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Full-Text Articles in Geography
Spatiotemporal Variations In The Fire Regimes Of Whitebark Pine (Pinus Albicaulis Engelm.) Forests, Western Montana, Usa, And Their Management Implications, Evan Reed Larson
Spatiotemporal Variations In The Fire Regimes Of Whitebark Pine (Pinus Albicaulis Engelm.) Forests, Western Montana, Usa, And Their Management Implications, Evan Reed Larson
Masters Theses
Whitebark pine (Pinus albicaulis) is a long-lived tree species that exists throughout high elevation forest communities of western North America. It is the foundation of a diminishing ecosystem that supports Clark’s nutcrackers, red squirrels, grizzly bears, and black bears. The decline of this species is directly related to mortality from widespread mountain pine beetle outbreaks and infestation by the invasive white pine blister rust, and may be exacerbated by fire suppression. Prescribed fire will be a primary management tool in efforts to preserve whitebark pine on the landscape. My research used dendrochronology to investigate the fire history of …
Macroscopic Sedimentary Charcoal As A Proxy For Past Fire In Northwestern Costa Rica, Kyle James Schlachter
Macroscopic Sedimentary Charcoal As A Proxy For Past Fire In Northwestern Costa Rica, Kyle James Schlachter
Masters Theses
Proxy records of fire history offer valuable information on the role fire plays in an ecosystem. Such information can be used to understand the inter-relationships among fire, humans, and the environment. In the past, the forests of Costa Rica were thought to have been spared from significant pre-Columbian forest disturbance; however, paleoecological studies have shown that this notion is false. While the long-term human influence is now recognized in Costa Rica, the nature and extent of human effects in different regions remain poorly documented. Knowledge of pre-Columbian land uses in Costa Rica increases our understanding of the possible impacts of …
Environmental History At Laguna Yaguarú, Bolivia: Evidence From Pollen, Stable Carbon Isotopes, And An Embedded Mineral Facies, Zachary Paul Taylor
Environmental History At Laguna Yaguarú, Bolivia: Evidence From Pollen, Stable Carbon Isotopes, And An Embedded Mineral Facies, Zachary Paul Taylor
Masters Theses
Lowland eastern Bolivia is an important area for paleoenvironmental research because of its location near the climatically controlled boundary between the Amazon basin rain forest and the seasonally dry savannas to the south. I present a multiple proxy study from Laguna Yaguarú (15˚36’S, 63˚13’W, 195 m) a large (250 ha) lake located in the forest-savanna ecotone. A 2.4 m long core recovered in May 2003 spans approximately in the last 5000 years. Chronological control is based on excess 210Pb sedimentation in the uppermost sediments and three AMS dates on plant macrofossils in deeper sediments. I undertook pollen and microscopic charcoal …
The Transition To Neotraditionalism: The Case Of Huntersville, North Carolina, Kelley Ann Hall
The Transition To Neotraditionalism: The Case Of Huntersville, North Carolina, Kelley Ann Hall
Masters Theses
Troubled by the impacts associated with conventional development, the suburban community of Huntersville, North Carolina responded to metropolitan sprawl by adopting strict neotraditional development codes. Although a growing number of municipalities have begun to allow traditional neighborhood developments, few have completely reformed their zoning laws the way Huntersville did in the early 1990s. This thesis asked why Huntersville made the transition to neotraditionalism and what were the consequences of such a drastic step? A number of factors converged, including a rapid build-up of growth pressures and the timely arrival of new urbanist planning philosophies to spur Huntersville’s decision. Crucially, however, …