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A comparative study of metamorphosed supracrustal rocks from the western Namaqualand metamorphic complexMoore, John Michael January 1986 (has links)
Bibliography: pages 346-370. / A regional study of highly metamorphosed supracrustal rocks was undertaken in the western portions of the Namaqualand Metamorphic Complex. The study area was essentially restricted to a north-south section some 50 kilometres wide and 220 kilometres long. Eight east-west-trending belts of supracrustal rocks were examined, together with several smaller paragneiss remnants, in an area dominated by quartzo-feldspathic gneisses of granitic composition. The supracrustal rocks were classified into seven major lithological groups: quartzitic rocks, metapelitic and metapsammitic rocks, quartzo feldspathic rocks, metabasites, metacarbonate rocks, magnesium-rich cordierite rocks and iron formations. Further subdivision, based on variations in mineral constituents within each group, also occurred, as well as the presence of lithologies with compositions transitional between certain groups. The various supracrustal sequences were subdivided into formations containing minor distinctive members on an informal lithostratigraphic basis. Correlation between the major supracrustal belts was then undertaken. Four subgroups were identified across the study area, comprising a quartzo feldspathic gneiss subgroup and an overlying feldspathic quartzite/garnetcordierite gneiss subgroup that both predominate in the southern and central part of the area, a glassy quartzite/mica- sillimanite schist subgroup that predominates in the northern part, and a cordierite gneiss/metacarbonate subgroup that is restricted to the Geselskapbank synform. The supracrustal rocks appear to have been emplaced on a basement of augen gneisses. This relationship is, however, complicated by the intrusion of granit i c rocks within the contact zone.
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Land tenure reform in Namaqualand: elite capture and the new commons of Leliefontein.Lebert, Thomas Siegfried January 2005 (has links)
This thesis provides a detailed examination of the development and implementation of a commonage management system on newly acquired municipal commonage in the Leliefontien communal area of Namaqualand, South Africa. This commonage has been acquired ostensibly for use by all of the Leliefontien's residents. A Commonage Committee made up of community members and state representatives manages this land on behalf of the municipality.
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The effect of copper on the growth, development and chemical composition of some dryland wheat cultivars.Gordon, Julie Johannes January 2005 (has links)
Heavy metal accumulation in arable land as a result of mining activities, pesticides and fertilisers has become a global concern. Steinkopf and Concordia in the Northern Cape are well-known for subsistence farming, but just as well-known for the nearby copper mining industry. Very little research has been done on heavy metal toxicity in these areas, thus it was of importance to assess the wheat cultivars (Triticum aestivum) historically used in the study areas, to ensure the viability of wheat farming. The nine wheat cultivars screened were Flameks, Knoppies, Rooiwol, Rooigys, Yecoro Royo, Charchia, Witwol, Kariega and Losper. A comparative study was done by determining the concentration levels of Cu, Fe, Zn, Mn, K, Mg, Ca, Na, N and P in the roots and shoots of sensitive and tolerant wheat cultivars. It was established that Witwol and Rooigys were the most tolerant to these adverse conditions. Kariega and Rooiwol were most sensitive. Their tolerance was achieved by excluding copper from the roots and limiting the translocation of copper to the shoots. This trend to exclude copper uptake in Witwol and Rooigys, warrants further investigation on a molecular level to explain these adaptive mechanisms.
