Xiaoxiao Ju , Cun Du , Fan Feng , Demin Zhou , Xiangzheng Deng
{"title":"An eco-hydrological model for modelling hydrological processes in a riparian wetland with the unclosed boundary","authors":"Xiaoxiao Ju , Cun Du , Fan Feng , Demin Zhou , Xiangzheng Deng","doi":"10.1016/j.ecohyd.2022.03.001","DOIUrl":"10.1016/j.ecohyd.2022.03.001","url":null,"abstract":"<div><div><span>It has always been one of the key problems of wetland science to explore the ecological-hydrological interaction mechanism of plants in floodplain wetland. However, the current traditional hydrological model cannot reveal effectively and quantitatively the hydrological process from the spatiotemporal method due to the complex multi-interface features of wetland. In this paper, we constructed innovatively a distributed model for Modelling of the Eco-hydrological process between the Interaction of Surface water & Soil water in Wetlands environment (MEISSW) on the unclosed boundary of Honghe National Nature Reserve (HNNR) in Sanjiang Plain, Northeast China. It is the first effort globally to establish the MEISSW model on the aim at simulating the spatiotemporal transformation characteristics of surface water and soil water in a riparian wetland. Four rainfall events with different hydrological and meteorological characteristics were used to calibrate parameters, and the other three rainfall events were used for verification. Results showed the model was generally credible and highly correlated with the Pearson correlation coefficient (PEARSON) as its 0.76 simulation result on the soil water and 0.64 as the NASH coefficient on the surface water. This model is not only helpful to understand the characteristics of the process interaction between </span>plant ecology and water in the interaction zone, but also useful to quantify and predict the change of ecological base flow within the wetland habitats caused by the human disturbance, and its impact on the spatial pattern of the wetland plant community.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 839-848"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132407855","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}
Ling Zhang , Junhong Bai , Kegang Zhang , Zhuoqun Wei , Yaqi Wang , Haizhu Liu , Rong Xiao , Milko A. Jorquera
{"title":"Characteristics of bacterial community structure and diversity in overlying water and sediments with Lotus in the Baiyangdian Lake, China","authors":"Ling Zhang , Junhong Bai , Kegang Zhang , Zhuoqun Wei , Yaqi Wang , Haizhu Liu , Rong Xiao , Milko A. Jorquera","doi":"10.1016/j.ecohyd.2023.03.004","DOIUrl":"10.1016/j.ecohyd.2023.03.004","url":null,"abstract":"<div><div><span>Bacterial communities<span><span> in water and sediments are important decomposers of lake ecosystem<span>. However, the differences in bacterial community structure and biodiversity in overlying water and sediments covered by aquatic plants such as Lotus in lake ecosystems are still poorly understood. Here we collected paired overlying water and sediments in the Baiyangdian (BYD) Lake to explore their characteristics of bacterial community. Our results showed that bacterial diversity indices such as Sobs, Shannon, Simpsoneven and </span></span>Phylogenetic<span> diversity in sediment samples were significantly higher than those in overlying water samples, which were mainly affected by ofloxacin<span><span> (OFL), dissolved oxygen and pH in the overlying water, while norfloxacin (NOR), OFL and </span>sulfapyridine (SPD) in sediments. Dominant phyla across all overlying water samples were Actinobacteriota (36.65%)</span></span></span></span><em>,</em> Proteobacteria (29.12%) and Patescibacteria (17.01%), while Proteobacteria (20.97%)<em>,</em><span><span> Chloroflexi (19.56%) and Actinobacteriota (13.37%) in all sediment samples. Source Tracker results showed that about 6.59 ± 1.9% of the variations in bacterial community in sediments could be attributed to the contribution of the overlying water bacterial community, which is higher than that of sediments to the overlying water bacterial community. The dominant factors shaping the bacterial communities in the overlying water were NOR, </span>dissolved organic carbon (DOC) and total phosphorus, while in sediments were NOR, OFL and DOC. It is suggested that antibiotics (especially NOR) may have a substantial effect on bacterial community rather than interaction of environmental compartments (overlying water and sediments), and would help to improve the understanding of bacteria transfer and coalescence in a shallow lake ecosystem.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 893-900"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120980881","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}
