Dr James Tweedley
BSc Hons(Portsmouth), MRes (Plymouth), PhD (Murdoch)

Post Doctoral Research Fellow

About me

I am originally from the UK and completed a BSc in Marine Biology from the University of Portsmouth in 2005. During this time I conducted fieldwork in Indonesia for my honours project which involved accessing the influence of mariculture on fish populations in seagrass beds. Having graduated, I was selected to join a multinational survey of the Mediterranean Sea before enrolling in a Masters of Research program in Marine Biology at the University of Plymouth. The focus of my research project was assessing the effect of an invasive alga on seagrass, fish and benthic macroinvertebrate populations in a local estuary.

I came to Murdoch in 2007 to start my PhD, which was funded by the Fisheries Research and Development Corporation and the Department of Environment and Conservation. This project aimed to classify habitat types in the nearshore and offshore waters of Broke Inlet and develop a tool to quantitatively assign any new location within the estuary to a habitat type and predict the fish and benthic macroinvertebrate species likely to inhabit that site.

My primary research interest is the ecology of aquatic environments, particularly (1) understanding linkages between faunal community structure (fish and benthic macroinvertebrates) and complex suites of environmental drivers and (2) developing biotic indices for assessing ecosystem health. This area of research has led me to gain extensive knowledge of contemporary multivariate statistical techniques. I have employed these interests and skills to develop a quantitative habitat classification and faunal prediction scheme, explore inter-decadal changes in faunal communities, assess levels of environmental degradation using faunal community composition and investigate how changes in abiotic variables influence ecosystem health and functioning. My current projects involve determining the biology and ecology of the recreationally important Western School Prawn (Metapenaeus dalli) through a series of laboratory and field studies and cost/benefits of aquaculture-based enhancement and artificial reefs in Western Australia.

Teaching area

My current role at Murdoch predominantly focuses on research. However, I currently lecture and/or demonstrate in the following units:

First year: BIO180: Introduction to Marine Biology

Second year: BIO244: Animal Speciation, Radiation, Evolution; BIO257: Australian Biodiversity; ENV241: Ecology

Third year: BIO377: Marine Ecology; BIO393: Tropical Marine Biology

Postgraduate: VLS683: Advanced Research Methods for Scientists; Quantitative Resource Ecology (BIO418) and Multivariate Techniques and Community Ecology (NBIO528).

Research areas

My field of research is the biology and ecology of nearshore marine, estuarine and wetland environments and their faunas. Specifically I have undertaken research in:

  • Community ecology of fish and benthic macroinvertebrates
  • Associations between faunas and habitat types
  • Relationship between faunas and environmental variables
  • Assessing the health of estuaries using benthic macroinvertebrates
  • Fish dietary studies
  • Biogeography of fish faunas
  • Impact of invasive species

Current projects

See ‘Awards and grants’ section below for a list of project that I am currently involved with.

Awards and grants

2017-2018 $18,627 Coastwest. Science on the Inlet: Determining the fauna composition of Toby Inlet. Principal investigator from Murdoch University, lead applicant City of Busselton.

2017-2018 $70,329 Department of Water and Environmental Regulation. Integrated ecological monitoring in the Vasse-Wonnerup Wetlands. Principal investigator.

2017-2017 $21,919 Department of Water. Benthic macroinvertebrate monitoring in the Vasse-Wonnerup Wetlands. Principal investigator.

2017-2017 $5,500 School of Veterinary and Life Sciences, Murdoch University. Identification of benthic macroinvertebrates from the Peel-Harvey Estuary. Co-investigator.

2017-2017 $3,750 RPS Group Plc. Identification of benthic macroinvertebrates from the Peel-Harvey Estuary. Principal investigator.

2016-2018 $61,326 Department of Water. Monitoring fish passage through the Vasse Surge Gates using Passive Integrated Transponders. Co-investigator.

2016-2017 $7,500 Department of Water. Monitoring the recovery of the Black Bream population in the Vasse-Wonnerup. Principal investigator.

2016-2018 $200,000 State Government of Western Australia. Pink Snapper (Chrysophrys auratus) Stock Enhancement Trial. Principal investigator from Murdoch University, lead applicant Australian Centre for Applied Aquaculture Research.

2016-2017 $80,000 Recreational Fishing Initiatives Fund. Blue Swimmer Crab (Portunus armatus) stocking trial: reducing costs and increasing survival. Principal investigator from Murdoch University, lead applicant Australian Centre for Applied Aquaculture Research.

2016-2019 $398,994 Fisheries Research and Development Cooperation. Golden Fish: evaluating and optimising the biological, social and economic returns of small-scale fisheries. Principal investigator.

2016-2017 $31,000 Department of Parks and Wildlife. Monitoring of the Western School Prawns in the Swan-Canning Estuary following a restocking program. Principal investigator.

2015-2017 $292,488 Recreational Fishing Initiatives Fund. Targeted restocking of Mulloway on the West Australian Coast. Co-investigator.

2015-2017 $96,153 Swan River Trust. Investigating fish community assemblages as an index of estuarine condition in 2016 and 2017. Co-investigator.

2016-2016 $11,784 Milford Haven Waterway Environmental Monitoring Steering Group (UK). Milford Haven Waterway macrobenthos data analysis and review 2008-2015. Co-investigator.

2015-2016 $7,502 Geographe Bay Catchment Council. Monitoring the reproductive success of Black Bream following a large fish kill. Principal investigator.

2015-2016 $52,635 Recreational Fishing Initiatives Fund. Identifying future restocking options for Blue Swimmer Crabs. Principal investigator from Murdoch University, lead applicant Western Australian Fish Foundation.

2015-2016 $152,272 Recreational Fishing Initiatives Fund. Re-establishing recreational prawning in the Swan-Canning Estuary. Principal investigator from Murdoch University, lead applicant Western Australian Fish Foundation.

2015-2015 $2,854 Department of Parks and Wildlife. Are Black Bream from the Swan-Canning Estuary immunocompromised? Principal investigator.

2015-2015 $1,055 Department of Parks and Wildlife. Collection of Black Bream from the Swan-Canning Estuary to investigate whether fish an immunocompromised. Principal investigator.

2014-2017 $330,000 Fisheries Research and Development Corporation. The application, needs, costs and benefits of Habitat Enhancement Structures in Western Australia. Principal investigator from Murdoch University, lead applicant Recfishwest.

2014-2015 $57,200 Recreational Fishing Initiatives Fund. Can recreational fishers provide a cost effective means for monitoring artificial reefs? Principal investigator.

2014-2015 $26,500 Geographe Bay Catchment Council. Snapshot survey of the distribution and abundance of the macrophytes, macroalgae, phytoplankton and macroinvertebrates of the Vasse-Wonnerup Lagoons. Co-investigator.

2014-2015 $14,345  Geographe Bay Catchment Council. Calculation of key biological information for the management of Black Bream in the Vasse-Wonnerup. Principal investigator.

