Watershed Ecology and the Environment最新文献

Simulation of wetland vegetation succession based on coupled Gaussian and population dynamics models: A case study of Poyang Lake wetlands 基于高斯和种群动力学耦合模型的湿地植被演替模拟：鄱阳湖湿地案例研究

Watershed Ecology and the Environment

Pub Date : 2024-11-20 DOI: 10.1016/j.wsee.2024.11.001

Long Sun , Zhen Han , Shiyan Wang , Jie Wang , Xiaobo Liu , Jialin Wang

Wetland vegetation is the most crucial primary producer in wetland ecosystems and serves as an indicator of ecosystem health. After 2003, significant changes occurred in the “river-lake relationship” between Poyang Lake and the Yangtze River, with intensified dry conditions in autumn and winter leading to a shortened inundation period for sandbanks and significant changes in the community structure and spatial distribution of wetland vegetation. By coupling a Gaussian model with a population dynamics model, this study simulated the response of wetland vegetation to inundation duration under different hydrological year types, revealing the relationship between vegetation distribution and inundation duration. Key parameters, such as growth and mortality rates, were identified, and the vegetation succession and spatial distribution of Poyang Lake wetlands were simulated for five representative years: a wet year (2010), a normal year (2001), a dry year (2006), an extreme wet year (1998), and an extreme dry year (2022). The results showed that the response of wetland vegetation to inundation duration followed a Gaussian curve, with each species exhibiting an optimal range of inundation durations. Mortality rates increased when the duration fell outside this range. In 2010, the total area of wetland vegetation was similar to that in a normal year, but the proportions of different plant species varied significantly. Compared to 2001, the areas of Phalaris arundinacea and Polygonum criopolitanum increased by 50.92 % and 24.86 %, respectively, while the areas of Phragmites australis and Triarrhena lutarioriparia decreased by 71.66 % and 83.49 %. In 1998, the total vegetation area shrank considerably, with a 54.74 % reduction compared to 2001 and a 64.32 % reduction compared to 2006. In contrast, the total wetland vegetation area reached its maximum in the extreme dry year of 2022, increasing by 41.35 % compared to 2001. Among dominant species, Carex spp., Cynodon dactylon, and Phragmites australis expanded significantly in dry years, while Phalaris arundinacea and Polygonum criopolitanum were better adapted to flood conditions.

湿地植被是湿地生态系统中最重要的初级生产者，也是生态系统健康的指标。2003 年以后，鄱阳湖与长江的 "江湖关系 "发生了重大变化，秋冬季干旱加剧，沙洲淹没期缩短，湿地植被的群落结构和空间分布发生了显著变化。本研究将高斯模型与种群动力学模型相结合，模拟了不同水文年型下湿地植被对淹没持续时间的响应，揭示了植被分布与淹没持续时间之间的关系。研究确定了湿地植被的生长率和死亡率等关键参数，并模拟了鄱阳湖湿地在湿润年（2010 年）、正常年（2001 年）、干旱年（2006 年）、极端湿润年（1998 年）和极端干旱年（2022 年）五个代表性年份的植被演替和空间分布。结果表明，湿地植被对淹没持续时间的反应遵循高斯曲线，每个物种都有一个最佳的淹没持续时间范围。当持续时间超出这一范围时，死亡率就会增加。2010 年，湿地植被的总面积与正常年份相近，但不同植物物种的比例差异很大。与 2001 年相比，箭毒草（Phalaris arundinacea）和蓼（Polygonum criopolitanum）的面积分别增加了 50.92 % 和 24.86 %，而糙叶苇草（Phragmites australis）和箭毒草（Triarrhena lutarioriparia）的面积则分别减少了 71.66 % 和 83.49 %。1998 年，植被总面积大幅缩减，与 2001 年相比减少了 54.74%，与 2006 年相比减少了 64.32%。相比之下，湿地植被总面积在极端干旱的 2022 年达到最大值，与 2001 年相比增加了 41.35%。在优势物种中，Carex spp.、Cynodon dactylon 和 Phragmites australis 在干旱年份显著增加，而 Phalaris arundinacea 和 Polygonum criopolitanum 则更适应洪水条件。

{"title":"Simulation of wetland vegetation succession based on coupled Gaussian and population dynamics models: A case study of Poyang Lake wetlands","authors":"Long Sun , Zhen Han , Shiyan Wang , Jie Wang , Xiaobo Liu , Jialin Wang","doi":"10.1016/j.wsee.2024.11.001","DOIUrl":"10.1016/j.wsee.2024.11.001","url":null,"abstract":"<div><div>Wetland vegetation is the most crucial primary producer in wetland ecosystems and serves as an indicator of ecosystem health. After 2003, significant changes occurred in the “river-lake relationship” between Poyang Lake and the Yangtze River, with intensified dry conditions in autumn and winter leading to a shortened inundation period for sandbanks and significant changes in the community structure and spatial distribution of wetland vegetation. By coupling a Gaussian model with a population dynamics model, this study simulated the response of wetland vegetation to inundation duration under different hydrological year types, revealing the relationship between vegetation distribution and inundation duration. Key parameters, such as growth and mortality rates, were identified, and the vegetation succession and spatial distribution of Poyang Lake wetlands were simulated for five representative years: a wet year (2010), a normal year (2001), a dry year (2006), an extreme wet year (1998), and an extreme dry year (2022). The results showed that the response of wetland vegetation to inundation duration followed a Gaussian curve, with each species exhibiting an optimal range of inundation durations. Mortality rates increased when the duration fell outside this range. In 2010, the total area of wetland vegetation was similar to that in a normal year, but the proportions of different plant species varied significantly. Compared to 2001, the areas of <em>Phalaris arundinacea</em> and <em>Polygonum criopolitanum</em> increased by 50.92 % and 24.86 %, respectively, while the areas of <em>Phragmites australis</em> and <em>Triarrhena lutarioriparia</em> decreased by 71.66 % and 83.49 %. In 1998, the total vegetation area shrank considerably, with a 54.74 % reduction compared to 2001 and a 64.32 % reduction compared to 2006. In contrast, the total wetland vegetation area reached its maximum in the extreme dry year of 2022, increasing by 41.35 % compared to 2001. Among dominant species, <em>Carex</em> spp., <em>Cynodon dactylon</em>, and <em>Phragmites australis</em> expanded significantly in dry years, while <em>Phalaris arundinacea</em> and <em>Polygonum criopolitanum</em> were better adapted to flood conditions.</div></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"7 ","pages":"Pages 1-10"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

