The main objective of this study is to examine the potential contribution of households’ involvement in mopane worm activities (harvesting, commercialisation and consumption) to households’ food security in the Mopani District of the Limpopo Province. Data was collected using a structured questionnaire from a stratified sample of 120 households, 60 of which are mopane worm harvesters. The Binary Logit Model was used to determine households’ socio-economic factors affecting participation in mopane worm harvesting. The results revealed that gender of the household head, age of the respondent, households’ size and the level of income per month increases the probability of households participating in mopane worm harvesting whilst distance to the market and food expenditure as well as religion (belonging to the Zion Christian Church) decreased the probability of being mopane worm harvester. The Ordinary Least Square (OLS) model was used to identify households’ socio-economic factors that determine the rate of commercialisation of mopane worms within harvesting households. 53 percent of the households commercialized their harvest. The model identified that gender, harvesting experience and income from mopane worm sales are the main factors determining commercialisation within harvesting households. The Household Food Insecurity Access Scale (HFIAS) was used to determine household food security status. The result revealed that about 20 percent of the harvesters were food secure, while 80 percent where food insecure. In addition, about 12 percent of the non-harvesters were food secured. An OLS model was also used to examine the impact of mopane worms in the food security status of the households in the Limpopo Province. The results revealed that age, education level of a household head, level of income, income from mopane worm sales and frequency of consuming mopane worm/day improve the food security status of households whilst households’ size and the distance to the market worsens the food security status of the households. The study found that about 48 to 60 percent of the households to be adopting less pervasive strategies like asking neighbours/family relatives for help, borrowing money for food and selling mopane worms for cash to protect their food consumption and over 70 percent adopted strategies like reducing food intake, portion size and eating less preferred food were adopted to modify their food consumption. The findings indicated that policy priorities should be focused on the promotion of harvesters associations for collective marketing and creating an enabling environment for sustainable harvesting and commercialisation. / M. Sc. Agric. University of KwaZulu-Natal, Pietermaritzburg 2013.

Thesis (MScAgric (Agricultural Economics)--University of Stellenbosch, 2005. / This study discusses the importance of home production for home consumption (HPHC) and its economic contribution to South African Agriculture. The Income and Expenditure survey 2000 (IES 2000) dataset is used to draw conclusions in this study. IES 2000 contains a section on HPHC. HPHC aims to capture information on the quantities and values of home produce consumed and sold to the market. Home production often forms an important part of the livelihood strategies of rural households in developing countries. The study focuses on rural ...

Thesis (MAgric (Agricultural Economics))—University of Stellenbosch, 2006. / The natural resources mainly land, forests, and grazing lands in the Highlands ago-ecological zone of Eritrea are in a severely degraded state. And much of these common pool resources comprise commons i.e. they are managed under the common property rights management regimes. “The tragedy of the commons”, model suggests that all commons will inexorably suffer overexploitation and degradation. Contrary to this deterministic proposition, however, common property theory argues that the ‘tragedy’ is not due to inherent flaws in the common property rights management regimes, but because of institutional failure to control access to resources, and to make and enforce internal decisions for collective use. If the commons dilemma situation exists- i.e. ‘tragedy’, then the underlying problem is the degeneration of the existing common property rights resource management regime into open-access-like regime—a condition that can potentially trigger “the tragedy of the commons”. The question of how to deal with the problem of the commons is, therefore, primarily an issue of the existence of efficient institutions. The prevailing severe degradation of the common-pool resources in the Highlands of the country thus calls into question the robustness of the common property rights regimes that are in place for the governance of these resources. This thesis attempts to address this important problem specifically in relation to forest and grazing land common pool resources. A case study based on a single-case qualitative and exploratory-explanatory research design was carried out in a village located in the Highlands of the country. Data were collected through various forms of interviews (semi-structured interviews, in-depth interviews, key informants interviews, group discussions, and informal conversational interviews), direct observation, and document review. The data, gathered largely through using these separate lines of enquiry, were crosschecked to provide a triangulation of methods and to strengthen the validity and reliability of the data. The empirical findings reveal that existing common property rights management regimes for the management of the local common pool resources of the case study area have weakened over time. These findings indicate that, there is a significant incongruence between appropriation and provision rules. And this is manifested in terms of appropriation externalities and demand side and supply side provision externalities. This situation implies that existing local institutional arrangements i.e. common property rights management regimes in the case study area are not sufficiently robust to solve common pool resource appropriation and provision externalities. Though generalisation cannot be made beyond the case that was studied, there are several lessons that may be drawn from this field analysis, which may have valid implications for the natural resources management challenges and opportunities of the entire Highlands agoecological zone of the country.

