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    • Associate Professor Kathryn McMahon
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    • Associate Professor Kathryn McMahon

      Associate Professor Kathryn McMahon

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Professor Kathryn McMahon

Professor of Marine Ecology

Staff Member Details
Telephone: +61 8 6304 5145
Mobile: 0403 820 104
Email: k.mcmahon@ecu.edu.au
Campus: Joondalup  
Room: JO19.343  
ORCID iD: https://orcid.org/0000-0003-4355-6247

Kathryn is a Professor and Associate Dean (Research) in the School of Science.

Current Teaching

  • Environmental Investigations and Monitoring
  • Coastal and Marine Management

Background / Employment History

  • 2016-present: Senior Lecturer, Edith Cowan University
  • 2012-present: Research Fellow, Edith Cowan University
  • 2011-2012: Lecturer, Edith Cowan University
  • 2005-2010: Postdoctoral Research Fellow, Edith Cowan University
  • 2001-2005: Casual Lecturer and Tutor, University of Queensland
  • 1997-1999: Environmental Officer, Water and Rivers Commission, Western Australia
  • 1995: Research Assistant, University of Western Australia

Professional Memberships

  • Australian Marine Sciences Association
  • Australian Society for Phycology and Aquatic Botany
  • Australian Coastal Society
  • Coastal & Estuarine Research Federation

Research Areas and Interests

I have three main streams of research in coastal biology and ecology largely focusing on seagrass ecosystems. I use a variety of tools and methods such as ‘manipulated’ and ‘observational’ field and laboratory studies using ‘eco-physiological’ and ‘molecular’ tools.

1. Human impacts in coastal ecosystems

  • Largely focusing on impacts through light reduction, climate change, and dredging
  • How do plants respond to different stressors (developing sub-lethal indicators)?
  • What levels of stress can they cope with?
  • What are the consequences of disturbance?

2. Seagrass-grazing interactions

  • How much is consumed?
  • How do plants cope with grazing?

3. Seagrass evolution and taxonomy

  • What are the evolutionary relationships in seagrasses, particularly Posidonia and Halophila?

Qualifications

  • Doctor of Philosophy in the field of Marine Science, The University of Queensland, 2005.
  • Bachelor of Science. Hons (Botany), The University of Western Australia, 2000.

Research Outputs

2023

Journal Articles

  • Carmignani, A., Radice, VZ., McMahon, K., Holman, AI., Miller, K., Grice, K., Richards, Z. (2023). Levels Of Autotrophy And Heterotrophy In Mesophotic Corals Near The End Photic Zone. Frontiers in Marine Science, 10(2023), article number 1089746. https://doi.org/10.3389/fmars.2023.1089746.
  • Hernawan, U., Van Dijk, K., Kendrick, G., Feng, M., Berry, O., Kavazos, C., McMahon, K. (2023). Ocean connectivity and habitat characteristics predict population genetic structure of seagrass in an extreme tropical setting. Ecology and Evolution, 13(7), article number e10257. https://doi.org/10.1002/ece3.10257.
  • Webster, C., Lavery, P., Strydom, S., Billinghurst, J., McMahon, K. (2023). The Ability Of Ruppia Polycarpa To Regenerate From Seed Depends On Seasonal Porewater Salinity Dynamics And Declining Winter Rainfall Could Delay Recruitment. Estuaries and Coasts, 46(5), 1239-1252. https://doi.org/10.1007/s12237-023-01195-w.
  • Dahl, M., McMahon, K., Lavery, P., Hamilton, SH., Lovelock, CE., Serrano Gras, O. (2023). Ranking The Risk Of Co2 Emissions From Seagrass Soil Carbon Stocks Under Global Change Threats. Global Environmental Change, 78(2023), article number 102632. https://doi.org/10.1016/j.gloenvcha.2022.102632.
  • Strydom, S., McCallum, R., Lafratta, A., Webster, C., O'Dea, C., Said, N., Dunham, T., Inostroza, K., Salinas Zapata, C., Billinghurst, S., Phelps, C., Campbell, C., Gorham, C., Bernasconi, R., Frouws, A., Werner, A., Vitelli, F., Puigcorbe Lacueva, V., D'cruz, A., McMahon, K., Robinson, J., Huggett, M., McNamara, S., Hyndes, G., Serrano Gras, O. (2023). Global dataset on seagrass meadow structure, biomass and production. Earth System Science Data, 15(1), 511-519. https://doi.org/10.5194/essd-15-511-2023.
  • Webster, C., Lavery, P., O'Dea, C., Sanchez Alarcon, M., Salgado Kent, C., McMahon, K. (2023). The Influence Of Abiotic And Biotic Conditions On Lifecycle Stages Is Critical For Estuarine Seagrass Resilience. Marine Biology: international journal on life in oceans and coastal waters, 170(4), article number 48. https://doi.org/10.1007/s00227-023-04192-6.

