This research studies variations in biodiesel upon addition of different concentrations of antioxidant and petrodiesel additives. Oxidation onset temperature, oxidation induction time, oxidative stability, thermal stability, crystallization onset temperature and moisture retention properties of the biodiesel, with and without antioxidants have been studied. Antioxidants like BHT, BHA, PrG, Vit E and Vit C were added to the biodiesel during the study. These samples were analyzed using the PDSC, TGA, DSC and TGA-SA instrumentation. The results of this research show an improvement in the OOT, OIT and Oxidative stability of biodiesel with the addition of antioxidants and by blending the biodiesel with different amounts of Petro-diesel. A significant improvement in oxidative stability of biodiesel has been observed with the addition of antioxidants and petrodiesel. There was no significant change noticed in the thermal stability, crystallization and the moisture retention properties of biodiesel. I hope that this research would help improving the oxidative stability of the biodiesel. The results from the analysis made in this study would also be helpful in designing a better antioxidant and aid in improving the present experimental methods for the OIT and thermal analysis.

To assess what factors are driving the exponential growth of farmers’ markets in Kentucky, geospatial and statistical analysis of a database of 121 farmers’ markets was conducted. A statewide survey of market leaders and a case study of a single farmers’ market both identified reasons for growing support of farmers’ markets in Kentucky. Market distribution, vendor levels, and gross sales were mapped against a backdrop of county urban classification, median household income, and education levels. Kruskal-Wallace analysis was used to identify if Kentucky’s rural, micropolitan, and metropolitan markets differ significantly in terms of their age, number of vendors, and market sales. Geospatial analysis indicates that farmers’ markets are more concentrated in metropolitan areas of the Commonwealth. However, statistical analysis reveals that farmers’ markets have been established longer in micropolitan areas of the state. Markets across urban classes have significantly different ages and gross sales, but all markets tend to sustain a similar number of vendors. Population levels appear to have the strongest correlation with the variables studied, although education and household median income also may play a role in farmers' market strength. Market stakeholders believe that markets are gaining popularity as consumers become more aware of food safety and environmental problems in the mass market system. Farmers’ markets are considered an important tool for strengthening the local economy, connecting farmers with consumers, and increasing local availability of fresh and nutritious foods.

Frivilliga avsättningar av skog med höga naturvärden är en viktig del för att nå Miljömålet ”Levande skogar”. Det finns dock tveksamheter om de naturvårdsbiologiska kvalitéerna i dessa avsättningar. Syftet med denna studie var därför att undersöka om den skog som avsätts frivilligt av privata skogsägare är den skogsmark som har de högsta naturvärdena på fastigheten. Vidare studerades också markägarens naturvårdskunnande, utbildningsnivå och attityd till naturvård. Detta kan påverka viljan att avsätta skog frivilligt, hur långsiktig avsättningen blir samt kvalitén på avsättningarna. Studien består av inventeringar på sex skogsfastigheter i Östergötland med frivilliga avsättningar, samt en enkätstudie till skogsägare. Det visade sig att skogsägarna i huvudsak avsatte de bestånd med högst naturvärde på fastigheten. Tre bestånd (en lövskog, en tallskog samt en källmiljö) av totalt 59 hyste högre naturvärde än de frivilligt avsatta. De avsatta skogarnas hade lägre virkestäthet än produktionsbestånden och bestod i större utsträckning av lövskog. Majoriteten av skogsägarna avsatte skogen långsiktigt för kommande generationer. När skogsägarna fick rangordna syftet med sin skogsfastighet prioriterades virke i första hand, naturvård värderades betydligt lägre. En mätning av kunskaper i tillämpad ekologi och artkännedom visade att skogsägarnas kunskaper i regel var bristfälliga när det gällde igenkänning av indikatorarter samt viktiga trädslag för artbevarande. Majoriteten av de som var negativa till att göra frivilliga avsättningar kunde tänka sig att ändra åsikt vid ”skälig ersättning”. Mer omfattande studier behövs för att avgöra om mina resultat var representativa och om de frivilliga avsättningarna verkligen hyser fastighetens högsta naturvärden och lever upp till miljömålet levande skogar. / Voluntarily protected forests with high nature conservation value are an important part of fulfilling the environmental objective "Sustainableforests". The aim of this study was to evaluate if the voluntarily protected forests are those with the highest conservation value for threatened species1 on the estate. Another purpose was to investigate the knowledge in applied ecology among small-scale foresters, their educational level and attitudes towards conservation. The study contains inventories at six different estates in the county of Östergötland and a query targeted to small-scale forest owners. The foresters in my study set aside the areas with the highest conservation values on the estate with few exceptions. Three areas (one deciduous forest, one pine forest and a well) out of 59 had a higher conservation value than the areas set aside voluntarily. The voluntarily protected forests had less timber density than the productive areas and contained more deciduous forest. A majority of the foresters voluntarily protected forests where intended to remain for future generations. As part of my study the foresters also got to rank the purpose of the forest estate. Timber got the highest rank while nature conservation got a considerable lower rank. A measurement of the small-scale forester's knowledge in applied ecology and indicator species showed that their knowledge often was inadequate regarding indicator species. A majority of those negative to voluntary forest conservation areas on their own estate were willing to change view if they were given adequate economic compensation. 1 according to the Swedish Red list

