Environmental Systems and Human Impact at Cobrico Crater,South-western Victoria

This study assesses human impact on the landscape around Cobrico, a volcanic crater lake in dairying country in south-western Victoria. It compares the last 150 years of impact of European settlement against approximately the previous 1500 years of prehistoric occupation and land use. Focus is on vegetation dynamics, erosion, productivity changes and the fire regime. Since European settlement there has been woodland clearance and recovery, the introduction of many plant and animal species and a significant increase in the intensity in the fire regime. While many direct linkages are apparent between environmental variables some operate over significant time lags. Fire has played a major role in vegetation dynamics and has favoured open ground taxa at the expense of Eucalyptus and Melaleuca. While major fires do not always lead to erosion in the catchment it is clear that some changes in the chemistry of erosion products have resulted, with potassium and iron showing increases in the historic period.     

The ‘rhinofication’ of South African security

The rhino‐poaching crisis in South Africa raises questions about whether it should be tackled through judicial processes or by the application of hard‐power methods. The poaching of wildlife has traditionally been met with a harsh response to send a clear message of punitive deterrence. While the reaction of the South African authorities has been no different, the contemporary threat posed by poaching intersects with, and is complicated by, wider concerns such as border security and immigration. In many respects, this has led to what can be termed the ‘rhinofication’ of South African security. South Africa has a long political tradition that relies on force rather than dialogue, negotiation and reform. Yet, the hard‐power response to protect the rhino and other large fauna, though necessary at one level, often runs up against the economic frustrations and temptations of a large, predominantly black, under‐class, which for generations has been excluded from wildlife management and conservation by white ‘exceptionalism’. Poachers are thus transformed through their counter‐cultural actions into what Eric Hobsbawm termed ‘social bandits’. While this social chasm lies at the heart of the ‘rhino wars’, it is clear that in practical terms the lack of a political/poaching settlement in the form of a racially inclusive conservation strategy almost certainly guarantees their continuation.     

SHAPE MEMORY ALLOYS IN SEISMIC RESISTANT DESIGN AND RETROFIT: A CRITICAL REVIEW OF THEIR POTENTIAL AND LIMITATIONS

Shape memory alloys (SMAs) are a class of materials that have unique properties, including Young's modulus-temperature relations, shape memory effects, superelastic effects, and high damping characteristics. These unique properties, which have led to numerous applications in the biomedical and aerospace industries, are currently being evaluated for applications in the area of seismic resistant design and retrofit. This paper provides a critical review of the state-of-the-art in the use of shape memory alloys for applications in seismic resistant design. The paper reviews the general characteristics of shape memory alloys and highlights the factors affecting their properties. A review of current studies show that the superelastic and high-damping characteristics of SMAs result in applications in bridges and buildings that show significant promise. The barriers to the expanded use of SMAs include the high cost, lack of clear understanding of thermo-mechanical processing, dependency of properties on temperature, and difficulty in machining.     

A missed opportunity? New Labour's European policy 1997–2005

When Tony Blair took office in 1997, he was seen as the most pro-European prime minister since Edward Heath and New Labour was seen as committed to the EU. Yet the record on Europe remains mixed. In its first term the government began to play a more constructive role in European integration than its Conservative predecessors had done. Blair agreed to the Treaty of Amsterdam, made the Franco-British St Malo Declaration with President Chirac of France and launched a 'step change' initiative on the UK's relations within the EU, notably predicated on enhanced bilateral relations with other member states. Blair was also deeply committed to the Atlantic alliance, arguing that the UK could be a bridge between the US and Europe. This suggestion was tested to the utmost during the Iraq war, when Atlanticism seemed to prevail. By 2005, Blair was working with a range of colleagues from across the EU, demonstrating his continued commitment. However, New Labour, fearful of the Eurosceptic press and public in the UK, failed to win the voters over to the European cause: after eight years in office, the government has still not held the long-promised referendum on entry into the Euro.     

The outsiders: the European neighbourhood policy

In May 2004, the European Union acquired not just ten new member states but several new neighbours. At about the same time, it began to flesh out a European Neighbourhood Policy (ENP) to bring some order to the EU's relations with its old and new neighbours and to ensure that the newly enlarged EU would be surrounded by a 'ring of friends'. The ENP is also supposed to stave off further enlargement to eastern Europe. However, several problems with the ENP are evident. It requires much of the neighbours and offers only vague incentives in return, making it unlikely that the ENP can meet its core objectives. Furthermore, the ENP is ambiguous about where the EU's borders will end, and it is already apparent that such ambiguity is not helping to foster reform in eastern Europe. Either the EU should say 'no' to further enlargement, so the ENP becomes the framework for relations with the neighbour for the foreseeable future, or it should say 'yes' to eventually letting in a specified number of neighbours which then move out of the ENP.     

Perspectives on an Invasion of Paradise: Rhizophora stylosa on Moorea,French Polynesia

The mangrove Rhizophora stylosa is believed to have been introduced to Moorea, French Polynesia, in about 1946, and has since spread to form dense single-species forests in former saltmarsh and lagoon fringing shrubland. Although it is having a significant ecological impact, it is possible to see this biological invasion as being of ecological benefit. There is even some evidence to suggest it may in fact represent a reintroduction (or even survival) of a native taxon. Some general issues arising from this local example are discussed.