Ecohydrology & Hydrobiology最新文献

{"title":"Removal of arsenic in freshwater wetland waters using fly ash modified with zirconium-manganese binary oxides","authors":"Ke-Gang Zhang ,&nbsp;Ying Du ,&nbsp;Yu-Ping Cao ,&nbsp;Zhi-Wei Wang ,&nbsp;Kun Zhang ,&nbsp;Yi Jin ,&nbsp;Jun-Hong Bai ,&nbsp;Chun-Gang Yuan","doi":"10.1016/j.ecohyd.2023.03.001","DOIUrl":"10.1016/j.ecohyd.2023.03.001","url":null,"abstract":"<div><div>A new alternative supporting matrix for constructed wetlands was explored using fly ash modified with Zr-Mn binary oxides (Zr-Mn/FA) and examined its performance in the control of arsenic pollution in wetland waters. The prepared matrix was characterized by SEM, XRD and EDS. Batch experiments were performed to investigate the effects of various conditions for the adsorption of arsenic onto Zr-Mn/FA including pH, contact time, concentration, temperature,loading amount of Zr-Mn and co-existing ions. The results showed that Zr-Mn oxides on the surface of Zr-Mn/FA dominated the reaction force between arsenic and adsorbent. The phosphate anion could reduce the adsorption process of arsenite (As(Ⅲ))and arsenate (As(Ⅴ)) when its concentration exceeds 1.0 mg·L⁻¹<span>. The experimental data of both As(Ⅲ) and As(Ⅴ) adsorption on Zr-Mn/FA were well fitted with pseudo-second order kinetic model as well as Langmuir adsorption isotherm model with the maximum adsorption capacities of 70.13 mg·g</span>⁻¹ for As(Ⅲ) and 43.19 mg·g⁻¹ for As(Ⅴ), respectively. The thermodynamic study suggested that the adsorption of As(Ⅲ) and As(Ⅴ) were both endothermic. However, the adsorption of As(Ⅴ) was spontaneous while the opposite conclusion was obtained for As(Ⅲ). The prepared material (Zr-Mn/FA) was then successfully applied in the real water samples from wetland which indicated that Zr-Mn/FA composite could be a promising matrix for constructed wetland to effectively remove inorganic arsenic from water.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 875-883"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127076719","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":"Bacterial community assembly in surface sediments of a eutrophic shallow lake in northern China","authors":"Bo Kuang ,&nbsp;Rong Xiao ,&nbsp;Chen Wang ,&nbsp;Ling Zhang ,&nbsp;Zhuoqun Wei ,&nbsp;Junhong Bai ,&nbsp;Kegang Zhang ,&nbsp;Marco Campos ,&nbsp;Milko A. Jorquera","doi":"10.1016/j.ecohyd.2022.01.005","DOIUrl":"10.1016/j.ecohyd.2022.01.005","url":null,"abstract":"<div><div><span><span><span><span>Anthropogenic perturbations make negative effects on wetland ecosystems, such as increasing levels of </span>eutrophication. Under variable environmental conditions, studying the processes and mechanisms underlying their spatial distribution is critical to biogeochemical significance of </span>microorganisms<span>. In order to understand the changes in sediment bacterial community and their assembly with long-term eutrophication of the Baiyangdian Lake of China, we explored the </span></span>microbial communities for 24 surface sediment samples using high throughput sequencing of V3-V4 region of 16S rRNA gene, meanwhile we employed Neutral community model (NCM) to characterize the community assembly processes. Then, the β-nearest taxon index (βNTI) based on a null model was used to provide a quantitative description of the assembly processes of the bacterial community. Dispersal limitation, quantified by βNTI, accounted for ∼64.6% of all assembly processes. As the increasing levels of eutrophication, deterministic processes of bacterial community assembly may be enhanced. Moreover, the significant correlation between the βNTI and change in water NO</span>₃⁻<span> or sediment pH might lead to deterministic processes. There was some selection pressure acting within the Baiyangdian lake sediments. The neutral community model properly explained bacterial community assembly. The NO</span>₃⁻, NH₄⁺, pH and EC were main influencing factors on the composition of the bacterial community. The overlying water NO₃^−,<span> surface water NO</span>₃⁻ and sediment pH were the three most crucial environmental factors to drive bacterial assembly. The findings revealed that Group 4 with relatively stronger deterministic processes as a more eutrophic area should be monitored as an indicator for eutrophication governance.