From data to decisions: Leveraging ML for improved river discharge forecasting in Bangladesh 从数据到决策：利用 ML 改进孟加拉国的河流泄量预报

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.09.004

Md. Abu Saleh, H.M. Rasel, Briti Ray

River discharge forecasting stands at the forefront of environmental management, contributing significantly to sustainable development through its impact on flood prevention, water resource management, ecological conservation, and energy production. This study forecasted the annual river discharge forecasting in the Nilphamari district of Bangladesh, employing random forest (RF), support vector machine (SVM), and gradient boosting machine (GBM) techniques. Historical river discharge data spanning from 1990 to 2020, obtained from eight surface water stations, forms the basis of the analysis. The forecast was performed from 2021 to 2030. 11 statistical parameters were considered for performance evaluation. Additionally, four evaluation plots, comprising a quantile–quantile plot (QQ plot), a residual plot, a Bland Altman plot, and Theil’s U statistic, were employed for a detailed understanding of model accuracy. Results demonstrate that the random forest regression technique exhibited superior accuracy compared to SVM and GBM in training and testing stages. Notably, the coefficient of determination reached 97 % during the testing phase, emphasizing the robustness of this model. While Mean Absolute Error is lower (1085.071 cubic meter per second), in training, the model captures relative changes (Mean Absolute Percentage Error = 0.154) better during prediction. Willmott’s Index in training (0.77) and testing (0.55) suggest the model memorizes training data well and outperforms the other models in testing stage. The findings underscore the efficacy of RF regression as a superior alternative for short-term discharge forecasting, offering valuable insights for integrated water resources management, particularly in flood warning systems and the expansion of irrigation initiatives.

河流排水量预报处于环境管理的最前沿，通过其对防洪、水资源管理、生态保护和能源生产的影响，为可持续发展做出了重大贡献。本研究采用随机森林（RF）、支持向量机（SVM）和梯度提升机（GBM）技术，对孟加拉国 Nilphamari 地区的年度河流排水量进行了预测。从八个地表水站获得的 1990 年至 2020 年的历史河流排水量数据是分析的基础。预测时间为 2021 年至 2030 年。性能评估考虑了 11 个统计参数。此外，为了详细了解模型的准确性，还采用了四种评价图，包括量化-量化图（QQ 图）、残差图、Bland Altman 图和 Theil's U 统计量。结果表明，在训练和测试阶段，随机森林回归技术的准确性优于 SVM 和 GBM。值得注意的是，在测试阶段，确定系数达到了 97%，强调了该模型的稳健性。虽然平均绝对误差较低（1085.071 立方米/秒），但在训练阶段，该模型能更好地捕捉到预测过程中的相对变化（平均绝对百分比误差 = 0.154）。训练中的威尔莫特指数（0.77）和测试中的威尔莫特指数（0.55）表明，该模型能很好地记忆训练数据，并在测试阶段优于其他模型。研究结果表明，射频回归是短期排泄量预测的一种有效替代方法，为水资源综合管理，特别是洪水预警系统和扩大灌溉范围提供了有价值的见解。

{"title":"From data to decisions: Leveraging ML for improved river discharge forecasting in Bangladesh","authors":"Md. Abu Saleh, H.M. Rasel, Briti Ray","doi":"10.1016/j.wsee.2024.09.004","DOIUrl":"10.1016/j.wsee.2024.09.004","url":null,"abstract":"<div><div>River discharge forecasting stands at the forefront of environmental management, contributing significantly to sustainable development through its impact on flood prevention, water resource management, ecological conservation, and energy production. This study forecasted the annual river discharge forecasting in the Nilphamari district of Bangladesh, employing random forest (RF), support vector machine (SVM), and gradient boosting machine (GBM) techniques. Historical river discharge data spanning from 1990 to 2020, obtained from eight surface water stations, forms the basis of the analysis. The forecast was performed from 2021 to 2030. 11 statistical parameters were considered for performance evaluation. Additionally, four evaluation plots, comprising a quantile–quantile plot (QQ plot), a residual plot, a Bland Altman plot, and Theil’s U statistic, were employed for a detailed understanding of model accuracy. Results demonstrate that the random forest regression technique exhibited superior accuracy compared to SVM and GBM in training and testing stages. Notably, the coefficient of determination reached 97 % during the testing phase, emphasizing the robustness of this model. While Mean Absolute Error is lower (1085.071 cubic meter per second), in training, the model captures relative changes (Mean Absolute Percentage Error = 0.154) better during prediction. Willmott’s Index in training (0.77) and testing (0.55) suggest the model memorizes training data well and outperforms the other models in testing stage. The findings underscore the efficacy of RF regression as a superior alternative for short-term discharge forecasting, offering valuable insights for integrated water resources management, particularly in flood warning systems and the expansion of irrigation initiatives.</div></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 209-226"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142426881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparing the performance variability of different eDNA primers in fish monitoring 比较不同 eDNA 引物在鱼类监测中的性能差异

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.08.003

Yan Xu , Xumeng Huo , Xinyue Chen , Zeyang Wang , Mingliang Zhou , Jie Zhu , Rui Yan , Yanpeng Cai

Environmental DNA technology develops rapidly in the field of biodiversity detection. Selecting appropriate primers may be one of the key questions. However, there is currently a lack of systematic studies on differences in primer detection efficiencies. This research investigates the efficiency of six universal primers (12S, 16S, 18S, MiFish, Cytb, and COI) in detecting fish species across diverse aquatic ecosystems using an environmental DNA approach. The research spans five study areas, representing marine, river, wetland, lake, and reservoir ecosystems. Illumina MiSeq sequencing and bioinformatics tools were employed for primer performance evaluation. Results indicate that MiFish consistently outperforms other primers, detecting the highest number of fish species across all ecosystems and exhibiting superior taxonomic coverage. Furthermore, marine ecosystems consistently show higher detection numbers across all primers. The absence of commonly identified species detected by all primers emphasizes the necessity of using multiple primers for a comprehensive assessment. This study provides valuable insights into the strengths and limitations of universal primers, highlighting the importance of primer selection for accurate eDNA-based fish monitoring. The findings contribute to the scientific basis for the comprehensive management of aquatic ecosystems, assisting researchers and ecosystem managers in screening suitable fish universal primers for eDNA methods. The study also calls for further research into factors influencing primer performance and encourages the refinement of primers to enhance biodiversity monitoring precision in various ecosystems.

