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An experimental investigation of the effects of temperature and dissolved oxygen on the growth of juvenile English sole and juvenile Dungeness crab

Creator:

Bancroft, Morgan P.

Abstract:

In the past two decades, occurrences of summertime upwelling-driven low dissolved oxygen (DO) events, or hypoxia, have increased along the northeast Pacific coast. If hypoxic events are severe enough to cause marine species mortality, the areas affected are often called "dead zones." In 2002 and again in 2006, the events...

Resource Type:

Masters Thesis

Full Text:

Wiseman, Shanda McCloskey, Maryann Bozza and Melody Pfister. Waldo Wakefield, Matt Yergey, Ric Brodeur
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:

thanks to the Hatfield Marine Science Center, especially to: George Boehlert, Maryann Bozza, Chelle
Habitat use, spatial ecology, and stable isotope variability of the Pacific harbor seal (Phoca vitulina richardii) along the Oregon coast

Creator:

Steingass, Sheanna M.

Abstract:

Pacific harbor seals (Phoca vitulina richardii) are one of Oregon’s most common coastal predators, numbering between 10,000 and 12,000 individuals (Brown et al. 2005b). They consume more than 149 species or types of marine prey within the Pacific Northwest, which include a large variety of commercially important fisheries species. Despite...

Resource Type:

Dissertation

Full Text:

this dissertation to the memory of Maryann Bozza, who was a smiling face, a shoulder of support, and