Ecohydrology & Hydrobiology最新文献

{"title":"River modifications and brown trout: It’s not all bad news","authors":"Luděk Šlapanský ,&nbsp;Michal Janáč ,&nbsp;Pavel Jurajda ,&nbsp;Kevin Roche ,&nbsp;Michal Hnilička","doi":"10.1016/j.ecohyd.2025.100701","DOIUrl":"10.1016/j.ecohyd.2025.100701","url":null,"abstract":"<div><div>Channelisation and other river modifications are widely believed to have a negative impact on aquatic biota. In recent years, significant resources have been invested into river restoration projects; however, their success often remains uncertain. The brown trout (<em>Salmo trutta</em>), with its specific environmental requirements, is considered particularly vulnerable to river modification and, as such, is often seen as a flagship species for many river restoration efforts. The 59 km Vsetínská Bečva, a small sub-montane river in eastern Czech Republic, supports a thriving trout population, despite being heavily modified. This provided an opportunity to study the effects of different river modification types on different cohorts of the trout population. While modified river stretches with deepened channels and boulder-stabilised or undercut banks appeared to support age 3+ trout, this cohort was almost absent from stretches modified by river widening. In general, while the occurrence of age-1 trout increased with the proportion of areas with depths below 40 cm, age-3+ trout increased with the proportion of areas with depths ≥ 40 cm, especially when accompanied by undercut banks. From the viewpoint of trout population management, our results suggest a re-evaluation of the negative impacts of river modifications may be needed, with studies considering the potential for positive contributions alongside their known negative ecological effects.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100701"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739220","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":"Structural and functional responses of Panicum antidotale to diverse ecohydrological conditions","authors":"Muhammad Irshad ,&nbsp;Mansoor Hameed ,&nbsp;Farooq Ahmad ,&nbsp;Ummar Iqbal ,&nbsp;Jazab Shafqat ,&nbsp;Ansa Asghar","doi":"10.1016/j.ecohyd.2025.100686","DOIUrl":"10.1016/j.ecohyd.2025.100686","url":null,"abstract":"<div><div>Understanding plant–water relationships is vital for managing ecosystems under escalating hydrological stress. <em>Panicum antidotale</em> (a C₄ perennial grass) exhibits significant phenotypic plasticity, making it a suitable model for assessing structural and functional adaptation across ecohydrological gradients. This study evaluated eight natural populations from freshwater ponds, irrigation canals, riverbanks, and sewerage channels in Punjab, Pakistan. Results revealed that irrigation canal populations (CW, KP) exhibited maximum plant height, leaf number, and leaf area, reflecting a growth-acquisitive strategy supported by high chlorophyll <em>b</em> and carotenoid content. Freshwater pond populations (BS, BC) also followed an acquisitive model, with elevated chlorophyll a, large bulliform cells, and moderate growth, prioritizing photosynthetic efficiency under stable conditions. In contrast, sewerage populations (SA, TSP) adopted a conservative strategy, with stunted shoot growth but enhanced root elongation, thickened sclerenchyma and epidermis, and increased levels of osmolytes (proline, glycine betaine), antioxidants (ascorbic acid, CAT, POD), and oxidative stress markers (H₂O₂, MDA)—indicating investment in defense and stress tolerance over productivity. Riverbank populations (RA, RR) displayed an intermediate strategy, with the highest shoot biomass, midrib and lamina thickness, phloem area, and stomatal density—traits that aid in gas exchange, hydraulic conductivity, and structural support in dynamic flood-prone environments. Anatomically, these populations also showed well-developed vascular systems and thickened leaf structures, contributing to both ecological persistence and hydrological functionality. These specific adaptations support resource allocation theory and position <em>P. antidotale</em> as a candidate for ecological restoration, erosion control, and water quality improvement.