Ecohydrology & Hydrobiology最新文献_第6页

Green transformation pathways in the water sector under the ‘Dual carbon’ framework: a case study of anhui province, East China “双碳”框架下水务行业绿色转型路径研究——以安徽省为例

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-09-11 DOI: 10.1016/j.ecohyd.2025.100692

Shuguang Zhu , Changqing Wang , Mengqi He , Wei Wei , Binyu Chen , Yuqi Feng , Yun Wan

Under the dual backdrop of global climate change and the "dual carbon" goals, the water industry, as a significant sector in terms of energy consumption and carbon emissions, urgently needs systematic research on its green transformation path. This paper takes Anhui Province in East China as an example to construct a full life cycle carbon emission accounting framework covering the three major systems of water supply, sewage and stormwater, and clarifies the system boundaries and accounting methods. Research shows that the carbon emissions of the water affairs system in Anhui Province mainly come from electricity consumption and material usage, among which the sewage system contributes the most. Meanwhile, this study proposes differentiated emission reduction strategies: The water supply system can achieve emission reduction of approximately 2.35 × 10⁸ kg CO₂-eq through water conservation and pipe network leakage control; The sewage system, through process upgrading, recovery of waste heat energy and energy utilization of sludge, has an emission reduction potential of approximately 3.92 × 10⁹ kg CO₂-eq. Through the rainwater and sewage separation renovation and the construction of sponge cities, the rainwater system can further contribute 5.22 × 10⁷ kg of CO₂-eq carbon sink benefits. Comprehensive assessment indicates that the annual emission reduction potential of the water affairs system in Anhui Province is approximately 7–8 × 10⁸ kg CO₂-eq, significantly supporting the realization of the regional "dual carbon" goals. This study provides methodological support and practical path references for carbon accounting and green transformation of urban-scale water systems.

在全球气候变化和“双碳”目标的双重背景下，水务行业作为能源消耗和碳排放的重要行业，迫切需要对其绿色转型路径进行系统研究。本文以华东地区安徽省为例，构建了覆盖供水、污水、雨水三大系统的全生命周期碳排放核算框架，明确了系统边界和核算方法。研究表明，安徽省水务系统碳排放主要来源于电力消耗和物质使用，其中污水系统碳排放贡献最大。同时，本研究提出了差异化的减排策略：供水系统通过节水和管网渗漏控制，可实现约2.35 × 10⁸kg CO₂-eq的减排；污水系统通过工艺升级、余热回收和污泥能源利用，减排潜力约为3.92 × 10⁹kg CO₂-eq。通过雨水和污水分离改造和海绵城市建设，雨水系统可以进一步贡献5.22 × 10⁷kg CO₂-eq碳汇效益。综合评价表明，安徽省水务系统年减排潜力约为7-8 × 10⁸kg CO₂-eq，显著支持了区域“双碳”目标的实现。本研究为城市尺度水系碳核算和绿色转型提供了方法支持和实践路径参考。

{"title":"Green transformation pathways in the water sector under the ‘Dual carbon’ framework: a case study of anhui province, East China","authors":"Shuguang Zhu , Changqing Wang , Mengqi He , Wei Wei , Binyu Chen , Yuqi Feng , Yun Wan","doi":"10.1016/j.ecohyd.2025.100692","DOIUrl":"10.1016/j.ecohyd.2025.100692","url":null,"abstract":"<div><div>Under the dual backdrop of global climate change and the \"dual carbon\" goals, the water industry, as a significant sector in terms of energy consumption and carbon emissions, urgently needs systematic research on its green transformation path. This paper takes Anhui Province in East China as an example to construct a full life cycle carbon emission accounting framework covering the three major systems of water supply, sewage and stormwater, and clarifies the system boundaries and accounting methods. Research shows that the carbon emissions of the water affairs system in Anhui Province mainly come from electricity consumption and material usage, among which the sewage system contributes the most. Meanwhile, this study proposes differentiated emission reduction strategies: The water supply system can achieve emission reduction of approximately 2.35 × 10⁸ kg CO₂-eq through water conservation and pipe network leakage control; The sewage system, through process upgrading, recovery of waste heat energy and energy utilization of sludge, has an emission reduction potential of approximately 3.92 × 10⁹ kg CO₂-eq. Through the rainwater and sewage separation renovation and the construction of sponge cities, the rainwater system can further contribute 5.22 × 10⁷ kg of CO₂-eq carbon sink benefits. Comprehensive assessment indicates that the annual emission reduction potential of the water affairs system in Anhui Province is approximately 7–8 × 10⁸ kg CO₂-eq, significantly supporting the realization of the regional \"dual carbon\" goals. This study provides methodological support and practical path references for carbon accounting and green transformation of urban-scale water systems.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100692"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738917","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}

引用次数: 0

Conservation and sustainable use of water facing the climate emergency: The need for a polycentric and networked governance 面对气候紧急情况的水资源保护和可持续利用：多中心和网络化治理的必要性

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-11-09 DOI: 10.1016/j.ecohyd.2025.100707

F.A.R. Barbosa , C. d’Andrea , V.S.T. Ciminelli , H.S.M. Costa , E.F. Mortimer , F.C. Sá Barreto , R. Takahashi

We critically examine the current state of aquatic ecosystems, highlighting the escalating demands and the multifaceted impacts faced by them and their biotas. Special emphasis is placed on peculiarities of key sectors capable of producing major impacts, namely: agribusiness, mining, inadequate health and basic sanitation, and technological infrastructures. The urban perspective was also incorporated in the analysis, addressing a projected future of cities and their interactions with water resources, emphasizing the pursuit of sustainability in the context of urbanization, since approximately 70 % of the global population resides in urban areas. The article provides an overview of the major impacts of climate change on aquatic ecosystems, projecting that these effects will become increasingly severe, spatially concentrated, and frequent. To underscore the critical need for action, we advocate for substantial investments in conservation initiatives to restore ecological balance of aquatic ecosystems within planetary limits. Recognizing water as the essential foundation of life on Earth demands particular attention and the urgency for its sustainable use. A polycentric and networked governance, yet to be built, is our suggestion as an effective approach to optimize adaptive actions to face climate change and to realign aquatic ecosystems within planetary boundaries.

