M.S. - Microbiology (Marine Biology)

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Now showing 1 - 5 of 12
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    A survey of Hawaiian marine fungi and yeast
    ( 2006) Mahdi, Leena Emiko
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    Species Diversity and Community Structure of the Macrozooplankton of Kaneohe Bay, Oahu, Hawaii
    (University of Hawaii, Honolulu, 1969-12) Peterson, William Thornton
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    Diel Changes in the Vertical Distributions of Some Common Fish Larvae in Southern Kaneohe Bay, Oahu, Hawaii
    (University of Hawaii, Honolulu, 1974-12) Watson, William
    Nine series of vertically-stratified zooplankton tows were made with a closing net at a single station in southern Kaneohe Bay, Oahu, Hawaii, between 31 August 1973 and 11 April 1974. Sampling periods occupied from 12 to 26 hours, with tows usually taken at about 3 m intervals between the surface and a maximum depth of 10 m. A total of 21,254 fish larvae of 49 kinds was collected. Six species were abundant: Foa brachygrammus, Omobranchus elongatus, Callionymus decoratus, Caranx mate, Stolephorus purpureus, and Abudefduf abdominalis. Blennius sp. and Gnathanodon speciosus were commonly taken in small numbers. These common larvae displayed five "distribution patterns: 1. F. brachygrammus and the smallest S. purpureus were most abundant near the surface at night and at depths below 4 m during the day; 2. C. mate and G. speciosus were dispersed throughout the water column at night and usually most abundant between 5 m and 6 m depth during the day; 3. Blennius sp., o. elongatus, and A. abdominalis were dispersed throughout the water column at night and concentrated near the surface during the day; 4. the larger ~. purpureus maintained a level of maximum abundance below 6 m day and night; 5. C. decoratus was taken at all depths at all times. Patterns 1, 2, and 3 are shown to be light-related. Pattern 4 is shown to be partially attributable to avoidance of the towed net by S. purpureus larvae larger than about 6mm, and a feeding-related migration is proposed to account for pattern 5. The observed patterns are analogous to those shown for fish larvae in the open ocean on scales of from 50 m to 200 m. It is proposed that Kaneohe Bay represents a vertically compressed ocean with respect to the vertical distribution of fish larvae.
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    The Effects of Light on Primary Productivity in South Kaneohe Bay
    (University of Hawaii, Honolulu, 1974-06) Lamberson, Phillip B.
    Primary production at a single station in Kaneohe Bay, Oahu, Hawaii was studied over a six-month period. Vertical profiles of production, plant biomass, light, and temperature were obtained and the data applied to a production model. The diel changes in surface production were measured and used to estimate daily production. Primary production per unit surface area was found to average 1.5 grams carbon per square meter per day and was higher on days with little vertical stratification and with lower incident radiation. Light appeared to limit production below .12 langleys per minute which occurred below about five meters depth.
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    Zooplankton Grazing in Kaneohe Bay, Hawaii
    (University of Hawaii, Honolulu, 1972-05) Szyper, James Peter
    Grazing rates of several abundant zooplankters in Kaneohe Bay, Hawaii were measured at different concentrations of natural phytoplankton. The concentration by volume of suspended particles, as determined with an electronic particle counter, was used as the estimate of food concentration. The relationship between grazing rate per animal and concentration of particulate food conformed closely to a hyperbolic model widely used to describe an organism's rate of uptake of food or other needed substrate as a function of the concentration of the substrate. Maximum observed grazing rates in the eutrophic south sector of the bay are near the maximum rates predicted by the model. The concentrations of particles in other areas of Kaneohe Bay do not appear to be high enough to permit grazing rates to approach their maximum levels. There appears to be no preference by the grazers for particles of a size other than the size most abundant in the environment.