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100686"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739214","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":"Temperature-driven nonlinear thresholds and time-lags in vegetation response to extreme climate events via machine learning: Evidence from China's Poyang Lake","authors":"Fangfei Zhang ,&nbsp;Wei Yang ,&nbsp;Dongdong Shao","doi":"10.1016/j.ecohyd.2025.100685","DOIUrl":"10.1016/j.ecohyd.2025.100685","url":null,"abstract":"<div><div>Understanding how extreme climate events impact vegetation dynamics is crucial for ecosystem resilience assessment and adaptive management, but existing research has yet to fully explore the intricate mechanisms governing vegetation responses to climate extremes. Using Poyang Lake as a case study, we assess spatiotemporal variations in NDVI over periods from 2000 to 2020, and examine effects of 23 extreme climate indices (including rainfall and temperature metrics) on vegetation dynamics, considering lagged and cumulative effects. Nine temporal effect scenarios were evaluated to clarify the complex relationships between extreme climate events and vegetation responses. Our results indicate that the NDVI in the Poyang Lake region increases significantly, with a mean growth rate of 0.037 per decade (<em>p</em> &lt; 0.01). Extreme temperature indices exhibited the strongest correlations with vegetation response, with peak correlation observed at one-month accumulation periods, while for most extreme precipitation indices, vegetation responses were stronger with accumulated effects over 2–3 months than with simple lag effects. Temperature-related indices were clearly dominant in the explainable models, with monthly minimum value of daily minimum temperature (TNn) being the most influential factor, accounting for approximately 23 % of the explained variance. SHapley Additive exPlanations (SHAP) value analysis revealed a pronounced non-linear threshold effect: NDVI increased sharply as TNn rose from 0 °C to 12 °C, then stabilized at higher values, which indicates that cold stress represents a major constraint on vegetation growth with a clear physiological threshold. These findings underscore critical need for a more comprehensive and explicit depiction of how climate extremes influence vegetation.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100685"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739213","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":"Biological removal of bisphenol A using cross-linked aggregates of versatile peroxidase (CLEAs-VP/Ba) produced by Bjerkandera adusta CCBAS 930","authors":"Kamila Rybczyńska-Tkaczyk","doi":"10.1016/j.ecohyd.2025.100669","DOIUrl":"10.1016/j.ecohyd.2025.100669","url":null,"abstract":"<div><div><span>The aim of this study was to evaluate the feasibility of using cross-linked aggregates of versatile peroxidase (CLEAs-VP/Ba) derived from </span><span><span>Bjerkandera adusta</span></span><span><span><span> strain CCBAS 930 for bisphenol A (BPA) </span>biotransformation. To optimize VP/Ba </span>biosynthesis<span> in stationary liquid cultures (28 °C), BPA (40 mg/mL) was added, and oxidation efficiency of 10 mM 2,6-dimethoxyphenol (2,6-DMP) was measured at various intervals (days 3, 7, 10, 14, 18, 20, and 26). The tests were conducted in 0.1 M acetate buffer at pH 3.0 and 5.0, with and without Mn</span></span>²⁺<span><span>. Maximum activity for VP/Ba was determined on day 14, after which the culture fluid was separated from the mycelium and </span>ammonium sulfate<span> (80 %) and 72 mM glutaraldehyde was added to prepare CLEAs-VP/Ba (22 h, 150 rpm, 30 °C). The activity recovery (AR</span></span>_CLEAs-VP/Ba) and aggregation yield (AY_CLEAs-VP/Ba) were 11.65 % and 48.95 %, respectively. The BPA (10 mg/L) removal efficiency of CLEAs-VP/Ba and 10 mM H₂O₂<span><span><span> was measured spectrophotometrically after 30, 60, 90 and 120 min. Results showed that CLEAs significantly increased the activity of VP/Ba </span>peroxidase, achieving an 83 % BPA removal efficiency after 120 min (4.15 mg/h). Moreover, CLEAs-VP/Ba-treated samples exhibited reduced biotoxicity, with no observed </span>phytotoxicity<span>. The treatment also mitigated long-term adverse effects, such as genotoxicity. In case of estrogenic activity, no significant decrease was observed after the use of CLEAs-VP/Ba.