我们批判性地审视了水生生态系统的现状，强调了不断升级的需求以及水生生态系统及其生物群所面临的多方面影响。特别强调能够产生重大影响的关键部门的特点，即：农业综合企业、采矿、保健和基本卫生设施不足以及技术基础设施。城市视角也被纳入分析，讨论城市未来的预测及其与水资源的相互作用，强调在城市化背景下追求可持续性，因为全球约70%的人口居住在城市地区。本文概述了气候变化对水生生态系统的主要影响，并预测这些影响将变得越来越严重、空间集中和频繁。为了强调采取行动的迫切需要，我们主张对保护倡议进行大量投资，以在地球限度内恢复水生生态系统的生态平衡。认识到水是地球上生命必不可少的基础，需要特别注意并迫切需要可持续地利用水。我们建议建立一个多中心和网络化的治理，作为优化适应行动以应对气候变化和在地球范围内重新调整水生生态系统的有效方法。

{"title":"Conservation and sustainable use of water facing the climate emergency: The need for a polycentric and networked governance","authors":"F.A.R. Barbosa , C. d’Andrea , V.S.T. Ciminelli , H.S.M. Costa , E.F. Mortimer , F.C. Sá Barreto , R. Takahashi","doi":"10.1016/j.ecohyd.2025.100707","DOIUrl":"10.1016/j.ecohyd.2025.100707","url":null,"abstract":"<div><div>We critically examine the current state of aquatic ecosystems, highlighting the escalating demands and the multifaceted impacts faced by them and their biotas. Special emphasis is placed on peculiarities of key sectors capable of producing major impacts, namely: agribusiness, mining, inadequate health and basic sanitation, and technological infrastructures. The urban perspective was also incorporated in the analysis, addressing a projected future of cities and their interactions with water resources, emphasizing the pursuit of sustainability in the context of urbanization, since approximately 70 % of the global population resides in urban areas. The article provides an overview of the major impacts of climate change on aquatic ecosystems, projecting that these effects will become increasingly severe, spatially concentrated, and frequent. To underscore the critical need for action, we advocate for substantial investments in conservation initiatives to restore ecological balance of aquatic ecosystems within planetary limits. Recognizing water as the essential foundation of life on Earth demands particular attention and the urgency for its sustainable use. A polycentric and networked governance, yet to be built, is our suggestion as an effective approach to optimize adaptive actions to face climate change and to realign aquatic ecosystems within planetary boundaries.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100707"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739110","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}

引用次数: 0

Aquatic mosses as a habitat for the development of mime midges’ (Diptera: Chironomidae) larvae 水生藓类为拟蠓（双翅目：手蛾科）幼虫发育的栖息地

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-11-09 DOI: 10.1016/j.ecohyd.2025.100708

Tymoteusz Matera , Kamil Słomczyński , Jarosław Brodecki , Piotr Gadawski , Grzegorz J. Wolski , Mateusz Płóciennik

Freshwater biodiversity depends on the quality of aquatic vegetation. Unfortunately, due to river regulation and water pollution, the diversity of macrophytes in European lowland streams is decreasing. This also concerns aquatic mosses, which, like all bryophytes, are considered outstanding bioindicators of changes in environmental conditions. Hence, detailed study on mime midges’ communities of water-borne moss (Fontinalis antipyretica) microhabitats in the Rawka River (Central Poland) was carried out in 2023. The study shows a clear difference of Chironomidae communities’ composition on moss and bottom habitats in the Rawka River. The midge assemblages on F. antipyretica differ significantly from those inhabiting the river bottom. Older instars and larger larvae occur outside of the water moss, mainly on the bottom, whereas many smaller species live exclusively on moss and younger instar larvae hide among F. antipyretica twigs. That concerns, for example, Cricotopus bicinctus and Polypedilum convictum, which were both found in the aquatic moss and in the river bottom. That is why F. antipyretica’s presence in the river substantially contributes to the mime midges' biodiversity.

淡水生物多样性取决于水生植被的质量。不幸的是，由于河流治理和水污染，欧洲低地溪流中大型植物的多样性正在减少。这也涉及到水生苔藓，与所有苔藓植物一样，它们被认为是环境条件变化的杰出生物指标。因此，我们于2023年对波兰中部Rawka河水生苔藓（Fontinalis antipyretica）微生境的模拟蠓群落进行了详细研究。研究结果表明，罗卡河中摇蝇科在苔藓和底栖生境上的群落组成存在明显差异。热蝇的蠓群与生活在河底的蠓群有显著差异。较老的幼虫和较大的幼虫出现在水苔藓的外面，主要在底部，而许多较小的物种只生活在苔藓上，较年轻的幼虫隐藏在F. antipyretica的树枝中。例如，这涉及到在水生苔藓和河底都被发现的双纹蟋蟀和扁足蓼。这就是为什么F. antipyretica在河流中的存在极大地促进了哑剧蠓的生物多样性。

