Pub Date : 2023-12-22DOI: 10.1080/07011784.2023.2290962
Jacques C. Tardif, France Conciatori, David L. Smith
In southcentral Canada, paleoflood reconstructions have mainly focussed on identifying flood rings in upper terrace bur oak (Quercus macrocarpa) trees from the Red and Assiniboine rivers. In contra...
{"title":"Flood rings, earlywood vessels and hydrological signal in Fraxinus pennsylvanica trees growing along the central Assiniboine river floodplain, southcentral Canada","authors":"Jacques C. Tardif, France Conciatori, David L. Smith","doi":"10.1080/07011784.2023.2290962","DOIUrl":"https://doi.org/10.1080/07011784.2023.2290962","url":null,"abstract":"In southcentral Canada, paleoflood reconstructions have mainly focussed on identifying flood rings in upper terrace bur oak (Quercus macrocarpa) trees from the Red and Assiniboine rivers. In contra...","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"35 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139018120","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}
Pub Date : 2023-12-19DOI: 10.1080/07011784.2023.2289805
Katherine Hanly, Shawn Marshall, Graham McDowell
Glaciers across Canada are rapidly retreating, engendering significant implications for glacier-fed hydrological systems, ranging from aquatic ecology and groundwater recharge to downstream economi...
{"title":"The state of glacier hydrology research in Canada","authors":"Katherine Hanly, Shawn Marshall, Graham McDowell","doi":"10.1080/07011784.2023.2289805","DOIUrl":"https://doi.org/10.1080/07011784.2023.2289805","url":null,"abstract":"Glaciers across Canada are rapidly retreating, engendering significant implications for glacier-fed hydrological systems, ranging from aquatic ecology and groundwater recharge to downstream economi...","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"9 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138824568","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}
Pub Date : 2023-12-11DOI: 10.1080/07011784.2023.2288890
Stephanie Bacsu, Christopher Spence
Wetlands that occupy topographic depressions are a defining feature of the Canadian Prairie. These features control hydrological connectivity as they contain high storage capacity relative to typic...
{"title":"Towards a dynamic effective drainage area map for the Canadian Prairie: Sensitivity of contributing area to wetland storage capacity","authors":"Stephanie Bacsu, Christopher Spence","doi":"10.1080/07011784.2023.2288890","DOIUrl":"https://doi.org/10.1080/07011784.2023.2288890","url":null,"abstract":"Wetlands that occupy topographic depressions are a defining feature of the Canadian Prairie. These features control hydrological connectivity as they contain high storage capacity relative to typic...","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"24 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138577333","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}
Pub Date : 2023-11-21DOI: 10.1080/07011784.2023.2283241
André St-Hilaire, Muhammed A. Oyinlola, Eisinhower Rincón, Habiba Ferchichi
River temperature is a key water quality variable in rivers and streams, as it modulates many other water quality variables as well as the metabolism, dispersion, and behavior of lotic biota. This ...
{"title":"Six decades of research on river temperature in Canada","authors":"André St-Hilaire, Muhammed A. Oyinlola, Eisinhower Rincón, Habiba Ferchichi","doi":"10.1080/07011784.2023.2283241","DOIUrl":"https://doi.org/10.1080/07011784.2023.2283241","url":null,"abstract":"River temperature is a key water quality variable in rivers and streams, as it modulates many other water quality variables as well as the metabolism, dispersion, and behavior of lotic biota. This ...","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"6 18","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138508735","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}
Pub Date : 2023-11-21DOI: 10.1080/07011784.2023.2269137
Jonathan S. Price, Owen F. Sutton, Colin P. R. McCarter, William L. Quinton, James M. Waddington, Pete N. Whittington, Maria Strack, Rich M. Petrone
Wetlands are an integral part of the Canadian landscape, providing crucial ecohydrological services with globally significant benefits. Over the past 75 years, Canadian scientists have emerged as i...
