Index Catalog // ScholarsArchive@OSU

Movement and demography of larval coastal giant salamanders (Dicamptodon tenebrosus) in streams with culverts in the Oregon Coast Range

Creator:: Sagar, Jina P.
Abstract:: Barriers to the movement of aquatic organisms can increase the genetic and spatial isolation of populations and may decrease the viability of these regional populations. Focus on culvert passage issues has increased as federal agencies attempt to inventory and replace road-crossing stream culverts that are barriers to the movement of...
Resource Type:: Masters Thesis

Buzzing Bolbomyiidae and Air Temperature Monitoring Methods: Investigating Long-Term Ecological Data from the H.J. Andrews Experimental Forest

Creator:: Schmidt, Stephanie A.
Abstract:: The short-term duration of most ecological studies can make it difficult to capture the long-term dynamics of ecosystems and populations. Infrequent or high-impact events can be missed, or erroneously documented as baselines. Long-term ecological research enables a deeper understanding of complex processes, provides a foundation for future insights, and can...
Resource Type:: Masters Thesis
Full Text:: would like to thank my committee, Lisa Ganio, Mark Schulze, and Sherri Johnson for their support, time

A phenological examination of terrestrial invertebrate abundance at H. J. Andrews Experimental Forest, Oregon

Creator:: Mackereth, Kailan F.
Abstract:: Abstract Understanding the effects of climate change on forest ecosystems requires exploration of the relationships of different components of the system, such as the response of biota to local hydrology, temperature, precipitation, and elevation. The Long-term Ecological Research Program at the H. J. Andrews Experimental Forest, located in the Western...
Resource Type:: Undergraduate Thesis and Presentation

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

Creator:: Ramirez, Ben S.
Abstract:: In the Pacific Northwest ecoregion of North America, sculpins represent a major constituent of freshwater assemblages in coastal rivers. Based on their prevalence and abundance, sculpins are likely important ecologically, yet little is known of their interactions with co-occurring species, such as widely studied salmon and trout (salmonines). In this...
Resource Type:: Masters Thesis
Full Text:: Sherri Johnson and George Weaver for helping me with the study design, and offering guidance and

Contributions of riparian vegetation and stream morphology to headwater stream temperature patterns in the Oregon Coast Range

Creator:: Smith, Danielle D.
Abstract:: The role of riparian forests in maintaining temperatures of headwater streams is well established and is a foundation of forest practice rules designed to protect streamwater quality. However, detailed investigation is still needed quantifying specific characteristics of stream systems that affect streamwater temperature including riparian features, stream morphology, and subsurface...
Resource Type:: Masters Thesis
Full Text:: Skaugset and Dr. Sherri Johnson for guidance and support. Special thanks must be extended to the crew at

Fall directions and breakage of riparian trees along streams in the Pacific Northwest

Creator:: Sobota, Daniel J.
Abstract:: In the Pacific Northwest, regulatory agencies have recently implemented management strategies for restoration and maintenance of wood recruitment to streams over time. This allochthonous organic material is a critical component in the geomorphic and biological structure of forested streams. Mathematical models are commonly used to evaluate long-term wood dynamics in...
Resource Type:: Masters Thesis
Full Text:: the USDA Forest Service. I thank my committee members Drs. Stan Gregory, Sherri Johnson, and John

Biogeochemical signals of mountainous forested watersheds' response to disturbance

Creator:: Guerrero-Bolaño Francisco J.
Abstract:: Small mountainous watersheds are disproportionate sources of land-derived particulate organic matter (POM) to long-term sinks like lake bottoms and the ocean. As such, these ecosystems are an essential component of the global carbon cycle. The burial of POM in lacustrine and marine sediments contributes to the drawdown of atmospheric CO2...
Resource Type:: Dissertation

Natural Variability of Nitrogen and Phosphorus in a Forested Headwater Stream System in the Oregon Coast Range

Creator:: Steadman, Casey L.
Abstract:: Our understanding of nitrogen (N) and phosphorus (P) variability in forested stream systems with minimal disturbance is confounded by the complex interactions of hydrologic and biogeochemical controls. In this thesis, our studies evaluate the variability of stream water N and P in a forested, headwater system in the Oregon Coast...
Resource Type:: Masters Thesis
Full Text:: . Sherri Johnson, I appreciate your kind and practical insight and for sharing your thorough knowledge of

Determination of Trade-offs between Wetland Ecosystem Services in an Agricultural Landscape

Creator:: Garrison, Stacey L.
Abstract:: Wetland restoration mitigates effects of agricultural development on water quality, flooding, and habitat loss. Multi-objective optimization for wetland locations and sizes has not included objective functions for water quality, hydrology, and habitat in unison, limiting analysis of trade-offs among these ecosystem services. This study establishes two methods to improve the...
Resource Type:: Masters Thesis
Full Text:: this research and paper: Dr. Bruce Dugger, Dr. Sherri Johnson, and Dr. Jennifer Field. I would like

Headwater stream characterization : an energy and physical approach to stream temperature using distributed temperature sensing

Creator:: Roth, Travis R.
Abstract:: Headwater streams are an integral part of the ecological health of the greater stream network as they provide valuable biological habitat, provide upwards to 95% of total in channel flow, while providing downstream reaches with important constituents such as sediment and woody debris. Small headwater streams are particularly susceptible to...
Resource Type:: Masters Thesis
Full Text:: , 2000), stream thermal regime (Johnson, 2004), chemical weathering rates (Likens et al., 1977), and

ScholarsArchive@OSU

Movement and demography of larval coastal giant salamanders (Dicamptodon tenebrosus) in streams with culverts in the Oregon Coast Range

Buzzing Bolbomyiidae and Air Temperature Monitoring Methods: Investigating Long-Term Ecological Data from the H.J. Andrews Experimental Forest

A phenological examination of terrestrial invertebrate abundance at H. J. Andrews Experimental Forest, Oregon

Experimental analysis of intra- and interspecific competitive interactions between cutthroat trout and sculpins in small streams

Contributions of riparian vegetation and stream morphology to headwater stream temperature patterns in the Oregon Coast Range

Fall directions and breakage of riparian trees along streams in the Pacific Northwest

Biogeochemical signals of mountainous forested watersheds' response to disturbance

Natural Variability of Nitrogen and Phosphorus in a Forested Headwater Stream System in the Oregon Coast Range

Determination of Trade-offs between Wetland Ecosystem Services in an Agricultural Landscape

Headwater stream characterization : an energy and physical approach to stream temperature using distributed temperature sensing

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