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Dr Justin Rizzari



Lecturer in Fisheries Science


Faculty of Sci Eng & Built Env


School of Life & Env. Sciences


Geelong Waurn Ponds Campus


Doctor of Philosophy, James Cook University, 2015



Dr. Justin Rizzari is a Fisheries Scientist. He joined the School of Life and Environmental Sciences at Deakin University as a Lecturer in Fisheries in 2018. Justin has a Bachelor of Science in Marine and Coastal Resources from Texas A & M University – Corpus Christi. In 2011, he moved to Australia and completed a Postgraduate Diploma of Research Methods in Tropical Marine Ecology and Fisheries Biology at James Cook University (JCU). In 2015, Justin then went on to complete his PhD in Marine Biology at JCU. Prior to joining Deakin, he was a postdoc at JCU where he worked on modelling the interactive effects of benthic habitat change and marine reserves on coral reef fishes in the Philippines. After that he was a research fellow at the University of Tasmania, specialising in the high-value southern rock lobster and giant crab fisheries. Justin’s research interests span a diverse portfolio encompassing fisheries biology, quantitative fisheries science, assessments of commercial and recreational fisheries, marine conservation, spatial ecology, and the impacts of global change on fisheries. He also has a strong research interest in elasmobranch communities.

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Oceania Chondrichthyan Society

Australian Society for Fish Biology

Society for Conservation Biology

Surfrider Foundation

Units taught

SLE134 - Recreational Fisheries Science

SLE343 - Fisheries Management 

SLE105 - Marine Pollution


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Parks for sharks: human exclusion areas outperform no?take marine reserves

Ashley Frisch, J Rizzari

(2019), Vol. 17, pp. 145-150, Frontiers in ecology and the environment, Hoboken, N.J., C1


Recovery potential of mutualistic anemone and anemonefish populations

A Frisch, J Hobbs, S Hansen, D Williamson, M Bonin, G Jones, J Rizzari

(2019), Vol. 218, pp. 1-9, Fisheries research, Amsterdam, The Netherlands, C1



J Rizzari, B Finucci

(2019), Vol. 29, pp. R352-R353, Current Biology, Cambridge, Mass., C1


Supply risk of bait in Australia's Southern Rock Lobster Fishery

Justin Rizzari, Caleb Gardner

(2019), Vol. 108, pp. 1-5, Marine policy, Amsterdam, The Netherlands, C1


Decadal-scale response of detritivorous surgeonfishes (family Acanthuridae) to no-take marine reserve protection and changes in benthic habitat

Garry Russ, Cody Payne, Brock Bergseth, Justin Rizzari, Rene Abesamis, Angel Alcala

(2018), Vol. 93, pp. 887-900, Journal of fish biology, Chichester, Eng., C1


Partitioning no-take marine reserve (NTMR) and benthic habitat effects on density of small and large-bodied tropical wrasses

Garry Russ, Jake Lowe, Justin Rizzari, Brock Bergseth, Angel Alcala

(2017), Vol. 12, PLoS One, San Francisco, Calif., C1-1


Observations of marine wildlife tourism effects on a non-focal species

J Rizzari, J Semmens, A Fox, C Huveneers

(2017), Vol. 91, pp. 981-988, Journal of fish biology, London, Eng., C1-1


Off-reef planktivorous reef fishes respond positively to decadal-scale no-take marine reserve protection and negatively to benthic habitat change

G Russ, O Aller-Rojas, J Rizzari, A Alcala

(2017), Vol. 38, Marine ecology, Chichester, Eng., C1-1


A test of trophic cascade theory: fish and benthic assemblages across a predator density gradient on coral reefs

Jordan Casey, Andrew Baird, Simon Brandl, Mia Hoogenboom, Justin Rizzari, Ashley Frisch, Christopher Mirbach, Sean Connolly

(2017), Vol. 183, pp. 161-175, Oecologia, Berlin, Germany, C1-1


Key aspects of the biology, fisheries and management of Coral grouper

A Frisch, D Cameron, M Pratchett, D Williamson, A Williams, A Reynolds, A Hoey, J Rizzari, L Evans, B Kerrigan, G Muldoon, D Welch, J Hobbs

(2016), Vol. 26, pp. 303-325, Reviews in fish biology and fisheries, New York, N.Y., C1-1


Reassessing the trophic role of reef sharks as apex predators on coral reefs

A Frisch, M Ireland, J Rizzari, O Lnnstedt, K Magnenat, C Mirbach, J Hobbs

(2016), Vol. 35, pp. 459-472, Coral reefs, New York, N.Y., C1-1


Anemonefish depletion reduces survival, growth, reproduction and fishery productivity of mutualistic anemone-anemonefish colonies

A Frisch, J Rizzari, K Munkres, J Hobbs

(2016), Vol. 35, pp. 375-386, Coral reefs, New York, N.Y., C1-1


Experimental bleaching of a tropical sea anemone in situ

M Finn, O Lnnstedt, J Rizzari, G Jones, A Frisch

(2016), Vol. 37, pp. 691-696, Marine ecology, Chichester, Eng., C1-1


Impact of conservation areas on trophic interactions between apex predators and herbivores on coral reefs

Justin Rizzari, Brock Bergseth, Ashley Frisch

(2015), Vol. 29, pp. 418-429, Conservation biology, Chichester, Eng., C1-1


The parrotfish-coral relationship: refuting the ubiquity of a prevailing paradigm

G Russ, S Questel, J Rizzari, A Alcala

(2015), Vol. 162, pp. 2029-2045, Marine biology, New York, N.Y., C1-1


Decadal-scale effects of benthic habitat and marine reserve protection on Philippine goatfish (F: Mullidae)

G Russ, B Bergseth, J Rizzari, A Alcala

(2015), Vol. 34, pp. 773-787, Coral reefs, New York, N.Y., C1-1


Long-term no-take marine reserve and benthic habitat effects on coral reef fishes

G Russ, K Miller, J Rizzari, A Alcala

(2015), Vol. 529, pp. 233-248, Marine ecology progress series, Oldendorf, Germany, C1-1


Not worth the risk: apex predators suppress herbivory on coral reefs

J Rizzari, A Frisch, A Hoey, M McCormick

(2014), Vol. 123, pp. 829-836, Oikos, Chichester, Eng., C1-1


How robust are estimates of coral reef shark depletion?

J Rizzari, A Frisch, S Connolly

(2014), Vol. 176, pp. 39-47, Biological conservation, Amsterdam, The Netherlands, C1-1


Diversity, abundance, and distribution of reef sharks on outer-shelf reefs of the Great Barrier Reef, Australia

J Rizzari, A Frisch, K Magnenat

(2014), Vol. 161, pp. 2847-2855, Marine biology, New York, N.Y., C1-1


Effects of spearfishing on reef fish populations in a multi-use conservation area

Ashley Frisch, Andrew Cole, Jean-Paul Hobbs, Justin Rizzari, Katherine Munkres

(2012), Vol. 7, PLoS One, San Francisco, Calif., C1-1


Funded Projects at Deakin

Australian Competitive Grants

Understanding the stock structure of rock flathead and the role of movement dynamics in influencing the performance of the Corner Inlet fishery.

Dr Justin Rizzari, Dr Adam Miller

FRDC Grant - Research - Fisheries Research & Development Corporation

  • 2020: $48,465


No completed student supervisions to report