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Riparian vegetation recovery in the blast and airfall tephra zones of Mount St. Helens, Washington

Creator:: Kiilsgaard, Christen W.
Abstract:: Riparian vegetation patterns within the blast, downstream of blast, and airfall tephra zones of Mount St. Helens are related to initial and secondary volcanic disturbance, post-eruption fluvial landforms, channel geometry, and streamflow characteristics. Vegetation patterns were determined from species presence observed on transects across landforms developed along the streams. Distinct...
Resource Type:: Masters Thesis

Meeting of the magmas : the evolutionary history of the Kalama Eruptive Period, Mount St. Helens, Washington

Creator:: Lieuallen, Athena Erin
Abstract:: Comprehension of eruptive histories is critical in understanding the evolution of magmatic systems at arc volcanoes and may supply evidence to the petrogenesis of intermediate and evolved magmas. Within the 300 ka eruptive history of Mount St. Helens, Washington, the Kalama Eruptive Period, 1479- ~1750 CE was bracketed by interludes...
Resource Type:: Masters Thesis
Full Text:: of the Magmas: the Evolutionary History of the Kalama Eruptive Period, Mount St. Helens, Washington

Effects of Mount St. Helens' ash on broiler chicken respiratory and digestive tracts, growth, feed efficiency and poultry house environment

Creator:: Bland, Mark
Resource Type:: Masters Thesis
Full Text:: Effects of Mount St. Helens' ash on broiler chicken

Volcanism, Climate Change. and Prehistoric Cultural Succession in Southern Washington and North-Central Idaho

Creator:: Davis, Loren G. (Loren Gerald), 1969-
Abstract:: The cultural influence of volcanic eruptions has been emphasized in the archaeological literature. However, the larger effects that Mount St. Helens volcanic eruptions had upon prehistoric populations in the Pacific Northwest is not understood. This thesis asks questions of the archaeological and paleoenvironmental record of the Pacific Northwest to assess...
Resource Type:: Masters Thesis

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Creator:: Johnson, Mark E.
Abstract:: The morphology, genesis, and classification of soils forming in multiple tephra deposits of recent age from Mt. St. Helens volcano in southwestern Washington Cascade Mountains was studied. Soils which occupied well drained and poorly drained positions on the landscape were characterized according to their morphology and the results of analyses...
Resource Type:: Masters Thesis

Sediment routing in a small watershed in the blast zone at Mount St. Helens, Washington

Creator:: Smith, Richard D. (Richard Dean), 1950-
Abstract:: A descriptive model of the routing of sediment that was delivered to the study area by the 1980 eruptions of Mount St. Helens has been developed. On hillslopes this sediment was distributed among three major storage compartments: 1) the tephra profile, 2) primary storage, and 3) secondary storage. The most...
Resource Type:: Masters Thesis
Full Text:: Mount St. Helens, Washington AN ABSTRACT OF THE THESIS OF Richard D. Smith for the degree of Master

Post-eruption species selection and planting trials for reforestation of sites near Mount St. Helens

Creator:: Logan, Sheila E.
Abstract:: The 1980 eruptions of Mount St. Helens damaged or destroyed vegetation on more than 66,100 hectares (270,000 acres) within the Gifford Pinchot National Forest. The effects of the eruption on planting sites and seedling performance were unknown. Regeneration of "cut over" lands near Mount St. Helens has historically been limited...
Resource Type:: Masters Thesis

Revegetation-microhabitat relations in the blast zone of Mount St. Helens

Creator:: Gallant, Alisa L.
Abstract:: The Mount St. Helens eruption of May 18, 1980, offered an excellent setting for evaluating early response of ecosystems to disturbance. Prior to the eruption, the area was densely forested with fir, hemlock, and Douglas-fir, and various understory species. During the course of the eruption, hillslopes within a 180 degree...
Resource Type:: Masters Thesis
Full Text:: Mount St. Helens AN ABSTRACT OF THE THESIS OF Alisa L. Gallant for the degree of Master of Science in

Conifer establishment from seed on tephra deposits from the 1980 eruptions of Mount St. Helens, Washington

Creator:: Frenzen, Peter M.
Abstract:: Information concerning the factors controlling seedling establishment on tephra deposits (airfall volcanic ejecta) is limited. The establishment and growth of six coniferous species, Abies amabills (Dougl.) Forbes (Pacific silver fir), A. procera Rehd. (noble fir), Pinus monticola Dougl. (western white pine), P. Contorta Dougl. (lodgepole pine), Pseudotsuga menziesii (Mirb.) Franco...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Riparian vegetation recovery in the blast and airfall tephra zones of Mount St. Helens, Washington

Meeting of the magmas : the evolutionary history of the Kalama Eruptive Period, Mount St. Helens, Washington

Effects of Mount St. Helens' ash on broiler chicken respiratory and digestive tracts, growth, feed efficiency and poultry house environment

Volcanism, Climate Change. and Prehistoric Cultural Succession in Southern Washington and North-Central Idaho

Morphology, genesis, and classification of soils forming in recent age tephra deposits from Mt. St. Helens volcano

Sediment routing in a small watershed in the blast zone at Mount St. Helens, Washington

Post-eruption species selection and planting trials for reforestation of sites near Mount St. Helens

Revegetation-microhabitat relations in the blast zone of Mount St. Helens

Conifer establishment from seed on tephra deposits from the 1980 eruptions of Mount St. Helens, Washington

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