parrotfishes. Notably, seven of the eight most commonly observed fish taxa exhibited strong and consistent positive feeding electivity for canopy macroalgae over all other microhabitats (i.e., understorey algae, turfs and sand). This clear pattern of selective feeding highlights the important functional role of canopy macroalgae in structuring reef trophic interactions and indicates non-random microhabitat use by foraging fishes. In contrast, multivariate and univariate analyses indicated that benthic composition and macroalgal structure were poor predictors of feeding rates of the dominant feeding fishes. These results indicate that although small-bodied fishes selectively targeted macroalgal canopies, feeding rates were not simply limited by the availability and physical structure, inviting further investigation of additional ecological drivers. Our findings underscore the importance of macroalgal habitats in tropical seascapes and challenge the perception that they are ecologically impoverished or merely symptomatic of degradation.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"212 ","pages":"Article 107490"},"PeriodicalIF":3.2,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046214","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}
Xiuwen Xu , Xiuqi Jin , Keying Ding , Giovanni Casini , Jinyue Jia , Zexianghua Wang , Xiaolong Yin , Jingwen Yang , Jixiu Wang , Tianming Wang
{"title":"Ecotoxicological impacts of short-term fluoxetine exposure on the intertidal sea urchin (Heliocidaris crassispina): Effects on anti-predation, feeding/digestion, and reproduction","authors":"Xiuwen Xu , Xiuqi Jin , Keying Ding , Giovanni Casini , Jinyue Jia , Zexianghua Wang , Xiaolong Yin , Jingwen Yang , Jixiu Wang , Tianming Wang","doi":"10.1016/j.marenvres.2025.107484","DOIUrl":"10.1016/j.marenvres.2025.107484","url":null,"abstract":"<div><div>Fluoxetine (FLX), a commonly prescribed antidepressant, has entered aquatic envi ronments due to its widespread use and the inefficiency of wastewater treatment plants in fully removing it. This has led to growing concerns within the scientific community about its potential adaptive effects on marine organisms, particularly in intertidal zones where research is still limited. To address these concerns, this study investigated the short-term adaptive effects of FLX at varying concentrations (0.3, 3, 30 μg/L) on the intertidal sea urchin <em>Heliocidaris crassispina</em>, a species critical to the intertidal ecosystem. The data reveal that there was a dose-dependent increase in the sea urchins’ reaction time to environmental threats. Despite the absence of a substantial alteration in the overall food consumption, the foraging time of the three groups of sea urchins exposed to varying degrees of FLX exhibited an increase, while the food consumption demonstrated a decrease, and the activities of pepsin and lipase in the intestine exhibited an increase. Additionally, FLX interfered with the normal gonadal development cycle and induced higher rates of anomaly and asymmetry in offspring. These findings indicate that short-term exposure to FLX may have adverse effects on the anti-predation, feeding and reproduction of sea urchins, providing a novel insight into the ecological impact of antidepressant pollution in intertidal ecosystems.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"212 ","pages":"Article 107484"},"PeriodicalIF":3.2,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913467","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}
Jorge Ramos-Alcántara , Javier Soto-Navarro , Elisabet Verger-Miralles , Gabriel Jordà
{"title":"Quantifying sources of floating marine debris on the coasts of the Balearic islands","authors":"Jorge Ramos-Alcántara , Javier Soto-Navarro , Elisabet Verger-Miralles , Gabriel Jordà","doi":"10.1016/j.marenvres.2025.107480","DOIUrl":"10.1016/j.marenvres.2025.107480","url":null,"abstract":"<div><div>Identifying the sources of pollutants remains as one of the main challenges in research on marine debris pollution, which mainly consists of what is known as marine litter. In this work, we develop a method to estimate the origin of marine debris found along the coasts of the Balearic Islands during the summers of 2014–2021. We combine detailed records from coastal clean-up campaigns with ocean currents simulations from a high-resolution model to perform a probabilistic tracking of debris motion. We use an inverse modelling approach whereby, starting from where the debris was collected and working backwards, allows us to estimate its origin. In this way, the temporal evolution of marine debris emission from different coastal sections of the archipelago was quantified.