环境 DNA 技术在生物多样性检测领域发展迅速。选择合适的引物可能是关键问题之一。然而，目前缺乏对引物检测效率差异的系统研究。本研究采用环境 DNA 方法，调查了六种通用引物（12S、16S、18S、MiFish、Cytb 和 COI）在不同水生生态系统中检测鱼类物种的效率。该研究横跨五个研究区域，分别代表海洋、河流、湿地、湖泊和水库生态系统。采用 Illumina MiSeq 测序和生物信息学工具进行引物性能评估。结果表明，MiFish 的性能始终优于其他引物，在所有生态系统中检测到的鱼类物种数量最多，分类覆盖率也更高。此外，海洋生态系统在所有引物中都显示出较高的检测数量。所有引物都没有检测到共同识别的物种，这强调了使用多种引物进行综合评估的必要性。这项研究对通用引物的优势和局限性提供了宝贵的见解，强调了选择引物对基于 eDNA 的鱼类精确监测的重要性。研究结果为水生生态系统的综合管理提供了科学依据，有助于研究人员和生态系统管理人员为 eDNA 方法筛选合适的鱼类通用引物。该研究还呼吁进一步研究影响引物性能的因素，并鼓励改进引物，以提高各种生态系统中生物多样性监测的精确度。

{"title":"Comparing the performance variability of different eDNA primers in fish monitoring","authors":"Yan Xu , Xumeng Huo , Xinyue Chen , Zeyang Wang , Mingliang Zhou , Jie Zhu , Rui Yan , Yanpeng Cai","doi":"10.1016/j.wsee.2024.08.003","DOIUrl":"10.1016/j.wsee.2024.08.003","url":null,"abstract":"<div><p>Environmental DNA technology develops rapidly in the field of biodiversity detection. Selecting appropriate primers may be one of the key questions. However, there is currently a lack of systematic studies on differences in primer detection efficiencies. This research investigates the efficiency of six universal primers (12S, 16S, 18S, MiFish, Cytb, and COI) in detecting fish species across diverse aquatic ecosystems using an environmental DNA approach. The research spans five study areas, representing marine, river, wetland, lake, and reservoir ecosystems. Illumina MiSeq sequencing and bioinformatics tools were employed for primer performance evaluation. Results indicate that MiFish consistently outperforms other primers, detecting the highest number of fish species across all ecosystems and exhibiting superior taxonomic coverage. Furthermore, marine ecosystems consistently show higher detection numbers across all primers. The absence of commonly identified species detected by all primers emphasizes the necessity of using multiple primers for a comprehensive assessment. This study provides valuable insights into the strengths and limitations of universal primers, highlighting the importance of primer selection for accurate eDNA-based fish monitoring. The findings contribute to the scientific basis for the comprehensive management of aquatic ecosystems, assisting researchers and ecosystem managers in screening suitable fish universal primers for eDNA methods. The study also calls for further research into factors influencing primer performance and encourages the refinement of primers to enhance biodiversity monitoring precision in various ecosystems.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 165-175"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589471424000135/pdfft?md5=a8fbb323cf57517c6d1b8d4998599e24&pid=1-s2.0-S2589471424000135-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Human security and mobility in the context of climate change in Africa 非洲气候变化背景下的人类安全与流动性

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.10.004

Daniel Chigudu

Due to climate change, the decline in the African continent’s rich ecological biodiversity threatens increased food insecurity, mobility, millions of livelihoods, land conflicts, and zoonotic disease transmission that could lead to more pandemics. This climate change comes with human security and political and economic concerns. As it stands, attempts to stop all greenhouse gas emissions cannot relieve the pain inflicted by climate change. Accordingly, there is a need to direct attention to the inescapable consequences of climate change. The estimate that by 2050, about 200 million climate migrants will have been forcibly displaced worldwide, of which 86 million will be in Africa, is a cause for concern. By disconnecting security and migration, academics and peace and security practitioners must reframe their understanding of migration as a human security threat. Based on a systematic literature review, this study explores human security and mobility in Africa’s climate change context. It is argued that challenges from climate change, human activities and population pressure on land impacting land degradation are critical factors in increasing the risk of mobility and human security in Africa. These risks require anticipatory steps to overcome them. Hence, this study contributes to the risk assessment of mobility and human security by highlighting some indicators and distinguishing the incremental impacts of climate change while investigating opportunities to design adaptation actions for sustaining security and mobility. The study suggests that the human security approach should be integrated into the migration and climate migration policy frameworks, including efforts to promote a people-centred and more holistic approach to address human security. Even if climate migration presents a security issue, it does not necessarily threaten national security alone but human security. Options considering the complex and multifaceted nature of challenges to peoples’ well-being because of climate change and its related disasters across Africa are explored.

由于气候变化，非洲大陆丰富的生态生物多样性减少，粮食不安全、流动性、数百万人的生计、土地冲突以及可能导致更多流行病的人畜共患疾病传播等问题都有可能加剧。气候变化伴随着人类安全以及政治和经济问题。就目前情况而言，试图停止所有温室气体排放并不能减轻气候变化带来的痛苦。因此，有必要引导人们关注气候变化不可避免的后果。据估计，到 2050 年，全世界将有约 2 亿气候移民被迫流离失所，其中 8600 万将在非洲，这令人担忧。由于将安全与移民割裂开来，学术界以及和平与安全工作者必须重新理解移民对人类安全的威胁。本研究以系统的文献综述为基础，探讨了非洲气候变化背景下的人类安全与流动问题。研究认为，气候变化、人类活动和人口对土地的压力造成土地退化，这些挑战是增加非洲人口流动风险和人类安全的关键因素。这些风险需要采取预见性措施加以克服。因此，本研究通过强调一些指标和区分气候变化的递增影响，同时调查设计适应行动以维持安全和流动性的机会，为流动性和人类安全的风险评估做出了贡献。研究建议，应将人类安全方法纳入移民和气候移民政策框架，包括努力推广以人为本、更加全面的方法来解决人类安全问题。即使气候移民是一个安全问题，它也不一定只威胁国家安全，也会威胁人类安全。考虑到气候变化及其相关灾害对非洲各地人民福祉的挑战具有复杂性和多面性，探讨了各种备选方案。

