Index Catalog // ScholarsArchive@OSU

Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica

Creator:: Jennings, Scott
Abstract:: Understanding the factors that contribute to or limit reproductive success is a fundamental objective of the field of ecology, providing insight into the ways ecosystems function and facilitating better management of natural resources. Behaviors that benefit offspring often increase costs to parents, and thus parents must adjust their level of...
Resource Type:: Masters Thesis

Long-term decline of a winter-resident bird community in Puerto Rico

Creator:: Faaborg, John, Arendt, Wayne J., Toms, Judith D., Dugger, Katie M., Cox, W. Andrew, and Mora, Miguel Canals
Abstract:: Despite concern expressed two decades ago, there has been little recent discussion about continuing declines of migrant bird populations. Monitoring efforts have been focused almost exclusively on the breeding grounds. We describe the long-term decline of a winter-resident bird population in Guánica Commonwealth Forest, Puerto Rico, one of the last...
Resource Type:: Article
Full Text:: , Arendt WJ, Hobson KA (2004) Understanding survival and abundance of over- wintering warblers: does

Addressing Challenges in the Application of Animal Movement Ecology to Aquatic Conservation and Management

Creator:: Ogburn, Matthew B., Mills Flemming, Joanna E., Harrison, Autumn-Lynn, Cooke, Steven J., Torres, Leigh G., and Whoriskey, Frederick G.
Abstract:: The dynamic nature of most environments forces many animals to move to meet their fundamental needs. This is especially true in aquatic environments where shifts in spatial ecology (which are a result of movements) are among the first adaptive responses of animals to changes in ecosystems. Changes in the movement...
Resource Type:: Article
Full Text:: other taxa) from which habitats used and trophic level can be inferred (Rubenstein and Hobson, 2004

Piscivorous colonial waterbirds in the Columbia River estuary : demography, dietary contaminants, and management

Creator:: Suzuki, Yasuko
Abstract:: Caspian terns (Hydroprogne caspia) and double-crested cormorants (Phalacrocorax auritus) nest in large colonies on East Sand Island in the Columbia River estuary, the largest known colonies for the two species in the world. Both species of piscivorous colonial waterbirds have been identified as predators with a significant impact on the...
Resource Type:: Dissertation
Full Text:: . Donald E. Lyons provided generous assistance with study design, field work, data analysis, and

Ruminal Biodegradation of Heterocyclic Toxic Compounds

Creator:: Tanaree, Dan D.
Abstract:: Cyclic nitramines are a class of compounds that include most of the commonly used explosives today. These are among the most common toxicants released into the environment as a result of human activity, generated on military ranges, battlefields, and production sites. Of these, hexahydro-1,3,5-trinitro-1,3,5- triazine (RDX) is of particular interest,...
Resource Type:: Dissertation

Differences in Adélie Penguin (Pygoscelis adeliae) Chick Growth Rates and Diet

Creator:: Jennings, Scott, Varsani, Arvind, Dugger, Katie M., Ballard, Grant, and Ainley, David G.
Abstract:: Sexually size-dimorphic species must show some difference between the sexes in growth rate and/or length of growing period. Such differences in growth parameters can cause the sexes to be impacted by environmental variability in different ways, and understanding these differences allows a better understanding of patterns in productivity between individuals...
Resource Type:: Article
Full Text:: molecular sexing. We also thank Donald Lyons and Lorenzo Ciannelli for valuable discussions that helped

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

Creator:: D'Elia, Jesse
Abstract:: Reintroduction programs are increasingly being used to save animals from extinction and aid in their recovery. The California Condor (Gymnogyps californianus), one of the most endangered birds in the world, is a remarkable example of how reintroduction programs can help rapidly increase a species' population numbers and range following a...
Resource Type:: Dissertation

The Northern Goshawk on the Southern Blue Mountains and Malheur National Forest: A Technical Review of its Status, Ecology and Management

Creator:: Goodell, John M. and Seager, S. Trent
Abstract:: Stakeholders in the southern Blue Mountains have reported a need for a scientific review of the northern goshawk (Accipiter gentilis atricapillus; hereafter, goshawk) in relation to dry forest restoration and management activities. Here, we provide a compilation of relevant synthesis papers, existing peer-reviewed research, and goshawk monitoring efforts in the...
Resource Type:: Technical Report
Full Text:: , Sam Hobson, Rob Miller, Rob Palmer, Abbott Schindler, and Keith Thompson. Please do not use any of

Top-down Influences of bald eagles on common murre populations in Oregon

Creator:: Horton, Cheryl A.
Abstract:: Populations of organisms are influenced by both top-down (predator driven) and bottom-up (environment or resource driven) effects. Seabird research has largely focused on bottom-up factors influencing reproduction, with little emphasis on top-down. Our goal was to better understand top-down impacts on colonial nesting seabirds over a range of spatio-temporal scales....
Resource Type:: Masters Thesis
Full Text:: Donald Yeager, you both mean the world to me. To my cousin and surrogate big sister, Jessica Yeager

Diversity and abundance of birds across a hardwood gradient in early seral Douglas-fir plantations

Creator:: Ellis, Tana M.
Abstract:: Recent evidence suggests that population declines of some avian species may be driven primarily by reduced quantity and diversity of early-successional habitat on the breeding grounds. Increasing intensity of forest management on private lands and decreased harvest rates on federal lands has resulted in a loss of the diverse early-successional...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica

Long-term decline of a winter-resident bird community in Puerto Rico

Addressing Challenges in the Application of Animal Movement Ecology to Aquatic Conservation and Management

Piscivorous colonial waterbirds in the Columbia River estuary : demography, dietary contaminants, and management

Ruminal Biodegradation of Heterocyclic Toxic Compounds

Differences in Adélie Penguin (Pygoscelis adeliae) Chick Growth Rates and Diet

California condors in the Pacific Northwest : integrating history, molecular ecology, and spatial modeling for reintroduction planning

The Northern Goshawk on the Southern Blue Mountains and Malheur National Forest: A Technical Review of its Status, Ecology and Management

Top-down Influences of bald eagles on common murre populations in Oregon

Diversity and abundance of birds across a hardwood gradient in early seral Douglas-fir plantations

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