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Physical and Environmental Geography Commons™
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Full-Text Articles in Physical and Environmental Geography
South Bend And Ridge Pine 2: Fraternal Twins, Gabryell Kurtzrock Belyea
South Bend And Ridge Pine 2: Fraternal Twins, Gabryell Kurtzrock Belyea
Electronic Thesis and Dissertation Repository
The Ridge Pine 2 and South Bend sites lie within four kilometres of each other, both date to the late Middle Archaic period (ca. 5500-4500 before present), and both contain significant amounts of nonlocal chert. This exploitation of nonlocal chert occurred despite the close proximity of the Kettle Point chert outcrop to both sites. Notwithstanding their similarities, the two sites differ dramatically. From the raw material breakdown to projectile point types the two assemblages are quite different. These differences raise questions surrounding the chert procurement strategy employed by the groups at Ridge Pine 2 and South Bend. In order to …
Response Of Stream Biofilm Function To Pulsed Increases In Velocity And Nutrients: An Artificial Stream Study, Chris Lucas
Response Of Stream Biofilm Function To Pulsed Increases In Velocity And Nutrients: An Artificial Stream Study, Chris Lucas
Electronic Thesis and Dissertation Repository
Pulsed increases in flow within streams alter abiotic conditions such as nutrient concentrations and velocity which can influence the function of stream ecology, including biofilms. A 31-day artificial stream experiment at Thames River Experimental Stream Sciences (TRESS) Centre, London, Ontario, assessed the response of stream biofilm function (decomposition, primary production, community respiration) to individual and combined increases in velocity and phosphorus associated with a 48-hour hydrological pulse event. There was some evidence of an interactive subsidy effect of increased phosphorus and velocity on algal productivity. Decomposition increased as a result of increased phosphorus but there was no synergistic interaction of …