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 828-838"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72926059","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":"Determination of the ecological water levels in shallow lakes based on regime shifts: A case study of China's Baiyangdian Lake","authors":"Xinyu Liu ,&nbsp;Wei Yang ,&nbsp;Xianting Fu ,&nbsp;Xiaoxiao Li","doi":"10.1016/j.ecohyd.2023.08.014","DOIUrl":"10.1016/j.ecohyd.2023.08.014","url":null,"abstract":"<div><div><span>Water level management is an effective way to promote ecological restoration of shallow lakes. However, efforts to achieve an ecologically suitable water level often emphasize keeping water above the minimum water level and reducing water level fluctuations, but ignore the purpose of maintaining the ecosystem's stability and health. In this paper, we developed a PCLake model to determine the optimal monthly ecological water level with the goals of stably achieving clear water and maintaining ecosystem health. We simulated the regime shifts between eutrophic and oligotrophic in China's Baiyangdian Lake, and determined that the critical P loadings during eutrophication and oligotrophication were 1.57 and 0.835 mg/m</span>²/day, respectively. The annual and monthly optimal water levels ranged from 7.8 to 8.6 m and from 7.6 to 8.6 m, respectively. Our results provide a scientific basis for the ecological restoration of Baiyangdian Lake.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 931-943"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125455020","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":"Climate change in the Biebrza Basin—Projections and ecohydrological implications","authors":"Paweł Marcinkowski,&nbsp;Mikołaj Piniewski,&nbsp;Mateusz Grygoruk,&nbsp;Dorota Mirosław-Świątek","doi":"10.1016/j.ecohyd.2024.04.006","DOIUrl":"10.1016/j.ecohyd.2024.04.006","url":null,"abstract":"<div><div>Over the last decades observed climate change in Poland had a significant impact on the condition and functioning of the environment. Thus, it is crucial to analyze further future changes to be able to cope with the potential effects of changing climate conditions. In this study, we aimed to assess the impact of projected climate change on meteorological and hydrological conditions in the Biebrza Basin. We analyzed seasonal and annual changes in air temperature, precipitation, streamflow and flood characteristics using the hydrological Soil and Water Assessment Tool (SWAT) model. We examined projected changes for two future time horizons (2024–2050 and 2074–2100) under the Representative Concentration Pathways (RCP) 4.5 and 8.5 using an ensemble of nine EURO<img>CORDEX model scenarios. Climate change projections indicated an increase in precipitation by up to +17 % (+117 mm) and air temperature by up to 3.8 °C by the end of the 21st century. In the analyzed flow gauges a considerable increase in low and mean flows is projected in the future. High flows are projected to slightly decrease for Sztabin, remain at a similar level for Dębowo and slightly increase for Osowiec and Burzyn. Flood area and volume will slightly increase in future horizons. The greatest increase in flood duration (by up to 16 days) is projected for RCP8.5 by the end of the 21st century. It seems, that the expected hydrological conditions, both in the short and long term, will become more stable and improve the conditions for the development of wetlands.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 796-807"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141027490","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":"How wet are water plants? Determination of macrophyte leaf water repellency","authors":"Jonas Schoelynck ,&nbsp;Ewa Papierowska ,&nbsp;Daria Sikorska ,&nbsp;Jan Szatyłowicz","doi":"10.1016/j.ecohyd.2023.08.007","DOIUrl":"10.1016/j.ecohyd.2023.08.007","url":null,"abstract":"<div><div>Leaf water repellency (LWR) is a very important plant trait that influences plant performance in many different ways in different habitats. Being always in contact with water, the conditions for aquatic plants (macrophytes) are very different than for terrestrial plants and many of the advantages of high water repellency are less relevant for submerged macrophyte leaves. This paper is the first to determine the LWR of submerged leaves of 6 common macrophyte species by measurements of a contact angle between a water droplet and the leaf surface. Contact angles varied between 30° and 80°, classifying all species as hydrophilic. Yet significant interspecific differences were found. Differences between the ab- and adaxial leaf sides were small. The presence of a biofilm changed contact angles across species by about 20° in a positive or negative direction, depending on periphyton mass. Potential ecological effects of variation in LWR are discussed for macrophytes and manipulation of the biofilm by the plants to optimize LWR is hypothesized.