Aquatic Ecology最新文献

{"title":"Macrophyte litter diversity affects microbial respiration but not litter mass loss","authors":"Albert L. Suhett,&nbsp;Adriano Caliman,&nbsp;Francisco A. Esteves,&nbsp;Vinicius F. Farjalla","doi":"10.1007/s10452-026-10362-7","DOIUrl":"10.1007/s10452-026-10362-7","url":null,"abstract":"<div><p>Litter mixing effects (LME) may alter microbial-mediated decomposition in aquatic ecosystems, but it remains unclear whether these effects are related to the chemical diversity of litter and leachates or whether they change over time. Furthermore, most aquatic studies of LME have focused on terrestrial litter decomposition in streams, where fine particles and leachates are readily transported downstream, neglecting interactions between particulate and dissolved organic matter derived from autochthonous plant litter. We investigated the effects of species richness and identity of eight aquatic macrophytes on microbial-mediated catabolic processes in microcosms mimicking lentic conditions. We incubated all possible combinations of 1, 2, 4 and 6 species from an eight-species pool for 48 days and quantified microbial respiration, litter dry-weight loss, metabolic efficiency of decomposition, and chemical diversity of both litter and leachates. Macrophyte litter species richness reduced cumulative microbial respiration but did not affect dry-weight loss. Increasing species richness and incubation time led to stronger negative non-additive effects on microbial respiration, whereas mass-loss deviations were weak and unsystematic. Species identity also influenced mixture responses, indicating that richness effects were not solely driven by the number of species. Chemical diversity increased asymptotically with richness and partially explained the magnitude of non-additive effects on microbial respiration. Species richness also increased metabolic efficiency of decomposition, indicating lower respiratory carbon loss per unit of litter mass lost. Our results suggest that macrophyte litter diversity can reduce carbon mineralization without slowing detritus mass loss, potentially altering energy transfer and carbon fate in macrophyte-dominated lentic food webs.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10362-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Zooplanktonic copepod Heliodiaptomus viduus as a reservoir of Vibrio cholerae and Vibrio parahaemolyticus in freshwater ecosystems: Implications for aquatic public health in West Bengal","authors":"Sk Saruk Islam,&nbsp;Sujoy Midya","doi":"10.1007/s10452-026-10358-3","DOIUrl":"10.1007/s10452-026-10358-3","url":null,"abstract":"<div><p>The present study investigates the antimicrobial resistance (AMR) patterns of <i>Vibrio cholerae</i> and <i>Vibrio parahaemolyticus</i> isolated from copepods (<i>Heliodiaptomus viduus</i>) across four study sites in West Bengal, India: Tamluk, Haldia, Contai, and Egra. A total of 293 isolates were identified using genus and species-specific primer, revealing a higher prevalence of <i>V. cholerae</i> in Contai (17.75%) and <i>V. parahaemolyticus</i> in Haldia (13.31%). Antibiotic susceptibility tests against 19 antimicrobial agents showed high resistance to ampicillin (AM), piperacillin (PIP), and rifampicin (RA), with 100% resistance to AM in <i>V. parahaemolyticus</i>. All isolates were sensitive to higher-generation antibiotics such as amoxicillin-clavulanic acid (AMC), imipenem (IPM), and nalidixic acid (NA). The Multiple Antibiotic Resistance (MAR) index ranged from 0.105 to 0.421, with 29.79% to 53.85% of isolates classified as low-risk (MAR ≤ 0.2). Extensively drug-resistant (XDR) isolates were detected in all sites, notably in Contai and Haldia. Antibiotic Resistance Pattern Analysis (ARPA) revealed the highest resistance burden at Haldia. Resistant Quotient (RQ) analysis confirmed AM, PIP, and RA as the most resisted antibiotics. Pearson’s correlation indicated significant positive associations among several antibiotic pairs (e.g., CZ-CF, CF-SXT, SXT-TMP), and negative associations involving AM and multiple drugs, suggesting co-selection and cross-resistance mechanisms. Present findings highlight widespread MDR and occasional XDR in <i>Vibrio</i> species, with site specific variation, emphasizing the need for ongoing surveillance and antimicrobial stewardship to mitigate public health risks from aquatic environments.