2022

Journal Articles

  • O'Dea, C., Lavery, P., Webster, C., McMahon, K. (2022). Increased extent of waterfowl grazing lengthens the recovery time of a colonizing seagrass (Halophila ovalis) with implications for seagrass resilience. Frontiers in Plant Science, 13(29 August 2022), Article number 947109. https://doi.org/10.3389/fpls.2022.947109.
  • Hatum, P., McMahon, K., Mengersen, K., Wu, P. (2022). Guidelines for model adaptation: A study of the transferability of a general seagrass ecosystem Dynamic Bayesian Networks model. Ecology and Evolution, 12(8), article number e9172. https://doi.org/10.1002/ece3.9172.
  • McMahon, K., Kilminster, K., Canto, R., Roelfsema, C., Lyons, M., Kendrick, G., Waycott, M., Udy, J. (2022). The Risk of Multiple Anthropogenic and Climate Change Threats Must Be Considered for Continental Scale Conservation and Management of Seagrass Habitat. Frontiers in Marine Science, 9(March 2022), Article number 837259. https://doi.org/10.3389/fmars.2022.837259.

2021

Journal Articles

  • Cvitanovic, C., Mackay, M., Kelly, R., Wilson, SK., Waples, K., Nash, KL., Van Putten, EI., Field, S., Botterill-James, T., Austin, BJ., Beckley, LE., Boschetti, F., Depczynski, M., Dobbs, RJ., Evans, RD., Feng, M., Goater, RK., Halford, AR., Kendrick, A., Kendrick, GA., Lincoln, GD., Ludgerus, LJ., Lowe, RJ., McMahon, K., Munro, JK., Newman, SJ., Nutt, C., Pearson, L., O'Leary, MJ., Richards, ZT., Robbins, WD., Rogers, DI., Salgado Kent, C., Schoepf, V., Travers, MJ., Thums, M., Tucker, AD., Underwood, JN., Whiting , S., Mathews, D. (2021). Thirty critical research needs for managing an ecologically and culturally unique remote marine environment: The Kimberley region of Western Australia. Ocean and Coastal Management, 212(15 October 2021), Article number 105771. https://doi.org/10.1016/j.ocecoaman.2021.105771.
  • Said, N., McMahon, K., Lavery, P. (2021). Accounting for the influence of temperature and location when predicting seagrass (Halophila ovalis) photosynthetic performance. Estuarine, Coastal and Shelf Science, 257(31 August 2021), Article number 107414. https://doi.org/10.1016/j.ecss.2021.107414.
  • Webster, C., Kilminster, K., Sanchez Alarcon, M., Bennett, K., Strydom, S., McNamara, S., Lavery, P., McMahon, K. (2021). Population-specific resilience of Halophila ovalis seagrass habitat to unseasonal rainfall, an extreme climate event in estuaries. Journal of Ecology, 109(9), 3260-3279. https://doi.org/10.1111/1365-2745.13648.
  • McCallum, R., Eyre, B., Hyndes, G., McMahon, K., Oakes, J., Wells, N. (2021). Importance of internal dissolved organic nitrogen loading and cycling in a small and heavily modified coastal lagoon. Biogeochemistry: an international journal, 155(2), 237-261. https://doi.org/10.1007/s10533-021-00824-5.
  • Phelps, C., McMahon, K., Bissett, A., Bernasconi, R., Steinberg, P., Thomas, T., Marzinelli, E., Huggett, M. (2021). The surface bacterial community of an Australian kelp shows cross-continental variation and relative stability within regions. FEMS Microbiology Ecology, 97(7), Article number fiab089. https://doi.org/10.1093/femsec/fiab089.
  • Hernawan, U., Lavery, P., Kendrick, G., Van Dijk, K., Ulumuddin, Y., Triandiza, T., McMahon, K. (2021). Predictors of marine genetic structure in the Indo-Australian Archipelago. Regional Studies in Marine Science, 47(September 2021), Article number 101919. https://doi.org/10.1016/j.rsma.2021.101919.
  • Collier, C., Langlois, L., McMahon, K., Udy, J., Rasheed, M., Lawrence, E., Carter, A., Fraser, M., McKenzie, L. (2021). What lies beneath: Predicting seagrass below-ground biomass from above-ground biomass, environmental conditions and seagrass community composition. Ecological Indicators, 121(February 2021), Article number 107156. https://doi.org/10.1016/j.ecolind.2020.107156.
  • Evans, R., McMahon, K., Van Dijk, K., Dawkins, K., Nilsson Jacobi, M., Vikrant, A. (2021). Identification of dispersal barriers for a colonising seagrass using seascape genetic analysis. Science of the Total Environment, 763(1 April 2021), Article number 143052. https://doi.org/10.1016/j.scitotenv.2020.143052.
  • Hernawan, U., Rahmawati, S., Rappe, A., Sjafrie, N., Hadiyanto, H., Yusup, D., Nugraha, A., La Nafie, Y., Adi, W., Prayudha, B., Irawan, A., Rahayu, Y., Ningsih, E., Riniatsih, I., Supriyadi, I., McMahon, K. (2021). The first nation-wide assessment identifies valuable blue-carbon seagrass habitat in Indonesia is in moderate condition. Science of the Total Environment, 782(15 August 2021), Article number 146818. https://doi.org/10.1016/j.scitotenv.2021.146818.