{"title":"Human security and mobility in the context of climate change in Africa","authors":"Daniel Chigudu","doi":"10.1016/j.wsee.2024.10.004","DOIUrl":"10.1016/j.wsee.2024.10.004","url":null,"abstract":"<div><div>Due to climate change, the decline in the African continent’s rich ecological biodiversity threatens increased food insecurity, mobility, millions of livelihoods, land conflicts, and zoonotic disease transmission that could lead to more pandemics. This climate change comes with human security and political and economic concerns. As it stands, attempts to stop all greenhouse gas emissions cannot relieve the pain inflicted by climate change. Accordingly, there is a need to direct attention to the inescapable consequences of climate change. The estimate that by 2050, about 200 million climate migrants will have been forcibly displaced worldwide, of which 86 million will be in Africa, is a cause for concern. By disconnecting security and migration, academics and peace and security practitioners must reframe their understanding of migration as a human security threat. Based on a systematic literature review, this study explores human security and mobility in Africa’s climate change context. It is argued that challenges from climate change, human activities and population pressure on land impacting land degradation are critical factors in increasing the risk of mobility and human security in Africa. These risks require anticipatory steps to overcome them. Hence, this study contributes to the risk assessment of mobility and human security by highlighting some indicators and distinguishing the incremental impacts of climate change while investigating opportunities to design adaptation actions for sustaining security and mobility. The study suggests that the human security approach should be integrated into the migration and climate migration policy frameworks, including efforts to promote a people-centred and more holistic approach to address human security. Even if climate migration presents a security issue, it does not necessarily threaten national security alone but human security. Options considering the complex and multifaceted nature of challenges to peoples’ well-being because of climate change and its related disasters across Africa are explored.</div></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 242-251"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142553948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Source, fate, toxicity, and remediation of micro-plastic in wetlands: A critical review 湿地中微塑料的来源、归宿、毒性和补救：重要综述

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.02.001

Naveen Chand , Surindra Suthar

Microplastics (MPs) are recognized as emerging contaminants due to their small size, hazardous nature, and widespread abundance in the environmental compartments. As the largest sink of MPs, oceans are currently the main focus. However, the question about MP particles applies to all environmental niches, including natural wetlands. Unfortunately, natural wetlands have been not explored much in comparison to the ocean and the terrestrial ecosystem for MP occurrence and its toxicity. Meanwhile, these natural wetlands offer important ecological services and have a high biodiversity, both of which could be compromised by the rising levels of MP contamination in such systems. However, due to limited research in natural wetlands possible ecological repercussions are still lacking. Even there are uncertainties about MPs in the wetlands regarding their distribution and fate. Since these wetlands have the potential to trap plastics and could act as a sink for MPs, it becomes essential to investigate the natural wetland for MP contamination and its possible toxicological risks in wetlands. This review summarised the source, potential sink and toxicological consequences of MPs in natural wetlands. The review also illustrated the advancements in the technologies aiming to remove plastic debris from the natural environment.

微塑料（MPs）因其体积小、危害性大以及在环境区划中广泛存在而被视为新兴污染物。作为 MPs 的最大汇，海洋目前是研究的重点。然而，有关 MP 粒子的问题适用于所有环境壁龛，包括天然湿地。遗憾的是，与海洋和陆地生态系统相比，人们对天然湿地的 MP 出现及其毒性的研究还不多。与此同时，这些天然湿地提供了重要的生态服务，并具有高度的生物多样性，而这两者都可能因此类系统中 MP 污染水平的上升而受到损害。然而，由于对天然湿地的研究有限，因此仍然缺乏对可能产生的生态影响的研究。甚至连湿地中 MP 的分布和归宿也存在不确定性。由于这些湿地具有捕集塑料的潜力，并可能成为多溴联苯醚的汇集地，因此调查天然湿地的多溴联苯醚污染及其在湿地中可能存在的毒理学风险就变得非常重要。本综述总结了多溴联苯醚在自然湿地中的来源、潜在汇及其毒理学后果。综述还说明了旨在从自然环境中清除塑料碎片的技术的进步。

{"title":"Source, fate, toxicity, and remediation of micro-plastic in wetlands: A critical review","authors":"Naveen Chand , Surindra Suthar","doi":"10.1016/j.wsee.2024.02.001","DOIUrl":"https://doi.org/10.1016/j.wsee.2024.02.001","url":null,"abstract":"<div><p>Microplastics (MPs) are recognized as emerging contaminants due to their small size, hazardous nature, and widespread abundance in the environmental compartments. As the largest sink of MPs, oceans are currently the main focus. However, the question about MP particles applies to all environmental niches, including natural wetlands. Unfortunately, natural wetlands have been not explored much in comparison to the ocean and the terrestrial ecosystem for MP occurrence and its toxicity. Meanwhile, these natural wetlands offer important ecological services and have a high biodiversity, both of which could be compromised by the rising levels of MP contamination in such systems. However, due to limited research in natural wetlands possible ecological repercussions are still lacking. Even there are uncertainties about MPs in the wetlands regarding their distribution and fate. Since these wetlands have the potential to trap plastics and could act as a sink for MPs, it becomes essential to investigate the natural wetland for MP contamination and its possible toxicological risks in wetlands. This review summarised the source, potential sink and toxicological consequences of MPs in natural wetlands. The review also illustrated the advancements in the technologies aiming to remove plastic debris from the natural environment.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 41-53"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589471424000019/pdfft?md5=a00993a0509151314b01c1979a67d5a7&pid=1-s2.0-S2589471424000019-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140051524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Asymmetric impacts of natural and anthropogenic factors on wetland landscape evolution in Fenhe River Basin, China 自然和人为因素对中国汾河流域湿地景观演变的非对称影响