Thesis (MScAgric (Agricultural Economics))—University of Stellenbosch, 2005. / The study broadly assesses the usefulness of available digital spatial land resource data as a source for agritourism and ecotourism information by comparing the inventory of available spatial data sets for South Africa and the SADC region, with the needs for spatial data as derived from a literature study of travel motivations and demand determinants. Spatial land resource data have been collected, processed and stored for agricultural planning purposes, like land suitability assessment, agricultural production and infrastructural planning. Given a) the growth in agritourism and ecotourism, b) the more detailed information required by tourists to aid them during decision making processes like destination selection and c) the progress in information technology rendering access of information via the internet easier; the question arose whether the available land resource digital data can be processed to provide relevant tourism information on internet websites. Four tasks had to be done, namely: a) identifying tourists’ needs by means of a literature study on travel motivations and demand determinants; b) identifying the land resource data sets that could be processed into information to meet these identified needs; c) determining the accessibility of spatial information on internet tourism websites to potential agritourists and ecotourists, and d) exploring opportunities for adding value by looking at what information existing websites are offering in comparison with what can be obtained from repackaging the land resource data. Common ground was found between the spatial tourist information needs and the available spatial land resource data. This, coupled with the ability of combining meteorological and other humanmade environmental data in GIS modelling, suggests that repackaging land resource data seems to have the potential to offer useful tourism information in correspondence with confirmed tourist information needs.

Thesis (MComm)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: This study analyses the extent to which the current intellectual property system is suited to the protection of traditional knowledge in the Western Cape. Employing a multidisciplinary approach that incorporates economic and legal theory as well as legal philosophy, this study argues that although advances in the fields of biotechnology has brought with it the need for greater intellectual property rights protection, the protection of traditional knowledge has largely been ignored. Traditional ethnobotanical knowledge holds immense economic value for both commercial entities seeking to develop products based on traditional knowledge as well as for the communities that possess such knowledge. Protecting traditional knowledge is necessary to ensure that the communities contributing their knowledge are recognized and compensated for such contributions. In order for a system to provide adequate protection for traditional knowledge it has to be consistent with and suited to the needs of traditional knowledge holders. This study therefore evaluates the prevailing system of knowledge protection as embodied in the intellectual property rights regime as a means of protecting traditional knowledge. The analysis reveals that the dominant justification for the existence ofIPRs is based on utilitarian considerations that promote IPRs as a necessary incentive encouraging innovative activity. This utilitarian justification also provides the basis for an economic justification for the existence of IPRs that suggests that the conferring of exclusive rights (in the form of IPRs) to innovators ensure that such innovators are able to recover their research costs and realize profits from their inventions. The IPR system as it exists is underpinned by these considerations and embedded in principles of individualism and private property. The WTO reinforces and promotes this approach to intellectual property in the TRIPs agreement by recognizing intellectual property as a 'trade related' issue. The inclusion of IPRs as a 'trade related' issue in the multilateral framework of the WTO reflects the interests of multinational corporations and developed nations who rely extensively on these mechanisms to maintain their power and wealth in an increasingly knowledge driven global economy. The exclusion of traditional knowledge within the TRIPs, coupled with the desire to extend patents to cover life forms is also indicative of this bias inherent in the system. South African intellectual property legislation is then applied to the traditional knowledge of an indigenous medicinal plant to test whether IPRs are able to provide adequate protection to traditional knowledge. In this regard it is found that patent protection, which could potentially provide the greatest form of protection for traditional knowledge is. not suited to the needs of traditional knowledge holders. Problems of identifying owners, determining inventors and novelty, time limited rights and costs all limits the potential of patents as a tool for protecting traditional knowledge. Similar constraints limit the potential of other categories of IPRs to provide protection for traditional knowledge. However, it was found that IPRs do provide a certain measure of defensive protection. The study therefore concludes that the IPR system as it exists, both in the international trade environment as well as at the national level, fails to adequately address the threat of appropriation and the concerns of traditional knowledge holders. Amending the IPR system and/or developing sui generis systems of protection are therefore necessary to ensure that the knowledge of communities are protected and such communities are able to benefit from the exploitation oftheir knowledge and resources. / AFRIKAANSE OPSOMMING: Die doel van hierdie studie is om vas te stel in hoe 'n mate die huidige sisteem vir die beskerming van intellektuele eiendom geskik is vir die beskerming van tradisionele kennis in die Wes-Kaap. 