Postdoctoral Fellowship – Understanding Mouse Impacts on Sub-Antarctic Marion Island
Postdoctoral Fellowship: Understanding Mouse Impacts on Sub-Antarctic Marion Island at Department of Plant and Soil Sciences, University of Pretoria. (image: Otto Whitehead)
An exciting postdoctoral fellowship is offered on our South African National Antarctic Programme project “Towards a comprehensive understanding of impacts of the invasive house mouse on the terrestrial biodiversity of Marion Island”. Sub-Antarctic Marion Island is one of the most isolated landmasses globally. The house mouse invaded the island in the early 1800s, and its impacts are manifold, and intensifying under climate change. This project aims to fill gaps in understanding mouse impacts on the island, with the purpose of informing the planned mouse eradication. This position will provide exciting opportunities to work on excellent long-term and/or spatially well-sampled datasets and inform island management.
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Additionally, opportunities to collaborate locally and internationally exist within this project. We are looking for a candidate with expertise in one or several of the following, or related fields: community ecology, isotope ecology, entomology, botany, trait ecology; or with an ability to learn the necessary skills. Their primary responsibility will be conducting and leading research into one or several of these themes. Opportunities for student supervision and teaching also exist.
The United Nations has designated May 22 as the International Day for Biological Diversity (IDB), a day to reflect on the vital role biodiversity plays in sustaining life on Earth. The 2025 theme, “Harmony with Nature and Sustainable Development,” underscores the importance of conserving biodiversity to ensure a sustainable future for both people and the planet. It is a timely reminder that a thriving natural world is the foundation of human well-being and a cornerstone for achieving the Sustainable Development Goals.
In South Africa, this day holds special meaning for the South African National Antarctic Programme (SANAP). Operating across three key research stations — Antarctica, Marion Island (part of the Prince Edward Islands), and Gough Island — SANAP plays a crucial role in understanding and preserving the unique biodiversity of the sub-Antarctic and Antarctic regions. These remote and fragile ecosystems are home to countless species, many of which are found nowhere else on Earth.
For decades, SANAP-supported scientists have been at the forefront of biodiversity research in these regions. Their work includes long-term monitoring of bird and marine mammal populations, studies on invasive species, climate change impacts, and ecosystem dynamics. Through rigorous field research and environmental stewardship, SANAP contributes to global knowledge and conservation efforts, ensuring these pristine environments continue to thrive for generations to come.
On this International Day for Biological Diversity, SANAP reaffirms its commitment to protecting the biodiversity of the Southern Ocean and its islands — not only for their intrinsic value but also for the essential role they play in the global ecosystem.
The Agreement on the Conservation of Albatrosses and Petrels (ACAP) has announced that “Marine Protected Areas – Safeguarding our Oceans” is to be its theme for this year’s 
MINISTER CREECY LAUNCHES THE 3RD NATIONAL STATUS OF BIOLOGICAL INVASIONS AND THEIR MANAGEMENT IN SOUTH AFRICA
Thirdly, invasive species are devastating the unique and sensitive biodiversity of the Prince Edward Islands. For the first time, this report provides a separate assessment of the status of biological invasions and their management on the Prince Edward Islands. Although these islands are part of South Africa, their remote location and unique biodiversity warrant a separate assessment. Findings highlight the devastating impact of the house mouse, which is alien to the Marion Island. The mice feed on plants, and small animals including endangered seabirds. A bold plan to eradicate mice from the island has been developed and is due to be implemented in 2027. The eradication of mice from Marion Island is essential if its unique biodiversity is to be preserved.
The last session within the 
Above (l-r): Vonica Perold, Tegan Walker, Shamiso Banda, Danielle Keys, Eleanor Weideman
To make your sponsorship to Mouse-Free Marion go to 
Michelle Greve chaired another session on Ecosystems “Major threats to terrestrial sub-Antarctic ecosystems – climate change and invasions” , including how climate and species interactions are driving leaf endophyte communities, how warming directly, and indirectly (through heightened microbial decomposition and nutrient release) affects plant performance) affect plant growth, and how vegetation communities on Marion Island have changed since the 1960s on a warmer, drier and more invaded Marion Island. The session ended with a summary of the knowledge garnered from the National Status Report on Invasions, which includes a chapter on the Prince Edward Islands, and summarised all we know about invasions to the offshore territory. 
Michelle(right) gave an introduction and then was followed by oral presentations. (Above, l-r: Joshua Tsamba, Michelle Greve, Laura Fernadez-Winzer, Stephni van der Merwe, Nita Pallett) (Photo Credit: Michelle Greve)
Another student Janine Schoombie of Peter le Roux of University of Pretoria presented in the ad hoc session chaired by Christel Hansen. They only arrived on 30 November after the Prince Edward Island scientific voyage. “Studies of wind, plants and seabirds on Marion Island”. (
