At IMAS we deliver exciting, innovative, relevant, globally distinctive, practical and first-class education programs.
Positioned at the gateway to the Southern Ocean and Antarctica and with collaborations and partners with the world's leading scientific institutions, IMAS can provide the next step in your career.
If you are interested in conducting postgraduate research we have a number of pre-approved honours and masters projects.
Available projects
Ecology and biodiversity
Primary supervisor:
Supervisory team:
- Prof Simon Goldsworthy - South Australian Research & Development Institute
- Dr Ryan Baring - Flinders University
- Dr Gretchen Grammer - South Australian Research & Development Institute
Brief project description:
Recent improvements in biologging instrumentation have provided state-of-the-art underwater cameras that can be deployed on marine predator species, providing the opportunity to collect critical data on habitat use and foraging ecology.
Most recently, underwater cameras combined with high-resolution GPS and tri-axial accelerometer/magnetometer devices, have been used to map and identify benthic habitats used by the endangered Australian sea lion (Neophoca cinerea). Cameras and tracking instruments were deployed on eight adult female sea lions during a single foraging trip (2-6 days), four at Seal Bay (Kangaroo Island) and four at Olive Island (off Streaky Bay, western Eyre Peninsula, South Australia).
Each deployment recorded approximately 8 hours of footage (range 6.7 to 12.8 hours), capturing nearly 80 hours in total and covering 560 km of seabed at depths between 5 and 110 meters. In addition to providing detailed information on the habitats used by sea lions, the camera video also provides data on the species and size of prey consumed in different habitats, and the foraging strategies employed.
This project will use video data to quantify sea lion diet and consumption rates over different habitats, and develop food web models of different sea lion habitats and their associated diets as a first examination of their role and impact on benthic ecosystems.
Supervisory Team:
Brief project description:
Australia’s south-east marine ecosystems have undergone dramatic changes over the past three decades. This project will integrate multiple lines of evidence to test for a system-wide productivity change that spans shelf and coastal reef ecosystems. The project’s findings have implications for the management of fisheries and conservation of south-east marine ecosystems. Several studies independently point to productivity declines in different south-east marine ecosystems.
This project will integrate data from trawl fisheries, reef surveys and macroalgal productivity estimates to ask if these disparate trends share a common driver. The project will use ecosystem modelling tools to ask if fishing and climate are causing system wide change in productivity. This project will require the use of ecosystem modelling tools and the R program.
Training in modelling will be provided to help the candidate develop these valuable skills that are in high demand by employers. Applicants should be enthusiastic about learning modelling techniques and their application to ecosystem management.
Supervisory team:
Brief project description:
The diversity of benthic species is an important aspects of the marine ecosystem. Traditional methods of assessing benthic species richness often involve labor-intensive and time-consuming processes. With advancements in underwater imaging technology, there is potential to streamline these assessments using image analysis.
This research project aims to investigate the relationship between camera image properties - such as patterns, colours, and contrasts - and the observed species richness in seafloor images. The student will use a recently developed large dataset of annotated seafloor imagery from the Antarctic to conduct this study.
Objectives:
- Identify key image properties/features that influence/correlate with the diversity of Antarctic benthic species.
- Analyze Antarctic seafloor images to extract relevant features.
- Correlate these image properties with the observed species richness and estimate errors/uncertainties for this approach.
- Test predictive capacity of the algorithm on independent data
Methods: Utilize a comprehensive dataset of Antarctic seafloor images, ensuring a variety of camera settings to capture different patterns, colors, and contrasts.
Image Processing: Use software tools (in either R or Python) to analyze image properties and extract features such as color histograms, texture patterns, and contrast levels.
Species Identification: Identify and count species in seafloor images to create an independent test dataset.
Statistical Analysis: Apply statistical methods to correlate image properties with species richness, using tools like regression analysis and correlation coefficients.
Expected Outcomes: A better understanding of how camera image properties are influenced by the diversity of benthic species. A tool to rapidly extract biodiversity information from an ever-increasing amount of seafloor images.
Why This Project Matters: This project will provide students with hands-on experience in marine biology, image processing, and data analysis. By understanding the relationship between image properties and species richness, students will contribute to speeding-up the translation of raw data into management-relevant data, which is important for conservation efforts.
Primary supervisor:
Supervisory team:
Brief project description:
Countless volcanic remnants have been identified under the Antarctic ice sheets, but we know little about their age, heritage and interaction with the ice sheet. Even the thick continental crust of East Antarctica shows volcanic edifices of which some were active only 50k years ago such as the Gaussberg in the Australian Antarctic territory.
Volcanic activity is however not constraint to the continent and can be observed in geophyscial datasets from the Southern Ocean. Volcanism close to the Antarctic continent has the potential to warm the ice sheet from below adding an additional treat to its stability.
