Ecohydrology最新文献

{"title":"Ecological and Toxicological Impacts of Titanium Dioxide Nanoparticles on the Freshwater Clam Caelatura nilotica and Recovering Role of Dimercaptosuccinic Acid, Gizay Village, Menoufia Governorate, Egypt","authors":"Sherin K. Sheir,&nbsp;Azza H. Mohamed,&nbsp;Gamalat Y. Osman,&nbsp;AbdElhafez R. AbdElhafez,&nbsp;Hoda H. Abdel-Azeem","doi":"10.1002/eco.70058","DOIUrl":"https://doi.org/10.1002/eco.70058","url":null,"abstract":"<div>\u0000 \u0000 <p>The increasing release of titanium dioxide nanoparticles (TiO₂ NPs) into aquatic environments raises concerns about their ecological and hydrological implications. This study investigated the impact of TiO₂ NPs on the freshwater clam <i>Caelatura nilotica</i>, a bioindicators for water pollution in the Nile ecosystem, focusing on genetic, immunological and histological responses of exposed clams that influence water quality and ecosystem stability. Parameters assessed include DNA damage in gills, haemocyte dynamics, neutral red uptake, and histological and ultrastructural changes in gills’ tissues. Clams were continuously exposed to 25 and 150 μg/L of TiO₂ NPs, with and without 200 μg/L of dimercaptosuccinic acid (DMSA), over 28 days. The high TiO₂ NP concentrations (150 μg/L) resulted in significant DNA damage (<i>p</i> &lt; 0.05), reduced haemocyte counts and altered granulocyte dynamics, all of which can impair natural filtration processes critical to hydrological balance. Severe histological damage, such as cilia erosion and blood deprivation in gills, was observed at the high TiO₂ NP concentration, as confirmed by TEM analysis. Addition of DMSA alongside TiO₂ NPs during clam exposure mitigated these harmful effects, improving gills structure and function. These findings highlight the potential risks of TiO₂ NP contamination on aquatic ecosystems and underscore the protective role of DMSA in maintaining ecological and hydrological integrity.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 4","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206342","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":"Effectiveness of Predicting Event-Level Interception Losses Across Diverse Vegetated Sites Using Statistical Models","authors":"Abigail G. Sandquist,&nbsp;Stephen P. Good,&nbsp;Gabriel Barinas,&nbsp;Scott T. Allen","doi":"10.1002/eco.70050","DOIUrl":"https://doi.org/10.1002/eco.70050","url":null,"abstract":"<div>\u0000 \u0000 <p>Understanding evaporation from wet canopies across ecosystems is challenged by its spatiotemporal variability and associated observational challenges. Precipitation and throughfall were measured at 22 sites of the National Ecological Observatory Network using consistent methodologies across diverse climates and ecosystems, providing a novel opportunity to examine the performance of statistical models in predicting interception loss from meteorological and canopy-structure data. We used those data to quantify event-level interception losses and found wide variation; median interception loss of small storms (&lt; 10 mm) was 37.7% (39% inter-quartile range), and of large storms (&gt; 50 mm) was 19.8% (20% interquartile range). We found storm gross-precipitation depth was the most important variable for predicting the amount of interception loss (predicting ~70% of the variation), followed by mean canopy height and air temperature. Storm gross-precipitation depth was also an important predictor of interception loss as a percent of storm depth, but much less variation was explained (<i>R</i>² = 0.11, RMSE = 24%). Prediction of percent interception loss improved (<i>R</i>² = 0.32 and RMSE = 19%) by including additional meteorological and vegetation structure characteristics in a random forest model. In addition to demonstrating the greater importance of storm traits over vegetation traits in predicting event interception losses, this analysis showed that relationships between storm traits and interception losses differed among sites; these inconsistent relationships across sites limited the ability for any statistical model to perform well in predicting event-level interception losses across sites, which may justify the use of alternative approaches (e.g. process-based models).