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 730-737"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117178906","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":"Spatial variability of dissolved organic matter in the water-sediment systems in the Baiyangdian Lake","authors":"Jinfeng Liang ,&nbsp;Junhong Bai ,&nbsp;Ling Zhang ,&nbsp;Kegang Zhang ,&nbsp;Chen Wang ,&nbsp;Zhuoqun Wei ,&nbsp;Yaqi Wang ,&nbsp;Haizhu Liu","doi":"10.1016/j.ecohyd.2022.07.004","DOIUrl":"10.1016/j.ecohyd.2022.07.004","url":null,"abstract":"<div><div><span>Dissolved organic matter (DOM) is widespread in natural water bodies and plays an essential role in ecological processes of </span>aquatic ecosystems<span><span>. However, spatial variability of DOM in shallow lakes is still kept unclear. Surface water, overlaying water and sediment samples were collected at 61 sampling sites in the whole Baiyangdian Lake to investigate spatial variability and distribution patterns of organic matter contents in three environmental compartments using geostatistical analysis. Results showed that organic matter (OM) contents in sediments were higher with medium variability, and lower DOM content occurred in surface water, with medium variability in overlying waters and high variability in surface waters. The highest DOM contents in waters and OM in sediments appeared in Zaolinzhung (ZLZ) and Zaozhadian (ZZD), respectively, while a relatively low contents appeared in ZLZ sediments. DOM in surface water and overlying water were negatively correlated with OM in sediments. Semi-variance functions showed that a strong spatial </span>autocorrelation<span> for DOM in waters, while OM in sediments had a medium spatial correlation. The autocorrelation distance of DOM in waters was between 1.16 km and 11.70 km, and OM in sediments was 4.25 km. The findings of this work can contribute to better understanding spatial variability of OM, which would provide a guidance for the sampling optimization of waters and sediments in the Baiyangdian Lake and lake sustainable management.</span></span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 857-863"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123706790","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 pollution and ecological risk assessment of surface sediments covered by emerged and submerged plants in a shallow lake","authors":"Haizhu Liu ,&nbsp;Junhong Bai ,&nbsp;Kegang Zhang ,&nbsp;Chen Wang ,&nbsp;Jinfeng Liang ,&nbsp;Ling Zhang ,&nbsp;Yaqi Wang ,&nbsp;Rong Xiao","doi":"10.1016/j.ecohyd.2022.07.002","DOIUrl":"10.1016/j.ecohyd.2022.07.002","url":null,"abstract":"<div><div>Surface sediments were collected to investigate the pollution levels and ecological risks of heavy metals (e.g., As, Ni, Pb, Cu, Zn, Cr, Cd, and Mn) in the surface sediments covered by emerged and submerged plants in the main areas of the Baiyangdian Lake. The results showed that Pb and Cd highly exceeded the background values of Hebei Province and had high pollution levels, while other heavy metals exhibited no pollution. With the exception of Mn, there was no significant difference in the concentrations of heavy metals in surface sediments between the emerged-plant and submerged-plant zones. The concentrations of heavy metals in Zaolinzhuang were relatively low, while those in Wangjiazhai, Nanliuzhuang and Shaochedian were relatively high. In the two plant zones, Cd in surface sediments posed a considerable risk at all sampling sites regardless of plant zones, followed by Pb with light pollution level. Correlation analysis and factor analysis results showed that all these heavy metals generally originated from three different sources in both plant zones, of which As, Cu and Zn had two sources in the emerged plant zones. Our findings indicate that Cd and Pb pollution of the Baiyangdian Lake should be given more attention to contribute to the environmental control and ecosystem conservation of the lake.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 849-856"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129962803","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":"Typical vegetation dynamics and hydrological changes of Dongting Lake wetland from 1985 to 2020","authors":"Yao Liu ,&nbsp;Jingtai Li ,&nbsp;Dandan Yan ,&nbsp;Li Chen ,&nbsp;Min Li ,&nbsp;Zhaoqing Luan","doi":"10.1016/j.ecohyd.2023.04.008","DOIUrl":"10.1016/j.ecohyd.2023.04.008","url":null,"abstract":"<div><div><span>Dongting Lake wetland provides important ecosystem functions for water regulation and biodiversity protection. However, the construction of the Three Gorges Dam has seriously affected the wetland hydrology and landscape. Therefore, it is of great significance to study the landscape dynamics of Dongting Lake wetland and its response to hydrological changes. Based on GEE cloud platform, this paper will obtain the long-term landscape dynamic changes of Dongting Lake wetland and analyze the influence of changes of multi-period water conditions on wetland landscape. The results show that, 1) From 1985 to 2020, the typical vegetation area of Dongting Lake wetland changed obviously on the whole lake scale. The evolution of wetland landscape pattern mainly occurred in East Dongting Lake, west of South Dongting Lake and north of West Dongting Lake. 2) According to the M-K method, the water level data of Dongting Lake showed a sudden change in 2003. This led to the decline of the annual water level of Dongting Lake and the decline of the water level during the wet season and retreating season. 