2014-2017 $136,000 South West Catchments Council. Vasse Wonnerup Wetlands Investigation Node: Stage 1. Co-investigator.

2014-2015 $50,000 State NRM Program Community Grants. Movement and abundance of key fishes in the Vasse-Wonnerup Estuary following a substantial fish kill. Co-investigator.

2013-2013 $15,000 Geographe Bay Catchment Council. Monitoring the fish fauna of the Vasse-Wonnerup wetland system following a substantial fish kill event. Principal investigator.

2013-2015 $200,000 Fisheries Research and Development Cooperation ($100k) and Swan River Trust ($100k). Stock enhancement of the Western School Prawn (Metapenaeus dalli) in the Swan-Canning Estuary; evaluating recruitment limitation, environment and release strategies. Co-investigator.

2013-2015 $19,380 Challenger Institute of Technology. Algal nutrition for larval Western School Prawns, Metapenaeus dalli. Co-investigator.

2013-2015 $22,950 Challenger Institute of Technology. Genetic implications of stock enhancement of the Western School Prawn, Metapenaeus dalli, in the Swan River Estuary. Co-investigator.

2013-2015 $121,655 Swan River Trust. Monitoring the ecological condition of the Swan-Canning Estuary using fish community indices. Co-investigator.

2012-2013  $8,007 Coastwest. Increasing community awareness of feral fish in the Vasse-Wonnerup Wetland. Principal investigator.

2012-2013 $14,976 South West Catchments Council: Sediment accumulation and resuspension in the Vasse-Wonnerup Wetlands and its impact on nutrient status and ecological health. Principal investigator.

2011-2013 $215,006 Caring for our Country: Control of introduced fish and crayfish in the Vasse-Wonnerup Ramsar wetland. Co-investigator.

2010-2012 $73,000 Swan River Trust: Monitoring the effects of artificial oxygenation on biota. Co-investigator.

2011-2011 $14,450 South West Catchments Council: Snapshot survey of the benthic macroinvertebrate fauna of the Vasse-Wonnerup RAMSAR wetlands. Principal investigator.

2007-2008 $2,500 Ernest Hodgkin Trust for Estuary Education and Research: Benthic macroinvertebrate survey of Broke Inlet. Principal investigator.

2007-2010 $70,000 Murdoch University: International PhD scholarship Principal investigator.