</div><div>Results reveal a predominant transport pattern towards the E-NE-N, in accordance with the dominant circulation in the region. On average, 42.4 % of coastal debris emissions are exported outside the archipelago, 35.9 % remain in the same source zone, and 21.7 % are redistributed to other coastal areas of the islands. Within the inter-coastal transport of debris in the Balearic Islands, high-emission areas include Porto Cristo, Sóller, Alcudia, Ibiza, and Mahón. Northern zones of each island primarily act as receptors, while transport debris out of the archipelago. The results also suggest that the interannual variability in debris transport patterns is low.</div><div>The methodology proposed here could be applied in other coastal regions where systematic observational records exist and be used to optimize the organization of the cleaning campaigns and improve the management and mitigation of this type of pollution.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"212 ","pages":"Article 107480"},"PeriodicalIF":3.2,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926425","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}
Young Seok Jeong , Seohwi Choo , Donhyug Kang , Hansoo Kim , Ho Young Soh
{"title":"Complementary integrated assessment of zooplankton abundance, size structure, and biomass using hydroacoustic and stratified sampling methods","authors":"Young Seok Jeong , Seohwi Choo , Donhyug Kang , Hansoo Kim , Ho Young Soh","doi":"10.1016/j.marenvres.2025.107485","DOIUrl":"10.1016/j.marenvres.2025.107485","url":null,"abstract":"<div><div>Accurate estimation of zooplankton biomass remains challenging due to species-specific acoustic signatures and sampling biases. This study evaluated zooplankton abundance and biomass across acoustically defined layers and assessed the consistency between biomass estimates derived from net sampling and acoustic methods. Zooplankton samples were collected using the Multiple Opening/Closing Net and Environmental Sampling System (MOCNESS) in higher signal scattering layers (HSLs) and lower signal scattering layers (LSLs), with acoustic signals verified using a scientific echosounder (38 and 200 kHz). Although zooplankton abundance was higher in the LSLs, the difference was not statistically significant (<em>p</em> > 0.05). However, significant differences in biomass were observed between HSLs and LSLs (<em>p</em> < 0.05). Notably, the biomass of <em>Euphausia pacifica</em> exhibited strong agreement between net- and acoustic-based estimates (1.7 % overestimation), while small copepods (<em>Calanus sinicus</em> and <em>Paracalanus</em> spp.) displayed significant discrepancies due to their small size and low acoustic reflectivity. These results underscore the complementary strengths of net and acoustic methods and highlight the need for species-specific correction models to enhance biomass estimation in marine ecosystems.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"212 ","pages":"Article 107485"},"PeriodicalIF":3.2,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913468","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}
Satrio Hani Samudra , Tania M. Kenyon , Cut Aja Gita Alisa , Rindah Talitha Vida , Dietriech G. Bengen , Tries B. Razak
{"title":"Prolonged instability in blast-fished rubble beds impedes coral recovery","authors":"Satrio Hani Samudra , Tania M. Kenyon , Cut Aja Gita Alisa , Rindah Talitha Vida , Dietriech G. Bengen , Tries B. Razak","doi":"10.1016/j.marenvres.2025.107479","DOIUrl":"10.1016/j.marenvres.2025.107479","url":null,"abstract":"<div><div>Blast fishing has severely degraded Indonesia's coral reefs, reducing biodiversity and leaving rubble beds. In Bunaken National Park (BNP), it peaked in the 1970s and declined after the park's 1991 establishment, yet extensive rubble remains. Unstable rubble hinders coral recruitment and reef recovery. We surveyed four large rubble areas in BNP, including one previously restored site, to assess their potential for natural