</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140715","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":"Hydrological Conditions and Climatic Factors Shape Waterbird Functional Diversity in a Ramsar Site of Argentina","authors":"Jorgelina P. Asmus,&nbsp;Marcelo Romano,&nbsp;Ignacio M. Barberis","doi":"10.1002/eco.70053","DOIUrl":"https://doi.org/10.1002/eco.70053","url":null,"abstract":"<div>\u0000 \u0000 <p>With global biodiversity in decline, functional biodiversity metrics help link biodiversity changes to ecosystem functioning. In wetlands, extreme events like droughts and floods challenge waterbirds, affecting survival and reproduction. At Pampean lakes in Argentina, hydrological fluctuations are significant. We examined how waterbird functional diversity responds to these changes at the Melincué Ramsar Site, considering seasonality and whether environmental filtering or competition shapes community structure. Using waterbird counts from 1992 to 2019, we calculated functional richness, evenness, divergence and dispersion based on species traits. We employed general linear models and beta distance to assess relationships between functional diversity indices and hydrological variables, and explore assembly patterns. We recorded 71 waterbird species. Functional richness decreased by nearly 26% in drier years, indicating a loss of trait diversity under reduced hydrological conditions. Evenness correlated positively with precipitation and negatively with lake area, peaking at intermediate Standardized Precipitation-Evapotranspiration Index over a 12-month period (SPEI 12) values. Divergence increased with precipitation but was lowest at intermediate SPEI 12 values and highest in summer. Dispersion peaked at intermediate lake areas, increasing with summer precipitation but decreasing with winter precipitation. Trait-convergence assembly patterns (TCAP) analysis showed community structure significantly changed with lake area, was marginally significant for SPEI 12 and not significant for precipitation. Maximum functional diversity occurred when the lake was neither too high nor too low and seasonality influenced functional diversity responses. These results highlight environmental filtering as the primary driver of waterbird assembly over time and underscore the need to incorporate hydrological dynamics into wetland conservation planning.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144140714","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":"Dispersal and Kinship Patterns of a Pelagic-Spawning Riverine Fish Highlight the Value of Connectivity Over Large Spatial Scales","authors":"Laura E. Michie,&nbsp;Katherine A. Harrisson,&nbsp;Meaghan L. Rourke,&nbsp;David A. Crook,&nbsp;Ivor Stuart,&nbsp;Iain Ellis,&nbsp;Clayton P. Sharpe,&nbsp;Gavin L. Butler,&nbsp;Jason D. Thiem","doi":"10.1002/eco.70032","DOIUrl":"https://doi.org/10.1002/eco.70032","url":null,"abstract":"<p>Managing fish populations in regulated rivers requires an understanding of the spatial and temporal scale of their dispersal, the locations of key spawning and nursery habitats and the hydraulic processes that interplay with their life history. Golden perch (<i>Macquaria ambigua</i>), an Australian freshwater pelagic-spawning fish, highlights the worldwide challenges of managing riverine species that rely on hydraulic conditions to sustain critical metapopulation processes. This study aimed to quantify the spatial scale of early life history golden perch dispersal after a drought-breaking in-channel flow event in early 2020 in a regulated lowland river. Otolith microchemistry (⁸⁷Sr/⁸⁶Sr) and single nucleotide polymorphisms (SNPs) determined natal origins and sibling relationships, respectively, of young-of-year (YOY) caught in a floodplain nursery with larval fish captured upstream. For fish collected in the floodplain nursery, dispersal distances ranged to ~1600 km. Otolith microchemistry attributed 52% of YOY as localised in origin, 44% as originating in the midcatchment and 4% from the most upstream sample locations. Genetic analyses identified a full-sibling pair captured 900 km apart and 31 half-sibling pairs that linked YOY to larval fish captured at a diversity of upstream sites. Our study highlights the range of spatial scales over which ELH dispersal can occur for golden perch and emphasises the importance of interconnected flowing river habitats in sustaining metapopulation processes. We illustrate the positive results that increased riverine connectivity can yield for fish with similar life history strategies.