'n Multidissiplinêre benadering, wat uit elemente van ekonomiese- en regsteorie sowel as regsfilosofie haal, is gevolg om te wys dat die beskerming van tradisionele kennis grootliks geïgnoreer is, alhoewel nuwe deurbrake in biotegnologie die behoefte skep vir groter bekerming van intellektuele eiendom. Tradisionele etnobotaniese kennis het geweldige ekonomiese waarde vir beide die kommersiële entiteite wat produkte uit sodanige kennis wil produseer sowel as vir tradisionele gemeenskappe aan wie die kennis behoort. Dus, indien sulke gemeenskappe voordeel wil trek uit hierdie kennis, is dit nodig dat hul bydraes erken moet word, en dat hulle daarvoor vergoed moet word. Sulke beskerming sal net doeltreffend wees indien dit aangepas is by die behoeftes van hierdie gemeenskappe. Dus word die huidige sisteem vir die beskerming van tradisionele kennis geevalueer in hierdie studie. Die ondersoek wys dat die sisteem vir die beskerming van intellektuele eiendom berus op die teoretiese basis van nutsmaksimering, waar die hoofdoel te vinde is in die bydrae wat dit kan maak tot ekonomiese welvaart deur middel van innovasie. In hierdie opsig word beskerming van intellektuele eiendom beskou as 'n manier waardeur die innoveerder sy navorsings- en ontwikkelingskostes kan delg en wins kan maak. Hierdie benadering word onderskryf deur die WTO in die TRIPS Ooreenkoms. In hierdie opsig word die belange van veral die ryk lande en die multinasionale maatskappye bevorder, 'n sleutelvoordeel in 'n wêreld waar kennis gepaardgaan met mag in die mark. Hierdie verskynsel word versterk deur die uitsluiting van tradisionele kennis van die TRIPS Ooreenkoms en die behoefte daaraan om patentregte uit te brei. Suid-Afrikaanse wetgewing oor intellektuele eiendom word vervolgens toegepas op die geval van tradisionele kennis oor 'n inheemse medisinale plant om te toets of intellektuele eiendomsreg genoegsame beskerming aan tradisionele kennis bied. Daar is gevind dat patentregte, wat potensieël die grootste mate van beskerming sou kon bied, nie gepas is in die geval van houers van tradisionele kennis nie. Probleme wat voorkom sluit in die identifisering van eienaars, innoveerders en innoverings, die tydsbeperking op regte, asook kosteoorwegings. Ander vorms van beskerming is aan soortgelyke kritiek onderhewig, alhoewel bevind is dat intellektuele eiendomsreg wel 'n mate van defensiewe beskerming bied. Die gevolgtrekking word dus gemaak dat die huidige vorms van beskerming vir intellektuele eiendomsreg, beide internasionaal sowel as in Suid-Afrika, nie die belange van die houers van tradisionele kennis beskerm nie. Dit is dus nodig om die huidige vorms aan te spreek, of om sui generis beskerming te ontwikkel om hiervoor te sorg.

Thesis (MScAgric)--Stellenbosch University, 2004. / ENGLISH ABSTRACT: European-South African trade relations concerrnng wine and spirits are characterized by various opportunities and, at the same time, a range of conflicts. The latter notably relates to the dispute over geographical indications and designations of origin. Considering this confusing amalgamation of discord and harmony, it is the purpose of this study, entitled "International Trade in Wine and Geographical Indications - Common Interests between the EU and South Africa", to understand the rationale for trade in wine from both sides of the coin. Moreover, this research assesses possible multilateral and bilateral solutions for dealing with trade frictions between the EU and South Africa and identifies common interests with a view to establish a lasting foundation for blossoming trade in wine and sustained growth. The underlying methodology is a qualitative interpretative approach and bases on insights into modern marketing and international management theory. On this basis the "objective" interests of the EU and South Africa in trade in wine are analysed in order to assess the coming into existence of the Trade, Development and Cooperation Agreement as well as the Wine and Spirits Agreement. Pivot of these trade negotiations is the dispute on geographical indications, which is scrutinized by looking into relevant chapters of the WTO and its TR.IPS Agreement. With regards to the Wine and Spirits Agreement it is salient to ask whether it is economically and politically reasonable for South Africa to accept a financial package from the EU to secure the 'voluntary' phasing out of a number of trademarks and geographical indications. The study concludes with an outlook regarding the globalisation of the world's wine market, potential future investment flows between the EU and South Africa and the need for an effective