Index Catalog // ScholarsArchive@OSU

Creator:: Highland, Steven A.
Abstract:: Montane meadows in the western Cascades of Oregon occupy approximately 5% of the landscape, but contribute greatly to the region's biodiversity. Western Cascades meadows are dynamic parts of the landscape and have contracted by over 50% in the past two hundred years in the HJ Andrews Experimental Forest (hereafter Andrews...
Resource Type:: Dissertation
Full Text:: McKenzie River watershed. The high ridges of the HJ Andrews Experimental Forest were analyzed using air

Creator:: Littlefield, Sam, 1980-
Abstract:: Windthrow has been studied extensively as a cause of mortality and as a landscape disturbance agent in temperate forests throughout the United States. The effects of windthrow mortality on stand species composition and structure, forest regeneration and seral development have been well described at the site (e.g. single gap) and...
Resource Type:: Masters Thesis

Creator:: Jones, Katherine E.
Abstract:: Montane meadows in the Cascade Range of Oregon have been declining due to tree establishment since records began. Montane meadow complexes in the H.J. Andrews Experimental Forest shrank by 60 to 75% from 1949 to 2005, but fine scale temporal and spatial processes of tree establishment in these meadows are...
Resource Type:: Masters Thesis
Full Text:: at the H.J. Andrews Experimental Forest fosters an environment that is near impossible to leave

Creator:: Sheehy, Samantha
Abstract:: Although the Pacific Northwest has the least proportion of non-native plant species in relation to other regions of North America, exotic species continue to spread into mountainous areas, including the Cascade Range. In a forested landscape, road networks can act as corridors for exotic plant dispersal and establishment, helping species...
Resource Type:: Masters Thesis
Full Text:: the H.J. Andrews Experimental Forest, located in the Cascade Range, Oregon. The H.J. Andrews is an

Creator:: Watterson, Nicholas
Abstract:: This project explores mechanisms governing the invasion of fluvial systems by two contrasting exotic species in stream networks of steep, relatively remote forested landscapes of western Oregon. This research addresses hypotheses relating limitations of seed source locations, seed transport processes, and sink availability to the distributions of scotch broom (Cytisus...
Resource Type:: Masters Thesis

Creator:: Smoluk, Alexis
Abstract:: Spatial variation in the diet of the northern spotted owl (Strix occidentalis caurina) influences owl home ranges, and understanding this relationship will aid managers in forest management prescriptions that influence spotted owl recovery. This study describes the spatial variation in owl diet based on 4183 prey collected at 114 owl...
Resource Type:: Masters Thesis
Full Text:: , not least of which being the day she plucked me out of the HJ Andrews experimental forest to become

Creator:: Perry, Timothy D.
Abstract:: This study quantified the magnitude and timing of summer streamflow deficits in paired-watershed experiments in the Cascade Range of Oregon where mature and old-growth conifer forests were subjected to clearcutting, patch cutting, and overstory thinning treatments in the 1960s and 1970s. Hydrologic effects of clearcutting, small-patch cutting, and overstory thinning...
Resource Type:: Masters Thesis
Full Text:: emerging summertime water deficits in several WS at the H.J. Andrews Experimental Forest, Oregon

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