Environmental Monitoring and Assessment最新文献

{"title":"Bayesian-optimized recursive machine learning for predicting human-induced changes in suspended sediment transport","authors":"Soumya Kundu,&nbsp;Somil Swarnkar,&nbsp;Akshay Agarwal","doi":"10.1007/s10661-025-14039-w","DOIUrl":"10.1007/s10661-025-14039-w","url":null,"abstract":"<div><p>The suspended sediment load (<i>SSL</i>) of a river is a key indicator of water resource management, river morphology, and ecosystem health. This study analyzes historical changes in <i>SSL</i> and evaluates machine learning (ML) models for <i>SSL</i> prediction in the Godavari River Basin. The dataset was divided into pre-1990 (1969–1990) and post-1990 (1990–2020) periods, revealing a significant decline in mean annual <i>SSL</i> from 136.85 to 62.38 million tons post-1990 due to anthropogenic influences such as dam construction and land-use/land-cover (LULC) changes. Despite a consistent seasonal distribution (~ 73% <i>SSL</i> contribution from monsoon months in both periods), there was a notable decline in median and peak <i>SSL</i> values, along with a narrowing interquartile range, indicating reduced sediment availability. The empirical cumulative distribution function (ECDF) further revealed shifts in sediment transport, with post-1990 <i>SSL</i> values surpassing pre-1990 levels at higher cumulative probabilities, suggesting altered sediment retention and release patterns. To improve <i>SSL</i> prediction, tree-based ML models were developed and evaluated using <i>R</i>², <i>RMSE</i>, and <i>MAE</i> metrics. Among them, the extra trees regressor (ETR) demonstrated the highest predictive accuracy (<i>R</i>² = 0.97 in training, 0.9 in testing) with the lowest errors, while the random forest regressor (RFR) and gradient boosting regressor (GBR) provided competitive results. The findings highlight the impact of human modifications on sediment transport and emphasize that ensemble tree-based models offer a robust solution for <i>SSL</i> prediction. This study provides valuable insights for river basin management and sustainable sediment transport modeling under changing hydrological conditions.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877717","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":"Synergistic contextual information and individual sample as mean training approach: paddy stubble burning mapping","authors":"Anamika Palavesam Sarathamani,&nbsp;Anil Kumar","doi":"10.1007/s10661-025-14052-z","DOIUrl":"10.1007/s10661-025-14052-z","url":null,"abstract":"<div><p>Paddy stubble burning is a prevalent agricultural practice in India, particularly after paddy cultivation, making the country the second-largest contributor to crop residue burning (CBR) globally, releasing approximately 84 Tg/year of aerosols and pollutants, significantly exacerbating air quality and public health crises. This study aimed to enhance the identification of paddy stubble-burning activity at the field level by integrating the contextual possibilistic <i>c</i>-means (PCM-S) model and individual sample as mean (ISM) training approach. By analysing spectral and temporal data from PlanetScope and Sentinel-2, the study optimized the classification of burnt paddy fields. The contextual PCM-S model, which incorporates neighbouring pixel effects, was combined with the ISM training approach, which preserves individual sample characteristics during the training process. This integration, along with pre-burnt and post-burnt temporal data, effectively addressed noisy pixels and field heterogeneity caused by varying harvesting techniques. Moreover, it helped prevent the recurrence of burnt fields in subsequent observations and facilitated the identification of fields that were burned and immediately ploughed. The key findings demonstrated that among 155.42 sq. km of paddy fields in the vicinity of Patiala, 27.07 sq. km were burnt across ten mapped dates, constituting 83.99% of the total burning events mapped across 13 dates of harvested paddy fields. The results showed good accuracies and validation, with minimal intra-class mean membership difference (MMD), indicating negligible variability within the same class (almost 0), higher inter-class MMD, representing a clear distinction between classes (nearly 1), negligible variance (approximately 0.0001), minimal entropy (about 0.05), and a statistical <i>F</i>-score exceeding 0.9. These findings underscore the significant occurrence of paddy stubble burning, despite efforts to manage paddy crop residue, underscoring the urgent need for immediate measures to mitigate future occurrences.