marketing strategy in order to become or remain global player in an increasing competitiveness caused by globalisation. / AFRIKAANSE OPSOMMING: Europese en Suid-Afrikaanse handelsverhoudinge in wyn en spiritualieë word gekenmerk deur verskeie geleenthede en terselfdertyd 'n reeks konflikte. Laasgenoemde hou merkbaar verband met die twis oor geografiese indikatore en aanwysings van oorsprong. Gegewe hierdie verwarrende tweedrag en harmonie, is die doel van hierdie studie, getiteld "Internasionale Handel in Wyn en Geografiese Aanwysings - Gemeenskaplike belange tussen die EU en Suid-Afrika", om die 'rationale' agter die wynhandel van twee kante te beskou. Verder ondersoek hierdie navorsing moontlike multi- en bilaterale oplossings vir die handelswrywing tussen die EU en Suid-Afrika en identifiseer gemeenskaplike belange met die doelom 'n fondament te bou vir volhoubare groei in die wynhandel. Die onderliggende metodologie is 'n kwalitatiewe verklarende benadering, gebaseer op insigte uit moderne bemarkings- en bestuursteorie. Op hierdie vlak word die 'objektiewe' belange van die EU en Suid-Afrika in die wynhandel ontleed om gevolgtrekkings oor die Handels-, Ontwikkelings- en Samewerkingsooreenkoms en die Wyn- en Spiritualieë- Ooreenkoms te maak. Onderliggend aan hierdie onderhandelinge is die twis oor geografiese aanwysings, wat noukeurig ondersoek is deur relevante hoofstukke van die WHO Ooreenkoms en sy TRIPS-komponent te raadpleeg. Met verwysing na die Wyn- en Spiritualieë- Ooreenkoms is dit voor die hand liggend om te vra of dit ekonomies en polities verstandig vir Suid-Afrika is om 'n finansiële pakket van die EU te aanvaar in ruil vir die vrywillige uitfasering van 'n aantal handelsmerke en geografiese aanwysings. Die studie sluit af met '11" blik op globalisering van die wêreld se wynmarkte, die potensiële toekomstige vloei van beleggings tussen die EU en Suid-Afrika, en die behoefte aan 'n effektiewe bemarkingsstrategie om 'n globale speler te word.

Thesis (MScAgric)--Stellenbosch University, 2000. / ENGLISH ABSTARCT: The Law on the Marketing of Agricultural Produce (no 47 of 1996) introduced a new era in the marketing of deciduous fruit. Previously the producer was obliged by statute to deliver his deciduous fruit to Unifruco, the sole agent of the Deciduous Fruit Board, for exports to the overseas markets. In this era of statutory marketing control the producer could only take decisions about his product up to the point where it left the farm gate. In the deregulated marketing environment, the producer can now, however, control the marketing of his products until it reaches the end consumer abroad. The purpose of this thesis is to identify the factors, processes, opportunities and possible pitfalls with which the individual producer now has to contend, and to describe them qualitatively in order to enable him to decide how he will market his products in the environment of a deregulated market. In order to make a decision, the producer must have a vision and goals to achieve. The different facets in formulating these are discussed. The different decisionmaking phases that are employed interactively, to facilitate the making of a marketing decision, are investigated and clearly stated. These phases include the preparatory phase, the investigation of the distribution channel, as well as that of agents, the different marketing alternatives and eventually the actual taking of interactive marketing decisions. It has become quite clear, through the research done, that in future, the sustainability of every producer of deciduous fruit will be determined by his ability to make informed marketing decisions, and to adapt to the new marketing environment. / AFRIKAANSE OPSOMMMING: Die Wet op die Bemarking van Landbouprodukte (No 4 7 van 1996) het 'n nuwe era in die bemarking van sagtevrugte ingelei. In die verlede was die produsent statuter verplig om sy sagtevrugte aan Unifruco, alleenagent van die Sagtevrugteraad, te !ewer vir uitvoer na die buiteland. Die produsent het in die era van statutere bemarkingsbeheer dus slegs besluite ten opsigte van sy produk geneem tot waar dit die plaashek verlaat. In die gedereguleerde bemarkingsomgewing kan die produsent egter nou self besluite neem oor die bemarking van sy produk tot waar dit in die buiteland die hande van die eindverbruiker bereik. Die doel van die tesis is om die faktore, prosesse, geleenthede en moontlike slaggate waarmee die individuele produsent nou te kampe het, te identifiseer en kwalitatief te beskryften einde horn in staat te stel om te besluit hoe hy sy vrugte in die gedereguleerde bemarkingsomgewing kan bemark. Vir di.e neem van besluite is dit noodsaaklik dat 'n produsent 'n missie en doelstellings het. Die verskillende fasette by die opstel daarvan word bespreek. Die verskillende besluitnemingsfases wat interaktief aangewend word om die bemarkingsbesluit te neem, word ondersoek en uitgespel. Dit sluit in die voorbereidingsfase, die ondersoek van die distribusiekanaal, die ondersoek na agente, die verskillende bemarkingsalternatiewe en dan die neem van die interaktiewe bemarkingsbesluite. Uit die ondersoek is dit duidelik dat elke sagtevrugteprodusent se volhoubaarheid in die toekoms bepaal sal word deur sy vermoe om ingeligte bemarkingsbesluite te kan neem en dus by die nuwe sagtevrugtebemarkingsomgewing aan te pas.