Over the last two decades, there have been increasing concerns about environmental degradation and its consequences on the long-term sustainability of socio-economic systems around the world. The publication of the report of the Club of Rome in 1972, (Meadows et al. 1972) focused on the issue of limits to growth. Since then, there has been a profusion of literature and general models have been developed to address the causes of environmental degradation and the unsustainability of current patterns of growth (Ehrlich and Ehrlich 1970; 1990). Essentially these models used parameters that included population growth, consumption levels and aspects of technology, and their effects on the environment. While these models and studies were at a macro level that helped focus attention on the patterns of growth and their unsustainability, they did not provide insights into the mechanisms that were driving ecological change, nor suggest alternative models of growth. An entry point into the current study is to understand the mechanisms that drive ecological change. Motivated by concerns for environmental degradation, and the need to understand the mechanisms that drive ecological change, the study is situated in the academic domain of studies on human-nature interactions. The complex nature of interactions between human groups with their environment and their dependence on the situational context, requires that such studies be at a regional and local scale for which sufficient detail is available. This particular study is situated in the Nilgiri hills in the Western Ghats of Southern India for which such detailed information is available. The study reconstructs the ecological history of the Nilgiri area during the last 200 years, and from this laboratory of human-nature interactions, attempts to derive general patterns.

<p>In most developing countries, forest resources are a major source of livelihood for forest dwellers. Forests provide fuel wood, farm products, meat, timber and plants of high medicinal value, including Prunus africana. The collection of medicinal plants is also an important source of cash income for some forest communities, and widely relied on to cure illnesses (Poffenberger, 1993). Because of this, the poor forest dwellers in particular are forced to exert pressure on their surrounding environment to make ends meet. Indiscriminate exploitation of forest resources has cost some forest dwellers dearly as they are now experiencing marked reduction of wildlife, forest cover, soil fertility and most importantly water supply, which is a key to life. Prunus africana has a very high economic and medicinal value locally as well as internationally. The exploitation of this species is a very profitable activity in most parts of Africa where it occurs, including the Mount Cameroon region. In recent years, most youths and young men in the Mount Cameroon region have seemingly become less interested in their usual income generating activities (farming, hunting, etc.) because of reduced productivity and have taken up Prunus harvesting as their major source of income. Increase in demand for this species by the French pharmaceutical company (Plantecam), weak institutional capacity to control exploitation, uncontrolled access into the forest, scramble for diminished stock by legal and illegal exploiters, destruction of wild stock by unsustainable practices, and insufficient regeneration of the species in the past have almost driven this species to extinction in certain parts of Cameroon and made it severely threatened in others. Prunus africana is presently threatened with extinction in the entire Mount Cameroon region. In response to this, the Mount Cameroon Project (MCP) and the Ministry of Environment and Forests (MINEF) helped some communities (Bokwoango and Mapanja) in the Mount Cameroon region to form Prunus africana harvesters’ unions with the aim of preserving the resource and improving the socio-economic benefits. The principal aim of the Bokwoango Prunus africana harvesters’ union is to ensure sustainable exploitation of Prunus africana while saving money for important development projects for individual members, their families and the entire community. This piece of work highlights the different facets of Prunus africana management in Cameroon in general and the Bokwoango community in particular. The study examines the socio-economic impact of Prunus africana management in the Bokwoango community and shows specifically the management role played by the Bokwoango Prunus africana harvesters’ union to reduce the rate of exploitation of Prunus africana and also to ensure benefit sharing of the earnings from sales of Prunus bark. It at the same time brings out the constraints encountered by harvesters as well as the opportunities that can make the union become more viable to the socio-economic development of the Bokwoango community. Results of this study show that for the short period that the Bokwoango Prunus africana harvesters’ union has existed, the socio-economic changes in this community are encouraging if one compares the present situation with that before the formation of the union. Most importantly, there has been increased awareness on the great need to conserve not only the threatened Prunus africana species but also other threatened plant and animal species in the region through sustainable hunting, harvesting and regeneration. Some proposals are made for efficient natural resource management and improvements on livelihood through alternative income generating activities. The study ends with recommendations for policy and institutional reforms as well as suggestions for further research in sustainable management of Prunus africana.</p>

