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A new model for the formation of Crater Lake Caldera, Oregon

Creator:: Lidstrom, John Walter
Abstract:: During the Pleistocene, an andesitic volcano named Mount Mazama grew to a probable elevation of 3000 meters in south- central Oregon. Near the end of the Pleistocene, three diverse magma types appeared in the eruptive products associated with Mount Mazama: l)High-alumina basaltic andesite magma associated with an early plateau and...
Resource Type:: Dissertation

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

Creator:: Seyer, Susan C.
Resource Type:: Masters Thesis
Full Text:: : VEGETATIVE ECOLOGY OF A MONTANE MIRE, CRATER LAKE NATIONAL PARK, OREGON Abstract approved: Jerry F

An investigation into the comparative utility of color infrared aerial photography and LANDSAT data for detailed surface cover type mapping within Crater Lake National Park, Oregon

Creator:: Walsh, Stephen Joseph, 1951-
Abstract:: The identification and mapping of surface cover types within Crater Lake National Park, Oregon, has been effectively completed through the utilization of LANDSAT digital data and NASA U-2 color infrared aerial photography. Classification of LANDSAT data for surface cover type identification and mapping was accomplished through use of the Interactive...
Resource Type:: Dissertation

Vegetation and fire history of a Ponderosa pine-white fir forest in Crater Lake National Park

Creator:: McNeil, Robert Curlan
Resource Type:: Masters Thesis
Full Text:: AND FIRE HISTORY OF A PONDEROSA PINE- WHITE FIR FOREST IN CRATER LAKE NATIONAL PARK Abstract

The vegetation dynamics of Pinus contorta forest, Crater Lake National Park, Oregon

Creator:: Zeigler, Robert S.
Abstract:: This study describes the soils, vegetation and age structure of the Pinus contorta forests of Crater Lake National Park. Growth rates of P. contorta, and levels of infection and impact of dwarf mistletoe (Arceuthobium americanu1r) on growth of P. contorta individuals are compared among communities. Vegetation description is based on...
Resource Type:: Masters Thesis

Dispersed winter recreation use patterns and visitor attitudes at Crater Lake - Diamond Lake, Oregon

Creator:: Thompson, Terry Jo
Abstract:: Winter recreation has increased rapidly in the Crater Lake - Diamond Lake area of Oregon in recent years. Park and forest managers are concerned about existing and potential impacts of the recreationists on the resources and other recreationists. The purpose of this study was to describe the nature and extent...
Resource Type:: Masters Thesis

Bacteria-phosphate interactions in Upper Klamath Lake sediments

Creator:: Harrison, Michael John
Abstract:: Interactions between sediment bacteria and available phosphate necessary for algal production in a eutrophic lake were studied. Twenty percent of the organisms isolated solubilized phosphate forms such as CaHPO₄, Ca₃(PO₄)₂, FePO₄, Mg₃(PO₄)₂ and Al₂(PO₄)₂. Solubilization of phosphates occurred under conditions of aerobic growth. Upon quantitative analysis, some isolates were capable...
Resource Type:: Masters Thesis
Full Text:: drainage and another large lake, Agency Lake. No appreciable amounts of sewage or industrial wastes are

Vitamin B₁₂ production and depletion in a naturally eutrophic lake

Creator:: Gillespie, P. A.
Abstract:: The vitamin B₁₂ concentrations in both the water and sediments of Klamath Lake were found to vary significantly during a one-year period. The patterns of B₁₂ distribution were remarkably similar among the three main sites. In all cases there was an extremely sharp gradation in concentration in relation to depth...
Resource Type:: Dissertation
Full Text:: from Klamath Lake water and sediments 20 were found capable of producing 50 ilp,g or more B 12/m1 of

1971 Sand Lake Estuary Resource Use Study

Creator:: Gaumer, Tom, Demory, Darrell, and Osis, Laimons
Abstract:: In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
Resource Type:: Technical Report

Natural resources of Sand Lake Estuary

Creator:: Kreag, Rebecca A., Oregon. Dept. of Fish and Wildlife. Research and Development Section, and Oregon Land Conservation and Development Commission
Abstract:: This report is one of a series prepared by the Oregon Department of Fish and Wildlife (ODFW) which summarizes the physical and biological data for selected Oregon estuaries. The reports are intended to assist coastal planners and resource managers in Oregon in fulfilling the inventory and comprehensive plan requirements of...
Resource Type:: Technical Report

ScholarsArchive@OSU

A new model for the formation of Crater Lake Caldera, Oregon

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

An investigation into the comparative utility of color infrared aerial photography and LANDSAT data for detailed surface cover type mapping within Crater Lake National Park, Oregon

Vegetation and fire history of a Ponderosa pine-white fir forest in Crater Lake National Park

The vegetation dynamics of Pinus contorta forest, Crater Lake National Park, Oregon

Dispersed winter recreation use patterns and visitor attitudes at Crater Lake - Diamond Lake, Oregon

Bacteria-phosphate interactions in Upper Klamath Lake sediments

Vitamin B₁₂ production and depletion in a naturally eutrophic lake

1971 Sand Lake Estuary Resource Use Study

Natural resources of Sand Lake Estuary

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