In this project, you will use geophyscial datasets such as bathymetry, subbottom profiler data and reflection seismic data to map volcanic activity such as seamounts in the Southern Ocean offshore the Australian Antarctic sector. Based on previous sedimentary age grids, you will be able to date the volcanism and relate it to known volcanism onshore such as the Gaussberg eruption (50ka) or passing mantle plumes such as the Kerguelen hotspot.
Supervisory Team:
- Primary supervisor: Mohamed Basseer Codabaccus
- Andrew Trotter
- Ernest Chuku
Brief project description:
The commercial production of oysters in the region of pipe clay is a major concern due to decline in growth and condition over the past few years. Historically, this region has been very productive (10% Tasmanian oyster production) and has sustained oyster farming for over 40 years. To date, factors leading to the decline in production is unknown.
To facilitate narrowing research focus, an assessment of the nutritional condition of oysters grown in impacted areas of Pipe Clay is critical. Thus, the project focus on understanding whether an imbalance in nutrient exist in oysters grown in impacted areas.
This is highly relevant to inform on next steps for managing oyster farming in this area.
Primary Supervisor:
Supervisory Team:
Brief project description:
In 2012 Macrocystis pyrifera, or giant kelp, was listed as an endangered ecological community under the Australian EPBC Act (1999). Yet only a decade earlier, giant kelp received little public recognition or advocacy attention despite the documented decline of the kelp forest, indeed it is reported anecdotally that some community cohorts regarded giant kelp as a nuisance.
Meanwhile, beyond this single species, the biodiversity and conditions of many communities and suites of species of the southern temperate reef system are under threat due to warming and more acidic ocean waters. However, this changing state is not well recognised in the public or policy domains. To help inform understanding of formation of conservation policy priorities, this project asks:
- How did the giant kelp move from ignored or negatively viewed to highly valued ecologically and socially species – charismatic megaflora - and worthy of protection? (the backwards analysis)
- What can be learnt from this case that can inform future formation of conservation policy priorities to protect and restore biodiversity across the great southern reef?
Fisheries and aquaculture
Primary supervisor:
Supervisory team:
- Kerrie Swadling
- Luke Brokensha
Anecdotal evidence suggested an increasing interaction of scavenging crustacea depredating fish caught on longlines within the Heard Island and McDonald Islands toothfish fishery. Since 2022, Australian vessels have been trialing bespoke traps designed to sample the scavenging crustacea. Here we present the development process of the traps, and with over with over 1800 deployments during the trial period, and initial investigations into distribution and abundance of scavenging crustacea. Typically, the distribution of crustacea have been highly heterogeneous even within small sampling distances, whilst size of individuals within Amphipoda and Isopoda have shown increasing size with decreasing latitude.
This project will work across the Australian Antarctic Program Partnership and the Australian Antarctic Division fisheries team to sort and identify the samples collected so far. This project will contain two main components:
- Sorting benthic invertebrates into large taxonomic groups and imaging with the zooscan,
- Modeling of invertebrate occurrence with longline catch rates to explore interactions. This projects provides a split between lab work across the AAD and IMAS with quantitative modeling skills.
This projects provides a split between lab work across the AAD and IMAS with quantitative modeling skills.
Primary supervisor:
Supervisory team:
Brief project description:
Background: Sustainability of fisheries is generally focused on the fished species, as well as direct impacts on other species as by-catch, and the local environment. Increasingly, the sustainability of the entire seafood supply chain is being considered, taking into account the carbon footprint of all processes from capture to transport to market. This process can be evaluated using a Life Cycle Assessment (LCA) approach, which can be used to measure the environmental impacts of a fishery from ocean to plate.
Need: At present, there are no estimations of the potential environmental impacts resulting from the use of fossil fuels in the south-east Giant Crab fishery operating in Tasmania and Victoria.
Objectives: Quantify the south-east Giant Crab fishery's carbon footprint
Method: Use the LCA approach to estimate the fossil fuel use effects categorised as global warming potential, acidification potential, eutrophication potential, ozone depletion potential, and cumulative energy demand.
Outcome: Increased knowledge regarding the carbon footprint of the fishery to assess its environmental sustainability.
Supervisory Team:
Brief project description:
Australia’s south-east marine ecosystems have undergone dramatic changes over the past three decades. This project will integrate multiple lines of evidence to test for a system-wide productivity change that spans shelf and coastal reef ecosystems. The project’s findings have implications for the management of fisheries and conservation of south-east marine ecosystems. Several studies independently point to productivity declines in different south-east marine ecosystems.
