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Littérature scientifique sur le sujet « Lowveld »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 8 février 2022

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Articles de revues sur le sujet "Lowveld"

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Zambatis, N. « Ferns and flowering plants of Klaserie Private Nature Reserve, eastern Transvaal : an annotated checklist ». Bothalia 24, no 1 (10 octobre 1994) : 37–53. http://dx.doi.org/10.4102/abc.v24i1.751.

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An annotated checklist of the plant taxa of the Klaserie Private Nature Reserve, eastern Transvaal Lowveld, is presented. Of the 618 infrageneric taxa recorded, six are pteridophytes and the remainder angiosperms. Of these, 161 are monocotyledons and 451 dicotyledons. Five of the latter are currently listed in the Red Data List of the Transvaal, two of which are first records for the Transvaal Lowveld. The vegetation of the reserve shows strong affinities with the Savanna Biome, and to a lesser degree, with the Grassland Biome.
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Pretorius, I., et H. Rautenbach. « A Long-term synoptic-scale climate study over Mariepskop, Mpumalanga, South Africa ». Clean Air Journal 22, no 2 (3 décembre 2012) : 2–6. http://dx.doi.org/10.17159/caj/2012/22/2.7076.

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Mariepskop forms part of the northernmost edge of the Drakensberg Mountain range and is known for its complex topography associated with meso-scale atmospheric circulation, and therefore its numerous climatic zones. The mountain hosts a high biodiversity. The peak of Mariepskop lies at approximately 1900m Above Mean Sea Level (AMSL), which is higher than the surrounding escarpment to the east. Its foothills also extend well into the Lowveld at about 700 m AMSL. Mariepskop is therefore ideal for studying airflow exchange between the industrial Highveld and the Lowveld with its diversity of natural resources. It is also ideal for detecting global warming signals on altitudinal gradients extending from the Lowveld to altitudes above the Highveld escarpment. In this study long-term National Centre for Atmospheric Research / National Centre for Environmental Prediction (NCAR/NCEP) wind data at two atmospheric pressure levels (850 and 700 hPa), as well as near-surface temperature data, were obtained for the Mariepskop region for the summer (December-January-February: DJF (1981-2011 )) and winter (June-July-August: JJA (1980-2012)) seasons. The data was used to study synoptic wind flow across the mountain in the upper (700 hPa) and lower (800 hPa) atmosphere, as well as near-surface temperature gradients. During the summer season, east-south-easterly and south-easterly winds were found to be the most prominent. These winds are commonly associated with both continental and ridging anticyclonic conditions. During winter, the predominant wind direction at 850 hPa is south-easterly, which is also due to the influence of ridging anticyclones, while at 700 hPa the dominant winter wind direction becomes west-south-west, which is due to the more frequent eastward passing of cyclonic frontal systems across the Highveld towards the Lowveld. Long-term near-surface temperatures exhibit a weak increasing linear temperature trend for both seasons, which might be due to global warming.
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Scoones, Ian, Blasio Mavedzenge et Felix Murimbarimba. « Sugar, People and Politics in Zimbabwe’s Lowveld ». Journal of Southern African Studies 43, no 3 (15 septembre 2016) : 567–84. http://dx.doi.org/10.1080/03057070.2016.1187972.

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Chingwena, G., S. Mukaratirwa, T. K. Kristensen et M. Chimbari. « Larval trematode infections in freshwater snails from the highveld and lowveld areas of Zimbabwe ». Journal of Helminthology 76, no 4 (décembre 2002) : 283–93. http://dx.doi.org/10.1079/joh2002132.

