Otago University Research Archive
Browsing Marine Science by Date Published
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Browsing Marine Science by Date Published
Now showing items 1-20 of 69
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(Thesis, Doctor of Philosophy, 2013)In 2007 the bottlenose dolphins of Doubtful Sound were reported to have been in decline for the previous 12 years. To identify and isolate potential causal factors, I began a comparative study of the resident populations ... -
(Thesis, Doctor of Philosophy, 2013)Intertidal ecosystems are characterized by periodic variations in the water column throughout tidal cycles, a situation that can induce changes in the physiological balance of organisms that live there. If low tide occurs ...
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(Thesis, Doctor of Philosophy, 2012)This work uses field and laboratory measurements to improve the understanding of how shallow water depths affect the velocity and turbulence structure of fluid jets, in particular how a low aspect ratio (AR=depth/width) ... -
(Thesis, Master of Science, 2012)Liothyrella neozelanica (Thomson 1918) (Subphylum: Rhynchonelliformea) is a temperate brachiopod that makes up ecologically important habitat in Doubtful Sound, New Zealand. From December 2010 to December 2011, the seasonal ... -
(Thesis, Master of Science, 2012)This study investigates the skeletal allometry, mineralogy, growth and calcification of two New Zealand serpulids, Galeolaria hystrix and Spirobranchus cariniferus. Tube allometry (length, diameter, wall thickness, carbonate ... -
(Thesis, Doctor of Philosophy, 2012)This work explores the complex and interacting processes across a range of scales that can occur in the immediate vicinity of an ice shelf front, and which are important influences on regional sea ice growth, bottom water ...
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(Thesis, Doctor of Philosophy, 2012)The ocean has absorbed about one third of the total anthropogenic emissions of CO2 since 1800 and, consequently, global mean surface ocean pH has decreased of approximately 0.1 pH unit. This variation of atmospheric CO2 ... -
(Thesis, Doctor of Philosophy, 2012)Lugworms (Polychaeta: Arenicolidae) occur in coastal sediments worldwide and can dominate the macrofauna of intertidal sand and mud flats. They have been recognised as ecosystem engineers due to their bioturbating and ... -
(Thesis, Master of Science, 2011)Sandy beaches are dynamic ecosystems occurring between temperate to tropical latitudes. In-situ primary productivity of wave-exposed sandy beaches is often low, but the food web of such shores may be supported by marine ... -
(Thesis, Master of Science, 2011)Austrovenus stutchburyi is one of the dominant bivalves of New Zealand’s soft shore sheltered habitats (Morton and Miller, 1968; McArdle and Blackwell, 1989). The total inlet biomass level of A. stutchburyi has not differed ... -
(Thesis, Master of Science, 2011)The Otariidae New Zealand sea lion (Phocarctos hookeri) is an understudied terrestrial locomotor whose body morphology has been modified by the aquatic environment with distinct environmental pressures. Despite morphological ... -
(Thesis, Master of Science, 2011)Rock wall communities and structuring processes in Doubtful Sound have been widely studied. However, due to the limitations of SCUBA diving this research has been limited to 30 m. This study attempts to further the ... -
(Thesis, Master of Science, 2011)The East Otago coastline north of the Otago Peninsula, New Zealand, is an area of rocky macroalgal dominated reefs, which contain Macrocystis pyrifera kelp forest and dense mixed macroalgal beds. These areas are considered ... -
(Thesis, Master of Science, 2011)Sea urchins were used as a model organism to investigate oxidative damage with age as they are readily available in both temperate and Antarctic environments and growth data is known. The free radical theory of aging was ... -
(Thesis, Master of Science, 2011)Sea urchin larvae are particularly vulnerable to enhanced ultraviolet radiation (UVR) exposure as they are small, highly transparent, undergo rapid cell division and occupy the upper regions of the water column. Anthropogenically ...
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(Thesis, Master of Science, 2011)In the context of testing the appropriateness of current conservation management, this study used nine moored acoustic monitoring devices (T-PODs) to monitor habitat use by bottlenose dolphins in Doubtful Sound, New Zealand, ... -
(Thesis, Master of Science, 2011)Ocean acidification, as a result of increased atmospheric CO2, has the potential to adversely affect the larval stages of many marine organisms and hence have profound effects on marine ecosystems. This is the first study ... -
(Thesis, Master of Science, 2011)Evechinus chloroticus (commonly known as Kina) is a commercially important species found in coastal New Zealand waters. Their gonad quality is, however, poor in many regions and thus the areas with high quality gonads tend ... -
(Thesis, Master of Science, 2011)Investigating the parameters of niche space for marine organisms is useful for identifying their place in the food web and understanding community dynamics. The range of biological and physical gradients found along the ... -
(Thesis, Doctor of Philosophy, 2011)Sea urchin roe is a highly valued product in the international marketplace. New Zealand’s coastal zones, have significant stocks of sea urchin (Evechinus chloroticus; local name Kina), but quality issues including colour, ...
Now showing items 1-20 of 69