Events and speaking engagements

Oral presentations

  1. Florisson, J., Rowland, A., Campbell, L. & Tweedley, J.R. (2017). Reef Vision: successfully using recreational fishers to monitor artificial reefs using baited remote underwater video systems. 11th International Conference on Artificial Reef and Related Aquatic Habitats. Terengganu, Malaysia.
  2. Loneragan, N.R., Taylor, M.D. & Tweedley, J.R. (2017). Aquaculture-based enhancement and habitat enhancement structures: interventions for increasing fisheries production. International Symposium on Modern Marine (Freshwater) Ranching. Chifeng, China. * This presentation was an invited keynote talk.
  3. Beatty, S.J., Tweedley, J.R., Williams, J., Keleher, J., Whitty, J., Morgan, D. & Allen, M. (2017). One-way traffic: Black Bream passage through a storm surge barrier. Australian Society for Fish Biology Conference 2017. Albany, Australia.
  4. Florisson, J., Rowland, A., Campbell, L. & Tweedley, J.R. (2017). Development of habitat enhancement structures in WA – outcomes for the world. 8th World Recreational Fishing Conference. Victoria, Canada.
  5. Florisson, J., Rowland, A., Campbell, L. & Tweedley, J.R. (2017). Reef Vision: successfully using recreational fishers to monitor artificial reefs using baited remote underwater video systems. 8th World Recreational Fishing Conference. Victoria, Canada.
  6. Glazier, S., Valesini, F.J., Tweedley, J.R., Beatty, S.J. & Hydnes, G.A. (2017). Constructing a food web for key species in a Ramsar-listed estuarine environment. Australian Marine Science Association Conference 2017. Darwin, Australia. 
  7. Poh, B., Tweedley, J.R., Trayler, K.M. & Loneragan, N.R. (2017). Calculation of predation rates of restocked individuals: the influence of timing-of-release on survival. 15th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2017. Rottnest Island, Australia.
  8. Daviot, J. Fairclough, D.V., Crisafulli, B.M., Tweedley, J.R. & Loneragan, N.R. (2017). Do the abundances of key fish species change in response to natural and human-induced events in Cockburn Sound? 15th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2017. Rottnest Island, Australia.
  9. Campbell, T.I., Tweedley, J.R., Johnston, D. & Loneragan, N.R. (2017). Dietary composition of the crab Portunus armatus in two estuaries and a marine embayment in south-west Australia. 15th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2017. Rottnest Island, Australia.
  10. Crisp, J.A., D’Souza, F.M. L., Partridge, G.J., Tweedley, J.R. & Moheimani, N.R. (2017). Developing larval aquaculture practices for restocking the Western School Prawn Metapenaeus dalli. 15th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2017. Rottnest Island, Australia.
  11. Poulton, S., Hughes, M. & Tweedley, J.R. (2017). Beyond biology: determining the social dimensions of crabbing and support for different management options to sustain crab stocks. 15th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2017. Rottnest Island, Australia.
  12. Greenwell, C.N., Coulson, P.G., Tweedley, J.R. & Loneragan, N.R. (2017). Location and ontogentic differences affect the diet of the ambush predator Neosebastes pandus in southern Australia. 15th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2017. Rottnest Island, Australia.
  13. 13.Glazier, S., Valesini, F.J., Tweedley, J.R., Beatty, S.J. & Hydnes, G.A. (2017). Constructing a food web for key species in a Ramsar-listed estuarine environment. 15th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2017. Rottnest Island, Australia.
  14. Tweedley, J.R. & Calver, M.C. (2016). A technique for expediting comprehensive written feedback on assignments. The Conversation 2016: Learning and Teaching Showcase. Perth, Australia. * This presentation won best rapid fire presentation at the conference.
  15. Poh, B., Tweedley, J.R., Loneragan, N.R. (2016). Maximising restocking success by reducing predation. Australian Marine Science Association (AMSA) Marine Snapchat. Perth, Australia.
  16. Crisp, J.A., Tweedley, J.R., D’Souza, F.M.L., Partridge, G.J. & Moheimani, N.R. (2016). Reproductive factors affecting the aquaculture of the Western School Prawn. 14th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2016. Rottnest Island, Australia.
  17. Glazier, S., Valesini, F.J., Tweedley, J.R., Beatty, S., Hyndes, G. (2016). Constructing a quantitative and predictive food web for the Vasse-Wonnerup Wetland System. 14th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2016. Rottnest Island, Australia.
  18. Crisp, J.A., Tweedley, J.R., D’Souza, F.M.L., Partridge, G.J. & Moheimani, N.R. (2016). Reproductive factors influencing the aquaculture of the Western School Prawn Metapenaeus dalli. Asian-Pacific Aquaculture 2016. Surabaya, Indonesia.
  19. Beatty. S.J., Allen, M.G., Whitty, J.M., Lymbery, A.J., Keleher, J.J., Tweedley, J.R., Ebner, B.C. & Morgan, D.L. (2015). Movement of introduced goldfish Carassius auratus and the implications for control of a widespread invasive species. Australian Society for Fish Biology Conference 2015. Sydney, Australia.
  20. Hallett, C.S. & Tweedley, J.R. (2015). Effects of climate change on estuarine fish communities of south-western Australia. Australian Society for Fish Biology Conference 2015. Sydney, Australia.
  21. Tweedley, J.R., Keleher, J.J., Beatty, S.J. & Lymbery, A.J. (2015). The fish faunas of an intermittently-open, seasonally inverse estuary. Australian Society for Fish Biology Conference 2015. Sydney, Australia.
  22. Tweedley, J.R., Poh, B., Broadley, A.D., Crisp, J.A. & Loneragan, N.R. (2015). Understanding the ecology of the Western School Prawn to maximize restocking success. 5th International Symposium on Stock Enhancement and Sea Ranching. Sydney, Australia. Cited 2 times.