Thesis (MScAgric.)--Stellenbosch University, 2001. / ENGLISH ABSTRACT: After sixty years of state control, the agricultural sector in South Africa has been transformed to the so-called free dispensation, with the driving forces being market access and rules of the WTO. On the one hand, this increased the exposure of the sector, particularly at international level where interest for South African produce developed. On the other hand, transformation induced a considerable degree of price squeeze and risk in the production of certain commodities including wheat. Notwithstanding, local wheat producers like any other farmers are generally price takers, and in some cases do not have a comparative advantage in what they produce. This is worsened by policy distortions in product markets, although to a lesser extent than before. These distortions are responsible for farmers to make decisions that are neither economically efficient nor optimal in a social sense. Therefore, the uncertain future of the wheat industry, particularly in the Western Cape, including the changing business environment, urges producers to adapt quickly if they wish to stay in business. Hence, the challenge for a farmer and agricultural support organisations is to find solutions to these problems. One of the factors that can be looked into in finding solutions is to look at the demand side of the equation by taking product differentiation and market identification into account. In other words, products that carries a specific character, and a niche market where these products attain higher prices are the main objectives of this exercise. In looking at these options, it is necessary to first study the end consumer of these products. Looking at the local market first, there is a relatively small but growing market for high priced niche products, but for the most part, local consumers are looking for low cost commoditytype products. In many cases, South Africa is marginally competitive in these products and so must look at alternative markets. On the export market, on the other hand, consumers are generally more sophisticated and specific in the kind of food they demand, where they are looking for quality and tracebility, and are willing to pay a premium which can be exploited. Therefore, the aim of this study is to determine whether wheat would have a comparative advantage if produced under organic management, as a system that have products with these attributes. The study first evaluates the comparative advantage of the existing industry, the so-called conventional wheat, specifically looking at the policy environment around this commodity, as these are likely to affect the potential of organic wheat. The Policy Analysis Matrix technique is used to calculate various indicators of comparative advantage and to identify the effects of policy measures with regard to wheat. The analysis used the available data for ten selected farming areas. On the other hand, organic wheat farming is not practised in the Western Cape at present. As a result, expert assessment was used to provide information based on the reference method. As the study is the comparison of two systems, the results therefore indicates that some areas of the Western Cape do not have a comparative advantage in wheat production under conventional practices, which would not be the case if produced under organic management. The reasoning underlying this is complex, but mainly traced from high levels of input use that carries a distorting effect, partly because of tariffs on imported inputs, unlike organic production which is less subject to this effect. The net effect of the whole policy environment has a negative impact on producers including those of potential organic wheat, as some policies are likely to affect this potential industry. Consequently, it is recommended that farmers must evaluate their options by looking at systems that utilise less distorted inputs, and hence higher profits like organic farming. / AFRIKAANSE OPSOMMING: Na sestig jaar van staats-geheer is die landbsektor van Suid-Afrika omvorm na In