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.09.001

Chengjie Xie , Yingzheng Zeng , Xiaoyang Hao , Zhonghua Ning , Tian Xie

In recent years, Fenhe River Basin (FRB) wetlands have been facing severe challenges due to climate change and human activities. It was of great significance to understand the dynamic changes of FRB wetlands and their driving factors for ecological protection. Based on the land use data, runoff, rainfall and GDP data of FRB from 1980 to 2020, the evolution characteristics and driving factors of wetland pattern in FRB were analyzed. The results showed that the wetland types in FRB mainly included paddy, reservoir, river, beach and marsh. Among them, natural wetlands accounted for 72.46 %, and constructed wetlands accounted for 27.53 %. The main types of wetlands in FRB were river, reservoirs and beach, which account for 92.26 % of the whole wetland area. However, the dominant position of reservoir patch was more obvious than the others during 1980–2020. Landscape index showed that the shape of landscape tended to be regular and became more fragmentation. The transfer between wetlands and other land use types mainly occurred in the northern and southern parts of the FRB, and the main conversion types were occurred between dry land and wetlands, grassland and wetlands. Both natural and human factors drove the evolution pattern of wetlands, but the emphases were different. Runoff had a significant effect on wetland pattern at landscape level, while rainfall had a more significant effect on wetland evolution at class level. Urbanization rate and GDP had important effects on the evolution of wetland pattern at both class and landscape levels.

近年来，由于气候变化和人类活动的影响，汾河流域湿地面临着严峻的挑战。了解汾河流域湿地的动态变化及其驱动因素对生态保护具有重要意义。基于 1980-2020 年 FRB 的土地利用数据、径流、降雨和 GDP 数据，分析了 FRB 湿地格局的演变特征和驱动因素。结果表明，中国北京地区的湿地类型主要包括水田、水库、河流、滩涂和沼泽。其中，自然湿地占 72.46%，人工湿地占 27.53%。FRB 的主要湿地类型为河流、水库和滩涂，占整个湿地面积的 92.26%。但 1980-2020 年间，水库斑块的优势地位更为明显。景观指数显示，景观形状趋于规则化和破碎化。湿地与其他土地利用类型之间的转换主要发生在 FRB 的北部和南部，主要转换类型为旱地与湿地、草地与湿地之间的转换。自然和人为因素都推动了湿地的演变模式，但两者的侧重点有所不同。在景观层面，径流对湿地格局有显著影响，而在等级层面，降雨对湿地演变的影响更为显著。城市化率和 GDP 对湿地格局在等级和景观层面的演变都有重要影响。

{"title":"Asymmetric impacts of natural and anthropogenic factors on wetland landscape evolution in Fenhe River Basin, China","authors":"Chengjie Xie , Yingzheng Zeng , Xiaoyang Hao , Zhonghua Ning , Tian Xie","doi":"10.1016/j.wsee.2024.09.001","DOIUrl":"10.1016/j.wsee.2024.09.001","url":null,"abstract":"<div><p>In recent years, Fenhe River Basin (FRB) wetlands have been facing severe challenges due to climate change and human activities. It was of great significance to understand the dynamic changes of FRB wetlands and their driving factors for ecological protection. Based on the land use data, runoff, rainfall and GDP data of FRB from 1980 to 2020, the evolution characteristics and driving factors of wetland pattern in FRB were analyzed. The results showed that the wetland types in FRB mainly included paddy, reservoir, river, beach and marsh. Among them, natural wetlands accounted for 72.46 %, and constructed wetlands accounted for 27.53 %. The main types of wetlands in FRB were river, reservoirs and beach, which account for 92.26 % of the whole wetland area. However, the dominant position of reservoir patch was more obvious than the others during 1980–2020. Landscape index showed that the shape of landscape tended to be regular and became more fragmentation. The transfer between wetlands and other land use types mainly occurred in the northern and southern parts of the FRB, and the main conversion types were occurred between dry land and wetlands, grassland and wetlands. Both natural and human factors drove the evolution pattern of wetlands, but the emphases were different. Runoff had a significant effect on wetland pattern at landscape level, while rainfall had a more significant effect on wetland evolution at class level. Urbanization rate and GDP had important effects on the evolution of wetland pattern at both class and landscape levels.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 176-186"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589471424000147/pdfft?md5=21688c8eeb2f9127fa7dae6b5c6b22c1&pid=1-s2.0-S2589471424000147-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142148576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Poisoned for gold: Assessing the spatial extent of heavy metal contamination within the Tutua-Bura-Angoben Shelter Belt Forest Reserve in Ghana 为黄金而中毒：评估加纳 Tutua-Bura-Angoben 庇护带森林保护区内重金属污染的空间范围

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.08.001

Jeff Dacosta Osei , Emmanuel Arhin , Yaw A. Twumasi , Lily Lisa Yevugah , Louvis Boakye , Peter Damoah-Afari , Doris Saah , Priscilla Badaweh Coffie

The Tutua-Bura-Angoben Shelter Belt project in Ghana, aimed at combating desertification and land degradation, faces an unexpected threat from heavy metal contamination. This study investigates the levels and spatial distribution of arsenic (As), lead (Pb), copper (Cu), and zinc (Zn) within the forest reserve, focusing on the implications for environmental health and sustainable development goals (SDGs). Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS), 195 soil samples from the forest reserve were analyzed for heavy metal concentrations. The results reveal significant contamination, with arsenic levels ranging from 3.19 to 138.63 ppm, and an alarming 26 % of the reserve exceeding the 20 ppm threshold for arsenic. Copper, lead, and zinc showed lower contamination levels, with mean concentrations of 13.83 ppm, 7.63 ppm, and 27.53 ppm, respectively. Spatial interpolation using kriging in ArcGIS highlighted localized hotspots of arsenic contamination, primarily influenced by nearby Artisanal Small-Scale Gold Mining (ASGM) activities. The study underscores the urgent need for targeted environmental management strategies, including stricter waste management protocols, sustainable mining practices, and community engagement to mitigate the contamination risks and preserve the ecological integrity of the Tutua-Bura-Angoben Shelter Belt.