  23. Broadley, A., Tweedley, J.R. & Loneragan, N.R. (2015). Bioeconomic evaluation of restocking the Western School Prawn (Metapenaeus dalli) in an Australian estuary. 5th International Symposium on Stock Enhancement and Sea Ranching. Sydney, Australia.
  24. Trayler, K.M., Tweedley, J.R. & Jenkins, G.I. (2015). Prawn   Watch:   Engaging   fishers   in   science,   restocking   and   sustainable management of an iconic species that has declined in abundance. 2015 Australian Citizen Science Conference. Canberra, Australia.
  25. Valesini, F.J., Tweedley, J.R., Beatty,S.J. & Hyndes, G.A. (2015). Who eats what in the Vasse-Wonnerup? Developing a quantitative food web for understanding system function and energy sources. National Estuaries Network (NEN) science symposium. Busselton, Australia.
  26. Hugues dit Ciles, E. Chambers, J., Valesini, F., Rodger, K., Moore, S., Tweedley, J., Beatty, S., Ryan, M., Hyndes, G., McMahon, K., Purushothaman, S. & Holgate, K. (2015). Vasse Wonnerup Wetland System investigation node. National Estuaries Network (NEN) science symposium. Busselton, Australia.
  27. Tweedley, J.R., Beatty, S.J. Cottingham, A. & Valesini, F.J. (2015). The fish fauna of the Vasse-Wonnerup: life in an extreme estuarine environment. National Estuaries Network (NEN) science symposium. Busselton, Australia.
  28. Tweedley, J.R., Beatty, S.J., Keleher, J. & Lynch, K. (2015). Understanding and mitigating the influence of historical managerial decisions on the fauna of the Vasse-Wonnerup. 11th Annual Wetland Management Conference. Cockburn, Australia.
  29. Tweedley. J.R., Loneragan, N.R., Jenkins, G., Trayler, K. & Chaplin, J.A. (2014). Assessing the decline in western school prawn (Metapenaeus dalli) abundance in a temperature Australian estuary:  evaluating the effectiveness of prawn releases and the impacts of environmental change. 2014 Annual Symposium of the Fisheries Society of the British Isles. Hull, United Kingdom. Cited 2 times.
  30. Tweedley, J.R. (2014). Life as post-doc. 12thAustralian Marine Science Association (AMSA) Marine Science Student Workshop 2014. Rottnest Island, Australia. * This was an invited presentation to discuss my career thus far.
  31. Robinson, S., Valesini, F.J., Hipsey, M. & Tweedley, J.R. (2014). Characterising the shifts in benthic macroinvertebrate assemblages in the Swan-Canning Estuary in relation to changing hydrological and biogeochemical conditions. 12thAustralian Marine Science Association (AMSA) Marine Science Student Workshop 2014. Rottnest Island, Australia.
  32. Bennett, A., Tweedley, J.R., Loneragan, N.R. & Poh, B. (2014). Influence of sediment conditions on the decline of the Western School Prawn (Metapenaeus dalli) in a temperate Australian Estuary. 12thAustralian Marine Science Association (AMSA) Marine Science Student Workshop 2014. Rottnest Island, Australia.
  33. Crisp, J., Moheimani, N., Tweedley, J.R., D’Souza, F. & Partridge, G. (2014). Larval development and rearing of the Western School Prawn Metapenaeus dalli (Racek) in the laboratory. 12thAustralian Marine Science Association (AMSA) Marine Science Student Workshop 2014. Rottnest Island, Australia.
  34. Poh, B, Tweedley, J.R., Chaplin, J.A., Loneragan, N.R. & Trayler, K. (2014). Monitoring the restocking of the Western School Prawn (Metapenaeus dalli) in the Swan-Canning Estuary. 12th Australian Marine Science Association (AMSA) Marine Science Student Workshop 2014. Rottnest Island, Australia.
  35. 35.Tweedley, J.R., Beatty, S.J., Lymbery, A. & Ash, A. (2014). Salty Goldfish: Goldfish can use wetlands as ‘bridges’ to invade new rivers. 10th Annual Wetland Management Conference. Cockburn, Australia.
  36. Tweedley, J.R., Keleher, J., Beatty, S.J. & Lymbery, A. (2014). Fishes of the Vasse-Wonnerup: life in an extreme estuarine environment. 10th Annual Wetland Management Conference. Cockburn, Australia.
  37. Beatty, S., Morgan, D. & Tweedley, J.R. (2013). Salted fish: a review of fishes in extreme salinity and how anthropogenic changes in salinity have driven community shifts in Western Australia. 9th Indo Pacific Fish Conference. Okinawa, Japan.
  38. Loneragan, N.R., Jenkins, G., Stagles, I. & Tweedley, J.R. (2013). An overview of restocking and stock enhancement research and a focus on ecological understanding gained from stocking black bream in the Blackwood River. South West Catchment Council (SWCC) South West Marine Conference 2013. Bunker Bay, Australia. 
  39. Veale, L.J., Coulson, P., Potter, I.C., Tweedley, J.R., Hallett, C.S. & Hoeksema, S.D. (2013). Shifts in the characteristics of the fish faunas of the Peel-Harvey Estuary in response to anthropogenic and climatic changes. South West Catchment Council (SWCC) South West Marine Conference 2013. Bunker Bay, Australia.
  40. Tweedley, J.R., Beatty, S., Lymbery, A., Keleher, J. & Morgan, D. (2013).The fish faunas of the Vasse-Wonnerup: life in an extreme estuarine environment. South West Catchment Council (SWCC) South West Marine Conference 2013. Bunker Bay, Australia.
  41. Tweedley, J.R. Valesini, F.J., Warwick, R.M., Wildsmith, M.D. & Potter, I.C. (2013). How healthy are estuaries in south-western Australia? Let’s ask the benthic invertebrates. South West Catchment Council (SWCC) South West Marine Conference 2013. Bunker Bay, Australia.
  42. Tweedley, J.R. (2013). My journey: why in my opinion marine biology is one of the best jobs in the world. National Youth Science Forum. Perth, Australia. * This was an invited presentation to discuss my career thus far.
