Stefan Caddy-Retalic

APrf Stefan Caddy-Retalic

School of Biological Sciences

College of Science

Available For Media Comment.


My research focuses on the future of urban trees in a changing climate. I am particularly interested in how cities can develop diverse, resilient urban forests that provide shade, cooling, biodiversity, amenity and other benefits as climates become hotter and drier. Through the Future Trees initiative, I work with researchers, governments and industry to assess the vulnerability of Adelaide’s urban forest, identify and trial future-ready tree species, and improve the evidence used in tree selection, management and urban planning.

At the Waite Arboretum, I am working to strengthen the role of living tree collections as research infrastructure. This includes developing research-ready collections, experimental tree plantings and improved systems for recording and sharing information about tree provenance, performance and management. My broader research background spans vegetation ecology, plant responses to environmental gradients, biodiversity monitoring and climate-change impacts, using approaches including ecological surveys, plant functional traits, stable isotopes, molecular methods and spatial analysis.

A central theme of my work is translating ecological knowledge into practical decisions. Alongside my university research, I have extensive experience in environmental policy, climate adaptation and cross-government programs. I work closely with councils, government agencies, arborists and other urban-forest practitioners to develop research that responds to real-world problems and helps create greener, healthier and more climate-resilient cities.

Date Institution name Country Title
2014 - 2017 University of Adelaide Australia PhD
2007 - 2008 Flinders University Australia Honours (1st Class)
2003 - 2006 Flinders University Australia Bachelor of Innovation & Enterprise
2003 - 2006 Flinders University Australia Bachelor of Science

