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Fluvial processes, beaver activity, and climate in the greater Yellowstone ecosystem and rock type control on hillslope morphology and soil development in the Sandia Mountains, New Mexico

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/20863

Fluvial processes, beaver activity, and climate in the greater Yellowstone ecosystem and rock type control on hillslope morphology and soil development in the Sandia Mountains, New Mexico

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dc.contributor.author Persico, Lyman
dc.date.accessioned 2012-07-05T21:50:18Z
dc.date.available 2012-07-05T21:50:18Z
dc.date.issued 2012-07-05
dc.date.submitted May 2012
dc.identifier.uri http://hdl.handle.net/1928/20863
dc.description.abstract This dissertation follows the hybrid format as defined by the University of New Mexico’s Office of Graduate Studies. The three chapters were written as manuscripts to be submitted to different peer-reviewed journals. Chapter 1 is submitted to the journal Earth Surface Processes and Landforms. Chapter 2 will be submitted to the journal Climatic Change soon after this dissertation is published. Chapter 3 is already published in the journal Quaternary Research (November, 2011). Chapter 1 explores differences between historical and natural variability in fluvial systems in the Greater Yellowstone Ecosystem. I used beaver-pond and other fluvial deposits as proxy records of beaver occupation to compare historical fluvial activity to that throughout the Holocene. The Holocene record prior to Euro-American activities provides a better indication of the natural range of variability in beaver-influenced small stream systems of the GYE. Chapter 2 focuses on how stream discharge on small streams in the GYE has varied in the 20th century and also during severe drought during the Medieval Climatic Anomaly. Using the Palmer Drought Severity Index as a proxy for summer stream discharge I have concluded that many small streams in the GYE turn ephemeral during the summer months of severe drought years. Chapter 3 explores the role of rock type in hillslope soil formation and slope morphology in the Sandia Mountains of New Mexico. Resistant rock types have a profound impact on slopes by increasing the amount of coarse colluvium that traps and preserves eolian material. Accretion of eolian material along these slopes limits runoff and prevents attainment of a steady-state balance between soil production and downslope transport. en_US
dc.subject Geomorphology en_US
dc.subject Climate Change en_US
dc.subject Drought en_US
dc.subject Castor canadensis en_US
dc.subject Greater Yellowstone Ecosystem en_US
dc.subject Fluvial Systems en_US
dc.subject Soil Geomorphology en_US
dc.subject Hillslope Processes en_US
dc.subject Soil Stratigraphy en_US
dc.subject Soil Production en_US
dc.subject Sandia Mountains en_US
dc.subject New Mexico en_US
dc.subject.lcsh Stream ecology--Yellowstone National park.
dc.subject.lcsh Beavers--Ecology--Yellowstone National Park.
dc.subject.lcsh Climatic changes--Yellowstone National Park.
dc.subject.lcsh Slopes (Soil mechanics)--New Mexico--Sandia Mountains.
dc.subject.lcsh Rock slopes--New Mexico--Sandia Mountains.
dc.title Fluvial processes, beaver activity, and climate in the greater Yellowstone ecosystem and rock type control on hillslope morphology and soil development in the Sandia Mountains, New Mexico en_US
dc.type Dissertation en_US
dc.description.degree Earth and Planetary Sciences en_US
dc.description.level Doctoral en_US
dc.description.department University of New Mexico. Dept. of Earth and Planetary Sciences en_US
dc.description.advisor Meyer, Grant
dc.description.committee-member McFadden, Leslie
dc.description.committee-member Weissmann, Gary
dc.description.committee-member Coonrod, Julia


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