加纳 Tutua-Bura-Angoben 防护林带项目旨在防治荒漠化和土地退化，但却面临着重金属污染的意外威胁。本研究调查了森林保护区内砷（As）、铅（Pb）、铜（Cu）和锌（Zn）的含量和空间分布，重点关注对环境健康和可持续发展目标（SDGs）的影响。利用电感耦合等离子体质谱仪 (ICP-MS)，对森林保护区的 195 个土壤样本进行了重金属浓度分析。结果显示污染严重，砷含量从 3.19 ppm 到 138.63 ppm 不等，令人震惊的是，26% 的保护区土壤砷含量超过了 20 ppm 的阈值。铜、铅和锌的污染水平较低，平均浓度分别为 13.83 ppm、7.63 ppm 和 27.53 ppm。利用 ArcGIS 中的克里格法进行空间插值，突出显示了砷污染的局部热点，主要受附近手工小规模采金业（ASGM）活动的影响。这项研究强调，迫切需要制定有针对性的环境管理战略，包括更严格的废物管理规程、可持续采矿实践和社区参与，以减轻污染风险，保护图图阿-布拉-安戈本防护林带的生态完整性。

{"title":"Poisoned for gold: Assessing the spatial extent of heavy metal contamination within the Tutua-Bura-Angoben Shelter Belt Forest Reserve in Ghana","authors":"Jeff Dacosta Osei , Emmanuel Arhin , Yaw A. Twumasi , Lily Lisa Yevugah , Louvis Boakye , Peter Damoah-Afari , Doris Saah , Priscilla Badaweh Coffie","doi":"10.1016/j.wsee.2024.08.001","DOIUrl":"10.1016/j.wsee.2024.08.001","url":null,"abstract":"<div><p>The Tutua-Bura-Angoben Shelter Belt project in Ghana, aimed at combating desertification and land degradation, faces an unexpected threat from heavy metal contamination. This study investigates the levels and spatial distribution of arsenic (As), lead (Pb), copper (Cu), and zinc (Zn) within the forest reserve, focusing on the implications for environmental health and sustainable development goals (SDGs). Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS), 195 soil samples from the forest reserve were analyzed for heavy metal concentrations. The results reveal significant contamination, with arsenic levels ranging from 3.19 to 138.63 ppm, and an alarming 26 % of the reserve exceeding the 20 ppm threshold for arsenic. Copper, lead, and zinc showed lower contamination levels, with mean concentrations of 13.83 ppm, 7.63 ppm, and 27.53 ppm, respectively. Spatial interpolation using kriging in ArcGIS highlighted localized hotspots of arsenic contamination, primarily influenced by nearby Artisanal Small-Scale Gold Mining (ASGM) activities. The study underscores the urgent need for targeted environmental management strategies, including stricter waste management protocols, sustainable mining practices, and community engagement to mitigate the contamination risks and preserve the ecological integrity of the Tutua-Bura-Angoben Shelter Belt.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 146-154"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589471424000111/pdfft?md5=782b47549ba131ee2acb01eb6f86cc21&pid=1-s2.0-S2589471424000111-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142088790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the diets of Eurasian Curlew and Bar-tailed Godwit through droppings analysis on the west coast of India 通过粪便分析揭示印度西海岸欧亚杓鹬和条尾杓鹬的食谱

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.09.002

T.R. Athira , K.A. Rubeena , K. Jishnu , C.T. Shifa , Omer R. Reshi , A.P. Rashiba , T. Jobiraj , P. Thejass

This study examines the population dynamics and dietary patterns of the near-threatened Eurasian Curlew and Bar-tailed Godwit along west coast of India, underscoring critical conservation issues. From 2010 to 2023, both species experienced significant declines, with peak abundances observed on sandy beaches, deviating from their usual mudflat and mangrove habitats. Analysing 231 droppings identified seven key prey types, with polychaetes and small crabs being most common in mangroves and mudflats, while Cosmonotus crabs were predominantly found on sand beaches. Species-specific prey preferences were evident, with Bar-tailed Godwits showing a significant association with polychaetes and medium crabs. The findings highlight the urgent need for habitat restoration, pollution reduction, and focused conservation efforts to ensure the resilience and survival of these critical shorebird species.

本研究考察了印度西海岸濒临灭绝的欧亚杓鹬和条尾杓鹬的种群动态和食物模式，强调了关键的保护问题。从 2010 年到 2023 年，这两个物种的数量都出现了显著下降，在沙滩上观察到的数量达到高峰，偏离了它们通常的泥滩和红树林栖息地。通过分析 231 只螃蟹的排泄物，确定了七种主要的猎物类型，其中多毛类和小螃蟹在红树林和泥滩中最为常见，而 Cosmonotus 螃蟹则主要出现在沙滩上。不同物种对猎物的偏好也很明显，条尾鲣鸟与多毛目环节动物和中型螃蟹的关系密切。研究结果突显了恢复栖息地、减少污染和集中保护的迫切需要，以确保这些重要岸鸟物种的恢复能力和生存。

{"title":"Unveiling the diets of Eurasian Curlew and Bar-tailed Godwit through droppings analysis on the west coast of India","authors":"T.R. Athira , K.A. Rubeena , K. Jishnu , C.T. Shifa , Omer R. Reshi , A.P. Rashiba , T. Jobiraj , P. Thejass","doi":"10.1016/j.wsee.2024.09.002","DOIUrl":"10.1016/j.wsee.2024.09.002","url":null,"abstract":"<div><div>This study examines the population dynamics and dietary patterns of the near-threatened Eurasian Curlew and Bar-tailed Godwit along west coast of India, underscoring critical conservation issues. From 2010 to 2023, both species experienced significant declines, with peak abundances observed on sandy beaches, deviating from their usual mudflat and mangrove habitats. Analysing 231 droppings identified seven key prey types, with polychaetes and small crabs being most common in mangroves and mudflats, while Cosmonotus crabs were predominantly found on sand beaches. Species-specific prey preferences were evident, with Bar-tailed Godwits showing a significant association with polychaetes and medium crabs. The findings highlight the urgent need for habitat restoration, pollution reduction, and focused conservation efforts to ensure the resilience and survival of these critical shorebird species.</div></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 187-194"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589471424000159/pdfft?md5=e7991eda44987a8d9d9713d6fd2f0b5f&pid=1-s2.0-S2589471424000159-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142312560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of burnt tire-ash (water-soluble fraction) on blood and histopathological markers in Clarias gariepinus 烧焦的轮胎灰（水溶性成分）对金枪鱼血液和组织病理学指标的影响

