Now showing items 1-10 of 71
Genetic history of Chinook and sockeye salmon analyzed using ancient and contemporary mitochondrial DNA
Pacific salmon (Oncorhynchus spp.) serve an important social and economic role in western North America. Despite historical abundance, native salmonids are now at risk of extinction throughout much of their native range. ...
Bromus tectorum in the Intermountain West and Great Plains (USA): Population Variation and Regional Environment Influence the Course of an Invasion
Biological invasions are an important component of anthropogenic global change and are a major source of environmental and economic damage. Future distributions of invasive species are expected to shift as a result of ...
OVARIAN PHYSIOLOGY IN A NON-DOMESTICATED BIRD: MECHANISMS BEHIND THE ACCUMULATION AND VARIATION OF YOLK ANDROGENS IN HOUSE SPARROWS
In birds and other oviparous species, the accumulation of maternally-derived yolk androgens may represent an adaptive transgenerational information system. Researchers have found multiple effects of these yolk androgens ...
Diversification and Phylogeography of Synthyris (Plantaginaceae) in Northwestern North America
Both climatic and geologic activity can shape the distributions of species by altering the habitat in which they live and necessitating populations to either migrate, adapt, elsewise they may go extinct. Migration offers ...
Niche separation of grizzly (Ursus arctos) and American black bears (Ursus americanus) in Yellowstone National Park
Three manuscripts constitute the following dissertation. Chapter one studied how sympatric grizzly bears and black bears in Yellowstone National Park relied on different food items to meet their energetic requirements. In ...
Detecting Hybridization in Hawaiian Cyrtandra Using Genome-Wide Data
Cyrtandra (Gesneriaceae) is a genus of flowering plants with over 800 species distributed throughout Southeast Asia and the Pacific Islands. On the Hawaiian Islands, 60 named species and over 62 putative hybrids exist, ...
Predation on the Invasive Copepod, Pseudodiaptomus forbesi, and Native Zooplankton in the Lower Columbia River: An Experimental Approach to Quantify Differences in Prey-Specific Feeding Rates
(PLoS One, 2015)
Invasive planktonic crustaceans have become a prominent feature of aquatic communities worldwide, yet their effects on food webs are not well known. The Asian calanoid copepod, Pseudodiaptomus forbesi, introduced to the ...
Sieve Element Structure and Function
The distribution of photosynthetically derived assimilates through plants occurs in specialized cells called sieve elements that are connected to each other forming a microfluidic system within the plant. Sieve elements ...
MONOLIGNOL AND LIGNAN BIOSYNTHETIC STUDIES: FROM REACTION MECHANISMS TO NEXT GENERATION SEQUENCING
Three objectives were studied: determination of the biochemical mechanisms of an
INVESTIGATION INTO PROPERTIES OF C4 PHOTOSYNTHESIS FROM SINGLE-CELL AND KRANZ TYPE SPECIES IN SUAEDOIDEAE (CHENOPODIACEAE)
Although the majority of C4 plants have an anatomy that separates carboxylation and decarboxylation activities between two cell types (Kranz anatomy), some terrestrial plants Bienertia cycloptera, B. sinuspersici and Suaeda ...