Mr Craig Liddicoat

School of Public Health

College of Health


Craig Liddicoat is an Adjunct Senior Fellow in the School of Public Health at the University of Adelaide. Craig's research interests include environmental microbiomes, spatial epidemiology, and developing knowledge of beneficial connections between human health and exposure to biodiverse vegetation-soil systems. In particular, the role that exposure to (and loss of) biodiverse green space may play in developing immune fitness, mental health and predisposition to both infectious and non-infectious diseases.

My research is exploring connections between environments, their microbial communities (microbiota), and the potential for human health benefits from nature-contact. The notion of a real biological (microbiota-mediated) connection between humans and their environments, and potential benefits for immune training and regulation from exposure to biodiversity (and associated microbial diversity), has originated from immunologists and medical researchers. However, this represents a large multidisciplinary field of research. My research has objectives to:

  • help bridge the gap between environmental science, ecology and human health.
  • investigate if there is support for possible health benefits from exposure to biodiversity in large existing environmental and public health datasets.
  • build knowledge of biological (microbiota-based) connections between environments and exposed populations.
  • help inform new cost-effective nature-based public health interventions.

Date Position Institution name
2020 - ongoing Adjunct Senior Lecturer Flinders University
2020 - ongoing Adjunct Senior Fellow University of Adelaide
2017 - ongoing Senior NRM Scientist (Soil & Land) [Part-time] Department of Environment, Water and Natural Resources (SA)
2011 - 2017 Senior Natural Resource Management Scientist (Soil & Land) Department of Environment, Water and Natural Resources (SA)
2002 - 2011 Environmental Consultant Rural Solutions SA

Date Institution name Country Title
2015 - 2019 University of Adelaide Australia PhD (Bioscience)
1999 - 2001 Flinders University, Adelaide Australia Bachelor of Science in Environmental Science (ecology major)
1990 - 1993 University of Adelaide, Adelaide Australia Bachelor of Engineering (Mechanical, 1st class hons.)

Date Title Institution name Country
2012 Certificate IV in Project Management MBH Management Pty Ltd (RTO ID: 90884) -