2020

Journal Articles

  • Abdolahpour, M., Ghisalberti, M., McMahon, K., Lavery, P. (2020). Material Residence Time in Marine Canopies Under Wave-Driven Flows. Frontiers in Marine Science, 7(14 August 2020), Article number 574. https://doi.org/10.3389/fmars.2020.00574.
  • Ontoria, Y., Webster, C., Said, N., Ruiz, J., Perez, M., Romero, J., McMahon, K. (2020). Positive effects of high salinity can buffer the negative effects of experimental warming on functional traits of the seagrass Halophila ovalis. Marine Pollution Bulletin, 158(September 2020), Article number 111404. https://doi.org/10.1016/j.marpolbul.2020.111404.

2019

Journal Articles

  • Pujol, D., Abdolahpour, M., Lavery, P., McMahon, K., Oldham, C. (2019). Flow velocity and nutrient uptake in marine canopies. Marine Ecology Progress Series, 622(18 July 2019), 17-30. https://doi.org/10.3354/meps12987.
  • Binks, RM., Byrne, M., McMahon, K., Pitt, G., Murray, K., Evans, RD. (2019). Habitat discontinuities form strong barriers to gene flow among mangrove populations, despite the capacity for long-distance dispersal. Diversity and Distributions, 25(2), 298-309. https://doi.org/10.1111/ddi.12851.
  • Kendrick, GA., Nowicki, RJ., Olsen, YS., Strydom, S., Fraser, MW., Sinclair, EA., Statton, J., Hovey, RK., Thomson, JA., Burkholder, DA., McMahon, K., Kilminster, K., Hetzel, Y., Fourqurean, JW., Heithaus, MR., Orth, RJ. (2019). A Systematic Review of How Multiple Stressors From an Extreme Event Drove Ecosystem-Wide Loss of Resilience in an Iconic Seagrass Community. Frontiers in Marine Science, 6(JUL, 2019), Article number 455. https://doi.org/10.3389/fmars.2019.00455.
  • Wu, PP., Mergersen, K., Caley, MJ., McMahon, K., Rasheed, MA., Kendrick, GA. (2019). Analysing the dynamics and relative influence of variables affecting ecosystem responses using functional PCA and boosted regression trees: A seagrass case study. Methods in Ecology and Evolution, 10(10), 1723-1733. https://doi.org/10.1111/2041-210X.13269.

2018

Book Chapters

  • Marsh, H., Creche, A., McMahon, K. (2018). Dugongs: Seagrass Community Specialists. Seagrasses of Australia: Structure, Ecology and Conversation (629-661). Springer. https://doi.org/10.1007/978-3-319-71354-0_19.
  • McMahon, K., Sinclair, EA., Sherman, CD., Van Dijk, K., Hernawan, UE., Verduin, J., Waycott, M. (2018). Genetic Connectivity in Tropical and Temperate Australian Seagrass Species. Seagrasses of Australia: Structure, Ecology and Conversation (155-195). Springer. https://doi.org/10.1007/978-3-319-71354-0_6.

