A5075521780- Hydrology and Watershed Management Studies
- Cryospheric studies and observations
- Hydrology and Sediment Transport Processes
- Soil erosion and sediment transport
- Soil and Water Nutrient Dynamics
- Climate change and permafrost
- Plant Water Relations and Carbon Dynamics
- Soil and Unsaturated Flow
- Flood Risk Assessment and Management
- Groundwater flow and contamination studies
- Landslides and related hazards
- Peatlands and Wetlands Ecology
- Groundwater and Isotope Geochemistry
- Tree-ring climate responses
- Geophysical and Geoelectrical Methods
- Climate variability and models
- Urban Stormwater Management Solutions
- Fire effects on ecosystems
- Hydrology and Drought Analysis
- Smart Materials for Construction
- Pesticide and Herbicide Environmental Studies
- Fish Ecology and Management Studies
- Groundwater and Watershed Analysis
- Marine and coastal ecosystems
- Water Quality and Pollution Assessment
Trent University
2015-2024
Université de Moncton
2019-2021
University of Winnipeg
2019-2021
Ontario Forest Research Institute
2019-2021
Ministry of Natural Resources and Forestry
2019-2021
University of British Columbia
2019-2021
Natural Resources Canada
2008-2021
University of Toronto
2019-2021
Swedish University of Agricultural Sciences
2016
Uppsala University
2016
Environmental isotopes, such as oxygen-18 and deuterium, have been used increasingly to separate stormflow into its event pre-event components in order elucidate the sources, pathways residence times of water drainage basins. The majority isotopic hydrograph separations indicate that supplies at least 50% streamflow peak discharge small- medium-sized basins; however, there is no consensus means by which rapidly exported from hydrological processes invoked explain observed response rainfall...
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 We compared stable isotopes of water in plant stem (xylem) and soil collected over a complete growing season from five well‐known long‐term study sites northern/cold regions. These spanned decreasing temperature gradient Bruntland Burn (Scotland), Dorset (Canadian Shield), Dry Creek (USA), Krycklan (Sweden), to Wolf (northern Canada). Xylem was isotopically depleted waters, most notably for deuterium. The degree which potential sources could explain the isotopic composition xylem...
Coupling of vertical and lateral preferential flow paths was examined on a forested slope with thin soil cover during artificial irrigations. Point‐scale infiltration measured at sites differing macroporosities using profiles time domain reflectometry probes suction samplers. Lateral fluxes water solutes from the were determined through trench. Sites greater tended to exhibit flow, while relatively small largely by propagation well defined wetting front profile. Generation large increased...
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 combined a conceptual rainfall‐runoff model and input–output relationships of stable isotopes to understand ecohydrological influences on hydrological partitioning in snow‐influenced northern catchments. Six sites Sweden (Krycklan), Canada (Wolf Creek; Baker Dorset), Scotland (Girnock) the USA (Dry Creek) span moisture energy gradients found at high latitudes. A meta‐analysis was carried out using Hydrologiska Byråns Vattenbalansavdelning (HBV) estimate main storage changes...
Abstract Trees whose branches slope towards or away from the bole differ in spatial pattern of water delivery to soil surface beneath their canopies. This study examines implications these differences for recharge below 1 m depth a managed forest on Oak Ridges Moraine southern Ontario. Throughfall and vertical profiles content at varying distances boles sugar maple two red pines differing ages (36 57 years old) were measured during rainfall inputs summer 2009 spring/early 2010. Stemflow...
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 Rising dissolved organic carbon (DOC) concentrations observed at a number of sites in the northern hemisphere over recent decades are subject much debate, and reports suggest link between DOC patterns surface waters changes sulphate (SO 4 ) related to droughts or deposition. In order investigate potential influence SO concentration on south‐central Ontario, we used long‐term (1980–2001) stream monitoring data from wetland‐dominated catchment (Plastic Lake‐1 subcatchment, PC1) that...
Abstract This paper provides an overview of low flow characteristics for six regions Canada: the Arctic; Mountains; Prairies; southern Ontario; Canadian Shield and Atlantic. Processes that influence flows are contrasted between examined. Data from a common analysis period 51 gauging stations used to evaluate duration curves explore relationship drainage area. The results reveal diversity processes influencing illustrate important regional differences in impacts associated with flows. La...
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)...
The effects of forest disturbance on streamflow from small (<10 km 2 ) basins have been well documented; however, implications such for relatively large rivers in the Canadian boreal are unclear. Landsat imagery was used to determine changes type, amount, and location northeastern Ontario between 1985 1990. These were compared with responses medium- large-scale region. Harvesting dominated disturbance, total as 1990 ranged 25% basin area northwest part region 5% southeast. There limited...
The effects of forest disturbance on streamflow from small (<10 km 2 ) basins have been well documented; however, implications such for relatively large rivers in the Canadian boreal are unclear. Landsat imagery was used to determine changes type, amount, and location northeastern Ontario between 1985 1990. These were compared with responses medium- large-scale region. Harvesting dominated disturbance, total as 1990 ranged 25% basin area northwest part region 5% southeast. There limited...