ii Abstract Tapeng Bay has distinct dry (October to May) and wet (June to September) seasons. The salinity was 33‰ in the dry season, but may as low as 21‰ during the wet season. The yearly average temperature, salinity and chlorophyll a of Tapeng Bay are 26.9 ¢J, 29.7 ‰ and 2.24 £gg/L respectively. Thirty-six species of copepods belonging 18 families and three orders plus 16 unidenitified species were found in the materials of this study. The average abundance of copepods was 5.8 ¡Ó8.4 x10 5 ind./100m 3 . The nine most dominant species were Acartia tsuensis , Paracalanidae (copepodites), Acartiidae (copepodites), Parvocalanus crassi rostris , Oithonidae (copepodites), Oithona dissimilis , n auplius, Acrocalanus indicus and Zausodes spp., contibuting to 81% of the total copepods. Majority of the dominant species exhibited clear seasonal changes in abundance, varying positively with temperature. Acartia tsuensis and Acartiidae were dominant species in station N in the wet season, but other dominant species had higher abundance in the dry season. Aurelia aurita (Cnidaria, Scyphozoa) which was dominant in the dry season, may play the role of a keystone species at stations S and C. Species composition was different among stations. Fish-pond species was dominant at station S, copepodite and nauplii, and neritic species at station N. The abundance of copepods may be influenced by tidal action. When inlet species abundance is higher than neritic species, total copepod abundance at high tide is lower than at low tide, but the trend is reverse for neritic species. The grazing impact of copepods on phytoplankton was 0.04 to 40.36 % per day.

Thesis (Ph. D.)--College of William and Mary. / Vita. Includes bibliographical references. Also available online.

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The West Greenland coast is a typical fjord region with a considerable development of local deepwater basins. The majority of the West Greenland fjords are of the typcial bottom configuration, with a well-developed threshold at the mouth, which normally rises to within 100 or 200 m of the surface. Such a fjord has been named an "Arctic" type fjord by Stephensen (1916), because the bottom water is arctic in character, having a negative temperature and low salinity. Ameralik fjord (Latitude 64o 3' N., Longitude 52o 30' W.) (map) is in this category. [...]

Thesis (Ph. D.)--Florida State University, 2003. / Advisor: Dr. David Thistle, Florida State University, College of Arts and Sciences, Dept. of Oceanography. Title and description from dissertation home page (Aug. 27, 2004). Includes bibliographical references.

M. Phil. in Marine Environmental Science. Includes bibliographical references.

Thesis (Ph.D.)--Aberdeen University, 2009. / Title from web page (viewed on July, 1 2009). Includes bibliographical references.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Supervisor: Edward J. Buskey. Vita. Includes bibliographical references.

Thesis (Ph.D. (Zoology & Entomology)) - Rhodes University, 2007.

A study on the digestive tract of a harpacticoid copepod, 2i3lio£Ss californicus, was carried out using techniques of light and electron microscopy. It was found that a curved, cuticulized esophagus extends from the ventral mouth to the midgut. Its musculature and shape allows fairly large food particles to enter the gut. The noncuticulized portion of the digestive tract consists of; 1. A single, anterior, spherical midgut caecum, 2. An anterior midgut extending from the midgut caecum to the joint at the beginning of the urosome, 3. A posterior midgut extending almost the length of the urosome. The cuticulized hindgut can be divided, structurally, into anterior and posterior regions. It is suggested that the anterior hindgut functions in ion and water regulation as well as begins the formation of a faecal pellet. The posterior hindgut compacts the faecal pellet and retains it until defaecation. At the light and electron microscope levels four cell types could be distinguished. By studying the cell's position in the gut, electron density, amount of lipid, amount and type of vesiculation and the abundance and position of the cell*s organelles, functions for these cells were determined: 1. cell type one is an embryonic cell which will replace cells worn away or lost in secretion. 2. Cell type two functions mainly in the synthesis and secretion of proteins and also plays a role in lipid absorption. 3. Cell type three appears to function mainly in lipid absorption. 4. Cell type four also functions in lipid absorption but this cell is only found in the anterior midgut and the type of vesicles found in this cell suggest a different type of absorption is occurring than in cell type three. From the abundance of each cell type, the length of the microvilli, the development of the basal lamina and luminal projections, the following conclusions were made: 1. The midgut caecum functions mainly for absorption of digested nutrients. 2. The anterior midgut also functions for nutrient absorption but plays a more important role in merocrine and exocrine secretion. The presence of concretions in cell types two and three of the anterior midgut suggest a role in excretion, water or ion regulation. 3. The posterior midgut functions mainly in absorption, though some holocrine secretion is evident. / Science, Faculty of / Botany, Department of / Graduate