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875388","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":"Mobile air monitoring to identify volatile organic compound distributions and potential hazard during the remediation of the East Palestine, Ohio train derailment","authors":"Mariana Saitas,&nbsp;Toriq Mustapha,&nbsp;Eva Vitucci,&nbsp;Oladayo Oladeji,&nbsp;Han-Hsuan D. Tsai,&nbsp;Carolyn Cannon,&nbsp;Ivan Rusyn,&nbsp;Albert A. Presto,&nbsp;Weihsueh A. Chiu,&nbsp;Natalie M. Johnson","doi":"10.1007/s10661-025-14038-x","DOIUrl":"10.1007/s10661-025-14038-x","url":null,"abstract":"<div><p>On February 3, 2023, a train carrying hazardous chemicals derailed in East Palestine, Ohio. Initial mobile air monitoring in mid-February 2023 revealed unique spatiotemporal patterns for a range of volatile organic compounds (VOCs). To determine long-term impacts on air quality, two follow up mobile air monitoring campaigns were carried out in March and April 2023 on public roadways using a proton transfer reaction time-of-flight mass spectrometer. This study aimed to characterize VOC distributions, identify hotspots, and characterize potential hazards. Concentrations of targeted VOCs benzene, toluene, and xylenes were lower overall in East Palestine in April compared to March. Overall, more compounds (<i>n</i> = 48) were identified using non-targeted analysis (NTA) in East Palestine in March compared with April (<i>n</i> = 30). Several of these VOCs were uniquely identified during March sampling, and among the commonly detected compounds, higher average concentrations were observed in East Palestine compared background levels. Spatial analysis revealed similar patterns of hotspots for benzene and additional VOCs identified from NTA, including C₃H₄O, C₄H₈O, and C₆H₁₂O. Using the EPA Hazard Comparison Dashboard, 49% and 40% of the identified VOCs were classified as “very high” or “high” hazards for eye and skin irritation, respectively. Notably, eye and skin irritation were among the common symptoms reported by the residents near the disaster site. Additionally, 29%, 18%, and 14% of the identified VOCs were classified as “very high” or “high” hazards for genotoxicity/mutagenicity, acute inhalation toxicity, and acute dermal toxicity, respectively. Collectively, these findings provide exposure data supportive of the reported health concerns and demonstrate the application of mobile monitoring coupled with NTA as a novel approach for rapid identification and mapping of potentially hazardous chemicals following an environmental disaster.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10661-025-14038-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875390","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":"Sampling eDNA at outflows from artificial drainage systems: what is the potential to monitor landscape degradation?","authors":"Ovidiu Copoț,&nbsp;Kadri Runnel,&nbsp;Marko Kohv,&nbsp;Niloufar Hagh-Doust,&nbsp;Asko Lõhmus","doi":"10.1007/s10661-025-14047-w","DOIUrl":"10.1007/s10661-025-14047-w","url":null,"abstract":"<div><p>Wetlands have been drained extensively for productive land use, transforming the biodiversity of whole landscapes. Such transformation primarily affects the huge biodiversity across the terrestrial and aquatic environments that is difficult to observe directly, especially in the case of microorganisms. We explored whether environmental DNA (eDNA) from the flowing water could serve as a data source for characterizing the level of biological degradation of drained and managed forest-wetland landscapes. We took spatially and seasonally replicated samples from nine hydrologically monitored outflows at small drained catchments in Estonia in order to understand the variation in their eDNA-based diversity. Using PacBio long-read sequencing, we detected a large taxonomic diversity of eukaryotes (approx. 