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AbstractBetween November 1998 and October 2000, freshwater snails were collected monthly from the highveld and lowveld areas of Zimbabwe to determine the occurrence of larval trematodes. A total of 13,789 snails, representing ten species, were collected from 21 sites and 916 (6.6%) harboured patent trematode infections. Eight morphologically distinguishable types of cercariae were identified.Bulinus tropicushad the highest overall prevalence of infection (13.1%). The echinostome was the most common type of cercaria recovered, contributing 38.2% of all infections.Schistosomacercariae were recovered mainly from the highveld and comprised 8.0% of all infections. Amphistome cercariae contributed 37.6% of all infections and were recorded from both the highveld and lowveld areas with a peak prevalence occurring during the post-rainy period (March–May). The main intermediate host for amphistomes wasB. tropicus. Infections inB. globosus,B. forskaliiandBiomphalaria pfeifferiwith amphistome cercariae are new records for Zimbabwe.
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Monadjem, Ara, et April E. Reside. « Breeding Season ofEpomophorus walhbergiin the Lowveld of Swaziland ». African Zoology 47, no 2 (octobre 2012) : 321–25. http://dx.doi.org/10.3377/004.047.0217.

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Monadjem, Ara, et April E. Reside. « Breeding season ofEpomophorus walhbergiin the lowveld of Swaziland ». African Zoology 47, no 2 (avril 2012) : 321–25. http://dx.doi.org/10.1080/15627020.2012.11407552.

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Mason, S. J. « Climatic change over the Lowveld of South Africa ». Climatic Change 32, no 1 (janvier 1996) : 35–54. http://dx.doi.org/10.1007/bf00141277.

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Chamboko, T., A. W. Mukhebi, C. J. O'Callaghan, Trevor F. Peter, R. L. Kruska, G. F. Medley, Suman M. Mahan et B. D. Perry. « La cowdriose et l'économie de la production animale dans les fermes commerciales et traditionnelles au Zimbabwe ». Revue d’élevage et de médecine vétérinaire des pays tropicaux 52, no 3-4 (1 mars 1999) : 313–23. http://dx.doi.org/10.19182/remvt.9680.

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Afin d'évaluer l'impact économique de la cowdriose (infection par Cowdria ruminantium ) et de créer un modèle pour l'impact des vaccins améliorés contre cette maladie, une étude sur le terrain a été conduite pour fournir des données sur les indicateurs de productivité du bétail au Zimbabwe. Des études transversales ont été réalisées dans les deux principales régions agro-écologiques, lowveld et highveld, où la cowdriose est supposée être endémique stable et épidémique, respectivement. Ces études ont été conçues pour fournir des données sur la productivité et la rentabilité du bétail ( des principaux indicateurs de production dans le secteur traditionnel et commercial (pour des entreprises productrices de viande bovine, de lait, d'ovins, de caprins). Les résultats prouvent que la rentabilité des fermes commerciales de viande bovine, comme l'indiquent les marges brutes globalement positives, était identique (p > 0.05), indépendamment de la présence et de la localisation de la cowdriose. Seules les fermes laitières commerciales qui ont enregistré des cas de cowdriose ont montré une marge brute négative, bien que ce ne soit pas sensiblement différent des exploitations laitières qui n'ont pas enregistré de cowdriose ou des fermes de viande bovine. Le secteur traditionnel dans les highveld et lowveld a affiché des marges brutes positives, bien que la marge ait été significativement (p < 0.001) plus élevée dans le highveld que dans le lowveld. Cette étude indique que les pertes associées à la cowdriose sont minimales lorsque la maladie est endémique stable ou épidémique avec un contrôle efficace des tiques. De plus, la rentabilité de la production animale, dans les secteurs commercial et traditionnel, pourrait être améliorée si des méthodes plus rentables pour le contrôle des tiques et des maladies transmises par les tiques (qui représentent un des principaux coûts de production) étaient disponibles.
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PETER, T. F., B. D. PERRY, C. J. O'CALLAGHAN, G. F. MEDLEY, G. MLAMBO, A. F. BARBET et S. M. MAHAN. « Prevalence of Cowdria ruminantium infection in Amblyomma hebraeum ticks from heartwater-endemic areas of Zimbabwe ». Epidemiology and Infection 123, no 2 (octobre 1999) : 309–16. http://dx.doi.org/10.1017/s0950268899002861.

