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A Low-disturbance Capture Technique for Ground-nesting Double-crested Cormorants (Phalacrocorax auritus)

Creator:: Courtot, Karen N., Roby, Daniel D., Kerr, Lauren H., Lyons, Donald E., and Adkins, Jessica Y.
Abstract:: Capturing breeding adults of colonially nesting species can entail risks of nest failure and even colony abandonment, especially in species that react strongly to human disturbance. A low-disturbance technique for capturing specific adult Double-crested Cormorants (Phalacrocorax auritus) at a ground-nesting colony was developed to reduce these risks and is described...
Resource Type:: Article
Full Text:: , DonalD e. lyons1 anD JessiCa y. aDKins1,* 1Department of Fisheries and Wildlife, Oregon State

Developing Nondestructive Techniques for Managing Conflicts Between Fisheries and Double-Crested Cormorant Colonies

Creator:: Suzuki, Yasuko, Roby, Daniel D., Lyons, Donald E., Courtot, Karen N., and Collis, Ken
Abstract:: Double-crested cormorants (Phalacrocorax auritus) have been identified as the source of significant mortality to juvenile salmonids (Oncorhynchus spp.) in the Columbia River Basin. Management plans for reducing the size of a large colony on East Sand Island (OR, USA) in the Columbia River estuary are currently being developed. We evaluated...
Resource Type:: Article
Full Text:: Research Unit, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA DONALD E. LYONS, Oregon

Nutritional stress affects corticosterone deposition in feathers of Caspian tern chicks

Creator:: Patterson, Allison G. L., Kitaysky, Alexander S., Lyons, Donald E., and Roby, Daniel D.
Abstract:: Stressful environmental conditions affect the adrenocortical function of developing animals, which can have consequences for their fitness. Discovery of the avian stress hormone corticosterone (CORT) in feathers has the potential to broaden the application of endocrine research in ecological and evolutionary studies of wild birds by providing a long-term measure...
Resource Type:: Article
Full Text:: deposition in feathers of Caspian tern chicks Allison G. L. Patterson, Alexander S. Kitaysky, Donald E

Potential Effects of Management on Caspian Tern Hydroprogne caspia Predation on Juvenile Salmonids at a Colony in San Francisco Bay, California

Creator:: Adrean, Lindsay J., Roby, Daniel D., Lyons, Donald E., Collis, Ken, and Evans, Allen F.
Abstract:: San Francisco Bay is a proposed relocation site for some of the Caspian terns Hydroprogne caspia currently nesting at the world's largest colony for the species in the Columbia River estuary and consuming salmonids listed under the U. S. Endangered Species Act (ESA). However, several runs of salmonids listed under...
Resource Type:: Article
Full Text:: , Oregon 97331, USA Donald E. Lyons Department of Fisheries and Wildlife, Oregon State University, 104

LyonsDonaldFisheriesWildlifeQuantifyingAvianPredation_SupplementalMaterial.pdf

Creator:: Hostetter, Nathan J., Evans, Allen F., Cramer, Bradley M., Collis, Ken, Lyons, Donald E., and Roby, Daniel D.
Abstract:: Accurate assessment of specific mortality factors is vital to prioritize recovery actions for threatened and endangered species. For decades, tag recovery methods have been used to estimate fish mortality due to avian predation. Predation probabilities derived from fish tag recoveries on piscivorous waterbird colonies typically reflect minimum estimates of predation...

LyonsDonaldFisheriesWildlifeQuantifyingAvianPredation.pdf

Creator:: Hostetter, Nathan J., Evans, Allen F., Cramer, Bradley M., Collis, Ken, Lyons, Donald E., and Roby, Daniel D.
Abstract:: Accurate assessment of specific mortality factors is vital to prioritize recovery actions for threatened and endangered species. For decades, tag recovery methods have been used to estimate fish mortality due to avian predation. Predation probabilities derived from fish tag recoveries on piscivorous waterbird colonies typically reflect minimum estimates of predation...
Full Text:: 97702, USA Donald E. Lyons Oregon Cooperative Fish and Wildlife Research Unit, Department of Fisheries

Quantifying Avian Predation on Fish Populations: Integrating Predator-Specific Deposition Probabilities in Tag Recovery Studies

