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River and Groundwater Ecology Lab

Science supporting groundwater and river management.

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Our research combines freshwater ecology, groundwater science and ecotoxicology, using field and laboratory studies, eDNA and invertebrate analyses to understand ecosystem health, connectivity and human impacts.

Our research is driven by a commitment to protect rivers and groundwater ecosystems for future generations.

Through multidisciplinary approaches spanning freshwater ecology and ecotoxicology, we investigate the factors that influencing ecosystem health, biodiversity, and resilience, and assess how human activities influence aquatic environments.

We combine macroinvertebrate and stygofauna surveys, eDNA, manipulative experiments, and in situ monitoring to understand how organisms interact with their environment. With a particular focus on groundwater, one of Earth’s least understood ecosystems, our work advances knowledge of biodiversity, ecosystem function, and responses to environmental change. By integrating traditional ecological knowledge and two-way science, and working closely with communities, government, and industry, we deliver research that supports evidence-based freshwater resource management.

We never know the worth of water till the well is dry.

Thomas Fuller, 1732

Our research

Our research is organised around three interconnected themes that collectively advance the sustainable management of freshwater ecosystems.

Investigating connections between GDEs.

  • Investigating surface water-groundwater interactions, using isotopes and eDNA as tracers.
  • Understanding tree dependency on groundwaters.
  • Understanding the impacts of surface contaminants on groundwater ecosystems.

We develop science-based tools and indicators to support the assessment and management of freshwater ecosystems.

  • Devising new methods for assessing ecosystem health including the use of eDNA.
  • Monitoring groundwater health within the Murray-Darling Basin.
  • Assessing river and groundwater health using biotic and abiotic indicators.
  • Understanding how water management impacts biodiversity and ecosystem functions.
  • Work closely with government, industry, community and international collaborators.

We seek to improve understanding of biodiversity, ecological interactions, and ecosystem processes within freshwater environments, particularly groundwater systems.

  • Biodiversity within groundwaters.
  • Ecotoxicology experiments investigating the impacts of contaminants on stygofauna and surface macroinvertebrates.
  • Manipulative experiments to understand the impacts of water drawdown on groundwater biota.
  • Understanding the roles and functions of stygofauna and microbes in groundwater ecosystems.
  • Developing and refining eDNA methods for use in groundwater ecosystems.

News and opportunities

The team recently attended the International Conference for Subterranean Biology (ICSB) in Mangalia, Romania. Here Prof. Hose presented recent research on  ‘The influence of groundwater drawdown on the survival and distribution of stygofauna’  and Dr Korbel presented recent findings in the Darling Baaka river with a talk titled ‘How do groundwater and surface water ecosystems  interact?’. The Global Research into eDNA in Groundwater (GReG) also had an opportunity to meet at this conference and discuss upcoming work.

Dr Korbel followed this with a presentation at the International Association of Hydrogeology (IAH) in Budapest, where she  presented the talk ‘What do we know about groundwater ecosystems in Murray Darling Basin, Australia?’

  • Di Cairano, M., Hose, G. C., & Korbel, K. L. (2026). Temporal changes in the water quality and ecology of an alluvial aquifer through an agricultural crop cycle. Science of the Total Environment, 1016, 181433.
  • Thornhill, J., White, N. E., Korbel, K. L., Saccò, M., & Guzik, M. T. (2026). Taxonomy‐Independent eDNA Approaches in Groundwaters: A Prospective Tool for Improved Ecological Assessments. Freshwater Biology, 71(10), e70312.
  • Huggins, X., et al.  (2026). Groundwater-dependent ecosystems are missing from global research and policy agendas.
  • Mammola, Stefano, et al. "Subterranean environments contribute to three‐quarters of classified ecosystem services." Biological Reviews 101.3 (2026): 1582-1605.
  • Saccò, M., Elmasri, A., ... Korbel, K.L. & Guzik, M.T. (2025). Advancing subterranean conservation through Global Research on eDNA in Groundwaters (GReG). Subterranean biology, 53, 31-40.

We have a number of opportunities to work with us including honours, Masters and PhD opportunities. Please contact us if you are interested in freshwater ecosystems and we will advise the current opportunities, or look on the University of Sydney Portal.

The Global Research on eDNA in Groundwaters (GReG) project was established by Dr Korbel, and her co-leads Dr Guzik (Adelaide University) and Dr Sacco (Curtin University) in 2024 as an international collaboration using environmental DNA (eDNA) to assess groundwater biodiversity. It has to data collected samples across 47 sites in 19 countries across Europe, Australia, Asia, Africa, and North America.

GReG aims to standardise eDNA methods, improve detection of subterranean species, and strengthen groundwater conservation globally. Key outcomes include establishing a global research network, developing harmonised sampling and analysis protocols, generating comparable biodiversity datasets, and advancing evidence-based management of vulnerable groundwater ecosystems.

Members of the GReG team meeting in Romania

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Our team

Contact us

For further information about the River and Groundwater Ecology Lab, please contact: