Irrigation is central to the functioning of the southern Alberta economy. Irrigation also uses a significant amount of what is expected to be an increasingly scarce resource: water. The Alberta government is embarking on a long-term water management strategy in which irrigation water management will be pivotal. The government is considering a range of economic instruments to assist in this management. One instrument already implemented is the ability of private irrigators and irrigators within irrigation districts to trade irrigation water rights on a temporary and permanent basis. This has established the foundation for water markets. The research presented in this thesis centers on establishing the characteristics of irrigation water markets in southern Alberta. The research also aims to determine whether the markets are behaving according to basic economic principles and whether they are supporting government's goals of increased water productivity, efficiency and conservation. The findings reveal that characteristics of irrigation water markets in southern Alberta. The research also aims to determine whether the markets are behaving according to basic economic principles and whether they are supporting government's goals of increased water productivity, efficiency and conservation. The findings reveal that characteristics of water markets in southern Alberta are very similar to markets elsewhere and the markets are behaving in a manner one would expect. However, markets are also creating activity that at one and the same time support and contradict government's water management goals. In addition, the small degree of market activity in general suggests that if government is relying on markets to contribute to these goals to any significant extent, it will need to create conditions that promote greater water market activity. / x, 184 leaves : ill., maps ; 29 cm.

This research is a study of traditional and modern architecture and how the aforementioned systems can and should integrate into Afro-centric architecture. The emphasis was on the architecture one tends to enjoy as an African, explored and juxtaposed against the thoughts and theoretical frameworks of culture sensitive architects worldwide. In this dissertation, the aspects of integrative theory were explored. Primary theories dealing with sustainability, New African Architecture, Indigenous Knowledge and Semiology were assessed as well. The differences between traditional Africa and modern adaptations, both positive and negative, were the limit of the research. In the dissertation certain key questions are posed to drive the inquiry of the document. The hypothesis is the conjecture that a connection between modernized architecture and traditional semiotics exists and can be cultivated to flourish, developing African architecture at all levels. This conjecture acts as a base for primary and secondary research. There are accounts listed in this dissertation of richly meaningful and sensitive traditional architecture that show a connection between American, Asian, African and European primitive building styles. These accounts show practices that have lasted near as long as the society that invented them. The gathered information shows that these examples have undergone little change over the years. The dissertation argues that the value these instances of traditional architectural meaning lessened over the years due to a shift in cultural paradigms. Further chapters in the study address cosmology, African attitudes to space, the reinvention of old materials and the manifestation and celebration of new tectonic relationships. Lessons collected on the above listed issues were related against findings from verbal interviews, written questionnaires and observations at the site of case studies. It is the researcher’s desire to explore the potential for an integrative developmental institute. To this end, an assessment has been done both in the form of precedent embedded in the text and Case Studies of relevant buildings that relate to the subject matter of the dissertation. The analysis of these assessments shows a manifested potential for the integration of traditional designs with modern building. / Thesis (M.Arch.)-University of KwaZulu-Natal, Durban, 2011.

No description available.

Although sleep forms an important part of an animal’s life, there is a paucity of knowledge about sleep behaviour. The function of sleep in birds is poorly understood, even though birds spend a large part of their lives sleeping. Sleep behaviour in passerine birds has not been looked at as extensively as that of non-passerine birds. I looked at the sleep behaviour of three relatively common passerine birds occurring in southern Africa, namely the Malachite Sunbird (Nectarinia famosa), the Cape White-eye (Zosterops pallidus) and the Fan-tailed Widowbird (Euplectes axillaris). By using an infra-red sensitive camera I described basic sleep behaviours at various ambient temperatures, of all three species, such as sleep position and eye closure, and also investigated the incidence of unihemispheric sleep. Individuals of all three species spent most of the night asleep and kept on waking up intermittently throughout the night, with no significant differences between temperatures. Cape White-eyes and Malachite Sunbirds showed an increase in back sleep and a decrease in front sleep at 5oC. Little evidence of unihemispheric sleep was found, suggesting that it is more likely to occur in non-passerines, especially ground dwelling birds. Diurnal birds generally sleep during the hours of darkness. Most male southern African sunbirds have pectoral tufts, although the function of these is not always understood. In male Malachite Sunbirds it has recently been found that they display their pectoral tufts almost continuously throughout the night, whilst asleep. I explored the possible function of this behaviour and suggest that these tufts might be a deterrent to predators, as they look like ‘eyes’ in the dark. A review of the use and occurrence of pectoral tufts in southern African sunbird species is also presented. Blood glucose concentrations of most birds are much higher than those found in mammals and it is still not known how they evade the complications of such high levels. I investigated the change in blood glucose concentrations of Malachite Sunbirds at two different ambient temperatures and at different times of the night and day and explored the possibility that gluconeogenesis might be used by birds to ‘warm up’ during arousal of torpor in the early morning, before daylight. Generally blood glucose levels were fairly high, between 13.6 and 21.4 mmol/L, which was expected. Blood glucose levels were higher at 5oC than at 25oC and generally lower in the early hours of the morning. Therefore I reject the assumption that Malachite Sunbirds use gluconeogenesis as an additional form of heat generation during torpor. It is thought that the difference in the levels of blood glucose might be a function of the cold temperature and the consumption of their nectarivorous diet. This research clearly highlights the need for further studies to be undertaken in the sleeping behaviours and patterns of birds, especially in southern African species. It also shows that more studies need to be done on the use of pectoral tufts in sunbird species and furthermore it is suggested that more research is needed to elucidate the mechanism by which Malachite Sunbirds are able to rapidly ‘warm up’ during arousal, when in torpor. / Thesis (M.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2007.

