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Filtering by: Creator Feeney, Daniel John Creator Lyons, Donald E. Degree Field Wildlife Science

Foraging ecology of caspian terns and double-crested cormorants in the Columbia River Estuary

Creator:

Lyons, Donald E.

Abstract:

A detailed understanding of the foraging ecology of species preying upon threatened or endangered prey may contribute to identifying and evaluating management options to reduce predation, when such management is deemed appropriate. In the Columbia River estuary, Caspian terns (Sterna caspia) and double-crested cormorants (Phalacrocorax auritus) have been identified as...

Resource Type:

Masters Thesis

Full Text:

: Foraging Ecology of Caspian Terns and Double-crested Cormorants in the Columbia River Estuary Dr. Daniel D
Bioenergetics-based predator-prey relationships between piscivorous birds and juvenile salmonids in the Columbia River estuary

Creator:

Lyons, Donald E.

Abstract:

This dissertation focuses on the predator-prey relationship between two species of avian predators, Caspian terns (Hydroprogne caspia) and double-crested cormorants (Phalacrocorax auritus), and one of their important prey types, juvenile salmonids (Oncorhynchus spp.), in the Columbia River estuary of Oregon and Washington states during the period 1998 – 2007. I...

Resource Type:

Dissertation

Full Text:

Columbia River Estuary. Abstract approved: Daniel D. Roby This dissertation focuses on the