Year Citation
2026 Kandulu, J., Soebarto, V., Caddy-Retalic, S., Lowe, A., Kumar, P., Tefera, Y., & Williams, C. (2026). Advancing context-sensitive valuation of street tree benefits in contrasting urban socioeconomic settings. Urban Forestry and Urban Greening, 122, 129516-1-129516-12.
DOI
2025 Williams, C., Byrne, C., Evenden, S., Soebarto, V., Caddy-Retalic, S., Williams, C., . . . Lowe, A. (2025). Urban green space provision: the case for policy-based solutions to support human health. Medical Journal of Australia, 222(3), 110-113.
DOI Scopus8 WoS8 Europe PMC1
2022 Munroe, S. E. M., McInerney, F. A., Guerin, G. R., Andrae, J. W., Welti, N., Caddy-Retalic, S., . . . Sparrow, B. (2022). Plant families exhibit unique geographic trends in C4 richness and cover in Australia. PLoS One, 17(8), e0271603-1-e0271603-21.
DOI Scopus8 WoS8 Europe PMC1
2021 Munroe, S. E. M., McInerney, F. A., Andrae, J., Welti, N., Guerin, G. R., Leitch, E., . . . Sparrow, B. (2021). The photosynthetic pathways of plant species surveyed in Australia’s national terrestrial monitoring network. Scientific Data, 8(1), 97-1-97-10.
DOI Scopus13 WoS11 Europe PMC3
2021 Dorey, J. B., Rebola, C. M., Davies, O. K., Prendergast, K. S., Parslow, B. A., Hogendoorn, K., . . . Caddy-Retalic, S. (2021). Continental risk assessment for understudied taxa post-catastrophic wildfire indicates severe impacts on the Australian bee fauna. GLOBAL CHANGE BIOLOGY, 27(24), 17 pages.
DOI Scopus26 WoS25 Europe PMC10
2020 Dong, N., Prentice, I. C., Wright, I. J., Evans, B. J., Togashi, H. F., Caddy-Retalic, S., . . . Lowe, A. J. (2020). Components of leaf-trait variation along environmental gradients. New Phytologist, 228(1), 82-94.
DOI Scopus200 WoS176 Europe PMC93
2020 Sparrow, B. D., Foulkes, J. N., Wardle, G. M., Leitch, E. J., Caddy-Retalic, S., van Leeuwen, S. J., . . . Lowe, A. J. (2020). A vegetation and soil survey method for surveillance monitoring of rangeland environments. Frontiers in Ecology and Evolution, 8, 157-1-157-18.
DOI Scopus48 WoS44
2020 Caddy-Retalic, S., Wardle, G. M., Leitch, E. J., McInerney, F. A., & Lowe, A. J. (2020). Vegetation change along a Mediterranean to arid zone bioclimatic gradient reveals scale-dependent ecotone patterning. Australian Journal of Botany, 68(8), 574-586.
DOI Scopus5 WoS4
2019 Caddy-Retalic, S., Hoffmann, B. D., Guerin, G. R., Andersen, A. N., Wardle, G. M., McInerney, F. A., & Lowe, A. J. (2019). Plant and ant assemblages predicted to decouple under climate change. Diversity and Distributions, 25(4), 551-567.
DOI Scopus16 WoS15
2018 Baruch, Z., Jones, A., Hill, K. E., McInerney, F., Blyth, C., Caddy-Retalic, S., . . . Breed, M. (2018). Functional acclimation across microgeographic scales in Dodonaea viscosa. AoB Plants, 10(3), ply029-1-ply029-15.
DOI Scopus5 WoS5 Europe PMC3
2018 Howard, S., McInerney, F., Caddy-Retalic, S., Hall, P., & Andrae, J. (2018). Modelling leaf wax n-alkane inputs to soils along a latitudinal transect across Australia. Organic Geochemistry, 121, 126-137.
DOI Scopus39 WoS36
2018 Baruch, Z., Caddy-Retalic, S., Guerin, G. R., Sparrow, B., Leitch, E., Tokmakoff, A., & Lowe, A. J. (2018). Floristic and structural assessment of Australian rangeland vegetation with standardized plot-based surveys. PLoS ONE, 13(9), e0202073-1-e0202073-18.
DOI Scopus5 WoS5 Europe PMC1
2018 Dormontt, E., van Dijk, K., Bell, K., Biffin, E., Breed, M., Byrne, M., . . . Lowe, A. (2018). Advancing DNA barcoding and metabarcoding applications for plants requires systematic analysis of herbarium collections-an Australian perspective. Frontiers in Ecology and Evolution, 6(SEP), 1-12.
DOI Scopus73 WoS64
2017 Baruch, Z., Christmas, M., Breed, M., Guerin, G., Caddy-Retalic, S., McDonald, J., . . . Lowe, A. (2017). Leaf trait associations with environmental variation in the wide-ranging shrub Dodonaea viscosa subsp. angustissima (Sapindaceae). Austral Ecology, 42(5), 553-561.
DOI Scopus21 WoS19 Europe PMC8
2017 Dong, N., Colin Prentice, I., Evans, B., Caddy-Retalic, S., Lowe, A., & Wright, I. (2017). Leaf nitrogen from first principles: field evidence for adaptive variation with climate. Biogeosciences, 14(2), 481-495.
DOI Scopus79 WoS76
2017 Caddy-Retalic, S., Andersen, A. N., Aspinwall, M., Breed, M. F., Byrne, M., Christmas, M., . . . Lowe, A. J. (2017). Bioclimatic transect networks: powerful observatories of ecological change. Ecology and Evolution, 7(13), 4607-4619.
DOI Scopus24 WoS22 Europe PMC10
2017 Bissett, A., Fitzgerald, A., Court, L., Meintjes, T., Mele, P. M., Reith, F., . . . Young, A. (2017). Erratum: Introducing BASE: The Biomes of Australian Soil Environments soil microbial diversity database [GigaScience. 5, 1, (2016) (1-11)] DOI: 10.1186/s13742-016-0126-5. Gigascience, 6(5), 1.
DOI Scopus4 WoS3 Europe PMC1
2016 Bissett, A., Fitzgerald, A., Meintjes, T., Mele, P. M., Reith, F., Dennis, P. G., . . . Ferrari, B. C. (2016). Introducing BASE: the Biomes of Australian Soil Environments soil microbial diversity database. GigaScience, 5(1), 1-11.
DOI Scopus202 WoS203 Europe PMC139
2015 Campbell, C. A., Lefroy, E. C., Caddy-Retalic, S., Bax, N., Doherty, P. J., Douglas, M. M., . . . West, J. (2015). Designing environmental research for impact. Science of the Total Environment, 534, 4-13.
DOI Scopus40 WoS41 Europe PMC8
2011 Caddy-Retalic, S., Benkendorff, K., & Fairweather, P. (2011). Visualizing hotspots: Applying thermal imaging to monitor internal temperatures in intertidal gastropods. Molluscan Research, 31(2), 106-113.
Scopus21 WoS22

