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Marine Science

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Recent Deposits

Spatial and Temporal Variability of Phytoplankton Productivity in the Subtropical Front around New Zealand

Ramadyan, Fachry (Thesis, Master of Science, 2017)

The association between enhanced phytoplankton productivity and the Subtropical Front (STF) around New Zealand was investigated using remote sensing images derived from the MODIS-Aqua sensor. The STF is a major circumpolar ...
Moving to the Southern Hemisphere: life-cycle and substratum preferences of the adventive bryozoan Bugulina flabellata (Bryozoa: Cheilostomata) in southern New Zealand

Davis, Virginia Christine (Thesis, Master of Science, 2017)

Invasive species are a growing problem worldwide. The effects of these invasive species are wide-ranging and include negative impacts both on ecosystem services – such as air quality, available recreational space, reduced ...
Demographic variability among subpopulations of two coastal fishes around the South Island of New Zealand

Kolodzey, Stina (Thesis, Master of Science, 2017)

Understanding the spatial structure of populations including variability in reproductive biology among subpopulations is a key objective in fisheries ecology. The aim of the present study was to identify the small scale ...
Environmental and biological characteristics of East Otago estuaries along a gradient of marine connectivity

Foote, Nicole Rose (Thesis, Master of Science, 2017)

Estuaries represent a transitional environment influenced by both terrestrial and marine processes. There are several types of estuary defined by their connectivity with the marine environment that are found along coastlines ...
Social Aspects of Demographic Stochasticity in an Endangered Population of Bottlenose Dolphins (Tursiops truncatus)

Johnston, David Robert (Thesis, Master of Science, 2017)

Photography is one of the most widely used tools in conservation biology. In the analysis of social species, analyses of photographic identification data are used to infer the degree of association among uniquely marked ...
Reproduction and larval ecology of the toheroa, Paphies ventricosa, from Oreti Beach, Southland, New Zealand

Gadomski, Kendall Lynn (Thesis, Doctor of Philosophy, 2017)

Paphies ventricosa is a large surf clam endemic to New Zealand with a patchy distribution and whose populations have substantially declined during the past century owing to overfishing and habitat degradation. Poor recruitment ...
Kelp-forest response to light limitation

Desmond, Matthew (Thesis, Doctor of Philosophy, 2017)

The loss of canopy-forming macroalgae is one aspect of coastal ecosystem degradation that is being driven by anthropogenic stressors. The drivers of canopy loss are, in many cases, well understood, but the effect of light ...
Investigating the Post Mortem Applications of Hard Parts from Two Common New Zealand Squid Species: Onykia ingens and Nototodarus sloanii

Northern, Tyler Jon (Thesis, Master of Science, 2017)

Hard parts of squid are used in a variety of post mortem analyses, such as diet studies, which shed light on various aspects of the squid’s life. In this thesis, hard parts were reviewed. Beaks and statoliths were found ...
Ecology of meiofauna from the New Zealand continental margin

Rosli, Norliana (Thesis, Doctor of Philosophy, 2017)

Deep-sea meiofaunal communities vary at a range of spatial scales. However, identifying which scale(s) account for most of the variability in deep-sea communities remains difficult, as few studies have been designed in ...
Exploring the murky world of the sevengill shark, Notorynchus cepedianus, in southern New Zealand

Housiaux, Jordan Aria (Thesis, Master of Science, 2016)

The broadnose sevengill shark, Notorynchus cepedianus, is an important marine apex predator found in temperate coastal regions worldwide. Despite being identified as an abundant, high trophic level species, there is a ...
The Distribution and Abundance of Surface Macro-Zooplankton in the Waters off the Otago Coast

Takagaki, Saki (Thesis, Master of Science, 2016)

The present study quantifies the effects of various water masses, including the oceanic, neritic, and coastal waters, on the abundance and distribution of surface macro-zooplankton off the Otago Coast through a series of ...
Biofilm response to ocean acidification and the effects on serpulid polychaete settlement

Nelson, Kathryn Sarah (Thesis, Master of Science, 2016)

Anthropogenic carbon dioxide (CO2) emissions are causing long-term changes in ocean carbonate chemistry. This process, ocean acidification (OA), produces reduced seawater pH and overall shifts in carbonate chemistry. ...
Ice fish as sentinels for understanding how environmental changes impact food web diversity and stability in Antarctica

McMullin, Rebecca Mary (Thesis, Master of Science, 2016)

Investigating how environmental variation influences population, food web, and community dynamics is important for predicting the influence of climate change on ice covered ecosystems. The sea ice gradient that runs from ...
Oxidative stress responses in Echinoderm embryos in response to ocean acidification.

Fleury, Kane (Thesis, Master of Science, 2016)

Ocean acidification refers to the ongoing decrease in the pH of the Earth's oceans, caused by the uptake of carbon dioxide from the atmosphere. This ocean acidification is considered to be a threat to marine organisms and ...
Factors influencing the recovery of Pecten novaezelandiae within Te Whaka ā Te Wera Mātaitai, Rakiura

Kearney, Emma (Thesis, Master of Science, 2016)

The New Zealand scallop (Pecten novaezelandiae) is an important customary and recreational species in Whaka ā Te Wera, Rakiura (Paterson Inlet, Stewart Island). Customary management tools such as Mātaitai reserves allow ...
Phytoplankton responses to seabird guano fertilisation in the Southern Ocean.

Shatova, Olga (Thesis, Doctor of Philosophy, 2016)

Great congregations of seabirds in coastal areas of the Southern Ocean result in delivery of nutrient-rich guano to coastal waters potentially enhancing productivity and supporting biodiversity in the region. The magnitude ...
Effects of Ocean Acidification on Developmental Thermal Windows of Echinoderms

Karelitz, Samuel (Thesis, Master of Science, 2016)

Under future ocean warming, thermal tolerance of developmental stages may be a key driver of changes in the geographical distributions and abundance of marine invertebrates. Additional stressors such as ocean acidification ...
Insights into the nitrogen ecophysiology of Macrocystis pyrifera

Stephens, Tiffany (Thesis, Doctor of Philosophy, 2015)

Low nitrogen availability is one of the major environmental factors limiting macroalgal growth in temperate marine ecosystems. Macroalgae have overcome the fluctuating nature of nitrogen supply via adjustments to their ...
A seismic and sedimentological investigation and evolution of the Otago continental shelf and the Saunders Ridges demonstrating the role of longshore drift

McLachlan, Christine Jane (Thesis, Master of Science, 2015)

A seismic survey was collected between March and October 2013 using the RV Polaris II on the inner‐mid Otago continental shelf. The survey included ~200 km of high resolution single channel boomer seismic, CHIRP and side ...
The effect of parasite infection on clam (Austrovenus stutchburyi) growth rate and body condition in an environment modified by commercial harvesting

O'Connell-Milne, Sorrel (Thesis, Master of Science, 2015)

Commercial fishing often reduces densities and changes the structure of target populations. Within these target populations, the transmission dynamics of parasites are usually strongly dependent on host densities. Because ...