Journal Articles

  • O'Brien, KR., Waycott, M., Maxwell, P., Kendrick, GA., Udy, JW., Ferguson, AJ., Kilminster, K., Scanes, P., McKenzie, LJ., McMahon, K., Adams, MP., Samper-Villarreal, J., Collier, C., Lyons, M., Mumby, PJ., Radke, L., Christianen, MJ., Dennison, WC. (2018). Seagrass ecosystem trajectory depends on the relative timescales of resistance, recovery and disturbance. Marine Pollution Bulletin, 134(2018), 166-176. https://doi.org/10.1016/j.marpolbul.2017.09.006.
  • Abdolahpour, M., Ghisalberti, M., McMahon, K., Lavery, P. (2018). The impact of flexibility on flow, turbulence, and vertical mixing in coastal canopies. Limnology and Oceanography, 63(6), 2777-2792. https://doi.org/10.1002/lno.11008.
  • Statton, J., McMahon, K., Lavery, P., Kendrick, GA. (2018). Determining light stress responses for a tropical multi-species seagrass assemblage. Marine Pollution Bulletin, 128(March 2018), 508-518. https://doi.org/10.1016/j.marpolbul.2018.01.060.
  • Huggett, M., McMahon, K., Bernasconi, R. (2018). Future warming and acidification result in multiple ecological impacts to a temperate coralline alga. Environmental Microbiology, 20(8), 2769-2782. https://doi.org/10.1111/1462-2920.14113.
  • Hallett, C., Hobday, A., Tweedley, J., Thompson, P., McMahon, K., Valesini, F. (2018). Observed and predicted impacts of climate change on the estuaries of south-western Australia, a Mediterranean climate region. Regional Environmental Change, 18(5), 1357–1373. https://doi.org/10.1007/s10113-017-1264-8.
  • Verges, A., Doropoulos, C., Czarnik, R., McMahon, K., Llonch, N., Poore, AG. (2018). Latitudinal variation in seagrass herbivory: Global patterns and explanatory mechanisms. Global Ecology and Biogeography, 27(9), 1068-1079. https://doi.org/10.1111/geb.12767.
  • Wu, PP., Caley, MJ., Kendrick, G., McMahon, K., Mergersen, K. (2018). Dynamic Bayesian network inferencing for non-homogeneous complex systems. Journal of the Royal Statistical Society Series C: Applied Statistics, 67(2), 417-434. https://doi.org/10.1111/rssc.12228.
  • Wu, PP., McMahon, K., Rasheed, MA., Kendrick, GA., York, PH., Chartrand, K., Caley, MJ., Mergersen, K. (2018). Managing seagrass resilience under cumulative dredging affecting light: Predicting risk using dynamic Bayesian networks. Journal of Applied Ecology, 55(3), 1339-1350. https://doi.org/10.1111/1365-2664.13037.
  • Strydom, S., McMahon, K., Kendrick, G., Statton, J., Lavery, P. (2018). Short-term Responses of Posidonia australis to Changes in Light Quality. Frontiers in Plant Science, 8(17 January 2018), article no.2224. https://doi.org/10.3389/fpls.2017.02224.

2017

Journal Articles

  • McMahon, K., Evans, R., Van Dijk, K., Hernawan, U., Kendrick, G., Lavery, P., Lowe, R., Puotinen, M., Waycott, M. (2017). Disturbance is an important driver of clonal richness in tropical seagrasses. Frontiers in Plant Science, 8(5 December), Article Number: 2026. https://doi.org/10.3389/fpls.2017.02026.
  • Strydom, S., McMahon, K., Kendrick, G., Statton, J., Lavery, P. (2017). Seagrass Halophila ovalis is affected by light quality across different life history stages. Marine Ecology Progress Series, 572(2017), 103-116. https://doi.org/10.3354/meps12105.
  • Strydom, S., McMahon, K., Lavery, P. (2017). Response of the seagrass Halophila ovalis to altered light quality in a simulated dredge plume. Marine Pollution Bulletin, 121(1-2), 323-330. https://doi.org/10.1016/j.marpolbul.2017.05.060.
  • Fraser, MW., Short, J., Kendrick, G., McLean, D., Keesing, J., Byrne, M., Caley, MJ., Clarke, D., Davis, AR., Erftemeijer, PL., Field, S., Gustin-Craig, S., Huisman, J., Keough, M., Lavery, P., Masini, R., McMahon, K., Mengersen, K., Rasheed, M., Statton, J., Stoddart, J., Wu, P. (2017). Effects of dredging on critical ecological processes for marine invertebrates, seagrasses and macroalgae, and the potential for management with environmental windows using Western Australia as a case study. Ecological Indicators, 78(2017), 229-242. https://doi.org/10.1016/j.ecolind.2017.03.026.
  • Abdolahpour, M., Ghisaberti, M., Lavery, P., McMahon, K. (2017). Vertical mixing in coastal canopies. Limnology and Oceanography, 62(1), 26-42. https://doi.org/10.1002/lno.10368.
  • Hernawan, U., Van Dijk, K., Kendrick, G., Feng, M., Biffin, E., Lavery, P., McMahon, K. (2017). Historical processes and contemporary ocean currents drive genetic structure in the seagrass Thalassia hemprichii in the Indo-Australian Archipelago. Molecular Ecology, 26(4), 1008-1021. https://doi.org/10.1111/mec.13966.
  • York, PH., Smith, TM., Coles, RG., McKenna, SA., Connolly, RM., Irving, AD., Jackson, EL., McMahon, K., Runcie, JW., Sherman, CD., Sullivan, BK., Trevathan-Tackett, SM., Brodersen, KE., Carter, AB., Ewers, CJ., Lavery, P., Roelfsema, CM., Sinclair, EA., Strydom, S., Tanner, JE., Van Dijk, K., Warry, FY., Waycott, M., Whitehead, S. (2017). Identifying knowledge gaps in seagrass research and management: An Australian perspective. Marine Environmental Research, 127(June 2017), 163-172. https://doi.org/10.1016/j.marenvres.2016.06.006.
  • Wu, PP., Mengersen, K., McMahon, K., Kendrick, GA., Chartrand, K., York, PH., Rasheed, MA., Caley, MJ. (2017). Timing anthropogenic stressors to mitigate their impact on marine ecosystem resilience. Nature Communications, 8(November), Article number 1263. https://doi.org/10.1038/s41467-017-01306-9.