The goal of this dissertation was to contribute to our understanding of the relationship between supply chain structure and the pursuit of a sustainability-driven corporate strategy. The literature indicates that in order to pursue a sustainability-focused strategy, an increased level of integration across the supply chain is required. However, there are also industry-level dynamics that impact observed levels of vertical integration. That is, some industries are naturally more integrated than others based on the maturity level of the industry. Thus, some firms may experience opposing forces regarding their sourcing strategies once they choose to pursue a sustainability-focused strategy. To explore this potential tension, it is first necessary to objectively measure vertical integration. Several methods for measuring vertical integration exist; however, all of these methods rely exclusively on economic data. These measures might overlook other forms of integration that might be enacted, such as the development of stronger social ties. Thus, this research will seek to utilize a novel method that makes use of social network analysis to assess integration among firms in a supply chain along social dimensions. This dissertation 1) determined the correlation between having a vertically-integrated organizational structure and pursuing a sustainable supply chain strategy by identifying if sustainability-focused companies (SFCs) have a more vertically-integrated organizational structure than their counterparts that are not pursuing such strategies, 2) examined the evolution of supply chain structure as a company becomes more environmentally, economically, and socially sustainable over time, and 3) defined the social ties between SFCs and their first- and second-tier suppliers to understand if they develop stronger social ties as a potential substitute for pure vertical integration. This dissertation is comprised of four main parts. In the first part of the dissertation, I compared three recently developed vertical integration indices based on consistency and ease of measurement. The three vertical integration indices studied were empirically tested on companies in the U.S. Medical Devices Industry and the limitations of each are discussed. Our analysis suggested adoption of the Fan and Lang's method. In the second part, I examined the vertical integration level of environmentally sustainable and non-sustainable companies. I empirically examined the vertical integration level of 144 sustainability-focused companies in 9 different industries. The results demonstrate that sustainability-focused companies in the Medical Devices Industry and the Industrials Industry tend to have more vertically integrated organizational structures than their industry competitors that are not pursuing such a strategy since these two industries are production oriented and they have closer relationships with their suppliers. In the third part, the objective was to understand how the organizational structure of sustainability-focused companies changes over time as the companies become more environmentally, economically, and socially sustainable. I applied trend analysis to the sustainability and vertical integration level of the companies. Our sample consisted of 10 sustainability-focused companies from the industrials industry. I used the content analysis of annual reports to calculate sustainability development scores, and applied the Fan and Lang's method to determine the vertical integration level of the companies. The study results demonstrated an increasing trend in both vertical integration and sustainability development of industrial industry companies over a 15-year of period. Furthermore, the companies became more vertically integrated as their environmental, economical, and social sustainability increased. Finally, in the fourth part, I developed and empirically tested a theoretical model that examines the supplier relationships of sustainability-focused companies (SFCs) to understand if these relationships are substitute to a vertically integrated organizational structure. Furthermore, I tested if SFCs are more socially connected to their suppliers compared to non-sustainable companies (non-SFCs). An online survey instrument was utilized for data collection. The empirical findings of path analysis demonstrated that SFCs establish long term relationships, collaborate, transfer know-how and experience, and create strong-ties with their first and second-tier suppliers to have an organizational structure that is substitute to a pure vertical integration. Findings further revealed that SFCs are connected to their first and second tier suppliers with stronger social ties compared to non-SFCs. Results support the natural transaction cost economics and natural resource based perspectives. Our study results should be useful to researchers and managers who are interested in corporate sustainability behavior.