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The effect of copper on the growth, development and chemical composition of some dryland wheat cultivars.Gordon, Julie Johannes January 2005 (has links)
Heavy metal accumulation in arable land as a result of mining activities, pesticides and fertilisers has become a global concern. Steinkopf and Concordia in the Northern Cape are well-known for subsistence farming, but just as well-known for the nearby copper mining industry. Very little research has been done on heavy metal toxicity in these areas, thus it was of importance to assess the wheat cultivars (Triticum aestivum) historically used in the study areas, to ensure the viability of wheat farming. The nine wheat cultivars screened were Flameks, Knoppies, Rooiwol, Rooigys, Yecoro Royo, Charchia, Witwol, Kariega and Losper. A comparative study was done by determining the concentration levels of Cu, Fe, Zn, Mn, K, Mg, Ca, Na, N and P in the roots and shoots of sensitive and tolerant wheat cultivars. It was established that Witwol and Rooigys were the most tolerant to these adverse conditions. Kariega and Rooiwol were most sensitive. Their tolerance was achieved by excluding copper from the roots and limiting the translocation of copper to the shoots. This trend to exclude copper uptake in Witwol and Rooigys, warrants further investigation on a molecular level to explain these adaptive mechanisms.
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Land tenure reform in Namaqualand: elite capture and the new commons of Leliefontein.Lebert, Thomas Siegfried January 2005 (has links)
This thesis provides a detailed examination of the development and implementation of a commonage management system on newly acquired municipal commonage in the Leliefontien communal area of Namaqualand, South Africa. This commonage has been acquired ostensibly for use by all of the Leliefontien's residents. A Commonage Committee made up of community members and state representatives manages this land on behalf of the municipality.
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A comparison of standard scientific methods and pastoralists’ perceptions of vegetation responses to livestock exclusion in Namaqualand, South AfricaSnyman, Dirk 03 1900 (has links)
Thesis (MSc (Conservation Ecology and Entomology))--University of Stellenbosch, 2010. / ENGLISH SUMMARY: Protected areas do not always achieve the desired level of biodiversity conservation, while
often reducing the welfare of indigenous communities by reducing availability of land for
subsistence. Traditional agricultural landscapes are significant biodiversity refugia and can
contribute meaningfully to conservation.
Rangelands comprise one-third to one-half of the world’s terrestrial surface, providing
livelihoods for around 220 million people, usually in a communal subsistence system.
Colonial practices impinged on traditional land-use practices with far-reaching social and
environmental impacts. This has resulted in management based on assumptions regarding
vegetation dynamics and traditional lifestyles that are increasingly shown to be inaccurate. A
comparison of a vegetation survey based on conventional scientific methods and a survey of
the perceptions of pastoralists was undertaken to highlight differences and similarities
between the two knowledge systems with the hope of providing guidelines for more
sustainable land-use practices in the communal rangelands of Namaqualand, South Africa.
Vegetation responses to removal of grazing pressure revealed complex interactions that do
not correspond with the prevailing management paradigm. Rather than a predictive
relationship between livestock and vegetation, environmental factors play a large role in
determining plant composition, abundance and cover. Pastoralists’ perceptions reflected this
complexity in rangeland resource dynamics. The impact of livestock on rangeland resource
dynamics was perceived by herders to be secondary to a range of environmental and climatic
factors. Both sets of results were at odds with the theories that currently govern management
in this system.
Studies in rangeland systems must take the complexity of the subject into account.
Research into such socio-ecological systems must take a multiplicity of factors – social,
environmental, economic, political and other – into account. Implications for management are
that it is inappropriate to adhere strictly to the conventional, conservative strategies that are
prescribed by conservation and agricultural authorities. Rather, a more flexible, opportunistic
grazing strategy would allow the persistence of traditional subsistence livelihoods without
serious negative consequences for biodiversity conservation. / AFRIKAANSR OPSOMMING: Die instelling van beskermde gebiede lewer nie altyd die gewenste vlak van
biodiversiteitsbewaring, terwyl die welvaart van plaaslike gemeenskappe dikwels daaronder
ly deur die afname in grond beskikbaar vir bestaanspraktyke. Tradisionele landboulandskappe
is beduidende biodiversiteitshawens wat ‘n belangrike bydrae tot bewaring kan maak.
Weivelde bevat ‘n derde tot ‘n helfte van die wêreld se landsoppervlakte en ondersteun
rondom 220 miljoen mense, gewoonlik binne ‘n gemeenskaplike bestaansstelsel.