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Global research trends, intellectual structure, and emerging frontiers in trace metal accumulation in marine organisms: a comprehensive analysis (1981–2026)","authors":"Erkan Uğurlu,&nbsp;Önder Duysak","doi":"10.1007/s10452-026-10354-7","DOIUrl":"10.1007/s10452-026-10354-7","url":null,"abstract":"<div><p>Trace metal accumulation in marine organisms remains a major environmental and public health concern because metals persist in marine ecosystems, transfer through food webs and may reach humans through seafood consumption. Although research in this field has expanded substantially, its long-term development, intellectual structure, collaboration patterns and emerging research fronts have not been comprehensively mapped. This study provides a field-wide bibliometric assessment of 3039 publications retrieved from the Web of Science Core Collection, covering the period from 1981 to 15 February 2026. VOSviewer was used to analyze publication growth, source-level bibliographic coupling, citation networks, international co-authorship, co-cited references and author-keyword co-occurrence. Scientific output increased markedly after the mid-2000s and accelerated after 2015, reaching 242 publications in 2022 and 240 in 2025. China was the most productive country, whereas the USA and France showed particularly strong international collaboration. Marine Pollution Bulletin was the leading source in publication output and citation influence, while Science of the Total Environment, Environmental Pollution and Environmental Science and Pollution Research occupied central positions in the journal network. Co-citation analysis identified foundational studies linking metal bioaccumulation, seafood contamination and human health risk assessment. Keyword and overlay analyses revealed a thematic shift from conventional monitoring of metals in fish, sediments and bivalves toward integrated assessments of seafood safety, dietary exposure and human-health risk, with cancer risk, hazard index and estimated daily intake becoming increasingly prominent. These findings emphasize the need for strengthened environmental monitoring, whereas microplastic–metal interactions, stable-isotope applications and climate-related effects were interpreted as complementary emerging directions for future research. By integrating productivity, intellectual structure, collaboration and thematic evolution, this study provides a systematic reference for future Marine Pollution Research, monitoring priorities and risk-oriented Environmental Management.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148986441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Seasonal and hydrological dynamics of pharmaceutical occurrence and risk in a mixed-use subtropical river basin: insights from the Fortaleza River, Southern Brazil","authors":"Andressa Maiara de Almeida Machado,&nbsp;Adriana Carolina Gamboa,&nbsp;Fábio Marcelo Breunig,&nbsp;Hilda Hildebrand Soriani,&nbsp;Tandara Deitos,&nbsp;Cristiano Nunes dos Santos,&nbsp;Gabriel Baraldi Volpi,&nbsp;William Gaida,&nbsp;Genesio Mario Da Rosa","doi":"10.1007/s10452-026-10353-8","DOIUrl":"10.1007/s10452-026-10353-8","url":null,"abstract":"<div><p>This study provides the first evaluation of pharmaceutical contaminants in the Fortaleza River sub-basin, southern Brazil, a mixed agro-urban watershed characterized by overlapping domestic and agricultural pressures. Surface water samples were collected during three sampling campaigns conducted in December 2023, January 2024, and February 2024. Albendazole and caffeine were ubiquitously detected throughout the sampling period, suggesting recurrent inputs into the watershed, whereas paracetamol, lincomycin, and carbamazepine were detected during specific events, particularly in February, coinciding with rainfall pulses that likely enhanced surface runoff and the mobilization of urban and agricultural residues. The risk assessment indicated predominantly low-level exposure across the sampling period, punctuated by episodic increases in ecological risk. The widespread occurrence of caffeine suggests its potential usefulness as an indicator of untreated domestic wastewater inputs, whereas the widespread occurrence of albendazole may reflect inputs associated with veterinary practices and agricultural activities. Mixed risk indices provided additional insights into contamination hotspots that were not evident from conventional single-compound assessments, highlighting the value of integrating multiple ecotoxicological indicators with land-use and land-cover data to better understand contaminant dynamics in mixed-use watersheds.