sogenaamde vrye bedeling met marktoegang en die reels van die WHO as drywers. Hierdie omvorming het enersyds die blootstelling van die landbou sektor verhoog, veral in die buiteland waar belangstelling in Suid-Afrikaanse produkte toegeneem het. Aan die ander kant het die transformasie die realiteite van die prys-koste knyptang en produksierisiko, ook in die geval van koring, na yore gebring. Plaaslike koringprodusente, soos aIle ander boere, is in die algemeen prysnemers en in sommige gevalle het hulle weinig mededingende voordele in wat hulle produseer. Dit word vererger deur beleidsversteurings in produkmarkte al is die versteurings minder as in die verlede. Die versteurings gee egter steeds daartoe aanleiding dat boere soms besluite neem wat nie ekonomies of sosiaal optimaal is nie. Dit volg dus dat die onsekere toekoms van die koringbedryf, veral in die Wes-Kaap, asook die vinnig veranderende besigheidsomgewing produsente noop om vinnig by die veranderende omstandighede aan te pas indien hulle in besigheid wil bly. Die uitdaging is dus vir boere en hul ondersteuningmeganismes om oplossings vir voorgenoemde probleme te vind. Een moontlike oplossing kan gevind word deur die potensiaal van produkdifferensiasie en mark identifikasie aan die vraagkant van die vergelyking te ondersoek. Met ander woorde, die identifikasie van nis-produkte met In spesifieke karakter wat hoer pryse behaal. Ten einde sodanige produkte te identifiseer is dit nodig om die verbruiker daarvan te analiseer. In die plaaslike mark is daar In relatiewe klein maar vinnig groeiende mark vir hoewaarde nis-produkte. Dit moet egter toegegee word dat die grootste gedeelte van plaaslike verbruikers meer ge'interesseerd is in goedkoop kommoditepe produkte. In die meeste gevalle is Suid-Afrika marginaal kompeterend in hierdie produkte en moet altematiewe markte dus ondersoek word. Hierteenoor is verbruikers in sekere gedeeltes van die uitvoermark meer gesofistikeerd en spesifiek in die aard van die produkte wat verlang word. Die fokus is veral op kwaliteit en naspoorbaarheid en sodanige verbruikers is gewoonlik bereid om In premie te betaal vir produkte wat hierdie behoeftes bevredig. Die doel van hierdie studie is dus om te bepaal of organiesgeproduseerde koring In mededingende voordeel sou he indien dit aan die eienskappe van kwaliteit en naspoorbaarheid sou voldoen. In hierdie studie word die relatiewe mededingendheid van die bestaande stelsel, sogenaamde konvensionele koringproduksie, geevalueer met spesifieke verwysing na die beleidsomgewing waarbinne produksie plaasvind. Hierdie beleidsomgewing sal natuurlik ook In invloed uitoefen op die organiese produksie van koring',f 'n BeleidS}nalise ¥atriks word gebruik om verskillende indikatore van mededingende voordeel te bereken en om sodoende die invloed van die beleidsmaatreels op die koringbedryf te analiseer. Vir konvensionele produksie is bestaande data uit tien verskillende boerderygebiede gebruik. Alhoewel geen voorbeelde gevind kon word van bestaande gesertifiseerde organiese koringproduksie in die Wes-Kaap nie, is die ekspert-groep tegniek met behulp van die verwysingsmetode gebruik om die nodige data te genereer. Aangesien die studie 'n vergelyking tussen twee stelsels is, is gevind dat waar die konvensionele produksie van koring geen mededingende voordele in sekere gebiede van die Wes-Kaap geniet nie, dit weI mededingende voordele tydens organiese verbouing in hierdie gebiede geniet. Alhoewel die onderliggende redes hiervoor kompleks is, kan dit herlei word na die hoe vlakke van beleidslersteurde insette wat tydens die konvensionele produksie van koring gebruik word. Hierteenoor steun organiese produksie meer op plaasgeproduseerde insette wat die distorsies dus verminder. Die netto effek is egter dat die beleidsomgewing 'n " negatiewe impak op produsente, ingeslote potensiele organiese produsente, inhou. Gevolglik word dit aanbeveel dat produsente hul opsies moet oorweeg deur veral te fokus op stelsels, soos organiese verbouing, wat minder beleidversteurde insette gebruik en waar die winsmoontlikhede dus hoer is.

