The reverse precautionary principle: science, the environment and the salmon aquaculture industry in Macquarie Harbour, Tasmania, AustraliaJamie B. Kirkpatrick A B , Lorne K. Kriwoken A and Jennifer Styger A
A Geography and Spatial Sciences, School of Land and Food, University of Tasmania, Private Bag 78, Hobart, Tas. 7001, Australia.
B Corresponding author. Email: email@example.com
Pacific Conservation Biology - https://doi.org/10.1071/PC17014
Submitted: 2 May 2017 Accepted: 9 August 2017 Published online: 12 September 2017
Science is frequently used by opposing sides in environment–development debates. Scientific input from an environmental perspective can be inhibited if those in favour of development control research funding. We test whether such a situation can result in outcomes desired by neither of the protagonists, and seek to identify how negative outcomes can be avoided, using the example of fish farming in Macquarie Harbour, Tasmania. A marked decline in dissolved oxygen (DO) at 19–21 m depth in Macquarie Harbour, Tasmania, occurred between 2009 and 2011. DO continues to be low. DO change was associated with changes in the benthic biota, with effects extending from fish farms into the Tasmanian Wilderness World Heritage Area and threatening a Tasmanian endemic fish. The reverse precautionary response of industry and government was to undertake further research because the causes of the changes were not fully understood. We present simple graphs and analyses that suggest that the only substantial predictor of benthic DO reduction is fish production from marine farms, with variability in discharge, catchment rainfall, wind speed, sea surface temperatures and sea level pressure having no effect. Adaptive management of fish farming in Macquarie Harbour seems to require an estuary-wide approach rather than the current attention to the effects of single pens. The broader implications of the case study are that the science related to the environmental impacts of an industry needs to be undertaken by scientists in secure positions funded independently of industry and government.
Additional keywords: dissolved oxygen, fin-fish, politics
ReferencesAgainst Animal Cruelty Tasmania (2014). Factory fish farming. Available at: http://www.aact.org.au/fish.htm [accessed 2 April 2017].
Allchin, R., Kirkpatrick, J. B., and Kriwoken, L. (2013). On not protecting the parrot: the impact of conservation and planning legislation on an endangered species in Tasmania. Journal of International Wildlife Law and Policy 16, 81–104.
| On not protecting the parrot: the impact of conservation and planning legislation on an endangered species in Tasmania.CrossRef |
Anon. (2016). Macquarie Harbour status report update. Available at: http://dpipwe.tas.gov.au/Documents/2016%20Update%20to%20the%20Macquarie%20Harbour%20Status%20Report.pdf [accessed 25 July 2017].
Anon. (undated). MHR – Macquarie Harbour Review – model validation information pack. Review of the Macquarie Harbour Amemendment (sic) management framework and processes. Report to Petuna, Huon and Tassal. Available at: http://dpipwe.tas.gov.au/Documents/MHR%20-%20Macquarie%20Harbour%20Review%20-%20Model%20Validation%20Information%20Pack.pdf [accessed 25 July 2017].
Australia (2014). National aquaculture statement. National Aquaculture Council. Available at: http://www.agriculture.gov.au/Style%20Library/Images/DAFF/__data/assets/pdffile/0005/2391530/national-aquaculture-statement.pdf [accessed 9 April 2017].
Australia (2015). Regulation of the fin-fish aquaculture industry in Tasmania. Environment and Communications References Committee, The Senate, Commonwealth of Australia, Canberra. Available at: http://www.aph.gov.au/Parliamentary_Business/Committees/Senate/Environment_and_Communications/Fin-Fish [accessed 25 July 2017].
Bell, J. D., Lyle, J. M., Semmens, J. M., Awruch, C., Moreno, D., Currie, S., Morash, A., Ross, J., and Barrett, N. (2016). Movement, habitat utilisation and population status of the endangered Maugean skate and implications for fishing and aquaculture operations in Macquarie Harbour. Fisheries Research and Development Corporation Project No. 2013/008. Institute for Marine and Antarctic Studies, University of Tasmania, Hobart.
Bradbury, J. (2013). Lower Gordon River erosion monitoring, Tasmanian Wilderness World Heritage Area. Department of Primary Industries, Parks, Water and Environment, Hobart. Available at: http://dpipwe.tas.gov.au/Documents/LGR%20Monitoring-2013-14.pdf [accessed 25 July 2017].
Clark, A., and Nowak, B. F. (1999). Field investigations of amoebic gill disease in Atlantic salmon, Salmo salar L. in Tasmania. Journal of Fish Diseases 22, 433–443.
| Field investigations of amoebic gill disease in Atlantic salmon, Salmo salar L. in Tasmania.CrossRef |
Crawford, C. (2003). Environmental management of marine aquaculture in Tasmania, Australia. Aquaculture 226, 129–138.
| Environmental management of marine aquaculture in Tasmania, Australia.CrossRef | 1:CAS:528:DC%2BD3sXns1Kqt7Y%3D&md5=9115d8a6f62f3f667c9d224cbb4ff0a0CAS |
Environment Protection Authority (2017). Macquarie Harbour Tasmanian Wilderness World Heritage Area environmental status report, May 2017. Environment Protection Agency, Tasmania. Available at: www.epa.tas.gov.au [accessed 2 August 2017].
