Dr. Ferguson’s research involves collaborations with federal (Bureau of Land Management, US Forest Service, US Fish and Wildlife) and state agencies (CA Department of Fish and Game) in investigating the pollination systems of native rare and endangered flowering plants in southern Oregon and northern California. Successful protection of rare or endangered plants requires understanding the pollination requirements of these plants. Her past work identified the unique insect pollinator of the rare clustered lady slipper orchid, Cypripedium fasciculatum and documented the role of pollinators in the breeding system of the endangered Yreka phlox, Phlox hirsuta. Her current research efforts include monitoring and identifying the insect visitors and pollinators of the endangered Cook’s lomatium, Lomatium cookii.
Dr. Janes' is interested in the function of bird song, raptor ecology, and impact of forest management practices on bird populations. It is surprising just how little we understand about the function of bird song. Dr. Janes has been working for a number of years with Hermit and Black-throated Gray Warblers in the attempt to understand the functions of their two song categories. Unlike many birds, these species possess distinct song categories, which permits exploration of the messages contained within each. He has recently completed projects regarding dialects, structure of the complex second category song, and song convergence between the two species. Dr. Janes’ original research interests focused on the structure of grassland and shrub-steppe raptor communities including Red-tailed, Swainson’s, and ferruginous Hawks plus the Prairie Falcon and Golden Eagle. He still works with students interested in raptor research. Recent projects include habitat relations in Great Gray Owl and age differences in relation to wing morphology and habitat use in Red-tailed Hawks. Dr. Janes is also working with the BLM to evaluate the impact of various forest management practices on bird populations both breeding and wintering. He is currently involved in a project evaluating timber harvest involving micro-clearcuts (0.2 Ac).
My research has involved studies of early childhood growth and development in collaboration with the Women, Infants, and Children (WIC) program. These projects have identified patterns of infant growth associated with later obesity and has identified demographic factors related to inappropriate maternal weight gain during pregnancy. More recently, my research has focused on effects of psychosocial stress on the neuroendocrine system. In collaboration with undergraduate students in Biology, we have addressed effects of chronic stress on daily cortisol patterns. These projects have recruited undergraduate students in Anatomy and Physiology courses as participants. Our research has identified individual factors such as coping and emotion regulation that moderate effects of stress on endocrine responses.
Dr. Oline is currently involved in several projects which used molecular genetic methods to address biogeography and population genetics in conifers. He is using chloroplast, nuclear, and mitochondrial markers to investigate the taxonomy of the California red fir-noble fir species complex. Recent molecular evidence suggest that the shasta red fir is a hybrid of California red fir and noble fir, not a distinct subspecies. He is also using DNA sequencing of high resolution chloroplast markers to infer specific founding relationships between island populations of whitebark pine as a result of extinction-colonization dynamics. He is also very interested in micobial biodiversity and biogeography in natural envioronments. The application of molecular techniques to investigate microbial communities in complex natural environments like soils have allowed us to ask basic biogeogrphic and ecological questions of microbial communities that we haven't been able to ask before. He is currently investigating the microbial communities of unvegetated ultrahomogenous dry lakebeds as simple model systems for microbial biogeography.
Dr. Oswald is currently studying the possible impact on wild mammals of a toxic metal, one that occurs naturally in high concentrations. Serpentine geologic formations, such as those found in southern Oregon and northern California, contain high levels of nickel, a potentially toxic metal. In spite of toxic effects, several species of small mammals live in serpentine areas. Dr. Oswald is currently investigating whether these mammals ingest nickel, suffer from negative effects of the toxin, or avoid the negative consequences of nickel exposure.
Dr. Page's research is focused on Environmental Microbiology. She is isolating and characterizing novel bacterial species from diverse environmental sites such as Crater Lake and an abandoned copper mine. She is also interested in assessing microbial pollution problems that occur in regional waterways.
My primary research focus is on the structure and dynamics of aquatic food webs, with emphasis on the effects of human impacts and introduced species. Much of my work is involved with conservation of aquatic organisms and the environments that sustain them. Studies I am currently involved in include (1) a long-term study of the ecology and conservation of endemic aquatic invertebrates inhabiting thermal springs within the Ash Meadows National Wildlife, with special emphasis on the creeping water bugs (family Naucoridae); (2) a study of the effects of landscape heterogeneity and wetland succession on spatial distribution, seasonal movements and long-term viability of an Oregon spotted frog (Rana pretiosa) population within the Cascade-Siskiyou National Monument; and (3) distribution of non-native crayfish their impacts on stream food webs and the native biota.
Dr. Roden's fundamental interests are in plant physiological ecology with special reference to trees and forest ecosystems. The theme that binds his interests together is an interest in how the microenvironment of a plant influences its form and function. In particular, he has been interested in how plants acclimate and adapt to environmental heterogeneity with an emphasis on how those physiological and morphological characteristics affect survival and growth.
Dr. Schroeder's research interests include investigating bee diversity, population dynamics, and the interactions between bees and bee pathogens or parasites and finding biological alternatives to pesticides for the sustainable control of insects pests on local crops. Current research efforts involve collaborations with Oregon State University, Agricultural Experiment Station (Dr. Richard Hilton) and the Agricultural Research Service - Yakima, WA (Dr. Alan Knight) in investigating the role of plant volatiles (pear esters) in codling moth activity in pears. Other work includes collaborative efforts with University of California - Davis, CA (Dr. Robbin Thorp) in surveying bumble bee populations in northern California and Southern Oregon.
Dr. Welden is currently invesigating the phylogenetic relationships among various species and subspcies of red firs on the West Coast. California Red Fir (Abies magnifica) grows throughout the Sierra Nevada. A closely related red fir, Noble Fir (Abies procera), grows in the Cascades and Coast ranges of Washington and Oregon. In the Klamath Mountains and Cascades of southern Oregon and northern California grow trees of intermediate morphology. Some of these are recognized as a subspecies of California Red Fir, called Abies magnifica var. shastensis. Many botanists have suggested that these intermediates are hybrids between California Red Fir and Noble Fir. Dr. Welden and his students are using DNA sequencing to investigate the phylogeny of the red fir complex up and down the West Coast. They hope to use genetic markers from the nuclear, chloroplast, and mitochondrial genomes. These separate genomes are inherited biparentally, paternally, and maternally, respectively, and so potentially allow one to determine which species contributed as pollen donor, egg donor, or both.
Dr. Southworth and collaborators have a 5-year Biocomplexity grant to study mycorrhizae with Quercus garryana (Oregon White Oak or Garry oak) at Whetstone Savanna Preserve in southwestern Oregon. Their group created a database of ectomycorrhizal morphotyes and RFLP patterns of the DNA of mycorrhizae and sporocarps. Continuing research projects include SEM-EDX of mycorrhizal tips, tests of transfer of minerals between oak seedlings and between oaks and grasses, and comparison of mycorrhizae on serpentine.
Dr. Cross' interests are centered on the ecology, behavior and conservation of bats. In particular, he is working on techniques for inventory and monitoring of bat populations, especially forest dwelling species. In addition, he often works with private industry or individuals and government agencies to assess the status of bat populations relative to specific areas or habitats. Students are welcome to participate in such projects.