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144135755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fit for Purpose—Analyses of Macroinvertebrate Communities for Environmental Flow Assessment","authors":"Ewelina Szałkiewicz,&nbsp;Szymon Jusik,&nbsp;Tomasz Kałuża,&nbsp;Rui Aleixo,&nbsp;Mateusz Grygoruk","doi":"10.1002/eco.70049","DOIUrl":"https://doi.org/10.1002/eco.70049","url":null,"abstract":"<div>\u0000 \u0000 <p>Environmental flow assessment is crucial for sustainable water management. In assessing environmental flows using the most common methods, for example, habitat suitability modelling (HSM), it is assumed that the distribution of aquatic organisms is driven by hydraulic features and substrate type of the habitats. However, most of the existing research does not consider analyses of organisms' ecological traits and their community structure. To bridge this gap, we present the results of analyses of macroinvertebrate communities carried out for environmental flow purposes. The study was performed at two reaches of the Flinta River, a European, lowland, temperate and perennial river, with different degrees of hydromorphological alterations. We state that more detailed analyses of organisms' community in environmental flow assessment are needed. Thus, we assess the dissimilarity of the organism community structure sampled during field campaigns by means of statistical tests, and we analyse macroinvertebrate ecological traits and indicators commonly used to evaluate river status. Afterwards, we discuss the applicability of the analyses and provide recommendations for the future environmental flow assessments.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085266","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":"Relationships Between Aquatic Ecology, Landscapes, Hydrogeology and Hydrochemistry in Great Basin and Mojave Desert Spring Systems USA","authors":"Donald W. Sada,&nbsp;James M. Thomas","doi":"10.1002/eco.70035","DOIUrl":"https://doi.org/10.1002/eco.70035","url":null,"abstract":"<p>Springs are groundwater-dependent systems sustaining most of the riparian and aquatic habitat in western North America's deserts. The relationship between hydrogeology and springs is recognized by groundwater hydrologists and ecologists; however, studies integrating these disciplines have focused on site and species-specific relationships. We examined environmental and biotic characteristics of persistent, reference springs following a Modified Regional Hydrologic Framework in 53 Great Basin and Mojave Desert springs. Springs in this region are fed by groundwater flow from various aquifers and they vary widely in elevation, discharge, substrate composition, temperature and electrical conductance (EC). Structural and bioassessment metrics of benthic macroinvertebrate communities were strongly associated with aquifer type (provenance) landscape settings, and groundwater flow paths (and associated residence times). Characteristics of these communities generally varied along an environmental gradient with intolerant communities in mountain aquifer springs, where groundwater flow paths and residence times are short, water is cool and EC is low. Increasingly tolerant communities occupy local aquifer bajada, local aquifer valley floor, (alluvial valley and playa) and local aquifer geothermal springs; and regional aquifer springs; where groundwater flow paths and residence times are longer than mountain aquifer springs, water is warmer and EC is higher. Longer flow paths and residence times often create a variety of harsh hydrochemical conditions. Suites of crenobionts characterize regional aquifer springs, where groundwater flow paths are longest, and groundwater residence times are oldest. The importance of hydrochemistry to structuring BMI communities suggests that water chemistry provides the foundation for the basic requirements, and limitations, for taxa to exist in a spring system. From this basic set of parameters, communities are then influenced by dispersal, history and physical characteristics of spring habitats. The hydrochemical relationships among springs in this region indicate that hydrogeology and spring ecosystem ecology are closely linked in these western deserts, and that integrating ecological and hydrogeological models will enhance the efficacy of groundwater use, spring ecosystem and biodiversity management, monitoring and protection.