Limnologica最新文献

{"title":"Multi-year movements of potamodromous cyprinid species within a highly anthropized river assessed using RFID-equipped fishways","authors":"Stéphane Tétard ,&nbsp;Anthony Maire ,&nbsp;Michaël Ovidio ,&nbsp;Jean-Philippe Benitez ,&nbsp;Frédéric Schaeffer ,&nbsp;Marie Coll ,&nbsp;Romain Roy","doi":"10.1016/j.limno.2025.126236","DOIUrl":"10.1016/j.limno.2025.126236","url":null,"abstract":"<div><div>Movements of potamodromous fish are poorly understood, especially in large rivers, because studies often focus on fishway evaluation and diadromous species. Here, we assessed the movements of 808 fish of five potamodromous species (Barbel, <em>Barbus barbus</em>; Common bream, <em>Abramis brama</em>; Nase, <em>Chondrostoma nasus;</em> Asp, <em>Leuciscus aspius</em> and chub <em>Squalius cephalus</em>) over 14 years in a highly anthropized river system, the Rhine River, where hydropower plants were progressively equipped with fishways including RFID antennas. The objectives of the study were 1) to characterize long-term and large-scale individual movement patterns of five potamodromous fish species 2) to assess inter- and intra-specific variations based on quantitative movement metrics and 3) to create a typology of individuals based on their movements. Results showed that, despite high intra-specific variability, the inter-specific differences were strong enough to highlight long-term and large-scale species-specific behaviors. Breams exhibited movements that occurred essentially during spawning migration period and at the reach scale. In contrast, barbels were more active, with more movements outside their spawning migration period, showed more large-scale and downstream movements, and used navigation locks more often than other species. For this species, the maximum distance between the two furthest recorded positions at the basin scale was exceptionally high (max = 155 km). We conclude that potamodromous species undoubtedly perform large-scale movements, which are characterized by both species-specific and common features. Therefore, efforts need to be made to better consider their ecological needs and swimming capabilities when planning and designing effective fishways for the diverse range of species that move within river systems.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126236"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143592541","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":"Macroalgal (Spirogyra) nutrient and chlorophyll stoichiometric response to nutrient concentrations in a tropical river","authors":"Simon Townsend","doi":"10.1016/j.limno.2025.126253","DOIUrl":"10.1016/j.limno.2025.126253","url":null,"abstract":"<div><div>A tenet of ecological stoichiometric theory is that autotroph stoichiometry is normally responsive to the variable supply of environmental resources of nutrients and light. The extent of autotroph stoichiometric plasticity is likely to vary with environmental resource variability, autotroph species, growth form and physiological needs. A field study was conducted in the Daly River catchment in the Australian wet/dry tropics to test the hypothesis that the carbon (C), nitrogen (N), phosphorus (P) and chlorophyll <em>a</em> (Chl<em>a</em>) stoichiometry of the riverine, filamentous macroalga <em>Spirogyra fluviatilis</em> is responsive to concentrations of dissolved inorganic nitrogen (DIN), dissolved phosphorus and light, as well as temperature which can influence autotroph stoichiometry indirectly. Linear regressions were undertaken between stoichiometric dependent variables and independent environmental variables. With increased DIN concentrations, <em>S. fluviatilis</em> percentage content of N, C and Chl<em>a</em> and molar N:P ratios increased, whilst C:Chl<em>a</em> ratios decreased. No effect of light or temperature on algal stoichiometry was detected. The regressions, however, only explained one-third or less of <em>S. fluviatilis</em> stoichiometric variability, due most probably to methodological constraints, cell nutrient storage and uptake dynamics, and possibly undetected light and temperature effects. <em>S. fluviatilis</em> demonstrated N plasticity in response to DIN concentrations, to enrich the alga with N under relatively high DIN concentrations, enhancing its nutritional quality for herbivores and omnivores. This study complements others which have demonstrated macroalgal P plasticity. Stoichiometric variables can be used to monitor the impact of nutrient pollution and identify the stoichiometric basis for ecosystem-wide implications of nutrient pollution.