Index Catalog // ScholarsArchive@OSU

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

Creator:: Keon, Dylan B.
Abstract:: The sensitive lichen Usnea longissima Ach., formerly a fairly common circumboreal species, has been extirpated from much of its range (e.g., Eastern Europe). Although the U.S. Pacific Northwest (PNW) remains a relative stronghold for the species, U longissima faces increasing pressure in the region from habitat loss, air pollution, and...
Resource Type:: Masters Thesis
Full Text:: Usnea longissima in the Oregon Coast Range : habitat or dispersal? AN ABSTRACT OF THE THESIS OF

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:: characterize the seven main regions of Oregon by the relative abundance of lichen traits. The literature on

Lichen distribution in Oregon coastal dune communities

Creator:: Leuthner, Shirley Mae
Abstract:: Distribution of lichens was studied at seven coastal dune sites in Oregon. Lichens were sampled in the dry stable, dry meadow, meadow, rush meadow, marsh, shrub and forest deflation plain communities. Observations were made of the standing water in the marsh community. Quantitative measurements were made of the percent organic...
Resource Type:: Masters Thesis
Full Text:: Lichen distribution in Oregon coastal dune communities

Variation in metabolism, thallus characteristics, and water relations of three populations of Loboria pulmonaria from western Oregon

Creator:: Neil, Garry Allen
Abstract:: A physio-ecological study of Lobaria pulmonaria (L. ) Hoffm. was done to determine if geographic variation occurred within the species. Lobaria pulmonaria was collected from Table Mountain, Oak Creek, and Lost Prairie, located in the Coast Range, Willamette Valley, and Cascade Range respectively in Western Oregon. During 1971 and 1972...
Resource Type:: Masters Thesis
Full Text:: water relations of three populations of Loboria pulmonaria from western Oregon AN ABSTRACT OF THE

Pendent Usnea (Lichens; Ascomycetes; Parmeliaceae) in Western Oregon : taxonomy; morphological characters; and geographical distribution

Creator:: Pittam, Sherry K.
Abstract:: Pendent Usnea species were collected in western Oregon and examined. Character states, such as cortex-medulla-axis ratio; fibril length; papilla diameter; branching patterns; and presence or absence of fibrils, papillae, soredia, isidia; plus chemistry, were recorded and analyzed by inspection for differences. Historical names were researched in the literature. A comparison...
Resource Type:: Masters Thesis
Full Text:: ; Stevens, 1992). Therefore, the richness of western Oregon habitat was expected to produce a high

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:: western Oregon, lichen community monitoring plots were established prior to treatment and resampled

Lichen response to the environment and forest structure in the western Cascades of Oregon

Creator:: Martin, Erin P.
Abstract:: Lichens are an important part of the biota in western Oregon forests, where they perform valuable ecological roles and contribute significantly to biodiversity. Lichens in western Oregon are threatened by a number of factors including air pollution and land use practices. If we wish to maintain the persistence of lichens...
Resource Type:: Dissertation
Full Text:: distributions of individual lichen species in the western Cascades of Oregon, using a large landscape scale

The association of epiphytic macrolichens and bryophytes with riparian stand types along a valley continuum, Oregon Coast Range

Creator:: Ruchty, Andrea M.
Abstract:: I surveyed epiphytic macrolichens and bryophytes in six stands in each of seven riparian stand types in the Oregon Coast Range. This study (Chapter 2) describes the association of epiphytes with stand types and the corresponding potential of forest canopy conversions to affect epiphyte communities. Species composition, diversity, and representation...
Resource Type:: Masters Thesis
Full Text:: Distribution of the Sensitive Lichen Usnea longissima in the Oregon Coast Range: Habitat or Dispersal? M.S

Analysis and prediction of patterns in lichen communities over the western Oregon landscape

Creator:: Peterson, Eric B.
Abstract:: The diverse lichen flora of the Pacific Northwest is being impacted by population growth and by forest management practices. Accumulating information about our lichen flora will improve our conservation strategies. This dissertation first collects information to improve our understanding of how lichen communities vary among forests of differing structure, and...
Resource Type:: Dissertation
Full Text:: Prediction of Patterns in Lichen Communities over the Western Oregon Landscape. Abstract Approved: Bruce P

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:: Lichen Communities and Caribou Habitat in Denali National

ScholarsArchive@OSU

Factors limiting the distribution of the sensitive lichen Usnea longissima in the Oregon Coast Range : habitat or dispersal?

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

Lichen distribution in Oregon coastal dune communities

Variation in metabolism, thallus characteristics, and water relations of three populations of Loboria pulmonaria from western Oregon

Pendent Usnea (Lichens; Ascomycetes; Parmeliaceae) in Western Oregon : taxonomy; morphological characters; and geographical distribution

Cryptogam communities in forest and steppe ecosystems of Oregon, USA

Lichen response to the environment and forest structure in the western Cascades of Oregon

The association of epiphytic macrolichens and bryophytes with riparian stand types along a valley continuum, Oregon Coast Range

Analysis and prediction of patterns in lichen communities over the western Oregon landscape

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

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