Index Catalog // ScholarsArchive@OSU

Disentangling bottom-up and top-down effects on survival during early ocean residence in a population of Chinook salmon (Oncorhynchus tshawytscha)

Creator:: Miller, Jessica A., Teel, David J., Baptista, Antonio, and Morgan, Cheryl A.
Abstract:: We evaluated the relative importance of "bottom-up" (production-limited) and "top-down" (predator-mediated) processes during early marine residence in a population of Chinook salmon (Oncorhynchus tshawytscha) from the upper Columbia River, USA. We examined length, mass, and condition index of age-0 juveniles collected in the ocean during June and September across 11...
Resource Type:: Article
Full Text:: salmon (Oncorhynchus tshawytscha) Jessica A. Miller, David J. Teel, Antonio Baptista, and Cheryl A

Patterns of loggerhead turtle ontogenetic shifts revealed through isotopic analysis of annual skeletal growth increments

Creator:: Ramirez, Matthew D., Avens, Larisa, Seminoff, Jeffrey A., Goshe, Lisa R., and Heppell, Selina S.
Abstract:: Ontogenetic changes in resource use often delimit transitions between life stages. Ecological and individual factors can cause variation in the timing and consistency of these transitions, ultimately affecting community and population dynamics through changes in growth and survival. Therefore, it is important to document and understand behavioral and life history...
Resource Type:: Article
Full Text:: ., Avens, L., Seminoff, J. A., Goshe, L. R., & Heppell, S. S. (2015). Patterns of loggerhead turtle

The ecological and cultural importance of a species at risk of extinction, Pacific lamprey

Creator:: Close, David A., Fitzpatrick, Martin S., and Li, Hiram W.
Abstract:: The cultural and ecological values of Pacific lamprey (Lampetra tridentata) have not been understood by Euro-Americans and thus their great decline has almost gone unnoticed except by Native Americans, who elevated the issue and initiated research to restore its populations, at least in the Columbia Basin. They regard Pacific lamprey...
Resource Type:: Article
Full Text:: Pacific lamprey has been negligible in the David A. Close, Martin S. Fitzpatrick, and Hiram W. Li Close

Re-Occupancy of Breeding Territories by Ferruginous Hawks in Wyoming: Relationships to Environmental and Anthropogenic Factors

Creator:: Wallace, Zachary P., Kennedy, Patricia L., Squires, John R., Oakleaf, Robert J., Olson, Lucretia E., and Dugger, Katie M.
Abstract:: Grassland and shrubland birds are declining globally due in part to anthropogenic habitat modification. Because population performance of these species is also influenced by non-anthropogenic factors, it is important to incorporate all relevant ecological drivers into demographic models. We used design-based sampling and occupancy models to test relationships of environmental...
Resource Type:: Article

Statistical analysis on otolith data of anadromous fishes

Creator:: Gao, Yongwen, Conrad, Robert, Bean, David, and Noakes, David L. G.
Abstract:: Stable oxygen and carbon isotope δ[superscript 18]O and δ[superscript 13]C analyses of otoliths are becoming increasingly common in fisheries science and management. However, little is known about the statistical properties of isotopic data and few attempts have been made to explore appropriate statistical methods that could be used for otolith...
Resource Type:: Article
Full Text:: Yongwen Gao & Robert Conrad & David Bean & David L. G. Noakes Received: 14 March 2011 /Accepted: 18 July

Dynamics of a recovering Arctic bird population: the importance of climate, density dependence, and site quality

Creator:: Bruggeman, Jason E., Swem, Ted, Andersen, David E., Kennedy, Patricia L., and Nigro, Debora
Abstract:: Intrinsic and extrinsic factors affect vital rates and population-level processes, and understanding these factors is paramount to devising successful management plans for wildlife species. For example, birds time migration in response, in part, to local and broadscale climate fluctuations to initiate breeding upon arrival to nesting territories, and prolonged inclement...
Resource Type:: Article
Full Text:: Dynamics of a recovering Arctic bird population: the

Translocating Adult Pacific Lamprey within the Columbia River Basin: State of the Science

Creator:: Ward, David L., Clemens, Benjamin J., Clugston, David, Jackson, Aaron D., Moser, Mary L., Peery, Chris, and Statler, David P.
Abstract:: The Pacific lamprey (Entosphenus tridentatus) is in decline in the Columbia River Basin, and translocating adult lamprey to bypass difficult migration corridors has been implemented since 2000. We describe and report results from two current translocation programs, provide context for use of translocation, and discuss potential benefits, risks, and uncertainties....
Resource Type:: Article
Full Text:: stocks. David L. Ward HDR Engineering, Inc., Portland, OR 97204. E-mail: david.ward@hdrinc.com

Costs and Efficacies of Methods for Controlling Bird Damages to Grapes

Creator:: deCalesta, David S.
Abstract:: Grape growers seeking to protect their grapes from bird depredations have no economic guidelines for selecting one or more of several control alternatives. Many growers are not aware of the cost of applying the various control techniques, nor do they know how effective these techniques are in preventing damage to...
Resource Type:: Technical Report
Full Text:: Bird Damages to Grapes David S. deCalesta Department of Fisheries and Wildlife Oregon State

A Meta-Analysis of Lesser Prairie-Chicken Nesting and Brood-Rearing Habitats: Implications for Habitat Management

Creator:: Hagen, Christian A., Grisham, Blacke A., Boal, Clint W., and Haukos, David A.
Abstract:: The distribution and range of lesser prairie-chicken (Tympanuchus pallidicinctus) has been reduced by >90% since European settlement of the Great Plains of North America. Currently, lesser prairie-chickens occupy 3 general vegetation communities: sand sagebrush (Artemisia filifolia), sand shinnery oak (Quercus havardii), and mixed-grass prairies juxtaposed with Conservation Reserve Program grasslands....
Resource Type:: Article
Full Text:: , Lubbock, TX 79409, USA DAVID A. HAUKOS, United States Geological Survey, Kansas Cooperative Fish and

The energy ratio mapping algorithm: A tool to improve the energy-based detection of odontocete echolocation clicks

Creator:: Klinck, Holger and Mellinger, David K.
Abstract:: The energy ratio mapping algorithm (ERMA) was developed to improve the performance of energy-based detection of odontocete echolocation clicks, especially for application in environments with limited computational power and energy such as acoustic gliders. ERMA systematically evaluates many frequency bands for energy ratio-based detection of echolocation clicks produced by a...
Resource Type:: Article

ScholarsArchive@OSU

Disentangling bottom-up and top-down effects on survival during early ocean residence in a population of Chinook salmon (Oncorhynchus tshawytscha)

Patterns of loggerhead turtle ontogenetic shifts revealed through isotopic analysis of annual skeletal growth increments

The ecological and cultural importance of a species at risk of extinction, Pacific lamprey

Re-Occupancy of Breeding Territories by Ferruginous Hawks in Wyoming: Relationships to Environmental and Anthropogenic Factors

Statistical analysis on otolith data of anadromous fishes

Dynamics of a recovering Arctic bird population: the importance of climate, density dependence, and site quality

Translocating Adult Pacific Lamprey within the Columbia River Basin: State of the Science

Costs and Efficacies of Methods for Controlling Bird Damages to Grapes

A Meta-Analysis of Lesser Prairie-Chicken Nesting and Brood-Rearing Habitats: Implications for Habitat Management

The energy ratio mapping algorithm: A tool to improve the energy-based detection of odontocete echolocation clicks

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