Year Citation
2025 Peddle, S. D., Hodgson, R. J., Borrett, R. J., Brachmann, S., Davies, T. C., Erickson, T. E., . . . Breed, M. F. (2025). Practical applications of soil microbiota to improve ecosystem restoration: current knowledge and future directions. Biological Reviews, 100(1), 1-18.
DOI Scopus21 WoS22 Europe PMC7
2025 Hodgson, R. J., Cando-Dumancela, C., Liddicoat, C., Ramesh, S. A., Edwards, R. A., & Breed, M. F. (2025). Strong Host Modulation of Rhizosphere-to-Endosphere Microbial Colonisation in Natural Populations of the Pan-Palaeotropical Keystone Grass Species, Themeda triandra. Ecology and Evolution, 15(6), e71595-1-e71595-16.
DOI Scopus3 WoS3 Europe PMC2
2025 Shabani, F., Ahmadi, M., Lorestani, N., Bibi, S., Esmaeili, A., Lane, T., . . . Ossola, A. (2025). Pedology and Plant Provenance Can Improve Species Distribution Predictions of Australian Native Flora: A Calibrated and Validated Modeling Exercise on 5033 Species. Ecology and Evolution, 15(6), 15 pages.
DOI
2025 Breed, M. F., Liddicoat, C., Sun, X., Ramesh, S., Hawken, S., Lee, K., . . . Robinson, J. M. (2025). Opportunities, challenges, and policy implications of the aerobiome paradigm shift.. mSphere, 10(8), e0020325.
DOI
2025 Hodgson, R. J., Cando-Dumancela, C., Davies, T., Drysdale, V., Fickling, N. W., Liddicoat, C., . . . Breed, M. F. (2025). Arid Soil Bacterial Legacies Improve Drought Resilience of the Keystone Grass, Themeda triandra. Molecular Ecology, 34(18), 15 pages.
DOI
2025 Robinson, J. M., Brame, J., Cando Dumancela, C., Deshmukh, S., Fickling, N. W., Hawken, S., . . . Breed, M. F. (2025). Mapping and cataloguing microbial and biochemical determinants of health: towards a 'database of Salutogenic potential'. Microbial Biotechnology, 10(e70243), 1-7.
DOI Europe PMC1
2025 Hodgson, R. J., Cando-Dumancela, C., Davies, T., Dinsdale, E. A., Doane, M. P., Edwards, R. A., . . . Breed, M. F. (2025). Contrasting Microbial Taxonomic and Functional Colonisation Patterns in Wild Populations of the Pan-Palaeotropical C4 Grass, Themeda triandra. Plant, Cell and Environment, 49(1), 1-17.
DOI
2024 Davies, T., Cando-Dumancela, C., Liddicoat, C., Dresken, R., Damen, R. H., Edwards, R. A., . . . Breed, M. F. (2024). Ecological phage therapy: Can bacteriophages help rapidly restore the soil microbiome?. Ecology and Evolution, 14(8), 10 pages.
DOI Scopus5 WoS5 Europe PMC2
2024 Robinson, J. M., Annells, A., Cavagnaro, T. R., Liddicoat, C., Rogers, H., Taylor, A., & Breed, M. F. (2024). Monitoring soil fauna with ecoacoustics. Proceedings of the Royal Society B: Biological Sciences, 291(2030), 20241595-1-20241595-10.
DOI Scopus11 WoS9
2024 Peddle, S. D., Cando-Dumancela, C., Krauss, S. L., Liddicoat, C., Sanders, A., & Breed, M. F. (2024). Agricultural land-use legacies affect soil bacterial communities following restoration in a global biodiversity hotspot. Biological Conservation, 290, 9 pages.
DOI Scopus3 WoS3
2024 Fickling, N. W., Abbott, C. A., Brame, J. E., Cando-Dumancela, C., Liddicoat, C., Robinson, J. M., & Breed, M. F. (2024). Light-dark cycles may influence in situ soil bacterial networks and diurnally-sensitive taxa. Ecology and Evolution, 14(2), e11018-1-e11018-18.
DOI Scopus1 WoS1 Europe PMC2
2024 Birnbaum, C., Dearnaley, J., Egidi, E., Frew, A., Hopkins, A., Powell, J., . . . Chiarenza, G. (2024). Integrating soil microbial communities into fundamental ecology, conservation, and restoration: examples from Australia. New Phytologist, 241(3), 974-981.
DOI Scopus3 WoS3 Europe PMC2
2024 Brame, J. E., Warbrick, I., Heke, D., Liddicoat, C., & Breed, M. F. (2024). Short-term passive greenspace exposures have little effect on nasal microbiomes: A cross-over exposure study of a Māori cohort. Environmental Research, 252(Pt 1), 9 pages.
DOI
2024 Newman, N. S., Abbott, C. A., Brame, J. E., Cando-Dumancela, C., Fickling, N. W., Liddicoat, C., . . . Breed, M. F. (2024). Childcare centre soil microbiomes are influenced by substrate type and surrounding vegetation condition. Science of the Total Environment, 927, 11 pages.
DOI Scopus1 WoS1 Europe PMC1
2024 Robinson, J. M., Liddicoat, C., Muñoz-Rojas, M., & Breed, M. F. (2024). Restoring soil biodiversity. Current Biology, 34(9), R393-R398.
DOI Scopus13 WoS12 Europe PMC10
2024 Brame, J. E., Liddicoat, C., Abbott, C. A., Edwards, R. A., Robinson, J. M., Gauthier, N. E., & Breed, M. F. (2024). The macroecology of butyrate-producing bacteria via metagenomic assessment of butyrate production capacity. Ecology and Evolution, 14(5), e11239-1-e11239-14.
DOI Scopus3 WoS3 Europe PMC2
2024 Liddicoat, C., Edwards, R. A., Roach, M., Robinson, J. M., Wallace, K. J., Barnes, A. D., . . . Breed, M. F. (2024). Bioenergetic mapping of ‘healthy microbiomes’ via compound processing potential imprinted in gut and soil metagenomes. Science of The Total Environment, 940, 173543.
DOI Scopus4 WoS4 Europe PMC7