{"title":"Advances in wetland hydrology: the Canadian contribution over 75 years","authors":"Jonathan S. Price, Owen F. Sutton, Colin P. R. McCarter, William L. Quinton, James M. Waddington, Pete N. Whittington, Maria Strack, Rich M. Petrone","doi":"10.1080/07011784.2023.2269137","DOIUrl":"https://doi.org/10.1080/07011784.2023.2269137","url":null,"abstract":"Wetlands are an integral part of the Canadian landscape, providing crucial ecohydrological services with globally significant benefits. Over the past 75 years, Canadian scientists have emerged as i...","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"7 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138508748","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}
Pub Date : 2023-11-01DOI: 10.1080/07011784.2023.2267028
J. Daniel Weller, R. D. (Dan) Moore, Josephine C. Iacarella
AbstractWater temperature is a key feature of freshwater ecosystems but comprehensive datasets are severely lacking, a limiting factor in research and management of freshwater species and habitats. An existing statistical stream temperature model developed for British Columbia (BC), Canada, was refit to predict August mean stream temperatures, a common index of stream thermal regime also used in thermalscapes developed for the western United States (US). Thermalscapes of predicted August mean stream temperature were produced for 680,000 km of stream network at approximately 400 m intervals. Temperature predictions were averaged for 20-year periods from 1981-2100 to produce 86 scenarios: one for each historical period (i.e. 1981-2000, 2001-2020), and 21 for each future period (i.e. six global climate models and an ensemble average under three representative concentration pathways). The final model performance was consistent with other published regional-scale statistical models (R2 = 0.79, RMSE = 1.53 °C, MAE = 1.18 °C), performing well given the relative paucity of data, large geographic extent, and range of climatic and physiographic conditions. Model results suggested an average increase of August mean stream temperature of 2.9 ± 1.0 °C (RCP 4.5 ensemble mean ± SD) by end of century, with significant heterogeneity in predicted temperatures and warming rates across the province. Compared to stream temperature predictions from the western US, the predictions for BC showed good agreement at cross-border streams (Pearson’s r = 0.91), suggesting the possible integration of both products for a thermalscape covering much of western North America. These stream thermalscapes for BC address a major data deficiency in freshwater ecosystems and have potential applications to stream ecology, species distribution modelling, and evaluation of climate change impacts.RÉSUMÉLa température de l’eau est une caractéristique importante des écosystèmes d’eau douce, mais les ensembles de données complets sont largement insuffisants, ce qui limite la recherche et la gestion des espèces et des habitats d’eau douce. On a adapté un modèle statistique existant de la température des cours d’eau développé pour la Colombie-Britannique pour prédire les températures moyennes des cours d’eau en août, un indice commun du régime thermique des cours d’eau aussi utilisé dans les paysages thermiques élaborés pour l’ouest des États-Unis. On a produit les paysages thermiques de la température moyenne prévue au mois d’août pour 680000km de réseau de cours d’eau à des intervalles d’environ400mètres. On a calculé la moyenne des prévisions de température pour des périodes de 20ans de 1981 à 2100 en vue de produire 86scénarios: un pour chaque période passée (c.-à-d. de 1981 à 2000 et de 2001 à 2020) et 21 pour chaque période future [c.-à-d. six modèles climatiques globaux et une moyenne de l’ensemble de trois profils représentatifs d’évolution de la concentration (RCP)]. La performance fina
