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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

Socio-economic and environment impacts on the utilisation of umSimbithi Tree (Milletia grandis) in Eastern Cape : a case study of Mt. Thesiger Forest, Pondoland.

Obiri, John Angoro Festus. January 1997 (has links)
Wood products from Milletia grandis (E. Mey) skeels (umSimbithi), a prominent tree in the coastal scarp forests ofPondoland, form an important economic base for the craft workers in Urnzimvubu District ofthe Eastern Cape. The local carving industry draws considerable income in a place where employment opportunities are scarce, poverty is rife and financial burden and dependency is high. Despite the curio trade being perceived as important by the local communities, little is known about this craft work industry or its impact on the forest especially the sustainability of the wood resource base. Resource availability and impacts of harvesting were assessed at Mount Thesiger Forest Reserve (MTFR) through sampling plots and social surveys oflocal carvers and curio traders. Stem size-class distributions ofstanding trees and stumps were used to investigate the present quantity, past harvesting patterns and distribution ofM grandis within the forests. Line transects sampling confirmed umSimbithi as a forest margin species penetrating to about 50 metres into the forest from the edge and its. current use was found to be unsustainable. Current monitoring and management of most State forests in the Eastern Cape is inadequate, and although a harvest ban has been served, it has only led to and encouraged poaching. Social surveys indicated that the quality of monitoring and sustainability of wood stocks in the Headmen forests appear better than in State forests and this raises hope for successful comanagement structures in the area. Craftwood production and derived income varied from one month to another depending on wood availability, size and shape of stems, with straight stems being most preferred. MontWy income per carver was estimated between R960 to RIIOO while the annual yield for the estimated 100 carvers in the communities surrounding MTFR approximated RI.l million. It was observed that higher sales could be obtained if (1) the amount of wood wasted during harvests and carving could be minimised and (2) the craft products were marketed in the lucrative up markets such as Johannesburg, Durban and Maseru. Interviews with 30 carvers pointed to several problems most of them originating from the stoppage of harvest permits following the ban on umSimbithi. Various recommendations addressing carver's needs and promoting sustainable resource management are proposed. These include (1) establishing an appropriate land tenure system, (2) reviewing the permit system, (3) strengthening the institutional capacity ofthe Forest Department and (4) enhancing efforts on community forest outreach through the extension system. Above all, and to achieve sustainable forest management in Pondoland, tenurial rights needs to be addressed and the options of co-management, community management and privatisation are discussed. It was noted that for sustainable development to be realised in Pondoland, co-management ofnatural resources is important and this must be supported by introduction ofother economic activities that would alleviate pressure off the forests. / Thesis (M.Sc.)-University of Natal, Pietermaritzburg, 1997.
162

A survey amongst growing media producers in the United Kingdom with a view to establishing distribution channels for Fibregro exports.

Dobson, Dave. January 2004 (has links)
A new peat replacement product is being manufactured in South Africa. This product which is marketed under the brand name Fibregro is made from spent wattle bark originating from the tanning extract manufacturing process. Fibregro is currently being used in South Africa to dilute and in some instances replace local peat in mushroom and horticultural applications. In addition to its role as a peat replacement, Fibregro is in a position where it could also qualify to cany a Forest Stewardship Council (FSC) label. Once in full production it is estimated that the company will be able to produce more products than can be sold locally. As a result export opportunities need to be pursued. The United Kingdom (UK) was identified as a potential export destination on account of developments in this country in respect of the certification of forest products (especially FSC certification) and moves to reduce peat mining. A mail survey was undertaken amongst growing media producers in the UK to address two key issues relating to Fibregro, namely: • Whether Fibregro's peat free status could be exploited in the UK growing media and mushroom casing markets. • Whether enough advantages existed in the UK market to justify the extra effort and cost associated with qualifying Fibrego to carry an FSC label. Key findings arising from this survey indicate that a niche is developing in the UK growing media market for a good peat substitute. The addition of an FSC label will render the product unique in the growing media market in this country. A number of recommendations arise from this work. These are: • In order to penetrate the UK growing media market Fibrgro must be positioned as an effective peat reducing agent which is capable of extending the peat reduction levels beyond that of composts. • Fibregro distributors should be identified from amongst the larger growing media producers in the UK. • Potential use of Fibregro as a mushroom casing in the UK appears to be limited. • A combination of peat free and FSC labelling while capable of rendering Fibregro unique in the UK growing media market needs to be carefully considered on account of chain-of-custody requirements along the supply chain. / Thesis (M.B.A.) University of KwaZulu-Natal, Pietermaritzburg 2004.
163

Developing and commercializing non-timber forest products: an Anishinaabe perspective from Pikangikum First Nation, Northwestern Ontario

Pengelly, Ryan D. 20 September 2011 (has links)
The purpose of this research was to understand an indigenous perspective on the development and commercialization of non-timber forest products, such as medicines and foods, in Pikangikum First Nation, Northwestern Ontario, Canada. Framed by a research agreement between Pikangikum First Nation and the University of Manitoba, this collaborative research was based on participant observation, field trips, semi-structured interviews, and community workshops. The appropriate development and commercialization of Anishinaabe mushkeekeeh (medicine) and meecheem (food) requires the guidance of community Elders, Anishinaabe knowledge, and traditional teachings. The community is cautiously interested in developing collaborative, diligent, and culturally respectful partnerships that interface knowledge systems. Benefit sharing means the joint ownership of intellectual property and financial benefits, developing employment and capacity-building opportunities for community members, and planning products for community use. This thesis offers a community perspective on how NTFPs might be researched, developed and commercialized in joint and mutually beneficial partnerships with a First Nation.
164

