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The dynamics of an isolated population of Acartia tonsa Dana (Copepoda) in Yaquina Bay, Oregon

Creator:: Johnson, John Kenneth
Abstract:: In the upper estuary of Yaquina Bay, Oregon, there is an annual population explosion of Acartia tonsa, (Dana) a calanoid copepod, during the months of July, August and September, followed by a rapid decline to virtual extinction in November. The restricted estuarine distribution affords an excellent opportunity to study the...
Resource Type:: Masters Thesis
Full Text:: DYNAMICS OF AN ISOLATED POPULATION OF ACARTIA TONSA DANA (COPEPODA) IN YAQUINA BAY, OREGON dAbstract

Effects of variations in salinity and temperature on some estuarine macro-algae

Creator:: Kjeldsen, Chris Kelvin
Resource Type:: Dissertation
Full Text:: professor), y Yaquina Bay, an estuary on the central Oregon Coast was stud ied to determine the factors

Effect of nutrient enrichment on marine benthic diatoms in Yaquina Bay, Oregon

Creator:: Cardon, Nanette Clark
Abstract:: Sediment was fertilized with f/2 algal growth medium in situ and in the laboratory daily for one week. Sampling strategy incorporated two intertidal heights and two sites. Experiments were done in August and January. No significant changes in chlorophyll a or diatom community structure were observed after ten days of...
Resource Type:: Masters Thesis
Full Text:: on marine benthic diatoms in Yaquina Bay, Oregon Abstract approved by: Sediment was fertilized

Species specific phytoplankton production rates during a spring diatom bloom in Yaquina Bay, Oregon

Creator:: McMurray, Gregory R., 1925-
Abstract:: A simplified autoradiographic method for estimating species-specific phytoplankton production rates in mixed natural communities was evaluated in the laboratory and employed in the field. Laboratory experiments were designed to test the reliability and variability of the simplified method. Assays of ¹⁴C uptake by liquid scintillation spectrometry were used to evaluate...
Resource Type:: Dissertation
Full Text:: station in Yaquina Bay, Oregon were incubated in situ with 'C, daily from 2 April to 7 May 1974

Effects of micro-nutrients and major nutrients on the growth and species composition of natural phytoplankton populations

Creator:: Frey, Bruce E.
Abstract:: Large-volume (20-liter) bioassays were carried out in order to assess the effects of major nutrients and micro-nutrients on natural phytoplankton populations in water collected from a site close to the mouth of Yaquina Bay, Oregon. Seven long-term experiments were conducted during the years 1975-1976. A stripping technique employing activated carbon...
Resource Type:: Dissertation
Full Text:: site close to the mouth of Yaquina Bay, Oregon. Seven long-term experiments were conducted during the

Population structure of the intertidal shore crab Hemigrapsus oregonensis (Brachyura, Grapsidae) in Yaquina Bay, a central Oregon coast estuary

Creator:: Batie, Robert Edward
Abstract:: The Hemigrapsus oregonensis population at Coquille Point in the Yaquina Bay Estuary on the Central Oregon Coast was studied from April, 1972 through May, 1973. The population was found to be vertically stratified from the 1 ft level to the 5 ft level. Population densities were found to be most...
Resource Type:: Dissertation
Full Text:: YAQUINA BAY. A CENTRAL OREGON COAST ESTUARY The Hernigrapsus oregonensis population at Coquille Point in

The ghost shrimp, Callianassa californiensis Dana, 1854, in Yaquina Bay, Oregon

Creator:: McCrow, Lynne Tucker
Abstract:: The life cycle of Callianassa californiensis Dana, 1854, was studied in the tidal estuary, Yaquina Bay, Oregon. At this latitude it is largely restricted to intertidal sandy mudflats under predominately marine influence. Salinity and temperature appear to determine its distribution to a greater extent than does sediment type. Vertical movement...
Resource Type:: Masters Thesis
Full Text:: (Dat)/ Title: THE GHOST SHRIMP, CALLIANASSA CALIFORNIENSIS DANA, 1854, IN YAQUINA BAY, OREGON

Distribution and reproductive biology of Crangon franciscorum (Stimpson) and Crangon nigricauda (Stimpson), in Yaquina Bay

Creator:: Krygier, Earl Eldon
Resource Type:: Masters Thesis

Aspects of the biology and culture of Scyphomedusae of the Oregon Coast

Creator:: Heitstuman, Thomas M.
Abstract:: Field and laboratory work was undertaken in 1993 to increase understanding of the life history and ecology of the brown jellyfish, Chrysaora fuscescens, a large semaeostome typically abundant in the neritic regions of the Oregon coast during summer months. Few medusae were found during 1993, possibly the result of anomalous...
Resource Type:: Masters Thesis

A seasonal study of sediment reworking by Neotrypaea californiensis in Yaquina Bay, Oregon

Creator:: Fritz, Cara E.
Abstract:: A year-long field study was undertaken to investigate the influence of a number of physical and biological factors, specifically temperature, organic carbon content, and shrimp population dynamics on sediment reworking rates by the ghost shrimp Neotrypaea calforniensis. Because of its role as a structuring agent in estuaries along the West...
Resource Type:: Masters Thesis
Full Text:: Seasonal Study of Sediment Reworking by Neotrvvaea califomiensis in Yaquina Bay, Oregon. Abstract

ScholarsArchive@OSU

The dynamics of an isolated population of Acartia tonsa Dana (Copepoda) in Yaquina Bay, Oregon

Effects of variations in salinity and temperature on some estuarine macro-algae

Effect of nutrient enrichment on marine benthic diatoms in Yaquina Bay, Oregon

Species specific phytoplankton production rates during a spring diatom bloom in Yaquina Bay, Oregon

Effects of micro-nutrients and major nutrients on the growth and species composition of natural phytoplankton populations

Population structure of the intertidal shore crab Hemigrapsus oregonensis (Brachyura, Grapsidae) in Yaquina Bay, a central Oregon coast estuary

The ghost shrimp, Callianassa californiensis Dana, 1854, in Yaquina Bay, Oregon

Distribution and reproductive biology of Crangon franciscorum (Stimpson) and Crangon nigricauda (Stimpson), in Yaquina Bay

Aspects of the biology and culture of Scyphomedusae of the Oregon Coast

A seasonal study of sediment reworking by Neotrypaea californiensis in Yaquina Bay, Oregon

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