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126253"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882138","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 variation of zooplankton community structure between two subtropical reservoirs of contrasting hydraulic retention time","authors":"Julieta Cuevas,&nbsp;Guillermo Chalar,&nbsp;Sol De Giacomi,&nbsp;Mauricio González-Piana,&nbsp;Carmela Carballo","doi":"10.1016/j.limno.2025.126249","DOIUrl":"10.1016/j.limno.2025.126249","url":null,"abstract":"<div><div>Reservoirs significantly influence aquatic ecosystems by modifying river flows and forming artificial lakes. This study examines the zooplankton communities in two Uruguayan connected reservoirs, Bonete and Baygorria, focusing on the impact of different water residence times. Upstream Bonete has a long retention time of 140 days, whereas Baygorria has a short retention time of 3 days. The investigation was conducted over 2019–2020, involving ten sampling events at three depths. Physical and chemical variables, including temperature, dissolved oxygen, pH, turbidity, chl-a, total nitrogen, total phosphorus, and organic matter concentrations were measured. Zooplankton biomass and community structure were analyzed through Redundancy Analysis (RDA). Results indicated higher zooplankton biomass in Bonete, with significant seasonal and vertical variations linked to environmental factors. Temperature, chl-a concentration, and water residence time were identified as key determinants. The study highlights the role of water residence time in shaping zooplankton communities. The findings underscore the need for tailored management strategies to address the ecological dynamics of reservoirs.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126249"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860622","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":"Stable isotope analysis reveals inter- and intraspecific trophic relationships of the endangered Central American river turtle in southern Mexico","authors":"Eduardo Reyes-Grajales ,&nbsp;Matteo Cazzanelli ,&nbsp;Nora P. López-León ,&nbsp;Alejandra Sepúlveda-Lozada ,&nbsp;Luis Antonio Muñoz Alonso ,&nbsp;Miriam Soria-Barreto ,&nbsp;Rocío Rodiles-Hernández","doi":"10.1016/j.limno.2025.126238","DOIUrl":"10.1016/j.limno.2025.126238","url":null,"abstract":"<div><div>Trophic ecology studies enhance our understanding of species relationships within communities and ecosystems, providing critical information for conservation programs targeting endangered species. The Central American river turtle (<em>Dermatemys mawii</em>) is one of the most critically endangered testudine species worldwide, yet its trophic ecology has been scarcely studied. Based on stable isotope analysis (<em>δ</em>¹³C and <em>δ</em>¹⁵N), we applied community-wide metrics and stable isotope mixing models to assess the intraspecific variation in the isotopic niche of <em>D. mawii</em> among different age and sex categories, its interspecific relationships with dominant fish species, and the relative contribution of basal resources to selected aquatic consumers in an oxbow lake in southern Mexico. The community-wide metrics suggested that <em>D. mawii</em> juveniles consumed a greater variety of food resources and/or had access to a wider variety of habitats than adults, regardless of sex. Through the mixing models we detected that the aquatic plant <em>Pistia stratiotes</em> was the main dietary source for adult females, while riparian plants were more important for juveniles and adult males, suggesting intraspecific niche partitioning. We also identified distinct energy pathways for <em>D. mawii</em> and fish, with turtles relying on vascular plants (both riparian and aquatic) while fish primarily depended on seston. Our findings suggest that <em>D. mawii</em> may play an important role in nutrient cycling and potentially regulate the presence of the free-floating macrophyte <em>P. stratiotes</em> at the study site.