[Truncated abstract] Dryland salinity is a major environmental challenge facing agriculture in Australia. One option to manage dryland salinity is the use of perennial forages that increase water use of agricultural systems. However, the current array of perennial forages is limited. Forage species that satisfy the range of climatic and edaphic environments, and production systems, in southern Australia are needed (Chapter 1). In particular, low rainfall regions lack options other than lucerne (Medicago sativa L.) (Chapter 1). The Dorycnium genus (canary clovers) contains perennial species that might be useful forage plants for southern Australia. Dorycnium are sub-shrubs and their plant form differs from current perennial forages (Chapter 1). The aim of this project was to investigate some of the agronomic traits of several species of the genus Dorycnium to explore where they might be used in Australia and how they might be integrated into agricultural systems for management of dryland salinity. First, two desktop investigations assessed the potential adaptation and role of Dorycnium species in southern Australia: a review of the current literature on the agronomic characteristics of Dorycnium (Chapter 2) and an eco-geographical analysis to explore the ecology of Dorycnium species (Chapter 3). The agronomy of Dorycnium has been previously researched mainly in New Zealand, and although this provides some indications on where and how Dorycnium might be best used in Australia, this still requires testing in Australia. In particular, the aluminium tolerance of Dorycnium species indicates that they may be more suitable for acid soils than lucerne. Little ecological data was obtained for germplasm and herbarium collection sites of Dorycnium species. Climate comparisons between the native distribution of Dorycnium species in the Mediterranean basin and Australia, using spatial aridity data and CLIMEX climate match modelling, revealed that D. hirsutum and D. rectum might be suitably adapted to the temperate pasture regions of southern Australia. Suitable germplasm of D. pentaphyllum may also exist, but subsequent investigations in this project focussed on D. hirsutum and D. rectum.

Thesis (Ph. D.)--University of California, San Diego, 1999. / Vita. Includes bibliographical references (leaves 551-594).

Thesis (Ph. D.)--University of Pittsburgh, 1992. / Includes bibliographical references (leaves 238-248).

Thesis (MS en S)--Stellenbosch University, 2002. / ENGLISH ABSTRACT: More than half of the population of Southern Africa live in rural areas and lead a marginal existence. They are dependant on natural resources that are to their disposal for their survival. The resources that they use are renewable but are currently exploited faster that it can be replaced. The pressure that the rural populations are placing on nature cannot be sustained. The concept of "sustainable development" came into being in 1987. The principle of this new concept was to permit development as to meet the needs of the present without compromising the ability of future generations to meet their own needs. Sustainable development proposes a lifestyle that preserve nature as well as social and cultural characteristics of a community. The tourism industry of Southern Africa has great potential and is still growing. Ecotourism, the idea of nature based tourism that will benefit both the socio-economic circumstances of the community and conservation, have increased in the past ten years. If ecotourism is managed correctly, it can be the answer to poverty in many rural communities and at the same time conserving nature. There are organisations that concentrate on sustainable rural development and that introduce communities to the potentials and benefits of the tourism industry. There are already communities that adopted this new paradigm with great success. The aim of this study is to make people conscious to the problem of rural poverty and the impacts it has had on the environment already. Secondly the study also presents a solution to rural poverty by the development of tourism in rural communities. / AFRIKAANSE OPSOMMING: Meer as die helfte van Suider-Afrika se bevolking leef in landelike gebiede en voer 'n marginale bestaan. Hulle is aangewese op die natuurlike hulpbronne wat tot hulle beskikking is vir hulle voortbestaan. Die hulpbronne is hernubaar maar word tans vinniger verbruik as wat dit vervang word. Die druk wat die arm landelike bevolking op die natuur plaas kan nie volgehou word nie. In 1987 het die begrip "volhoubare ontwikkeling" die lig gesien. Die beginsel van die konsep is om ontwikkeling te laat geskied sodat daar aan die behoeftes van die hede voldoen word sonder om die behoeftes van die toekomstige geslagte te belemmer. Volhoubare ontwikkeling stel 'n lewenswyse voor wat nie net die natuur preserveer nie, maar ook die sosiale en kulturele sy van 'n gemeenskap. Die toerismebedryf in Suider-Afrika het baie potensiaal, en is steeds besig om te groei. Ekotoerisme, die idee van natuur-gebasseerde toerisme wat kan bydra tot die verbetering van sosio-ekonomiese toestande en bewaring van die omgewing, het toegeneem in die laaste tien jaar. Indien ekotoerisme reg bestuur word, kan dit vir 'n groot deel van die landelike bevolking 'n uitkoms tot armoede bied terwyl die natuur bewaar word. Daar is organisasies wat konsentreer op volhoubare landelike ontwikkeling en wat die gemeenskap bekend stel aan die voordele en potensiaal van die toerismebedryf. Daar het reeds verskeie gemeenskappe betrokke geraak in die toerismebedryf met groot welsae. Hierdie studie is 'n oorsig van bestaande literatuur oor die rol van toerisme en spesifiek, ekotoerisme in volhoubare ontwikkeling in landelike dele.