Thesis (MSc)--Stellenbosch University, 2002. / ENGLISH ABSTRACT: A vast literature on the incompatibility of socio-economic development and environmental conservation (also referred to as sustainable development) has developed over the past few years. This study takes on the form of a critical, problemdriven discussion and evaluation of the applicability and viability of the concept of capacity-sharing to the current South African water management regime. Within the study, the complexities involved in the shift from a supply- to demandoriented management strategy are examined in depth. This transition in strategy proves to be problematic for water policy makers and managers because of past management regimes and structures, measurement related problems, incorrect or insufficient definition of criteria needed for demand-oriented approaches and the emotional complexities regarding water use. Developments in water policy are currently at a point where problems are experienced regarding the practical implementation of proposed water demand-oriented policy. The concept of capacity-sharing is explained and discussed in detail, leading to the identification of the applicability to three of the most important problems (basic contradiction within the 1998 National Water Act, initial allocation for market adoption and equity within the market) faced within the transition towards a demand-oriented approach. This study found that the concept of capacity-sharing does hold applicability in addressing the above-mentioned three problems towards the transition to a demand-side management approach. Capacity-sharing, therefore, should be part of this timely transition and the state should make use of the advantages of this concept. To support this view, seven studies are proposed for further research to address the problems as mentioned in section 5.2 of the thesis. / AFRIKAANSE OPSOMMING: 'n Uitgebreide literatuur aangaande die onversoenbaarheid van sosio-ekonomiese ontwikkeling en omgewingsbewaring (ook volhoubare ontwikkeling genoem) het oor die afgelope paar jaar ontwikkel. Hierdie studie neem die vorm van 'n kritiese, probleemgedrewe bespreking ten opsigte van die toepasbaarheid en relevansie van die konsep van kapasiteitsdeling binne die orde van huidige Suid Afrikaanse waterbestuur, aan. Die vele aspekte van die klemverskuiwing van 'n aanbod- na 'n vraag-georiënteerde waterbestuur-strategie, word ook beklemtoon. Hierdie oorgang is problematies vir waterbeleid-formuleerders en bestuurders as gevolg van vorige waterbestuur-ordes en strukture, meetbaarheid georiënteerde probleme, foutiewe of onvoldoende definieering van watergebruik-regte en die emosionele kompleksiteite van water. Tans, word probleme rakende die praktiese implementering van voorgestelde vraag-georienteerde waterbeleid ervaar. Die konsep van kapasiteitsdeling word in detail verduidelik en bespreek waarvandaan die toepasbaarheid op drie van die belangrikste probleme (basiese kontradiksie binne die 1998 Nasionale Waterwet, aanvanklike verdeling van water gebruik regte vir opname binne die mark en die kwessie van regverdigheid binne die mark) vir die oorgang na 'n vraaggeoriënteerde strategie geïdentifiseer word. Die studie het bevind dat die konsep van kapasiteitsdeling wel relevansie ten opsigte van die bogenoemde drie probleme tydens die oorgang na 'n vraag-georiënteerde strategie, inhou. Kapasiteitsdeling behoort dus deel te vorm van die oorgangsfase na 'n vraag-georiënteerde water bestuur strategie en die staat behoort gebruik te maak van die konsep se voordele. Ter ondersteuning hiervan word sewe studies voorgestel vir verdere navorsing ten opsigte van die probleme soos geïdentifiseer in afdeling 5.2 van die tesis.

Thesis (MScAgric (Agricultural Economics))--University of Stellenbosch, 2011. / ENGLISH ABSTRACT: The rising demand of fish due to population growth coupled by stagnation of fish supply from natural capture has led the world to turn to aquaculture to fill in the gap between fish supply and demand. Aquaculture has emerged as the only sustainable way of supplying the rising population with fish. However the rapid expansion of aquaculture has been met with growing concerns over its environmental effects especially waste produced from aquaculture. The net cage system that is currently being used by small scale trout farmers in the Western Cape is an open water based system where release of waste into the water bodies is inevitable and this put into question the long term sustainability of trout farming using net cages in irrigation dams in the Western Cape. This study sought to compare identified production techniques that can be used by aquaculture farmers to reduce accumulation of organic waste in irrigation dams. The proposed ‘clean’ production techniques include use of net cages fitted with Lift-up system, semi intensive floating tank system (SIFTS) and intergrated aquaculture systems. The study revealed that the intergrated aquaculture system is the most effective way of recovering waste that shows great potential of moving aquaculture towards long term sustainability as it fullfills sustainability dimensions such as ‘zero emission’, nutrient recycling and integrated production. Mechanical methods of recovering waste such as Lift-up system and SIFTS are also effective in recovering particulate waste but however dissolved nutrients are lost into