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Analysis of the transmission dynamics of Cowdria ruminantium, the tick-borne rickettsial agent of heartwater in ruminants, requires accurate measures of infection in vector populations. To obtain these, Amblyomma hebraeum ticks were collected at two heartwater-endemic locations in the lowveld and highveld regions of Zimbabwe and assessed for C. ruminantium infection with specific polymerase chain reaction (PCR) and DNA probe detection assays. At the lowveld site, 11·2% (50/446) of adult ticks and 8·5% (23/271) of nymphs carried C. ruminantium, as detected by PCR. At the highveld site, the prevalence of infection in adult ticks was 10·2% (40/392). DNA probe analysis revealed that most infections at both sites were of low intensity; only 9% and 23% of all nymph and adult tick infections, respectively, were greater than 70000 organisms, the detection limit of the DNA probe. However, the majority (70%) of probe- detectable adult tick infections were high, between 107 and 109 organisms/tick, while those within nymphs were lower, between 105 and 106 organisms/tick.
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Makhado, R. A., M. J. Potgieter et D. C. J. Wessels. « Colophospermum mopane wood utilisation in the Lowveld, Limpopo Province ». South African Journal of Botany 74, no 2 (avril 2008) : 371. http://dx.doi.org/10.1016/j.sajb.2008.01.076.

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Thèses sur le sujet "Lowveld"

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Wilder, Benson Michael. « Making new spaces : 'Communities,' chaos and conservation in Zimbabwe's southeast lowveld ». Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1443926.

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Wolmer, William Lewis. « Lowveld landscapes : conservation, development and the wilderness vision in south-eastern Zimbabwe ». Thesis, University of Sussex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366073.

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Landscapes, as well as being physical spaces, are imagined and invested with meaning. The way they are thought about influences what is done to them. Conservation and development programmes in Zimbabwe's south-east 'lowveld' have been rooted in a particular conceptualisation of landscape - as wilderness. This derives from the experiences and priorities of colonial settlers and has had two facets. On the one hand the landscape came to be constituted as one of adventure, mystique and danger - a fearful place that 'pioneers' sought to tame into a productive landscape through cattle ranching or irrigation. On the other hand it has been viewed as a pristine natural landscape that must be preserved, rehabilitated or consciously manufactured. In both these manifestations African people were written out of the landscape. Their uses, perceptions and experiences of this landscape have been ignored in policies deriving from this 'wilderness vision'. Dryland agriculture in the low veld has been regularly dismissed as inappropriate, rather than a key livelihood strategy. Irrigation developments have been biased towards large-scale initiatives in the commercial sector. Livestock management strategies, other than those recommended for commercial ranching, have been discouraged. Wildlife utilisation schemes have delivered minimal returns to communities and imposed coercive regulations on resource use, deepening antagonism over land; but conservation initiatives such as a transfrontier national park are going ahead - bolstered by economic imperatives, global environmental agendas and donor priorities. Land reform has failed to take account of the way the landscape is bound up with identity through its embodiment of ancestral spirits and function as a repository of social memories. The turbulent dynamics around the ongoing farm invasions in Zimbabwe may open space for previously silenced constructions of landscape to influence policy. An awareness of the flexible and multiple nature of livelihood strategies and further debate on the restitution of ancestral lands would go a long way towards improving livelihoods in the lowveld.
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Gray, Jean Mary. « Understanding the farming community sequence from the Mateke Hills, South-East Lowveld, Zimbabwe ». Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/4173.

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Schnurr, Matthew A. « Lowveld cotton : a political ecology of agricultural failure in Natal and Zululand, 1844-1948 ». Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/784.