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10353-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 call for integrating aquatic perspectives more widely into studies of fruit–animal interactions","authors":"Davidson Gomes Nogueira,&nbsp;Alan P. Covich,&nbsp;Andréa Cardoso Araujo,&nbsp;Daniel Fajardo Nogueira Uchôa Fernandes,&nbsp;Francisco Valente Neto,&nbsp;Karen Cristine Bezerra da Silva Santos,&nbsp;Luiz Eduardo Roland Tavares,&nbsp;Matheus Fajardo Nogueira Uchôa Fernandes,&nbsp;M. Gunasekaran,&nbsp;Pierre-Cyril Renaud,&nbsp;Rudi Ricardo Laps,&nbsp;S. Sundar,&nbsp;Taina Boschi,&nbsp;Vanessa Silva das Chagas,&nbsp;Willian Nassar Moreira Eduardo,&nbsp;Fabio de Oliveira Roque","doi":"10.1007/s10452-026-10345-8","DOIUrl":"10.1007/s10452-026-10345-8","url":null,"abstract":"<div><p>Fleshy fruits are a key resource for many terrestrial and aquatic animals, especially in tropical rainforests and rivers. Frugivory is well documented as a fundamental interaction between plants and animals, contributing to seed dispersal and the maintenance of biological diversity. Although fruit falling from riparian plants plays important roles in aquatic resource inputs, these ecosystem processes are not widely studied which can lead to geographical and functional trait biases. We demonstrated this gap of information in a literature survey using a bibliographical analysis. We found clear geographical biases towards more frequent studies in the Americas, especially in Brazil, and shortfalls in other tropical areas, such as Asian and African tropical regions. In contrast, studies on fruit-animal interaction in tropical terrestrial ecosystems are far more frequent than those in aquatic ecosystems. Some approaches and concepts originally developed for terrestrial studies can be applied to tropical freshwater and marine ecosystems, offering new insights into their functioning. This integration can foster a more comprehensive understanding of terrestrial–aquatic linkages while promoting greater collaboration and equity in research partnerships.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10345-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Microzooplankton community dynamics across diverse coastal water ecosystems of the Andaman Island","authors":"T. M. Manu,&nbsp;N. V. Madhu,&nbsp;E. Jithin Prasad,&nbsp;Praveena Sudheesh,&nbsp;Amala Swetha Renny,&nbsp;P. P. Hafish Mohammed,&nbsp;T. Muhammed Nishad","doi":"10.1007/s10452-026-10357-4","DOIUrl":"10.1007/s10452-026-10357-4","url":null,"abstract":"<div><p>Microzooplankton (MZP; 20–200 µm), comprising predominantly heterotrophic and mixotrophic plankton, constitute a key component of the microbial food web, linking the microbial loop with the classical food chain. The present study investigated a comparative assessment of spatial variability in MZP abundance, composition and carbon biomass in the coastal waters off Port Blair (PB) and Neil Island (NI), separated by ~ 34 km in the Andaman Sea, during the fall intermonsoon (October 2024). Marked spatial differences in hydrographic and hydrochemical conditions between the two study domains were reflected in their biological characteristics, particularly phytoplankton biomass (chlorophyll <i>a</i>) and MZP communities, specifically protozoans. The relatively mesotrophic waters off PB, characterized by higher nitrate concentrations (mean 0.87 ± 1.3 µM) and chlorophyll <i>a</i> (mean 1.17 ± 0.77 mg m⁻³), supported higher MZP abundance, biovolume, and carbon biomass than the oligotrophic waters surrounding NI. Protozoans dominated the MZP assemblages in both regions, although their community composition differed substantially. Dinoflagellates dominated the MZP community at PB (98.8%), whereas ciliates were predominant around NI waters (51.8%). Metazoan MZP, represented mainly by copepod nauplii and rotifers, formed a minor fraction (0.4–3.4%) of total MZP abundance in both regions. The spatial differences in MZP abundance and composition were reflected in the carbon biomass, with the relatively higher biomass (mean 180.92 ± 152.17 µgC L⁻¹) at PB primarily associated with large-sized taxa, particularly dinoflagellates and copepod nauplii. In contrast, MZP biomass at NI was comparatively lower (mean 0.938 ± 0.813 µgC L⁻¹) and was contributed predominantly by ciliates despite their relatively low abundance. The prevalence of larger MZP taxa and elevated carbon biomass at PB may be attributed enhanced phytoplankton growth under relatively nutrient-enriched conditions. Overall, the contrasting hydrographic and hydrochemical characteristics of the two coastal environments appeared to have regulated phytoplankton biomass and, consequently, the abundance, taxonomic composition, and carbon biomass of MZP communities. These findings emphasize the pronounced spatial heterogeneity of MZP communities even across relatively short geographic distances in tropical coastal waters.