This project will integrate data from trawl fisheries, reef surveys and macroalgal productivity estimates to ask if these disparate trends share a common driver. The project will use ecosystem modelling tools to ask if fishing and climate are causing system wide change in productivity. This project will require the use of ecosystem modelling tools and the R program.
Training in modelling will be provided to help the candidate develop these valuable skills that are in high demand by employers. Applicants should be enthusiastic about learning modelling techniques and their application to ecosystem management.
Supervisory Team:
- Primary supervisor: Mohamed Basseer Codabaccus
- Andrew Trotter
- Ernest Chuku
Brief project description:
The commercial production of oysters in the region of pipe clay is a major concern due to decline in growth and condition over the past few years. Historically, this region has been very productive (10% Tasmanian oyster production) and has sustained oyster farming for over 40 years. To date, factors leading to the decline in production is unknown.
To facilitate narrowing research focus, an assessment of the nutritional condition of oysters grown in impacted areas of Pipe Clay is critical. Thus, the project focus on understanding whether an imbalance in nutrient exist in oysters grown in impacted areas.
This is highly relevant to inform on next steps for managing oyster farming in this area.
Oceans and cryosphere
Primary supervisor:
Supervisory team:
Brief project description:
The Denman Glacier in East Antarctica offers a direct pathway to the Aurora Basin. It is highly susceptible to ice loss and a critical factor in understanding sea-level rise and climate change. The Denman Glacier has recently been rapidly thinning and retreating, losing mass at an accelerating rate due to the intrusion of warm ocean water beneath its ice shelf. Glacial meltwaters released into the ocean can influence nutrient dynamics, carbon cycling, and primary productivity, offering insights into how glacial retreat in Antarctica impacts marine ecosystems and biogeochemical processes in a rapidly changing polar environment.
The region shows clear differences in ocean and sea ice conditions between the Eastern and Western sides of the Denman glacier. The Eastern side is characterised by long periods of sea-ice coverage, and low surface Chla (an indicator of primary productivity). Conversely, the Western side is characterised by long periods of open water, and high surface Chla (Figure 1). In this context, the project aims to analyse ocean biogeochemical variables from both the eastern and western sides of the Denman glacier. The goal is to assess potential spatial variations that could be indicative of differing glacial, oceanographic, and biological processes. This research will contribute to understanding the regional influence of the glacier on surrounding marine ecosystems and biogeochemical cycles.
The honours student will participate in Antarctic fieldwork between March and May 2025 on the RSV Nuyina to collect full depth seawater profiles from the CTD rosette. Samples will be processes onboard for Chlorophyll-a (Chl-a), macronutrients, δ18O (oxygen isotopes), particulate and dissolved organic carbon and nitrogen (POC/PON, DOC/DON), biogenic silica (BSi), and flow cytometry for phytoplankton analysis following international protocols. Seawater from both sides of the ice shelf will be analysed to determine whether there are significant differences in nutrient distributions, biological productivity, and glacial meltwater fluxes between the eastern and western sides of the glacier front. The suite of biogeochemical and biological variables will also be used to evaluate what processes drive the regional difference in phytoplankton blooms east and west (Figure 1) of the Denman/Shackleton system. This is a key research question for the ACEAS program during DMV. The honours project will produce key knowledge that will directly contribute to the research outcomes of ACEAS scientists from other working groups.
Voyage Timing - The DMV will be the first marine science campaign for the newly commissioned RSV Nuyina. DMV is a dedicated 68 days marine science voyage scheduled for late February-April 2025 (Hobart-Hobart). We plan to arrive on site on the 7th of March 2025 and depart around the 18th of April 2025. Arrival in Hobart is envisaged around the 28th of April 2025.
Voyage Location - The voyage will transit from Hobart to the Denman Glacier located between Casey and Davis research stations. DMV activities will be focused in 3 areas west and east of Shackleton ice shelf. The eastern side may show signs of warm water intrusion toward the ice shelf grounding line, while the west shows a recurrent phytoplankton bloom that could be fed by the iron meltwater pump. The voyage will also undertake investigations in East Bruce Rise and West Bruce Rise, as well as on the volcanic seamounts located at 60°S 100°E.
Timeline:
February 2025:
Begin literature review on Denman Glacier and Southern Ocean biogeochemistry.
Training on sampling collection techniques (Chl-a, BSi, POC/PON, DOC/DON, nutrients, isotope analysis, flow cytometry).
March - April 2025:
Field work (ship-based filtrations: Chl-a, BSi, POC/PON, DOC/DON)
Sample analyses of Chl-a and macronutrients onboard
Microscopy analysis of phytoplankton
Prepare POC/PON filters for analysis at CSL
Data entry and initial statistical analysis
IMAS introduction seminar
May - June 2025:
δ18O and POC/PON analysis at CSL
DOC/DON analysis at UTAS plant science
Complete remaining analyses (BSi, flow cytometry).
