Targeting Environmental Water from Irrigators in the Murray Darling Basin

The extended dry conditions in the Murray Darling Basin have resulted in unprecedented levels of reduced water availability for both irrigators and the environment. Concerns over environmental degradation and the health of the river Murray have prompted the Federal and State Governments to cooperate in a range of environmental water restoration programs, including environmental water purchases. These programs have been subjected to varying levels of criticism as to the environmental effectiveness and the economic merit in addressing the central problem of over allocation of a spatially distributed multiple use resource. This paper investigates the economic-environmental tradeoffs under the assumption of unrestricted trade in the Basin. Using a bio-economic model of the Murray Darling Basin we will investigate the opportunity costs of not allowing unrestricted trade, and then consider alternative Environmental Water Allocations (EWAs) to environmental Icon Sites. The model suggests that if unrestricted trade was implemented across the Basin, there would be potential for massive water savings compared to the current long term average cap, and benefits to trade in the order of $96 million. The model also suggests that, under unrestricted trade, the provision of large EWA’s will lead to large reductions in water use (40 percent), however the relative reduction in agricultural value will be much less (12 percent). This brings to question the current objective of the government buybacks as a transition to the Water Act 2009 Sustainable Diversions while allowing State enforced barriers to trade.Murray Darling Basin, water, environmental flows

An overview of selected orthodontic treatment need indices

Orthodontics is a fast developing science as well as the field of medicine in general. The attempt of this book is to propose new possibilities and new ways of thinking about Orthodontics beside the ones presented in established and outstanding publications available elsewhere. Some of the presented chapters transmit basic information, other clinical experiences and further offer even a window to the future. In the hands of the reader this book could provide an useful tool for the exploration of the application of information, knowledge and belief to some orthodontic topics and questions

Terroir rising? Varietal and quality distinctiveness of Australia’s wine regions

It has been argued that part of the reason Australia was able to contribute to and respond so successfully in the 1990s to the growth in demand for commercial bottled wine was because of its freedom (relative to European producers) to blend wines across the full range of varieties and geographic regions, so as to be able to reproduce year after year a consistent style for each label. Over time, however, that has led some buyers in the ‘Old World’ to believe Australian and other ‘New World’ winemakers do not respect or exploit regional differences in terroir or, worse still, that the ‘New World’ is incapable of making high-quality, regionally distinct wines. This paper examines the changing extent to which Australian wine regions do in fact vary in their choice of winegrape varieties and in the average quality of those winegrapes. In doing so the study provides some new quantitative indexes that may be helpful for other purposes too, such as providing a base for simulating the potential impacts on different regions of climate change and of adaptive responses to it. The study focuses on 30 of Australia’s winegrape regions and on the top 12 red and 10 white winegrape varieties that together accounted in 2006 for all but 7 percent of Australia’s wine. It compares 2006 with 2001, the first year for which price and quantity data were compiled nationally by grape variety for the country’s newly defined Geographical Indication regions.

Assessing national values to protect the health of the Great Barrier Reef

The aim of this study was to estimate the values to protect the health of the Great Barrier Reef (GBR) at the national level and to examine the effects of distance decay on valuation estimates. A split-sample choice-modelling experiment was conducted in six locations: a regional town within the GBR catchment area (Townsville); Brisbane, the state capital approximately 450 km from the southern limit of the GBR; and four other capital cities (Sydney, Melbourne, Adelaide and Perth) ranging from nearly 1,000 km to over 4,000 km from Brisbane. The results suggest that the average WTP across Australian households is $21.68 per household per annum for five years. There was some evidence of distance decay in values. Most decline occurred once outside the home state, and little further decline once away from the east coast. There was no evidence to suggest any difference in patterns of use and non-use values. The values of the potential future users were most influential in determining WTP estimates.Distance decay, Iconic resources, Choice modelling experiment, Environmental Economics and Policy, Q51, Q57,

Agriculture and Agricultural Policies in China and India Post-Uruguay Round

Both India and China, as participants in the Uruguay Round, have had the Agreement on Agriculture (URAA) before them as they continued to reform their agricultural and trade policies over recent years. China did not join the WTO until December 2001, but it has nonetheless been undertaking reforms and has entered into substantial commitments to further reform its farm sector by end-2004, when all other countriesÂ’ UR commitments are due to be fully implemented. This paper reviews the progress expected to be made over the ten years since 1995 in these two populous developing countries. It summarizes their structural adjustments to production and trade as a consequence of their (and othersÂ’) economic growth and policy changes, before focusing on the nature and extent of the agricultural and other policy reforms themselves. It concludes by drawing out the implications of these developments for the roles these countries might play in international agricultural markets and in the agricultural negotiations of the Doha Round.

Climate change, mitigation and adaptation: the case of the Murray–Darling Basin in Australia

Climate change is likely to have substantial effects on irrigated agriculture. It is anticipated that many areas that are already dry will become drier, while areas that already receive high rainfall may experience further increases. Extreme climate events such as droughts are likely to become more common. These patterns are evident in projections of climate change for the Murray–Darling Basin in Australia. To understand the effects of climate change, as modified by mitigation and adaptation, active management responses designed to improve returns in particular states of nature, such as in the case of drought must be considered. A change in the frequency of drought will induce a change in the allocation of land and water between productive activities. Even with action to stabilize atmospheric concentrations of CO2 at or near current levels, climate change will continue for some decades and adaptation will therefore be necessary. Conversely, most adaptation strategies are feasible only if the rate and extent of climate change is limited by mitigation. In this paper, a simulation model of state-contingent production is used to analyze these issues.Irrigation, Uncertainty, Climate Change

Terroir Rising? Varietal and Quality Distinctiveness of AustraliaÂ’s Wine Regions

Australia‘s export-led growth in demand for commercial bottled wine was based in part on producer freedom (relative to Europeans) to blend wines across the full range of varieties and geographic regions, so as to be able to reproduce year after year a consistent style for each label. Over time, however, that has led some buyers in the Old World‘ to believe Australian wine makers do not respect or exploit regional differences in terroir or, worse still, that Australia is incapable of making high-quality, regionally distinct wines. This paper examines empirically the changing extent to which Australian wine regions do in fact vary in their choice of wine grape varieties and in the average quality of those wine grapes. Its new new quantitative indexes may also provide a base for simulating the potential impacts on different regions of climate change and of adaptive responses to it. The study focuses on 30 of Australia‘s wine grape regions and on the top 12 red and 10 white wine grape varieties that together account for all but 6 or 7 percent of Australia‘s wine grape crush.wine economics, terroir, regional winegrape quality