</span></span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100669"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739016","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":"Storm water management model simulations of the non-point source pollution load in the northern Anhui plain","authors":"Yun Wan ,&nbsp;Mingjun Li ,&nbsp;Nan Zhang ,&nbsp;Mengwan Lin ,&nbsp;Yuxuan Li ,&nbsp;Peiqing Huang ,&nbsp;Yuqi Feng ,&nbsp;Bai Sun ,&nbsp;Wei Wei ,&nbsp;Shuguang Zhu","doi":"10.1016/j.ecohyd.2025.100663","DOIUrl":"10.1016/j.ecohyd.2025.100663","url":null,"abstract":"<div><div><span>Recently, the use of computer models to quantitatively simulate non-point source pollution has become a common and effective tool. Strengthening the research and application of non-point source pollution models is crucial for its prediction and control. Therefore, a storm water management model (SWMM) was created to simulate surface production convergence, pipe network transmissions, pollutant accumulation, and the effect of low-impact development (LID) measures. The results indicate that the total non-point source pollution load in the study area was positively related to </span>rainfall intensity. Under different return periods, the trend of the concentration of each pollutant entering the river with time is the same. The emission of pollutants is mainly concentrated in the first 20–80 min and reaches the peak at about 60 min. Commercial and residential areas emitted far more pollutants than green spaces, the trend of the concentration of each pollutant entering the river with the change of rainfall time is the same in the three types of land use, which reaches the peak at about 55 min. Taking the S30 sub-catchment area in the study area as an example, the non-point source pollution storage tank, single LID and combined LID measures were added to the sub-catchment area, and the reduction of COD, TN, TP and SS in the sub-catchment area was compared under the condition of 0.5-year rainfall. The results show that the reduction rate of the four pollutants in the sub-catchment area by the single non-point source pollution storage tank is within 22 %; the reduction rate of four pollutants in the sub-catchment area by LID measures alone is between 24 % and 27 %, and bioretention &gt; permeable pavement &gt; green roof; the combined LID measures have a reduction rate of &gt;30 % for the four pollutants in the sub-catchment area. In summary, the control effects of the three schemes are combined LID measures &gt; single LID measures &gt; non-point source pollution storage tanks.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100663"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738953","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":"Macroinvertebrate functional responses to human disturbance and flow cessation in Afromontane-savannah rivers","authors":"Christine A.A. Owade ,&nbsp;Horst Kaiser ,&nbsp;Gelas M. Simiyu ,&nbsp;Godfrey Owuor ,&nbsp;Evans Sicharani ,&nbsp;Gretchen M. Gettel ,&nbsp;Frank O. Masese","doi":"10.1016/j.ecohyd.2025.100649","DOIUrl":"10.1016/j.ecohyd.2025.100649","url":null,"abstract":"<div><div>Wildlife, people, and livestock rely on riverine ecosystems in arid and semi-arid areas as primary water sources. Studies on the influence of human activities and livestock on the ecological health of these seasonal systems are thus necessary. This is more relevant given the increasing demand for water as human populations grow, which leads to over-abstractions and, sometimes, cessation of flows in streams and rivers during the dry periods. Although the structural composition of macroinvertebrate communities has been utilized to indicate the ecological integrity of streams and rivers, macroinvertebrate functional feeding groups (FFGs) are less studied, especially in intermittent Afrotropical streams. We used macroinvertebrate FFGs as indicators of water quality and ecological integrity of streams influenced by different levels of human disturbance and flow variability in the Afromontane-savanna Bura and Wundanyi rivers in Taita Taveta County, Kenya. A total of 18 sampling sites were identified for sampling and grouped into three (3) disturbance categories (low– <em>n</em> = 7, moderate - <em>n</em> = 4, and disturbed - <em>n</em> = 7) and two categories of flow permanence (permanent – <em>n</em> = 9, and seasonal – <em>n</em> = 9). At each site, sampling of physicochemical water quality parameters and macroinvertebrates was done twice during the wet and dry seasons. Ratios of five FFGs (collector-gatherers, collector-filterers, scrapers/grazers, predators, and shredders) were used to derive five metrics that are surrogates of ecosystem attributes in the rivers. There was a significant difference (<em>p</em> &lt; 0.05) in the concentrations of dissolved organic carbon, total phosphorus, pH, and electrical conductivity between the three site categories. Seasonal sites recorded higher electrical conductivity and total dissolved solids compared to permanent streams. Total suspended solids and particulate organic matter were higher during the dry season. FFGs responded to the disturbance gradient, seasonality, and flow variability in the study area with high numbers of predators and scrapers during dry season, suggesting that the human disturbance influenced the functional composition of macroinvertebrates in the rivers. The findings also show that flow variability (seasonal vs flow permanence) played a important role in structuring communities and determining ecosystem functioning. Therefore, in addition to general human disturbance, there is also a need to study the impact of excessive water withdrawals or changes in natural flow regimes of streams and rivers on aquatic communities and the development of indices to assess their effects.