{"title":"Stream thermalscape scenarios for British Columbia, Canada","authors":"J. Daniel Weller, R. D. (Dan) Moore, Josephine C. Iacarella","doi":"10.1080/07011784.2023.2267028","DOIUrl":"https://doi.org/10.1080/07011784.2023.2267028","url":null,"abstract":"AbstractWater temperature is a key feature of freshwater ecosystems but comprehensive datasets are severely lacking, a limiting factor in research and management of freshwater species and habitats. An existing statistical stream temperature model developed for British Columbia (BC), Canada, was refit to predict August mean stream temperatures, a common index of stream thermal regime also used in thermalscapes developed for the western United States (US). Thermalscapes of predicted August mean stream temperature were produced for 680,000 km of stream network at approximately 400 m intervals. Temperature predictions were averaged for 20-year periods from 1981-2100 to produce 86 scenarios: one for each historical period (i.e. 1981-2000, 2001-2020), and 21 for each future period (i.e. six global climate models and an ensemble average under three representative concentration pathways). The final model performance was consistent with other published regional-scale statistical models (R2 = 0.79, RMSE = 1.53 °C, MAE = 1.18 °C), performing well given the relative paucity of data, large geographic extent, and range of climatic and physiographic conditions. Model results suggested an average increase of August mean stream temperature of 2.9 ± 1.0 °C (RCP 4.5 ensemble mean ± SD) by end of century, with significant heterogeneity in predicted temperatures and warming rates across the province. Compared to stream temperature predictions from the western US, the predictions for BC showed good agreement at cross-border streams (Pearson’s r = 0.91), suggesting the possible integration of both products for a thermalscape covering much of western North America. These stream thermalscapes for BC address a major data deficiency in freshwater ecosystems and have potential applications to stream ecology, species distribution modelling, and evaluation of climate change impacts.RÉSUMÉLa température de l’eau est une caractéristique importante des écosystèmes d’eau douce, mais les ensembles de données complets sont largement insuffisants, ce qui limite la recherche et la gestion des espèces et des habitats d’eau douce. On a adapté un modèle statistique existant de la température des cours d’eau développé pour la Colombie-Britannique pour prédire les températures moyennes des cours d’eau en août, un indice commun du régime thermique des cours d’eau aussi utilisé dans les paysages thermiques élaborés pour l’ouest des États-Unis. On a produit les paysages thermiques de la température moyenne prévue au mois d’août pour 680000km de réseau de cours d’eau à des intervalles d’environ400mètres. On a calculé la moyenne des prévisions de température pour des périodes de 20ans de 1981 à 2100 en vue de produire 86scénarios: un pour chaque période passée (c.-à-d. de 1981 à 2000 et de 2001 à 2020) et 21 pour chaque période future [c.-à-d. six modèles climatiques globaux et une moyenne de l’ensemble de trois profils représentatifs d’évolution de la concentration (RCP)]. La performance fina","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"3 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135222048","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}
Pub Date : 2023-10-27DOI: 10.1080/07011784.2023.2265893
Nicolas Fontaine, Marie-Amélie Boucher, François Anctil, Jean Odry, Simon Lachance-Cloutier, Vincent Fortin, Richard Turcotte
AbstractThe development and expanded application of large-scale hydrological models has produced forecasts that often overlap with more targeted, regional hydrological forecasts. Here the possibility is explored for using simple methods to combine forecasts from a large-scale model, the Great Lakes portion of the National Surface and River Prediction System (NSRPS), and a regional system, the Système de Prévision Hydrologique (SPH) which covers southern Quebec, to improve regional forecasts. Outputs from the two forecasting systems are combined using multiple methods, including the simple mean, a weighted average in which the weights are optimized using