Marine Science
Recent Deposits
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Testing the connectivity of Dissostichus eleginoides (Patagonian toothfish) between the Pacific coast of southern Chile and the Patagonian Shelf in the southwest Atlantic
Patagonian toothfish, Dissostichus eleginoides, are endemic to the Southern Hemisphere and are commonly associated with sub-Antarctic Islands and seamounts. They are found around the Falkland Islands and an economically ... -
Effects of bathymetry, wave environment and sea level on rip current dynamics in a wave-resolving model
Rip currents and nearshore circulation are important as they influence sediment transport and have the potential to be hazardous to beach users. Obtaining field observations of the flow characteristics is expensive thus ... -
Demographic and reproductive variability within and among subpopulations of temperate reef fishes
Traditionally, fisheries management has assumed that all fish within a marine population contribute the same per unit biomass to population growth. However, it has become evident that older, larger individuals may contribute ... -
Impact of light and water flow on the responses of coralline algae to ocean acidification
Coralline algae are globally abundant components of benthic habitats and play foundational roles in coastal ecosystems such as temperate kelp forests and coral or rocky reefs, where they are often the dominant substrate ... -
The impact of microplastics on larvae of the sea urchin Pseudechinus huttoni
Microplastic pollution in the marine environment is of increasing global concern and, therefore, determining the effect of its presence on marine organisms should be a research priority. Although ingestion and adverse ... -
The lost kelp forest: a multi-disciplinary approach to understand change of Macrocystis pyrifera habitat in Otago, New Zealand
Macrocystis pyrifera (M. pyrifera) is an ecosystem engineer. It modifies the environment providing the foundation, food, resources, and habitat provisions for many other organisms. Globally, kelp forests have been declining ... -
The diet of New Zealand fur seals (Arctocephalus forsteri) in southern New Zealand
I used information from 574 scats and 56 regurgitants to investigate diet of New Zealand fur seals (Arctocephalus forsteri) in southern New Zealand between June 1995 and March 1997. The five study sites were: Long Reef at ... -
Tracking flow and fate of organic matter and contaminants within native food webs surrounding finfish aquaculture
The development of aquaculture to provide a source of protein has the potential to alleviate pressure on wild fish stocks, allowing marine systems to regenerate while providing livelihood to millions of people. Given the ... -
Meta-ecosystem approach to ecotones. Methods and applications
Ecotones are landscape features that intervene between adjoining ecosystems. They have attracted attention for their potential role in regulating the exchanges between communities, and thus their potential influence on ... -
Size, Shape, Scope and Strength of skeletons, Evechinus chloroticus, New Zealand
Ocean acidification will affect calcifying organisms as calcium carbonate saturation levels decrease due to climate change. Echinoids are important components of the coastal ecosystem and use magnesium in their skeletal ... -
Trophic structure through the history of exploitation in New Zealand fish communities
Marine ecosystems have been under a considerable amount of stress due to human activities, especially after industrialization. The abundance and ecological interactions of exploited fishes are influenced by fishing ... -
The response of estuarine bivalve Austrovenus stutchburyi to hypoxic multiple-stressor environments
Eutrophication-induced hypoxia is amongst the most widespread anthropogenically deleterious environmental issue occurring globally in coastal marine environments. Along with habitat loss, overfishing and harmful algal ... -
Abundance estimation of Hector's dolphin
This thesis reports the results of the first boat-based line-transect survey to be carried out in New Zealand waters. The survey was carried out in January and February 1998, successfully adapting conventional line-transect ... -
Click counting : an acoustic censusing method for estimating sperm whale abundance
Present estimates of sperm whale (Physeter macrocephalus) population size are extraordinarily imprecise. This is largely due to sperm whale behaviour and distribution, which compromises the utility of the visual survey ... -
Acoustic censusing of sperm whales at Kaikoura, New Zealand : an inexpensive method to count clicks and whales automatically
Commercial hunting of sperm whales ended in 1988. Today, populations appear to suffer from a shortage of large males, depressing fertilisation rates. Sperm whales spend most of their time underwater, feeding at depths to ... -
Long-term monitoring of sperm whales in Kaikoura, New Zealand : data-management, abundance and population dynamics
Male sperm whales (Physeter macrocephalus) can be found year-round within a few nautical miles off the coast of Kaikoura, New Zealand. Systematic sighting surveys were carried out in 2007, contributing to the long-term ... -
Tidal energy theory and turbine array design in constricted channels
This thesis extends existing tidal energy theory to include the effects of channel constriction - previous general theoretical works have been limited to unconstricted rectangular channel geometries. This work uses a ... -
Aerial photogrammetry and size structure analysis of sperm whales (Physeter macrocephalus) at Kaikōura, New Zealand
Length measurement is a fundamental metric in the study of animals, and an important challenge in cetacean science. Whales are among the most difficult animals to measure alive, and a variety of techniques have been applied ... -
Genetics of the snake star Astrobrachion constrictum (Ophiuroidea: Asteroschematidae) in Fiordland, New Zealand
This thesis was initiated to address two of the questions posed by Stewart's 1995 study on the biology of Astrobrachion constrictum; Is gene flow between fiords restricted in this ophiuroid species and are the colour morphs ...