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100649"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738922","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":"Comparison of potential future impacts of climate change on Streamflows in tropical and subtropical watersheds","authors":"Imiya Mudiyanselage Chathuranika ,&nbsp;Dalya Ismael","doi":"10.1016/j.ecohyd.2025.100699","DOIUrl":"10.1016/j.ecohyd.2025.100699","url":null,"abstract":"<div><div>Understanding climate change impacts on watersheds is critical for sustainable water management, ecosystem protection, and resilience planning. This study compares projected streamflow changes in two watersheds: the tropical Upper Nilwala Watershed (UNW), Sri Lanka, and the subtropical Upper James Watershed (UJW), Virginia, USA. Streamflows for both watersheds are simulated using the Hydrologic Engineering Center's Hydrologic Modeling System (HEC-HMS) hydrological model, with future climate projections bias-corrected using the Linear Scaling Method (LSM). The analysis spans three future periods; Near (NF: 2026–2050), Mid (MF: 2051–2075), and Far Future (FF: 2076–2100) against a 1998–2022 baseline period, using ensembles of selected GCM-RCM combinations under medium (Shared Socioeconomic Pathway SSP 2-4.5 (Representative Concentration Pathway RCP 4.5)) and high (SSP 5-8.5 (RCP 8.5)) Emission Scenarios (ESs). Projections show diverging trends: UJW may face annual precipitation declines of 8.19% (SSP 2-4.5 (RCP 4.5)) and 14.63% (SSP 5-8.5 (RCP 8.5)), while UNW could see increases of approximately 10.80%, during 2026-2100 respectively. By 2100, UNW at Pitabeddara may experience up to a 56.53% rise in annual discharge (SSP 2-4.5 (RCP 4.5)), whereas UJW at Holcomb-Rock may see only a 4.16% increase (SSP 2-4.5) or a slight 0.62% decrease (SSP 5-8.5 (RCP 8.5)). Monthly and seasonal flows differ sharply: UNW may rise by 136.7% during the northeast monsoon season, while UJW trends vary gains in summer/autumn, but spring/winter declines up to 12.48%. These contrasts highlight the need for region-specific adaptive strategies, emissions mitigation, and addressing model uncertainties for effective long-term water management.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100699"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739117","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":"Constructed wetlands as post-treatment in Isfahan, Iran: Evaluation with different sizes of natural pumice","authors":"Tayebeh Omidinia-Anarkoli,&nbsp;Mohammad Shayannejad","doi":"10.1016/j.ecohyd.2025.100651","DOIUrl":"10.1016/j.ecohyd.2025.100651","url":null,"abstract":"<div><div><span>Wastewater reuse is a promising solution to the water crisis in Iran, requiring cost-effective and eco-friendly treatment methods. This study evaluated the performance of pilot-scale constructed wetlands (CWs) treating effluent from the Fooladshahr wastewater treatment plant in Isfahan, Iran. Two CW configurations were tested: (1) horizontal subsurface flow CWs (H</span><img>CWs) and (2) hybrid CWs combining horizontal and vertical flow (HV-CWs). Four experimental units were constructed for each configuration (total: 8 CWs). Two pumice particle sizes (P1: 15–30 mm and P2: 3–9 mm) were used as substrates, and the effect of plants (<em>Phragmites australis</em>) was assessed. The mean theoretical hydraulic retention times (HRTs) were 3 days for H<img>CWs and 1.1 days for HV-CWs. CWs with smaller filler sizes generally performed better, reducing total suspended solids (TSS), biochemical oxygen demand (BOD₅), and chemical oxygen demand (COD) by up to 87.72 ± 7.96 %, 70.02 ± 24.72 %, and 69.40 ± 12.70 %, respectively. This improvement is due to enhanced physical and biological treatment. The presence of plants improved BOD₅ and COD removal in CWs with larger filler sizes, increasing efficiency by 20 % in H<img>CWs. Seasonal variations in phosphate (PO₄³) removal were observed, with better removal in warmer periods (44.45 ± 15.57 %), particularly in unplanted CWs with smaller fillers. All CWs achieved over 85 % fecal coliform (FC) removal, with planted CWs using smaller pumice sizes showing the lowest FC concentrations. While smaller filler size HV-CWs showed superior performance, larger planted H<img>CWs provided a cost-effective alternative. Further research is needed to assess long-term performance in various contexts.