This study was aimed at understanding how networking can enable or constrain professional development and institutionalisation of environmental education courses in southern Africa in the context of the Course Development Network (CDN), a project of the Southern Africa Development Community Regional Environmental Education Programme (SADC REEP). The study involved 12 institutions (each institution was represented in the CDN by a staff member) in eight SADC member states. It was contextualized through a review of social, political, environmental and educational developments in southern Africa, with specific reference to regionalization processes, as the SADC REEF is constituted under this post-colonial political framework. Relational philosophy informed the research process and methodology. The philosophy underpinned three distinct, yet related theoretical perspectives namely: critical realism, which provided the ontological perspectives of the study; Actor Network Theory; and Community of Practice, which provided the epistemological perspectives. Data was generated during a 33-month period in southern Africa and 12 months in the United Kingdom (and on a one week visit to Italy). During a 12 month Split Site Commonwealth Scholarship award, tenable at Manchester Metropolitan University in the United Kingdom, I studied the Environment and School Initiative (ENSI) and the Sustainability Education for European Primary Schools (SEEPS), to examine whether the same mechanisms that made them successful would apply to the CDN in the context of southern Africa. While these two case studies provided useful insight into the relationship between networking, professional development and institutionalization of environmental education programmes, they were not the main focus of the research. Data analysis was mainly through inductive, abductive and retroductive modes of inference. Inductive data analysis was done by means of Nvivo – a computer software package used for qualitative data analysis. The software aided in revealing features and relationships in the data in more depth as it allowed flexibility in working with data. Abduction is the interpretation of a phenomenon by means of a conceptual framework. In this study, I used Actor Network Theory (ANT) (Latour & Woolgar, 1979; Callon, 1986) and Community of Practice (COP) (Lave, 1988; Lave & Wenger, 1991; Fullan, 2003) as analytical conceptual frameworks to probe networking and professional development respectively. Data on institutionalisation of environmental education courses was analysed by means of retroductive mode of inference, which is a thought operation that enables the understanding of social reality beyond what is empirically observable or experienced. This study reveals that there were a number of necessary (internal) and contingent (external) factors that enabled or constrained networking, professional development and institutionalisation of environmental education courses in the context of the CDN. The key factors included existing cultural capital, donor political economy, power relations, poverty related factors and social transformation trends. The study found that relational approaches and the use of three relational theoretical lenses provided a broader lens which enabled this study to identify different dynamics, greater ontological depth and understanding of the relational dynamics and relations at play in the CDN beyond the participants' experience and observable events. The study also contends that networking can provide a support structure for social transformation and change in environmental education.

Despite according high priority to regional economic integration and being clustered by regional economic schemes, Africa’s regional economic integration record is not inspiring. With the transformation of the OAU to the African Union (AU), the New Partnership for Africa`s Development (NEPAD) was adopted as the development program of the continent to drive the impetus of economic integration through trade. At the time NEPAD was adopted, regional integration schemes in Africa were facing problems of low intra-regional trade levels despite trade being identified as the engine of activity and economic growth for regional economic integration. The study was centered on Southern Africa with precise attention on SADC. Even though trade is accepted as a vital engine of economic growth and development, this is not the case with SADC. The study was looking at the contribution of NEPAD in intra-regional trade in Africa with special focus on SADC. This was prompted by the fact that regional integration is business as usual within the sub region while problems that have been confronting regional schemes are continuing unabated after the adoption of NEPAD. The study used the historical approach because it provides the study with an advantage of accessing existing literature with regards to what is really stalling intra-regional trade in SADC. The study findings noted that NEPAD has not fully addressed the problems of intra-regional trade within SADC and the continent at large. The study lastly concludes by giving a way forward for NEPAD to respond to the specific needs of SADC for the promotion of intra-regional and equitable trade.