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.08.002

Adewale Adeolu , Roseline Nwose , Joshua Ekpenyong , Md. Simul Bhuyan , Elizabeth Tabi , Stanley Iheanacho , Johnny Ogunji

Aquatic habitats serve as pollutant reservoirs and experience massive pollution disasters due to anthropogenic pressure. The effect of the Water-Soluble Fraction (WSF) of burnt tire ash (BTA) was investigated on Clarias gariepinus juvenile using blood biomarkers as well as liver and gill histology. The model fish were exposed to 5 % (0.56 g/L), 10 % (1.12 g/L) and 20 % (2.24 g/L) of 96-hr LC₅₀ (11.2 g/L) value of BTA sub-chronic doses during the experiment. Hematological indices, the liver, and gill histology were studied throughout the 28-day exposure study, which was followed by a 14-day post-exposure trial. The studies revealed that BTA-exposed fish had reduced red blood cells, packed cell volume, and hemoglobin levels with time, whereas white blood cells and leukocyte numbers increased. Concentration-dependent histopathologic abnormalities such as hyperplasia, telangiectasis, hemorrhage, desquamation, lamellar edema, and vacuolation were observed in the gill of the affected fish, in contrast to the control. Likewise, the presence of histopathologic abnormalities in the liver of BTA-exposed fish, such as vacuolar degeneration, hyperplasia, dilated portal vein, pyknotic nucleus formations, hypertrophy hepatocytes, and aggregated macrophages, was concentration-dependent. Following apparent histologic deformities that persisted in the tissues after recovery, healing from BTA exposure was only partial. C. gariepinus is an essential bioindicator of burnt tire ash’s ecotoxicological impact. Point and non-point traces of burnt-tire ash to the aquatic systems may harm aquatic animal species, thus necessitating preventative actions.

水生栖息地是污染物的贮存库，在人为压力下经历着大规模的污染灾难。本研究利用血液生物标志物以及肝脏和鳃组织学研究了烧轮胎灰（BTA）的水溶性馏分（WSF）对赤鲈幼鱼的影响。实验期间，模型鱼分别暴露于 BTA 亚慢性剂量 96 小时半数致死浓度（11.2 克/升）的 5%（0.56 克/升）、10%（1.12 克/升）和 20%（2.24 克/升）。在为期 28 天的暴露研究中，对血液学指数、肝脏和鳃组织学进行了研究，随后进行了为期 14 天的暴露后试验。研究显示，暴露于 BTA 的鱼类的红细胞、充盈细胞体积和血红蛋白水平会随着时间的推移而降低，而白细胞和白血球数量则会增加。与对照组相比，受影响鱼的鳃部出现了与浓度相关的组织病理学异常，如增生、毛细血管扩张、出血、脱屑、片状水肿和空泡化。同样，暴露于 BTA 的鱼的肝脏也出现了组织病理学异常，如空泡变性、增生、门静脉扩张、脓结核形成、肝细胞肥大和巨噬细胞聚集，这些都与浓度有关。组织学上的明显畸形在恢复后仍然存在，暴露于 BTA 后的愈合只是部分的。鲤鱼是烧焦的轮胎灰对生态毒理学影响的重要生物指标。烧胎灰在水生系统中的点状和非点状痕迹可能会对水生动物物种造成危害，因此有必要采取预防措施。

{"title":"Effect of burnt tire-ash (water-soluble fraction) on blood and histopathological markers in Clarias gariepinus","authors":"Adewale Adeolu , Roseline Nwose , Joshua Ekpenyong , Md. Simul Bhuyan , Elizabeth Tabi , Stanley Iheanacho , Johnny Ogunji","doi":"10.1016/j.wsee.2024.08.002","DOIUrl":"10.1016/j.wsee.2024.08.002","url":null,"abstract":"<div><p>Aquatic habitats serve as pollutant reservoirs and experience massive pollution disasters due to anthropogenic pressure. The effect of the Water-Soluble Fraction (WSF) of burnt tire ash (BTA) was investigated on <em>Clarias gariepinus</em> juvenile using blood biomarkers as well as liver and gill histology. The model fish were exposed to 5 % (0.56 g/L), 10 % (1.12 g/L) and 20 % (2.24 g/L) of 96-hr LC<sub>50</sub> (11.2 g/L) value of BTA sub-chronic doses during the experiment. Hematological indices, the liver, and gill histology were studied throughout the 28-day exposure study, which was followed by a 14-day post-exposure trial. The studies revealed that BTA-exposed fish had reduced red blood cells, packed cell volume, and hemoglobin levels with time, whereas white blood cells and leukocyte numbers increased. Concentration-dependent histopathologic abnormalities such as hyperplasia, telangiectasis, hemorrhage, desquamation, lamellar edema, and vacuolation were observed in the gill of the affected fish, in contrast to the control. Likewise, the presence of histopathologic abnormalities in the liver of BTA-exposed fish, such as vacuolar degeneration, hyperplasia, dilated portal vein, pyknotic nucleus formations, hypertrophy hepatocytes, and aggregated macrophages, was concentration-dependent. Following apparent histologic deformities that persisted in the tissues after recovery, healing from BTA exposure was only partial. <em>C. gariepinus</em> is an essential bioindicator of burnt tire ash’s ecotoxicological impact. Point and non-point traces of burnt-tire ash to the aquatic systems may harm aquatic animal species, thus necessitating preventative actions.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 155-164"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2589471424000123/pdfft?md5=1b2d5c6f1785148f0c73b1aeffef31ef&pid=1-s2.0-S2589471424000123-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142122451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ecotoxicological status, source apportionment and human health risk assessment of potential toxic element in surface water and sediments of creeks along Bonny River, Nigeria 尼日利亚邦尼河沿岸溪流地表水和沉积物中潜在有毒元素的生态毒理学状况、来源分配和人类健康风险评估