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126238"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143551493","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":"Hydrochemistry, microbial ecology and physiological-biochemical properties of isolated bacteria of Tyrma hot spring (Far East of Russia)","authors":"E.G. Lebedeva ,&nbsp;I.V. Bragin ,&nbsp;A.A. Pavlov ,&nbsp;D.A. Rusakova","doi":"10.1016/j.limno.2025.126255","DOIUrl":"10.1016/j.limno.2025.126255","url":null,"abstract":"<div><div>In this study, we investigated for the first time the geochemistry, abundance, diversity and some physiological and biochemical properties of cultured bacterial communities inhabiting the Tyrminskie thermal springs (Far East, Russia). The thermal waters from the Tyrma Spring are characterized by a low mineralization level (less than 0.25 g/L), an alkaline pH medium (pH=9.4) and a fluoride (up to 10 mg/L) and bicarbonate sodium-based composition. In these thermal waters and associated microbial mats, low numbers of physiological groups of microorganisms were noted, with a predominance of heterotrophically active nitrifying bacteria in the water and silicate- and sulfate-reducing bacteria in the mats. The average air temperature during the winter was −7°C. The temperature of the spring water during sampling was recorded between 31.8 and 36.8°C. These temperatures favor the presence of mesophilic and thermotolerant microorganisms in the thermal waters, which is consistent with the identified bacterial genera. Bacterial strains isolated from the thermal waters were identified using the 16S rRNA gene. The isolated bacterial strains belong to the phyla <em>Firmicutes, Proteobacteria</em> and <em>Actinobacteria</em>. Bacterial strains of thermal waters were represented by the genera <em>Bacillus, Ochrobactrum, Brevibacterium, Achromobacter</em>. Shannon and Simpson ecological indices showed low bacterial diversity and their uniform distribution in the community. It should be noted that this assay is based solely on cultured microorganisms using standard culture media. According to canonical correspondence analysis the greatest influence on bacterial diversity was exerted by the elements: calcium, sodium, fluorine, and hydrocarbonates. The isolated bacteria were able to metabolize a wide range of carbohydrates and alcohols, although they fermented lactose poorly. Cultures of the <em>Bacillus</em> genus show the greatest sugar-metabolizing activity. The isolates are capable of producing extracellular enzymes, indicating their potential industrial applications.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126255"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922941","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":"Short-term and seasonal dynamics of planktonic protist community (Alveolata, Ciliophora) in a neotropical urban lake, Maringá - Paraná, Brazil","authors":"Matheus Henrique de Oliveira de Matos ,&nbsp;Loiani Oliveira Santana ,&nbsp;Felipe Rafael de Oliveira ,&nbsp;Melissa Progênio ,&nbsp;Edilaine Corrêa Leite ,&nbsp;João Vitor Bredariol ,&nbsp;Luiz Felipe Machado Velho","doi":"10.1016/j.limno.2025.126251","DOIUrl":"10.1016/j.limno.2025.126251","url":null,"abstract":"<div><div>The aim of this study was to investigate the temporal dynamics of planktonic ciliate communities, based on daily fluctuations between different hydrological periods in a eutrophic urban lake located in the city of Maringá, Paraná, Brazil. We hypothesized that abundance would vary more between collection days than between hydrological periods, whereas richness and selection would vary more between hydrological periods than collection days. Ciliated protists were sampled during two distinct hydrological periods: a dry period in September 2018 and a rainy period in January 2019. Sampling was conducted 10 times during each period, with collections every 3 days over 30 days. Throughout the study, 84 morphospecies were recorded. The Prostomatida group dominated in both periods, contributing to 37.1 % of the total abundance in the dry season and 74 % in the rainy season. Other representative groups included Peritrichia (35.7 % in the dry season) and less abundant taxa such as Nassulida, Colpodea, and Cyrtophorida (8.5 % in the rainy season). Abundance varied significantly in the short term (i.e. between sampling days) and between hydrological periods (dry and rainy), with higher values during the rainy season (mean ± SE: 1250 ± 150 Ind.L⁻¹) compared to the dry season (mean ± SE: 850 ± 120 Ind.L⁻¹). Differences in richness were not significant between the hydrological periods. However, there was significant daily variation during the rainy season. Species composition differed only between hydrological periods, as predicted. This study shows that the hydrological regime significantly influences ciliate communities, with variations in richness, abundance, and composition occurring over short periods. Therefore, it is recommended that these organisms be analyzed continuously, across short intervals, and seasonally. This approach is necessary because their responses to environmental monitoring may vary depending on the sampling period, given their high sensitivity to environmental changes.