Index Catalog // ScholarsArchive@OSU

Biological soil crusts in forested ecosystems of southern Oregon : presence, abundance and distribution across climate gradients

Creator:: Olarra, Jennifer A.
Abstract:: In arid and semi-arid deserts, soils are commonly covered with biological soil crusts. The study of arid biocrusts and their ecological function has become increasingly common in the literature over the last several decades. Interestingly, no mention is made of biological soil crusts in forested ecosystems, raising the question as...
Resource Type:: Masters Thesis
Full Text:: Oregon: Presence, Abundance and Distribution across Climate Gradients AN ABSTRACT OF THE THESIS OF

Differences in Evolutionary History and Ploidy Type Shape the Interactions of Populus tremuloides Michx. with Climate

Creator:: Greer, Burke Thomas
Abstract:: Quaking aspen (Populus tremuloides Michx) is a species with high phenotypic plasticity and a broad distribution that, in the last decade, has experienced climate stress-induced mortality called Sudden Aspen Decline (SAD). In order to help mitigate the effects of SAD in the future, we need a better understanding of aspen’s...
Resource Type:: Dissertation
Full Text:: distribution. Traits associated with local climatic adaptation of aspen populations have been identified

Long term albacore (Thunnus alalunga) spatio-temporal association with environmental variability in the Northeastern Pacific

Creator:: Phillips, A. Jason
Abstract:: This study investigated long-term (1961-2008) changes in albacore (Thunnus alalunga) abundance and distribution in relation to local environmental and large-scale climate indices in the Northeastern Pacific using time series and spatial analyses. Prior to the time series analysis, a wavelet analysis was conducted to examine nonrandom patterns of cyclical variability...
Resource Type:: Masters Thesis
Full Text:: (Thunnus alalunga) abundance and distribution in relation to local environmental and large-scale

Transport of the copepod, Calanus finmarchicus, in the northwest Atlantic during diapause

Creator:: Kowalke, Gregory L.
Abstract:: The copepod Calanus finmarchicus is the most important and biomass dominant mesozooplankter in the temperate-boreal North Atlantic. C. finmarchicus has an overwintering phase, termed diapause, during which it descends to great depths (300-2000m) and is metabolically quiescent for up to ten months. Changes in the currents at depth due to...
Resource Type:: Masters Thesis
Full Text:: the spring distribution and abundance of C. finmarchicus. We evaluated the potential transport of C

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:: are tree species’ distribution from Forest Inventory Analysis (FIA) sites across the Pacific coastal

Distribution, Abundance, and Settlement of Slope-spawning Flatfish during Early Life Stages in the Eastern Bering Sea

Creator:: Sohn, Dongwha
Abstract:: Changes in environmental conditions in marine ecosystems could directly or indirectly influence distribution, abundance, settlement, and size at settlement of flatfish. Understanding species-specific and age-specific responses to environmental variability is important for managing commercially important flatfish stocks. Slope-spawning flatfish whose offspring rely on extensive drift from the slope (spawning) to...
Resource Type:: Dissertation
Full Text:: presented on March 15, 2016. Title: Distribution, Abundance, and Settlement of Slope-spawning

The effects of copper supplementation and breed on milk fatty acid profile

Creator:: Sumner, Jennifer M.
Abstract:: An experiment was conducted to determine the effect of dietary copper (Cu) on Cu status and lipid metabolism in Holstein and Jersey cattle. Eight Jersey and8 Holstein cows in mid-lactation were blocked by days in milk (169 ± 37) and assigned at random to one of two diets. Cows received...
Resource Type:: Masters Thesis
Full Text:: FATTY ACID PROFILE by Jennifer M. Sumner A THESIS submitted to Oregon State University in

Temperature influences on cattle distribution and behavior in the central California foothills

Creator:: Smith, Kelly Ryan
Abstract:: The effect of temperature on cattle behavior and distribution was studied in the foothills of California. To accurately understand changes in livestock behavior and distribution, five seasonal trials, each spanning three to four weeks were conducted beginning spring 2004 and ending spring 2005. The two spring trials and the fall...
Resource Type:: Masters Thesis

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

Creator:: Frey, Sarah J. K.
Abstract:: Population trends and patterns in species distributions are the major currencies used to examine responses by biodiversity to changing environments. Effective conservation recommendations require that models of both distribution dynamics and population trends accurately reflect reality. However, identification of the appropriate temporal and spatial scales of animal response, and then...
Resource Type:: Dissertation
Full Text:: changing environments. Effective conservation recommendations require that models of both distribution

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:: necessarily reflect disturbance but rather site or climatic differences. Lastly, I found that all 17 GIS

ScholarsArchive@OSU

Biological soil crusts in forested ecosystems of southern Oregon : presence, abundance and distribution across climate gradients

Differences in Evolutionary History and Ploidy Type Shape the Interactions of Populus tremuloides Michx. with Climate

Long term albacore (Thunnus alalunga) spatio-temporal association with environmental variability in the Northeastern Pacific

Transport of the copepod, Calanus finmarchicus, in the northwest Atlantic during diapause

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

Distribution, Abundance, and Settlement of Slope-spawning Flatfish during Early Life Stages in the Eastern Bering Sea

The effects of copper supplementation and breed on milk fatty acid profile

Temperature influences on cattle distribution and behavior in the central California foothills

Effects of spatial scale and heterogeneity on avian occupancy dynamics and population trends in forested mountain landscapes

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

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