{"title":"Aquatic mosses as a habitat for the development of mime midges’ (Diptera: Chironomidae) larvae","authors":"Tymoteusz Matera , Kamil Słomczyński , Jarosław Brodecki , Piotr Gadawski , Grzegorz J. Wolski , Mateusz Płóciennik","doi":"10.1016/j.ecohyd.2025.100708","DOIUrl":"10.1016/j.ecohyd.2025.100708","url":null,"abstract":"<div><div>Freshwater biodiversity depends on the quality of aquatic vegetation. Unfortunately, due to river regulation and water pollution, the diversity of macrophytes in European lowland streams is decreasing. This also concerns aquatic mosses, which, like all bryophytes, are considered outstanding bioindicators of changes in environmental conditions. Hence, detailed study on mime midges’ communities of water-borne moss (<em>Fontinalis antipyretica</em>) microhabitats in the Rawka River (Central Poland) was carried out in 2023. The study shows a clear difference of Chironomidae communities’ composition on moss and bottom habitats in the Rawka River. The midge assemblages on <em>F. antipyretica</em> differ significantly from those inhabiting the river bottom. Older instars and larger larvae occur outside of the water moss, mainly on the bottom, whereas many smaller species live exclusively on moss and younger instar larvae hide among <em>F. antipyretica</em> twigs<em>.</em> That concerns, for example, <em>Cricotopus bicinctus</em> and <em>Polypedilum convictum,</em> which were both found in the aquatic moss and in the river bottom. That is why <em>F. antipyretica</em>’s presence in the river substantially contributes to the mime midges' biodiversity.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100708"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739152","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}

引用次数: 0

Effects of throughfall on the migration of soil dissolved organic matter in subtropical evergreen broad-leaved forest 透雨对亚热带常绿阔叶林土壤溶解有机质迁移的影响

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-04-04 DOI: 10.1016/j.ecohyd.2025.100653

Hongyu Wang , Yaoyi Zhang , Kai Yue , Xiangyin Ni , Xuling Zheng , Fuzhong Wu

Dissolved organic matter (DOM) is a highly dynamic component in forest soils, prone to migration. However, little information has well addressed the processes of soil DOM migration driven by throughfall, although it is well known that throughfall could be closely related to DOM migration in subtropical forests. Therefore, we used a soil column microcosm in situ to analyze the effects of throughfall on the migration processes of DOM, calculated from dissolved organic carbon in a subtropical evergreen broad-leaved forest. Over one-year incubation, throughfall retained three times more DOM in forest soils than rainfall. Specifically, throughfall inputted 29.72 % more DOM into the soil than rainfall, but 21.18 % less DOM outputted from soil driven by throughfall compared with rainfall. Moreover, these retentions mainly happened in the wet season, while DOM loss was common in the dry season, possibly due to understory microclimate-altered soil structure. Relative to rainfall, throughfall enhanced humification, resulting in a greater tendency for DOM in soils to accumulate simple DOM rather than being further transformed. The results take an insight into understanding the increase of soil DOM driven by throughfall compared with rainfall, and highlight the importance of forest canopy in reducing the loss of soil DOM.

溶解有机质（DOM）是森林土壤中一种高度动态的组分，具有迁移倾向。然而，尽管众所周知，通过降雨可能与亚热带森林DOM迁移密切相关，但关于土壤DOM迁移过程的研究却很少。因此，我们利用土壤柱的微观环境，分析了穿透雨对亚热带常绿阔叶林土壤中DOM迁移过程的影响。经过一年的孵化，穿透物在森林土壤中保留的DOM是降雨的三倍。具体而言，通过降雨向土壤中输入的DOM比降雨多29.72%，但通过降雨驱动土壤输出的DOM比降雨少21.18%。此外，这些保留主要发生在雨季，而DOM损失在旱季很常见，可能是由于林下小气候改变了土壤结构。相对于降雨，透雨增强了土壤的腐殖化作用，导致土壤中DOM更倾向于积累简单DOM，而不是进一步转化。研究结果揭示了与降雨相比，通过降雨驱动土壤DOM的增加，并强调了森林冠层在减少土壤DOM损失方面的重要性。

{"title":"Effects of throughfall on the migration of soil dissolved organic matter in subtropical evergreen broad-leaved forest","authors":"Hongyu Wang , Yaoyi Zhang , Kai Yue , Xiangyin Ni , Xuling Zheng , Fuzhong Wu","doi":"10.1016/j.ecohyd.2025.100653","DOIUrl":"10.1016/j.ecohyd.2025.100653","url":null,"abstract":"<div><div>Dissolved organic matter (DOM) is a highly dynamic component in forest soils, prone to migration. However, little information has well addressed the processes of soil DOM migration driven by throughfall, although it is well known that throughfall could be closely related to DOM migration in subtropical forests. Therefore, we used a soil column microcosm in situ to analyze the effects of throughfall on the migration processes of DOM, calculated from dissolved organic carbon in a subtropical evergreen broad-leaved forest. Over one-year incubation, throughfall retained three times more DOM in forest soils than rainfall. Specifically, throughfall inputted 29.72 % more DOM into the soil than rainfall, but 21.18 % less DOM outputted from soil driven by throughfall compared with rainfall. Moreover, these retentions mainly happened in the wet season, while DOM loss was common in the dry season, possibly due to understory microclimate-altered soil structure. Relative to rainfall, throughfall enhanced humification, resulting in a greater tendency for DOM in soils to accumulate simple DOM rather than being further transformed. The results take an insight into understanding the increase of soil DOM driven by throughfall compared with rainfall, and highlight the importance of forest canopy in reducing the loss of soil DOM.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100653"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739160","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}

引用次数: 0

Simulation of water quality and land use impacts in paired watersheds of the Doce river using warm-GIS tools 基于暖gis工具的多斯河成对流域水质和土地利用影响模拟

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-03-30 DOI: 10.1016/j.ecohyd.2025.100652

Marllus Henrique Ribeiro de Paiva , Paula Cristine Silva Gomes , Lívia Cristina Pinto Dias , Aníbal da Fonseca Santiago