Kolonialisasie het inbraak gemaak op tradisionele bestuurspraktyke, met verrykende sosialeen
omgewingsimpakte. Dit het gelei tot bestuurspraktyke gebaseer op standpunte oor
plantegroeidinamika en traditionele lewenswyses wat toenemend verkeerd bywys word. ‘n
Vergelyking van ‘n plantegroei opname gebaseer op konvensionele wetenskaplike metodes en
‘n opname van die standpunte van veewagters is onderneem om die verskille en
ooreenkomstes tussen die twee kennisstelsels uiteen te lê met die hoop om riglyne vir meer
volhoubare bestuurspraktyke in die meentgronde van Namakwaland, Suid-Afrika te verskaf.
Plantegroei reaksies tot die verwydering van weidingsdruk wys op komplekse interaksies
wat nie ooreenstem met die heersende bestuursparadigma. Eerder as ‘n voorspelbare
verwantskap tussen vee en plantegroei, omgewingsfaktore speel ‘n groot rol in die bepaling
van plantgemeenskapsamestelling, -getalle en grondbedekking. Die veewagters se standpunte
het hierdie kompleksiteit in plantegroeidinamika weerspiëel. Die impak van vee op die
weiveldhulpbron is deur veewagters as sekondêr beskou teenoor ‘n reeks omgewings- en
klimaatsfaktore. Beide stel resultate is in teenstelling met die teoriëe wat tans bestuur in
hierdie stelsel bepaal.
Studies in weiveldstelsels moet die kompleksiteit daarvan in ag neem. Navorsing oor
hierdie sosio-ekologiese stelsels moet ‘n verskeidenheid faktore – sosiale-, omgewings-,
ekonomiese-, politiese- en ander – in ag neem. Implikasies vir bestuur is dat dit onvanpas is
om te volhard met konvensionele, konservatiewe strategiëe voorgeskryf deur bewarings- en
landboukundige gesagte. ‘n Meer aanpasbare, voordeelnemende weidingsstrategie sal die
voortbestaan van traditionele bestaanslewenspraktyke toelaat sonder ernstige negatiewe
nagevolge vir biodiversiteitsbewaring.
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Strip mining rehabilitation by translocation in arid coastal Namaqualand, South AfricaMahood, Kirsten 03 1900 (has links)
Degree of Master of Forestry (Conservation Ecology) / Thesis (MSc)--Stellenbosch University, 2003. / Full text to be digitised and attached to bibliographic record. / ENGLISH ABSTRACT: This study investigates the use of top-soiling, irrigation and translocating indigenous plants to
facilitate the cost-effective return of a mined landscape to its former land-use (small stock
farming) in an arid winter rainfall Succulent Karoo shrub land biome on the West Coast of South
Africa.
Effects of topsoil stockpiling and subsoil mineral concentration on soil fertility and chemistry
were investigated, as soils are likely to determine rates of vegetation recovery on post-mined
areas. Results of a radish bioassay show that stockpiling topsoil and mineral concentration subsoil
decreased soil fertility. Mineral concentration decreased phosphorus, potassium, calcium,
magnesium, carbon and nitrogen levels significantly relative to other soil treatments. Sodium in
freshly deposited tailings was at potentially toxic levels and significantly higher than for all other
soil treatments. Spreading of stockpiled topsoil over tailings may ameliorate harsh conditions
created by mineral separation.
Translocation of plants from pre-mined to post-mined areas was carried out on a trial basis in an
effort to facilitate the return of natural vegetation and processes to strip-mined landscapes. Five
local indigenous plant species: Asparagus spp., Ruschia versicolor, Othonna cylindrica,
Lampranthus suavissimus and Zygophyllum morgsana were planted into multi-species clumps in
a replicated experiment. Variables examined in the translocation trial included the effects of
plant origin, soil treatment and/or irrigation on plant survival and establishment. The proportion
of O. cylindrica transplants surviving for 15 months was greater than for other species. Whole
plants survived better than salvaged plants, and Asparagus spp., R. versicolor, L. suavissimus
and Z. morgsana survived better on stockpiled topsoil spread over tailings than on tailings alone.
