Current

  • Dr Lavenia Ratnarajah

    I completed my PhD in 2017 at the University of Tasmania investigating iron recycling by marine animals in the Southern Ocean. In 2023, I was awarded an Australian Research Council Discovery Fellowship alongside Prof’s Andrew R. Bowie and Kerrie Swadling (UTAS), and Prof Alessandro Taglibue (University of Liverpool). Through this grant, I am supervising Millie and Knut on their postdoctoral and PhD projects respectively. Aside from this, I am involved in several project that investigate iron and carbon cycling in marine ecosystems, and am currently leading a study on the role of mesoscale eddies in driving carbon export.

  • Millie Goddard-Dwyer

    Post doctoral research fellow

    Millie Goddard-Dwyer is a post-doc at IMAS working on constraining Antarctic krill's role in nutrient cycling under both current conditions and in response to climate change driven warming. She completed her PhD in 2024 at the University of Liverpool on the organic matter linkages between trace metal biogeochemistry and microbial activity.

  • Knut Heinantz

    PhD student

    Knut started his PhD in November 2023 and immediately headed to Antarctica to undertake the fieldwork component of his PhD project. He has extensive experience in field-going expeditions, accumulating over 300 days at sea as part of his multidisciplinary projects, such as Trophic transfer efficiency in the Benguela Upwelling System (TRAFFIC) with the German Institute of Marine Ecosystems and Fisheries Science (IMF). Knut’s PhD project is investigating the drivers of iron content in marine zooplankton in the global ocean.

Past

  • Dr Abigail R. Smith

    PhD student

    Abbie’s PhD project investigated the distribution and availability of iron in the Antarctic coastal ocean. She considered geological and biological sources from sea ice and sediments to pelagic recycling by higher trophic levels, with a focus on bioavailability through complexation by iron-binding ligands. She completed her PhD in August 2022 and commenced a post-doctoral position at the Australian Antarctic Program Partnership. Recently, she was awarded an on-going position as a Fisheries Acoustics Scientist, working with the Australian Antarctic Division to sustainably manage the Antarctic krill fishery and conserve marine ecosystems in the Southern Ocean.

  • Talitha Nelson

    Honours student

    Talitha’s Honours project quantified iron recycling versus carbon export by Antarctic krill, Euphausia superba. She recently started her PhD project at the University of Tasmania.

  • Amy Lawrence

    Honours student

    Amy’s Honours project examined the variability in iron content in Southern Ocean salps, Salpa thomsoni.

  • Claudia Dix

    Honours student

    Claudia’s Honours project used stoichiometry to investigate nutrient recycling in marine ecosystems.