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"An assessment of the usefulness of plankton-based indices for trophic state in two connected semi-arid Algerian reservoirs","authors":"Lidia Baitiche,&nbsp;Safia Akli‑Bidi,&nbsp;Juan M. Soria,&nbsp;Joanna Rosińska,&nbsp;Mohammed Mebarki,&nbsp;Manuel Muñoz‑Colmenares","doi":"10.1007/s10452-026-10346-7","DOIUrl":"10.1007/s10452-026-10346-7","url":null,"abstract":"<div><p>Reservoirs in semi-arid regions are increasingly exposed to eutrophication driven by nutrient enrichment, hydrological alteration and climate variability. In Algeria, water-quality monitoring still relies mainly on physicochemical parameters, whereas biological indicators remain underused. This study evaluates the usefulness of plankton-based indices for assessing trophic state in two connected but also contrasting reservoirs in northwestern Algeria: Cheliff, a shallow diversion reservoir, and Kerrada, a deeper storage reservoir. Water samples were collected monthly from November 2020 to October 2022. The trophic state of reservoirs was compared with different phytoplankton and zooplankton-based metrics. Cheliff was classified as a reservoir with a higher trophy of water (eutrophic to hypereutrophic). In contrast, Kerrada reservoir, which receives water from Cheliff, was classified as a reservoir with lower trophy (mesotrophic). Multivariate analysis indicated that nutrient enrichment, turbidity and particulate matter structured Cheliff plankton communities, while depth and water transparency were the main drivers in Kerrada. Phytoplankton indices reflected the trophic contrast while zooplankton-based metrics showed variable performance due to regional environmental influences such as temperature and predation. Our findings demonstrate the potential of plankton-based metrics to provide complementary information on trophic conditions in contrasting reservoirs. However, differences in absolute trophic-state classification highlight the need for regional calibration of zooplankton-based indices before their application in routine monitoring of semi-arid reservoirs. Nevertheless, this study provides a baseline for Algerian reservoirs.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10346-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148927048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"The role of social-environmental factors on Procambarus clarkii locomotion capabilities","authors":"Daniel Oliveira,&nbsp;Marta C. Soares,&nbsp;Pedro Anastácio,&nbsp;Filipe Banha","doi":"10.1007/s10452-026-10350-x","DOIUrl":"10.1007/s10452-026-10350-x","url":null,"abstract":"<div><p><i>Procambarus clarkii</i> is a prominent example of a successful invasive species, and its locomotion ability is known to be a key characteristic. As such, the goal of this study is to deepen the knowledge of <i>P. clarkii</i> locomotion capabilities. To achieve this, two laboratory experiments were conducted to address the crayfish’ locomotion, namely their speed, under controlled conditions. The first experiment tested the effect of the interaction of temperatures (16 °C and 22 °C), food (presence or absence) and photoperiod (light or dark). The second experiment tested the effects of pairing two individuals of the same or opposite sex and of different or similar sizes. Results show that when exposed to the higher temperature and in the absence of food, crayfish increased their speed. The smallest crayfish have the lowest mean velocity values, increasing up to individuals with cephalothorax lengths between 25 and 30 mm, after which speeds remained comparable with no significant differences. When paired, size differences between crayfish does not affect velocity. Sex also did not affect velocity, neither when alone nor when paired. These results suggest that <i>P. clarkii</i> rate of spread may be greater in areas at 22 °C. However, if provided with a reliable food source, crayfish may disperse less. Still, more research is needed to expand our understanding of which factors could contribute to <i>P. clarkii</i> dispersive capabilities, as this may prove important in formulating new plans and strategies to limit its impacts.