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This dissertation is a study of agricultural failure. It follows the efforts of settlers, then scientists, to impose cotton as a commodity crop in the eastern region of South Africa, known today as KwaZulu-Natal. Touted as a commodity crop capable of remaking land and life in this region in the 1850s, the 1860s, at the turn of the century, and again in the 1930s, cotton never achieved more than marginal status in the agricultural economy. Its story is one of historical amnesia: although faith in the region’s cotton prospects dipped following each spectacular failure, it was routinely resurrected once previous failures had been accounted for, or memories of them had faded. Two crucial issues are at the centre of this episodic history. First, I explore the enthusiasms that underpinned successive efforts to introduce cotton, the logistics of planned expansion, and the reasons for the repeated collapse of cotton-growing schemes. My primary argument is that cotton failed because colonists lacked the technology to overcome natural constraints to production, in the form of temperature, rainfall, soils and insect pests. Settlers and scientists could not remake the land, the climate, or the cotton plant to meet their needs or realize their dreams. They attempted to overcome obstacles to production through settlement schemes, new agricultural inputs, and breeding technologies, but were unable to conquer the ecological incompatibilities between theoretical ambition and practical cultivation. This dissertation stresses the limits of colonial agriculture when confronted with unsuitable growing conditions. Second, I aim to unravel the side effects of the repeated failures of cotton production in Natal and Zululand. I turn the question of agricultural failure on its head to ask what was achieved through these repeated attempts to develop cotton as a commodity crop. I concentrate on the outcomes of these difficult and disappointing efforts at cotton cultivation – increased settler presence, stronger delineation between settler and African space, expanded state control into rural areas – and argue that, despite repeated failure, cotton facilitated important structural changes to the region’s agricultural, political and economic landscape.
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Gess, David Wolfgang. « Hunting and power : class, race and privilege in the Eastern Cape and the Transvaal Lowveld, c. 1880-1905 ». Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86262.

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Thesis (MA)--Stellenbosch University, 2014.
ENGLISH ABSTRACT: This dissertation examines the identity of hunters, sportsmen and their associated communities in two diverse regions of southern Africa during the last two decades of the nineteenth and the first decade of the twentieth centuries. It argues that this was a critical period during which new patterns of hunting and local tradition were created. In the eastern Cape districts of Albany, Fort Beaufort and Bathurst kudu and buffalo were hunted pursuant to permits granted in terms of the Game Act, 1886. An analysis of the identity of those to whom these permits were granted or refused provides insights into power, connection and influence amongst the English-speaking colonial elite of the region who sought to control the right to hunt “royal game”. It also reveals their interaction with civil servants who exercised the power to grant or withhold the privilege. Kudu were transferred from public to private ownership, through a process of “privatization” and “commodification” on enclosed private land, and there preserved for sporting purposes by the local rural gentry. The survival – and even growth – in numbers of kudu in the region was achieved in these private spaces. Buffalo, on the other hand, were hunted into local extinction notwithstanding their protection as “royal game”. In the north-eastern Transvaal Lowveld wild animals in public ownership were hunted by a wide variety of hunters with competing interests. The identity of the “lost” Lowveld hunters, previously hidden from history, including an important but overlooked component of elite recreational hunters from the eastern Cape, is explored as a window into the history of hunting in the region prior to the establishment of game reserves. Both the identity and networks of these hunters and sportsmen are considered in the context of enduring concerns about race, class, gender and the exercise of power.
AFRIKAANSE OPSOMMING: Hierdie tesis ondersoek die identiteit van die jagters, sportmanne en die gepaardgaande gemeenskappe in twee verskillende streke van Suider-Afrika gedurende die laaste twee dekades van die negentiende en die eerste dekade van die twintigste eeu. Dit voer aan dat hierdie 'n kritieke tydperk was waartydens nuwe patrone van jag en plaaslike tradisie geskep is. In die Oos-Kaapse distrikte van Albany, Fort Beaufort en Bathurst is die jag op koedoes en buffels toegelaat op grond van permitte toegestaan in terme van die Wild Wet, 1886. Die ontleding van die identiteit van diegene aan wie hierdie permitte toegestaan of geweier was, bied insae oor die uitoefening van mag, verhoudings en invloed onder die Engelssprekende koloniale elite van die streek, wat probeer het om beheer uit te oefen oor die jag van die “koninklike wild”. Dit openbaar ook hul interaksie met staatsamptenare wat hulle magte gebruik het om permitte uit te ruik of te weerhou. Eienaarskap van koedoes was oorgedra vanaf openbare na privaat besit, deur 'n proses van "privatisering " en "kommodifikasie" op geslote private grond, met die verstandhouding dat dit vir sport – doeleindes deur die plaaslike landelike burger gebruik kon word. Die oorlewing – en selfs groei – in die getal koedoes in die streek is behaal in die private besit. Buffels, aan die ander kant, is tot plaaslike uitwissing gejag ondanks hul beskerming as "koninklike wild". In die Noord-Oos Transvaalse Laeveld is wilde diere in openbare besit gejag deur 'n wye verskeidenheid van jagters met mededingende belange. Die identiteit van die "verlore" Laeveld jagters, voorheen verborge in die geskiedenis, wat 'n belangrike maar oor die hoof verwaarloosde komponent van elite rekreasionele jagters van die Oos-Kaap insluit, word ondersoek as 'n venster op die geskiedenis van jag in die streek voor die totstandkoming van wildreservate. Beide die identiteit en netwerke van hierdie jagters en sportmanne word beskou in die konteks van blywende belangstelling met ras, klas, geslag en die uitoefening van mag.
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Petersen, Leif Michael. « Granivores as ecosystem regulators of woody plant increasers in semi-arid Savannas of the Lowveld, South Africa ». Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8725_1210750329.