The Doce River watershed, which is essential for water supply and power generation in Brazil, as well as sustaining activities such as livestock farming, industry and mining, was marked by the world's biggest environmental and humanitarian tragedy, caused by the collapse of an iron ore dam in 2015. The disaster directly and indirectly affected >200 towns in the states of Minas Gerais and Espírito Santo, impacting riverside communities, traditional peoples and ecosystems such as the Abrólios bank on the coast of Bahia. The study simulated and analyzed water quality (Biochemical Oxygen Demand - BOD and Dissolved Oxygen - DO) in paired watersheds of the Doce River (Piracicaba and Piranga), located in the Iron Quadrangle, a densely populated and economically active region, using coupled hydrological and water quality models (MGB-IPH/WARM-GIS Tools) during the dry season, considering differences in land use and cover. The water quality data was obtained from the databases of the Minas Gerais Water Quality Institute (IGAM) and the National Water and Basic Sanitation Agency (ANA), between 2010 and 2021. The analysis showed that the models simulated the BOD and DO variables well in both sub-watersheds, with DO showing the best statistical performance, with convergence of over 90 % in both sub-watersheds. Approximately 65 % of the watercourses in the two watersheds had BOD classified as Class 2 for freshwaters (between 3 and 5 mg/l). In the Piranga river watershed, 41 % of the stretches had BOD higher than 5 mg/l, while in the Piracicaba river this figure was 48 %, with a higher concentration in urban areas subject to sewage discharge. The concentration of DO varied little between the watersheds, with only 9 % of the stretches showing differences. This suggests that, despite the potential increase in organic matter, natural oxygenation processes such as gas exchange and water temperature were not significantly affected. The study demonstrated that the use of coupled models is an effective approach for representing water quality in watersheds, even with different characteristics and in a catastrophic context, especially when it is not possible to carry out local frequency analyses to support environmental recovery and adaptation actions.

多塞河流域对巴西的供水和发电以及牲畜养殖、工业和采矿等持续活动至关重要，但2015年一座铁矿坝坍塌造成了世界上最大的环境和人道主义悲剧。这场灾难直接或间接地影响了米纳斯吉拉斯州和Espírito圣州的200个城镇，影响了河边社区、传统居民和生态系统，如巴伊亚海岸的Abrólios银行。本研究利用MGB-IPH/暖- gis工具（水文-水质耦合模型），在考虑土地利用和覆盖差异的情况下，对位于人口密集和经济活跃地区铁四合区的多塞河流域（皮拉西卡巴和皮兰加）旱季的水质（生化需氧量- BOD和溶解氧- DO）进行了模拟和分析。2010年至2021年期间的水质数据来自米纳斯吉拉斯州水质研究所（IGAM）和国家水和基本卫生机构（ANA）的数据库。分析表明，模型对两个流域的BOD和DO变量均有较好的模拟效果，其中DO的统计性能最好，收敛率均在90%以上。两个流域中约65%的水道的淡水生化需氧量被列为2级（3至5毫克/升）。在皮兰加河流域，41%的河段BOD高于5 mg/l，而在皮拉西卡巴河，这一数字为48%，在污水排放的城市地区浓度更高。DO的浓度在流域之间变化不大，只有9%的流域表现出差异。这表明，尽管有机质可能增加，但气体交换和水温等自然氧化过程并未受到显著影响。该研究表明，耦合模型的使用是表征流域水质的有效方法，即使具有不同的特征和灾难性的背景，特别是在不可能进行局部频率分析以支持环境恢复和适应行动的情况下。

{"title":"Simulation of water quality and land use impacts in paired watersheds of the Doce river using warm-GIS tools","authors":"Marllus Henrique Ribeiro de Paiva , Paula Cristine Silva Gomes , Lívia Cristina Pinto Dias , Aníbal da Fonseca Santiago","doi":"10.1016/j.ecohyd.2025.100652","DOIUrl":"10.1016/j.ecohyd.2025.100652","url":null,"abstract":"<div><div><span><span>The Doce River watershed, which is essential for water supply and power generation in Brazil, as well as sustaining activities such as </span>livestock farming, industry and mining, was marked by the world's biggest environmental and humanitarian tragedy, caused by the collapse of an </span>iron ore<span><span> dam in 2015. The disaster directly and indirectly affected >200 towns in the states of Minas Gerais and Espírito Santo, impacting riverside communities, traditional peoples and ecosystems such as the Abrólios bank on the coast of Bahia. The study simulated and analyzed water quality (Biochemical Oxygen Demand - BOD and Dissolved Oxygen - DO) in paired watersheds of the Doce River (Piracicaba and Piranga), located in the Iron Quadrangle, a densely populated and economically active region, using coupled hydrological and water quality models (MGB-IPH/WARM-GIS Tools) during the </span>dry season, considering differences in land use and cover. The water quality data was obtained from the databases of the Minas Gerais Water Quality Institute (IGAM) and the National Water and Basic Sanitation Agency (ANA), between 2010 and 2021. The analysis showed that the models simulated the BOD and DO variables well in both sub-watersheds, with DO showing the best statistical performance, with convergence of over 90 % in both sub-watersheds. Approximately 65 % of the watercourses in the two watersheds had BOD classified as Class 2 for freshwaters (between 3 and 5 mg/l). In the Piranga river watershed, 41 % of the stretches had BOD higher than 5 mg/l, while in the Piracicaba river this figure was 48 %, with a higher concentration in urban areas subject to sewage discharge. The concentration of DO varied little between the watersheds, with only 9 % of the stretches showing differences. This suggests that, despite the potential increase in organic matter, natural oxygenation processes such as gas exchange and water temperature were not significantly affected. The study demonstrated that the use of coupled models is an effective approach for representing water quality in watersheds, even with different characteristics and in a catastrophic context, especially when it is not possible to carry out local frequency analyses to support environmental recovery and adaptation actions.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100652"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739157","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}

引用次数: 0

Water resource and sediment yield response under the dynamics of historical and future climate change in Ethiopia 埃塞俄比亚历史和未来气候变化动态下的水资源和产沙量响应

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-04-17 DOI: 10.1016/j.ecohyd.2025.100658

