Climate change is likely to have substantial effects on irrigated agriculture. Extreme climate events such as droughts are likely to become more common. These patterns are evident in median projections of climate change for the Murray–Darling Basin in Australia. Understanding climate change...

The precautionary principle has been proposed as a basis making decisions about environmental health under conditions of uncertainty, but remains controversial. This paper shows how the precautionary principle may be interpreted as a guide to decision making in complex systems characterised by...

This note is a demonstration that, in the presence of overlapping generations and under standard conditions for a social welfare ordering (Pareto optimality, transitivity, independence), the only ordering consistent with utilitarianism for all people currently alive at any given point in time is...

In this paper, we consider the relationship between supermodularity and risk aversion. We show that supermodularity of the certainty equivalent implies that the certainty equivalent of any random variable is less than its mean. We also derive conditions under which supermodularity of the...

The effects of global climate change on agriculture will be diverse and complex. Some important qualitative conclusions emerge from the literature. First, it is important to focus on the rate at which climate changes and the capacity of farmers to adjust, rather than on absolute changes in...

The construction of the Snowy Mountains Hydro-electric Scheme in the 1960s resulted in the diversion of 99% of the Snowy River's natural flow into the Murray and Murrumbidgee river systems. In 2000, the NSW, Victorian and Commonwealth governments agreed to restore between 21 per cent and 28 per...

Large scale forest plantations in the Murray-Darling Basin may be embraced as a carbon sequestration mechanism under a Carbon Pollution Reduction Scheme. However, increased tree plantation will be associated with reduced inflows to river systems because of increased transpiration, interception...

In many resource management problems, the starting point is one involving a large number of users with imprecisely defined rights and an aggregate rate of resource use that is environmentally unsustainable. One possible policy response is to make formal or informal contracts with users, under...

In this article, it is shown that a wide range of comparative statics results from expected utility theory can be extended to generalized expected utility models using the tools of supermodularity theory. In particular, a range of concepts of decreasing absolute risk aversion may be formulated...

The relative merits of different property right systems to allocate water among different extractive uses where variability of supply is important are evaluated. Three systems of property rights are considered. In the first, variable supply is dealt with through the use of water rights defined...