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In recent years, a global trend of increasing woody vegetation densities in semi-arid savanna habitats has been recorded, commonly described in South Africa as 'bush encroachment'. The shrubs and trees that do this (Increasers) have wrought significant economic and ecological impacts upon carrying capacities of large areas of savannas. This occurs, as suitable grazing areas are incrementally engulfed in shrubs and trees establishing new equilibria, from open savannas (essentially grasslands with scattered trees) into closed woodlands (treelands with scattered grasses). This thesis demonstrated a link between grass biomass, small mammal abundance and diversity, and their potential increaser seed/seedling predatory activities in the semi-arid Lowveld Savannas of South Africa.

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Thondhlana, T. P. « Metalworkers and smelting precincts : technological reconstructions of second millennium copper production around Phalaborwa, Northern Lowveld of South Africa ». Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1380278/.

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This thesis examines metal production debris with the aim of reconstructing extractive metal technologies employed around Phalaborwa during the second millennium AD. Mining and metallurgy were previously identified as exclusive pulling factors for Iron Age human settlement in this agropastoral marginal area. Several Iron Age settlements with extensive metal production evidence were previously documented. This thesis places emphasis on extractive copper metallurgy previously neglected for several reasons. The early second millennium AD site of Shankare is used as the main case study. Whilst previously excavated metallurgical assemblages from late second millennium AD sites are re-investigated to explore diachronic changes in smelting technologies. The thesis is inspired by contemporary theoretical developments by the Francophone school of thought known as the ‘Anthropology of Technology’. Standard archaeological fieldwork procedures together with post-fieldwork laboratory studies were employed. Separation of copper from iron production debris visually was impossible but a combination of field observations and archaeometric approaches offered the answer. Archaeological ores, slags, technical ceramics and metal artefacts were subjected to optical microscopy, energy dispersive x-ray fluorescence spectrometry (XRF), scanning electron microscopy energy dispersive spectrometry (SEM-EDS). Copper smelting slags differ significantly from iron smelting slags in their chemistry and microstructure. There are subtle differences in copper slags from different archaeological sites. Earlier copper slags are heterogeneous with notable unreacted minerals fragments. Despite these differences both copper and iron slags are linked to the same ore deposit known as the Palabora Igneous Complex. The metallurgical chaînes opératoires employed in the research area are reconstructed. At Shankare copper production is represented by crushed furnace slags and secondary refining ceramic crucibles. Iron slags are confined to dedicated metallurgical middens whereas copper production debris is present at low density scatters and domestic middens. This spatial configuration confirms recent observations by other archaeologists in Southern Africa. The archaeological and analytical results permit preliminary discussions of sociotechnical systems of Iron Age metal producers in the Northern Lowveld.
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Madubansi, Mainza. « Changes in energy use patterns in the Bushbuckridge Lowveld of the Limpopo Province, South Africa : eleven years on ». Thesis, Rhodes University, 2004. http://hdl.handle.net/10962/d1007139.

