No description available.

In the summer of 1997, 217 fishes of different species (Raja erinacea, R. radiata, R. ocellata, Malacoraja senta, and Squalus acanthias) were collected from the West Isles of the Bay of Fundy, New Brunswick. / Parasites belonging to 13 species were found: 10 Cestoda; 2 Nematoda; and 1 Acanthocephala. Of the 10 cestodes, five are described as new species. The remaining five re-described in detail and compared to similar worms reported in the literature. None of the eight tetraphyllidean cestodes was found in more than one host species, thereby supporting current dogma that the Tetraphyllidea are species specific with respect to their definitive hosts. / There is a close relationship between the topography of the spiral-valve mucosa of the preferred attachment-site and that of the inner-bothridial tegument. This provides further evidence supporting the strict morphological specificity proposed by Williams (1960).

Graduation date: 1982

Graduation date: 1979

Graduation date: 1978 / Best scan available. p.127-235 of original are skewed. p.156-191, 208-235 are photocopied from a computer code print out.

A comparison of a 1976 bathymetric survey of Kaneohe Bay, Oahu, Hawaii, with that of a 1927 survey indicates that there has been an average shoaling of the lagoonal area by 3.3 feet. Shoaling for the north and middle bay at 1.4 ft/49 years is at a considerably lower rate than for the south bay at 5.2 ft/49 years. Sedimentological studies, based on dredging history and detailed chemical, mineralogical and grain-size analyses of 251 bottom samples, suggest that the total volume of fill into the bay during the 49 year period is approximately 25,500,000 cubic yards. Of this amount, approximately 63% is carbonate detritus from the barrier, fringing, and patch reefs as well as by the living corals, 11% is dredging spoils, and the remaining 27% is attributed to terrigenous detritus. The terrigenous fraction, contributed primarily by stream loading and sheet-wash, brings approximately 69,300 tons of sediment to the lagoon per year. Seismic reflection profiles, which span the length of the bay and include additional lines in the south bay, show that most of the infilling material is unconsolidated sediment trapped between and burying coralline structures built during ancient, lower stands of the sea. All information suggests that shoaling rates within the bay have increased since 1927 due to higher stream loads from increased urbanization as well as to extensive dredging and disposal operations. This is particularly evident in the area of the south bay. / Typescript. Thesis (M. S.)--University of Hawaii at Manoa, 1977. Bibliography: leaves 140-145.

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. / Typescript. Bibliography: leaves 23-26.

Typescript. Bibliography: leaves 89-91.

This thesis utilises a range of methodologies to investigate the historical shoreline change and beach morphodynamics at Rapahoe Bay, West Coast, New Zealand. Rapahoe Bay is a small embayment located 15 km north of Greymouth, and contains a complex and dynamic environment under a dominant swell condition. The objectives of this thesis include the investigation the coastline history through aerial photographs and relevant literature, identify and quantify historical shoreline change and the processes that have induced change, examine the short term and seasonal changes in beach profile, identify and quantify wave and transport process and to test the applicability of the zeta shoreline curve on a composite beach. This combined approach investigates the dynamics and process drivers involved in coastline change. This thesis contributes to the research gap of understanding morphodynamic behaviour and controls of composite beach under a dominant swell. Composite beaches types are a variation from mixed sand and gravel beaches with distinct morphological differences. This thesis provides an insight in to the morphodynamic behaviour of composite beaches. The study area contains a small village based by the shoreline and the potential coastal hazard that threatens people, property and infrastructure. Therefore the results from this thesis have an important management implication towards mitigating coastal hazards. The historical coastline change was induced through a combination of wave processes and transport, composite beach morphodynamic behaviour, anthropogenic influence and planform shape. Results show that human infrastructure restricted the retreat of a small hapua landward of the gravel barrier. A combination of change in sediment supply, consistent sediment transport and a high wave energy environment resulted in rapid landward retreat through gravel rollover and coastal erosion. The gravel barrier morphodynamics include increase in crest elevation, steeper shore gradients as a response to high swells resulting in erosion or rollover. The wave environment includes a sediment transport hinge point due to a dominant wave refraction and changes in the shoreline orientation, which further induces coastal erosion. The valid applicability of the zeta planform shape concludes that the shoreline may further iii retreat due to geological controls, potential sediment transport and the transgressive nature of the composite beaches. The combination of methods and results provide both quantified historical change and also potential future scenarios of coastline reshaping. These methods and results are applicable not only to Rapahoe but along other West Coast composite beaches, and the validity of the combination of methods provides a greater understanding of the behaviour of morphodynamic composite beaches and provides quantified results of historical shoreline change and sediment transport at the field site.

Thesis (Ph. D.)--University of California, Santa Cruz, 2002. / Typescript. Includes bibliographical references.