Jingtai Li , Li Chen , Cuiling Wu , Min Li , Dandan Yan , Siying Xie , Zhaoqing Luan
{"title":"Status of river-connected lakes under the influence of the Three Gorges Dam: research progress and prospect","authors":"Jingtai Li , Li Chen , Cuiling Wu , Min Li , Dandan Yan , Siying Xie , Zhaoqing Luan","doi":"10.1016/j.ecohyd.2023.08.012","DOIUrl":"10.1016/j.ecohyd.2023.08.012","url":null,"abstract":"<div><div><span>The construction and operation of the Three Gorges Dam, the world's largest dam, has provided important support for national economic development and drinking water safety. However, the </span>dam's construction<span><span> has had a non-negligible impact on the ecosystem condition of lake wetlands in the middle and lower reaches of the Yangtze River, which has become a significant theme in recent scientific researches and policy works. Although previous studies have carried out detailed assessments of the relationship between the Three Gorges Dam and downstream lake wetland ecosystems, there has not been a comprehensive discussion. Based on the bibliometric method and the systematic collation of related research, this paper comprehensively reviewed the research progress and hot topics of the river-connected lakes in the middle and lower reaches of the Yangtze River under the influence of the Three Gorges Project. The results show that the number of related studies continued to grow during the study period, involving multiple research fields. The research hotspots focused on five fields: schistosomiasis, </span>remote sensing monitoring of the landscape, water quality, water level and sediment. The disturbance of the Three Gorges Dam on lake water level, landscape heterogeneity and habitat quality may be the focus of further research. In addition, this study presents challenges and recommendations for future research directions. This paper aims to provide a constructive reference for the management of the Three Gorges Dam and the conservation and restoration of lake wetland ecosystems.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 920-930"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122723848","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":"Spatiotemporal responses of ecosystem service values to land use/cover changes in the Baiyangdian region, China","authors":"Lixiang Wen, Junhong Bai, Yaqi Wang, Yanan Guan, Liehui Zhi, Ruoxuan Tang","doi":"10.1016/j.ecohyd.2023.12.007","DOIUrl":"10.1016/j.ecohyd.2023.12.007","url":null,"abstract":"<div><div><span><span>Intense human activities have altered the land use/land cover (LULC) patterns of lake basins, posing a major challenge to ecosystem sustainability. However, the impacts of land use/cover changes (LUCCs) on ecosystem service value (ESV) of lake basins remain unclear. Here, we investigated ESV of the Baiyangdian (BYD) region from 1980 to 2020 based on value equivalent method, assessed spatial differences of ESVs using hot/cold-spot mapping method, and explored the impact of LUCCs on ESVs in combination with elasticity coefficients. The results showed that (1) the study area was dominated by marsh (50.53 %), </span>water bodies (21.84 %) and cropland (20.28 %) in 2020. Marsh, forestland and grassland significantly decreased from 1980 to 2010, and cropland rapidly rose reaching a peak. Marsh, grassland and water bodies increased during 2010–2020, while cropland decreased. (2) Total ESV was 3469.14 million yuan in 2020, a decrease of 5.77 % compared to 1980 (3681.41 million yuan), mainly due to the decrease in marsh area. (3) ESV hot spots were mainly distributed in the middle part of the region, consistent with water bodies, and ESV cold spots were mainly distributed on the edges of the region, consistent with cropland. The spatial distribution of ESVs varied widely, with an increasing trend. (4) The elasticity coefficients of ESVs to LULC were all greater than 1, indicating that ESVs responded significantly to LUCCs. Overall, there was a strong temporal and spatial correlation between LULC and ESV. This study will provide valuable references for optimizing land use policies and </span>ecological restoration plans and promoting the improvement of ESVs in shallow lakes.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 958-967"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139515400","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}
