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Filtering by: Subject Common murre -- Predators of -- Oregon

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:

Page Figure 2.1. Map of Common Murre index sites (n=23) and census sites (n=88) along the Oregon
Dietary responses of marine predators to variable oceanographic conditions in the Northern California Current

Creator:

Gladics, Amanda J.

Abstract:

Variable ocean conditions can greatly impact lower trophic level prey assemblages in marine ecosystems, with effects propagating up to higher trophic levels. Our goal was to better understand how varying ocean conditions influence diets and niche overlap among a suite of low- to mid trophic level predators. We studied the...

Resource Type:

Masters Thesis