Meseret Bekele Toma , Merihun Fikiru Meja

The purpose of this study is to assess how climate change may affect the water resource components (WRC) and sediment yield (SED) of the Ajora-Woybo watershed in Ethiopia's Omo-Gibe basin. In the watershed, it is yet unknown how WRC and SED will react to climate change. Historical and future climate data were employed using station data and CORDEX-Africa data output under representative concentration pathway (RCP) scenarios (RCP4.5 and RCP8.5). The Soil and Water Assessment Tool (SWAT) is used to assess changes in WRC and SED to climate change. The results show that changes in annual, monthly, and seasonal water resource and sediment yield are consistent with historical and predicted changes in rainfall patterns over the future years. The estimated and predicted future annual and seasonal (Belg and Bega) flow magnitude will decrease while seasonal (kiremt) flow will increase compared to the reference era. These variations follow the course of shifting rainfall. ET increased during the historical and two future periods, although annual WRC and SED decreased. During the future era, ET increased by as much as 11.6 % under RCP8.5, while surface runoff decreased by 3.1 to 6.2 % and 4.8 to 6.7 % under RCP4.5 and RCP8.5, respectively. Changing rainfall patterns and magnitudes are expected to disrupt the WRC directly, while temperature changes are expected to have an indirect impact. For the farmers in the watershed whose only source of income is agriculture, this could mean that there will be less water available in the future, which would become a persistent issue.

本研究的目的是评估气候变化如何影响埃塞俄比亚Omo-Gibe盆地Ajora-Woybo流域的水资源成分（WRC）和产沙量（SED）。在流域，WRC和SED将如何应对气候变化还不得而知。在代表性浓度路径（RCP）情景（RCP4.5和RCP8.5）下，利用台站数据和CORDEX-Africa数据输出的历史和未来气候数据。利用水土资源评估工具（SWAT）评估WRC和SED对气候变化的影响。结果表明，年、月、季水资源产沙量的变化与未来几年降水模式的历史和预测变化一致。与参考时代相比，估计和预测的未来年和季节（Belg和Bega）流量将减小，而季节（kiremt）流量将增加。这些变化随降雨的变化而变化。在历史和未来两个时期，蒸散发增加，而年WRC和SED减少。在RCP8.5和RCP8.5下，地表径流量分别减少了3.1 ~ 6.2%和4.8 ~ 6.7%，而ET增加了11.6%。降雨模式和量级的变化预计将直接扰乱WRC，而温度变化预计将产生间接影响。对于流域内唯一的收入来源是农业的农民来说，这可能意味着未来可用的水将会减少，这将成为一个持久的问题。

{"title":"Water resource and sediment yield response under the dynamics of historical and future climate change in Ethiopia","authors":"Meseret Bekele Toma , Merihun Fikiru Meja","doi":"10.1016/j.ecohyd.2025.100658","DOIUrl":"10.1016/j.ecohyd.2025.100658","url":null,"abstract":"<div><div>The purpose of this study is to assess how climate change may affect the water resource components (WRC) and sediment yield<span> (SED) of the Ajora-Woybo watershed in Ethiopia's Omo-Gibe basin. In the watershed, it is yet unknown how WRC and SED will react to climate change. Historical and future climate data were employed using station data and CORDEX-Africa data output under representative concentration pathway (RCP) scenarios (RCP4.5 and RCP8.5). The Soil and Water Assessment Tool (SWAT) is used to assess changes in WRC and SED to climate change. The results show that changes in annual, monthly, and seasonal water resource and sediment yield are consistent with historical and predicted changes in rainfall patterns over the future years. The estimated and predicted future annual and seasonal (Belg and Bega) flow magnitude will decrease while seasonal (kiremt) flow will increase compared to the reference era. These variations follow the course of shifting rainfall. ET increased during the historical and two future periods, although annual WRC and SED decreased. During the future era, ET increased by as much as 11.6 % under RCP8.5, while surface runoff decreased by 3.1 to 6.2 % and 4.8 to 6.7 % under RCP4.5 and RCP8.5, respectively. Changing rainfall patterns and magnitudes are expected to disrupt the WRC directly, while temperature changes are expected to have an indirect impact. For the farmers in the watershed whose only source of income is agriculture, this could mean that there will be less water available in the future, which would become a persistent issue.</span></div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100658"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739154","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}

引用次数: 0

Spatio-temporal dynamics of tropical phytoplankton communities in the diverse coastal environments of southwestern India: HPLCCHEMTAX approach 印度西南部不同沿海环境中热带浮游植物群落的时空动态：HPLCCHEMTAX方法

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-08-08 DOI: 10.1016/j.ecohyd.2025.100684

Anil P , Madhu NV , Vishal CR , Arya KS , Praveena Sudheesh

A comprehensive investigation on phytoplankton community composition, utilizing HPLC-derived biomarker pigments and CHEMTAX analysis, was conducted in the Chandragiri Estuary (CGE) and adjacent nearshore waters (<20 m, off Kasaragod) along the southwest coast of India during 2018–2019. The CGE exhibited highly dynamic hydrographic conditions, which were reflected in the pronounced spatio-temporal variability of its phytoplankton communities. During non-monsoon periods, particularly the winter monsoon (WM) and spring-inter monsoon (SIM), the estuary was characterized by warm ( >29 °C), well-mixed, polyhaline to euhaline waters (28–35) and relatively elevated concentrations of key nutrients, including ammonium, nitrate and phosphate, These conditions supported moderately high concentrations of chlorophyll a (Chl a) in the CGE, averaging 2.14 ± 0.65 mgm⁻³ during WM and 1.78 ± 0.45 mg m⁻³ during SIM. In contrast, the summer monsoon (SM) period was marked by the influx of cooler (<26 °C), turbid freshwaters, which significantly suppressed phytoplankton biomass, resulting in exceptionally low Chl a levels (<0.2 mg m⁻³) throughout the estuary. In the adjacent nearshore waters, the Chl a concentrations remained consistently low (<1 mg m⁻³) across all seasons. CHEMTAX analysis using HPLC derived pigments identified five major phytoplankton functional groups (PFGs) in the CGE: diatoms, dinoflagellates, cryptophytes, green algae (chlorophytes), and cyanobacteria. Among these, diatoms, cyanobacteria, and chlorophytes were the predominant groups throughout the study period. Diatoms constantly dominated the phytoplankton community in the nearshore waters as well, as indicated by the predominance of fucoxanthin, except during the SIM, when the composition temporarily shifted. The dominance of diatoms in the CGE, despite periodic increases in cyanobacteria and cryptophytes, reflected variability in nutrient availability, particularly NO₃N and PO₄-P, driven by fluctuations in river discharge and tidal influence. Conversely, the nearshore waters exhibited relatively stable hydrographic conditions, which supported a persistent, albeit lower, diatom growth with minimal temporal variability in community structure.