2016

Journal Articles

  • Hyndes, G., Heck, KL., Verges, A., Harvey, ES., Kendrick, GA., Lavery, P., McMahon, K., Orth, RJ., Pearce, A., Vanderklift, M., Wernberg, T., Whiting, S., Wilson, S. (2016). Accelerating Tropicalization and the Transformation of Temperate Seagrass Meadows. Bioscience, 66(11), 938-948. https://doi.org/10.1093/biosci/biw111.

Conference Publications

  • Abdolahpour, M., Ghisalberti, M., Lavery, P., McMahon, K., Hambleton, M. (2016). Residence time in aquatic canopies in wave-dominated flows. The Proceedings of the 20th Australasian Fluid Mechanics Conference (p.1-4). Australasian Fluid Mechanics Society.
  • Abdolahpour, M., Ghisalberti, M., Lavery, P., McMahon, K. (2016). The importance of creating dynamically-scaled models of aquatic vegetation in the laboratory. Proceedings of the 11th International Symposium on Ecohydraulics (Paper 25992). University of Melbourne.

2015

Journal Articles

  • Jahnke, M., Pagés, J., Alcoverro, T., Lavery, P., McMahon, K., Procaccini, G. (2015). Should we sync? Seascape-level genetic and ecological factors determine seagrass flowering patterns. Journal of Ecology, 103(6), 1464-1474. https://doi.org/10.1111/1365-2745.12470.
  • Lynch, AJ., Thackway, R., Specht, A., Beggs, PJ., Brisbane, S., Burns, EL., Byrne, M., Capon, SJ., Casanova, MT., Clarke, PA., Davies, JM., Dovers, S., Dwyer, RG., Ens, E., Fisher, DO., Flanigan, M., Garnier, E., Guru, SM., Kilminster, K., Locke, J., Mac Nally, R., McMahon, K., Mitchell, PJ., Pierson, JC., Rodgers, EM., Russell-Smith, J., Udy, J., Waycott, M. (2015). Transdisciplinary synthesis for ecosystem science, policy and management: The Australian experience. Science of the Total Environment, 534(2015), 173-184. https://doi.org/10.1016/j.scitotenv.2015.04.100.
  • Kilminster, K., McMahon, K., Waycott, M., Kendrick, GA., Scanes, P., McKenzie, L., O'Brien, KR., Lyons, M., Ferguson, A., Maxwell, P., Glasby, T., Udy, J. (2015). Unravelling complexity in seagrass systems for management: Australia as a microcosm. Science of the Total Environment, 534(2015), 97-109. https://doi.org/10.1016/j.scitotenv.2015.04.061.

Conference Publications

  • Wu, P., Mengersen, K., McMahon, K., Kendrick, G., Caley, J. (2015). Predicting the temporal response of seagrass meadows to dredging using Dynamic Bayesian Networks. MODSIM2015, 21st International Congress on Modelling and Simulation. (1282-1288). The Modelling and Simulation Society of Australia and New Zealand Inc..

2014

Books

  • Waycott, M., McMahon, K., Lavery, P. (2014). A Guide to Southern Temperate Seagrasses. CSIRO Publishing.

Journal Articles

  • Choney, G., McMahon, K., Lavery, P., Collier, N. (2014). Swan grazing on seagrass: abundance but not grazing pressure varies over an annual cycle in a temperate estuary. Marine and Freshwater Research, 65(8), 738–749. https://doi.org/10.1071/MF13126.
  • McMahon, K., Van Dijk, KJ., Ruiz-Montoya, L., Kendrick, G., Krauss, S., Waycott, M., Verduin, J., Lowe, R., Statton, J., Brown, E., Duarte, C. (2014). The movement ecology of seagrasses. Proceedings of the Royal Society B: Biological Sciences, 281(1795), Article number 20140878, 9p. https://doi.org/10.1098/rspb.2014.0878.
  • Hedley, J., McMahon, K., Fearns, P. (2014). Seagrass Canopy Photosynthetic Response Is a Function of Canopy Density and Light Environment: A Model for Amphibolis griffithii. PLoS ONE, 9(10), Article no. e111454. https://doi.org/10.1371/journal.pone.0111454.
  • McMahon, K., Lavery, P. (2014). Canopy-scale modifications of the seagrass Amphibolis griffithii in response to and recovery from light reduction. Journal of Experimental Marine Biology and Ecology, 455(June), 38-44. https://doi.org/10.1016/j.jembe.2014.02.015.
  • Oldham, CE., McMahon, K., Brown, E., Bosserelle, C., Lavery, P. (2014). A preliminary exploration of the physical properties of seagrass wrack that affect its offshore transport, deposition and retention on a beach. Limnology and Oceanography: Fluids and Environment, 4(1), 120-135. https://doi.org/10.1215/21573689-2844703.