2024 Hodgson, R. J., Liddicoat, C., Cando-Dumancela, C., Fickling, N. W., Peddle, S. D., Ramesh, S., & Breed, M. F. (2024). Increasing aridity strengthens the core bacterial rhizosphere associations in the pan-palaeotropical C4 grass, Themeda triandra. Applied Soil Ecology, 201, 105514.
DOI Scopus5 WoS5
2024 Robinson, J., Liddicoat, C., Sun, X., Whiley, H., Ramesh, S., Hawken, S., . . . Breed, B. (2024). The climate change-pollution-aerobiome nexus: a ‘systems thinking’ mini-review. Microbial Biotechnology, 17(10), e70018-1-e70018-10.
DOI Scopus1 WoS1 Europe PMC2
2024 Brame, J. E., Liddicoat, C., Abbott, C. A., Cando-Dumancela, C., Fickling, N. W., Robinson, J. M., & Breed, M. F. (2024). Urban sports fields support higher levels of soil butyrate and butyrate-producing bacteria than urban nature parks. Ecology and Evolution, 14(7), 12 pages.
DOI Europe PMC1
2023 Hodgson, R. J., Liddicoat, C., Cando‐Dumancela, C., Blyth, C., Watson, C. D., & Breed, M. F. (2023). Local and non‐local soil microbiota impede germination of the endangered Acacia whibleyana. Austral Ecology, 48(2), 339-358.
DOI Scopus1 WoS1
2023 Sun, X., Liddicoat, C., Tiunov, A., Wang, B., Zhang, Y., Lu, C., . . . Zhu, Y. G. (2023). Harnessing soil biodiversity to promote human health in cities. Npj Urban Sustainability, 3(1), 8 pages.
DOI Scopus44 WoS42
2023 Robinson, J. M., Hodgson, R., Krauss, S. L., Liddicoat, C., Malik, A. A., Martin, B. C., . . . Breed, M. F. (2023). Opportunities and challenges for microbiomics in ecosystem restoration. Trends in Ecology & Evolution, 38(12), 1189-1202.
DOI Scopus30 WoS23 Europe PMC16
2023 Cando-Dumancela, C., Davies, T., Hodgson, R. J., Liddicoat, C., Peddle, S. D., Watson, C. D., & Breed, M. F. (2023). A practical guide for restoration ecologists to manage microbial contamination risks before laboratory processes during microbiota restoration studies. Restoration Ecology, 31(1), 6 pages.
DOI Scopus8 WoS8
2023 Peddle, S. D., Bissett, A., Borrett, R. J., Bullock, P., Gardner, M. G., Liddicoat, C., . . . Krauss, S. L. (2023). Soil DNA chronosequence analysis shows bacterial community re-assembly following post-mining forest rehabilitation. Restoration Ecology, 31(3), 13 pages.
DOI Scopus14 WoS11
2022 Watson, C. D., Gardner, M. G., Hodgson, R. J., Liddicoat, C., Peddle, S. D., & Breed, M. F. (2022). Global meta-analysis shows progress towards recovery of soil microbiota following revegetation. Biological Conservation, 272, 109592-1-109592-8.
DOI Scopus20 WoS20
2022 Robinson, J., Aronson, J., Daniels, C., Goodwin, N., Liddicoat, C., Orlando, L., . . . Breed, M. (2022). Ecosystem restoration is integral to humanity’s recovery from COVID-19. Lancet Planetary Health, 9(6), 769-773.
DOI Scopus22 WoS15 Europe PMC12
2022 Young, J. M., Liddicoat, C., van Dijk, K. -J., Tabernero, P., Caillet, C., White, N. J., . . . Newton, P. N. (2022). Environmental DNA as an innovative technique to identify the origins of falsified antimalarial tablets—a pilot study of the pharmabiome. Scientific Reports, 12(1), 13 pages.
DOI Scopus7 WoS7 Europe PMC3
2022 Taggart, P. L., Liddicoat, C., Tong, W. H., Breed, M. F., Weinstein, P., Wheeler, D., & Vyas, A. (2022). Gut microbiota composition does not associate with Toxoplasma infection in rats.. Mol Ecol, 31(14), 3963-3970.
DOI Scopus6 WoS7 Europe PMC7
2022 Liddicoat, C., Krauss, S. L., Bissett, A., Borrett, R. J., Ducki, L. C., Peddle, S. D., . . . Breed, M. F. (2022). Next generation restoration metrics: Using soil eDNA bacterial community data to measure trajectories towards rehabilitation targets. Journal of Environmental Management, 310, 114748-1-114748-12.
DOI Scopus26 WoS23 Europe PMC12
2022 Lem, A. J., Liddicoat, C., Bissett, A., Cando-Dumancela, C., Gardner, M. G., Peddle, S. D., . . . Breed, M. F. (2022). Does revegetation cause soil microbiota recovery? Evidence from revisiting a revegetation chronosequence 6 years after initial sampling. Restoration Ecology, 30(8), e13635-1-e13635-14.
DOI Scopus14 WoS12
2022 Brame, J., Liddicoat, C., Abbott, C., Edwards, R., Robinson, J., Gauthier, N., & Breed, M. (2022). Towards the biogeography of butyrate-producing bacteria.
DOI
2021 Prescott, S. L., Wegienka, G., Kort, R., Nelson, D. H., Gabrysch, S., Hancock, T., . . . Berman, B. (2021). Project earthrise: Proceedings of the ninth annual conference of in vivo planetary health. International Journal of Environmental Research and Public Health, 18(20), 101 pages.
DOI Scopus8 WoS5 Europe PMC4
2021 Searle, R., McBratney, A., Grundy, M., Kidd, D., Malone, B., Arrouays, D., . . . Andrews, K. (2021). Digital soil mapping and assessment for Australia and beyond: A propitious future. Geoderma Regional, 24, 13 pages.
DOI Scopus58 WoS45
2021 Cando‐Dumancela, C., Liddicoat, C., McLeod, D., Young, J. M., & Breed, M. F. (2021). A guide to minimise contamination issues in microbiome restoration studies. Restoration Ecology, 29(4), 7 pages.