  43. Valesini, F.J., Tweedley, J.R., Hallett, C.S., Linke, T.E., Hallett, C.S. & Potter, I.C. (2012). Relationships between ichthyofaunal characteristics and habitats derived using enduring environmental variables 50th Estuarine and Coastal Sciences Association (ECSA) International Conference. Venice, Italy.
  44. Veale, L., Coulson, P., Hoeksema, S.D., Tweedley, J.R., Hall, N.G. & Potter, I.C. (2011). The characteristics of the fish assemblages of the Peel-Harvey Estuary: are they linked to eutrophication? Coastal and Estuarine Research Federation Conference 2011. Daytona, USA.
  45. Tweedley, J.R., Hallett, C.S. & Hoeksema, S.D. (2011). The impact of artificial oxygenation on the benthic macroinvertebrate fauna of the Swan-Canning Estuary: results after one year of seasonal sampling. Swan River Trust: River Forum 2011. Perth, Australia.
  46. Tweedley, J.R., Valesini, F.J. & Potter, I.C. (2011). The biogeography and species composition of the fish faunas of estuaries on the south-western Australian coastline. The Royal Society of Western Australia 13th Annual Postgraduate Symposium. Perth, Australia.
  47. Tweedley, J.R. Valesini, F.J., Hoeksema, S.D. & Potter, I.C. (2011). Relationships between fish and benthic macroinvertebrate faunas and habitat types in Broke Inlet, Western Australia. Australian Marine Sciences Association Conference 2011. Fremantle, Australia.
  48. Valesini, F.J., Hourston, M., Wildsmith, M.D., Coen, N.J., Tweedley, J.R., Linke, T.E., Hallett, C.S. & Potter, I.C. (2011). Classifying estuarine habitats and predicting their fish faunas – tools for managers and ecologists. Australian Marine Sciences Association Conference 2011. Fremantle, Australia.
  49. Veale, L., Coulson, P., Hoeksema, D., Tweedley, J.R., Hall, N.G. & Potter, I.C. (2011). The characteristics of the fish assemblages of the Leschenault Estuary. Inter-period comparisons and their management implications. National Estuaries Network (NEN) science symposium. Perth, Australia.
  50. Valesini, F.J., Hourston, M., Wildsmith, M.D., Coen, N.J, Tweedley, J.R., Linke, T.E., Hallett, C.S. & Potter, I.C. (2011). Classifying estuarine habitats and predicting their fish faunas. National Estuaries Network (NEN) science symposium. Perth, Australia.
  51. Tweedley, J.R. Valesini, F.J., Hoeksema, S.D. & Potter, I.C. (2011). Relationships between fish and benthic macroinvertebrate faunas and habitat types in Broke Inlet, Western Australia. National Estuaries Network (NEN) science symposium. Perth, Australia.
  52. Valesini, F.J., Hourston, M., Wildsmith, M.D., Coen, N.J., Tweedley, J.R., Linke, T.E., Hallett, C.S. & Potter, I.C. (2011). Classifying estuarine habitats and predicting their fish faunas. 14th South African Marine Science Symposium (SAMSS)/ 49th Estuarine and Coastal Sciences Association (ECSA) International Conference. Grahamstown, South Africa.
  53. Tweedley, J.R. Valesini, F.J., Hoeksema, S.D. & Potter, I.C. (2011). Relationships between fish and benthic macroinvertebrate faunas and habitat types in a seasonally-open Australian estuary. 14th South African Marine Science Symposium (SAMSS)/ 49th Estuarine and Coastal Sciences Association (ECSA) International Conference. Grahamstown, South Africa. * This presentation won the runner-up prize for best student presentation at this international conference.
  54. Tweedley, J.R. (2010). North vs South: comparing the estuarine environment and faunal assemblages of Broke Inlet, south-western Australia to those in the northern hemisphere. The Royal Society of Western Australia 12th Annual Postgraduate Symposium. Perth, Australia.
  55. Tweedley, J.R. & Valesini, F.J. (2010). Evaluating the effectiveness of a habitat classification scheme for south-western Australia estuaries in Broke Inlet. 8thAustralian Marine Science Association (AMSA) Marine Science Student Workshop 2010. Rottnest Island, Australia.
  56. Tweedley, J.R. (2010). The fauna of Broke Inlet: some comparisons with holarctic estuaries. 8thAustralian Marine Science Association (AMSA) Marine Science Student Workshop 2010. Rottnest Island, Australia.
  57. Tweedley, J.R., Valesini, F.J., Hoeksema, S. & Potter, I.C. (2010). Relationships between habitats types and faunas in Broke Inlet (SW Australia). WAMSI and AMSA-WA Marine Science in Western Australia: Show and Tell Symposium. Fremantle, Australia.
  58. Tweedley, J.R., Valesini, F.J., Hoeksema, S. & Potter, I.C. (2009). Inter-relations between fish faunas and habitat types in a seasonally-open estuary in south-western Australia. 8th Indo Pacific Fish Conference and 2009 Australian Society of Fish Biology (ASFB) Workshop and Conference. Fremantle, Australia.
  59. Tweedley, J.R. (2009). Inter-relationships between habitat types and faunal assemblages in a seasonally-open estuary in south-western Australia. South West Catchment Council (SWCC) South West Marine Conference 2009. Busselton, Australia.
  60. Valesini, F.J., Potter, I.C., Wildsmith, M.D., Hourston, M., Coen, N.J. & Tweedley, J.R. (2008) Nearshore habitat classification. The Western Australian Marine Science Institution (WAMSI) Annual Marine Research Presentations 2008. Perth, Australia
  61. Tweedley, J.R. (2008). Habitat and faunal inter-relationships in Broke Inlet. Australian Marine Science Association (AMSA) Marine Science Student Workshop 2008. Rottnest Island, Australia.
  62. Tweedley, J.R. (2007).The relationship between habitat types and faunal community structure and trophic interactions in the Broke Inlet, Western Australia. Australian Marine Science Association (AMSA) Marine Science Student Workshop 2007. Rottnest Island, Australia.

