A5014721310- Hydrology and Watershed Management Studies
- Climate change and permafrost
- Arctic and Antarctic ice dynamics
- Cryospheric studies and observations
- Hydrology and Sediment Transport Processes
- Flood Risk Assessment and Management
- Fish Ecology and Management Studies
- Soil and Water Nutrient Dynamics
- Coastal wetland ecosystem dynamics
- Peatlands and Wetlands Ecology
- Groundwater flow and contamination studies
- Soil erosion and sediment transport
- Methane Hydrates and Related Phenomena
- Remote Sensing and LiDAR Applications
- Hydrological Forecasting Using AI
- Coastal and Marine Dynamics
- Land Use and Ecosystem Services
- Groundwater and Isotope Geochemistry
- Freshwater macroinvertebrate diversity and ecology
- Ecology and biodiversity studies
- Hydrology and Drought Analysis
- Geological Studies and Exploration
- Aquatic Ecosystems and Phytoplankton Dynamics
- Climate variability and models
- Petroleum Processing and Analysis
University of Victoria
2015-2025
Environment and Climate Change Canada
2015-2025
University of Bonn
2021
Impact
2005-2019
Toronto Metropolitan University
2017
National Water Research Institute
2006
Trent University
1997-2002
Abstract An overview of current research in isotope hydrology, focusing on recent Canadian contributions, is discussed under the headings: precipitation networks, hydrograph separation and groundwater studies, river basin lake catchment water balance, palaeohydrology from sediment records. Tracer‐based techniques, relying primarily naturally occurring environmental isotopes, have been integrated into a range hydrological biogeochemical programmes, as they effectively complement physical...
Abstract The Surface Water and Ocean Topography (SWOT) mission will vastly expand measurements of global rivers, providing critical new data sets for both gaged ungaged basins. SWOT discharge products (available approximately 1 year after launch) provide all river that reaches wider than 100 m. In this paper, we describe how produced archived by the US French space agencies be computed from water surface elevation, width, slope ancillary data, along with expected accuracy. We present first...
Storm flow in forested basins on the Canadian Shield is largely supplied by subsurface water; however, mechanisms which this water reaches stream remain unclear. Side slope contributions to storm were studied using throughflow trenches slopes a headwater basin near Dorset, Ontario. Discharge, soil content, and chemical isotopic signatures of monitored at each site. Four hypotheses tested: (1) most occurs soil‐bedrock interface shield with thin soil; (2) significant fraction event moves...
This paper provides an overview of the key processes that generate floods in Canada, and a context for other papers this special issue – provide detailed examinations specific flood-generating processes. The historical flooding Canada is outlined, followed by summary regional aspects descriptions these regions, including generated snowmelt, rain-on-snow rainfall. Some flood are particularly relevant, or which have been less well studied described: groundwater, storm surges, ice-jams urban...
Abstract This study conducted a systematic examination of the flood hydrology Peace‐Athabasca Delta (PAD), complex and internationally important freshwater ecosystem located in northwestern Canada. Three distinct zones floodwater origin within PAD were discerned on basis dominant topography represented by digital‐elevation model (DEM): (1) perimeter Peace Delta, (2) Athabasca (3) central delta lakes. Analysis satellite image DEM‐derived maps historically significant events, combined with...
Temporary streams lack streamflow at some time in the seasonal cycle, and include ephemeral, intermittent episodic streams. They often serve as headwaters for perennial stream network a drainage basin, given that headwater can comprise majority of network, temporary are significant hydrologic features across country. Nevertheless, they have received relatively little attention compared to In addition, much previous work on has focussed semi-arid arid landscapes where annual...
Abstract We compared median runoff (R) and precipitation (P) relationships over 25 years from 20 mesoscale (50 to 5,000 km 2 ) catchments on the Boreal Plains, Alberta, Canada, understand controls water sink source dynamics in water‐limited, low‐relief northern environments. Long‐term catchment R efficiency (RP −1 were low varied spatially by an order of magnitude (3 119 mm/year, 1 27%). Intercatchment differences not associated with small variations climate. The partitioning P into...
The complexity and natural variability of ecosystems present a challenge for reliable detection change due to anthropogenic influences. This issue is exacerbated by necessary trade-offs that reduce the quality resolution survey data assessments at large scales. Peace–Athabasca Delta (PAD) inland wetland complex in northern Alberta, Canada. Despite its geographic isolation, PAD threatened encroachment oil sands mining Athabasca watershed hydroelectric dams Peace watershed. Methods capable...
The following review is the second part of a two series on use remotely sensed data for quantifying wetland extent and inferring or measuring condition monitoring drivers change environments. In first part, we introduce policy makers non-users with an effective feasibility guide how can be used. current review, explore more technical aspects processing analysis using case studies within literature. Here describe: (a) technologies used assessment monitoring; (b) latest algorithmic...
Abstract The headwaters of the Peace River, Canada became regulated in 1968 by a major hydroelectric facility and associated reservoir located Rocky Mountains. This paper examines change to downstream hydrographs that have resulted from regulation. To facilitate comparison, naturalized (without regulation effects) flow regime (1972–1996) was generated using combination hydrologic hydraulic models. results showed even some 1100 km downstream, there been significant changes hydrograph....