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100651"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739358","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":"Spatio-temporal patterns of habitat suitability for two exotic fishes under climate change in a tropical river basin","authors":"Arvind Kumar Dwivedi ,&nbsp;Kritish De","doi":"10.1016/j.ecohyd.2025.100704","DOIUrl":"10.1016/j.ecohyd.2025.100704","url":null,"abstract":"<div><div>Climate change and exotic species cumulatively poses a significant threat to global biodiversity, particularly in tropical regions, leading to substantial ecosystem alterations. Exotic fishes impact over half of the world's river basins, but studies on their climatic suitability are limited, especially in India. In this study we used the Random Forest species distribution model to examine the current and future climatically suitable areas for two exotic fish species, Common Carp (<em>Cyprinus carpio</em>) and Mozambique Tilapia (<em>Oreochromis mossambicus</em>) in the Bhima River basin of the Deccan Plateau, India. Our findings indicate an expansion of moderately suitable habitats over time, providing new colonization areas for these fishes. The majority of suitable climatic zones are in the arid and semi-arid regions of the lower Bhima River basin. Minimal overlap in climatic niches suggests limited interspecific competition, potentially allowing wider spread without direct competition. Increased climatic niche overlap may facilitate coexistence through efficient resource partitioning. Understanding effect of climate change on these exotic fish species' distribution is essential to mitigate their impact on aquatic ecosystems. Further research is recommended to assess the population and evaluate climatic and trophic niche dynamics of these exotic species for their better management practices in large river basins.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100704"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738832","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":"The role of crustacean zooplankton in water quality monitoring: Findings from two Portuguese reservoirs","authors":"Ivo Pinto ,&nbsp;Luísa Azevedo ,&nbsp;Sara C. Antunes","doi":"10.1016/j.ecohyd.2025.100646","DOIUrl":"10.1016/j.ecohyd.2025.100646","url":null,"abstract":"<div><div>Zooplankton is a key biological element in the aquatic food web. Although currently the European Water Framework Directive (WFD) does not include zooplankton in the biological assessments, the investigation of its potential contribution to water quality is crucial for an integrated evaluation of aquatic ecosystems. For one year, zooplankton communities from Portuguese reservoirs Rabagão and Aguieira, were sampled seasonally and characterized with several metrics and indexes (proportion of Calanoid/Cyclopoid ratios, feeding strategies and Zooplankton Reservoir Trophic Index - ZRTI). This strategy aimed to evaluate the ability of these endpoints to detect differences among trophic status and ecological potential in heavily modified water bodies. The two target reservoirs presented different classifications according to the WFD. Rabagão has good ecological potential, with higher Calanoid/Cyclopoid ratios and a greater proportion of large Cladocera to total Cladocera. On the other hand, Aguieira showed a poor ecological potential, mainly due to high phosphate concentrations, as well as low quality of phytoplankton (e.g., cyanobacteria concentration). In this reservoir, a greater abundance and diversity of zooplankton, was observed, which include highly efficient filter feeders organisms. Additionally, the ZRTI proved to be a sensitive discriminating element regarding the zooplankton community, which vary according to the quality of the two studied reservoirs. Our data, although limited to two reservoirs, indicate that ZRTI can complement the information given by the phytoplankton community in the water reservoir evaluation and, can be included in monitoring programs providing an effective indicator of bottom-up and top-down water quality.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100646"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738787","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}