2018-2019年，利用hplc衍生的生物标志物色素和CHEMTAX分析，在印度西南海岸的Chandragiri河口（CGE）和邻近的近岸水域（Kasaragod附近20 m）对浮游植物群落组成进行了全面调查。CGE具有高度动态的水文条件，这反映在其浮游植物群落的显著时空变异性上。在非季风期，特别是冬季季风（WM）和春季季风间期（SIM），河口水温为温暖（29°C），多盐-真盐混合（28-35），关键营养物质（铵、硝、磷酸盐）浓度相对较高，这些条件支持了CGE中较高浓度的叶绿素a (Chl a)，在冬季季风（WM）和春季季风间期（SIM）平均为2.14±0.65 mgm−3和1.78±0.45 mgm−3。相反，夏季风（SM）期的特征是较冷（26°C）的浑浊淡水涌入，这显著抑制了浮游植物生物量，导致整个河口的Chl a水平异常低（0.2 mg m - 3）。在邻近的近岸水域，Chl a浓度在所有季节都保持较低（<1 mg m−3）。使用HPLC衍生色素的CHEMTAX分析确定了CGE中五个主要的浮游植物官能团（PFGs）：硅藻、甲藻、隐藻、绿藻（绿藻）和蓝藻。其中，硅藻、蓝藻和绿藻是整个研究期间的优势类群。硅藻也一直在近岸水域的浮游植物群落中占据主导地位，这一点从岩藻黄质的优势可以看出，除了在模拟水体中，当组成暂时发生变化时。尽管蓝藻和隐藻在CGE中周期性增加，但硅藻在CGE中的优势反映了养分有效性的变化，特别是NO3N和PO4-P，这是由河流流量波动和潮汐影响驱动的。相反，近岸水域表现出相对稳定的水文条件，这支持了硅藻的持续生长，尽管生长速度较低，群落结构的时间变化很小。

{"title":"Spatio-temporal dynamics of tropical phytoplankton communities in the diverse coastal environments of southwestern India: HPLCCHEMTAX approach","authors":"Anil P , Madhu NV , Vishal CR , Arya KS , Praveena Sudheesh","doi":"10.1016/j.ecohyd.2025.100684","DOIUrl":"10.1016/j.ecohyd.2025.100684","url":null,"abstract":"<div><div>A comprehensive investigation on phytoplankton community composition, utilizing HPLC-derived biomarker pigments and CHEMTAX analysis, was conducted in the Chandragiri Estuary (CGE) and adjacent nearshore waters (<20 m, off Kasaragod) along the southwest coast of India during 2018–2019. The CGE exhibited highly dynamic hydrographic conditions, which were reflected in the pronounced spatio-temporal variability of its phytoplankton communities. During non-monsoon periods, particularly the winter monsoon (WM) and spring-inter monsoon (SIM), the estuary was characterized by warm ( >29 °C), well-mixed, polyhaline to euhaline waters (28–35) and relatively elevated concentrations of key nutrients, including ammonium, nitrate and phosphate, These conditions supported moderately high concentrations of chlorophyll <em>a</em> (Chl <em>a</em>) in the CGE, averaging 2.14 ± 0.65 mgm<sup>−3</sup> during WM and 1.78 ± 0.45 mg m<sup>−3</sup> during SIM. In contrast, the summer monsoon (SM) period was marked by the influx of cooler (<26 °C), turbid freshwaters, which significantly suppressed phytoplankton biomass, resulting in exceptionally low Chl <em>a</em> levels (<0.2 mg m<sup>−3</sup>) throughout the estuary. In the adjacent nearshore waters, the Chl <em>a</em> concentrations remained consistently low (<1 mg m<sup>−3</sup>) across all seasons. CHEMTAX analysis using HPLC derived pigments identified five major phytoplankton functional groups (PFGs) in the CGE: diatoms, dinoflagellates, cryptophytes, green algae (chlorophytes), and cyanobacteria. Among these, diatoms, cyanobacteria, and chlorophytes were the predominant groups throughout the study period. Diatoms constantly dominated the phytoplankton community in the nearshore waters as well, as indicated by the predominance of fucoxanthin, except during the SIM, when the composition temporarily shifted. The dominance of diatoms in the CGE, despite periodic increases in cyanobacteria and cryptophytes, reflected variability in nutrient availability, particularly NO<sub>3<img></sub>N and PO<sub>4</sub>-P, driven by fluctuations in river discharge and tidal influence. Conversely, the nearshore waters exhibited relatively stable hydrographic conditions, which supported a persistent, albeit lower, diatom growth with minimal temporal variability in community structure.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100684"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739212","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}

引用次数: 0

Agricultural expansion and possible effects on hydrological services: a case study of the MATOPIBA Region, Brazil 农业扩张及其对水文服务的可能影响：以巴西MATOPIBA地区为例

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-09-04 DOI: 10.1016/j.ecohyd.2025.100693

Hugo de Carvalho Ricardo , Thaís da Silva Charles , Tárcio Rocha Lopes , Fernando Campos Mendonça , Ronalton Evandro Machado , Sergio Nascimento Duarte

