A5031674684- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Marine Biology and Ecology Research
- Geological formations and processes
- Geological and Geophysical Studies
- Paleontology and Evolutionary Biology
- Geological Studies and Exploration
- Astro and Planetary Science
- Marine and coastal plant biology
- Geochemistry and Elemental Analysis
- Marine and environmental studies
- Agriculture and Biological Studies
- Phytoplasmas and Hemiptera pathogens
- Hydrology and Sediment Transport Processes
- Environmental and Biological Research in Conflict Zones
- Evolution and Paleontology Studies
- Geological Modeling and Analysis
- Body Image and Dysmorphia Studies
- Radioactive element chemistry and processing
- Marine and fisheries research
- Pacific and Southeast Asian Studies
- Mobile Learning in Education
- Diverse Educational Innovations Studies
- Maritime Transport Emissions and Efficiency
- Saffron Plant Research Studies
McGill University
2023-2024
University of Toronto
2019-2024
McMaster University
2014-2023
Pyrogenesis (Canada)
2023
The Ohio State University
2015
The Ediacaran–Cambrian transition marks one of the most important geobiological revolutions in Earth History, including multiple waves evolutionary radiation and successive episodes apparent mass extinction. Among proposed drivers these events (in particular extinction latest Neoproterozoic 'Ediacara biota') is emergence complex metazoans their associated behaviors. Many are thought to have crucial impacts on both resource availability character physical environment – 'ecosystem engineering'...
Reconstructing Precambrian eukaryotic paleoecology is pivotal to understanding the origins of modern, animal-dominated biosphere. Here, we combine new fossil data from southern Namibia with computational fluid dynamics (CFD) test between competing feeding models for Ediacaran taxon Ernietta. In addition, perform simulations multiple individuals, allowing us analyze hydrodynamics living communities. We show that Ernietta lived gregariously, forming shallow marine aggregations in latest...
Abstract The Nasep and Huns members of the Urusis Formation (Nama Group), southern Namibia, preserve some most diverse trace-fossil assemblages known from latest Ediacaran worldwide, including potentially world's oldest “complex” vertical sediment-penetrating burrows. These sediments record relatively communities bilaterian metazoans existing before base Cambrian an increase in intensity metazoan ecosystem engineering behaviors that could eventually produce profound changes character...
Abstract Molecular phylogenetic data suggest that photosynthetic eukaryotes first evolved in freshwater environments the early Proterozoic and diversified into marine by Tonian Period, but algal evolution is poorly reflected fossil record. Here, we report newly discovered, millimeter- to centimeter-scale macrofossils from outer-shelf facies of ca. 950–900 Ma (Re-Os minimum age constraint = 898 ± 68 Ma) Dolores Creek Formation Wernecke Mountains, northwestern Canada. These fossils, variably...
Tonian (ca. 1000-720 Ma) marine environments are hypothesised to have experienced major redox changes coinciding with the evolution and diversification of multicellular eukaryotes. In particular, earliest stratigraphic record features colonisation benthic habitats by macroscopic algae, which would been powerful ecosystem engineers that contributed oxygenation oceans reorganisation biogeochemical cycles. However, paleoredox context this expansion macroalgal in nearshore remains uncertain due...
Abstract Proterozoic eukaryotic macroalgae are difficult to interpret because morphological details required for proper phylogenetic studies rarely preserved. This is especially true of morphologically simple organisms consisting tubes, ribbons, or spheres that commonly found in a wide array bacteria, plants, and even animals. Previous reports exceptionally preserved Tonian (ca. 950−900 Ma) fossils from the Dolores Creek Formation Northwestern Canada feature enough evidence support green...
Ernietta plateauensis is a semi-infaunal macroscopic eukaryote of unknown affinities common in latest Ediacaran (∼548–539 Ma) shallow marine settings Namibia. The discovery in-situ assemblages has demonstrated that these organisms lived aggregated populations, while studies employing computational fluid dynamics (CFD) modeling have supported the hypothesis were likely behaving as gregarious suspension feeders, analogous to many extant invertebrate phyla present-day environments. Careful...
Abstract The rise of eukaryotic macroalgae in the late Mesoproterozoic to early Neoproterozoic was a critical development Earth’s history that triggered dramatic changes biogeochemical cycles and benthic habitats, ultimately resulting ecosystems habitable animals. However, evidence diversification expansion is limited by biased fossil record. Non-mineralizing organisms are rarely preserved, occurring only exceptional environments favor fossilization. Investigating taphonomy well-preserved...
Drumlins, despite being well studied, are still incredibly enigmatic in terms of their formation processes. Theories on origin vary widely, and the evidence presented this study seeks to assist debate. To support an erosional theory for drumlins, large volumes sediment would have undergone transport deposition. The volume that eroded from part Peterborough Drumlin Field Simcoe County was calculated using two methods a GIS. limitations both geological composition potential sinks were...
As geoscientists, we must prioritize improving our ability to communicate science the public. Effective geoscience communication enables communities understand how geological processes have shaped planet and make informed decisions about Earth’s future. However, research outputs traditionally been published in peer-reviewed journals presented at academic conferences. Consequently, essential information local geology is rarely available accessible, open access, engaging formats. Here, propose...
The disciplines of geology and physical geography often rely on experiential learning real-world observations, like those offered field trips, to share knowledge engage students. During the shift online teaching during COVID-19 pandemic, in higher education had quickly embrace innovative technologies (e.g., handheld LiDAR scanners, 3D scanner apps, affordable drones, 360-cameras) applications such as ArcGIS StoryMaps simulate these investigations.  Here, we are applying what learned...
An intensive single season pilot study was conducted with the digger crayfish, Fallicambarus fodiens (Cottle, 1863) to evaluate relationships between burrow and wetland attributes.Factor Analysis identified significant factors correlated placement, individual presence, type frequency of activity.Factor 1 explained 36.89% variance associated hydric type, percent soil moisture, fine substrate grain sizes, habitat condition, while factor 2 14.78% based on large particle sizes.A difference...
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