Irrigation had no consistent effect across species and treatment replicates. Salvaged-plant
clumps were significantly larger than whole-plant clumps at planting, however, this effect was
not observed after 12 months, indicating that whole-plant clumps grew faster than salvaged-plant
clumps. The evergreen, leaf succulent shrubs O. cylindrica, L. suavissimus and R. versicolor
appeared to be most suitable for large-scale translocation at Namakwa Sands.
The return of biodiversity and changes in soil quality 15 months after translocation trials began
were compared for combinations of top-soiling, irrigation, plant translocation and unmodified
tailings. Irrigation may reduce biodiversity and seedling densities. Over a 15-month period following back filling and topsoil spreading, sodium, potassium and calcium appeared to return
to levels observed for undisturbed soils. Magnesium remains at levels lower than in pre-mined
soil conditions. Soil conditions may be more conducive to plant establishment and rehabilitation
after back-filling of tailings and topsoil spreading. Electrical resistance increased over time
indicating a reduction of free salts and salinity on rehabilitation sites. Phosphorus did not return
to pre-disturbance levels, and carbon remained below pre-mining levels for at least 15 months
after rehabilitation began, remaining a potential limiting factor in rehabilitation.
Each rehabilitation technique that a mine employs has costs and benefits, and it is increasingly
important that insights from ecology and economics are coupled if restoration efforts are going to
succeed. A review of valuation systems indicates that Discounted Cash Flow Techniques (DCF)
are suitable for valuation of rehabilitation operations. / AFRIKAANSE OPSOMMING: Hierdie studie ondersoek die gebruik van bogrond, besproeiing en die oorplanting van inheemse
plante om die koste-effektiewe rehabilitasie van 'n stroopmynlandskap in die droë, winter reënval
streek, Vetplant Karoo aan die Weskus van Suid-Afrika, wat vroeër gebruik is vir kleinvee
boerdery, te bespoedig
Die uitwerking van bogrondopberging en minerale konsentrasie op vrugbaarheid en chemise
komposisie van grond is ondersoek, aangesien dié gronde gewoonlik die herstelspoed van
plantegroei op 'n ou myn terein bepaal. Uitslae van radys proewe toon dat berging van bogrond
en minerale konsentrasie van die onderliggende grond vrugbaarheid van grond laat afneem.
Mynaktiwiteite en die minerale konsentrasie lei tot 'n betekenisvolle verlies aan fosfaat, kalium,
kalsium, magnesium, koolstof en stikstof as die geval met ander bedrywighede. Die vlak van
natrium in oorgeblywende sand na die minerale ekstraksie is hoogs giftig en is veel hoër as na
ander bedrywighede. Die toediening van bogrond oor die oorblywende sand verbeter die
toestand wat deur die skeiding van minerale veroorsaak is.
Oorplasing van plante vanaf ongemynde na rehabilitasie gebiede is op proefbasis uitgevoer in 'n
poging om die terugkeer van natuurlike plantegroei by die strookmyn te bespoedig. Vyf plaaslike
inheemse plantspesies: Asparagus spp., Ruschia versicolor, Othonna cylindrical, Lampranthus
suavissimus en Zygophyllum morgsana is in multi-spesie groepe geplant. Veranderlikes getoets
tydens hierdie proef sluit in plantoorsprong, grond behandeling, en/of besproeiing, op die
oorlewing en vestiging van plante. 'n Groter proporsie O. cylindrical as enige ander spesie het na
15 maande oorleef. Heel plante het beter oorleef as beskadigde plante. Asparagus spp., R.