Watershed Ecology and the Environment

Pub Date : 2024-01-01 DOI: 10.1016/j.wsee.2024.06.001

Omobolaji O. Afolabi , Peter B. Okwori , Olushola I.T. Yemi-Jonathan , Elekwachi Wali , Maureen C. Ugwu , Chimzurum D. Ugwa , Victoria O. Emelu , Toochukwu T. Ugwuechendu , Lilian C. Bosco-Abiahu , Sunny O. Asomaku

Potentially toxic elements (PTEs) are naturally available in the environment; however, anthropogenic activities encourage their high concentration, posing environmental and human health risks. The ecotoxicological status, source apportionment and health risk assessment of PTEs (Iron (Fe), Nickel (Ni), Cadmium (Cd), Selenium (Se), Zinc (Zn), Lead (Pb), Chromium (Cr) and Copper (Cu)) in creeks (Fibiri and Iwoama) along Bonny River were examined through laboratory analysis (American Public Health Association standard), indicators and statistical techniques. The PTEs concentration of surface water and sediment for both creeks exceeded the WHO allowable limit, and the surface water trended as Cr > Pb > Fe > Ni > Cd > Zn > Cu > Se for Fibiri creeks, Fe > Cr > Pb > Ni > Cd > Zn > Cu > Se for Iwoama creek while the sediment trended as Fe > Pb > Ni > Cr > Zn > Cd > Cu > Se for both creeks. The contamination factor (CF) of the creek’s sediment showed low CF (Zn and Cu), moderate CF (Ni, Pb and Cr) and very high CF (Fe and Cd), while risk index status ranged from low risk (Ni, Zn, Pb, Cr and Cu), moderate risk (Fe) and significantly high risk (Cd). The human health risk revealed that children could be exposed to potential non-carcinogenic effect (HI > 1) with Zn (1.64 and 2.03), and the Total Carcinogenic Risk (TCR) for children indicated high carcinogenic risk (TCR > 1 × 10⁻⁴) for Ni, Pb, Cr and Cd of the creeks’ environmental mediums. The similarity in the trend and status of the creeks suggested that both environments are exposed to similar anthropogenic activities impact.

潜在有毒元素（PTEs）在环境中自然存在，但人类活动促使其高度集中，对环境和人类健康造成危害。通过实验室分析（美国公共卫生协会标准）、指标和统计技术，对邦尼河沿岸小溪（菲比利溪和伊沃亚马溪）中的潜在有毒元素（铁 (Fe)、镍 (Ni)、镉 (Cd)、硒 (Se)、锌 (Zn)、铅 (Pb)、铬 (Cr) 和铜 (Cu)）的生态毒理学状况、来源分配和健康风险评估进行了研究。两条溪流的地表水和沉积物中的 PTEs 浓度都超过了世界卫生组织的允许限值，地表水的趋势是 Cr > Pb > Fe > Ni > Cd > Zn > Cu >；硒，而伊沃亚马溪的沉积物则呈以下趋势：Fe > Pb > Ni > Cr > Zn > Cd > Cu > Se。溪流沉积物的污染因子（CF）显示为低 CF（锌和铜）、中等 CF（镍、铅和铬）和极高 CF（铁和镉），而风险指数状况则从低风险（镍、锌、铅、铬和铜）、中等风险（铁）到显著高风险（镉）不等。人体健康风险显示，溪流环境介质中的镍、铅、铬和镉对儿童的潜在非致癌影响（HI > 1）为 1.64 和 2.03，对儿童的总致癌风险（TCR）为高致癌风险（TCR > 1 × 10-4）。溪流趋势和状况的相似性表明，这两种环境都受到类似人为活动的影响。

{"title":"Ecotoxicological status, source apportionment and human health risk assessment of potential toxic element in surface water and sediments of creeks along Bonny River, Nigeria","authors":"Omobolaji O. Afolabi , Peter B. Okwori , Olushola I.T. Yemi-Jonathan , Elekwachi Wali , Maureen C. Ugwu , Chimzurum D. Ugwa , Victoria O. Emelu , Toochukwu T. Ugwuechendu , Lilian C. Bosco-Abiahu , Sunny O. Asomaku","doi":"10.1016/j.wsee.2024.06.001","DOIUrl":"https://doi.org/10.1016/j.wsee.2024.06.001","url":null,"abstract":"<div><p>Potentially toxic elements (PTEs) are naturally available in the environment; however, anthropogenic activities encourage their high concentration, posing environmental and human health risks. The ecotoxicological status, source apportionment and health risk assessment of PTEs (Iron (Fe), Nickel (Ni), Cadmium (Cd), Selenium (Se), Zinc (Zn), Lead (Pb), Chromium (Cr) and Copper (Cu)) in creeks (Fibiri and Iwoama) along Bonny River were examined through laboratory analysis (American Public Health Association standard), indicators and statistical techniques. The PTEs concentration of surface water and sediment for both creeks exceeded the WHO allowable limit, and the surface water trended as Cr > Pb > Fe > Ni > Cd > Zn > Cu > Se for Fibiri creeks, Fe > Cr > Pb > Ni > Cd > Zn > Cu > Se for Iwoama creek while the sediment trended as Fe > Pb > Ni > Cr > Zn > Cd > Cu > Se for both creeks. The contamination factor (CF) of the creek’s sediment showed low CF (Zn and Cu), moderate CF (Ni, Pb and Cr) and very high CF (Fe and Cd), while risk index status ranged from low risk (Ni, Zn, Pb, Cr and Cu), moderate risk (Fe) and significantly high risk (Cd). The human health risk revealed that children could be exposed to potential non-carcinogenic effect (HI > 1) with Zn (1.64 and 2.03), and the Total Carcinogenic Risk (TCR) for children indicated high carcinogenic risk (TCR > 1 × 10<sup>−4</sup>) for Ni, Pb, Cr and Cd of the creeks’ environmental mediums. The similarity in the trend and status of the creeks suggested that both environments are exposed to similar anthropogenic activities impact.</p></div>","PeriodicalId":101280,"journal":{"name":"Watershed Ecology and the Environment","volume":"6 ","pages":"Pages 105-113"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S258947142400007X/pdfft?md5=1be187ecb2b3452261247180a8ad87b8&pid=1-s2.0-S258947142400007X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141481034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0