Goldacre, B. (2012). ‘Bad Pharma.’ (Fourth Estate: United Kingdom).
Kaiser, M. (1997). Fish-farming and the precautionary principle: context and values in environmental science for policy. Foundations of Science 2, 307–341.
| Fish-farming and the precautionary principle: context and values in environmental science for policy.CrossRef |
Kelly, L. (2017). The science on salmon farming tells a much more nuanced tale. Mercury, 23 February, 18–19. Available at: http://www.themercury.com.au/news/opinion/talking-point-the-science-on-salmon-farming-tells-a-much-more-nuanced-tale/news-story/49f4ed6f558e9bdfd0028aacccb4f3fc [accessed 25 July 2017].
King, R. D., and Tyler, P. A. (1981). Meromictic lakes of south-west Tasmania. Marine and Freshwater Research 32, 741–756.
| Meromictic lakes of south-west Tasmania.CrossRef |
Kirkpatrick, J. B. (1999). The politics of the media and ecological ethics. In ‘Ecology for Everyone’ (Eds R Wills and R Hobbs) pp. 36-41. (Surrey-Beatty: Sydney).
Knight, B., Forrest, B., and Johnston, C. (2015). Macquarie Harbour Environmental and Fish Health Monitoring Review. Report to Department of Primary Industries, Parks, Water and Environment Tasmania. Cawthron Report No. 2729. Available at: http://dpipwe.tas.gov.au/Documents/Report%20Cawthron%20Review.pdf [accessed 25 July 2017].
Lien, M. E. (2007). Feeding fish efficiently. Mobilising knowledge in Tasmanian salmon farming. Social Anthropology 15, 169–185.
| Feeding fish efficiently. Mobilising knowledge in Tasmanian salmon farming.CrossRef |
MHDOWG (Macquarie Harbour Dissolved Oxygen Working Group) (2014). Report to Department of Primary Industries, Parks, Water and Environment Tasmania, 6 October. Available at: http://dpipwe.tas.gov.au/Documents/MHR%20-%20Dissolved%20Oxygen%20Working%20Group%20Report%20Oct%202014.pdf [accessed 25 July 2017].
Pritchard, S., Armitage, R., and Morrison, R. (2017). Busting salmon myths. Mercury, 17 February, 14–15. Available at: http://www.themercury.com.au/news/opinion/talking-point-busting-salmon-myths/news-story/3780936bc746fcfad866a3e64f908853 [accessed 25 July 2017].
Ross, A. (1989). Nuvan use in salmon farming: the antithesis of the precautionary principle. Marine Pollution Bulletin 20, 372–374.
| Nuvan use in salmon farming: the antithesis of the precautionary principle.CrossRef | 1:CAS:528:DyaK3cXhs1Cnu70%3D&md5=2a7168a8ab7182965d225459f564bde0CAS |
Ross, A., and MacLeod, C. (2017). Environmental research in Macquarie Harbour: interim synopsis of benthic and water column conditions. IMAS report to the Environmental Protection Authority and Department of Primary Industries, Parks, Water and Environment Tasmania. Available at: http://epa.tas.gov.au/Documents/IMAS%20Technical% 20Report%20on%20Macquarie%20Harbour%20Condition.pdf [accessed 25 July 2017].
Ross, D. J., McCarthy, A., Davey, A., Pender, A., MacLeod, C. M. (2016) Understanding the Ecology of Dorvilleid Polychaetes in Macquarie Harbour: Response of the benthos to organic enrichment from finish aquaculture. FRDC Final Report Project No 2014/038. Available at: http://www.imas.utas.edu.au/__data/assets/pdf_file/0010/905752/2014-038-DLD-Dorvs.pdf [accessed 22 August 2017].
Tasmania (2017). Sea fishing & aquaculture. Environment Protection Agency, Hobart. Available at: http://epa.tas.gov.au/regulation/salmon-aquaculture [accessed 9 April 2017].
Tasmanian Salmonid Growers Association (2016). Homepage. Available at: www.tsga.com.au/about/ [accessed 9 December 2016].
The Australian (2013). Tasmania’s salmon trade casts deadly net. Available at: www.theaustralian.com.au/news/nation/tasmanias-salmon-trade-casts-deadly-net/story-e6frg6nf-1226667828180?nk= c42ca5c44a33a5e254067f6flb13716a [accessed 7 October 2016].
Treloar, M. A., Barrett, N. S., and Edgar, G. J. (2016). Biology and ecology of Zearaja maugeana, an endangered skate restricted to two south-western Tasmanian estuaries. Marine and Freshwater Research , .
| Biology and ecology of Zearaja maugeana, an endangered skate restricted to two south-western Tasmanian estuaries.CrossRef |
Vanderzwaag, D. (2002). The precautionary principle and marine environmental protection: slippery slopes, rough seas, and rising normative tides. Ocean Development and International Law 33, 165–188.
| The precautionary principle and marine environmental protection: slippery slopes, rough seas, and rising normative tides.CrossRef |
Weart, S. (2011). Global warming: how scepticism became denial. Bulletin of the Atomic Scientists 67, 41–50.
| Global warming: how scepticism became denial.CrossRef |
Wei, B. (2014). Social impact assessment of Tasmanian salmon aquaculture. M.App.Sc. Thesis, University of Tasmania, Hobart.