Nelson Venegas-Cordero, Paweł Marcinkowski, Marta Stachowicz, Mateusz Grygoruk
{"title":"On the role of water balance as a prerequisite for aquatic and wetland ecosystems management: A case study of the Biebrza catchment, Poland","authors":"Nelson Venegas-Cordero, Paweł Marcinkowski, Marta Stachowicz, Mateusz Grygoruk","doi":"10.1016/j.ecohyd.2024.08.001","DOIUrl":"10.1016/j.ecohyd.2024.08.001","url":null,"abstract":"<div><div>Water balance quantifies the inflows and outflows in a river basin, crucial for assessing the water resources of a given area. Quantified water balance should therefore be the key step in environmental quality assessment. However, due to the lack of data on reasonable spatiotemporal scales and quality, water balance studies are scarce. The aim of the paper was to provide a water balance analysis as a prerequisite for aquatic and wetland ecosystems management in the Biebrza Valley, Poland. A Penck-Oppokov method was used to assess the annual water balance, and runoff coefficient for 1951–2021. Data were extracted for the daily simulated dataset of Poland. The average annual water balance of the Biebrza basin encompassed of 561 mm of precipitation, 485 mm of evapotranspiration, 101 mm of runoff, and −25 mm of water retention. Analysis of 17 sub-basins indicated a declining tendency in water resources over the study period. The average runoff coefficient in the Biebrza basins is equal to 0.17. Findings presented here indicate that the significant deficit in the water balance in the region is highly unlikely to be compensated by the course of natural hydrological processes. This reveals the need for quick actions oriented at improvement of water balance by reducing the runoff and evapotranspiration. The study provides convincing evidence that if the observed tendencies of water balance elements are continued, the reinstallation of spatially distributed, abundant measures of increasing water retention may be the only way to assure the appropriate ecological status of aquatic and wetland ecosystems.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 808-819"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158939","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}
Yanan Liang , Zhaoning Gong , Yuxin Zhao , Yan Yang
{"title":"Assessing the influence of the ecological restoration project on the submerged aquatic vegetation in the Baiyangdian Lake, northern China","authors":"Yanan Liang , Zhaoning Gong , Yuxin Zhao , Yan Yang","doi":"10.1016/j.ecohyd.2022.12.006","DOIUrl":"10.1016/j.ecohyd.2022.12.006","url":null,"abstract":"<div><div>Submerged aquatic vegetation (SAV) is a key indicator for the restoration of wetland water environments and aquatic ecosystems<span><span>. In this paper, SAV life history information was used to identify and analyze the spatial distribution of dominant SAV species in Baiyangdian Lake from 2017 to 2021 with Sentinel-2 image data, during the implementation of an ecological restoration project. The results show that: (1) The SWIR1_NIR index can achieve significantly accurate identification of SAV, with an accuracy of more than 88%. Combining life history features enabled researchers to distinguish the dominant SAV species with a classification accuracy of 68.75% and Kappa coefficient of 0.64. (2) The ecological restoration project did not significantly affect the spatial distribution of SAV; the SAV was still distributed in the northern, northwestern, southwestern, and shallow coastal areas of the lake. (3) Annually, dominant SAV species area in Baiyangdian Lake varied with the season. (4) Inter-annually, the overall distribution area of SAV in Baiyangdian Lake initially decreased and then increased. The results of this study are useful for the </span>dredging<span> and pollution control project of Baiyangdian Lake, and provide a scientific basis for the subsequent comprehensive treatment of SAV in the lake through multiple measures.