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126251"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848646","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":"It’s getting tight – How colmation influences the sediment fauna and why we might fail in restoring our streams","authors":"Teresa Luftensteiner ,&nbsp;Alcides Aybar Galdos ,&nbsp;Markus Noack ,&nbsp;Holger Schindler ,&nbsp;Heide Stein ,&nbsp;Hans Jürgen Hahn","doi":"10.1016/j.limno.2025.126246","DOIUrl":"10.1016/j.limno.2025.126246","url":null,"abstract":"<div><div>Restoration of streams to a good ecological status, as required by the European Water Framework Directive (WFD), has been slow, if not failing. Colmation, the clogging of hyporheic interstices by fine sediments, could be one cause for this failure by negatively influencing hyporheic invertebrates. Therefore, this study analysed the hyporheic communities in six German rivers representing all five ecological status classes using ecological, colmation- and grain size analysis. The study revealed that I) the amount of fine sediment and level of colmation had a significant impact on the taxa number and the abundance of hyporheic meiofauna, II) increased colmation led to a shift from coarse- to fine sediment dweller-dominated hyporheic communities, III) hyporheic communities were impacted most by land use in catchments, fine sediment levels, and colmation, and IV) faunal patterns associated with colmation corresponded to the ‘general degradation’ classification defined by the WFD. Presumably elevated fine sediment loads from open land use types, and thereby increasing colmation-levels, altered the porosity and the size of voids. This led to a loss of habitats within the sediments which influenced hyporheic invertebrates. While substrate conditions are important for benthic communities, they are especially critical for hyporheic fauna, which responds particularly strongly to changes in sediment structure. Oxygen and nutrient provision are influenced by sediment structure and further impact the hyporheic organisms. Consequently, the loss of functioning communities led to the deterioration of the ecological status of rivers. Colmation should therefore be considered when implementing the WFD.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126246"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684448","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":"Aquatic macroinvertebrates as indicators of water quality in the wetlands of the Chimborazo Wildlife Reserve – Ecuador","authors":"Juan Carlos Carrasco-Baquero ,&nbsp;Veronica Caballero-Serrano ,&nbsp;Daisy Carolina Carrasco-López ,&nbsp;Fernando Romero-Cañizares ,&nbsp;David Alejandro León-Gualán ,&nbsp;Jorge Daniel Córdova-Lliquin ,&nbsp;Rufino Vieira-Lanero ,&nbsp;Fernando Cobo-Gradín","doi":"10.1016/j.limno.2025.126234","DOIUrl":"10.1016/j.limno.2025.126234","url":null,"abstract":"<div><div>The Chimborazo Wildlife Reserve (CR), located in central Ecuador, is home to 16 wetlands distributed in the provinces of Bolivar (7), Tungurahua (4) and Chimborazo (5), with altitudes ranging between 3 825 and 4 240 m above sea level (m.a.s.l.). The objective of the study was to analyse the ecological quality of the reserve's wetlands. Sampling units were established at three points per wetland to measure the physico-chemical variables of the water, which helped to validate the results obtained through macroinvertebrates, since if these organisms determine the ecological state of the wetlands, the physico-chemical analyses determine the reasons for pollution. Two methods were used to collect macroinvertebrates: direct capture and Surber net sampling. Three indices were calculated: Biological Monitoring Working Group for Colombia (BMWP/Col), Ephemeroptera, Plecoptera and Trichoptera (EPT), and Multimetric Index of Ecological Status for High Andean Rivers (IMEERA). A total of 8664 individuals belonging to 7 Classes, 12 Orders and 23 Families were identified, with the Family Hyalellidae being the most abundant. The physico-chemical variables indicated that the wetland water is suitable for agricultural irrigation and livestock use, but definitely not for human consumption. Similarly, the results of the 3 biological indices suggest that the waters should be classified as polluted and that therefore the catchment areas supplied by these ecosystems also constitute polluted aquatic systems. Hence the importance of adopting urgent and decisive measures for the conservation of these ecosystems, which constitute the main source of water supply for the communities that cohabit them.