The reverse precautionary principle: science, the environment and the salmon aquaculture industry in Macquarie Harbour, Tasmania, Australia

2019 ◽  
Vol 25 (1) ◽  
pp. 26 ◽  
Author(s):  
Jamie B. Kirkpatrick ◽  
Lorne K. Kriwoken ◽  
Jennifer Styger

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 19–21m 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.

2007 ◽  
Vol 09 (03) ◽  
pp. 273-297 ◽  
Author(s):  
RONLYN DUNCAN ◽  
PETE HAY

It is argued that under the guise of integrated impact assessment, environmental capacity and quality is being eroded rather than enhanced. This proposition is examined in the context of a World Heritage Area and an integrated impact assessment process for a major energy infrastructure project in Australia known as Basslink. The case study, which charts the negotiations that took place between a proponent, environmental researchers, consultants, regulators and decision-makers for an environmental flow for the iconic Gordon River in Tasmania, describes the 'balance' that was struck in the name of sustainable development. It demonstrates that, while social and economic benefits tend to be identified as one and the same, the environment is constituted as an oppositional "good". We argue that this outcome is the rule rather than the exception and caution that integrated assessments could serve to 'fast-track' the loss of environmental capacity and quality.


2011 ◽  
Vol 3 (2) ◽  
pp. 35-54 ◽  
Author(s):  
Amy Louise Bott ◽  
Simone Maria Grabowski ◽  
Stephen Wearing

The process of listing a World Heritage Area (WHA)c in developing countries is often much more complex than in the West. Often all stakeholders are not taken into consideration and there is a lack of understanding of the concept of World Heritage and what it entails. This is particularly true for stakeholders who live in or adjacent to the proposed WHA, such as local communities. This paper presents a case study of Kokoda and the Owen Stanley Ranges, currently a tentative World Heritage site, to show the complexities in stakeholder collaboration and attribution in the process of World Heritage designation. Six key stakeholders were identified in the study. Upon examination of four attributes of stakeholders: power; legitimacy; urgency; and proximity, it was found that all stakeholders in this case study have a high legitimacy in the listing process however only the local community holds high levels of power, urgency and proximity. Additionally it was found that several stakeholders, like the private sector, have too many weak relationships with other stakeholders, resulting in a lack of communication. These findings present the first step in understanding how it might be possible to improve the listing process of World Heritage Sites in developing countries through effective stakeholder collaboration.


Author(s):  
Are Johan Berstad ◽  
Harald Tronstad ◽  
Stein-Arne Sivertsen ◽  
Endre Leite

A Norwegian Standard NS 9415 (NAS, 2003) has been introduced to the offshore fish farming industry in Norway. This is the first standard dealing with offshore fish farm facilities. The main objective of the standard is to reduce environmental pollution by fish escape. The work process leading to NS 9415 revealed the need for research work in several areas to enhance design criteria with the objective of having a consistent safety level through out the life cycle of a fish farm facility. This paper presents results from a government supported research project with the objective of enhancing criteria for design and operation of fish farm facilities. A case study of a fish farm facility representative for the majority of polyethylene based fish farms in Norway is presented and the sensitivity of such fish farms to variation in the mooring system is shown and discussed for design relevance. The sensitivity of net cage volume to current and weights is presented and discussed. Possible hazards from operational conditions are listed.


1995 ◽  
Vol 31 (10) ◽  
pp. 73-84 ◽  
Author(s):  
T. M. Iversen

The main environmental problems associated with fish farming in Denmark are attributable to the dam, the “dead reach” and nutrient and organic matter discharge. The environmental regulation of fish farming in Denmark started with the Environmental Protection Act of 1974, the Statutory Order of 1985 forbidding wet feed, and the Action Plan on the Aquatic Environment of 1987. In the case of freshwater fish farms, the latter was implemented through the measures stipulated in the 1989 Statutory Order on Fish Farms. The impact of Danish legislative measures to reduce and regulate the environmental effects of freshwater fish farms can be summarized as follows: - the number of fish farms has been reduced from about 800 in 1974 to about 500 at present; - production has tripled since 1974 and has been stable since 1989; - a change from wet to dry feed has reduced the environmental impact of the farms; - the national goals of the Action Plan on the Aquatic Environment of 1987 for reducing fish farm discharges of organic matter, nitrogen and phosphorus have been fulfilled. The main remaining problems are that: - the local impact of fish farms on downstream stream quality is still much too high in about 15% of cases; - the problem of the passage of migrating invertebrates and fish is still unsolved at some farms; - the problems posed by “dead reaches” are still unsolved. It is concluded that sustainable fish farming is possible in Denmark, but with the present technology production will have to be significantly reduced.


1995 ◽  
Vol 31 (10) ◽  
pp. 61-71 ◽  
Author(s):  
M. Enell

During the last 20 years there has been an interesting development of the Nordic fish farming, with regard to the feeding and farming technology and to the increase in production quantities. During the period 1974-1994 the production increased from 15,800 to about 250,000 tonnes/year. In 1974 the major part of the production was in Denmark, and in 1994 the major part was in Norway. The nutrient impact of fish farming on surrounding sea areas is mainly a function of the feed coefficient, the feed composition and metabolic processes in the fish. The comprehensive development of the feed composition and the feeding technology has resulted in reduced load of unmetabolized nutrients from fish farms, calculated per tonne fish produced. In 1974 the mean Nordic feed coefficient was 2.08 and in 1994 the coefficient was 1.25. Feed coefficients of 1.0-1.1 are now reported for Danish and Norwegian freshwater and marine fish farms. The nitrogen (N) and phosphorus (P) content of the feed has decreased, in addition the quality of the nutrient substances in the feed has changed, especially for N. The N content has decreased from 7.8 to 6.8% during the period 1974-1994 and the content of P has decreased from 1.7 to 0.7% during the same period. This development of the feed coefficient and the feed composition has resulted in a present load from a typical Nordic fish farm of 55 kg N and 4.8 kg P/t fish produced. The figures for 1974 were 132 kg N and 31 kg P/t fish produced. The Nordic fish farming production in 1994 resulted in a load of about 13,750 t N and about 1,200 t P on the actual recipients. The load from the Swedish, Finnish and Danish fish farming operations, with the Baltic Sea and the Skagerrak as the recipients, is negligible in comparison with other pollution sources. The quantities of N and P from the fish farming are equal to 0.5% of the atmospheric deposition on the sea surface and 3% of the atmospheric P load. Norwegian, Icelandic and the Faroe Islands fish farming operations are using the North Sea and the Norwegian Sea as the recipients. However, the nutrient load from single fish farms in certain coastal and inland water bodies can be significant and must be considered in the impact assessment together with other sources.


2012 ◽  
Vol 2 (4) ◽  
pp. 431-440 ◽  
Author(s):  
Melissa A. Clark ◽  
Michelle L. Rogers ◽  
Julie Boergers ◽  
Christopher W. Kahler ◽  
Susan Ramsey ◽  
...  

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