the Kling-Gupta Efficiency (KGE), the Reduced Continuous Ranked Probability Score (RCRPS), and Ignorance Score (IGN) as cost functions, and weights calculated from the residual errors of the models. Bayesian Model Averaging (BMA) is also used to combine the probabilistic forecasts from both systems. The results show that it is possible to improve regional hydrological forecasts by using simple weighted combinations with forecasts from the large-scale system, even though the regional system performs clearly better. Performance is assessed via many well-known metrics, such as Nash-Sutcliffe Efficiency (NSE), KGE, RCRPS, and IGN. Results are averaged over 40 gauging stations and analyzed at lead times from 3 to 120 h. Improvements in all criteria for lead times over 60 h are observed, and there is no loss in performance at any lead times. Finally, the methods are used in a leave-one-out setup containing 29 validation basins to simulate performance on ungauged basins. The performance gain for ungauged basins is similar to that of the gauged basins, demonstrating that these simple methods can also improve forecasts in more remote territories where no gauging is available.RésuméLe développement et l’application étendue des modèles hydrologiques large-échelle ont produit des prévisions qui chevauchent régulièrement des prévisions hydrologiques régionales, plus spécifiques à un territoire. Cette étude porte sur l’utilisation de méthodes simples permettant la combinaison des prévisions large-échelle de la partie des Grands Lacs du National Surface and River Prediction System (NSRPS) aux prévisions régionales du Système de Prévision Hydrologique (SPH) qui couvre le sud du Québec, afin d’améliorer ces prévisions régionales. Les sorties de ces deux systèmes sont combinées selon plusieurs méthodes incluant la moyenne simple, des moyennes pondérées qui utilisent comme fonction de coût le Kling-Gupta Efficiency (KGE), le Reduced Continuous Ranked Probability Score (RCRPS) et l’Ignorance Score (IGN), en plus de poids calculés selon les résidus des modèles. Le Bayesian Model Averaging (BMA) est aussi utilisé pour combiner les prévisions des systèmes. Les résultats montrent qu’il est possible d’améliorer les prévisions hydrologiques régionales en utilisant de simples combinaisons pondérées avec les prévisions du sy
摘要随着大尺度水文模型的发展和应用的扩大,预测结果往往与更有针对性的区域水文预测相重叠。这里探讨了使用简单方法将来自大型模型的预报结合起来的可能性,即国家地表和河流预报系统(NSRPS)的五大湖部分,以及覆盖魁北克省南部的区域系统,即pracrivision Hydrologique系统(SPH),以改进区域预报。两个预测系统的输出使用多种方法进行组合,包括简单平均值,加权平均值,其中权重使用克林-古普塔效率(KGE),减少连续排名概率分数(RCRPS)和无知分数(IGN)作为成本函数进行优化,以及从模型的残差计算的权重。贝叶斯模型平均(BMA)也被用于结合两个系统的概率预测。结果表明,尽管区域系统的预报效果明显更好,但通过与大尺度系统预报的简单加权组合来改进区域水文预报是可能的。性能是通过许多众所周知的指标来评估的,比如纳什-萨特克利夫效率(NSE)、KGE、RCRPS和IGN。结果在40个测量站上进行平均,并在3至120小时的交货时间内进行分析。在超过60小时的交货时间内,观察到所有标准都有所改善,并且在任何交货时间内都没有性能损失。最后,将这些方法用于包含29个验证盆地的留一设置中,以模拟未测量盆地的性能。未测量盆地的性能增益与测量盆地相似,表明这些简单的方法也可以改善没有测量的偏远地区的预测。汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通汇通。单一的、简单的、渗透的、混合的、大型的、由国家地表和河流预报系统(NSRPS)组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的、由系统组成的。混合混合系统的混合混合系统,包括简单的混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统,混合混合系统。勒贝叶斯模型平均(BMA)是一种实用的混合系统。时候montrent说它可能d改进Les > hydrologiques地区现在de simples combinaisons ponderees用莱斯> du systeme large-echelle et ce meme si勒地区performe mieux缆车和large-echelle。这些性能指标包括:纳什-萨特克利夫效率(NSE)、KGE、RCRPS和IGN。结果的平均值在40台德jaugeage等分析倒3 des视野de 120 h。des是经验观察苏尔准则分为满分倒des视野de 60 h +,等没有任何perte de性能n是observee苏尔全部的视野。最后,将3种不同的混和器组合在一起,使用3种混和器组合在一起,配置“留一个”,29种混和器组合在一起,性能组合在一起,使用4种混和器组合在一起,非混和器组合。在不同的分类中,不同的分类与不同的分类相似,不同的分类与不同的分类,不同的分类与不同的分类,不同的分类,不同的分类,不同的分类,不同的分类,不同的分类,不同的分类,不同的分类,不同的分类,不同的分类,不同的分类,不同的分类。关键词:贝叶斯模型平均水文后处理水文预报预报合并披露声明作者未报告潜在利益冲突。数据可用性声明支持本研究结果的数据可根据合理要求从通讯作者[MAB]处获得。本文所描述的工作是由魁北克政府资助的一项研究合同的一部分。