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144074376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Internal Water Movement and Residence Time Differ in Two Tree Species in a Temperate Deciduous Forest: Evidence From an In Situ D2O Isotope Tracer Study","authors":"Kevan J. Minick,&nbsp;Jennifer Bahramian,&nbsp;David Love,&nbsp;Lauren Tucker,&nbsp;Keith Reinhardt,&nbsp;Daniel M. Johnson,&nbsp;Ryan E. Emanuel","doi":"10.1002/eco.70047","DOIUrl":"https://doi.org/10.1002/eco.70047","url":null,"abstract":"<div>\u0000 \u0000 <p>To facilitate better predictive capabilities of hydrological fluxes in forested ecosystems, quantifying internal tree water movement at the tree species level is necessary. We measured short-term (daily) and long-term (weekly–monthly) water transport using isotopic breakthrough curves measured in real-time in tree species with different hydraulic anatomies (ring porous vs. tracheid). One gymnosperm species (loblolly pine; <i>Pinus taeda</i> L.) and one angiosperm species (southern red oak; <i>Quercus falcata</i>) were selected, which are common species across the Southeastern United States. Deuterated water (D₂O) was injected into the base of four trees per species (eight trees total) and tracked radially (within xylem tissues) and axially (along tree trunks) for 45 days within tree trunks and leaf water. At three heights along the main trunk, boreholes were installed to isolate distinct xylem tissues: (1) shallow sapwood (SS W); (2) deep sapwood (DSW); and (3) heartwood (HW). Initially, both species showed tracer enrichment in SSW. Subsequent tracer movement showed that oaks retained more tracer in HW and for a longer period of time than pines. Arrival time of tracer peaks ranged from 1 to 13 days in oaks (maximum δ²H = −109 to +7291) and from 1 to 4 days in pines (maximum δ²H = +22 to +8831), while time to recovery to baseline δ²H concentrations generally ranged from 7 to 38 days in oaks and from 2 to 6 days in pines. Accordingly, tracer residence time tended to be longer for all tissue depths measured in the oak trunks (1–9 days) and leaves (9–18 days) compared with pines (trunk: 0.2–3 days; leaf: 5–8 days), while tracer travel velocity was higher in pines for the trunk in the SSW and HW (2.8–5.6 m day⁻¹) compared with oaks (0.3–2.5 m day⁻¹), but not when estimated at the leaf. Although sapwood and HW are hydraulically connected, the degree of connectivity varied between tree species. Results from this study open the door for more focused studies and a greater understanding of internal water movement within mature trees.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939571","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":"Predictability of Cottonwood Recruitment Along a Dynamic, Regulated River","authors":"Rachel E. Wright,&nbsp;Sierra J. Phillips,&nbsp;Romina Diaz-Gomez,&nbsp;Yufang Jin,&nbsp;Mary L. Cadenasso,&nbsp;Gregory B. Pasternack","doi":"10.1002/eco.70048","DOIUrl":"https://doi.org/10.1002/eco.70048","url":null,"abstract":"<div>\u0000 \u0000 <p>Riparian vegetation planting and management are vital to river engineering projects. To inform of these activities, science needs to provide practitioners with a better understanding of influences on recruitment and where vegetation will most likely establish and survive. This study investigated whether the spatially explicit recruitment of <i>Populus fremontii</i> (Fremont cottonwood), a dominant riparian species in the western United States, could be predicted along a dynamic, alluvial regulated river. We used a ~34-km segment of the Yuba River in California, United States, which was mapped in 2017 after a large flood reset the terrain. Five years later from August through November 2022, a field campaign characterised precise locations of juvenile cottonwoods. We evaluated predictions from deterministic and statistical models. For the deterministic test, a spatially distributed riparian seedling recruitment model was used with expert-estimated parameters. The model was not accurate in this case but was informative. For the statistical approach, a supervised classification random forest (RF) algorithm, driven by 2017 hydrophysical and topographic variables, was trained and cross-validated using 2022 cottonwood presence and absence observations. The RF model had an overall accuracy of 87% and an AUC-ROC value of 94%, with the most important variables being the detrended DEM, channel proximity and inundation survival. Topographic variables were much more significant than hydrophysical ones. Further developments to understand underlying governing equations and recruitment model parameters will draw on lessons from the RF model. Both deterministic and statistical models are recommended to evaluate riparian vegetation restoration designs, as each yields unique insights.