regeneration. At each site, we quantified rubble bed and fragment features (i.e., slope angle, bed thickness, fragment morphometrics and stability, coral recruitment) and characterized the rubble binding community. We then analysed which biophysical factors drive rubble stability, binding prevalence, and coral recruit abundance. Despite differences among sites in other factors, the rubble stability likeliood was consistently low (<10 %), even at the site where restoration was attempted. Rubble binding likelihoods ranged from 7 to 25 %, with crustose coralline algae being the dominant binding agent across all sites. All rubble was relatively small (∼10 cm), but longer rubble fragments were associated with greater stability, binding, and coral recruit abundance. Thicker rubble beds also drove increased binding, while steeper slopes corresponded with lower recruit abundance. Overall, natural coral recovery remains limited (0.6–2.6 % coral cover) despite the passage of 30 years since blast fishing ceased, and the restoration attempt. Our findings underscore the importance of rubble morphometrics and the biophysical environment in shaping reef recovery potential. Substrate stabilization appears essential to support coral recruitment. Crucially though, restoration interventions must be securely anchored and consistently maintained and monitored to be effective over time.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"212 ","pages":"Article 107479"},"PeriodicalIF":3.2,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144919877","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":"Continuous water monitoring of platinum and carbon electrodes potential for assessing redox potential and biological activity in the intertidal zone","authors":"Umi Sholikah , Shunta Nohara , Kyeongmin Kim , Tadashi Hibino , Ilwon Jeong","doi":"10.1016/j.marenvres.2025.107462","DOIUrl":"10.1016/j.marenvres.2025.107462","url":null,"abstract":"<div><div>Continuous monitoring in coastal environments is essential for detecting the outbreak of environmental issues. Potentiometric sensors, which utilize electrodes to detect oxidation-reduction (redox) reactions, offer a valuable approach for such monitoring. In this study, we investigated the applicability of platinum electrode (PtE) and carbon fiber board electrode (CfbE) with distinct response characteristics for redox reaction and biological growth environment monitoring in intertidal environments. The field observation was conducted for 6 months to measure the changes in electrode potentials with the natural phenomenon. PtE and CfbE potentials responded to variations in DO, reflecting the influence of tide fluctuations on the intertidal environment. PtE potential was mainly maintained 0.35 V and detected reductant introduction. CfbE potential varied depending on the development of algae-based biofilms on the electrode surface. The biofilm acted as a direct or indirect electron acceptor at the water layer and the electrode interface, resulting it to have a potential of −0.1–0.4 V. These characteristics demonstrated the capacity of these electrodes to monitor the abiotic state and biological growth conditions in the water layer, enabling the health assesment of the intertidal zone environment. The attachment of sediment particles and the biofilm on the electrode surface had a negligible impact, indicating their durability for long-term monitoring. Therefore, PtE and CfbE application has the potential to reliably assess redox and biological activity in intertidal zones.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"211 ","pages":"Article 107462"},"PeriodicalIF":3.2,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890000","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}
Jingwei Wang , Jiaxin Wang , Pan Zhao , Shuzhen Li , Xuwang Zhang , Dan Xu , Qiao Ma