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This research reports on the energy transition that has taken place in the Bushbuckridge district between 1991 and 2002. It is a follow up to a similar study that was done in 1991 investigating a number of aspects of energy use. It uses the 1991 study as a baseline and aims to explore how the passage of time, growth of the local population and changes in incomes and the availability of fuels have affected the patterns of fuel use in the region in the past eleven years. A structured interview approach was used for most aspects of the study. The interview schedule included sections on types, amounts and reasons for use and non-use of 13 different energy sources as well as data on income levels, household size and other economic parameters. Analysis of the consumption patterns of the different fuel types revealed that between the two survey periods, households in the sample settlements went through some pronounced changes in patterns of fuel use, particularly those that had acquired electricity. The introduction of electricity in the region had certainly played a major role in spurring the energy transition. Fuels that were previously used for lighting, powering entertainment appliances and refrigeration had been displaced by electricity. In terms of cooking and other thermal application, however, the vast majority of households in all the sample settlements continued using fuelwood and complemented it to a lesser extent with paraffin and electricity. In both surveys, the use or non-use of available fuels in the region was influenced by several factors. Common reasons for non-use of certain fuel types included expense, lack of appliances, the risk involved in using such fuels and the preference for other fuels. Reasons for use were mainly related to the low cost of the fuel and the fuel’s ability to meet particular end uses. Although incomes in the region had increased between 1991 and 2002, they were still below the poverty line. Activities from which households obtained their income remained the same. Old age pension, migrant wages and the informal sector remained the largest contributors of income to most households. Other indicators of relative wealth and poverty, like ownership of vehicles, bicycles and beds remained the same.
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Ferguson, Angela Joan. « High elephant impact is capable of converting tall mopane woodland to shrubland in the South East Lowveld of Zimbabwe ». Bachelor's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/12767.

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African elephants are known to be important agents of structural and compositional changes in several vegetation types in southern Africa. This is of concern for biodiversity conservation and management of wildlife areas in the region. This study assesses how increasing elephant numbers have already altered and are likely to continue to modify the structure and composition of mopane woodlands in the south-eastern lowveld of Zimbabwe. Several features of vegetation structure and composition were quantified and compared across areas under three different elephant densities: low, intermediate and high. We assessed the degree, nature and patterns of damage incurred by woody plants within these woodlands to determine how elephants are both driving and responding to the changes in the vegetation. Increasing elephant densities were associated with increased losses of tall trees and the resultant development of a coppiced shrub layer. As elephant densities increased from low to intermediate levels, so did the level of damage to both shrubs and trees. However, elephants appeared to exhibit a functional response such that the increase in damage to the shrub layer was proportionately higher than to trees, probably because the coppiced shrub layer was a preferable food source. Nevertheless if elephant density increases further to high levels, damage to trees is likely to continue increasing suggesting that tree losses are likely to continue. In particular, the high level of bark damage to emergent trees is predicted to contribute greatly to further tree losses. This study provides evidence to suggest that increasing elephant impact is capable of completely converting tall mopane woodlands to shrublands. This is likely to have indirect effects on the ecosystem functioning and diversity of these areas as well as tourism, and is consequently of concern for local management. Continued monitoring of these woodlands and management of elephant abundance is advisable if a total conversion to shrubland is to be avoided.
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Bowyer-Bower, Tanya A. S. « Land surface response to rainfall in semi-arid systems : determinations from experiments using simulated rainfall in the Lowveld of Swaziland ». Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317725.

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Livres sur le sujet "Lowveld"

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Cumes, David. Healing trees & plants of the Lowveld. Cape Town, South Africa : Struik Nature, 2009.

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Funston, Malcolm. Bushveld trees : Lifeblood of the Transvaal lowveld. Vlaeberg : Fernwood Press, 1993.

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Val, Thomas, dir. Sappi tree spotting : Lowveld, including Kruger National Park. 2e éd. Johannesburg, South Africa : Jacana, 2001.

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Hilton-Barber, Bridget. Postcards from the ledge : Travel tales of the Lowveld. Cape Town : Struik, 2006.