2013

Journal Articles

  • McMahon, K., Collier, C., Lavery, P. (2013). Identifying robust bioindicators of light stress in seagrasses: A meta-analysis. Ecological Indicators, 30(1), 7-15. https://doi.org/10.1016/j.ecolind.2013.01.030.
  • Lavery, P., McMahon, K., Weyers, J., Boyce, M., Oldham, CE. (2013). Release of dissolved organic carbon from seagrass wrack and its implications for trophic connectivity. Marine Ecology Progress Series, 494(2013), 121-133. https://doi.org/10.3354/meps10554.
  • Gartner, A., Tuya, F., Lavery, P., McMahon, K. (2013). Habitat preferences of macroinvertebrate fauna among seagrasses with varying structural forms. Journal of Experimental Marine Biology and Ecology, 439(January 2013), 143-151. https://doi.org/10.1016/j.jembe.2012.11.009.

2011

Journal Articles

  • McMahon, K., Lavery, P., Mulligan, M. (2011). Recovery from the impact of light reduction on the seagrass Amphibolis griffithii, insights for dredging management. Marine Pollution Bulletin, 62(2), 270-283. https://doi.org/10.1016/j.marpolbul.2010.11.001.

2010

Journal Articles

  • Gartner, A., Lavery, P., McMahon, K., Brearley, A., Barwick, H. (2010). Light reductions drive macroinvertebrate changes in Amphibolis griffithii seagrass habitat.. Marine Ecology Progress Series, 401(1), 87-100. https://doi.org/10.3354/meps08367.

2009

Journal Articles

  • Arthur, K., McMahon, K., Limpus, C., Dennison, W. (2009). Feeding ecology of green turtles (Chelonia mydas) from Shoalwater Bay, Australia. Marine Turtle Newsletter, 2009(123), 6-12.
  • Eklöf, JS., McMahon, K., Lavery, P. (2009). Effects of Multiple Disturbances in Seagrass Meadows: Shading Decreases Resilience to Grazing. Marine and Freshwater Research, 60(12), 1317-1327.
  • Lavery, P., McMahon, K., Mulligan, M., Tennyson, A. (2009). Interactive effects of timing, intensity and duration of experimental shading on Amphibolis griffithii. Marine Ecology Progress Series, 394(2009), 21-33.
  • McMahon, K., Waycott, M. (2009). New record for Halophila decipiens Ostenfeld in Kenya based on morphological and molecular evidence. Aquatic Botany, 91(4), 318-320.

2008

Reports

  • Gartner, A., Lavery, P., McMahon, K., Brearley, A. (2008). Consequences of reduced light availability in seagrass meadows for fauna and fisheries. Joondalup. ECU.

2005

Journal Articles

  • Bengston-Nash, S., McMahon, K., Eaglesham, G., Müller, J. (2005). Application of a novel phytotoxicity assay for the detection of herbicides in Hervey Bay and the Great Sandy Straits. Marine Pollution Bulletin, 51(1-4), 351-360.
  • McMahon, K., Bengston-Nash, S., Eaglesham, G., Müller, J., Duke, N. (2005). Herbicide contamination and the potential impact to seagrass meadows in Hervey Bay, Queensland, Australia. Marine Pollution Bulletin, 51(1-4), 325-334.

2004

Books

  • Waycott, M., McMahon, K., Mellors, J., Calladine, A., Kleine, D. (2004). A guide to tropical seagrasses of the Indo-West Pacific. James Cook University.

2003

Journal Articles

  • Thompson, P., Waite, A., McMahon, K. (2003). Dynamics of a cyanobacterial bloom in a hypereutrophic, stratified weir pool. Marine and Freshwater Research, 54(1), 27-37.

