A5071193536- Soil erosion and sediment transport
- Hydrology and Sediment Transport Processes
- Hydrology and Watershed Management Studies
- Soil and Water Nutrient Dynamics
- Geology and Paleoclimatology Research
- Heavy metals in environment
- Cryospheric studies and observations
- Geological formations and processes
- Fire effects on ecosystems
- Aeolian processes and effects
- Mine drainage and remediation techniques
- Radioactive contamination and transfer
- Landslides and related hazards
- Peatlands and Wetlands Ecology
- Soil Geostatistics and Mapping
- Isotope Analysis in Ecology
- Water Quality and Pollution Assessment
- Geochemistry and Geologic Mapping
- Groundwater and Isotope Geochemistry
- Urban Stormwater Management Solutions
- Tailings Management and Properties
- Climate change and permafrost
- Toxic Organic Pollutants Impact
- Radioactivity and Radon Measurements
- Fish Ecology and Management Studies
University of Northern British Columbia
2015-2024
University of Manitoba
2020-2022
Cranfield University
2003-2008
Natural Resources Institute
2006-2008
Netherlands Organisation for Applied Scientific Research
2008
University of Exeter
1996-2006
Eli Lilly (United States)
2006
Biotechnology and Biological Sciences Research Council
2004
Oklahoma State University
1985
Abstract Fine‐grained sediment is a natural and essential component of river systems plays major role in the hydrological, geomorphological ecological functioning rivers. In many areas world, level anthropogenic activity such that fine‐grained fluxes have been, or are being, modified at magnitude rate cause profound, sometimes irreversible, changes way function. This paper examines how has caused significant quantity quality within systems, using examples of: land use change New Zealand;...
Statistically verified composite fingerprints and a multivariate mixing model have been employed to establish the main sources of suspended sediment transported through lower, non-tidal reaches River Ouse one its tributaries, Wharfe, during period 1994–1997. In case samples collected from Ouse, load-weighted mean contributions uncultivated topsoil, cultivated topsoil channel bank were estimated be c. 25, 38 37%, respectively, while for Wharfe these contributed 70, 4 23%, respectively (c. 4%...
ABSTRACT A measure of soil P status in agricultural soils is generally required for assisting with prediction potential loss from catchments and assessing risk water quality. The objectives this paper are twofold: (i) investigating the status, distribution, variability, both spatially depth, two different first‐order catchments; (ii) determining variation concentration relation to catchment topography (quantified as “topographic index”) critical source areas (CSAs). measurements showed large...
This study examines the 1911–2010 variability and trends in annual streamflow at 139 sites across Fraser River Basin (FRB) of British Columbia (BC), Canada. The is largest Canadian waterway flowing to Pacific Ocean one world's greatest salmon rivers. Our analyses reveal high runoff rates low interannual alpine coastal rivers, most streams BC's interior. also rivers such as Adams, Chilko, Quesnel Stuart where principal runs occur. A trend analysis shows a spatially coherent signal with...
Abstract On 4 August 2014, a catastrophic breach of the Mount Polley mine tailings impoundment released ~25 M m 3 and water scoured an unknown quantity overburden into West Basin Quesnel Lake. We document Lake River observations for 2 months postspill. Breach inflows raised by 7.7 cm, equivalent to ~21 . The hypolimnion was modified immediately, exhibiting increased temperature (~5°C 6–7.5°C), conductivity (110 160 μS/cm), turbidity (<1 200–1000 nephelometric units (NTU)). Cooscillating...
Abstract Increasing complexity in human-environment interactions at multiple watershed scales presents major challenges to sediment source apportionment data acquisition and analysis. Herein, we present a step-change the application of Bayesian mixing models: Deconvolutional-MixSIAR (D-MIXSIAR) underpin sustainable management soil sediment. This new model approach allows users directly account for ‘structural hierarchy’ river basin terms sub-watershed distribution. It works by deconvoluting...
The accumulation of fallout radionuclides (FRNs) from nuclear weapons testing and accidents has been evaluated for over half a century in natural environments; however, until recently their distribution abundance within glaciers have poorly understood. Following series individual studies FRNs, specifically 137Cs, 241Am 210Pb, deposited on the surface glaciers, we now understand that cryoconite, material commonly found supraglacial environment, is highly efficient accumulator both artificial...