Despite a 70 % drop in the annual deforestation rate in the Amazon during the 21st century, the Cerrado has experienced a reduction of approximately 88 Mha (46 %) of its native vegetation, with projections that 31–34 % of the remaining biome could be deforested by 2050. The area converted from native vegetation to new arable land in the Cerrado during this century was approximately 2.5 times larger than the area converted in the Amazon, with the MATOPIBA region accounting for more than half of this new arable land. This study aimed to evaluate the effects of land use and land cover changes on the hydrological services of the MATOPIBA region and identify the most relevant factors influencing the behavior of these services. The hydrological data used in this study were obtained from the Hydrological Information System of Brazil’s National Water Agency. The images used to identify changes in land use and land cover were acquired through the MapBiomas platform. The following hydrological service indices were determined based on annual hydrological data: base flow index and water yield (water availability), direct runoff coefficient, and flashiness (protection). The results indicated changes in the annual trends of hydrological services in 16 out of the 32 studied river basins, with 62.5 % of the changes occurring in the portion of the state of Bahia. Correlations were found between changes in hydrological service indicators as a function of land use and land cover. Average pluvial precipitation and the increase in irrigation practices may also have influenced the results.

尽管21世纪亚马逊地区的年森林砍伐率下降了70%，但塞拉多地区的原生植被减少了约88亿公顷（46%），预计到2050年，剩余生物群系的31 - 34%可能会被砍伐。本世纪以来，塞拉多地区从原生植被转化为新耕地的面积大约是亚马逊地区转化面积的2.5倍，其中MATOPIBA地区占新耕地的一半以上。本研究旨在评估土地利用和土地覆盖变化对MATOPIBA地区水文服务的影响，并确定影响这些服务行为的最相关因素。本研究中使用的水文数据来自巴西国家水务局的水文信息系统。用于识别土地利用和土地覆盖变化的图像是通过MapBiomas平台获取的。根据年度水文数据确定了以下水文服务指标：基流指数和产水量（水分有效性）、直接径流系数和闪光度（保护）。结果表明，在研究的32个流域中，有16个流域的水文服务的年趋势发生了变化，其中62.5%的变化发生在巴伊亚州的部分地区。水文服务指标的变化与土地利用和土地覆盖之间存在相关性。平均降水和灌溉方式的增加也可能影响了结果。

{"title":"Agricultural expansion and possible effects on hydrological services: a case study of the MATOPIBA Region, Brazil","authors":"Hugo de Carvalho Ricardo , Thaís da Silva Charles , Tárcio Rocha Lopes , Fernando Campos Mendonça , Ronalton Evandro Machado , Sergio Nascimento Duarte","doi":"10.1016/j.ecohyd.2025.100693","DOIUrl":"10.1016/j.ecohyd.2025.100693","url":null,"abstract":"<div><div>Despite a 70 % drop in the annual deforestation rate in the Amazon during the 21st century, the Cerrado has experienced a reduction of approximately 88 Mha (46 %) of its native vegetation, with projections that 31–34 % of the remaining biome could be deforested by 2050. The area converted from native vegetation to new arable land in the Cerrado during this century was approximately 2.5 times larger than the area converted in the Amazon, with the MATOPIBA region accounting for more than half of this new arable land. This study aimed to evaluate the effects of land use and land cover changes on the hydrological services of the MATOPIBA region and identify the most relevant factors influencing the behavior of these services. The hydrological data used in this study were obtained from the Hydrological Information System of Brazil’s National Water Agency. The images used to identify changes in land use and land cover were acquired through the MapBiomas platform. The following hydrological service indices were determined based on annual hydrological data: base flow index and water yield (water availability), direct runoff coefficient, and flashiness (protection). The results indicated changes in the annual trends of hydrological services in 16 out of the 32 studied river basins, with 62.5 % of the changes occurring in the portion of the state of Bahia. Correlations were found between changes in hydrological service indicators as a function of land use and land cover. Average pluvial precipitation and the increase in irrigation practices may also have influenced the results.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100693"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738790","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}

引用次数: 0

Enhancing streamflow predictions in coastal watersheds with a multisite calibration approach in the matagorda bay watershed, texas 得克萨斯州马塔戈达湾流域多站点校准方法增强沿海流域的流量预测

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-01-30 DOI: 10.1016/j.ecohyd.2025.01.003

Nigus Demelash Melaku , Anoop Valiya Veettil , Ali Fares , Ripendra Awal

Hydrological modeling is challenging in coastal watersheds compared to inland watersheds due to the inherent complexity. Soil and Water Assessment Tool (SWAT), a physically distributed hydrological model, was employed to simulate the streamflow and water availability using a multisite calibration algorithm to effectively capture the historical and future water availability in the Matagorda Bay watershed, Texas. The ensembled Global Climate Models (GCMs) data indicates that the Matagorda Bay Watershed will be dryer towards the end of the 21^st century compared to the base period (2000 – 2021). Between 2081 and 2099, the projected mean temperature changes under Representative Concentration Pathway (RCP) 8.5 are expected to range from 3.54°C to 4.55°C. The simulation results from the multisite calibration approach evaluated using metrics such as R², NSE, PBIAS, and KGE during the calibration and validation periods, demonstrated good model performance in predicting streamflow in the Matagorda Bay watershed. Future projected streamflow indicates a decrease of 23% under RCP4.5, with a potential reduction up to 54.6% under RCP8.5. These findings suggest that the multisite calibration in the SWAT model is more effective at representing the hydrological process in complex coastal watersheds compared to the single-site calibration.