versicolor, L. suavissimus en Z. morgsana het beter oorleef op gebergde bogrond oor
oorblywende sand as op oorblywende sand self. Besproeiing het nie 'n volgehoue uitwerking
gehad op spesies of op herhaalde replisering nie. Beskadigde plantgroepe was groter as heelplant
groepe toe hulle geplant is maar na 12 maande is opgemerk dat die heel-plante vinniger gegroei
het. Die immergroen vetplante, 0. cylindrical, L. suavissimus en R. versicolor blyk die mees
geskik vir grootskaalse oorplanting by Namakwa Sands.
Herstel van biodiversiteit en veranderings in grondeienskappe 15 maande na proewe begin het, is
vergelyk m.b.t. die toediening van bogrond, besproeiing, oorplanting en onbehandelde
oorblywende sand. Besproeiing kan biodiversiteit en digtheid van saailinge verminder. Vyvtien maande na opvulling en die toediening van bogrond, het kalium, natrium en kalsium teruggekeer
na vlakke in onversteurde grond. Magnesium vlakke was nog altyd laer as dié voordat
mynaktiwiteite aangevang is. Terugplasing van sand en toediening van bogrond mag die
vestiging en rehabilitasie van plante bespoedig. Weerstand vermeerder met tyd wat 'n verlaaging
in vry soute en soutagtigheid in die grond wat gebruik is vir rehabilitasie aantoon. Fosfor het nie
teruggekeer tot vlakke van voorheen nie en vlakke van koolstofhet na 15 maande verlaag gebly,
en kan die potential tot rehabilitasie belemmer.
Elke rehabilitasie tegniek wat die myn gebruik bring kostes sowel as voordele mee. Om
restorasie pogings te laat slaag moet insigte vanaf ekologie en ekonomie saam ingespan word. 'n
Oorsig van waardasie sisteme toon dat Afslag Kontant Vloei Tegnieke geskik is vir die evaluasie
van rehabilitasie programme.
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Strip-mine rehabilitation in NamaqualandSchmidt, Anel 12 1900 (has links)
Thesis (MScFor)--Stellenbosch University, 2002. / ENGLISH ABSTRACT: Namaqualand has a very unusual diversity of plant life, with many endemic plant species. The
fundamental question of this thesis is how this system, damaged by strip-mining activities, can
be rehabilitated. The aim was to base the rehabilitation methods on ecological processes.
In order to answer this question an overview of the relevant literature was needed in
order to identify possible research needs and also to evaluate the work that has been done in
the field of strip-mine rehabilitation in arid areas. An understanding of community and
ecosystem dynamics would help to establish aims and methods for site-specific rehabilitation.
In Namaqualand, South Africa, there is also a need for experimentation to establish which of the
many factors is most limiting to long-term ecosystem recovery.
It is important to have a good knowledge of the successional processes and disturbance
history of the land which needs to be rehabilitated. The vegetation on unmined areas and
mined areas of different ages and treatments after mining, were sampled. It was shown that
some areas could be expected to show a large degree of recovery in the space of a few years,
whilst others would show little or no recovery over a period of decades. It is important to
recognise rehabilitation as a gradual process that takes place at different rates in different areas
and in different years. The planting of Atriplex nummularia and sowing of Atriplex semibaccata
did not facilitate the return of indigenous, perennial species, but rather seem to inhibit their
return.
In view of the importance of topsoil in terms of the fertility of the soil and the seed bank
present in the topsoil, the influence of topsoil removal and stockpiling due to strip-mining
activities were tested. The soil fertility was tested by means of radish bioassays and soil
laboratory analysis, whilst species diversity and richness were tested with seedling emergence
trials. As expected a higher plant species diversity was found on the unmined soils and
radishes grew larger on these soils. The topsoil deteriorated in terms of plant species richness,
diversity and soil fertility whilst it was stockpiled. Direct replacement of topsoil would ensure a
planting medium closer to the pre-disturbance level that could lead to fairly rapid and successful
recolonization of the mined area.