Research Projects

  • Supporting regional planning in northern Australia: Building knowledge, skills and partnerships for understanding seagrass distribution, Department of Climate Change, Energy, the Environment and Water, National Environmental Science Program, 2023 ‑ 2027, $73,605.
  • Sponsorship Agreement for Research Fellow in Analytical Chemistry/Proteomics, Chemistry Centre WA T/A ChemCentre, Research Fellowship Grant, 2023 ‑ 2026, $473,619.
  • Keep Watch' Geograph Bay Seagrass Monitoring Program - 2022 - 2026 , Geographe Catchment Council Inc, Grant - Geocatch, 2021 ‑ 2026, $82,094.
  • Advancing predictions of WA marine heatwaves and impacts on marine ecosystems, Department of Jobs, Tourism, Science and Innovation, WA Marine Science Project, 2022 ‑ 2026, $272,249.
  • 4.1 Coastal Seagrass of the Gulf of Carpentaria: Building Knowledge & Capacity as a Foundation for Long-Term Monitoring, Department of Climate Change, Energy, the Environment and Water, National Environmental Science Program, 2024 ‑ 2026, $115,500.
  • Identifying the ecological roles, values and functions of intertidal benthic communities and habitat, Western Australian Marine Science Institution, Grant, 2023 ‑ 2025, $1,046,000.
  • Predicting climate resilience of seagrasses through estimating optimum and maximum temperature ranges , Minderoo Foundation, Flourishing Oceans - Exmouth Research Laboratory, 2023 ‑ 2024.
  • Project 2.2. Pressure-response relationships, building resilience and future proofing seagrass meadows , Western Australian Marine Science Institution, Westport Project, 2021 ‑ 2024, $1,254,000.
  • Project 2.4 Benthic communities in soft-sediment and hard substrates: baseline data, pressure-response relationships of key biota for EIA, and mitigation strategies for artificial reefs, Western Australian Marine Science Institution, Westport Project, 2021 ‑ 2024, $301,714.
  • Plant-herbivore interactions in a changing climate and implications for seagrass recovery, Ecological Society of Australia, Holsworth Wildlife Research Endowment, 2019 ‑ 2023, $6,300.
  • Conserving Critical Seagrass Habitat for Iconic Wildlife: An Integrated Assessment across the Pilbara, Department of Biodiversity, Conservation and Attractions WA, Scholarships to Support Industry Engagement PhD Projects, 2016 ‑ 2023, $10,500.
  • RESEARCH TOPIC: Resilience of tropical seagrasses, University of Western Australia, McNamara World Heritage PhD Top-Up Scholarship, 2018 ‑ 2023, $87,500.
  • Genetic diversity and resilience of estuarine seagrasses, Department of Water and Environmental Regulation (WA), Scholarships to Support Industry Engagement PhD Projects, 2018 ‑ 2021, $10,500.
  • Keep Watch – Seagrass Health Monitoring 2017-2021, Geographe Catchment Council Inc, Grant - Geocatch, 2017 ‑ 2021, $75,000.
  • Determining the cumulative effect of putative pathogenic microbes, high temperatures and herbivory on the kelp, Ecklonia radiata, Ecological Society of Australia, Holsworth Wildlife Research Endowment, 2019 ‑ 2020, $3,400.
  • Conserving critical seagrass habitat for dugong: an integrated assessment across the Pilbara, Department of Biodiversity, Conservation and Attractions WA, Botanic Parks and Gardens - Grant, 2017 ‑ 2020, $487,330.
  • Nitrogen Isotope Study - Wastewater Treatment Plant Plume Mapping, Water Corporation, Grant, 2019, $23,013.
  • Impact of nutrients and stormwater on periphyton in a shallow embayment, Department of Water and Environmental Regulation (WA), Sponsorship, 2017 ‑ 2019, $2,000.
  • Visiting Fellow A/Professor Kate O'Brien, Edith Cowan University, Edith Cowan University, School of Science Visiting Fellow Grant Scheme, 2018, $1,500.
  • Determining the cumulative effect of putative pathogenic microbes, high temperatures and herbivory on the ecologically important kelp, Ecklonia radiata, Ecological Society of Australia, Holsworth Wildlife Research Endowment, 2017 ‑ 2018, $6,000.
  • Nutrient sources for primary producers in Roebuck Bay, Water Corporation, Grant, 2016 ‑ 2018, $27,960.
  • Resilience of seagrasses in tropical systems exposed to human impacts, Edith Cowan University, ECU Industry Collaboration Grant - 2016 (Round 1), 2015 ‑ 2018, $52,000.
  • Vasse Wonnerup Wetlands Investigation, South West Catchment Council, Grant, 2014 ‑ 2018, $48,000.
  • Defining thresholds and indicators of Primary Producer response to dredging related pressures, Western Australian Marine Science Institution, Grant, 2013 ‑ 2017, $802,028.
  • Provision of Preliminary Investigation into Macroalgae and Seagrass Wrack at Jurien Bay Boat Harbour - DOT306815, Department of Transport (WA), DoT WA - Grant, 2016 ‑ 2017, $89,399.
  • Australian-wide risk assessment of carbon dioxide emissions from seagrass habitat under current and future global change threats , Edith Cowan University, ECU Collaboration Enhancement Scheme - 2016 Round 1, 2016 ‑ 2017, $6,000.
  • ‘Keep Watch’ Geographe Bay Seagrass Health Monitoring Program 2015/16, Geographe Catchment Council Inc, Grant - Geocatch, 2015 ‑ 2016, $15,000.
  • The effects of light quality caused by dredging on seagrass habitats, Ecological Society of Australia, Holsworth Wildlife Research Endowment, 2015 ‑ 2016, $4,000.
  • Ecological connectivity of Kimberley marine communities - WAMSI Kimberley Research Program, The Australian Institute of Marine Science, Western Australian Marine Science Institution Grant, 2014 ‑ 2016, $97,137.
  • Quantification of the Biodiversity of the Lake MacLeod Northern Ponds, Dampier Salt Limited Perth Division, Grant-Dampsalt, 2010 ‑ 2016, $433,711.
  • Protection of coastal ecosystems and marine resource management, The Department of Industry, Innovation, Climate Change, Science, Research and Tertiary Education , CRN - Grant, 2011 ‑ 2016, $890,684.
  • Undertaking Geographe Bay Keep Watch seagrass monitoring program, Geographe Catchment Council Inc, Grant - Geocatch, 2015, $14,393.
  • Undertaking Geographe Bay Keep Watch seagrass monitoring program, Geographe Catchment Council Inc, Grant - Geocatch, 2014, $15,851.
  • Seagrass Monitoring Program for Geographe Bay 2012 and 2013, Geographe Catchment Council Inc, Grant - Geocatch, 2012 ‑ 2013, $33,700.
  • Improving capacity to predict impacts of dredging - modelling light and the response of seagrasses, Edith Cowan University, ECU Industry Collaboration - Grant, 2011 ‑ 2013, $25,000.
  • Seagrass Monitoring Program for Geographe Bay 2011, Department of Water and Environmental Regulation (WA), Grant, 2011 ‑ 2012, $3,121.
  • Developing indicators of nutrient-enrichment impacts on nearshore coastal reefs, Edith Cowan University, ECU Industry Collaboration - Grant, 2011 ‑ 2012, $58,937.
  • Predicting climate change impacts on seagrasses - the effect of temperature and ocean acidification, Edith Cowan University, ECU Early Career Researcher - Grant, 2010 ‑ 2011, $24,995.
  • Research Study into Seagrass Wrack Movement at Geographe Bay , University of Western Australia, Grant, 2008 ‑ 2010, $415,000.
  • Latitudinal Gradients in Tolerance to Multiple Stressors of a Temperate Seagrass, Edith Cowan University, ECU Early Career Researcher - Grant, 2008 ‑ 2010, $24,966.
  • Impact of Dredging on Coral Communities, Woodside Energy Ltd, Grant, 2008 ‑ 2009, $118,220.
  • Attributes of a Sustainable Reef: Seagrass and Associated Megafauna, Great Barrier Reef Foundation, Grant, 2009, $3,000.
  • Determining Seagrass Distribution in the Swan-Canning River - Testing Methods, Department of Water and Environmental Regulation (WA), Grant, 2008, $10,194.
  • Recovery of Amphibolis seagrass following periods of light reduction, Department of Environment and Conservation WA, Grant, 2007 ‑ 2008, $16,000.
  • Species diversity and distribution in the seagrass genus, Posidonia using morphological and molecular characters, Edith Cowan University, ECU Early Career Researcher - Grant, 2007 ‑ 2008, $14,625.
  • Habitat Use by Black Swans in the Swan River Estuary, Ernest Hodgkin Trust, Scholarship, 2006 ‑ 2007, $2,182.