Poster presentations

  1. Hallett, C.S., Valesini, F.J. & Tweedley, J.R. (2015). The Fish Community Index – a simple and robust tool for monitoring and reporting estuarine health. Australian Society for Fish Biology Conference 2015. Sydney, Australia.
  2. Tweedley, J.R., Beatty, S.J., Cottingham, A., Keleher, J.J. & Lynch, K. (2015). Past, present and future: mitigating historical management actions to preserve fish for the future. Australian Society for Fish Biology Conference 2015. Sydney, Australia.
  3. Bennett, A.L., Tweedley, J.R., Poh, B. & Loneragan, N.R. (2015). Assessing the sediment preference of a penaeid prawn to inform release strategies. 5th International Symposium on Stock Enhancement and Sea Ranching. Sydney, Australia.
  4. Broadley, A., Tweedley, J.R. & Loneragan, N.R. (2015). Estimation of biological parameters for the bioeconomic evaluation of restocking the Western School Prawn (Metapenaeus dalli) in an Australian estuary. 5th International Symposium on Stock Enhancement and Sea Ranching. Sydney, Australia.
  5. Tweedley, J.R., Hallett, C.S., Warwick, R.M., Clarke, K.R., Potter, I.C. & Valesini, F.J. (2015). Dramatic impacts of storm-induced hypoxia on the benthos of a microtidal estuary. Estuarine Coastal Science Association Conference 55. London, United Kingdom.
  6. Tweedley, J.R., Beatty, S.J., Keleher, J. & Lynch, K. (2015). Understanding and mitigating the influence of historical managerial decisions on the fauna of the Vasse-Wonnerup. 11th Annual Wetland Management Conference. Cockburn, Australia. Cited once.
  7. Bennett, A., Tweedley, J.R., Loneragan, N.R. & Poh, B. (2014).The influence of sediment conditions on the decline of the western school prawn (Metapenaeus dalli) in a temperate Australian estuary. 2014 Annual Symposium of the Fisheries Society of the British Isles. Hull, United Kingdom.
  8. Broadley, A., Tweedley, J.R., Poh, B. & Loneragan, N.R. (2014). Estimation of biological parameters for evaluating the success of western school prawn (Metapenaeus dalli) releases in a temperate Australian estuary. 2014 Annual Symposium of the Fisheries Society of the British Isles. Hull, United Kingdom.
  9. Tweedley, J.R., Beatty, S.J., Lymbery, A. & Ash, A. (2014). Salty Goldfish: Goldfish can use wetlands as ‘bridges’ to invade new rivers. 10th Annual Wetland Management Conference. Cockburn, Australia.
  10. Tweedley, J.R., Keleher, J., Beatty, S.J. & Lymbery, A. (2014). Fishes of the Vasse-Wonnerup: life in an extreme estuarine environment. 10th Annual Wetland Management Conference. Cockburn, Australia. Cited once.
  11. Tweedley, J.R. & Potter, I.C. (2013). The ways in which fish use estuaries: a refinement and expansion of the guild approach. South West Catchment Council (SWCC) South West Marine Conference 2013. Bunker Bay, Australia.
  12. Boladeras, V., Tweedley, J.R., Beatty, S.J. & Lymbery, A. (2012). Preliminary investigation into the fish fauna of the Vasse-Wonnerup Wetland System. The Royal Society of Western Australia 14th Annual Postgraduate Symposium. Perth, Australia.
  13. Tweedley, J.R., Valesini, F.J., Platell, M.E., Warwick, R.M. & Potter, I.C. (2011). Comparisons of the benthic macroinvertebrate faunas in seasonally-open oligotrophic and eutrophic microtidal estuaries as indicators of environmental degradation. Swan River Trust: River Forum 2011. Perth, Australia. 
  14. Tweedley, J.R., Valesini, F.J., Platell, M.E., Warwick, R.M. & Potter, I.C. (2011). Comparisons of the benthic macroinvertebrate faunas in seasonally-open oligotrophic and eutrophic microtidal estuaries as indicators of environmental degradation. The Royal Society of Western Australia 13th Annual Postgraduate Symposium. Perth, Australia.
  15. Tweedley, J.R., Valesini, F., Hoeksema, S. & Potter, I.C. (2010). Classifying habitats in Broke Inlet using Enduring Environmental Variables. The Royal Society of Western Australia 12th Annual Postgraduate Symposium. Perth. Australia.

Professional and community service

I am a member of the following associations: Fisheries Society of the British Isles (www.fsbi.org.uk), Marine Biological Association of the United Kingdom (www.mba.ac.uk/) World Seagrass Association (www.worldseagrass.org/), Australian Marine Science Association (www.amsa.asn.au/), Australian Society for Fish Biology (www.asfb.org.au/), Royal Society of Western Australia (www.royalsocietyofwa.com/) and the Estuarine and Coastal Science Association (www.ecsa-news.org/).

I currently sit WA and National councils for the Australian Marine Science Association and am an executive board member of the West Australian Fish Foundation. I also served for two years on the state and national councils of the Australian Society of Fish Biology.

Doctoral and masters supervisions

I am always looking to take on new Honours students and have a couple of projects available. Please email me with a copy of your CV for more details.

PhD

Sian Glazier: full time from Semester 1 2016 (Co-supervisor with F. Valesini [MU] & G. Hyndes [Edith Cowen University]). Construction of a quantitative food web for the Vasse-Wonnerup using traditional and novel chemical and genetic methods.

Sam Robinson: full time from semester 1 2014 (Co-supervisor with F. Valesini [MU] & M. Hispsey [University of Western Australia]). Development of an ecological response model based on benthic macroinvertebrates in the Upper Swan Estuary.

Brian Poh: PhD, full time from semester 2 2013 (Co-supervisor with N. Loneragan [MU], J. Chaplin [MU] & K. Trayler [Swan River Trust]). Evaluating the population genetics, recruitment limitations and release strategies of Western School Prawns (Metapenaeus dalli) during a restocking program in the Swan-Canning Estuary.

Jason Crisp: PhD, full time from semester 2 2013 (Co-supervisor with N. Moheimani [MU], F. D’Souza [Dept. of Water WA] & G. Partridge [Challenger Institute of Technology]). Algal nutrition for larval Western School Prawns (Metapenaeus dalli).

Lauren Veale: PhD, Full time from semester 2 2008, (Co-supervisor, with I. Potter, P. Coulson & C. Hallett [all MU]). Inter-period comparisons of the ichthyofaunas of two nearby, modified estuaries and the biology of Pelates octolineatus (Terapontidae). PhD conferred 2014.

 

Honours

Sarah Poulton: part time from semester 1 2017 (Co-supervisor with M. Hughes [MU]). Determining the social dimensions of Blue Swimmer Crab fishing and support for different management options to sustain stocks.

Claire Greenwell: full time from semester 1 2017 (Co-supervisor with N. Loneragan [MU]). Western Gloomy Octopus, Octopus cf. tetricus as predators of abalone.

Jake Daviot: full time from Semester 1 2017 (Co-supervisor with D. Fairclough [Dept. of Fisheries WA] and N. Loneragan [MU]). Analysis of fish community data collected in annual surveys of Cockburn Sound using baited remote underwater video.