the environment. The study went on further to investigate if economic, environmental and social benefits of recovering waste from irrigation dams outweigh the costs of recovering waste using different production techniques. Models of small scale aquaculture farms using the three identified production techniques were developed and compared with a modelled small scale net cage farm where there was no waste recovery. A comparative financial analysis of the modelled small scale trout farms using alternative production techniques carried out showed that trout production using any of the three alternative ‘clean’ production techniques is financially viable with the SIFTS production technique giving the farmer the highest returns, followed by the intergrated system, then the net cage with a Lift-up system and lastly the net cage system without waste recovery. The second part of the study used the contingent valuation method to estimate the environmental and social benefits of removing waste from dams. Households revealed that they were willing to pay (WTP) R40 on average annually to improve water quality from a state where eutrophication had occurred to a state suitable for irrigation and aquaculture. To improve water quality from a state suitable for irrigation to a state suitable for swimming, households were willing to pay R16.67 annually. If water was to be improved from a state suitable for irrigation to a level suitable for domestic purposes, average willingness to pay (WTP) was R26.17 annually. WTP indicate that besides financial benefits associated with using ‘clean’ production techniques there are environmental and social benefits that will arise to the farm community using water from the irrigation dams. / AFRIKAANSE OPSOMMING: Die stygende vraag na vis as gevolg van bevolkingsgroei, tesame met die stagnering van die aanbod van vis vanaf natuurlike vangste het daartoe aanleiding gegee dat die oë van die wêreld op akwakultuur gerig is om die gaping in die voorsiening van vis te vul. Akwakultuur het ontwikkel as die enigste volhoubare manier om aan die groeiende vraag na vis te voldoen. Die vinnige uitbreiding van akwakultuur het egter toenemende besorgdheid in die nadelige omgewingsimpak, veral ten opsigte van akwakultuurafval, tot gevolg gehad. Die nethokstelsel wat tans deur kleinskaalse forelboere in die Wes-Kaap in oop watergebaseerde sisteme gebruik word en die vrystelling van afval in die wateromgewings wat onafwendbaar is, plaas ’n vraagteken oor die langtermyn volhoubaarheid van die nethokstelsel forelboerdery in besproeiingsdamme in die Wes- Kaap. Die studie het ten doel gehad om geïdentifiseerde produksiestelsels wat deur akwakultuurboere gebruik kan word om die akkummulasie van organiese afval in besproeiingsdamme te verminder, te vergelyk. Die voorgestelde “skoon” produksietegnieke sluit in nethokke wat aan ’n opligstelsel gekoppel word, ‘n semi-intensiewe drywende tenk- stelsel (“SIFTS system” in Engels) en ‘n geïntegreerde akwakultuurstelsel. Met hierdie studie is bevind dat die geïntegreerde stelsel die mees effektiewe manier is om afval te herwin en toon potensiaal om akwakultuur op ’n vohoubare pad te plaas aangesien dit aan die volhoubaarheidsdimensies van geen emissie, voedingstofherwinning en geïntegreerde produksie voldoen. Meganiese metodes van afvalherwinning soos die nethokopligstelsel en die SIFTS-stelsel is effektief in die herwinning van vastestofdeeltjies, maar opgeloste voedingstowwe word steeds in die omgewing vrygestel. Die studie het voorts ten doel gehad om te bepaal of die ekonomiese, omgewings- en sosiale voordele om afval uit besproeiingsdamme te herwin, groter is as die herwinningskoste van die verskillende produksietegnieke. Modelle van kleinskaalse akwakultuurplase wat die drie geïdentifiseerde produksiestelsels gebruik, is ontwikkel en aangewend om te vergelyk met ’n nethokstelsel waar geen afvalherwinning gedoen word nie. ’n Vergelykende finansiële ontleding van die gemodelleerde kleinskaalse forelboerderye met die verskillende produksietegnieke is gedoen en daar is bevind dat enige een van die drie “skoon” stelsels finansieel lewensvatbaar is, met die SIFTS-stelsel wat die hoogste vergoeding aan die boer bied, gevolg deur die geïntegreerde stelsel, dan die nethokke aan ’n opligstelsel en dan die nethokstelsel sonder afvalherwinning. Die tweede deel van die studie het van die voorwaardelike (“contingent”) waardasiemetode gebruik gemaak om die omgewings- en sosiale voordele om afval uit besproeiingsdamme te verwyder, te bepaal. Huishoudings het aangetoon dat hulle bereid sou wees om tot R40 per jaar te betaal om die waterkwaliteit te verbeter vanaf ’n toestand waar eutrifikasie plaasgevind het na ’n toestand waar die water vir besproeiing en akwakultuur geskik sou wees. Om die waterkwaliteit vanaf ’n toestand geskik vir besproeiing te verander na ’n toestand geskik om in te swem, sou huishoudings bereid wees om R16.67 per jaar te betaal. Indien water vanaf ’n toestand geskik vir besproeiing verander sou word na ’n toestand geskik vir huishoudelike gebruik, sou huishoudings gewillig wees om jaarliks R26.17 te betaal. Die “gewilligheid om te betaal” dui aan dat daar bo en behalwe die finansiële voordele om van “skoon” produksietegnieke gebruik te maak, ook omgewings- en sosiale voordele vir die plaasgemeenskap bestaan met die gebruik van die water uit die besproeiingsdamme.