</span></span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 864-874"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123769866","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":"Heavy metal contamination risk assessment of commercial fish in China's Dongting Lake","authors":"Dong Liu, Hong Li, Chongrui Wang, Xiping Yuan","doi":"10.1016/j.ecohyd.2023.08.015","DOIUrl":"10.1016/j.ecohyd.2023.08.015","url":null,"abstract":"<div><div><span>Rapid urbanization, industrialization, and intense agricultural practices in the cities and communities along the rivers have resulted in potentially toxic elements, such as heavy metals<span><span><span>, being released into the river water and subsequently deposited into Dongting Lake, thereby posing a severe threat to fish, invertebrates, and humans. In this work, eight fish species, representing different kinds of feeding habits and living habitats, were collected from Dongting Lake, China. The concentration of heavy metals in the specimens was determined. Parameters related to fish consumption, such as food safety and health risks, were calculated. In descending order, the average heavy </span>metal concentrations<span> in the fish followed the trend: Zn>Cu>Pb>Cr>Cd>Hg. Moreover, some species of fish have concentrations of Cd and Pb that exceed food safety standards. The concentration of distinct heavy metals varied widely, but the total concentration trended as follows: predatory, omnivorous > filter > herbivorous, benthic > </span></span>pelagic fish<span>. The hazard quotient and hazard index values were < 1 for all trophic levels of fish, suggesting that consuming the muscle from fish retrieved from Dongting Lake may not present a potential human health risk to adults in terms of heavy metal contamination. Nevertheless, we recommend that </span></span></span><span><em>Cyprinus carpio</em><em>, Carassius auratus,</em></span> and <span><em>Silurus asotus</em></span><span> should be consumed less, and that pollution prevention and control measures should be implemented to reduce Pb, Cd and Cr pollution.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 944-949"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133527780","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":"Eukaryotic plankton size structure and species composition in the wetland lakes","authors":"Yuntao Li , Kesai Liu , Jiajun Yu , Jianjun Hou","doi":"10.1016/j.ecohyd.2024.03.001","DOIUrl":"10.1016/j.ecohyd.2024.03.001","url":null,"abstract":"<div><div><span>Eukaryotic plankton play an important role in the wetland lake ecosystems. However, the size structure and species composition of eukaryotic plankton in shallow wetland lake ecosystems remains largely unexplored. To address this gap, our study employed high-throughput sequencing and </span>quantitative PCR<span><span> techniques to investigate the size structure (pico-0.7–5 μm and nano-5–20 μm) and species composition of eukaryotic plankton in two shallow wetland lakes in China during August 2016. Our findings reveal that the diversity index values of the pico-size fraction were significantly higher than those of the nano-size fraction. Additionally, there was a significant difference in community structure between these two size fractions. Furthermore, different dominant taxa were associated with each particle size, with certain lineages being enriched exclusively in one of the size fractions. In particular, biomarkers differed between the pico- and nano- fractions. The abundance of the 18S </span>rDNA gene did not differ significantly between the two fractions. However, there was a significant difference in the abundance of gene transcripts. Moreover, the pico- fraction exhibited a significantly higher rRNA: rDNA ratio compared to the nano- fraction. It is important to note that certain taxa had lower absolute abundance in specific samples, despite their higher relative abundance.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 968-976"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140399761","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}
Peidong Yu , Hao Cui , Junhong Bai , Guozhu Chen , Haizhu Liu , Zhe Liu , Jiangbao Xia
