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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

An ecological study of a reef-associated zooplankton community of Barbados, West Indies /

Boers, Jacobus Johannes January 1988 (has links)
No description available.
32

The grazing impact of microzooplankton on phytoplankton of different size classes in Tolo Harbour and Mirs Bay, Hong Kong.

January 2009 (has links)
Lie, An Ying Alice. / Thesis submitted in: November 2008. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2009. / Includes bibliographical references (leaves 115-134). / Abstracts in English and Chinese. / Chapter Chapter 1. --- Introduction --- p.1 / Chapter 1.1. --- Microzooplankton --- p.1 / Chapter 1.1.2. --- Microzooplankton grazing --- p.1 / Chapter 1.2. --- Dilution method --- p.4 / Chapter 1.2.1. --- Basic principles --- p.4 / Chapter 1.2.2 --- Variation and extensive uses of the dilution method --- p.7 / Chapter 1.2.3. --- Criticism of the dilution method --- p.9 / Chapter 1.2.4. --- Results of the dilution experiments and their implications --- p.11 / Chapter 1.3. --- The roles of microzooplankton --- p.16 / Chapter 1.4. --- Phytoplankton --- p.18 / Chapter 1.4.1. --- Size classification --- p.18 / Chapter 1.4.2. --- Chemotaxonomic marker pigments --- p.19 / Chapter 1.4.3. --- Nutrients and phytoplankton dynamics --- p.19 / Chapter 1.5. --- Hypothesis --- p.26 / Chapter 1.6. --- Objectives --- p.26 / Chapter 1.7 --- Research outline --- p.27 / Chapter 1.7.1. --- Microzooplankton grazing rates and phytoplankton growth rates --- p.27 / Chapter 1.7.2. --- Phytoplankton group selection --- p.27 / Chapter 1.7.3. --- Phytoplankton size selection --- p.27 / Chapter 1.8. --- Study sites --- p.27 / Chapter 1.81. --- Tolo Harbour --- p.28 / Chapter 1.8.2. --- Mirs Bay --- p.28 / Chapter 1.8.3. --- Biological and physio-chemical parameters --- p.30 / Chapter Chapter 2. --- Materials and methods --- p.33 / Chapter 2.1. --- Study site and sampling --- p.33 / Chapter 2.2. --- Dilution experiments --- p.33 / Chapter 2.2.1. --- Preliminary dilution experiments and enrichment tests --- p.35 / Chapter 2.2.2. --- HPLC --- p.37 / Chapter 2.2.3. --- Pigment data analysis --- p.41 / Chapter 2.2.4. --- Phytoplankton and microzooplankton community analysis --- p.42 / Chapter Chapter 3. --- Results --- p.43 / Chapter 3.1. --- Field parameters --- p.43 / Chapter 3.1.1. --- Physiochemical parameters --- p.43 / Chapter 3.1.2. --- Chlorophyll a --- p.46 / Chapter 3.2. --- Initial conditions --- p.49 / Chapter 3.2.1. --- Phytoplankton pigment and size fraction composition --- p.49 / Chapter 3.2.2. --- Microscopy cell counts --- p.56 / Chapter 3.3. --- Dilution experiments results --- p.64 / Chapter 3.3.1. --- Linear regression analysis results --- p.64 / Chapter 3.3.2. --- Estimated pigment specific phytoplankton growth rates and microzooplankton grazing rates --- p.66 / Chapter 3.3.3. --- Ratio of microzooplankton grazing to the phytoplankton growth rate in ambient nutrient --- p.70 / Chapter 3.4. --- Correlation analyses --- p.78 / Chapter 3.4.1. --- Physiochemical parameters --- p.78 / Chapter 3.4.2. --- Initial pigment concentration --- p.81 / Chapter 3.4.3. --- Initial densities --- p.81 / Chapter 3.4.4. --- Phytoplankton growth rates and microzooplankton grazing rates --- p.82 / Chapter 3.5. --- Percentage and composition shifts --- p.83 / Chapter 3.5.1. --- Percentage change --- p.83 / Chapter 3.5.2. --- Size fraction --- p.83 / Chapter 3.5.3. --- Pigment markers --- p.83 / Chapter Chapter 4. --- Discussions --- p.103 / Chapter 4.1. --- Hypothesis --- p.103 / Chapter 4.2. --- Phytoplankton growth rates and microzooplankton grazing rates --- p.104 / Chapter 4.3. --- Dilution experiment --- p.105 / Chapter 4.3.1. --- Nutrient enrichment --- p.105 / Chapter 4.3.2. --- Shift of pigment compositions --- p.106 / Chapter 4.3.3. --- Experiment limitations --- p.107 / Chapter 4.4. --- Microzooplankton feeding preference --- p.108 / Chapter 4.4.1. --- Phytoplankton size --- p.108 / Chapter 4.4.2. --- Phytoplankton group --- p.109 / Chapter 4.5. --- Food web dynamics --- p.110 / Chapter 4.5.1. --- The role of microzooplankton --- p.110 / Chapter 4.5.1.1. --- Nutrient recycling --- p.110 / Chapter 4.5.1.2. --- Energy transfer --- p.111 / Chapter 4.5.1.3. --- Phytoplankton control --- p.111 / Chapter 4.5.2. --- The role of mesozooplankton --- p.111 / Chapter Chapter 5. --- Conclusions --- p.113 / References --- p.115 / Appendices --- p.135
33