Ethnoecology of Aechmea magdalenae (Bromeliaceae) : a participatory investigation into the sustainable harvest and conservation of a non-timber rainforest product

Ticktin, Tamara. January 2000 (has links)
An understanding of the effects of harvest on wild plant populations is essential for discerning the ecological impacts of past and present human uses of wild species, and for conserving species which are currently overexploited. This dissertation builds on theories and methods to describe and predict the impacts of harvesting non-timber forest products (NTFP) through an ethnoecological study of the terrestrial bromeliad Aechmea magdalenae. A. magdalenae is harvested from the rainforests of South-eastern Mexico where it has a long history of exploitation. The fiber extracted from its leaves is used to embroider leather articles in an artwork known as piteado. The sustainable harvest of this species has been promoted in Mexico as a strategy to conserve forests and provide local people with a stable income. / A combination of demographic, ethnobotanical and participatory methods was used to quantify harvest strategies, measure their impacts on A. magdalenae populations, and assess potential for cultivation. The impacts of harvesting: (1) ramets used for forest plantations; (2) leaves and ramets; (3) and whole plants and ramets, were measured by comparing the dynamics of harvested and nonharvested populations. The demographic implications of variation in the ecological and human context of harvest were examined. The effects of variation in traditional management and traditional knowledge of this species were also quantified. / Analyses using matrix models indicate that primary forest populations harvested for their ramets are declining due to overexploitation. Secondary forest populations are tolerant to ramet harvest and show elevated rates of growth and vegetative propagation in wild and cultivated plants. High rates of fiber harvest have little impact on population growth rates and increase A. magdalenae's tolerance to ramet harvest. The economic and ecological implications of local harvesting strategies vary within regions as well as between regions with short and long histories of A. magdalenae management. A test of the accuracy of estimating maximum sustainable harvests using current approaches illustrates that these methods can lead to erroneous conclusions. / The results of this study are used to suggest improvements for approaches to assessing the impacts of NTFP harvest, for combining traditional ecological knowledge and science in management plans, and for using participatory ecological and ethnoecological research to promote conservation.
165

Developing and commercializing non-timber forest products: an Anishinaabe perspective from Pikangikum First Nation, Northwestern Ontario

Pengelly, Ryan D. 20 September 2011 (has links)
The purpose of this research was to understand an indigenous perspective on the development and commercialization of non-timber forest products, such as medicines and foods, in Pikangikum First Nation, Northwestern Ontario, Canada. Framed by a research agreement between Pikangikum First Nation and the University of Manitoba, this collaborative research was based on participant observation, field trips, semi-structured interviews, and community workshops. The appropriate development and commercialization of Anishinaabe mushkeekeeh (medicine) and meecheem (food) requires the guidance of community Elders, Anishinaabe knowledge, and traditional teachings. The community is cautiously interested in developing collaborative, diligent, and culturally respectful partnerships that interface knowledge systems. Benefit sharing means the joint ownership of intellectual property and financial benefits, developing employment and capacity-building opportunities for community members, and planning products for community use. This thesis offers a community perspective on how NTFPs might be researched, developed and commercialized in joint and mutually beneficial partnerships with a First Nation.
166

Beyond IT and productivity : effects of digitized information flows in the logging industry /

Kollberg, Maria, January 2005 (has links)
Lic.-avh. Linköping : Linköpings universitet, 2005. / På titelsidan felaktiga serieuppgifter.
167

Managerial opportunism and firm performance an empirical test of instrumental stakeholder theory /

Berman, Shawn. January 1998 (has links) (PDF)
Thesis (Ph.D.)--University of Washington, 1998. / Includes bibliographical references (leaves [111]-124).
168

Assessing wild plant vulnerability to over-harvesting refinement of the "Rapid Vulnerability Assessment" method and its application in Huitzilac, Mexico /

Turner, Kate E. January 1900 (has links)
Thesis (M.Sc.). / Written for the Dept. of Geography. Title from title page of PDF (viewed 2008/01/16). Includes bibliographical references.
169

Enzymatic hydrolysis with commercial enzymes of a xylan extracted from hardwood pulp [electronic resource] /

Marais, Susann. January 2008 (has links)
Thesis (M.Eng.(Chemical Engineering))--University of Pretoria, 2008. / Includes bibliographical references.
170

Performance improvements to a fast internally circulating fluidized bed (FICFB) biomass gasifier for combined heat and power plants : a thesis submitted in partial fulfilment for the degree of Master of Engineering in Chemical and Process Engineering, University of Canterbury, New Zealand /

Bull, Doug. January 2008 (has links)
Thesis (M.E.)--University of Canterbury, 2008. / Typescript (photocopy). Includes bibliographical references (p. 194-196). Also available via the World Wide Web.

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