Successful plant recruitment also depends on the microsites to which seeds are
dispersed. The effect that different microsites had on seed germination, seedling growth and
survival was tested. It was found that micro catchments always yielded the highest numbers.
The establishment and survival of seedlings in the other microsite types (under single shrubs,
under clumped shrubs and in the open) varied, depending on the amount of rainfall received in
the particular year. Lastly, I experimented with the translocation of three local, indigenous,
succulent plant species. These plants were transplanted either in clumps of three together or
alone, since I hypothesized that planting them together would facilitate their survival. However,
it was found that it depended largely on the morphology of the plant and the amount of rainfall received in a particular year, whether these plants will compete with each other for limiting
resources or facilitate each other's survival.
The thesis contributes to the understanding of vegetation dynamics in the Succulent
Karoo after strip-mining has taken place. Guidelines are provided based on ecological
processes, for strip-mine rehabilitation in the Succulent Karoo. / AFRIKAANSE OPSOMMING: Namakwaland is bekend vir sy ongewone diversiteit van plante, met baie endemiese spesies.
Die fundamentele vraag wat deur hierdie tesis gevra word is hoe hierdie sisteem, wat beskadig
is deur oppervlak mynbou, gerehabiliteer kan word. Die doel is om die rehabilitasie metodes te
baseer op ekologiese prosesse.
'n Oorsig van die relevante literatuur was nodig om moontlike areas van verdere
navorsing te identifiseer en ook die navorsing wat reeds gedoen is oor rehabilitasie van
oppervlak myne in ariede gebiede, te evalueer. 'n Goeie begrip van gemeenskap en
ekosisteem dinamika sal help om doelwitte en metodes daar te stel vir die rehabilitasie van
spesifieke areas. Dit is ook nodig om in Namakwaland, Suid -Afrika, uit te vind watter van die
baie faktore, die lang-termyn herstel van 'n ekosisteem, die meeste verhinder.
Dit is baie belangrik om In goeie kennis te hê van die versteurings geskiedenis van die
area wat gerehabiliteer moet word, asook die suksessionele prosesse wat werksaam is.
Plantegroei van areas wat op verskillende tye gemyn en verskillend behandel is, asook
ongemynde areas is ondersoek. Sekere areas het In groot mate van herstel gewys in 'n tydperk
van 'n paar jaar, terwyl ander, min of geen hersteloor 'n periode van dekades getoon het nie.
Dit is belangrik om rehabilitasie as 'n geleidelike proses te sien, wat teen verskillende tempos
plaasvind tydens verskillende jare en in verskillende areas. Daar is bevind dat die plant van
Atriplex nummularia asook die saai van Atriplex semibaccata nie die terugkeer van inheemse,
meerjarige spesies bevoordeel nie, maar dit eerder inhibeer.
Aangesien die bo-grond so belangrik is in terme van die grondvrugbaarheid en ook die
saadbank wat teenwoordig is, word die invloed van die verwydering en opberging van die bogrond
getoets. Die grondvrugbaarheid was bepaal deur groei-toetse op radyse en laboratorium
analise op die grond te doen. Die plant spesie diversiteit en rykheid was bepaal met In saad
ontkieming studie. In ooreenstemming met die verwagte uitkoms, was die plant spesie
diversiteit hoër op die ongemynde bo-grond en die radyse het groter geword op dieselfde grond.
Dit kom voor asof die plant spesie diversiteit en rykheid, asook die grond vrugbaarheid afneem
met tyd wat die bo-grond geberg word. Die direkte verspreiding van die bo-grond nadat dit
verwyder is, sal In medium vir die plante verseker wat nader is aan die vlak voordat die grond
versteur is. Dit sal oak sorg vir redelike vinnige en suksesvolle terugkoms van plante op die
gemynde grond.
