Index Catalog // ScholarsArchive@OSU

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

Yield responses of invasive grasses to carbon doses

Creator:: Brunson, Jessi L.
Abstract:: The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...
Resource Type:: Masters Thesis
Full Text:: : David A. Pyke Patricia S. Muir The sagebrush steppe ecosystem of the northern Great Basin is

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:: of the study r 19 0 Crater Peak LM '265 V - 55O3 Makiaks S'r'J Ma BM 5508\ - Z2 \7a11s

Vascular and nonvascular vegetation of the Caldera of Mt. Aniakchak, Alaska

Creator:: Hasselbach, Linda M.
Resource Type:: Masters Thesis
Full Text:: - dimensional hyperspace. My committee members, Gary Larson, David McIntire and Theo Dreher were also very

Variation in plant response to inoculation with different isolates of vesicular arbuscular mycorrhizal fungi

Creator:: Ianson, David C.
Resource Type:: Dissertation
Full Text:: isolates of vesicular arbuscular mycorrhizal fungi AN ABSTRACT OF THE THESIS OF David C. Ianson for the

Using local climate to explain temporal variation in rare plant populations

Creator:: Pfingsten, Ian A.
Abstract:: Increased temperatures due to anthropogenic-induced climate change may raise the threat of extinction for taxa with sessile life histories (e.g., plants) in the near future. Linking climate change models to demographic models may provide useful insights into the potential effects of environmental changes on rare plants, and therefore aid in...
Resource Type:: Masters Thesis
Full Text:: study populations. S – seedlings, J – juveniles, V – vegetatives, R – reproductives

Use of simultaneous analyses to guide fossil-based calibrations of Pinaceae phylogeny

Creator:: Gernandt, David S., Magallon, Susana, Lopez, Gretel Geada, Flores, Omar Zeron, Willyard, Ann, and Liston, Aaron
Abstract:: Uncertainties in the age and phylogenetic position of Pinaceae fossils present significant obstacles to our understanding of the timing of diversification in the family. We demonstrate that simultaneous phylogenetic analyses of chloroplastDNA(matK and rbcL) and nonmolecular characters that include both extant genera and a limited number of fossil taxa provide...
Resource Type:: Article
Full Text:: FOSSIL-BASED CALIBRATIONS OF PINACEAE PHYLOGENY David S. Gernandt,1,* Susana Magallón,* Gretel Geada

Unearthing the Cretaceous Diversification of Cornales

Creator:: Atkinson, Brian A.
Abstract:: The order Cornales (dogwoods) is the earliest diverging lineage within the most diverse group of flowering plants, the asterids (>80,000 species). Although molecular phylogenetics have significantly improved our understanding of cornalean systematics, early phylogenetic relationships remain uncertain due to an initial rapid radiation. The fossil record of Cornales is extensive...
Resource Type:: Dissertation

Understanding sporulation and dissemination of Podosphaera macularis, hop powdery mildew

Creator:: Peetz, Amy B.
Abstract:: Podosphaera macularis causes one of the most important diseases, powdery mildew, of Humulus lupulus (hop). If left unmanaged, hop powdery mildew can cause total crop loss due to disease or browning of hop cones rendering the cones unmarketable to buyers. The Hop Powdery Mildew Infection Risk Index (HOPS) is heavily...
Resource Type:: Masters Thesis
Full Text:: by Dr. David Gent of the USDA-ARS FSCRL and members of his lab. CONTRIBUTION OF AUTHORS Dr

Understanding Host-Pathogen Interactions in the Sphaerulina musiva-Populus Pathosystem

Creator:: Dunnell, Kelsey Liann
Abstract:: Host-parasite interactions between the pathogen, Sphaerulina musiva, and its host, Populus spp., were examined in a series of studies. In the first study, variation in resistance of Populus nigra from 7 locations in Europe was differentiated based on the parameters cankers per cm and disease severity score. The analysis evaluated...
Resource Type:: Dissertation
Full Text:: . David Shaw, and Dr. Daniel Luoma. This research could not have been accomplished without the help of

ScholarsArchive@OSU

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

Yield responses of invasive grasses to carbon doses

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

Vascular and nonvascular vegetation of the Caldera of Mt. Aniakchak, Alaska

Variation in plant response to inoculation with different isolates of vesicular arbuscular mycorrhizal fungi

Using local climate to explain temporal variation in rare plant populations

Use of simultaneous analyses to guide fossil-based calibrations of Pinaceae phylogeny

Unearthing the Cretaceous Diversification of Cornales

Understanding sporulation and dissemination of Podosphaera macularis, hop powdery mildew

Understanding Host-Pathogen Interactions in the Sphaerulina musiva-Populus Pathosystem

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