Currently, there is widespread debate regarding the overall status of the world's fisheries, with some researchers projecting their total collapse in only a few decades, and others concluding the situation is not quite as bleak. Additional debates include what strategies should be used to manage fisheries at various scales, and further research is needed to determine which strategies are most appropriate for use in particular situations and locales, as context is critical. Recently, prominent common pool resources scholars have expressed the need for ethnographic approaches to studying resource management institutions in order to move beyond the current focus of simply identifying the factors and conditions that lead to the self-organization of resource users and long-term sustainability of management institutions. These authors describe the need for examining the larger context in which management institutions exist and taking various historical, political, and sociocultural factors into account when examining common pool resources. This dissertation is a response to that request. This research is the result of over 20 months of ethnographic research in St. Croix, United States Virgin Islands (USVI). Drawing on research in political ecology and building on anthropological critiques of common pool resource institutions, I describe the historical, social, and political factors that influence how fisheries management occurs at the federal and territorial levels, and how commercial fishers, managers, and other stakeholders experience and participate in multi-scale management processes. Ethnographic data suggest that there are a variety of historical, social, and political factors that influence how commercial fishers, managers, and other stakeholders perceive the federal fisheries management process, the extent of their participation in that process, as well as interactions within and between stakeholder groups. Additionally, the mismatch that exists between the centralized management structure of the US federal system and the small-scale, multi-method nature of St. Croix's fishery creates a complex management environment in which few stakeholders participate.

Successful intercultural natural resource management collaboration is challenged by divergent worldviews and power disparities. Studies of non-intercultural collaboration efforts demonstrate that good outcomes emerge when procedural conditions are met, such as fostering open and high-quality deliberations, use of interest-based bargaining techniques and collective definition of the scope of the process. The applicability of these procedural conditions to intercultural collaboration efforts, such as negotiations between Aboriginal people, government resource managers and sustainable forest license holders, has not been explored. The aim of this thesis is to examine the outcomes and factors influencing two intercultural collaborations in the northeast region of Ontario. Semi-structured interviews with collaboration participants, negotiation meeting minutes and draft agreements are used as data sources. Following a general inductive coding approach and using QSR NVivo 2, the analysis of outcomes in both cases highlights improvements in relationships, increased understanding among the parties and the gradual definition of the scope of the negotiation. The findings also demonstrate that several barriers, including a lack of clear policy and legislative framework for collaboration and different definitions of the problem discourage intercultural collaboration. In one negotiation process, frequent and high quality deliberations, using an interest-based negotiation approach, and efforts to mutually define the scope of the negotiation prior to substantive negotiation do not overcome these systemic barriers to collaboration. However, in another negotiation process, the social and relational characteristics of the community and participants do contribute to the parties recognizing their interdependence, focusing on shared goals and undertaking joint action. This research demonstrates that the development of shared goals and acknowledgement of divergent problem definitions are more important to intercultural collaboration success than the development of improved relationships and establishing a mutually acceptable scope prior to collaboration. In the absence of a supportive legislative basis for the distribution of forest decision-making authority and responsibilities, this understanding of how Aboriginal, government and forest industry participants can collaborate is useful for developing more effective and equitable intercultural collaboration.