{"title":"Combining large-scale and regional hydrological forecasts using simple methods","authors":"Nicolas Fontaine, Marie-Amélie Boucher, François Anctil, Jean Odry, Simon Lachance-Cloutier, Vincent Fortin, Richard Turcotte","doi":"10.1080/07011784.2023.2265893","DOIUrl":"https://doi.org/10.1080/07011784.2023.2265893","url":null,"abstract":"AbstractThe development and expanded application of large-scale hydrological models has produced forecasts that often overlap with more targeted, regional hydrological forecasts. Here the possibility is explored for using simple methods to combine forecasts from a large-scale model, the Great Lakes portion of the National Surface and River Prediction System (NSRPS), and a regional system, the Système de Prévision Hydrologique (SPH) which covers southern Quebec, to improve regional forecasts. Outputs from the two forecasting systems are combined using multiple methods, including the simple mean, a weighted average in which the weights are optimized using the Kling-Gupta Efficiency (KGE), the Reduced Continuous Ranked Probability Score (RCRPS), and Ignorance Score (IGN) as cost functions, and weights calculated from the residual errors of the models. Bayesian Model Averaging (BMA) is also used to combine the probabilistic forecasts from both systems. The results show that it is possible to improve regional hydrological forecasts by using simple weighted combinations with forecasts from the large-scale system, even though the regional system performs clearly better. Performance is assessed via many well-known metrics, such as Nash-Sutcliffe Efficiency (NSE), KGE, RCRPS, and IGN. Results are averaged over 40 gauging stations and analyzed at lead times from 3 to 120 h. Improvements in all criteria for lead times over 60 h are observed, and there is no loss in performance at any lead times. Finally, the methods are used in a leave-one-out setup containing 29 validation basins to simulate performance on ungauged basins. The performance gain for ungauged basins is similar to that of the gauged basins, demonstrating that these simple methods can also improve forecasts in more remote territories where no gauging is available.RésuméLe développement et l’application étendue des modèles hydrologiques large-échelle ont produit des prévisions qui chevauchent régulièrement des prévisions hydrologiques régionales, plus spécifiques à un territoire. Cette étude porte sur l’utilisation de méthodes simples permettant la combinaison des prévisions large-échelle de la partie des Grands Lacs du National Surface and River Prediction System (NSRPS) aux prévisions régionales du Système de Prévision Hydrologique (SPH) qui couvre le sud du Québec, afin d’améliorer ces prévisions régionales. Les sorties de ces deux systèmes sont combinées selon plusieurs méthodes incluant la moyenne simple, des moyennes pondérées qui utilisent comme fonction de coût le Kling-Gupta Efficiency (KGE), le Reduced Continuous Ranked Probability Score (RCRPS) et l’Ignorance Score (IGN), en plus de poids calculés selon les résidus des modèles. Le Bayesian Model Averaging (BMA) est aussi utilisé pour combiner les prévisions des systèmes. Les résultats montrent qu’il est possible d’améliorer les prévisions hydrologiques régionales en utilisant de simples combinaisons pondérées avec les prévisions du sy","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136262164","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}
Pub Date : 2023-10-14DOI: 10.1080/07011784.2023.2267034
Katherine N. Snihur, Julia Valentina Soares, Alex Oiffer, Alberto V. Reyes, Shannon L. Flynn, Brian D. Smerdon, Kurt O. Konhauser, Duane Froese, Daniel S. Alessi
AbstractThe prairies and boreal plain within the North Saskatchewan Watershed (NSW) of Central Alberta have numerous shallow ponds and lakes that sustain unique aquatic ecosystems and are critical habitat for migratory waterfowl in North America. However, over the past 20 years water levels have declined and the reasons are unresolved. Here we used a combination of inorganic geochemical analyses and stable water isotopes to constrain the hydrologic budgets of six lakes in the NSW. Our results show that the bedrock groundwater major element geochemistry is controlled by chemical weathering reactions along the flow paths and is dominated by lower δ18O and δ2H values (i.e. isotopically