Field measurements and numerical modelling of the shallow coastal waters offshore in south-western Australia were used to describe changes in the water column's vertical structure and the biological response on temporal scales of the order of hours and days. A cycle of chlorophyll a concentration, primary production, and photosystem II function on a diel timescale, which was related to changes in the solar irradiance and thermal structure, was identified. The diel cycle included (1) vertically well-mixed (or weakly linear) conditions in density and chlorophyll a early in the morning, resulting from vertical mixing through penetrative overnight convection; (2) depleted chlorophyll a concentration in the surface layer during the middle of the day due to photoinhibition; (3) an increased chlorophyll a concentration in the bottom layer by late afternoon due to optimum light conditions; and (4) the formation of a chlorophyll a break point (CBP) at the thermocline, which migrated downwards with the deepening surface mixed layer. On a longer timescale (days), moored acoustic instruments were used to derive echo level (EL), which approximated suspended particulate matter (SPM). Wind events ultimately controlled SPM, a conclusion based on (1) elevated EL during high windgenerated turbulence and bed shear stress, (2) positive time-lagged correlations between wind speed and EL at three field sites with different exposures to wave action, and (3) significant negative correlations between wind speed and depth-differentiated echo level (d(EL)/dz) at all sites. Sea breezes produced a similar response in EL through the water column to a small storm event, and wind-driven SPM resuspension resulted in a reduction in the sub-surface light climate (kd). Near-bed dissolved oxygen concentrations varied in accord with elevated wind speeds, EL and kd, highlighting a possible suppression of photosynthesis. One-dimensional modelling revealed that wind stirring was most often the dominant process in these waters. It was found that for a brief period during thermal stratification there was shear production of turbulent instabilities that migrated from the thermocline to the surface and the seabed. Convective cooling was not able to mix the water column entirely overnight without the addition of wind, and minimum wind speeds were determined for this complete vertical mixing. Bottom-generated turbulence was limited to a small region above the bed, and was deemed insignificant compared with mixing generated at the surface. Minimum wind speeds required for de-stratification and prevention of stratification were determined for summer, autumn and winter. A hypothetical desalination outfall was simulated for all seasons and it was concluded that positioning of the discharge at middepth was preferable compared to at the seabed. The results of this thesis advance the current knowledge of coastal biophysical oceanography and provide new insights into the temporal dynamics of the coastal water column of south-western Australia.

[Truncated abstract] Currently, Alcoa World Alumina Australia (Alcoa) mines and undertakes procedures to rehabilitate approximately 550 ha of jarrah forest each year at two open-cut bauxite mines in South-West Western Australia. Alcoa aims to establish a self-sustaining jarrah forest ecosystem that maintains the functions of the landscape prior to mining, including biodiversity, on areas that have been mined for bauxite. Indigenous terrestrial orchids form a significant proportion of the indigenous geophytic plant species that either fail to colonise rehabilitated areas or do so very slowly. Terrestrial orchids are considered to be particularly sensitive to competition from weeds and disturbance, which combined with the obligate nature of the orchid-mycorrhizal fungus association suggests that orchids would colonise rehabilitation areas only when both microhabitat sites and soil microflora have established. Occurrence of certain orchids may therefore be expected to be useful as indicators of ecosystem health, the success of vegetation establishment and the recovery of edaphic conditions suitable for orchid mycorrhizal fungi. Vegetation surveys were undertaken to compare orchid species richness and population size of a chrono-sequence of rehabilitation areas with adjacent unmined forest. ... Orchid taxa present in each vegetation assemblage were generally not exclusive to these assemblages, with the following broad exclusions: D. bracteata was found only in species assemblages associated with rehabilitation areas; and Eriochilus sp. and T. crinita were found only in species assemblages associated with unmined forest. No single orchid species appears to be an indicator of ecosystem recovery. However, the presence of populations of C. flava, P. sp. crinkled leaf (G.J.Keighery 13426) or P. recurva in combination with the absence of the disturbance opportunist orchid taxa D. bracteata and M. media appears to be a measure of the maturity of the rehabilitation vegetation. Orchid species richness and clonal orchid population size were correlated with changes in vegetation structure, but apart from the absence of orchids in 1 year old rehabilitation areas, these orchid population characteristics did not show any direct relationship with rehabilitation age or vegetation maturity. Only two orchid taxa appeared to have potential as indicators of vegetation characteristics: T. crinita as an indicator of undisturbed jarrah forest; and D. bracteata as an indicator of disturbed ecosystems. The results of this study suggest that most jarrah forest orchid taxa will readily colonise the post bauxite mining landscape, but that the unassisted colonisation by recalcitrant orchid taxa may be a prolonged process. It is recommended that field-based transplantation and/or seeding trials be undertaken with these recalcitrant taxa to determine if these procedures will enhance recruitment. The results of this work have applications not only in the management of post-mining landscapes but also in vegetation monitoring and conservation work in Western Australia and elsewhere.