Hydrography analyses
Data entry and initial statistical analysis.
July - August 2025:
Data synthesis, visualization, and comparative analysis between the east and west glacier zones.
Begin drafting honours thesis.
September - October 2025:
Finalise thesis and prepare for submission.
Presentations at ACEAS and final honours project seminars.
Primary supervisor:
Supervisory team:
Brief project description:
The formation of Antarctic Bottom Water (AABW) ventilates the abyssal ocean and helps drive global ocean circulation, thus making it a key component of our climate system. Yet recent observations show that AABW is warming, freshening, and reducing in volume (Zhou et al., 2023; Gunn et al. 2023; Johnson et al., 2024).
This observed freshening and contraction has been attributed to upstream changes on the continental shelf where dense source waters form (Zhou et al., 2023). However, conclusively linking these changes with upstream drivers remains challenging because of scarce observations and limited knowledge of AABW transport timescales.
This project aims to help address this by quantifying the advection timescales of AABW from the four known formation sites using an ocean-sea model that realistically simulates the formation processes of AABW (Kiss et al., 2020). Advection timescales will be estimated using a combination of existing passive tracer experiments (Solodoch et al., 2022) and Lagrangian particle trajectories, with a goal of quantifying and comparing timescales between the two modelling approaches.
An outcome of this work will be to provide a model-based estimate of AABW advection timescales that will assist with interpreting and linking observed changes with upstream drivers.
Skills students will develop during this research project:
The student will develop python programming skills by working with gridded data from an ocean-sea model, along with Lagrangian particle trajectory data. They will also develop skills in high performance computing via use of the National Computing Infrastructure, as well as visualisation skills through data analysis and figure preparation.
Supervisory team:
Brief project description:
Recent studies have reported likely catastrophic consequences for emperor penguin breeding colonies due to changes in the extent and earlier collapse of fast ice in regions known to be important sites for penguin breeding (Fretwell et al 2024 https://doi.org/10.1017/S0954102024000130, Fretwell et al 2023 https://doi.org/10.1038/s43247-023-00927-x and LaRue et al 2024 https://doi.org/10.6084/m9.figshare.c.7095355).
These studies have relied on satellite remote sensing of fast ice in recent years, and extrapolate recent changes to fast ice to suggest that the species will face severe restrictions on breedin ghabitat, and therefore breeding success in coming years (Labrouse et al 2024 https://doi.org/10.1126/sciadv.adg8340, Fraser et al 2023 https://doi.org/10.1029/2022RG000770).
ACCESS-OM2 is a high resolution ocean-sea ice model (Kiss et al 2020 https://doi.org/10.5194/gmd-13-401-2020) that reproduces ecologicall relevant variables with remarkable fidelity. This model has been run out to 2050 with realistic forcing (li et al 2023 https://doi.org/10.1038/s41586-023-05762-w).
This project will use the future projections from ACCESS-OM2 to assess changes in fast ice extent and timing of break-out. On completion of this assessment the project will then map location of current emperor penguin colonies to assess impact of changes to fast ice, before evaluating the potential loss of total suitable habitat for emperor penguin breeding over this time period.
Primary supervisor:
Supervisory team:
- Joe Cresswell
- George Rowland
Brief project description:
The ocean contains 60 times more carbon than the atmosphere. Changes in the ocean's carbon cycle affect atmospheric carbon dioxide concentrations, and have the capacity to change our climate on the timescale of a human lifespan. One feedback of concern is the relationship between the biological carbon pump and temperature. The biological carbon pump is a key component of carbon sequestration in the ocean. Through this pump carbon is removed from surface waters by phytoplankton and a fraction of this carbon is ultimately delivered to the deep ocean through gravitational sinking and other processes. It has been proposed that under a warming climate, microbial decomposition of sinking carbon accelerates, resulting in less carbon reaching the deep sea, a weakening of the biological carbon pump, and increased atmospheric carbon dioxide- a vicious cycle. While there is some evidence supporting this proposal, to find firm evidence we can look to the past when climate changed dramatically.
This project will use sediment cores from the Southern Indian Ocean that span the warming that occurred at the end of the last ice age. We have three sediment cores located in roughly the same place but at different water depths, of between ~1000 and 3000m. These cores allow us to reconstruct the vertical distribution of water properties, similar to an oceanographic CTD profile. You will use geochemical techniques to reconstruct the carbon burial and related environmental conditions from the three depths during the peak of the last ice age and during the subsequent warming. The results should help us understand how the fate of exported carbon changes with climate.