Die suksesvolle vestiging van plante hang ook af van die mikro areas (klein areas in
terme van die grootte van 'n saad, wat In eie mikro-klimaat vorm), waarna saad versprei word.
Die effek van sulke mikro-gebiede op die ontkieming van saad, die groei van die saailinge en
die oorlewing van die saailinge was bepaal. Mikro-water- opvanggebiede het in al drie bogenoemde gevalle die hoogste syfers getoon. Die vestiging en oorlewing van saailinge in die
ander mikro-gebiede (die area onder enkel struike, die area onder groepe struike en oop areas)
het gevarieer afhangend van die hoeveelheid reënval wat ontvang is in die spesifieke jaar.
Laastens, is daar ge-eksperimenteer met die oorplant van drie plaaslike, inheemse, sukkulente
spesies. Hierdie plante was alleen geplant of in groepies van drie, bymekaar. Die hipotese was
dat huloorlewingskanse beter sal wees as hulle saam geplant word. Dit was egter bevind dat
die hoeveelheid reënval in 'n spesifieke jaar en die morfologie van die plant, bepaal of hulle sal
kompeteer vir die beperkte bronne en of hulle deur saam te groei huloorlewingskanse sal
verhoog.
Hierdie tesis dra by tot die verstaan van die plantegroei dinamika in die Sukkulente
Karoo nadat oppervlak mynbou plaasgevind het. Riglyne vir die rehabilitasie van oppervlak
myne, gebasseer op ekologiese prosesse, word ook voorgestel.
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Weidingsbestuur in 'n semi-ariede omgewing met GIS : Paulshoek gevallestudieCombrink, A. P. (Adrian Peter) January 2004 (has links)
Thesis (MSc)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: Grazing management in the semi-arid communal areas of Namaqualand is investigated in this study.
Paulshoek, situated in the Leliefontein Communal Reserve area, is delineated as the study area and
consists of 20 OOOha.Cattle farming is practised by most households primarily on a subsistence
basis. It is also used as a source of income when financial problems arise. The management of
grazing-land in terms of formal rules and regulations is non-existent with only mutual relationships
between farmers.
The aim of this study is to develop a spatial framework for the management of a sustainable grazing
regime with the aid of Geographic Information Systems (GIS) technology. This aim is reached
through three overlapping goals which are researched individually. The goals are to create a spatial
image of the physical resource base as well as resource usage and from this the development of a
computerised (Excel spreadsheet) spatial management framework for sustainable grazing
management. Through the use of existing data available from the National Botanical Institute (NB!)
as well as other sources and with the aid of GIS technology, coupled with Indigenous Knowledge,
these goals were reached. The stockpost as individual entity is studied to give a broader
understanding of how the herdsmen see their immediate environment. The grazing management
system, as presented in this thesis, consists of a simple Excel Spreadsheet, with inputs from GIS
technology and Indigenous Knowledge. The area is overgrazed, as is seen in the widespread
occurrence of kraalbos cross the Paulshoek landscape.
The recommendations are that this management system should be implemented, which could
minimize the futher overgrazing of the area. The management system relies heavily on the
cooperation of the community and the integration of existing management systems and policies. It
will give a more detailed account of who may own how many stock and where they may graze in
the communal rangelands which will also help in the establishment of new permanent waterpoints
in the area. / AFRIKAANSE OPSOMMING: Weidingsbestuur in die semi-ariede gemeenskaplike gebiede van Namakwaland is in hierdie studie
ondersoek. Paulshoek, geleë in die Leliefontein Gemeenskapsreservaat gebied, word as
studiegebied afgebaken en beslaan ongeveer 20 OOOha.Veeboerdery word deur meeste van die
huishoudings primêr as bestaansboerdery beoefen. Dit word ook gebruik as 'n bron van inkomste
wanneer finansiële probleme ondervind word. Die bestuur van weivelde in terme van formele reëls
en regulasies is glad nie ter sprake nie, slegs onderlinge verhoudinge tussen veeboere bestaan.