depleted), while the lake water generally shows unchanging evaporatively enriched stable isotope values and cation concentrations. An isotopic mass balance (IMB) technique combined with solution geochemical modelling using activity – activity plots reveals that deep groundwater input is negligible, while the lakes appear to lose a greater fraction of water inflows to evaporation (60%) than shallow groundwater and surface outflow (40%). The relative importance of shallow groundwater requires further study, as shallow groundwater sampling locations are scarce and surface outflow is negligible. The IMB technique also indicated that these prairie lakes have short water residence times, ranging from 1.8 to 10.4 yrs. Our results suggest that declining lake levels are likely the result of a changing relationship between precipitation and evaporation from the climatic norm.RÉSUMÉLes prairies et la plaine boréale du bassin versant de la rivière Saskatchewan Nord (RSN) du centre de l’Alberta abritent de nombreux étangs, marres et lacs peu profonds qui soutiennent des écosystèmes aquatiques uniques et constituent un habitat essentiel pour les oiseaux migrateurs en Amérique du Nord. Cependant, au cours des 20 dernières années, les niveaux d‘eau ont drastiquement diminué et les raisons environnementales restent inexpliquées. Cette étude utilise une combinaison d‘analyses géochimiques inorganiques et isotopiques de l‘eau pour contraindre les bilans hydrologiques de six lacs de la RSN. Nos résultats démontrent que les éléments majeurs des eaux souterraines sont contrôlés par des réactions liées à l’altération chimique sur les zones d’écoulements et sont dominés par des valeurs δ18O and δ2H plus basses (c‘est-à-dire isotopiquement appauvries). Au contraire, l‘eau des lacs montre généralement des valeurs isotopiques stables enrichies par l’évaporation et des concentrations constantes en cations. Une technique de bilan isotopique (IMB), combinée à la modélisation géochimique des solutions et des graphiques d‘activité révèle que l‘apport en eaux souterraines profondes est négligeable. En revanche, les lacs semblent perdre leur plus grande fraction des apports en eau par évaporation (60%), puis par les eaux souterraines peu profondes et les écoulements de surface (40%). L'importance rela
摘要艾伯塔省中部北部萨斯喀彻温流域(NSW)的大草原和北方平原有许多浅水池塘和湖泊,维持着独特的水生生态系统,是北美迁徙水禽的重要栖息地。然而,在过去的20年里,水位下降了,原因还没有解决。本文采用无机地球化学分析和稳定水同位素相结合的方法对新南威尔士州6个湖泊的水文收支进行了约束。研究结果表明,基岩地下水主元素地球化学受沿路化学风化反应控制,以δ18O和δ2H值较低(即同位素耗尽)为主,而湖水总体表现为蒸发富集稳定同位素值和阳离子浓度不变。同位素质量平衡(IMB)技术结合使用活动性-活动性图的溶液地球化学模拟表明,深层地下水输入可以忽略不计,而湖泊似乎失去了更大比例的水流入蒸发(60%)比浅层地下水和地表流出(40%)。浅层地下水的相对重要性需要进一步研究,因为浅层地下水采样点很少,地表流出量可以忽略不计。IMB技术还表明,这些草原湖泊的水停留时间较短,在1.8 ~ 10.4年之间。我们的研究结果表明,湖泊水位的下降很可能是气候常态下降水和蒸发之间关系变化的结果。RÉSUMÉLes草原与平原、平原与平原、平原与平原、平原与平原、平原与平原、平原与平原、萨斯喀彻温北部、平原与平原、平原与平原、平原与平原与平原、平原与平原与平原、平原与平原与平原与平原、平原与平原与平原与平原、平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间、平原与平原之间。在此之前,关于20个不明原因的交换器和交换器的课程已经减少了,以及环境对不明原因的交换器产生不满的原因。该方法采用了一种结合分析的方法,即利用化学、无机和同位素分析的方法,研究了青藏高原6个地区的水文特征。3 .没有任何一种不同的交换条件,即没有任何一种交换条件,即没有任何一种交换条件,即没有任何一种交换条件,即没有任何一种交换条件,即没有任何一种交换条件,即没有任何一种交换条件,即没有任何一种交换条件。相反,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下,在不同的情况下。一种同位素技术(IMB),结合了电子交换器、电子交换器、电子交换器、电子交换器、电子交换器、电子交换器、电子交换器、电子交换器、电子交换器和电子交换器。在复仇的过程中,大部分的人都有类似的行为,大部分人都有类似的行为(60%),大部分人都有类似的行为(60%),大部分人都有类似的行为(40%)。“重要的是,相对于其他的南方的部分,也就是其他的部分,也就是其他的部分,也就是其他的部分,也就是其他的部分,也就是其他的部分。La technique IMB - a - samgalement individual - ququire - les les les de prairies - samtudisames - temps - de samdiys - court,变体1,8,10,4 annesides。3 .没有任何一种形式的薪金薪金与薪金薪金之间的关系,没有任何一种形式的薪金薪金与薪金薪金之间的关系,没有任何一种形式的薪金薪金与薪金薪金之间的关系。关键词:地下水水文预算环境地球化学公开声明作者未发现潜在利益冲突。我们感谢帕克兰县和北萨斯喀彻温流域联盟(NSWA)的居民和志愿者的贡献,没有他们,这个项目就不会成功。此外,我们要感谢阿尔伯塔大学的Aria Zhang,她协助进行了样本分析。我们要感谢北美区域再分析(NARR)的shichi - fan提供了53 ~ 54N和-114 ~ -115W之间的蒸发数据。我们也要感谢加拿大自然科学与工程研究委员会(NSERC)以本科生研究奖(USRA)的形式资助本项目给KNS和NSERC发现补助金给DSA (rgpin2020 -05289)和DGF。作者未发现潜在的竞争利益。本研究得到了加拿大机械加工技术研究与创新网络、加拿大自然科学与工程研究委员会的支持。
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Pub Date : 2023-09-28DOI: 10.1080/07011784.2023.2263412
Daniel Macfarlane