Theodore Campbell: part time from semester 1 2016 (Co-supervisor with N. Loneragan [MU] and D. Johnston [Dept. of Fisheries WA]). Dietary composition of the Blue Swimmer Crab, Portunus armatus, and life history characteristics of related species. 1st class.

Tim Walker: full time from semester 1 2016 (Principal supervisor with J. Chaplin [MU]). Fish assemblages of artificial reefs in Geographe Bay in south-western Australia: an analysis of spatial and temporal trends based on video footage collected by recreational fishers.

Kyle Hodson: full time from semester 1 2016 (Principal supervisor with N. Loneragan [MU]). Maximising the success of restocking: development of a GIS based tool to determine most appropriate release sites.

Keyley Hogan-West: full time from semester 1 2015 (Co-supervisor with N. Loneragan & P. Coulson [MU]). Biology and ecology of the non-indigenous goby Acentrogobius pflaumii (Bleeker 1853) in the Swan-Canning Estuary. 1st class.

Tom Bateman: full time from semester 2 2014 (Co-supervisor with J. Chaplin [MU]). Artificial Reefs: types, applications, trends in deployment and the development of a cost-effective method for monitoring their fish faunas? 1st class.

James Florisson: full time from semester 1 2015 (Principal supervisor with H. Gill & J. Chaplin [MU]). Can recreational fishers provide a cost effective means for monitoring artificial reefs? IIa.

Amber Bennett: full time from semester 1 2014 (Principal supervisor with N. Loneragan [MU]). The influence of sediment compositions on the Western School Prawn Metapenaeus dalli in a temperate Australian estuary. 1st class.

Andrew Broadley: full time from semester 1 2014 (Co-supervisor with N. Loneragan [MU]). Assessing the potential for restocking the Western School Prawn Metapenaeus dalli in a temperate Australian estuary. 1st class.

 

Independent study contract

Claire Greenwell; semester 1 2016 (Co-supervisor with P. Coulson [MU] and N. Loneragan [MU]). Diet of the Bighead Gurnard Perch Neosebastes pandus. High distinction.

Kyle Hodson; semester 1 2015 (Principal supervisor with N. Loneragan [MU]). Determining which fish species in the Swan-Canning Estuary predate on restocked post-larval Western School Prawns. High distinction.

Dale Maschette: semester 1 2013 (Co-supervisor with P. Coulson [MU]). To what extent is the dietary composition of Bight Redfish (Centroberyx gerrardi) related to body size? High distinction.

James Florisson: semester 1 2012 (Principal supervisor with C. Hallett [MU]). Fish fauna of the Vasse-Wonnerup Wetland System. Credit.

Shona Wharton: semester 1 2012 (Co-supervisor with N. Loneragan [MU]). Environmental variation and fish faunas of the Swan Estuary. High distinction.

Publications

Journal articles

  1. Tweedley, J.R., Hallett, C.S. & Beatty, S.J. (In press). Baseline survey of the fish fauna of a highly eutrophic estuary and evidence for its colonisation by Goldfish (Carassius auratus). International Aquatic Research. DOI: 10.1007/s40071-017-0174-1.
  2. Beatty. S.J., Allen, M.G., Whitty, J.M., Lymbery, A.J., Keleher, J.J., Tweedley, J.R., Ebner, B.C. & Morgan, D.L. (2017). First evidence of spawning migration by goldfish Carassius auratus and the implications for control of a globally invasive species. Ecology of Freshwater Fishes. 26(3): 444-455 DOI: 10.1111/eff.12288.
  3. Tweedley, J.R., Warwick, R.M., Hallett, C.S., Potter, I.C. (2017). Fish-based indicators of estuarine condition that do not require reference data. Estuarine Coastal and Shelf Science. 191: 209-220. DOI: 10.1016/j.ecss.2017.04.015.
  4. Crisp, J.A., D’Souza, F.M.L., Tweedley, J.R., Partridge, G.J. & Moheimani, N.R. (2017). Quantitative determination of ovarian development in penaeid prawns (Decapoda: Penaeidae). Journal of Crustacean Biology. 37(1): 81-89. DOI: 10.1093/jcbiol/ruw001. Cited 2 times.
  5. Crisp, J.A., Partridge, G.J., D’Souza, F.M.L., Tweedley, J.R. & Moheimani, N.R. (2017). Effects of temperature and salinity on larval survival and development of the western school prawn Metapenaeus dalli. International Aquatic Research. 9: 1-10. DOI: 10.1007/s40071-016-0151-0. Cited once.
  6. Broadley, A.D., Tweedley, J.R. & Loneragan, N.R. (2017). Estimating biological parameters for potential penaeid restocking in a temperate estuary. Fisheries Research.186(2): 488-501. DOI: 10.1016/j.fishres.2016.09.007. Cited 2 times.
  7. Tweedley, J.R. Warwick, R.M & Potter, I.C. (2016). The contrasting ecology of temperate macrotidal and microtidal estuaries. Oceanography and Marine Biology: An Annual Review. 54: 73-171. DOI: 10.1201/9781315368597-3. Cited 5 times.
  8. Calver, M.C. & Tweedley, J.R. (2016). A technique for expediting comprehensive written feedback on assignments. American Biology Teacher.78: 684–686. DOI: 10.1525/abt.2016.78.8.684.
  9. Potter, I.C., Veale, L., Tweedley, J.R. & Clarke, K.R. (2016). Decadal changes in the ichthyofauna of a eutrophic estuary following a remedial engineering modification and subsequent environmental shifts. Estuarine, Coastal and Shelf Science.181: 345-363. DOI:10.1016/j.ecss.2016.08.023.
  10. Crisp, J.A., Tweedley, J.R., D’Souza, F.M.L., Partridge, G.J., Moheimani, N.R. (2016). Larval development of Metapenaeus dalli (Racek) (Crustacea: Decapoda: Penaeidae) reared in the laboratory, including comparisons with other metapenaeids. Journal of Natural History. 50(27-28): 1699-1724. DOI: 10.1080/00222933.2016.1155669. Cited 4 times.
  11. Tweedley, J.R., Hallett, C.S., Warwick, R.M., Clarke, K.R. & Potter, I.C. (2016). The hypoxia that developed in a microtidal estuary following an extreme storm produced dramatic changes in the benthos. Marine & Freshwater Research. 67(3): 327-341. DOI:10.1071/MF14216. Cited 8 times.
  12. Tweedley, J.R. Warwick, R.M & Potter, I.C. (2015). Can biotic indicators distinguish between natural and anthropogenic environmental stress in estuaries? Journal of Sea Research. 102: 10-21. DOI:10.1016/j.seares.2015.04.001. Cited 11 times.
  13. Potter, I.C., Tweedley, J.R., Elliott, M. & Whitfield, A.K. (2015). The ways in which fish use estuaries: a refinement and expansion of the guild approach. Fish and Fisheries. 16(2): 230-239. DOI:10.1111/faf/12050. Cited 90 times.
  14. Veale, L., Tweedley, J.R., Clarke, K.R., Hallett, C.S. & Potter, I.C. (2014). Characteristics of the ichthyofauna of a temperate microtidal estuary with a reverse salinity gradient, including inter-decadal comparisons. Journal of Fish Biology. 85(5): 1320-1354. DOI: 10.1111/jfb.12467. Cited 9 times.
  15. Valesini, F.J., Tweedley, J.R., Clarke, K.R. & Potter, I.C. (2014). The importance of local, system-wide and regional spatial scales in structuring temperate estuarine fish communities. Estuaries and Coasts. 37:525–547. DOI: 10.1007/s12237-013-9720-2. Cited 15 times.
  16. Tweedley, J.R., Warwick, R.M., Clarke, K.R. & Potter, I.C. (2014). Family-level AMBI is valid for use in the north-eastern Atlantic but not for assessing the health of microtidal Australian estuaries. Estuarine, Coastal and Shelf Science. 141: 85-96. DOI: 10.1016/j.ecss.2014.03.002. Cited 18 times.
  17. Clarke, K.R., Tweedley, J.R. & Valesini, F.J. (2014). Simple shade plots aid better long-term choices of data pre-treatment in multivariate assemblage studies. Journal of the Marine Biological Association of the United Kingdom. 94(1): 1-16. DOI: 10.1017/S0025315413001227. Cited 34 times.
  18. Tweedley, J.R., Bird, D.J., Potter, I.C., Gill, H.S., Miller, P.J., O’Donovan, G. & Tjakrawidjaja, A.H. (2013). Species compositions and ecology of the riverine ichthyofaunas on two Sulawesian islands in the biodiversity hotspot of Wallacea. Journal of Fish Biology. 82: 1916-1950. DOI: 10.1111/jfb.12121. Cited 8 times.
  19. Tweedley, J.R., Warwick, R.M., Valesini, F.J., Platell, M.E. & Potter, I.C. (2012). The use of benthic macroinvertebrates to establish a benchmark for evaluating the environmental quality of southern hemisphere estuaries. Marine Pollution Bulletin. 64: 1210-1221. DOI: 10.1016/j.marpolbul.2012.03.006. Cited 24 times.
  20. Lek, E., Fairclough, D.V., Platell, M.E., Clarke, K.R., Tweedley, J.R. & Potter, I.C. (2011). To what extents are the dietary compositions of three abundant, co-occurring labrid species different and related to latitude, habitat, body size and season? Journal of Fish Biology.78(7): 1913-1943. DOI: 10.1111/j.1095-8649.2011.02961.x. Cited 36 times.
  21. Tweedley, J.R., Jackson, E.L. & Attrill, M.J. (2008). Zostera marina seagrass beds enhance the attachment of the invasive alga Sargassum muticum in soft sediments. Marine Ecology Progress Series. 354: 305-309. DOI: 10.3354/meps07242. Cited 29 times.

