Index Catalog // ScholarsArchive@OSU

Human effects on ecological connectivity in aquatic ecosystems: Integrating scientific approaches to support management and mitigation

Creator:: Crook, David A., Lowe, Winsor H., Allendorf, Frederick W., Erős, Tibor, Finn, Debra S., Gillanders, Bronwyn M., Hadwen, Wade L., Harrod, Chris, Hermoso, Virgilio, Jennings, Simon, Kilada, Raouf W., Nagelkerken, Ivan, Hansen, Michael M., Page, Timothy J., Riginos, Cynthia, Fry, Brian, and Hughes, Jane M.
Abstract:: Understanding the drivers and implications of anthropogenic disturbance of ecological connectivity is a key concern for the conservation of biodiversity and 50 ecosystem processes. Here, we review human activities that affect the movements and dispersal of aquatic organisms, including damming of rivers, river regulation, habitat loss and alteration, human-assisted dispersal...
Resource Type:: Article

The Phytophthora species assemblage and diversity in riparian alder ecosystems of western Oregon, USA

Creator:: Sims, Laura Lee, Sutton, Wendy, Reeser, Paul, and Hansen, Everett M.
Abstract:: Phytophthora species were systematically sampled, isolated, identified and compared for presence in streams, soil and roots of alder (Alnus species) dominated riparian ecosystems in western Oregon. We describe the species assemblage and evaluate Phytophthora diversity associated with alder. We recovered 1250 isolates of 20 Phytophthora species. Only three species were...
Resource Type:: Article
Full Text:: ., & Hansen, E. M. (2015). The Phytophthora species assemblage and diversity in riparian alder ecosystems of

Phytophthora borealis and Phytophthora riparia, new species in Phytophthora ITS Clade 6

Creator:: Hansen, Everett M., Reeser, Paul W., and Sutton, Wendy
Abstract:: Phytophthora borealis and Phytophthora riparia, identified in recent Phytophthora surveys of forest streams in Oregon, California and Alaska, are described as new species in Phytophthora ITS Glade 6. They are similar in growth form and morphology to P. gonapodyides and are predominately sterile. They present unique DNA sequences, however, and...
Resource Type:: Article
Full Text:: species in Phytophthora ITS Clade 6 Everett M. Hansen1 Paul W. Reeser Wendy Sutton Department of Botany

Spatial and Temporal Analysis of Populations of the Sudden Oak Death Pathogen in Oregon Forests

Creator:: Kamvar, Z. N., Larsen, M. M., Kanaskie, A. M., Hansen, E. M., and Grünwald, N. J.
Abstract:: Sudden oak death caused by the oomycete Phytophthora ramorum was first discovered in California toward the end of the 20th century and subsequently emerged on tanoak forests in Oregon before its first detection in 2001 by aerial surveys. The Oregon Department of Forestry has since monitored the epidemic and sampled...
Resource Type:: Article

Physical activity recognition of free-living data using change-point detection algorithms and hidden Markov models

Creator:: Anderson, Michael M.
Abstract:: Physical activity recognition using accelerometer data is a rapidly emerging ﬁeld with many real-world applications. Much of the previous work in this area has assumed that the accelerometer data has already been segmented into pure activities, and the activity recognition task has been to classify these segments. In reality, activity...
Resource Type:: Masters Thesis
Full Text:: Change-Point Detection Algorithms and Hidden Markov Models AN ABSTRACT OF THE THESIS OF Michael M

A New and Facile Route Using Electride Solutions To Intercalate Alkaline Earth Ions into Graphite

Creator:: Xu, Wei and Lerner, Michael M.
Abstract:: A series of new ternary graphite intercalation compounds (GICs) containing alkaline earth metal cations (M = Mg, Ca, Sr, Ba) and ethylenediamine (en) are reported. These GICs are deep blue to green in color and can be prepared as phase-pure compounds by the direct reaction of graphite powder with the...
Resource Type:: Article
Full Text:: Solutions To Intercalate Alkaline Earth Ions into Graphite Wei Xu and Michael M. Lerner* Department of