3) The main hydrological variables affecting the change of the area of </span><em>C. brevicuspis</em>(<em>Carex brevicuspis</em>) and <em>P. australis</em>(<em>Phragmites australis</em>) in Dongting Lake wetland are the mean water level and minimum water level in wet season, and the mean water level, the minimum water level and the maximum water level in retreating season. This study can be used as a theoretical foundations to protect and restore the wetlands of Dongting Lake and manage the Three Gorges project.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 910-919"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134046215","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":"Two centuries of changes - revision of the hydrography of the Biebrza Valley, its transformation and probable ecohydrological challenges","authors":"Marta Stachowicz,&nbsp;Nelson Venegas-Cordero,&nbsp;Pouya Ghezelayagh","doi":"10.1016/j.ecohyd.2023.08.008","DOIUrl":"10.1016/j.ecohyd.2023.08.008","url":null,"abstract":"<div><div><span>Human-induced changes in hydrography have led to serious changes in the hydrological and ecological condition of ecosystems, including habitat fragmentation and reduction of water in the landscape. The aim of this study was to assess the transformation of the hydrographic network in the Biebrza National Park (BbNP) over the XIX-XXI centuries and to analyze its probable ecohydrological challenges. The analysis of changes in the hydrographic network was based on a spatial comparison of hydrographic network elements on the basis of spatial sources. As a result of both natural and human-induced processes, there have been significant changes to elements of the hydrographic network of the BbNP. The length, area and sinuosity of the rivers in the BbNP area have decreased significantly in the XIX-XXI centuries, in contrast to the length of the canals dug in the XIX century - their length increased. On average, river channelization reduced channel water storage capacity by 49%. In other cases the average decrease of storage capacity of the channel was about 14%. As a result of drainage works in the XIX century, the network of drainage ditches was established in the BbNP, which was significantly extended (more than 6 times) in the XXI century. A comprehensive analysis of hydrographic changes, their causes and possible consequences is necessary to understand the dynamics of river networks. It also makes it possible to predict the future ecohydrological response of rivers to anthropogenic influences and climate change, thus helping to establish appropriate management and ecohydrological restoration of </span>aquatic ecosystems.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 738-748"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125415816","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":"Advances and hotspots of phosphorus form analysis of sediments based on different extraction methods using CiteSpace","authors":"Ruoxuan Tang ,&nbsp;Junhong Bai ,&nbsp;Ling Zhang ,&nbsp;Yaqi Wang ,&nbsp;Haizhu Liu ,&nbsp;Jiangbao Xia","doi":"10.1016/j.ecohyd.2023.03.003","DOIUrl":"10.1016/j.ecohyd.2023.03.003","url":null,"abstract":"<div><div>Phosphorus (P) forms in sediments can be affected by various environmental factors, and P transformation in the water-sediment interface contributes to the eutrophication<span> of water bodies. Therefore, a series of methods have been proposed to extract P forms in sediments. In order to explore the progress and research hotspots of P form analysis of sediments using different extraction methods, the core collection of Web of Science is taking as data source, and the CiteSpace knowledge map analysis tool is used to carry out visual analysis from the aspects of publication output, country analysis, publishing institution analysis, keyword analysis, literature co-citation analysis, burst terms analysis, and cluster analysis. The literature on the extraction methods for P form analysis of sediments was found to have boomed from 2013 to 2022, with higher contributions from China, France and United States. The cluster analysis of keywords and co-citation clarified the main research frontiers and hotspots. The bioavailability, migration and transformation mechanisms of P forms will become a new hotspot in this field in the future.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"24 4","pages":"Pages 884-892"},"PeriodicalIF":2.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122816531","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}