{"title":"Deciphering the enzymatic responses, composition, network complexity, and functional degraders of the marine sediment bacterial community in response to 2-methyl-4-isothiazoline-3-one exposure","authors":"Jingwei Wang , Jiaxin Wang , Pan Zhao , Shuzhen Li , Xuwang Zhang , Dan Xu , Qiao Ma","doi":"10.1016/j.marenvres.2025.107469","DOIUrl":"10.1016/j.marenvres.2025.107469","url":null,"abstract":"<div><div>2-Methyl-4-isothiazoline-3-one (MIT) is a widely employed antimicrobial agent frequently detected in environments; however, current documentation regarding its impacts on microbial communities and biodegradation processes remains limited. Herein, marine sediment systems were established to investigate the MIT impacts under tiered concentrations (CK, 0 μg/L; LC, 5 μg/L; MC, 50 μg/L; HC 5 mg/L). The extracellular polymeric substance contents increased in the LC and MC groups, but not in the HC group, after one day of exposure. MIT inhibited the protease, dehydrogenase, and catalase activities in the HC group after 14 days of exposure. Bacterial community structure was altered in response to high concentrations of MIT. <em>Lutibacter</em> (44.59 %) and <em>Flavobacterium</em> (7.90 %) were the predominant genera that maintained its stability. <em>Cognatiyoonia</em> and <em>Pseudorhodobacter</em> decreased on Day 1, while <em>Rhodoferax</em> and <em>Pseudorhodobacter</em> increased on Day 14. Network analysis demonstrated reduced bacterial community interactions. Functional prediction indicated that MIT inhibited carbon metabolism and citrate cycle process in the HC group. These results suggested the potential ecotoxicological risks of MIT to marine systems under prolonged exposure conditions. Furthermore, three novel bacterial strains, i.e., <em>Brevibacterium</em> sp., <em>Microbacterium</em> sp., and <em>Epilithonimonas</em> sp., were isolated with demonstrated MIT biodegradation capacity for the first time. This study advances our comprehension of the impacts of MIT on the marine environment and provides valuable bacterial resources for bioremediation.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"211 ","pages":"Article 107469"},"PeriodicalIF":3.2,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144890003","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}
Yejin Kim , Hyo-Keun Jang , Seok-Hyun Youn , Huitae Joo , Kwanwoo Kim , Sanghoon Park , Jaesoon Kim , Sungjun Kim , Myeongseop Kim , Myung-Joon Kim , Yoon-Ji Lee , Ha-Young Choi , Sang-Heon Lee
{"title":"Phytoplankton community responses to environmental changes in the Yellow Sea","authors":"Yejin Kim , Hyo-Keun Jang , Seok-Hyun Youn , Huitae Joo , Kwanwoo Kim , Sanghoon Park , Jaesoon Kim , Sungjun Kim , Myeongseop Kim , Myung-Joon Kim , Yoon-Ji Lee , Ha-Young Choi , Sang-Heon Lee","doi":"10.1016/j.marenvres.2025.107455","DOIUrl":"10.1016/j.marenvres.2025.107455","url":null,"abstract":"<div><div>This research examines phytoplankton dynamics in the Yellow Sea (YS), a highly productive and ecologically significant region currently experiencing rapid environmental changes. Using high-performance liquid chromatography (HPLC), we analyzed phytoplankton pigment composition from samples collected between 2018 and 2020 to assess community responses to environmental factors. Cluster analysis, Redundancy Analysis (RDA), Variance Partitioning Analysis (VPA), and Generalized Additive Models (GAMs) were applied to identify dominant phytoplankton communities and their environmental association. Our analysis identified four distinct phytoplankton communities. Cluster 1 was dominated by diatoms under low temperature and high nutrient condition. Cluster 2 also featured a significant presence of diatoms but included a higher contribution of cryptophytes. Cluster 3 exhibited a mixed community with no single dominant group. Cluster 4 was characterized by high temperatures and low nutrient concentrations, with cyanobacteria and prymnesiophytes being dominant groups. RDA and VPA identified temperature and nutrients as key drivers of community structure in the YS. GAMs indicated that increasing temperatures favor cyanobacteria and prymnesiophytes, while phosphorus limitation reduces diatom dominance. These results suggest that global warming and anthropogenic nutrient inputs could substantially alter the YS phytoplankton community, reducing the prevalence of diatoms and increasing non-diatom groups such as cyanobacteria and prymnesiophytes. Such shifts could have profound implications for the marie food web, productivity, and biogeochemical cycles in the YS.</div></div>","PeriodicalId":18204,"journal":{"name":"Marine environmental research","volume":"211 ","pages":"Article 107455"},"PeriodicalIF":3.2,"publicationDate":"2025-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144893465","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}