6000 operational taxonomic units (OTUs)), which was spatially and seasonally structured, but also highly variable within individual ditches. Even in fungi (the best-represented taxon group), the OTU accumulation curves did not level off despite high volumes of filtered water; however, many interesting species records were obtained (particularly on pathogenic microorganisms). We conclude that eDNA can provide valuable insights into the biodiversity of hydrologically drained areas, but our results indicate high heterogeneity among samples (apparently due to both actual assemblage differences and sampling errors) as a major problem for standard environmental assessment. Combining eDNA methods with other ecological assessment techniques is a priority for further research in these systems.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875385","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":"Bioaccessibility assessment of Mn, Cu, Fe, and Cd in Henan Province wheat using physiologically based extraction","authors":"Li Ma,&nbsp;Xuejin Zhao,&nbsp;Guobing Lin,&nbsp;Honghao Shi,&nbsp;Ziqi Li,&nbsp;Lianfeng Shen","doi":"10.1007/s10661-025-14049-8","DOIUrl":"10.1007/s10661-025-14049-8","url":null,"abstract":"<div><p>As an important crop in China, wheat serves as a crucial source of micronutrients and a potential vector for toxic elements in human diets. This study systematically collected wheat grains from 54 counties in Henan Province and conducted in vitro physiological extraction experiments to assess the bioavailability of Mn, Cu, Fe, and Cd in wheat samples. Results turned out that the bioavailability of Cd significantly decreased from the gastric to the intestinal stage. The bioavailability of Mn exhibited similar trends to Cd in the two phases, whereas Cu and Fe showed a higher bioaccessibility in the intestinal phase compared to the gastric phase. Correlation analysis revealed that higher total metal concentrations always resulted in a higher bioaccessible fraction, and the bioaccessibility of Cd was positively correlated with Mn and its bioaccessibility. Eventually, health risk to Cd from wheat consumption evaluated by Monte Carlo simulation indicated that children exhibited a heightened vulnerability to health risks in comparison to adults and risks could be decreased significantly by introducing bioaccessibility. Consequently, it is evident that refining the relationship between bioaccessibility and biotoxicity of elements could provide the methodology to accurately and efficiently assess human health risks.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875387","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":"Microzooplankton community dynamics under ocean acidification: key observations and insights","authors":"Sai Elangovan S.,&nbsp;B. S. K. Kumar,&nbsp;Dokala Bhaskara Rao,&nbsp;G. V. M. Gupta","doi":"10.1007/s10661-025-14017-2","DOIUrl":"10.1007/s10661-025-14017-2","url":null,"abstract":"<div><p>Microzooplankton (MZP) community dynamics under ocean acidification were studied through pH manipulated microcosm experiments conducted in the coastal waters of the Bay of Bengal (off Vishakhapatnam) during the months of July and October 2022 (Experiment 1 and Experiment 2). The total abundance of phytoplankton and microzooplankton (MZP) communities was varied from 3.66 × 10⁴ to 5.27 × 10⁵ Cells. L⁻¹ and 0.06 × 10³ to 1.53 × 10³ Cells. L⁻¹, respectively, and a significant difference in phytoplankton and MZP abundance was found between the initial and final day of the entire experimental samples (control and acidified). The initial seawater samples were dominated with centric diatom species <i>Dactyliosolen fragilissimus</i> (Experiment 1 and Experiment 2: 72–82%) and shifted to pennate diatoms such as <i>Pseudo-nitzschia</i> sp. (Experiment 1: 60–68%) and <i>Amphora</i> sp. (Experiment 2: 80–94%) at the end of the experiments (all acidified and control samples). The initial MZP community composition consisted of four different groups LC: loricate ciliates, ALC: aloricate ciliates (heterotrophy and mixotrophy), HDS: heterotrophic dinoflagellates and copepod nauplii, and at the end of the experiments, it was shifted entirely to the dominance of aloricate ciliates (16–73%) and heterotrophic dinoflagellates (67–100%) in all the samples (control and acidified) in Experiments 1 and 2, respectively. Statistical analysis (Spearman’s rank correlation) results showed a relative and significant inverse relation of MZP with phytoplankton biomass and abundance and heterotrophic bacterial counts in all the samples (control and acidified). Besides, the LC showed a weak correlation with Chl-<i>a</i>, and the HDS showed a significant correlation with