Year Citation
2026 Delaporte, K., & Caddy-Retalic, S. (2026). Future Trees project in South Australia. In V. Soebarto, & L. Arakawa Martins (Eds.), International symposium on Green Urban Futures. Adeladie.
2023 White, S., Miller, J., Taylor, R., Roe, T., & Caddy-Retalic, S. (2023). Mitigating urban heat through spatial data, good communications, trees and building capacity of local and state government in Adelaide. In P. Rajagopalan, V. Soebarto, & H. Akbari (Eds.), 6TH INTERNATIONAL CONFERENCE ON COUNTERMEASURES TO URBAN HEAT ISLANDS, UHI 2023 (pp. 833-842). AUSTRALIA, RMIT Univ, Sch Property Construct & Project Management, Melbourne: RMIT PUBLISHING.

Year Citation
2021 Munroe, S., McInerney, F., Andrae, J., Welti, N., Guerin, G., Leitch, E., . . . Sparrow, B. (2021). Plants down under: defining and mapping the photosynthetic pathway of plants across Australia. Poster session presented at the meeting of TERN Science Symposium.
2017 Caddy-Retalic, S., Hoffmann, B., Guerin, G. R., Andersen, A., Wardle, G., McInerney, F., & Lowe, A. (2017). The potential decoupling of plant and ant communities with climate change. Poster session presented at the meeting of Ecological Society of America Annual Meeting. Portland, USA.
2016 Guerin, G. R., Caddy-Retalic, S., Christmas, M., & Lowe, A. J. (2016). Projected climate change implications for the South Australian flora. Poster session presented at the meeting of 'Botany 2016 – Past, Present and Future' Symposium. South Australian NRM Science Conference.. The University of Adelaide.
2015 Lowe, A. J., Guerin, G. R., caddy-retalic., & Christmas. (2015). Species and gene turnover along environmental gradients - windows into the future. Poster session presented at the meeting of Interconnectedness. Ecological Society of Australia Annual Conference 2015. The Hilton Hotel, Adelaide.
2015 Baruch, Z., Guerin, G. R., Leitch, E., Tokmakoff, A., Caddy-Retalic, S., Sparrow, B., & Lowe, A. J. (2015). Continental analysis of Australian rangeland vegetation: floristic and structural diversity. Poster session presented at the meeting of Interconnectedness. Ecological Society of Australia Annual Conference 2015. The Hilton Hotel, Adelaide.
2013 Lowe, A. J., Caddy-Retalic, S., Guerin, G. R., Andersen, A., Rossetto, M., van Leeuwen, S., & Sweeney, S. (2013). TREND and the Australian Transect Network: windows to our future environment. Poster session presented at the meeting of TREND Human Dimensions Symposium. Adelaide, SA.

