Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
Articles 1 - 4 of 4
Full-Text Articles in Physical Sciences and Mathematics
Sedimentology Of Pleistocene Outwash And Glaciolacustrine Deposits In East-Central Wisconsin, Carrie Czech
Sedimentology Of Pleistocene Outwash And Glaciolacustrine Deposits In East-Central Wisconsin, Carrie Czech
Theses and Dissertations
The Green Bay Lobe was one of several lobes of the Laurentide Ice Sheet (LIS) to enter Wisconsin during the recent Wisconsinan glaciation. Kewaunee Formation deposits in the Tower Hill sand and gravel pit near the city of De Pere in east-central Wisconsin were previously interpreted to be the result of an ice-contact delta, prograding into former glacial Lake Oshkosh (Mickelson and Mode, 2007). Estimates of water depth in the lake had been poorly constrained as they had been estimated by the elevation of the outlet channels and a few scattered, poorly-preserved strandline deposits (Hooyer, 2007). Reexamination of these Kewaunee …
Giant Beaver (Castoroides) Palaeoecology Inferred From Stable Isotopes, Tessa Plint
Giant Beaver (Castoroides) Palaeoecology Inferred From Stable Isotopes, Tessa Plint
Electronic Thesis and Dissertation Repository
Stable isotope analysis was used to explore unresolved questions about the palaeoecology of the extinct Pleistocene giant beaver (Castoroides). The δ13C, δ15N, and δ18O of bone collagen and structural carbonate from enamel served as proxies for palaeodiet and palaeoclimate. A new baseline for freshwater and terrestrial plant δ13C and δ15N was utilized in a mixing model (SIAR) to assess rodent feeding niche. SIAR analysis indicated that Castoroides’ consumed a diet of predominantly macrophytes, making them reliant on wetland habitat for food. Based on isotopic data for potential …
Description, Taphonomy, And Paleoecology Of The Late Pleistocene Peccaries (Artiodactyla: Tayassuidae) From Bat Cave, Pulaski County, Missouri, Aaron L. Woodruff
Description, Taphonomy, And Paleoecology Of The Late Pleistocene Peccaries (Artiodactyla: Tayassuidae) From Bat Cave, Pulaski County, Missouri, Aaron L. Woodruff
Electronic Theses and Dissertations
The late Pleistocene faunal assemblage from Bat Cave, central Ozarks, Missouri provides an opportunity to assess specific aspects of behavior, ecology, and ontogeny of the extinct peccary Platygonus compressus. All identifiable elements referable to this taxon were catalogued and examined, and a minimum number of individuals of 70 was determined for the sample. The presence of distinct, non-overlapping age groups suggests that P. compressus utilized Bat Cave on a seasonal basis. A predator-prey relationship with Canis dirus, the second most abundant vertebrate from the Bat Cave site, is also described in this study. Damage patterns suggest that the …
Reframing The Mammoth Steppe: Examining Mammoth Steppe Ecology Using Carbon And Nitrogen Isotopic Compositions Of Megafauna Collagen, Rachel E. Schwartz-Narbonne
Reframing The Mammoth Steppe: Examining Mammoth Steppe Ecology Using Carbon And Nitrogen Isotopic Compositions Of Megafauna Collagen, Rachel E. Schwartz-Narbonne
Electronic Thesis and Dissertation Repository
The Pleistocene mammoth steppe was a vast biome that stretched from northwestern Europe to central Canada. A diverse set of megaherbivore and megacarnivore species lived within this biome and there was significant ecosystem faunal and floral homogeneity. At the end of the Pleistocene, this biome disappeared, with the extinction or extirpation of many of the megafaunal species that inhabited it. This thesis reconstructs the ecology of the mammoth steppe using the isotopic compositions of carbon and nitrogen from megafaunal collagen. The reconstruction is done at a variety of ecological scales, beginning with individual animal- and season-specific isotopic studies of antlers, …