[Truncated abstract] In an era of emerging and resurging infectious diseases, understanding the ecological processes that influence pathogen activity and the influences of anthropogenic change to those are critical. Ross River virus (RRV, Togoviridae: Alphavirus) is a mosquito-borne zoonosis occurring in Australia with a significant human disease burden. In the southwest of Western Australia (WA) RRV is principally vectored by Aedes camptorhynchus Thomson (Diptera: Culicidae), which is halophilic. The inland southwest, the Wheatbelt region, of WA is substantially affected by an anthropogenic salinisation of agricultural land called dryland salinity, which threatens to influence transmission of this arbovirus. This study assessed the ecological impacts of dryland salinity on mosquitoes, mammalian hosts and their interactions to influence the potential for RRV transmission. Many aquatic insect taxa colonise ephemeral water bodies directly as adults or by oviposition. Using a manipulative experiment and sampling from ephemeral water bodies in the Wheatbelt, I demonstrated that salinity of water bodies can modify colonisation behaviour and the distribution of some organisms across the landscape. Halosensitive fauna selected less saline mesocosms for oviposition and colonisation. In particular, Culex australicus Dobrotworksy and Drummond and Anopheles annulipes Giles (Diptera: Culicidae), potential competitors with Ae. camptorhynchus, avoided ovipostion in saline mesocosms and water bodies in the field. This finding suggests salinity influences behaviour and may reduce interspecific interactions between these taxa and Ae. camptorhynchus at higher salinities. Using extensive field surveys of ephemeral water bodies in the Wheatbelt I found mosquitoes frequently colonised ephemeral water bodies, responded positively to rainfall, and populated smaller water bodies more densely than larger water bodies. The habitat characteristics of ephemeral water bodies changed in association with salinity. Consequently there were both direct and indirect associations between salinity and colonising mosquitoes. Ultimately the structure of mosquito assemblages changed with increasing salinity, favouring an increased regional distribution and abundance of Ae. camptorhynchus. The direct implication of this result is secondary salinisation has enhanced the vectorial potential for RRV transmission in the WA Wheatbelt. ... This thesis contributes to an emerging body of research aimed at delineating important ecological processes which determine transmission of infections disease. Collectively the findings in this study suggest dryland salinity enhances the potential for RRV activity in the Wheatbelt. Currently, human RRV notifications in the Wheatbelt do not reflect the salinity-RRV transmission potential in that area, but appear to be associated with dispersal of RRV from the enzootic coastal zone of southwest WA. I speculate dryland salinity is a determinant of potential for RRV transmission, but not activity. Dryland salinity is predicted to undergo a two to four fold expansion by 2050, which will increase the regional potential for RRV activity. Preservation and restoration of freshwater ecosystems may ameliorate the potential for transmission of RRV and, possibly, human disease incidence.

Abstract (from thesis text) From Upper Volta to Burkina Faso, is the study of the politics of reaction and reform in a post-colonial nation-state of Burkina Faso. Since its independence from France on 5 August 1960 to 15 October 1987, Burkina Faso, the "land of the upright" people, has experience five changes in government. All of the coups that took place in this twenty-seven year period were reactionary and reforming. However, the most memorable reforms arrived after the coup of 4 August 1983 which gave rise to a youthful president in a thirty-three year old Captain Thomas Sankara. As the leaders before him, Sankara reacted against a post-colonial government that he and supporters saw as inadequate. Unlike the previous coups in the Upper Volta, this work argues that the 4 August 1983 coup brought class consciousness to the forefront. It aimed to establish its identity by changing the country's name from the colonial name of Upper Volta to Burkina Faso. The revolutionaries appeared to be g6enuine in meeting their words with action by working to create self-sufficient citizens, curb environmental depredation, combat corruption in government and provide women more opportunities. Though the Revolution in Burkina Faso (1983-1987) did not end the country's ambitions for a multi-party democracy, it did elevate the status of women, literacy, mortality and pride for the homeland.

Thesis (MTech. degree in Nature Conservation)--Tshwane University of Technology, 2011. / The study was conducted on the Botsalano Game Reserve with the support of the North West Tourism and Parks Agency. No formal management plan is available for the game reserve and therefore the need for an ecological management plan and guidelines for the formulation of a vegetation monitoring plan constituted the basis of the study. The objectives of the study were: 1. To classify and map the plant communities of the Botsalano Game Reserve; 2. To provide quantitative data, collected during a formal vegetation classification, for use by the reserve management in terms of current vegetation condition; 3. To ascertain whether a classification of the vegetation on the BGR could be used for the objective placement of vegetation monitoring sites. Monitoring site placement will be based on representation of plant communities, reflecting community and topographical unit utilization and thus stocking rates based on management decisions.

