A5046365926- Marine and coastal ecosystems
- Marine and coastal plant biology
- Coastal wetland ecosystem dynamics
- Remote Sensing and LiDAR Applications
- Soil erosion and sediment transport
- Remote Sensing in Agriculture
- Marine Biology and Ecology Research
- Flood Risk Assessment and Management
- Water Quality Monitoring Technologies
- Coral and Marine Ecosystems Studies
- Marine and fisheries research
- Automated Road and Building Extraction
- Land Use and Ecosystem Services
- Water Quality Monitoring and Analysis
- Coastal and Marine Management
- Atmospheric and Environmental Gas Dynamics
- Isotope Analysis in Ecology
- Geochemistry and Geologic Mapping
- Groundwater and Watershed Analysis
- Oceanographic and Atmospheric Processes
- Peatlands and Wetlands Ecology
- Microbial Community Ecology and Physiology
- Fish biology, ecology, and behavior
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Hydrology and Watershed Management Studies
University of Victoria
2016-2025
National Institute for Space Research
1993-2007
Carleton University
1998
The Brazilian Pantanal is a large continuous tropical wetland with biodiversity and many threatened habitats. interplay between the distribution of vegetation, hydrology, climate geomorphology nourishes sustains diversity flora fauna in this wetland, but it poorly understood at scale entire Pantanal. This study uses multi-temporal L-band ALOS/PALSAR C-band RADARSAT-2 data to map ecosystems create spatial-temporal maps flood dynamics First, an understanding backscattering characteristics...
The impacts of local-scale temperatures and winds on bull kelp ( Nereocystis luetkeana ) vary along a coastal gradient, while also being influenced by corresponding global-scale oceanic conditions. Around Vancouver Island the Gulf Islands, BC, Canada, floating canopies were mapped using high-resolution imagery from 2005 to 2022, whereas largest bed area was with medium-resolution spanning 1972 2022. In order understand spatial patterns resilience, abiotic characteristics used organize...
Kelp forests are among the most abundant coastal marine habitats but vulnerable to climate change. The Northeast Pacific has experienced recent large-scale changes in kelp abundance and distribution, little is known about north of British Columbia (BC)-Washington border. Here, we assessed whether how floating canopy ( Macrocystis pyrifera, Nereocystis luetkean a ) distributions have changed decades along extensive coast BC. We assembled analysed available distributional data, comparing...
Abstract There is growing interest in the use of Unoccupied Aerial Systems ( UAS ) for mapping and monitoring seagrass habitats. provide flexibility with timing imagery capture, are relatively inexpensive, obtain very high spatial resolution compared to acquired from sensors mounted on satellite or piloted aircraft. However, research date has focused applications exposed intertidal areas clear tropical waters. In contrast, submerged meadows temperate regions subject cloud cover water column...
A major limitation for remote sensing analyses of oceanographic variables is loss spatial data. The Data INterpolating Empirical Orthogonal Functions (DINEOF) method has demonstrated effectiveness filling gaps in datasets, making them more easily implemented further applications. However, the and temporal coverage input image dataset can heavily impact outcomes using this and, thus, metrics derived from these such as phytoplankton bloom phenology. In study, we used a three-year time series...
Land cover changes (LCC) affect the water balance (WB), changing surface runoff (SurfQ), evapotranspiration (ET), groundwater (GW) regimes, and streamflow (Q). The Tapajós Basin (southeastern Amazon) has experienced LCC over last 40 years, with increasing rates projected for near future. Several studies have addressed effects of climate on region’s hydrology, but few explored its hydrological regime. In this study, Soil Water Assessment Tool (SWAT) was applied to model hydrology Upper...
In the face of global ocean warming, monitoring essential climate variables from space is necessary for understanding regional trends in dynamics and their subsequent impacts on ecosystem health. Analysis Ready Data (ARD), being preprocessed satellite-derived products such as Sea Surface Temperature (SST), allow easy synoptic analysis temperature conditions given consideration biases within a dynamic range. This especially true SST retrieval thermally complex coastal zones. this study, we...
A field intercomparison was conducted at the Acqua Alta Oceanographic Tower (AAOT) in northern Adriatic Sea, from 9 to 19 July 2018 assess differences accuracy of in- and above-water radiometer measurements used for validation ocean colour products. Ten measurement systems were compared. Prior intercomparison, absolute radiometric calibration all sensors carried out using same standards methods reference laboratory. Measurements performed under clear sky conditions, relatively low sun zenith...
The planktonic diversity throughout the oceans is vital to ecosystem functioning and linked environmental change. Plankton monitoring tools have advanced considerably with high-throughput in-situ digital cameras genomic sequencing, opening new challenges for high-frequency observations of community composition, structure, species discovery. Here, we combine multi-marker metabarcoding based on nuclear 18S (V4) plastidial 16S (V4-V5) rRNA gene amplicons a in-line holographic microscope provide...
The Strait of Georgia, Canada, is an important region for numerous commercially and culturally species (e.g., herring, salmon, orcas), yet little known about the links between lower trophic level (e.g. phytoplankton zooplankton) phenology due to historical sampling gaps. Here, we present fourteen years (2003-2016) data linking interannual variability in zooplankton Central BC. Satellite-derived chlorophyll a (Chl ) were used calculate spring bloom dynamics (bloom initiation, intensity,...
Radarsat and JERS-1 imagery were used for mapping zonation of vegetation communities in the Amazon floodplain. Imagery analysis indicates that at periods minimum water level backscattering values both C L bands are lowest as rises, so do values. exhibits a larger dynamic range response to ground cover two extremes (10 dB) compared imagery. The differences from different allowed use region-based classification produced seasonal maps with accuracies higher than 95% vegetated areas These...
There is an increasing need for satellite-derived accurate chlorophyll-a concentration (chla) products to improve fisheries management in coastal regions. However, the methods used derive these have be evaluated, so associated uncertainties are known. The performance of three atmospheric correction methods, near infrared (NIR), shortwave (SWIR), and Management Unit North Seas Mathematical Models with additional modification (MUMM + SWIR), derived chla based on Moderate Resolution Imaging...