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939346","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":"Fish Community Structure and Environmental Drivers in a Tropical River Wetland Continuum: A Study From Brahmaputra Basin in the Eastern Himalayan Region","authors":"Pritam Das,&nbsp;Asha T. Landge,&nbsp;B. B. Nayak,&nbsp;Karankumar Ramteke,&nbsp;B. K. Das,&nbsp;S. K. Majhi,&nbsp;A. K. Yadav,&nbsp;Rakesh Kumar,&nbsp;Prastuti Saikia,&nbsp;Sahina Akter,&nbsp;Simanku Borah","doi":"10.1002/eco.70041","DOIUrl":"https://doi.org/10.1002/eco.70041","url":null,"abstract":"<div>\u0000 \u0000 <p>The study investigates the fish community structure and environmental drivers of Deepor Beel, a floodplain wetland situated in the Brahmaputra Valley of Assam, India. Recognized as a Ramsar site of international importance, Deepor Beel is a biodiverse habitat that supports a variety of flora and fauna, including a rich ichthyofaunal diversity. This research recorded 55 fish species across 9 orders and 21 families, with Cypriniformes and Cyprinidae being the dominant order and family, respectively. Seasonal variations were evident, with the monsoon season exhibiting the highest species richness due to the beel's connectivity with the Brahmaputra River. Environmental factors such as water temperature, pH, dissolved oxygen, turbidity and ammonia levels were identified as critical determinants of fish abundance and community structure. The study applied biodiversity indices like Shannon–Wiener, Margalef and Simpson indices to quantify species richness and evenness, highlighting significant diversity fluctuations across seasons. The monsoon and postmonsoon period recorded higher diversity and species richness compared to the winter and premonsoon period. The research also highlights the growing threats to Deepor Beel, including eutrophication, habitat degradation, pollution and the introduction of non-native species. Despite these challenges, the beel remains an important ecological and economic resource, supporting fisheries and local livelihood. The findings underline the necessity for a sustainable management approach, including the implementation of conservation strategies to mitigate anthropogenic disturbances and preserve the ecological integrity of Deepor Beel. The study offers baseline data crucial for guiding future conservation efforts and emphasizes the need for formal management plans to ensure the long-term sustainability of this vital wetland ecosystem.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Morphological Plasticity of Dwarf Bamboo (Pleioblastus chino) Influences Stemflow Generation Under Different Canopy Conditions","authors":"Yutaka Abe,&nbsp;Takashi Gomi,&nbsp;Norihisa Nakamura,&nbsp;Chen-Wei Chiu","doi":"10.1002/eco.70042","DOIUrl":"https://doi.org/10.1002/eco.70042","url":null,"abstract":"<div>\u0000 \u0000 <p>We investigated the morphological traits and stemflow production of the understory dwarf bamboo <i>Pleioblastus chino</i> under different canopy conditions in a temperate deciduous forest. The mean stem density was 1.9 times higher in the open (Op) plot, in which the canopy had been removed, than in the forested (Uc) plot. Due to the high availability of solar radiation in the Op plot, leaves were concentrated in the upper sections of stems, and the leaf area index was 2–3 times greater than that in the Uc plot. Despite differences in leaf morphological traits, stemflow corresponded to precipitation inputs in both plots. However, the stemflow rate responded more rapidly to precipitation in the Op plot than the Uc plot; this was related to differences in the amount and timing of initial canopy storage and interception loss. The mean stemflow volume was 1.8–2.4 times greater in the Op plot than the Uc plot due to differences in interception loss. The morphological adaptations under the high-irradiance conditions of the Op plot altered the leaf height and distribution, enabling individual stems with a greater number of leaves attached at higher positions on the stem to collect rainwater more efficiently and generate greater stemflow. Classification based on stem height and leaf number ratio also highlights adaptive morphologies in response to light conditions, which enhance rainwater collection and stemflow efficiency in the Op plot. Thus, alterations in the morphological traits of <i>P. chino</i> enhanced not only the radiation use efficiency but also the water use efficiency via water transfer to the rhizome. These results suggest that morphological plasticity associated with forest canopy conditions enhances the ecological adaptivity of dwarf bamboo through radiation and water use.</p>\u0000 </div>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 3","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919427","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}