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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...

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

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

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

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

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

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

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

Trends in Caspian Tern Nesting and Diet in San Francisco Bay: Conservation Implications for Terns and Salmonids

Creator:: Collis, Ken, Roby, Daniel D., Larson, Keith W., Adrean, Lindsay J., Nelson, S. Kim, Evans, Allen F., Hostetter, Nathan, Battaglia, Dan, Lyons, Donald E., Marcella, Tim, and Patterson, Allison
Abstract:: Colony size, nesting ecology and diet of Caspian Terns (Hydroprogne caspia) were investigated in the San Francisco Bay area (SFBA) during 2003-2009 to assess the potential for conservation of the tern breeding population and possible negative effects of predation on survival of juvenile salmonids (Oncorhynchus spp.). Numbers of breeding Caspian...
Resource Type:: Article

ScholarsArchive@OSU

LyonsDonaldFisheriesWildlifeQuantifyingAvianPredation_SupplementalMaterial.pdf

LyonsDonaldFisheriesWildlifeQuantifyingAvianPredation.pdf

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

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

Nutritional stress affects corticosterone deposition in feathers of Caspian tern chicks

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

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

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

Trends in Caspian Tern Nesting and Diet in San Francisco Bay: Conservation Implications for Terns and Salmonids

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