The Electrochemical Synthesis of the Graphite Intercalation Compounds Containing Tetra-n-alkylammonium Cations

Creator:: Sirisaksoontorn, Weekit and Lerner, Michael M.
Abstract:: The electrochemical intercalation of tetra-n-alkylammonium (TAA) cations into graphite is investigated using galvanostatic reduction and cyclic voltammetry in TAABr/ dimethylsulfoxide (DMSO) electrolytes. Structural and compositional analyzes by X-ray diffraction, thermogravimetric and elemental analyzes show that stable graphite intercalation compounds (GICs) are formed with highly-flattened TAA cation bilayers for (C₅H₁₁)₄N⁺, (C₆H₁₃)₄N⁺,...
Resource Type:: Article
Full Text:: Sirisaksoontorn and Michael M. Lernerz Department of Chemistry, Oregon State University, Corvallis, Oregon 97331

Program Overview and Assessment Methodology for Online Instruction in Chemistry at Oregon State University

Creator:: Thackray, Kim and Lerner, Michael M.
Abstract:: Oregon State University offers a wide range of online chemistry courses. The courses are well subscribed, as of 2013 approximately 13% of our department’s student credit hours were awarded in online courses, and both the online enrollment totals and the fraction of effort devoted to online instruction continue to increase....
Resource Type:: Article
Full Text:: Instruction in Chemistry at Oregon State University Kim Thackray and Michael M. Lerner Department

First Report of Phytophthora pluvialis Causing Needle Loss and Shoot Dieback on Douglas-fir in Oregon and New Zealand

Creator:: Hansen, E. M., Reeser, P. W., Sutton, W., Gardner, J., and Williams, N.
Abstract:: Douglas-fir (DF, Pseudotsuga menziesii) is the most important forest tree in Oregon and is the second most valuable conifer in New Zealand. Phytophthora pluvialis was described (Reeser et al. 2013) from mixed evergreen forests in southwest Oregon. It was subsequently identified as the cause of red needle cast of radiata...
Resource Type:: Other
Full Text:: Loss and Shoot Dieback on Douglas-fir in Oregon and New Zealand E. M. Hansen, P. Reeser, and W. Sutton

A taxonomic and distributional study of the rhodolith-forming species Lithothamnion muelleri (Corallinales, Rhodophyta) in the Eastern Pacific Ocean

Creator:: Robinson, Nestor M., Hansen, G. I., Fernandez-Garcia, C., and Riosmena-Rodriguez, R.
Abstract:: Lithothamnion rnuelleri is reported for the first time as one of the main components of rhodolith beds along the Eastern Pacific Ocean based on samples from Washington State (USA), Pacific Baja California (Mexico), southern Nicaragua, and Costa Rica. Individual rhodoliths ranged from fruticose to lumpy in morphology, and bi-sporangial, tetrasporangial,...
Resource Type:: Article
Full Text:: County, Wash- ington, USA, 11 m depth, April 20, 1983, collector (col.) S. Norton and G. Hansen

ScholarsArchive@OSU

Human effects on ecological connectivity in aquatic ecosystems: Integrating scientific approaches to support management and mitigation

The Phytophthora species assemblage and diversity in riparian alder ecosystems of western Oregon, USA

Phytophthora borealis and Phytophthora riparia, new species in Phytophthora ITS Clade 6

Spatial and Temporal Analysis of Populations of the Sudden Oak Death Pathogen in Oregon Forests

Physical activity recognition of free-living data using change-point detection algorithms and hidden Markov models

A New and Facile Route Using Electride Solutions To Intercalate Alkaline Earth Ions into Graphite

The Electrochemical Synthesis of the Graphite Intercalation Compounds Containing Tetra-n-alkylammonium Cations

Program Overview and Assessment Methodology for Online Instruction in Chemistry at Oregon State University

First Report of Phytophthora pluvialis Causing Needle Loss and Shoot Dieback on Douglas-fir in Oregon and New Zealand

A taxonomic and distributional study of the rhodolith-forming species Lithothamnion muelleri (Corallinales, Rhodophyta) in the Eastern Pacific Ocean

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