Research Student Supervision

Current Supervisions

Principal Supervisor

  • Doctor of Philosophy, Spatial and temporal patterns in genetic diversity in seagrass meadows and the implications of these patterns for resilience.
  • Doctor of Philosophy, Predicting seagrass tolerance to marine heatwaves & ocean warming

Co-principal Supervisor

  • Doctor of Philosophy, Overcoming barriers to seagrass restoration

Completed Supervisions

Principal Supervisor

  • Master of Science by Research, Seagrass resilience: Exploring recovery trajectories, succession and facilitation
  • Master of Science (Environmental Management), Assessing biofilm and epiphytes on seagress leaves as bioindicators of environmental change
  • Doctor of Philosophy, Microbial diversity and function, and an exploration of bleaching in the Australian kelp Ecklonia radiata
  • Doctor of Philosophy, Environmental variability generates sources of resilience in seagrasses
  • Master of Science (Environmental Management), The impact of black Swan (cygnus ataratus) grazing on the seagrass halophila ovalis in the lower Swan river estuary
  • Doctor of Philosophy, Gene flow and genetic structure of the seagrass thalassia hemprichii in the indo-Australian archipelago.
  • Doctor of Philosophy, Investigating the effects of changes in light quality on different life history stages of seagrasses
  • Master of Science (Environmental Management), Plant-herbivore interactions in a changing climate and implications for seagrass resilience

Co-principal Supervisor

  • Doctor of Philosophy, Organic Matter and Nitrogen Cycling in a Heavily Modified Coastal Lagoon

Associate Supervisor

  • Master of Science (Environmental Management), Influence of hydrological and environmental conditions on mangrove vegetation at coastal and inland semi-arid areas of the Gascoyne region
  • Doctor of Philosophy, Trophic implications of light reductions for Amphibolis griffithi seagrass communities
  • Doctor of Philosophy, Residence time in coastal canopies
  • Master of Science (Biological Sciences), Effects of temperature and location on the photosynthesis-irradiance relationship of the seagrass halophila ovalis
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