Now showing items 1-10 of 29
A phylogenetic analysis of the genus Mertensia (Boraginaceae): taxonomy, divergence times, and biogeography
This study explores the taxonomy, systematics, and biogeography 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 ...
Applied Investigations into Grizzly (Ursus arctos) and black bear (U. americanus) ecology and management
The following dissertation is composed of three stand-alone manuscripts. However all contribute to a working set of knowledge and techniques pertaining to the ecology and management of grizzly (Ursus arctos) and black (U. ...
Macroevolutionary patterns and processes of diversification in sedges (Cyperaceae), with emphasis on Eleocharis
This dissertation includes three chapters, the first two of which focus on the genus Eleocharis--an ecologically and economically important group of sedges containing over 250 species, with centers of diversity in seasonally ...
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 ...
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 ...
Exploring the life histories of cephalopods using stable isotope analysis of an archival tissue
Relatively little is known about the life histories of cephalopods compared to many other groups of major marine predators such as fish, marine mammals, and sea birds. Increased importance of cephalopods to global fisheries ...
Testing macroevolutionary hypotheses: diversification and phylogenetic implications
This dissertation research tests macroevolutionary hypotheses in a large vertebrate group (Reptilia: Serpentes), and detects methodological problems of using molecular data to test macroevolutionary hypotheses. The first ...
PREDICTING PLANT NATURALIZATIONS IN THE PACIFIC NORTHWEST: THE FATE OF BAMBOOS IN THE UNDERSTORY OF CONIFEROUS FORESTS
Identifying future plant invaders could drastically reduce the economic costs and environmental damages these species inflict annually. As an addendum to Weed Risk Assessments, I erected and tested a series of pre-introduction ...
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, ...