LC, phytoplankton biomass and abundance, and bacterial counts (picocyanobacteria and heterotrophic bacteria). These results indicate that the MZP may graze on both picocyanobacteria and heterotrophic bacteria, and also, HDS may graze on their relative community like LC. Canonical correlation analysis (CCA) revealed that prey abundance such as phytoplankton biomass (Chl-<i>a</i>), picocyanobacteria, and heterotrophic bacterial communities are most influencing variables on the MZP assemblages than other environmental variables such as pH, temperature, and salinity. Thus, these findings show that the MZP community dynamics under ocean acidification may vary with different species and groups due to their food availability (indirect effect) and individual competence (direct effect) to different environmental conditions, such as pH variations.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875389","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":"Detection and taxonomic identification of emerging pathogenic yeasts in surface waters from Lagoon Systems in Rio de Janeiro, Brazil","authors":"Danielly Corrêa-Moreira,&nbsp;Gisela Lara da Costa,&nbsp;Tatiane Nobre Pinto,&nbsp;Julia Araujo Alves,&nbsp;Laura Brandão Martins,&nbsp;Viviane Zahner,&nbsp;Thiago Pavoni Gomes Chagas,&nbsp;Milena Conceição Amorim,&nbsp;André Luís de Sá Salomão,&nbsp;Enrico Mendes Saggioro,&nbsp;Manoel Marques Evangelista Oliveira","doi":"10.1007/s10661-025-14022-5","DOIUrl":"10.1007/s10661-025-14022-5","url":null,"abstract":"<div><p>This study aimed to detect and identify emerging pathogenic yeasts in surface waters from two Lagoon Systems in Rio de Janeiro, Brazil, by polyphasic taxonomy. The monitoring of potentially pathogenic fungi in aquatic environments, especially in regions impacted by human actions, is highlighted in this study as one of the axes of the One Health approach. Water samples were collected, and after isolation, fungi were identified by polyphasic taxonomy, including MALDI-TOF–MS, which is also used for bacteria identification. Our results describe the physicochemical parameters of the surface water of these lagoons and reveal a significant diversity of yeast species, some of which are known to exhibit pathogenic potential and resistance to common antifungal treatments, as well as bacteria with resistance profiles to several currently used antibiotics. We conclude that Jacarepaguá Lagoon is the most impacted compared to Piratininga Lagoon; however, we highlight the urgent need for targeted interventions to mitigate pollution in both Lagoons, reinforcing the value of long-term surveillance in both ecosystems. We believe that monitoring emerging species is as critical as analyzing traditional water quality parameters. Early detection of resistant or invasive pathogens in aquatic ecosystems can prevent disease outbreaks, protect biodiversity, and mitigate public health risks, preventing loss of life, and optimizing public healthcare system expenditures.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10661-025-14022-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875391","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":"Structure and Dynamics of Pelagic Microalgae in Response to Anthropogenic Pressures: The Banco River Case","authors":"Adjoua Marthe NGuessan,&nbsp;Netto Mireille Seu-Anoï,&nbsp;Youssouf Diabagate","doi":"10.1007/s10661-025-14035-0","DOIUrl":"10.1007/s10661-025-14035-0","url":null,"abstract":"<div><p>This study was conducted to understand the structure and dynamics of microalgae in order to assess the ecological health of the Banco River. This river, located in the south of Côte d'Ivoire, is subject to considerable influence due to anthropogenic activities. To achieve this objective, microalgae as well as environmental parameters were sampled. Microalgae sampling took place at four points from July 2020 to June 2021, covering four climatic seasons, using a 20 µm mesh plankton net. Water samples of 250 ml at each station were taken for the extraction of chlorophyll pigments. However, high chlorophyll contents were obtained at station B1 (53 µg/l). In total, 158 microalgae taxa belonging to 53 genera, 32 families, 22 orders, 09 classes and 6 phyla were listed. The Euglenophytes (36.70%) represent the largest phylum with 58 taxa, followed by Chlorophytes (28.48%) with 45 taxa. The population of station B2 is more diverse, with 147 taxa, compared to the other stations. The evolution of the density shows that station B1 constitutes the environment with the highest density (4.77 × 10^6 cell/l). The organic pollution index (3.25–3.75) showed that the stations of the Banco River are moderately polluted.