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The Bushveld : A South African field guide, including the Kruger Lowveld. 2e éd. Pinetown : Southbound, 2012.

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Kotzé, J. C. Violent social relationships and family life in two Transvaal lowveld settlements. Pretoria : Co-operative Research Programme on Marriage and Family Life, 1995.

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Niehaus, Isak A. Witchcraft, power, and politics : Exploring the occult in the South African lowveld. Cape Town : David Philip, 2001.

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8

Butchart, Duncan. Wildlife of the Lowveld : Common animals and plants, including Kruger National Park. Cape Town : Struik, 2001.

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9

From wilderness vision to farm invasions : Conservation & development in Zimbabwe's South-east Lowveld. Oxford : James Currey, 2007.

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10

Tyobeka, Jennifer D. Rural-development in the southern lowveld : An appraisal of the Elulakeni Rural Development Programme. [Swaziland : s.n., 1989.

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Chapitres de livres sur le sujet "Lowveld"

1

Chingono, Kudakwashe Rejoice. « A2 fast-track Lowveld sugar cane farms ». Dans Everyday Crisis-Living in Contemporary Zimbabwe, 63–74. New York : Routledge, 2020. : Routledge, 2020. http://dx.doi.org/10.4324/9781003026327-6.

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Matandirotya, Newton R., Dirk P. Cilliers, Roelof P. Burger, Christian Pauw et Stuart J. Piketh. « Risks of Indoor Overheating in Low-Cost Dwellings on the South African Lowveld ». Dans African Handbook of Climate Change Adaptation, 1583–600. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_123.

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AbstractThe South African Lowveld is a region of land that lies between 150 and 2000 m above sea level. In summer the region is characterized by the maximum mean daily ambient temperature of 32 °C. The purpose of the study was to characterize indoor thermal environments in low-cost residential dwellings during summer seasons as climate is changing. Indoor and ambient air temperature measurements were performed at a 30-min temporal resolution using Thermochron iButtons in the settlement of Agincourt. 58 free running low-cost residential dwellings were sampled over the summer seasons of 2016 and 2017. Complementary ambient air temperature data were sourced from the South African Weather Service (SAWS). Data were transformed into hourly means for further analysis. It was found that hourly maximum mean indoor temperatures ranged between 27 °C (daytime) and 23 °C (nighttime) for both living rooms and bedrooms in summer 2016 while in 2017, maximum mean indoor temperatures ranged between 29 °C (daytime) and 26 °C (nighttime) in living rooms and bedrooms. Pearson correlations showed a positive association between indoor and ambient temperatures ranging between r = 0.40 (daytime) and r = 0.90 (nighttime). The association is weak to moderate during daytime because occupants apply other ventilation practices that reduce the relationship between indoor and ambient temperatures. The close association between nighttime ambient and indoor temperature can also be attributed to the effect of urban heat island as nighttime ambient temperature remain elevated; thus, influencing indoor temperatures also remain high. These findings highlight the potential threat posed by a rise in temperatures for low-cost residential dwellings occupants due to climate change. Furthermore, the high level of sensitiveness of dwellings to ambient temperature changes also indicates housing envelopes that have poor thermal resistance to withstand the Lowveld region’s harsh extreme heat conditions, especially during summer. The study findings suggest that a potential risk of indoor overheating exists in low-cost dwellings on the South African Lowveld as the frequency and intensity of heat waves rise. There is therefore a need to develop immediate housing adaptation interventions that mitigate against the projected ambient temperature rise for example through thermal insulation retrofits on the existing housing stock and passive housing designs for new housing stock.
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Zazu, Cryton, et Anri Manderson. « Agroecology and Climate Change Adaptation : Farmers’ Experiences in the South African Lowveld ». Dans African Handbook of Climate Change Adaptation, 1–16. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-42091-8_181-1.