Abstract As a key contribution to Canada's Ecosystem Status and Trends (ESTR) national assessment, the goal of our study was utilize available flow data as surrogate habitat suitability for aquatic ecological communities, examine temporal trends in hydroecological variables over 1970–2005 period. Daily were extracted from Reference Hydrological Basin Network, an agglomerative hierarchical classification method used identify homogenous regions with similar seasonality regime. Six regime...
Simultaneous monitoring of conservative and non-conservative tracers in streamflow offers a valuable means obtaining information on the age flow paths water reaching basin outlet. Previous studies stormflow generation small forested Canadian Shield used isotopic (IHS) geochemical hydrograph separations (GHS) to infer that some event during snowmelt reaches stream via subsurface pathways, surface runoff is generated by direct precipitation saturated areas (DPSA) valley. These hypotheses were...
Abstract On average, 86% of riverine discharge to Great Slave Lake, Northwest Territories, Canada, was gauged during the period 1964–1998, offering an unprecedented opportunity study and understand controls on water balance a large northern lake at headwaters Mackenzie River. A functional daily model, incorporating measurements inflow, precipitation surface, evaporation, outflow developed, which predicts amplitude frequency annual level fluctuations, closes within ± 6% for 28 35 years 11%...
Abstract A distinctive hydrological feature of the Lake Athabasca–Peace–Athabasca Delta (LA‐PAD) complex is that flow in channels drain system reverses direction when stage on Peace River exceeds for central lakes. This river's hydrology has experienced natural and human induced changes since 1968. study investigates importance spring break‐up open‐water outflow obstruction reverse contributions to annual lake level maxima under (1960–1967), regulated (1976–2004) naturalized (1976–1996)...
Abstract Widespread alteration of flow regimes requires guidelines for the protection river ecosystems based on sound science. Preservation biodiversity within and sustaining natural ecological functions are key aspects their management. However, relationship between biota flow‐related phenomena is poorly understood and, as a consequence, over‐simplistic hydrology‐based management have been adopted without establishing clear indicators success. In present paper, we aim to support improvement...
Abstract It is a common practice to employ hydrologic models for assessing alterations streamflow as result of anthropogenically driven changes, such riverine, land use, and climate change. However, the ability replicate different components hydrograph simultaneously not clear. Hence, this study evaluates standard model set‐up: Variable Infiltration Capacity (VIC) two headwater sub‐basins in Fraser River (Salmon Willow), British Columbia, Canada, with inputs derived from observations...
Abstract A multi‐scale hydroclimatic study of runoff generation in the Athabasca River watershed located western Canada is presented. Mann–Kendall trend detection tests performed on hydrometric data for lower (LAR) revealed predominantly significant ( p < 0.05) declines annual and open‐water season median/mean indices over 1958–2009, with ice‐influenced experiencing median not mean. The presence or absence 25 th 75 percentiles helped explain these results. only noteworthy result from...
Wetlands have and continue to undergo rapid environmental anthropogenic modification change their extent, condition, therefore, ecosystem services. In this first part of a two-part review, we provide decision-makers with an overview on the use remote sensing technologies for ‘wise wetlands’, following Ramsar Convention protocols. The objectives review are provide: (1) synthesis history wetlands, (2) feasibility study quantify accuracy remotely sensed data products when compared field based...
Wetland ecosystems are sensitive to climate variation, yet tracking vegetation type and structure changes through time remains a challenge. This study examines how Landsat-derived indices (NDVI EVI) correspond with lidar-derived canopy height model (CHM) from 2000 2018 across the wetland landscape of Peace–Athabasca Delta (PAD), Canada. By comparing CHM change NDVI EVI trends woody herbaceous land covers, this fills gap in understanding long-term responses northern wetlands. Findings show...
This review presents a summary of the influences floods on river ecology, both instream and adjacent floodplain, mostly in Canadian context. It emphasizes that ecological impacts benefits can be highly dependent flood-generation processes their magnitude timing. In Canada, occur under open-water or ice-influenced conditions. The generated from ice jamming are particularly relevant ecosystems due to potentially higher water levels produced suspended sediment concentrations detrimental aquatic...
Oil sands development in the lower Athabasca River watershed has raised considerable public and scientific concerns regarding perceived effects on environmental health. To address this issue for tributaries mainstem of Sands Region, Water Component Joint Monitoring (JOSM) plan produced monitoring assessments seven integrated themes: atmospheric deposition, tributary water quality, river groundwater quality quantity, quantity modelling, benthic invertebrate condition, fish Our review...
Global Navigation Satellite System-Interferometric Reflectometry (GNSS-IR) is an emerging sensor technique that has become well-established for water level monitoring. While GNSS-IR previously been employed monitoring properties of lake ice and sea ice, it not applied river ice. This paper presents results from breakup at three sites in Canada. data was compared to co-located time-lapse camera imagery found signal sensitive periods where there rough or broken view the sensor. Using...