Year Citation
2025 Delaporte, K., Marker, K., Blyth, C., Chan, A., & Caddy-Retalic, S. (2025). Predicting Climate impacts on Adelaide's urban trees through expert elicitation.
2023 Delaporte, K., Caddy-Retalic, S., Dorey, J., & Dormontt, E. (2023). Future Trees Project Phase 1: Benchmarking Adelaide's Urban Forest.
2022 Belder, R. L., Delaporte, K. D., & Caddy-Retalic, S. (2022). Urban tree protection in Australia: Review of regulatory matters.
2015 Guerin, G. R., Sweeney, S. M., Pisanu, P., Caddy-Retalic, S., & Lowe, A. J. (2015). Establishment of an ecosystem transect to address climate change policy questions for natural resource management.

Year Citation
2008 Caddy-Retalic, S. (2008). Thermoregulatory ability in the temperate intertidal gastropod Nerita atramentosa. (Flinders University).

Year Citation
2014 Lowe, A. J., & Caddy-Retalic. (2014). Will the climate debate end up being fought in court?. The Conversation.
2012 lowe., & Caddy-retalic. (2012). Genetically linked, a continent apart: the rise of DNA barcoding. The Conversation.
2012 Caddy-Retalic, S., Caddy-Retalic, S., & Lowe, A. J. (2012). DNA barcoding: a better way to discover species. The Conversation.

Year Citation
2020 Munroe, S., McInerney, F., Andrae, J., Welti, N., Guerin, G., Emrys, L., . . . Sparrow, B. (2020). The Photosynthetic Pathways of Plant Species surveyed in TERN Ecosystem Surveillance Plots.
DOI
2016 Baruch, Z., Christmas, M., Breed, M. F., Guerin, G. R., Caddy-Retalic, S., McDonald, J., . . . Lowe, A. J. (2016). Leaf trait associations with environmental variation in the wide-ranging shrub Dodonaea viscosa subsp. angustissima (Sapindaceae) Part 1: Latitude.
DOI
2016 Baruch, Z., Christmas, M., Breed, M. F., Guerin, G. R., Caddy-Retalic, S., McDonald, J. T., . . . Lowe, A. J. (2016). Leaf trait associations with environmental variation in the wide-ranging shrub Dodonaea viscosa subsp. angustissima (Sapindaceae) Part 2: Elevation.
DOI

Caddy-Retalic, S. & McInerney, F.A. TERN Australian Transect Network (2016) $25K

Caddy-Retalic, S. AW Howard Memorial Trust (2016) $3.5K

Caddy-Retalic, S. & McInerney, F. A. TERN eMast (2015) $4.7K

Caddy-Retalic, S. & McInerney F. A. State Herbarium of South Australia (2015) $1K

Caddy-Retalic, S. Ludwig Leichardt Postgraduate Sciences Fellowship (2014) 3 year stipend

Caddy-Retalic, S. Australian Postgraduate Award (Australian Research Council) (2014) 3 year stipend

Clancy, T., Phinn, S., Lowe, A., Saunders, M., Thurgate, N., Walker, C., Sparrow, B. & Caddy-Retalic, S. (2013) Terrestrial Ecosystem Research Network (NCRIS, Department of Education) $1.6M

Caddy-Retalic, S. & Benkendorff, K. Flinders University Equipment Grant (2008) $5K

Caddy-Retalic, S. Playford Memorial Trust Honours Scholarship (Marine Biology) (2008) $1K

I contribute lectures to topics including:

GEOG7002 Environmental Planning and Governance

Date Role Research Topic Program Degree Type Student Load Student Name
2025 Co-Supervisor Improving the climate resilience of Adelaide's Urban Forest Doctor of Philosophy Doctorate Full Time Ms Tracey Gwendolynn Hart

Date Institution Department Organisation Type Country
2022 - 2022 Attorney Generals Department, Government of South Australia Planning and Land Use Services, Department for Trade and Investment Legislative and political Australia

Date Case Institution Country
2023 - 2023 Parliamentary Inquiry into the Urban Forest Parliament of South Australia Australia

Connect With Me

External Profiles

Other Links