Zooplankton distribution in the Arctic Ocean with notes on life cycles

Harding, Gareth C. H. January 1966 (has links)
During the Norwegian North Polar Expedition of 1893-96, the historie voyage of the Fram ( Sars, G.O. 1900), the first zooplankton collections were taken from the Arctic Basin. In 1931 the Nautilus made collections north of Spitzbergen, being the first submarine to attempt polar research (Farran, 1936). [...]
34

Trophic dynamics of marine nekton and zooplankton within the northern California Current pelagic ecosystem /

Miller, Todd William. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2006. / Includes bibliographical references. Also issued online.
35

Zooplankton distribution in the Arctic Ocean with notes on life cycles

Harding, Gareth C. H. January 1966 (has links)
No description available.
36

Trophic dynamics of marine nekton and zooplankton within the Northern California Current pelagic ecosystem /

Miller, Todd William. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 172-174). Also available on the World Wide Web.
37

The “suitcase hypothesis” – can eddies provide a pathway for gene flow between Madagascar and KwaZulu-Natal?

Ockhuis, Samantha Angelique Natasha January 2016 (has links)
Thesis (MTech (Oceanography))--Cape Peninsula University of Technology, 2016. / Similarities in marine fauna found off the coasts of southern Madagascar and KwaZulu-Natal (KZN, South Africa) led to the development of the “Suitcase Project”, with the aim of establishing whether eddies that form off southern Madagascar may package and transport biological material, as if in a suitcase, across the Mozambique Channel. In pursuit of this question, sampling was conducted on the southern Madagascan shelf and along a transect across a cyclonic eddy which originated off the southern tip of Madagascar, between the 15th and 23rd of July 2013. Bongo nets (300 and 500 μm-mesh) and a neuston net (900 μm-mesh) were used to collect zooplankton within the upper 200 m and at the surface, respectively. Samples were sorted for meroplankton (larval stages of fish and benthic invertebrates) under a stereo microscope, particularly seeking species known to be common to both the east coasts of Madagascar and South Africa and, thus potential indicators of connectivity between these regions. Larvae of crabs, rock lobster, and fish were used for DNA barcoding. Zooplankton biovolume and abundance were compared between the eddy core, eddy periphery and outer regions of the eddy, as well as stations from the Madagascan shelf. Mean neuston biovolume on the Madagascan (0.08 mL m-3) was not significantly higher than that in the eddy (0.06 mL m-3). Mean bongo biovolume in the upper 200 m was much higher on the Madagascan shelf (0.62 mL m-3) than in the eddy (0.16 mL m-3) although only 2 stations were sampled on the shelf. Highest biovolume in the eddy was recorded in the west eddy zone (0.25 mL m-3) and west outer zone (0.23 mL m-3), which was not statistically significantly higher than the eddy core (0.12 mL m-3) and east eddy zone (0.17 mL m-3). Meroplankton was comprised of coastal origin taxa and was most abundant on the shelf and in the eddy perimeters. Larval goat-fish, Parupeneus fraserorum was identified, a newly described mullid, and has been recorded on both the coasts of Madagascar and KZN, SA. Larvae of coastal invertebrate species identified, include the squat lobster Allogalathea elegans and camel shrimp Rhynchocinetes durbanensis. Other larval fish identified, but not found in high abundance include the families of reef associated fishes, for example: Apogonidae, Labridae, Pomacentridae, Priacanthidae, Serranidae and Sparidae. Higher zooplankton biovolumes, larval abundances and reef-associated larval assemblages found on the Madagascan shelf and in the periphery of the cyclonic eddy compared to the core in this study provide support for the suitcase hypothesis that planktonic organisms are entrained within eddies as they propagate south-westwards of the Madagascan shelf. However, further studies are required to determine whether planktonic larvae are able to cross the Mozambique Channel and reach the KZN coast in time to settle.
38

Zooplankton indicators of water masses in the northeastern Gulf of St. Lawrence

Walsh, Anna Kay B. January 1983 (has links)
No description available.
39

Macrozooplankton and micronekton in the Arabian Sea oxygen minimum zone /

Rapien, Mary. January 2004 (has links)
Thesis (Ph. D.)--University of Rhode Island, 2004. / Typescript. Includes bibliographical references (v. 2, leaves 467-485).
40

Multidisciplinary oceanographic studies of a small island in the Southern California Bight

Caldeira, Rui Miguel Andrade, January 2002 (has links)
Thesis (Ph. D.)--University of California, Los Angeles, 2002. / Vita. Includes bibliographical references.

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