Index Catalog // ScholarsArchive@OSU

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

Creator:: Root, Heather T.
Abstract:: I focus on addressing knowledge gaps relating to management of cryptogams in Oregon's public lands in Pseudotsuga menziesii-Tsuga heterophylla forests on the west side of the Cascade Range and dryland steppe in the Cascade Range's rainshadow. While a great deal of research has illustrated the importance of late-successional forests for...
Resource Type:: Dissertation
Full Text:: a diversity of forest-dwelling organisms. Conventional thinning aims to optimize timber production

Epiphytic macrolichens in relation to forest management and topography in a western Oregon watershed

Creator:: Berryman, Shanti D.
Abstract:: This dissertation describes patterns in epiphytic macrolichen community composition, diversity, and biomass across various stand types in the Blue River watershed of western Oregon. It first examines the relative importance of ecological factors such as stand age, remnant tree retention, and topography to lichen communities in the landscape. It then...
Resource Type:: Dissertation
Full Text:: thank the H.J. Andrews Experimental Forest for use of their facilities during the field seasons. Doug

Shrub epiphyte communities in relation to stand management in forests of western Oregon

Creator:: Rosso, Abbey L.
Abstract:: This dissertation describes the epiphyte communities on tall shrubs in forests of western Oregon, with a focus on potential effects of management practices on these communities. Shrubs and other hardwoods have recently gained recognition as hotspots of diversity for epiphytes in young conifer forests of the region. Yet little is...
Resource Type:: Dissertation
Full Text:: with older shrub stems, as well as the overall epiphyte community. Local and regional diversity of

Tree mortality in midwestern oak-hickory forests : rates and processes

Creator:: Pedersen, Brian S.
Resource Type:: Dissertation
Full Text:: attribute of forest ecosystem function. This thesis focuses on background tree mortality, the mortality of

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Creator:: Hutten, Martin
Abstract:: This dissertation describes patterns in epiphytic macrolichen community composition along a nitrogen deposition gradient in the Yosemite region of the Sierra Nevada in California. This region is part of the largest federal air quality Class 1 designated air-shed in the western United States, covering the entire crest of the Sierra...
Resource Type:: Dissertation
Full Text:: woodlands west of Yosemite, and outside the study area, for instance in the ‘Giant Forest’ of Sequoia

Interactions between nitrogen, phosphorus, and molybdenum in forest soils and cyanobacterial lichen in the Oregon Coast Range

Creator:: Marks, Jade A.
Abstract:: Molybdenum is an essential component of biogeochemical cycling, most notably as a component of the nitrogenase enzyme used in biological nitrogen (N) fixation. While the important role of phosphorus (P) in limiting N fixation in ecosystems has been well documented, occurrence and prevalence of molybdenum (Mo) limitation is largely unknown....
Resource Type:: Masters Thesis
Full Text:: in Forest Soils and Cyanobacterial Lichens in the Oregon Coast Range AN ABSTRACT OF

Ecological thresholds, climate extremes, and tree species' distributions across the Pacific coastal United States

Creator:: Lintz, Heather E.
Abstract:: Species' distributions across the landscape are perhaps the least understood yet most conspicuous features of life on earth. Ecologists have long studied species' distributions; yet, many questions remain about why species occur where they do. Such questions persist largely because species' distributions are complex systems with challenging properties like non-linearity,...
Resource Type:: Dissertation
Full Text:: scatterplots of accuracy versus threshold strength and diagonality for CART, Random Forest, and NPMR. Each

Community gradients of Arctic macrolichens in relation to succession, grazing and the environment

Creator:: Holt, Emily A.
Abstract:: The purpose of this dissertation was to define macrolichen community gradients in relation to succession, grazing and the environment. First, species scores indicating when macrolichen species appeared following disturbance were derived from the literature. Weighted averaging of these data with a community matrix created a successional score for each sample...
Resource Type:: Dissertation
Full Text:: implications of climate and land use change on lichen communities. My grazing results may inform managers of

Lichen communities and caribou habitat in Denali National Park and Preserve, Alaska, USA

Creator:: Nelson, Peter R.
Abstract:: Lichens play many important roles in subarctic terrestrial ecosystems by fixing nitrogen, colonizing rock and gravel, stabilizing otherwise bare soil, adding significantly to vegetation biodiversity and serving as the primary food for caribou in the winter. In these chapters, I analyzed lichen community and ecological trait structure along environmental gradients,...
Resource Type:: Dissertation
Full Text:: research improves our understanding of the regional distribution and abundance of lichens in relation to

Lichen Functional Trait Variation Along an East-West Climatic Gradient in Oregon and Among Habitats in Katmai National Park, Alaska

Creator:: Spickerman, Kaleigh
Abstract:: Functional traits of vascular plants have been an important component of ecological studies for a number of years; however, in more recent times vascular plant ecologists have begun to formalize a set of key traits and universal system of trait measurement. Many recent studies hypothesize global generality of trait patterns,...
Resource Type:: Masters Thesis
Full Text:: LIST OF FIGURES Figure Page 2.1. Forest Inventory and Analysis (FIA) plots in Oregon

ScholarsArchive@OSU

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

Epiphytic macrolichens in relation to forest management and topography in a western Oregon watershed

Shrub epiphyte communities in relation to stand management in forests of western Oregon

Tree mortality in midwestern oak-hickory forests : rates and processes

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Interactions between nitrogen, phosphorus, and molybdenum in forest soils and cyanobacterial lichen in the Oregon Coast Range

Ecological thresholds, climate extremes, and tree species' distributions across the Pacific coastal United States

Community gradients of Arctic macrolichens in relation to succession, grazing and the environment

Lichen communities and caribou habitat in Denali National Park and Preserve, Alaska, USA

Lichen Functional Trait Variation Along an East-West Climatic Gradient in Oregon and Among Habitats in Katmai National Park, Alaska

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