Book chapters

  1. Potter, I.C., Warwick, R.M., Hall, N.G., & Tweedley, J.R. (2015). The physico-chemical characteristics, biota and fisheries of estuaries, in: Craig, J. (Ed.) Freshwater Fisheries Ecology, Wiley-Blackwell. pp.48-79. Cited 9 times.

Abstracts

  1. Tweedley, J.R., Valesini, F.J. & Potter, I.C. (2011). The biogeography and species composition of the fish faunas of estuaries on the south-western Australian coastline. Proceedings of the Royal Society of Western Australia October: p11.
  2. Tweedley, J.R., Valesini, F.J., Hoeksema, S.D. & Potter, I.C. (2010). Classifying habitats in Broke Inlet using enduring environmental variables. Proceedings of the Royal Society of Western Australia October: p10.
  3. Tweedley, J.R. (2010). North vs South: Comparing the estuarine environment and faunal assemblages of Broke Inlet, south-western Australia to those in the northern hemisphere. Proceedings of the Royal Society of Western Australia October: p7.

Reports

  1. Jenkins, G.I., Tweedley, J.R. & Trayler, K.M. (2017). Re-establishing recreational prawning in the Swan-Canning Estuary. Report for the Recreational Fishing Initiatives Fund. Report for Recfishwest. Western Australian Fish Foundation, Perth, Western Australia. 126 pp. Available from http://researchrepository.murdoch.edu.au/id/eprint/36812/.
  2. Beatty, S.J., Whitty, J., Allen, M., Tweedley, J.R. & Morgan, D. (2016). Movement and abundance of key fishes in the Vasse-Wonnerup Estuary following a substantial fish kill. Report for the State Natural Resource Management Program, Western Australia. Murdoch University, Perth, Western Australia. 11 pp.
  3. Tweedley, J.R., Cottingham, A. & Beatty, S.J. (2016). Monitoring the recruitment success of Black Bream in the Vasse-Wonnerup two years after a large fish kill. Report for the Department of Water, Western Australia. Murdoch University, Perth, Western Australia. 23 pp. Available from http://researchrepository.murdoch.edu.au/31196/.
  4. Stagles, I., Jenkins, J.I. & Tweedley, J.R. (2016). Restocking Mulloway into the Swan River or Geraldton area. Report for the Recreational Fishing Initiatives Fund. Western Australian Fish Foundation, Perth, Western Australia. 28 pp.
  5. Tweedley, J.R., Florisson, J.H., Bateman, T.A., Chaplin, J.A. & Gill, H.S. (2016). Can recreational fishers provide a cost effective means for monitoring artificial reefs? Report for the Recreational Fishing Initiatives Fund. Murdoch University, Perth, Western Australia. 208 pp. DOI: 10.13140/RG.2.2.22779.92963. Available from http://researchrepository.murdoch.edu.au/34070/.
  6. Tweedley, J.R. & Chaplin, J.A. (2015). The application, needs, costs and benefits of habitat enhancement structures in Western Australia. III Bibliographic analysis of scientific literature on habitat enhancement structures. Report for Recfishwest and the Fisheries Research and Development Cooperation. Murdoch University, Perth, Western Australia. 290 pp.
  7. Bateman, T.A., Tweedley, J.R. & Chaplin, J.A. (2015). The application, needs, costs and benefits of habitat enhancement structures in Western Australia. II Trends in artificial reef construction, design and management in Australia. Report for Recfishwest and the Fisheries Research and Development Cooperation. Murdoch University, Perth, Western Australia. 24 pp.
  8. Surman, C.A., Bateman, T.A., Tweedley, J.R. & Nicholson, L.W. (2015). The application, needs, costs and benefits of habitat enhancement structures in Western Australia. I Review of design, application and deployment of habitat enhancement structures. Report for Recfishwest and the Fisheries Research and Development Cooperation. Murdoch University, Perth, Western Australia. 131 pp.
  9. Cottingham, A., Tweedley, J.R., Green, A.T., Green, T.A., Beatty, S.J. & Potter, I.C. (2015). Key biological information for the management of Black Bream in the Vasse-Wonnerup. Report for Geographe Bay Catchment Council. Murdoch University, Perth, Western Australia. 40 pp. Available from http://researchrepository.murdoch.edu.au/29346/. Cited once.
  10. Jenkins, G.I., Trayler, K.M., Tweedley, J.R., Stagles, I. & Loneragan, N.R. (2015). Production and release of Western School Prawns into the Swan-Canning River park over a three year period to enhance the community values of the recreational prawn fishery. Report for the Recreational Fishing Initiatives Fund. Western Australian Fish Foundation, Perth, Western Australia. 192 pp.
  11. Valesini, F.J. & Tweedley, J.R. (2015). Effect of the Becher Point boat ramp on the food resources of Little Penguins on Penguin Island. Report for the Department of Parks and Wildlife. Murdoch University, Perth, Western Australia. 121 pp.
  12. Hallett, C.S. & Tweedley, J.R. (2015). Assessment of the condition of the Swan Canning Estuary in 2015, based on the Fish Community Indices of estuarine condition. Report for the Swan River Trust, Murdoch University, Perth, Western Australia. 37 pp. Available from http://researchrepository.murdoch.edu.au/27495/.
  13. Tweedley, J.R. & Hallett, C.S. (2014). Monitoring the effects of artificial oxygenation on biota in the Swan-Canning Estuary, Western Australia. Report for the Swan River Trust. Murdoch University, Perth, Western Australia. 72pp. Available from http://www.swanrivertrust.wa.gov.au/the-river-system/tackling-the-issues/addressing-water-quality-and-ecological-health/oxygenation.
  14. Beatty, S.J., Tweedley, J.R., Lymbery, A.J., Keleher, J., Allen, M.G. & Morgan, D.L. (2014). Introduced and native fishes in the Vasse‐Wonnerup Ramsar Wetland and its rivers. Report to the Australian Government through its Caring for our Country Program. Report for Project Steering Committee. Murdoch University, Perth, Western Australia. 139 pp. Available from http://www.freshwaterfishgroup.com/resources/Vasse%20Wonnerup%20Fishes%20Scientific%20Report%20FFGFHU%20CFFR%20Final%202014.pdf. Cited once.
  15. Hallett, C.S. & Tweedley, J.R. (2014). Assessment of the condition of the Swan Canning Estuary in 2014, based on the Fish Community Indices of estuarine condition. Report for the Swan River Trust, Murdoch University, Perth, Western Australia. 30 pp. Available from http://researchrepository.murdoch.edu.au/23386/.
  16. Tweedley, J.R., Keleher, J., Cottingham, A., Beatty, S.J. & Lymbery, A. (2014). The fish fauna of the Vasse-Wonnerup and the impact of a substantial fish kill event. Report for Geographe Bay Catchment Council. Murdoch University, Perth, Western Australia. 113 pp. Available from http://researchrepository.murdoch.edu.au/28576/. Cited 2 times.
  17. Chambers, J.M., Tweedley, J.R., Clarke, A. & Paice, R. (2013). Snapshot survey of the distribution and abundance of the macrophytes, macroalgae, phytoplankton and macroinvertebrates of the Vasse-Wonnerup Lagoons January, 2012. Report for Geographe Bay Catchment Council. Murdoch University, Perth, Western Australia. 48 pp. Cited 5 times.
  18. Tweedley, J.R., Beatty, S.J., & Lymbery, A.J. (2013). Control of introduced fish and crayfish in the Vasse-Wonnerup Ramsar Wetland: Final MERI report. Report for Caring for our Country. Murdoch University, Perth, Western Australia. 41 pp.
  19. Tweedley, J.R. Beatty, S.J., Allen, M. & Lymbery, A.J. (2013). Increasing community awareness of feral fish in the Vasse-Wonnerup Wetland. Report for Coastwest. Murdoch University, Perth, Western Australia. 29 pp.
  20. Tweedley, J.R., Chambers, J.M. & Paice, R. (2013). Sediment accumulation and resuspension in the Vasse-Wonnerup Wetlands and its relationship to internal nutrient cycling. Report for the South West Catchments Council. Murdoch University, Perth, Western Australia. 54 pp. Available from http://researchrepository.murdoch.edu.au/23851/. Cited once.
  21. Tweedley, J.R., Hallett, C.S. & Chambers, J.M. (2012). A baseline survey of the fish fauna of the highly eutrophic Vasse and Wonnerup estuaries. Report for the South West Catchments Council. Murdoch University, Perth, Western Australia. 20 pp. Available from http://researchrepository.murdoch.edu.au/23795/1/SWCC_Vasse_Fish_Report.pdf. Cited 2 times.
  22. Hesp, S.A., Tweedley, J.R., McAuley, R., Tink, C.J., Campbell, R.A., Chuwen, B.M. & Hall, N.J. (2012).  Informing risk assessment through estimating interaction rates between Australian sea lions and Western Australia’s temperate demersal gillnet fisheries. Report for Fisheries Research and Development Corporation. Murdoch University, Perth, Western Australia. 82 pp. Available from http://www.frdc.com.au/documentlibrary/finalreports/2009-096-DLD.pdf. Cited once.
  23. Tweedley, J.R., Chambers, J.M. & Potter, I.C. (2011). The benthic macroinvertebrate faunas of the Vasse-Wonnerup Estuary as indicators of environmental degradation. Report for the South West Catchments Council. Murdoch University, Perth, Western Australia. 41pp. Available from http://researchrepository.murdoch.edu.au/23850/. Cited 2 times.
  24. Veale, L., Coulson, P., Hoeksema, S., Tweedley, J., Hall, N. & Potter, I. (2010). The characteristics of the fish and crab assemblages of the Leschenault Estuary. Inter-period comparisons and their management implications. Report for the South West Development Commission. Murdoch University, Perth, Western Australia. 58 pp. Available from http://researchrepository.murdoch.edu.au/9387/.
  25. Valesini, F.J., Coen, N.J., Wildsmith, M.D., Hourston, M., Tweedley, J.R., Hallett, C.S., Linke, T.E. & Potter, I.C. (2009) Relationships between fish faunas and habitat type in south-western Australian estuaries. Project 2004/045. Report for Fisheries Research and Development Corporation. Murdoch University, Perth, Western Australia. 486 pp. Available from http://www.frdc.com.au/documentlibrary/finalreports/2004-045-DLD.pdf. Cited 12 times.
  26. Tweedley, J.R. & Valesini, F.J. (2008). Inter-relationships between benthic macroinvertebrates and habitat types in Broke Inlet, south-western Australia. Report to the Ernest Hodgkin Trust for Estuary Education and Research. Murdoch University, Perth, Western Australia. 34 pp. Available from http://researchrepository.murdoch.edu.au/9386/. Cited once.