DOI Scopus12 WoS12
2021 Stanhope, J., Liddicoat, C., & Weinstein, P. (2021). Outdoor artificial light at night: a forgotten factor in green space and health research. Environmental Research, 197, 5 pages.
DOI Scopus33 WoS31 Europe PMC21
2021 Brame, J. E., Liddicoat, C., Abbott, C. A., & Breed, M. F. (2021). The potential of outdoor environments to supply beneficial butyrate-producing bacteria to humans. Science of the Total Environment, 777, 146063.
DOI Scopus36 WoS36 Europe PMC29
2021 Robinson, J. M., Cando-Dumancela, C., Antwis, R. E., Cameron, R., Liddicoat, C., Poudel, R., . . . Breed, M. F. (2021). Exposure to airborne bacteria depends upon vertical stratification and vegetation complexity. Scientific Reports, 11(1), 9516-1-9516-16.
DOI Scopus47 WoS41 Europe PMC32
2021 Robinson, J. M., Watkins, H., Man, I., Liddicoat, C., Cameron, R., Parker, B., . . . Meagher, L. (2021). Microbiome-Inspired Green Infrastructure: A bioscience roadmap for urban ecosystem health. Arq Architectural Research Quarterly, 25(4), 292-303.
DOI Scopus8 WoS8
2021 Baruch, Z., Liddicoat, C., Cando-Dumancela, C., Laws, M., Morelli, H., Weinstein, P., . . . Breed, M. F. (2021). Increased plant species richness associates with greater soil bacterial diversity in urban green spaces. Environmental Research, 196, 12 pages.
DOI Scopus51 WoS42 Europe PMC20
2020 Robinson, J., Cando-Dumancela, C., Antwis, R., Cameron, R., Liddicoat, C., Poudel, R., . . . Breed, M. (2020). Exposure to Airborne Bacteria Depends upon Vertical Stratification and Vegetation Complexity.
DOI
2020 Robinson, J. M., Cando-Dumancela, C., Liddicoat, C., Weinstein, P., Cameron, R., & Breed, M. F. (2020). Vertical Stratification in Urban Green Space Aerobiomes. Environmental Health Perspectives, 128(11), 117008.
DOI Scopus42 WoS41 Europe PMC23
2020 Baruch, Z., Liddicoat, C., Laws, M., Kiri Marker, L., Morelli, H., Yan, D. F., . . . Breed, M. F. (2020). Characterising the soil fungal microbiome in metropolitan green spaces across a vegetation biodiversity gradient. Fungal Ecology, 47, 1-10.
DOI Scopus29 WoS27
2020 Grundy, M. J., Searle, R., Meier, E. A., Ringrose-Voase, A. J., Kidd, D., Orton, T. G., . . . Bennett, J. M. L. (2020). Digital soil assessment delivers impact across scales in Australia and the Philippines. Geoderma Regional, 22, 15 pages.
DOI Scopus6 WoS6
2020 Kidd, D., Searle, R., Grundy, M., McBratney, A., Robinson, N., O'Brien, L., . . . Triantafilis, J. (2020). Operationalising digital soil mapping – Lessons from Australia. Geoderma Regional, 23, 21 pages.
DOI Scopus41 WoS30
2020 Liddicoat, C., Sydnor, H., Cando-Dumancela, C., Dresken, R., Liu, J., Gellie, N., . . . Breed, M. F. (2020). Naturally-diverse airborne environmental microbial exposures modulate the gut microbiome and may provide anxiolytic benefits in mice. Science of the Total Environment, 701, 1-11.
DOI Scopus122 WoS112 Europe PMC85
2019 Bennett, J. M., McBratney, A., Field, D., Kidd, D., Stockmann, U., Liddicoat, C., & Grover, S. (2019). Soil Security for Australia. SUSTAINABILITY, 11(12), 15 pages.
DOI Scopus42 WoS27
2019 Mills, J., Brookes, J., Gellie, N., Liddicoat, C., Lowe, A., Sydnor, H., . . . Breed, M. F. (2019). Relating urban biodiversity to human health with the ‘holobiont’ concept. Frontiers in Microbiology, 10(MAR), 8 pages.
DOI Scopus74 WoS63 Europe PMC41
2019 Liddicoat, C., Weinstein, P., Bissett, A., Gellie, N., Mills, J., Waycott, M., & Breed, M. F. (2019). Can bacterial indicators of a grassy woodland restoration inform ecosystem assessment and microbiota-mediated human health?. Environment International, 129, 105-117.
DOI Scopus57 WoS53 Europe PMC26
2018 Liddicoat, C., Bi, P., Waycott, M., Glover, J., Breed, M. F., & Weinstein, P. (2018). Ambient soil cation exchange capacity inversely associates with infectious and parasitic disease risk in regional Australia. Science of the Total Environment, 626, 117-125.
DOI Scopus34 WoS31 Europe PMC12
2018 Liddicoat, C., Bi, P., Waycott, M., Glover, J., Lowe, A., & Weinstein, P. (2018). Landscape biodiversity correlates with respiratory health in Australia. Journal of Environmental Management, 206, 113-122.
DOI Scopus51 WoS46 Europe PMC30
2016 Liddicoat, C., Waycott, M., & Weinstein, P. (2016). Environmental change and human health: Can environmental proxies inform the biodiversity hypothesis for protective microbial-human contact?. BioScience, 66(12), 1023-1034.
DOI Scopus25 WoS20
2015 Liddicoat, C., Maschmedt, D., Clifford, D., Searle, R., Herrmann, T., Macdonald, L., & Baldock, J. (2015). Predictive mapping of soil organic carbon stocks in South Australia's agricultural zone. Soil Research, 53(8), 956-973.
DOI Scopus37 WoS39
2015 Odgers, N. P., Holmes, K. W., Griffin, T., & Liddicoat, C. (2015). Derivation of soil-attribute estimations from legacy soil maps. Soil Research, 53(8), 881-894.
DOI Scopus17 WoS16