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Aquatic bryophytes and freshwater metal(loid)s: methods, applications, and evidence base","authors":"Yuanyuan Zhou,&nbsp;Qiang Wei,&nbsp;Zhihui Wang,&nbsp;Zhaohui Zhang","doi":"10.1007/s10452-026-10355-6","DOIUrl":"10.1007/s10452-026-10355-6","url":null,"abstract":"<div><p>Inputs of metals and metalloids to freshwater ecosystems are highly variable, and their speciation can shift rapidly; therefore, snapshot water samples often fail to represent long-term exposure. Aquatic bryophytes can integrate metal(loid) exposure through surface binding, ion exchange, and tissue accumulation, generating time-integrated biological signals that support source apportionment, spatial comparisons, and monitoring-based assessment. Following the PRISMA framework, we combined a systematic review with bibliometric analysis to build an evidence base using the Web of Science Core Collection and citation chasing. We synthesized relevant studies from the past decade and assessed research output, thematic structure, and methodological characteristics. The literature is largely concentrated in Europe, with study settings dominated by running-water systems and controlled exposure designs. Both the bryophyte taxa used and the target elements are focused on a limited set of commonly adopted groups and frequently investigated elements. Monitoring signals are primarily reported as tissue concentrations and enrichment-related indices, while the proportion of studies addressing physiological and biochemical responses and removal-performance evaluation has increased in recent years. Cross-study comparability is mainly constrained by differences in pretreatment and particulate-matter control, sample preservation and exposure duration, and the completeness of background water-chemistry reporting. On this basis, we clarify the roles of aquatic bryophytes in freshwater metal(loid) monitoring and in verifying the effectiveness of mitigation or remediation actions, highlight that between-study heterogeneity is closely linked to inconsistent methodological reporting and contextual information, and provide a foundation for future evidence synthesis across broader habitats and within cross-compartment comparison frameworks.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Multi-host–parasitoid interactions in marine phytoplankton blooms: temporal coexistence, succession and benthic–pelagic coupling","authors":"Esther Garcés,&nbsp;Elisabet Alacid,&nbsp;Natàlia Timoneda,&nbsp;Nagore Sampedro,&nbsp;Jordina Gordi,&nbsp;Laura Arin,&nbsp;Albert Reñé","doi":"10.1007/s10452-026-10352-9","DOIUrl":"10.1007/s10452-026-10352-9","url":null,"abstract":"<div><p>Parasitoid communities associated with summer dinoflagellate blooms in the north-western Mediterranean showed temporal partitioning, taxon-specific dynamics and contrasting associations with the water column and sediments. Several zoosporic parasitoid lineages co-occurred, including perkinsids, chytrids and Syndiniales such as <i>Amoebophrya</i> and <i>Euduboscquella</i>-like taxa. Members of the <i>Amoebophrya</i> complex (Dino-Group-II clades 2 and 4) had the highest relative sequence abundances in the water column, and their increases coincided with peaks or declines in dominant host populations, a pattern consistent with density-responsive infection dynamics. Perkinsids also exhibited patterns consistent with density-responsive dynamics, with peaks near declines in host abundance; they were detected in both the water column and sediments. Chytrids occurred sporadically, with low infection prevalence in the water column and only occasional detection in sediments. These contrasting patterns were consistent with temporal differentiation among host–parasitoid interactions associated with differences in host tracking, infection timing and habitat use. Overall, infection prevalence remained low and parasitoid peaks were not consistently associated with bloom termination, although persistent, low-intensity infections may have influenced competitive interactions among hosts and species coexistence. Differences in temporal occurrence and compartment associations may facilitate coexistence among parasitoid lineages. Sediments may act as reservoirs, particularly for perkinsids, suggesting that benthic–pelagic coupling contributes to the structure of marine parasitoid communities.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10352-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148926547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}