Die doel van hierdie studie is om 'n ruimtelike raamwerk te ontwikkel vir die bestuur van 'n
volhoubare weidingsregime deur die aanwending van Geografiese Inligting Stelsels (GIS). Hierdie
doel word behaal deur drie oorkoepelende doelwitte wat elk afsondelik behandel word. Die
doelwitte is om 'n ruimtelike beeld van die fisiese hulpbronbasis asook die benuttingsregime van
die hulpbron te skep, en hieruit 'n rekenaar-gesteunde (Excel sigblad) ruimtelike bestuursraamwerk
vir volhoubare weidingsbestuur te ontwerp. Deur gebruik te maak van bestaande inligting afkomstig
vanaf Nasional Botaniese Instituut (NBI) asook ander bronne en met die koppeling van GIStegnologie
en Inheemse Kennis (IK) is die doelwitte bereik. Die veepos word as entiteit behandel
om 'n beter verstandhouding op te bou van hoe die veewagter sy onmiddelike omgewing bestuur.
Die weidingsbestuurstelsel, soos voorgestel in hierdie tesis, bestaan uit 'n eenvoudige Excel
sigblad, gekoppel aan GIS-tegnologie en Inheemse Kennis. Die gebied is oorbeweid, soos gesien
kan word aan die verspreiding van kraalbos regoor die landskap van Paulshoek.
Die aanbevelings is dat die bestuurstelsel geïmplementeer moet word om te verhoed dat die gebied
verder onderhewig sal wees aan intensiewe beweiding. Die bestuurstelsel berus op die samewerking
van die gemeenskap en die integrasie van bestaande bestuurstelsels. Dit sal tot gevolg hê 'n meer
volledige opname van wie hoeveel vee mag besit en wie waar mag vestig in die weiveld gebied, wat
gevolglik ook die skepping van nuwe permanente waterbronne sal vergemaklik.
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Late Holocene archaeology in Namaqualand, South Africa : hunter-gatherers and herders in a semi-arid environmentOrton, Jayson David John January 2013 (has links)
This study examines mid- to late Holocene Later Stone Age archaeological residues – specifically flaked stone artefacts, ostrich eggshell beads and pottery – from Namaqualand, north-western South Africa. Through its implication in all models so far proposed, Namaqualand is crucial to understanding the introduction of herding to the southern African subcontinent. Despite numerous publications on early herding, many key debates remain unresolved. The study focuses on the northern and central Namaqualand coastline, but sites from other parts of Namaqualand are also described. The stone assemblages are grouped according to variation in materials and retouch and then, along with data from ostrich eggshell beads and pottery, analysed graphically for temporal and other patterning. A cultural sequence is then presented. Using this sequence, key debates on early herding are explored and a hypothesis on its origins is constructed. Indigenous hunter-gatherers occupied the region throughout the Holocene and made Group 1 lithic assemblages from quartz and cryptocrystalline silica with frequent retouched tools primarily in cryptocrystalline silica. A new population – likely Proto-Khoekhoe-speaking hunter-gatherers with limited numbers of livestock – entered the landscape approximately 2000 years ago. They made Group 3 assemblages from clear quartz focusing on backed bladelets. Diffusion of stock and pottery among the local population occurred during this period. Later, c. AD 500, a new wave of migrants appeared. These last were the ancestors of the historically observed Khoekhoe pastoralists; they made Group 2 lithic assemblages on milky quartz without retouched tools. Bead diameter generally increases with time and contributes nothing to the debate. The pottery sequence is still too patchy for meaningful interpretation but differs from that elsewhere. Overall, the differing cultural signatures in western South Africa suggest that, although many questions will likely remain unanswered, a better understanding of southern African early herding will only be possible with a study addressing all regions simultaneously.
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