AbstractThis paper reviews the history and evolution of Canada-United States transboundary water quantity politics (hydroelectricity, canals, irrigation, etc.) over the last 75 years: megaprojects on the St. Lawrence, Niagara, and Columbia Rivers during the early Cold War, a wide variety of transborder water issues stretching from coast to coast during the latter half of the twentieth century, and then recent hydropolitics concerning diversions from the Great Lakes basin. Utilizing an environmental history approach, and drawing from other fields such as historical geography, water policy, and political ecology, I show that Canada and the United States cooperatively manipulated border water environments on a large scale. Despite this coordination, there was often significant political and diplomatic controversy. I argue that coordinating or dealing with the United States deeply influenced the development of hydroelectricity in Canada, as well as the related hydraulic engineering expertise and technology. Moreover, transborder water politics also influenced many aspects of Canadian economic and political development, including federal-provincial relations. I explore themes such as Canada as a hydro state, the role of the Boundary Waters Treaty and the International Joint Commission, and concepts such as hydraulic nationalism and hydraulic imperialism.Keywords: Transboundary water politicsCanada-US relationswater diplomacyhydroelectricitywater quantity Disclosure statementNo potential conflict of interest was reported by the author.
{"title":"75 years of Canada-US transborder water quantity hydropolitics","authors":"Daniel Macfarlane","doi":"10.1080/07011784.2023.2263412","DOIUrl":"https://doi.org/10.1080/07011784.2023.2263412","url":null,"abstract":"AbstractThis paper reviews the history and evolution of Canada-United States transboundary water quantity politics (hydroelectricity, canals, irrigation, etc.) over the last 75 years: megaprojects on the St. Lawrence, Niagara, and Columbia Rivers during the early Cold War, a wide variety of transborder water issues stretching from coast to coast during the latter half of the twentieth century, and then recent hydropolitics concerning diversions from the Great Lakes basin. Utilizing an environmental history approach, and drawing from other fields such as historical geography, water policy, and political ecology, I show that Canada and the United States cooperatively manipulated border water environments on a large scale. Despite this coordination, there was often significant political and diplomatic controversy. I argue that coordinating or dealing with the United States deeply influenced the development of hydroelectricity in Canada, as well as the related hydraulic engineering expertise and technology. Moreover, transborder water politics also influenced many aspects of Canadian economic and political development, including federal-provincial relations. I explore themes such as Canada as a hydro state, the role of the Boundary Waters Treaty and the International Joint Commission, and concepts such as hydraulic nationalism and hydraulic imperialism.Keywords: Transboundary water politicsCanada-US relationswater diplomacyhydroelectricitywater quantity Disclosure statementNo potential conflict of interest was reported by the author.","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135344212","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}
Pub Date : 2023-08-16DOI: 10.1080/07011784.2023.2242815
James M. Leach, J. Keum, Jeffrey Karn, M. Garner, P. Coulibaly
{"title":"Informational analysis of the Canadian National Hydrometric program monitoring network","authors":"James M. Leach, J. Keum, Jeffrey Karn, M. Garner, P. Coulibaly","doi":"10.1080/07011784.2023.2242815","DOIUrl":"https://doi.org/10.1080/07011784.2023.2242815","url":null,"abstract":"","PeriodicalId":55278,"journal":{"name":"Canadian Water Resources Journal","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47674267","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}