Year Citation
- Arrouays, D., McKenzie, N., Hempel, J., Richer de Forges, A., & McBratney, A. B. (Eds.) (2014). GlobalSoilMap. CRC Press.
DOI

Year Citation
2014 Liddicoat, C., Maschmedt, D., Kidd, D. B., & Searle, R. (2014). Modelling soil carbon stocks using legacy site data, in the mid north region of South Australia. In D. Arrouays, N. McKenzie, J. Hempel, A. C. R. DeForges, & A. McBratney (Eds.), Globalsoilmap Basis of the Global Spatial Soil Information System Proceedings of the 1st Globalsoilmap Conference (pp. 253-259). Orleans, FRANCE: CRC PRESS-TAYLOR & FRANCIS GROUP.
DOI Scopus3 WoS3

Year Citation
2021 Stanhope, J., Liddicoat, C., & Weinstein, P. (2021). Is outdoor artificial light at night confounding studies on green space and health?. Poster session presented at the meeting of Environmental Health Perspectives. New York: The National Institute of Environmental Health Sciences (NIEHS).
DOI
2021 Stanhope, J., Liddicoat, C., & Weinstein, P. (2021). Is outdoor artificial light at night confounding spatial epidemiological studies on greenspace and health?. Poster session presented at the meeting of International Journal of Epidemiology. Virtual: Oxford University Press (OUP).
DOI

Year Citation
- Liddicoat, C., Weinstein, P., Bissett, A., Gellie, N., Mills, J., Waycott, M., & Breed, M. (n.d.). Data Inputs - Can bacterial indicators of a grassy woodland restoration inform ecosystem assessment and microbiota-mediated human health?.
DOI
- Liddicoat, C., Sydnor, H., Cando-Dumancela, C., Dresken, R., Liu, J., Gellie, N., . . . Breed, M. (n.d.). Supporting Data - Naturally-diverse airborne environmental microbial exposures modulate the gut microbiome and may provide anxiolytic benefits in mice.
DOI
- Stanhope, J., Liddicoat, C., & Weinstein, P. (n.d.). Supporting data for article - Outdoor artificial light at night: a forgotten factor in green space and health research.
DOI

Year Citation
2023 Liddicoat, C., Edwards, R., Roach, M., Robinson, J., Wallace, K. J., Barnes, A., . . . Breed, M. (2023). Bioenergetic mapping of ‘healthy microbiomes’ via compound processing potential imprinted in gut and soil metagenomes.
DOI

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