This thesis will study the development of the Palestinian women's movement in the West Bank and Gaza Strip from the Mandate period (1920) to the outbreak of the Al Aqsa Intifada (2000). This work will attempt to outline the evolution of this movement and the impact of two factors that have significantly affected the form and course of its development; the first of which and the principal force is Palestinian Nationalism; the second is Islamism. / Nationalism and Islamism are presented here as two formations that functioned separately and in conjunction to present impediments to the ability of an independent Palestinian women's movement to develop and implement a social feminist agenda aimed at establishing gender equality and ensuring women's legal and political rights within Palestinian society.

This thesis explores visual representations of British West Indian sugar in relation to the African slave trade practiced during the seventeenth and eighteenth centuries. During this time, sugar played a vital role to the lives of both European and non-Europeans as it was a source of great wealth for many and became transformed into one of the most demanded and widely consumed commodity. From the earliest days of British colonization, the cultivation and production of sugar in the Caribbean has been inextricably linked with the trade in African slaves to provide free labor for plantation owners and planters. This thesis considers how European artists visually represented sugar in its various forms---as an object for botanical study, as landscape and as consumable commodity---and in so doing, constructed specific ideas about the African slave body and the use of African slave labor that reflected personal and imperial agendas and ideologies.

The main objective of the study was to investigate the causes underlining small-farmers default on bank loan repayments in the North West Province. One hundred and sixty farmers were randomly selected to be part of the sample. Questionnaires were issued to both farmers and bank officials. Descriptive statistics, correlation and regression models were used to analyse the data. The overall results indicate that most of the small farmers are in the old age category (58 years on average) with very low educational level. This scenario poses a challenge to the stakeholders in agriculture specifically the succession plan to these elderly people when they leave agriculture due to retirement. It was revealed by the study that the farmers do not keep either financial or production records. The analysis shows that the small farmers lack skills in financial management therefore, they are unable to execute the prerequisite to modern farming which are literacy and numeracy as indicated by Woohall et. al.,( 1985). Most of the respondents have outstanding debt from Agribank yet they received loans from Landbank. Because of their low production and other many responsibilities, they are unable to repay loan instalments thus leading to loan default to their current financial supplier, which is Landbank. Lack of monitoring of loan funds was identified as one of the causes of the farmers Joan default. The analysis also indicates that the small farmers have access to finance but the major problem is lack of financial management skills, more involvement in household responsibilities, and lack of technical assistance from relevant stakeholders like extension officers and project managers from the bank or from the Department of Agriculture. Since the Land bank have no field officers to assist the farmers, it is recommended that the bank should have field officers to assist farmers in their business, especially with production, marketing, financial management and farm management Skills. The inability of the farmers to access good value markets for their products was identified as one of the problems, which led to loan default because the farmers are unable to market their products at the right time for good value in excess of their cost. It is recommended that financial institutions should assist their clients to access better markets for their products for better price which will in turn give them better income in order to repay their loans. / M.Sc. (Agric. Economics) North-West University, Mafikeng Campus, 2005

The research aimed at assessing the extent to which the provincial Government's development programmes are succeeding in reducing regional unemployment. The research focused on the North West Province Central District, which is the second largest of the four districts. It comprises of 5 Municipalities of Mafikeng, Ditsobotla, Setlakgobi, Tswaing and Zeerust. The objectives of the research were to determine: Assess the extent of unemployment. poverty and development status of each of the municipal areas falling within the central region. To assess the prevalence of unemployment in the study area with a specific focus on providing analysis of socio-economic development trends. To development programmes aimed at eradicating poverty in the province especially in the Central District. To evaluate the extent to which government development policies programmes and projects are succeeding in curbing the increasing of unemployment and underdevelopment in the region. From the information gathered, the following results or findings were discovered: The challenges of poverty and unemployment cannot be dealt with by the current approach from the provincial government's planning processes, which tend to focus more on smaller projects than large- scales projects. The current level of migration of people from rural to urban areas seems to be a viable option for most people caught in poverty and under-development in the rural areas. Most people have moved out of the central district to look for jobs outside the region. The majority of the funded projects are too small to make any noticeable impact on the major challenges facing the province. The majority of the proposed projects directly initiated by the provincial government have not taken off the ground. / (MBA) North-West University, Mafikeng campus, 2006

<p>The Morokweng impact structure which is located in the North West province of South Africa, has attracted attention as a potential host for Ni-PGE mineralization. Geochemical exploration techniques using hydroxylamine partial extraction were used to determine the nature and source of surface geochemical anomalies known to occur in the overlying aeolian sang regolith. About 40 aeolian samples were taken from an area of about 35 square kilometer, located in the north eastern sector of the Morokweng impact structure. The samples were sieved to various grain size fractions and partially extracted using varying concentration of hydroxylamine hydrochloride at 50&deg / C.</p>