Open and closed Robertson-Walker-type Lyttleton-Bondi universes

The exterior field of the Robertson-Walker-type metric in the Lyttleton-Bondi universe is studied and exact solutions are obtained for closed and open universes. Only the flat space solution was previously known.     

Mapping of apple orchards using remote sensing techniques in cold desert of Himachal Pradesh,India

The present study was conducted to map Apple orchards in dry alpine Spiti region of Indian Himalaya using LISS III satellite image. The barren terrain with sparse woody vegetation helped in classification of apple orchards with 91.3 % accuracy. The orchards were found in 154.6 ha of the study area and are anticipated to expand owing to its economic importance.     

Are people of Indian origin (PIO) “Indian”? A case study of South Africa

A necessary condition for a migration to be considered as a “diaspora” is the upholding of contacts in the land of origin in various forms, real or imaginary, material or cultural. This paper examines whether this is so in the case of Indian South Africans, most of whose ancestors came to the country as indentured labourers between 1860 and 1911. A key contention was that there could be some cultural and emotional factors partly explaining the economic relations and the geography of flows between the South Africans of Indian origin and India. However, this eventually proved to be wrong. This is all the more paradoxical since the “Indian” identity is still very alive in Durban. However, it is highly fragmented, according to the generations, the religions and the socio-economic classes. India is still a key referent, but “transcendentally”: either as a country which has only an abstract existence, which is spoken of, even dreamt of, without ever being visited; or it is visited but considered only as a whole, since the region of one’s ancestors is almost never at the forefront. Furthermore, the vulnerable situation of “Indians” within South African society does not encourage stronger relationships with India.     

Engendering local government in post-apartheid South Africa – Experiences of female councillors in Durban (1996–2000)

This paper examines the participation of women in local government in the Durban Metro Area in the post-apartheid era. The primary purpose is to ascertain the degree of representation of women in local government structures and their influence on decision-making processes. The paper further attempts to determine the gender sensitivity of the male counterparts and their level of collaboration with female councillors. The gendered needs of women in local government and the various problems they experienced in office are highlighted. Finally, strategies to increase the participation of women in local government as well as to eradicate impediments, which they encounter, are advocated. The paper revealed that women have been under-represented in local government. Women who are elected into local government are discriminated against on grounds of gender and often race. They tend to be side-lined and marginalised in decision-making and in positions of power. This revised version was published online in July 2006 with corrections to the Cover Date.     

Economic refugees in post-apartheid South Africa – Assets or liabilities? Implications for progressive migration policies

While South Africa's political transformation has been lauded internationally, one of the greatest challenges facing the post-apartheid democratic government is undocumented immigration. There has been a xenophobic tendency to stigmatise immigrants, particularly those from other African countries as criminals, as people who undermine economic development and take jobs from locals. The aim of this paper is to critically review changing policies towards undocumented migration in post-apartheid South Africa. More specifically, the paper will present a historical context to migration; question whether there are millions of illegal immigrants in South Africa; identify reasons for the increasing influx of migrants into the country; analyse the rise of xenophobia in the Republic; discuss problems associated with migrants; and assess changing immigration policies. The main reason for leaving their home countries was a lack of employment opportunities. Therefore the migrants could be regarded as economic refugees. This revised version was published online in August 2006 with corrections to the Cover Date.     

Review of the causes of the rise of the illegal South African abalone fishery and consequent closure of the rights-based fishery

The rise of organised illegal fishing and trade in abalone from the late 1990s destabilised South Africa’s historically stable, quota-managed fishery, culminating in its closure in 2008. The development of the fishery is described in a historical context, including the evolution of South Africa’s science-based abalone fishery management system. The diverse suite of responses deployed to combat illegal fishing and the black market trade in abalone are reviewed, including;- fishery reform to expand rights to a greater number of previously disadvantaged fishers, a territorial user rights fishery (TURF) system, special compliance operations and courts, the CITES listing of abalone, and the serial reduction in the TAC, culminating in the controversial and legally contested closure of the fishery. The main causes of the rise of the illegal fishery are diagnosed as 1) the massive increase in the abalone price that occurred in the 1990s triggering an abalone fishing “gold-rush” and 2) the failure of the post-Apartheid fishery reform process to accommodate many traditional fishers in a legal fishing rights framework resulting in them operating outside the formal fishery management system. By contextualising the abalone fishery as a complex system, embedded in South Africa’s socio-political setting, we show how the resource focussed fishery management system did not have the capacity to incorporate the powerful social, political and economic drivers determining fisher behaviour. We conclude with the need to revisit South Africa’s abalone fishery management paradigm, and argue that a more integrated governance approach is required that takes into account the biological, socio-political and economic factors determining the fishery activities.     

Current state of knowledge regarding the world’s wetlands and their future under global climate change: a synthesis

Wetlands cover at least 6 % of the Earth’s surface. They play a key role in hydrological and biogeochemical cycles, harbour a large part of the world’s biodiversity, and provide multiple services to humankind. However, pressure in the form of land reclamation, intense resource exploitation, changes in hydrology, and pollution threaten wetlands on all continents. Depending on the region, 30–90 % of the world’s wetlands have already been destroyed or strongly modified in many countries with no sign of abatement. Climate change scenarios predict additional stresses on wetlands, mainly because of changes in hydrology, temperature increases, and a rise in sea level. Yet, intact wetlands play a key role as buffers in the hydrological cycle and as sinks for organic carbon, counteracting the effects of the increase in atmospheric CO₂. Eight chapters comprising this volume of Aquatic Sciences analyze the current ecological situation and the use of the wetlands in major regions of the world in the context of global climate change. This final chapter provides a synthesis of the findings and recommendations for the sustainable use and protection of these important ecosystems.