与内陆流域相比，沿海流域水文建模由于其固有的复杂性而具有挑战性。采用物理分布式水文模型SWAT (Soil and Water Assessment Tool)，利用多站点校准算法模拟了德克萨斯州Matagorda湾流域的河流流量和水可用性，从而有效地捕捉了该流域的历史和未来水可用性。综合全球气候模式（GCMs）数据表明，与基期（2000 - 2021年）相比，到21世纪末，Matagorda湾流域将更加干燥。在2081年至2099年间，代表性浓度路径（RCP） 8.5下预估的平均温度变化预计在3.54°C至4.55°C之间。在校准和验证期间，使用R²、NSE、PBIAS和KGE等指标对多站点校准方法的模拟结果进行了评估，表明模型在预测Matagorda湾流域的流量方面具有良好的性能。未来预测流量在RCP4.5下减少23%，在RCP8.5下可能减少54.6%。这些结果表明，SWAT模型中的多点定标比单点定标更能有效地表征复杂沿海流域的水文过程。

{"title":"Enhancing streamflow predictions in coastal watersheds with a multisite calibration approach in the matagorda bay watershed, texas","authors":"Nigus Demelash Melaku , Anoop Valiya Veettil , Ali Fares , Ripendra Awal","doi":"10.1016/j.ecohyd.2025.01.003","DOIUrl":"10.1016/j.ecohyd.2025.01.003","url":null,"abstract":"<div><div>Hydrological modeling is challenging in coastal watersheds compared to inland watersheds due to the inherent complexity. Soil and Water Assessment Tool (SWAT), a physically distributed hydrological model, was employed to simulate the streamflow and water availability using a multisite calibration algorithm to effectively capture the historical and future water availability in the Matagorda Bay watershed, Texas. The ensembled Global Climate Models (GCMs) data indicates that the Matagorda Bay Watershed will be dryer towards the end of the 21<sup>st</sup> century compared to the base period (2000 – 2021). Between 2081 and 2099, the projected mean temperature changes under Representative Concentration Pathway (RCP) 8.5 are expected to range from 3.54°C to 4.55°C. The simulation results from the multisite calibration approach evaluated using metrics such as R², NSE, PBIAS, and KGE during the calibration and validation periods, demonstrated good model performance in predicting streamflow in the Matagorda Bay watershed. Future projected streamflow indicates a decrease of 23% under RCP4.5, with a potential reduction up to 54.6% under RCP8.5. These findings suggest that the multisite calibration in the SWAT model is more effective at representing the hydrological process in complex coastal watersheds compared to the single-site calibration.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100643"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145739012","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}

引用次数: 0

The impact of small water reservoirs on the concentration of pollutants in a stream in an urbanised area 小型水库对城市化地区溪流中污染物浓度的影响

IF 2.2 4区环境科学与生态学 Q2 ECOLOGY

Ecohydrology & Hydrobiology

Pub Date : 2025-12-01 Epub Date: 2025-07-19 DOI: 10.1016/j.ecohyd.2025.100678

Roman Cieśliński , Marlena Pawłowska , Bartosz Jagielski , Katarzyna Kubiak-Wójcicka , Agnieszka Pilarska

Water reservoirs and small streams located in urban areas are subject to strong pressure as a result of human activity. This study focuses on an urban stream located in the city of Gdansk (Poland). Field studies were conducted monthly within 7 measurement profiles located on the tributaries and outflows of water reservoirs located on the route of the Orunski Stream. They included measurements of water flow rate and collection of water samples for physicochemical analyses. The results showed that the pollutant loads in the individual measurement profiles were seasonally variable. The highest concentrations of total nitrogen, total phosphorus, chlorides and specific conductivity values were recorded in the tributary of the Orunski Stream, i.e. the Kozacki Stream. A decrease in monthly nitrogen and phosphorus loads was recorded in the profiles along the Orunski Stream downstream, below the water reservoirs, due to the loads accumulating in three reservoirs. Three components influencing water quality were identified: the location of the landfill, the Tri-City bypass, and the runoff of pollutants from agricultural and urban areas. The results obtained are important for the stream manager and the needs of future revitalization of water reservoirs.

位于城市地区的水库和小溪受到人类活动的巨大压力。本研究的重点是位于格但斯克市（波兰）的一条城市河流。实地研究每月在位于奥伦斯基溪路线上的支流和水库流出处的7个测量剖面内进行。它们包括测量水流速率和收集水样进行物理化学分析。结果表明，各测量剖面的污染物负荷呈季节性变化。总氮、总磷、氯化物浓度和比电导率均以Orunski河支流Kozacki河最高。在奥伦斯基河下游水库下方的剖面中，由于三个水库的负荷积累，氮和磷的月负荷有所减少。确定了影响水质的三个因素：垃圾填埋场的位置、三城绕道以及农业和城市地区污染物的径流。所得结果对河流管理者和未来水库振兴的需要具有重要意义。

{"title":"The impact of small water reservoirs on the concentration of pollutants in a stream in an urbanised area","authors":"Roman Cieśliński , Marlena Pawłowska , Bartosz Jagielski , Katarzyna Kubiak-Wójcicka , Agnieszka Pilarska","doi":"10.1016/j.ecohyd.2025.100678","DOIUrl":"10.1016/j.ecohyd.2025.100678","url":null,"abstract":"<div><div>Water reservoirs and small streams located in urban areas are subject to strong pressure as a result of human activity. This study focuses on an urban stream located in the city of Gdansk (Poland). Field studies were conducted monthly within 7 measurement profiles located on the tributaries and outflows of water reservoirs located on the route of the Orunski Stream. They included measurements of water flow rate and collection of water samples for physicochemical analyses. The results showed that the pollutant loads in the individual measurement profiles were seasonally variable. The highest concentrations of total nitrogen, total phosphorus, chlorides and specific conductivity values were recorded in the tributary of the Orunski Stream, i.e. the Kozacki Stream. A decrease in monthly nitrogen and phosphorus loads was recorded in the profiles along the Orunski Stream downstream, below the water reservoirs, due to the loads accumulating in three reservoirs. Three components influencing water quality were identified: the location of the landfill, the Tri-City bypass, and the runoff of pollutants from agricultural and urban areas. The results obtained are important for the stream manager and the needs of future revitalization of water reservoirs.</div></div>","PeriodicalId":56070,"journal":{"name":"Ecohydrology & Hydrobiology","volume":"25 4","pages":"Article 100678"},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145738788","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}

引用次数: 0