Creator:: Hostetter, Nathan J., Evans, Allen F., Cramer, Bradley M., Collis, Ken, Lyons, Donald E., and Roby, Daniel D.
Abstract:: Accurate assessment of specific mortality factors is vital to prioritize recovery actions for threatened and endangered species. For decades, tag recovery methods have been used to estimate fish mortality due to avian predation. Predation probabilities derived from fish tag recoveries on piscivorous waterbird colonies typically reflect minimum estimates of predation...
Resource Type:: Article

Demographics of Piscivorous Colonial Waterbirds and Management Implications for ESA-listed Salmonids on the Columbia Plateau

Creator:: Adkins, Jessica Y., Lyons, Donald E., Loschl, Peter J., Roby, Daniel D., Collis, Ken, Evans, Allen F., and Hostetter, Nathan J.
Abstract:: We investigated colony size, productivity, and limiting factors for five piscivorous waterbird species nesting at 18 locations on the Columbia Plateau (Washington) during 2004–2010 with emphasis on species with a history of salmonid (Oncorhynchus spp.) depredation. Numbers of nesting Caspian terns (Hydroprogne caspia) and double-crested cormorants (Phalacrocorax auritus) were stable...
Resource Type:: Article
Full Text:: 344 Jessica Y. Adkins, Donald E. Lyons, Peter J. Loschl, Department of Fisheries and Wildlife, 104

Colony Connectivity of Pacific Coast Double-Crested Cormorants Based on Post-Breeding Dispersal From the Region’s Largest Colony

Creator:: Courtot, Karen N., Roby, Daniel D., Adkins, Jessica Y., Lyons, Donald E., King, D. Tommy, and Larsen, R. Scott
Abstract:: To reduce conflicts with fish resources, other colonial waterbirds, and damage to habitats, double-crested cormorants (Phalacrocorax auritus) are currently controlled (lethally and non-lethally) throughout much of their range. Concerns are growing over the Pacific Coast's largest double-crested cormorant colony at East Sand Island (ESI), Oregon near the mouth of the...
Resource Type:: Article
Full Text:: Hall, Corvallis, OR 97331, USA DONALD E. LYONS, Oregon Cooperative Fish and Wildlife Research Unit

Recent Population Size, Trends, and Limiting Factors for the Double-Crested Cormorant in Western North America

Creator:: Adkins, Jessica Y., Roby, Daniel D., Lyons, Donald E., Courtot, Karen N., Collis, Ken, Carter, Harry R., Shuford, W. David, and Capitolo, Phillip J.
Abstract:: The status of the double-crested cormorant (Phalacrocorax auritus) in western North America was last evaluated during 1987–2003. In the interim, concern has grown over the potential impact of predation by double-crested cormorants on juvenile salmonids (Oncorhynchus spp.), particularly in the Columbia Basin and along the Pacific coast where some salmonids...
Resource Type:: Article
Full Text:: Research Unit, Oregon State University, 104 Nash Hall, Corvallis, OR 97331, USA DONALD E. LYONS

ScholarsArchive@OSU

A Low-disturbance Capture Technique for Ground-nesting Double-crested Cormorants (Phalacrocorax auritus)

Developing Nondestructive Techniques for Managing Conflicts Between Fisheries and Double-Crested Cormorant Colonies

Nutritional stress affects corticosterone deposition in feathers of Caspian tern chicks

Potential Effects of Management on Caspian Tern Hydroprogne caspia Predation on Juvenile Salmonids at a Colony in San Francisco Bay, California

LyonsDonaldFisheriesWildlifeQuantifyingAvianPredation_SupplementalMaterial.pdf

LyonsDonaldFisheriesWildlifeQuantifyingAvianPredation.pdf

Quantifying Avian Predation on Fish Populations: Integrating Predator-Specific Deposition Probabilities in Tag Recovery Studies

Demographics of Piscivorous Colonial Waterbirds and Management Implications for ESA-listed Salmonids on the Columbia Plateau

Colony Connectivity of Pacific Coast Double-Crested Cormorants Based on Post-Breeding Dispersal From the Region’s Largest Colony

Recent Population Size, Trends, and Limiting Factors for the Double-Crested Cormorant in Western North America

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