Index Catalog // ScholarsArchive@OSU

Creator:: Webster, Michael Scott
Abstract:: Ecologists have long questioned why fluctuating populations tend to persist rather than go extinct. Populations that persist indefinitely are regulated by mechanisms that cause demographic density dependence, which works to bound fluctuation above zero. In a series of studies, I have sought to determine the processes and mechanisms that regulate...
Resource Type:: Dissertation
Full Text:: ) trumeptfish, Aulostomus maculatus, and the groupers, (C) Cephalopholisfulva, and (D) C. cruentata, on

Creator:: Zarnetske, Phoebe Lehmann
Abstract:: Biological invasions provide a unique opportunity to study the mechanisms that regulate community composition and ecosystem function. Invasive species that are also ecosystem engineers can substantially alter physical features in an environment, and this can lead to cascading effects on the biological community. Aquatic-terrestrial interface ecosystems are excellent systems to...
Resource Type:: Dissertation
Full Text:: , Scott and Becky Lehmann, for introducing me to nature in the first place, for believing in me, and for

Creator:: Barner, Allison K.
Abstract:: Ecologists must increasingly balance the need for accurate predictions about how ecosystems will be affected by climate change, against the fact that making such predictions at the ecosystem-level may be infeasible. Although information about responses of individual species to a changing environment is increasing, scaling such information to the community...
Resource Type:: Dissertation
Full Text:: here at Oregon State University. I thank my committee, Alix Gitelman, Scott Heppell, Selina Heppell

Creator:: Xie, Yang
Abstract:: Emerging infectious diseases impact both human and wildlife populations. Infectious agents, in particular the aquatic fungus Batrachochytrium dendrobatidis (chytrid), have an influential role in driving global amphibian population declines. The emergence of the chytrid fungus has aspects of both geographic spread as well as climate shifts altering environmental conditions and...
Resource Type:: Dissertation
Full Text:: (Scott 1988, Harwood and Hall 1990, Dazsak et al. 2000, Lyons et al. 2004, Lips et a. 2006, Wyatt et al

Creator:: Biel, Reuben G.
Abstract:: Biological invasions and climate change represent two preeminent threats to ecological communities and biodiversity, altering the distribution and abundance of species, disrupting existing species interactions and forming unprecedented ones, and creating novel ecological communities. Many of the most successful invasive species are also ecosystem engineers, species that physically modify the...
Resource Type:: Dissertation
Full Text:: Appendix B. Chapter 3 supplemental figures and tables .................................... 206 Appendix C

ScholarsArchive@OSU