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875460","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":"Bridging the sanitation gap: Progress and inequality in Arab countries of the MENA region","authors":"Kaycie Lane,&nbsp;Johana Tanous,&nbsp;Shannon Bartelt-Hunt,&nbsp;May A. Massoud","doi":"10.1007/s10661-025-14045-y","DOIUrl":"10.1007/s10661-025-14045-y","url":null,"abstract":"<div><p>Countries in the Middle East and North Africa (MENA) region face water scarcity concerns and challenges to treating wastewater and providing sustainable and equitable sanitation services to the over 500 million people living in 17 identified countries. This study evaluates trends in sanitation access, the percentage of wastewater treated versus collected, equity in service access across wealth quintiles, and the sustainability of services using per capita wastewater production data. The findings reveal that while there have been improvements in access to safely managed sanitation services from 2000 to 2022, the current rate of progress is insufficient to meet Sustainable Development Goal (SDG) 6.2 by 2030 in 13 countries. Notably, although wastewater is often safely collected, less than 50% is safely treated in seven of the eleven countries with available data. The study highlights significant disparities in sanitation access, with wealthier populations having better access to basic services, while poorer communities experience higher rates of open defecation. Additionally, the projected increase in wastewater production due to population growth and the push for universal access to safely managed services will require substantial improvements in treatment capacity. These insights are crucial for policymakers, underscoring the need for resilient infrastructure to achieve SDG 6.2 by 2030 while addressing ongoing equity and sustainability challenges in the region.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875386","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":"Diel variation of hydrochemistry in streams in protected areas in northeastern Brazil","authors":"Pierre Martín Márquez Malarín,&nbsp;Jéssica Carneiro de Souza,&nbsp;Daniela Mariano Lopes da Silva","doi":"10.1007/s10661-025-14026-1","DOIUrl":"10.1007/s10661-025-14026-1","url":null,"abstract":"<div><p>This research investigates the diel variations in nutrient concentrations in preserved streams located in the Cerrado and Atlantic Forest biomes of Bahia, Brazil. By examining both organic and inorganic forms of nitrogen and phosphorus, the study aims to understand how these nutrients fluctuate in response to environmental factors such as precipitation and landscape features. This study contributes to a deeper understanding of nutrient cycling in tropical stream ecosystems, providing insights that could aid in conservation strategies. Water samples were collected every hour using an automatic sampler over a 24-h period, covering both dry and rainy seasons to reflect seasonal variability. The abiotic variables pH, DO, conductivity, and temperature were measured during sampling, and subsequent nutrient analyses were conducted (including nitrate, nitrite, ammonium, and both dissolved and particulate organic nitrogen and phosphorus) along with Chlorophyll-a. This system-wide analysis provides a more comprehensive understanding, enabling us to effectively link nutrient dynamics with environmental conditions. Results indicate that abiotic variables were the only parameters showing diel variation, with higher values during the daytime. A comparison of parameters between Cerrado (M1) and Atlantic Forest (M2) revealed that almost all values were higher in the Atlantic Forest during the rainy season. Our findings suggest that vegetation cover, soil characteristics, and biogeochemical processes in soil and water were more influential in the variations between areas than diel fluctuations.</p></div>","PeriodicalId":544,"journal":{"name":"Environmental Monitoring and Assessment","volume":"197 5","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871338","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}