Index Catalog // ScholarsArchive@OSU

From Hydrology to Biology: How Abiotic Factors Structure Invertebrate Communities in a Free-Flowing River Network

Creator:: Hockett, Justin
Abstract:: Chapter 2: Aquatic macroinvertebrate communities have been shown to exhibit strong differences between erosional (riffle and run) and depositional (pool) macrohabitats of streams. A subset of these communities are aquatic insect taxa that are an important food source for riparian consumers like birds, bats, lizards, and spiders. Understanding the role...
Resource Type:: Masters Thesis
Full Text:: Network. Abstract approved: ______________________________________________________ David

Communities in Flux: The Influence of Hydroperiod on Aquatic Invertebrate Communities in Temporary Ponds

Creator:: Kruse, Christi A.
Abstract:: A central theme of ecology is determining factors that influence species distributions. Within aquatic ecology, species present in flowing waters are primarily influenced by the natural flow patterns of the stream (natural flow regime paradigm) while explanations of species present in standing waters are further divided by habitat type. To...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: ______________________________________________________ Professor David A. Lytle

Weevils That Live Under Trees Thrown Out of the Sea: Phylogeny and Microbial Diversity of Sthereus Motschulsky, 1845 and Related Weevils (Curculionidae: Molytinae)

Creator:: Young, Natasha
Abstract:: Here the diversity and phylogeny of the genus, Sthereus Motschulsky, 1845, and its nearest associates in the large subfamily Molytinae are explored through molecular and morphological characters. Sanger sequencing of five genes determined that Sthereus is not monophyletic. Instead, the one species in the genus Gastrotaphrus Buchanan 1936, G. barberi...
Resource Type:: Masters Thesis
Full Text:: ) Abstract approved: ______________________________________________________ David Maddison Here the

Life History of the Northern Rubber Boa (Charina bottae) in Oregon

Creator:: Leppin, Mark V.
Abstract:: The Northern Rubber Boa (Charina bottae) is a small, secretive boa native to the Pacific Northwest. Despite this being possibly the highest latitude boas and one of only two boas native to the continental U.S., it has received surprisingly little attention. Most of the research on the natural history of...
Resource Type:: Masters Thesis
Full Text:: labmates Dustin Campbell and Dr. David Hubert have been great for discussions and encouragement. Dave was

The Long and Short of it: Dynamic Ways in Which Small Mammals Respond In-Situ to Environmental Gradients in Time and Space

Creator:: Grimes, Juniper E.
Abstract:: In the face of environmental stressors, change is imperative for species to remain in place. The nature and degree of this change is of great interest, as it sheds light into the ways in which species respond to ecological and habitat change and may continue to respond during periods of...
Resource Type:: Masters Thesis
Full Text:: and support throughout my degree. I am also deeply appreciative of David S. Taylor, my unofficial

The Behavioral Responses of Western Toad (Anaxyrus boreas) Larvae to Simultaneous Stressors

Creator:: Reynolds, Emily R.
Abstract:: Animals can be naturally exposed simultaneously to multiple stressors. These include habitat changes, contaminants, diseases, invasive species, parasitism, and predation. Exposure to various combinations of biotic and abiotic stressors may induce behavioral changes that affect the way an individual interacts within its environment.Like other groups of organisms, amphibians are exposed...
Resource Type:: Masters Thesis
Full Text:: Olson, Lindsay Biga, and David Noakes for their helpful advice, support, and comments throughout this

Genetic Structure, Diversity, and Mating System of Leptasterias: Potential for Local Adaptation?

Creator:: Boring, Emily L.
Abstract:: Understanding of gene flow, connectivity, and diversity is critical to predict the stability of key marine species. The Oregon coast of the U.S.A. shows fine-scale levels of geographic variation in environmental stressors such as temperature, pH, and oxygen levels, prompting questions about the potential for local adaptation. In this thesis,...
Resource Type:: Masters Thesis
Full Text:: , T. G., Kelly, M. W., Padilla, G., xF, o, J. L., . . . Dutton, J. M. (2014). Exploring local

Modifications to Rearing Environments as a Method for Reducing Domestication Selection in Hatchery-reared Steelhead (Oncorhynchus mykiss)

Creator:: Obley, Miriam
Abstract:: Since the decline of salmonid populations in the Pacific Northwest, supplementation programs have become frequently implemented by hatcheries as a way to protect and conserve wild stock. However, hatchery-reared fish have lower fitness than wild fish which is likely due to adaptation to the hatchery environment, i.e., domestication selection. Fish...
Resource Type:: Masters Thesis
Full Text:: sincere appreciation to my graduate committee; Jonathan Armstrong, Tiffany Garcia, and David Lytle, all

The Range, Abundance, Spread, and Biophysical Effects of a Novel, Invasive Beachgrass Hybrid, Ammophila arenaria × A. breviligulata, on U.S. Pacific Northwest Coastal Dunes

Creator:: Askerooth, Risa
Abstract:: Non-native ecosystem engineers, which modify the structure and function of their ecosystems, are often a particularly concerning and costly group of invasive species. Such organisms may have substantial impacts on ecosystem services, or the benefits that humans derive from their ecosystems. Many factors play a role in the invasion success...
Resource Type:: Masters Thesis
Full Text:: back dune (Figure 1; Hacker et al. 2012, Zarnetske et al. 2015, David et al. 2015, Biel et al. 2019

Sex and Survival: Reproduction and Anti-Microbial Defense in the Red-Sided Garter Snake (Thamnophis sirtalis parietalis)

Creator:: Blakemore, Leslie A.
Abstract:: The red-sided garter snakes (Thamnophis sirtalis parietalis) of Manitoba, Canada, have been extensively studied for decades with little investigation into their immune system. These animals live very close to the arctic circle and spend over half of the year underground brumating. The annual cycle of the red-sided garter snakes make...
Resource Type:: Masters Thesis
Full Text:: a phenomenal lab! Thank you to Ehren Bentz, David Hubert, and Emily Uhrig. Each of you have

ScholarsArchive@OSU

From Hydrology to Biology: How Abiotic Factors Structure Invertebrate Communities in a Free-Flowing River Network

Communities in Flux: The Influence of Hydroperiod on Aquatic Invertebrate Communities in Temporary Ponds

Weevils That Live Under Trees Thrown Out of the Sea: Phylogeny and Microbial Diversity of Sthereus Motschulsky, 1845 and Related Weevils (Curculionidae: Molytinae)

Life History of the Northern Rubber Boa (Charina bottae) in Oregon

The Long and Short of it: Dynamic Ways in Which Small Mammals Respond In-Situ to Environmental Gradients in Time and Space

The Behavioral Responses of Western Toad (Anaxyrus boreas) Larvae to Simultaneous Stressors

Genetic Structure, Diversity, and Mating System of Leptasterias: Potential for Local Adaptation?

Modifications to Rearing Environments as a Method for Reducing Domestication Selection in Hatchery-reared Steelhead (Oncorhynchus mykiss)

The Range, Abundance, Spread, and Biophysical Effects of a Novel, Invasive Beachgrass Hybrid, Ammophila arenaria × A. breviligulata, on U.S. Pacific Northwest Coastal Dunes

Sex and Survival: Reproduction and Anti-Microbial Defense in the Red-Sided Garter Snake (Thamnophis sirtalis parietalis)

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