{"title":"Adsorption and desorption of Cu, Zn, Pb, and Cd on surface sediments from a shallow lake, North China","authors":"Peidong Yu , Hao Cui , Junhong Bai , Guozhu Chen , Haizhu Liu , Zhe Liu , Jiangbao Xia","doi":"10.1016/j.ecohyd.2022.01.002","DOIUrl":"10.1016/j.ecohyd.2022.01.002","url":null,"abstract":"<div><div><span>The processes of adsorption and desorption of heavy metal ions on sediments is of great significance for water quality conservation. To investigate the adsorption and release characteristics of heavy metals on sediments from shallow lakes, an isothermal adsorption and desorption experiment of Cu</span><sup>2+</sup>, Zn<sup>2+</sup>, Pb<sup>2+</sup>, and Cd<sup>2+</sup><span><span> on sediments from Baiyun Lake was carried out. Our results showed that sediments demonstrated a strong capacity of absorbing these heavy metal ions in a </span>sorption<span> system. The maximum sorption capacity for heavy metals on sediments followed the order Pb</span></span><sup>2+</sup>> Cd<sup>2+</sup>> Cu<sup>2+</sup>> Zn<sup>2+</sup>. The followed order of the maximum buffer capacities for heavy metals was Pb<sup>2+</sup> > Cu<sup>2+</sup> > Zn<sup>2+</sup> > Cd<sup>2+</sup>. The Langmuir isotherms model can better fit the adsorption of Cu<sup>2+</sup>, whereas the Freundlich isotherm model for the adsorption of Zn<sup>2+</sup>, Pb<sup>2+</sup>, and Cd<sup>2+</sup>. In the maximum initial concentration treatment, Pb exhibited the highest desorption amount, followed by Cu and Zn, whereas the lowest amount of Cd was observed. The exponential and quadratic functions could describe the relationships of adsorption and desorption. In the maximum initial concentration treatment, the adsorption rates of these four heavy metals followed the order Pb<sup>2+</sup> > Cd<sup>2+</sup>> Cu<sup>2+</sup>> Zn<sup>2+</sup>, whereas the desorption rates followed an opposite order. The hysteresis index (HI) values for Zn was smaller than 1, whereas the HI values for Cu and Cd were slightly larger than 1, suggesting slightly negative hysteresis processes. However, the HI value of Pb was larger than 1, indicating that Pb<sup>2+</sup> was easily desorbed from sediments.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 820-827"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143158938","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}
Elżbieta Jekatierynczuk-Rudczyk , Adam Więcko , Katarzyna Puczko , Maciej Karpowicz , Piotr Zieliński
{"title":"Assessing temporal changes in the quantity and quality of shallow groundwater in the Biebrza valley in the 21st century","authors":"Elżbieta Jekatierynczuk-Rudczyk , Adam Więcko , Katarzyna Puczko , Maciej Karpowicz , Piotr Zieliński","doi":"10.1016/j.ecohyd.2023.12.001","DOIUrl":"10.1016/j.ecohyd.2023.12.001","url":null,"abstract":"<div><div>Wetlands play a crucial role in the hydrological cycle, controlling flood generation, dry season flows, and water quality. This emphasizes the part of the Biebrzański National Park in protecting naturally valuable habitats. Our research aimed to assess (quantitatively and qualitatively) the state of groundwater affecting the condition of wetlands. The analyses carried out in 2021 were compared with the results of hydrological and hydro-chemical mapping of the first groundwater level from 1998.</div><div>Quaternary formations serve as the main groundwater reservoir in the Biebrza Valley. These formations consist of pore water located at shallow depths, usually ranging from 0.5 to 10.95 meters. Most often, the first aquifer occurred at 1–3 meters deep. No significant reduction was observed when comparing the current water table levels with data from 1998. More than half of the surveyed dug wells are used for economic purposes. The Biebrza River is an outflow for shallow groundwater, as the hydroizohypses system indicates.</div><div>The shallow groundwater resources in the Biebrzański National Park include mainly low and medium mineralization waters. A significant increase in the concentration of nitrogen compounds (NH<sub>4</sub><sup>+</sup>-N, NO<sub>2</sub><sup>−</sup>-N, and NO<sub>3</sub><span>–N), phosphorus, and dissolved organic carbon was recorded. This trend is evident in areas with intensive cattle breeding and is associated with excessive use of manure and slurry. The research confirmed the mosaic nature of the chemical composition observed in 1998 and the wide range of variability of the chemical properties of shallow groundwater.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 785-795"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138691676","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}