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Filtering by: Creator Heppell, Selina Degree Name Master of Science (M.S.) Rights Statement Copyright Not Evaluated

Diel activity patterns in demersal fishes on Heceta Bank, Oregon

Creator:

Hart, Ted

Abstract:

Most fishes exhibit differences in activity patterns from day to night, with a switch from high to low activity at dusk and reverse at dawn. Marine reef fishes show similar behavior among sites, despite dissimilar species assemblages, suggesting that common selection pressures are leading to convergent behavior. Few studies to...

Resource Type:

Masters Thesis

Full Text:

I would like to give special thanks to the members of my committee: Selina Heppell, W. Waldo
Light and the behavior of pelagic animals during night and crepuscular periods

Creator:

Wisdom, Daniel W.

Abstract:

Light plays an important role in ecological processes in the ocean both day and night. While relatively inexpensive, off the shelf instruments are available to measure Photosynthetically Active Radiation or PAR during the day, efforts to quantify light levels at night have proven more difficult. The goal of this work...

Resource Type:

Research Paper
Factors affecting colony size, reproductive success, and foraging patterns of double-crested cormorants nesting on East Sand Island in the Columbia River Estuary

Creator:

Anderson, Cynthia D.

Abstract:

The purpose of this study was to investigate the primary factors affecting colony size, reproductive success, and foraging patterns of Double-crested Cormorants (Phalacrocorax auritus albociliatus) nesting at East Sand Island in the Columbia River estuary, the largest colony of this species on the Pacific Coast of North America. This colony...

Resource Type:

Masters Thesis

Full Text:

indebted to: Scott Anderson, Ken Collis, Mike Hawbecker, Selina Heppell, Pat Jodice, Don Lyons, and Rob

ScholarsArchive@OSU

Diel activity patterns in demersal fishes on Heceta Bank, Oregon

Light and the behavior of pelagic animals during night and crepuscular periods

Factors affecting colony size, reproductive success, and foraging patterns of double-crested cormorants nesting on East Sand Island in the Columbia River Estuary

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