A5061681510- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Indigenous Studies and Ecology
- Environmental DNA in Biodiversity Studies
- Paleontology and Stratigraphy of Fossils
- Mollusks and Parasites Studies
- Evolution and Paleontology Studies
- Pleistocene-Era Hominins and Archaeology
University of Alberta
2021-2024
Brock University
2020-2021
Carleton University
2021
University of New Brunswick
2021
Abstract The temporal and spatial coarseness of megafaunal fossil records complicates attempts to disentangle the relative impacts climate change, ecosystem restructuring, human activities associated with Late Quaternary extinctions. Advances in extraction identification ancient DNA that was shed into environment preserved for millennia sediment now provides a way augment discontinuous palaeontological assemblages. Here, we present 30,000-year sedimentary (sedaDNA) record derived from...
Abstract A subfossil robber fly (Diptera: Asilidae) from the genus Lasiopogon Loew is reported a Beringian rodent, Arctic ground squirrel, Urocitellus parryii Richardson (Rodentia: Sciuridae), midden in Yukon Territory, Canada, dated to about 16 500 years old. This first asilid Quaternary-aged material and represents (sub)fossil for this subfamily Stichopogoninae.
Abstract The earliest eukaryotes recorded in continental environments are non-pollen palynomorphs (NPP) Mesoproterozoic strata, and NPP provide our best insights into lacustrine ecosystems through the Paleogene. They have been underexploited studies of younger lake sediments, either ignored or only qualitatively observed, because many destroyed by standard processing techniques for pollen embryophyte spores. palaeoenvironmental potential palynomorphs, with representatives from all eukaryotic...
To reconstruct a mastodon diet and provide snapshot view of environmental conditions in eastern Canada prior to the onset Wisconsinan glaciation, we analysed faunal floral components dung associated with juvenile remains from East Milford, Nova Scotia, dated 74.9 ± 5.0 ka cal BP. The diverse assemblage pollen, non-pollen palynomorphs, plant macrofossils, macroinvertebrate suggests that mastodons lived spruce-dominated mixed coniferous–deciduous forest strong boreal aspect interspersed...
Faunal remains from fossil arctic ground squirrel (Urocitellus parryii) middens provide insight into the composition of small mammal communities during late Pleistocene Yukon Territory. We evaluated skeletal present in 88 249 addition to fecal fourteen sites across Klondike goldfields. Two temporally distinct populations U. parryii were identified association with Dawson tephra (~30,000 yr B.P.) and Sheep Creek (~80,000 containing squirrels, voles (Microtus sp. M. longicaudus, miurus,...
<p>The multitude of factors alleged to have contributed the late Quaternary mass extinction some two-thirds Earth’s megafauna is complicated by coarse record buried macro-fossils. In response, micro-methods such as ancient DNA been increasingly able augment discontinuous palaeontological records investigate relative timings vegetation turnover versus megafaunal extirpations—all in absence biological tissues. Here, we present sedimentary data...