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AbstractMotivated by interest to increase the resilience of smallholder farmers to adapt to climate change through uptake of agroecology, two community development organizations commissioned a project evaluation upon which this book chapter is written. The chapter discusses how smallholder farmers were experiencing implementing agroecology, trying to understand the reasons for adopting such an approach to farming. The chapter also explores and problematizes the relationship between trends in adoption of agroecology and the smallholder farmers’ awareness of climate change and adaptation. The chapter confirms that agronomic and income generation are the key reasons for adoption of agroecology. Most of the farmers reminisced about how their crop yields had declined and soils no longer producing enough to feed the family. Other motivating factors for uptake of agroecology included lack of employment, limited income sources, access to health organic foods, and medicinal value of herbs grown. The chapter further concluded that the correlation between adoption of agroecology and farmers’ awareness of it as a climate change adaptation measure is generally weak. Smallholder farmers adopted agroecology more for responding to issues of food security, than any conscious desire to adapt to climate change. Implications of this observation is that practitioners working with smallholder farmers need to rethink their approaches and design of interventions to integrate climate change education and learning, so that strong connections between the agroecological practices promoted and adaptation to climate change are made. Such an approach has potential to improve the sustainability and value of the agroecological practices adopted.
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Zazu, Cryton, et Anri Manderson. « Agroecology and Climate Change Adaptation : Farmers’ Experiences in the South African Lowveld ». Dans African Handbook of Climate Change Adaptation, 363–78. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_181.

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AbstractMotivated by interest to increase the resilience of smallholder farmers to adapt to climate change through uptake of agroecology, two community development organizations commissioned a project evaluation upon which this book chapter is written. The chapter discusses how smallholder farmers were experiencing implementing agroecology, trying to understand the reasons for adopting such an approach to farming. The chapter also explores and problematizes the relationship between trends in adoption of agroecology and the smallholder farmers’ awareness of climate change and adaptation. The chapter confirms that agronomic and income generation are the key reasons for adoption of agroecology. Most of the farmers reminisced about how their crop yields had declined and soils no longer producing enough to feed the family. Other motivating factors for uptake of agroecology included lack of employment, limited income sources, access to health organic foods, and medicinal value of herbs grown. The chapter further concluded that the correlation between adoption of agroecology and farmers’ awareness of it as a climate change adaptation measure is generally weak. Smallholder farmers adopted agroecology more for responding to issues of food security, than any conscious desire to adapt to climate change. Implications of this observation is that practitioners working with smallholder farmers need to rethink their approaches and design of interventions to integrate climate change education and learning, so that strong connections between the agroecological practices promoted and adaptation to climate change are made. Such an approach has potential to improve the sustainability and value of the agroecological practices adopted.
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5

Matandirotya, Newton R., Dirk P. Cilliers, Roelof P. Burger, Christian Pauw et Stuart J. Piketh. « Risks of Indoor Overheating in Low-Cost Dwellings on the South African Lowveld ». Dans African Handbook of Climate Change Adaptation, 1–18. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-42091-8_123-1.

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6

Cole, M. M. « The vegetation over mafic and ultramafic rocks in the Transvaal Lowveld, South Africa ». Dans The Ecology of Areas with Serpentinized Rocks, 333–42. Dordrecht : Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-3722-5_13.

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« Leprosy of a deadlier kind : Christian conceptions of aids in the south african Lowveld ». Dans Aids and Religious Practice in Africa, 307–32. BRILL, 2009. http://dx.doi.org/10.1163/ej.9789004164000.i-410.106.

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Alfred, Mavondo Greanious, Shirichena Kudakwashe, Moyo Obadiah, Chikuse Francis Farai, Mkwanazi Blessing Nkazimulo et Gwatiringa Calletta. « Appropriateness of Sugarcane Out-grower Support Programs : Towards Improving the Yields in Lowveld of Zimbabwe ». Dans Cutting-edge Research in Agricultural Sciences Vol. 10, 114–35. Book Publisher International (a part of SCIENCEDOMAIN International), 2021. http://dx.doi.org/10.9734/bpi/cras/v10/2301e.

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« A 21600MHz CMOS Clock Recovery PLL with LowVdd Capability ». Dans Phase-Locking in High-Performance Systems. IEEE, 2009. http://dx.doi.org/10.1109/9780470545492.ch79.

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