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126234"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578629","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":"Reproductive ecology of three rheophilic fish species in the Austrian Danube River system: Insights into the spawning of Chondrostoma nasus, Barbus barbus, and Vimba vimba, and the larval development of C. nasus in the River Traisen","authors":"Daniel Pelz ,&nbsp;Thomas Friedrich ,&nbsp;Bernhard Zeiringer ,&nbsp;Thomas Hein ,&nbsp;Günther Unfer","doi":"10.1016/j.limno.2025.126250","DOIUrl":"10.1016/j.limno.2025.126250","url":null,"abstract":"<div><div>This study investigates the reproductive ecology of three rheophilic fish species (<em>Chondrostoma nasus, Barbus barbus</em> and <em>Vimba vimba</em>) in the River Traisen, Austria. The main objectives were to describe the spawning sites of these species and to describe the development of nase eggs and larvae in situ. The study also examines the immigration patterns from the Danube into the Traisen in relation to discharge and water temperature. The fieldwork was carried out between March and June 2020 in the lower reaches of the Traisen (11 km renaturalized river section and 4 km residual water section). In addition to visual counts, a drone (UAV) and underwater cameras were used to quantify and document spawning behavior. At the spawning sites the parameters water depth, flow velocity, temperature and substrate type were recorded. The spawning site characteristics of nase and barbel were consistent with previous studies. The vimba bream spawned at a water temperature of 13–17 °C, a water depth of 39 ± 9 cm and a flow velocity of 93 ± 19 cm/s and was described for the first time for a Central European river population. The development of the nase from eggs to fry was documented in the field; the incubation of the eggs lasted 30 days with a mean water temperature of 11.4 °C. Only a few barbel and vimba bream used the restored section for spawning, the majority of both and all nase spawned in the residual flow stretch upstream, where they were prevented from migrating further due to the low discharge.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126250"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834954","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 hyphomycetes show pollution-induced community tolerance in nitrogen enrichment experiment","authors":"Enzo V. Pereyra ,&nbsp;Sebastián Kravetz ,&nbsp;Julieta Lucero ,&nbsp;Luciana Cibils-Martina","doi":"10.1016/j.limno.2025.126254","DOIUrl":"10.1016/j.limno.2025.126254","url":null,"abstract":"<div><div>Freshwater ecosystems face significant threats worldwide, particularly from land use changes that impact biodiversity and ecosystem functions in rivers and streams. Essential elements such as carbon, nitrogen, and phosphorus play crucial roles in these ecosystems by directly influencing microbial activity and organic matter processing. This study examines the impact of increased nitrogen levels on the diversity and reproduction of aquatic hyphomycetes associated with decomposing leaf litter in the Chocancharava River, Córdoba, Argentina. Through a microcosm experiment, the objectives were to identify colonizing fungal species, analyze structural variables of the fungal community, and assess variations in sporulation rates and leaf litter decomposition rates of <em>Salix</em> sp<em>.</em> Contrary to expectations, no significant differences in fungal community structure were observed between the control and nutrient-enriched treatments. The increased nitrogen concentrations did not enhance fungal community growth, suggesting possible adaptation to chemical stressors consistent with the concept of pollution-induced community tolerance. These findings provide valuable insights into aquatic ecosystem resilience to nutrient enrichment, highlighting the importance of understanding microbial responses for effective ecosystem management.</div></div>","PeriodicalId":51110,"journal":{"name":"Limnologica","volume":"112 ","pages":"Article 126254"},"PeriodicalIF":2.0,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143887397","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}