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Filtering by: Creator Helfgott, Gabriela I. Academic Affiliation College of Oceanic and Atmospheric Sciences Degree Level Doctoral

Comparative study of the population dynamics, secondary productivity, and reproductive ecology of the euphausiids Euphausia pacifica and Thysanoessa spinifera in the Oregon upwelling region

Creator:

Gutierrez, Jaime Gomez

Abstract:

I compare the seasonal abundance variation, population dynamics, fecundity, egg hatching mechanism and success, and apostome ciliate parasites of the euphausiids Euphausia pac?fica and Thysanoessa spinfera from the Oregon coast, USA. Community structure and nearshore distributions were examined from bi-weekly oceanographic surveys (1970-1972). This region has a strong cross-shelf change...

Resource Type:

Dissertation

Full Text:

Euphausiids Euphausia pacifica and Thysanoessa spinifera in the Oregon Upwelling Region Abstract approved I
Oceanographic conditions around the Galápagos Archipelago and their influence on cetacean community structure

Creator:

Palacios, Daniel Mauricio

Abstract:

The objectives of this dissertation were to describe the complex oceanographic conditions around the Galápagos Archipelago (eastern equatorial Pacific), their seasonal variability, and their effects on patterns of cetacean occurrence. The physical and ecological factors leading to a plume of high phytoplankton biomass in the wake of the Galápagos were...

Resource Type:

Dissertation

Full Text:

, representing Oceanography Dean of the College of Oceanic and Atmospheric Sci Dean of the Graduate Shool I