Successful intercultural natural resource management collaboration is challenged by divergent worldviews and power disparities. Studies of non-intercultural collaboration efforts demonstrate that good outcomes emerge when procedural conditions are met, such as fostering open and high-quality deliberations, use of interest-based bargaining techniques and collective definition of the scope of the process. The applicability of these procedural conditions to intercultural collaboration efforts, such as negotiations between Aboriginal people, government resource managers and sustainable forest license holders, has not been explored. The aim of this thesis is to examine the outcomes and factors influencing two intercultural collaborations in the northeast region of Ontario. Semi-structured interviews with collaboration participants, negotiation meeting minutes and draft agreements are used as data sources. Following a general inductive coding approach and using QSR NVivo 2, the analysis of outcomes in both cases highlights improvements in relationships, increased understanding among the parties and the gradual definition of the scope of the negotiation. The findings also demonstrate that several barriers, including a lack of clear policy and legislative framework for collaboration and different definitions of the problem discourage intercultural collaboration. In one negotiation process, frequent and high quality deliberations, using an interest-based negotiation approach, and efforts to mutually define the scope of the negotiation prior to substantive negotiation do not overcome these systemic barriers to collaboration. However, in another negotiation process, the social and relational characteristics of the community and participants do contribute to the parties recognizing their interdependence, focusing on shared goals and undertaking joint action. This research demonstrates that the development of shared goals and acknowledgement of divergent problem definitions are more important to intercultural collaboration success than the development of improved relationships and establishing a mutually acceptable scope prior to collaboration. In the absence of a supportive legislative basis for the distribution of forest decision-making authority and responsibilities, this understanding of how Aboriginal, government and forest industry participants can collaborate is useful for developing more effective and equitable intercultural collaboration.

Local perceptions and livelihood strategies have in this study been examined through extensive fieldwork in two villages in rural Pondoland in the former homeland Transkei in South Africa’s Eastern Cape Province. Using a bottom-up perspective, changes in livelihoods and the processes involved in choosing between and combining various types of livelihood activities are analysed. The study also looks at specific South African policies, targeted at poverty relief and restriction of natural resource use, from the local perspective and points at communication problems between the national and local levels. Livelihoods in Transkei are today often conceptualised as consisting of subsistence agriculture combined with monetary incomes in the forms of state pensions and remittances from migrant labourers. This view is challenged by the results of the present study, showing that local jobs are the major components of livelihoods in the studied villages. Informal jobs are stressed as constituting an important, and perhaps previously underestimated, part of local job opportunities. While pensions also do make important contributions to livelihoods, the significance of agriculture, livestock keeping and various forms of natural resource use is shown to be relatively low. Key insights are that livelihood activities in rural Transkei vary a lot between specific localities, and that important recent changes in livelihoods have taken place. Transkei is furthermore often conceptualised as a region where severe environmental degradation is taking place, a fact that is also contradicted by findings from the study area. In accordance with recent research on an ‘African degradation narrative’, the hopeless and homogenous picture of Transkei as a generally degraded region is questioned. These results are also used to critically examine concepts such as ‘multiple livelihood strategies’ and the tendency to generalise about rural livelihoods across regions, countries or even continents. / Lokala uppfattningar och försörjningsstrategier har i denna studie undersökts genom långvarigt fältarbete och omfattande intervjuer med lokalbefolkningen i två byar i den rurala kustregionen i Pondoland, i Sydafrikas f.d. ‘homeland’ Transkei (idag Östra Kapprovinsen). Under apartheidtiden tvingades Sydafrikas befolkning av afrikanskt ursprung i hög utsträckning att bo i dessa s.k. homelands, vilket anses ha lett till både fattigdom och omfattande miljöförstöring i dessa områden. Transkei konceptualiseras idag därför ofta som ett problemområde, där befolkningen överlever på småskaligt jordbruk, nyttjande av, statliga bidrag och pengar från släktingar som jobbar i storstäder. Denna studie ifrågasätter upprätthållandet av en sådan bild av Transkei, genom att peka på att majoriteten av hushållen i fältområdet idag har lokala jobb. I detta sammanhang har informella jobb en viktig och troligtvis tidigare underskattad roll. Studien pekar också på att försörjningsstrategier är föränderliga och att det finns stora skillnader mellan olika lokaliteter med avseende på olika försörjningsmöjligheter. Många studier i Afrika har på senare tid ifrågasatt antaganden om att olika regioner är generellt degraderade, och visat på att detta ofta kan vara ett narrativ som av olika skäl upprätthålls utan att närmare granskas. Denna studie visar däremot på att miljön i fältområdet inte är generellt degraderad och att lokalbefolkningen inte överutnyttjar naturresurserna. Därmed bidrar studien till att nyansera en ibland alltför homogen och hopplös bild av Transkei som region. Studien granskar också specifika Sydafrikanska policies för naturvård och fattigdomsbekämpning utifrån lokalbefolkningens perspektiv och visar på problematiska kommunikationsbrister mellan nationell och lokal nivå.