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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.
61

Desafios para implementação do REDD+ no Brasil: análise das ameaças e oportunidades

Gomes, Guineverre Alvarez Machado de Melo 01 July 2016 (has links)
Submitted by Tatiana Lima (tatianasl@ufba.br) on 2016-10-11T21:17:36Z No. of bitstreams: 1 Gomes, Guineverre Alvarez Machado de Melo.pdf: 3953783 bytes, checksum: d76854e8de457e6bc4fa77c78fe6a562 (MD5) / Approved for entry into archive by Tatiana Lima (tatianasl@ufba.br) on 2017-02-15T19:02:43Z (GMT) No. of bitstreams: 1 Gomes, Guineverre Alvarez Machado de Melo.pdf: 3953783 bytes, checksum: d76854e8de457e6bc4fa77c78fe6a562 (MD5) / Made available in DSpace on 2017-02-15T19:02:43Z (GMT). No. of bitstreams: 1 Gomes, Guineverre Alvarez Machado de Melo.pdf: 3953783 bytes, checksum: d76854e8de457e6bc4fa77c78fe6a562 (MD5) / O mecanismo de Redução de Emissões por Desmatamento e Degradação Florestal (REDD+) surgiu no cenário internacional como uma aposta em enfrentar as mudanças climáticas a partir do setor florestal, um dos importantes setores mundiais de geração de gases de efeito estufa. A lentidão das tomadas de decisão nas Nações Unidas (UNFCCC) fez com que o Mercado de Carbono Voluntário (MCV) se mostrasse como um ambiente mais célere e menos burocrático para desenvolvimento desse modelo. Foi também nesse espaço que outras modalidades de REDD+, além da prescrita na UNFCCC, encontraram espaço para crescer. Contudo, a aprovação das diretrizes internacionais para REDD+ pela UNFCCC em 2013 trouxe questionamentos sobre a harmonização desses dois ambientes, especialmente em países em que eles coexistem, como o Brasil. Isto posto, esta tese parte do seguinte problema de pesquisa: quais os principais desafios para a implementação do REDD+ no Brasil? Assim, objetiva-se, a partir da experiência brasileira, compreender as forças, fraquezas, ameaças e oportunidades para a implementação do REDD+no território nacional. Para tanto, foram definidos os elementos essenciais de REDD+ e empregada uma análise do tipo SWOT para verificar forças, fraquezas, ameaças e oportunidades de cada um dos elementos e de cada uma das modalidades de REDD+. Foram também realizadas pesquisas exploratórias, análise documental e entrevistas. Os resultados encontrados indicam como desafios do REDD+UNFCCC no Brasil posicionar-se sobre as iniciativas subnacionais de REDD+ e aprimorar e coordenar suas estruturas normativa, institucional e tecnológica. Para as atividades-projeto do Mercado de Carbono Voluntário, comprovar a idoneidade do modelo de certificação por terceiros, buscando alternativas para redução dos seus custos, e ampliar e consolidar o envolvimento do setor privado, a geração de cobenefícios e o cumprimento de salvaguardas. Por fim, para o programa jurisdicional brasileiro superar as incertezas sobre sua compatibilidade com o REDD+ nacional e melhorar o arcabouço normativo e institucional de nível subnacional no qual está inserido, para, assim, alcançar o reconhecimento nacional e internacional de seu modelo. / The Reducing Emission from Deforestation and Forest Degradation Mechanism(REDD+) emerged within the international scenario as a bet on tackling climate changethrough the forestry sector, one of the major global industries that generate greenhousegases. The slow pace of decision-making at the United Nations (UNFCCC) has provedthe Voluntary Carbon Market (VCM) to be a faster and less bureaucratic environment forthe development of such model. It was also in this area that other REDD+ arrangements,beside the one prescribed by the UNFCCC, found room to grow. However, the approvalof international guidelines for REDD+ by the UNFCCC in 2013 brought about questionsconcerning the harmonization of these two environments, especially in countries wherethey coexist, like Brazil. That said, this thesis is based on the following researchproblem: what are the main challenges for the implementation of REDD+ in Brazil? Thus,based on the Brazilian experience, the objective is to understand the strengths,weaknesses, threats and opportunities for the implementation of REDD+ in the country.Therefore, the essential elements of REDD+ have been defined and we used a SWOTanalysis to verify strengths, weaknesses, threats and opportunities of each of the elementsand of each REDD+ arrangement. We also held exploratory research, document analysisand interviews. The results indicate that the UNFCCC REDD+ challenges in Brazil arepositioning itself about subnational REDD+ initiatives and improving and coordinatingtheir regulatory, institutional and technological frameworks. As for the Voluntary CarbonMarket activity-project, the challenges are verifying the suitability of the certificationmodel by a third party, seeking alternatives to reduce its costs, and expanding andconsolidating the involvement of the private sector, the co-benefit generation and thecompliance of safeguards. Finally, the Brazilian legal program should overcome theuncertainties regarding its compatibility with the national REDD+ and improve theregulatory and institutional framework, at a sub-national level, in which it is inserted, inorder to achieve national and international recognition for its model.
62

REDD+ no Estado do Pará: a política ambiental climática paraense no contexto nacional e internacional

Amarante, Caroline Bastos do January 2013 (has links)
Submitted by WALDERY DE MELO WEYLL WEYLL (waldery@museu-goeldi.br) on 2015-07-15T18:51:39Z No. of bitstreams: 1 Dissertacao_REDDEstadoPara.pdf: 1892768 bytes, checksum: 714d945a028d54d616249175a5782d79 (MD5) / Approved for entry into archive by Rodrigo Paiva (rodrigopaiva@museu-goeldi.br) on 2015-07-16T14:33:57Z (GMT) No. of bitstreams: 1 Dissertacao_REDDEstadoPara.pdf: 1892768 bytes, checksum: 714d945a028d54d616249175a5782d79 (MD5) / Made available in DSpace on 2015-07-16T14:33:57Z (GMT). No. of bitstreams: 1 Dissertacao_REDDEstadoPara.pdf: 1892768 bytes, checksum: 714d945a028d54d616249175a5782d79 (MD5) Previous issue date: 2013 / A inserção do mecanismo de Redução de Emissões por Desmatamento e Degradação Florestal (REDD) no contexto do ordenamento jurídico-normativo e institucional do Estado do Pará, é a temática abordada pelo presente trabalho. A metodologia aplicada na presente pesquisa se baseou em duas técnicas de coletade dados, quais sejam o levantamento documental e a aplicação de questionário estruturado junto aos órgãos estaduais responsáveis pela articulação e implementação desse mecanismo no território paraense. De recente surgimento no cenário das discussões internacionais sobre meio ambiente e mudanças climáticas globais, levadas a efeito no âmbito da Convenção-Quadro das Nações Unidas sobre Mudança do Clima, o REDD se apresenta como proposta de desmatamento evitado para os países em desenvolvimento, cuja preservação do patrimônio florestal, em vista dos potenciais benefícios para a mitigação do aquecimento global, deveria ser compensado por meio da remuneração de indivíduos, comunidades, projetos e países, conforme a proposta originalmente lançada no ano de 2005, durante a COP 11, realizada em Montreal, no Canadá. Nesse contexto, o Estado do Pará, que encerrou o ano de 2012 como líder nos números de desmatamento entre os Estados da Amazônia Legal, ainda em 2009 previu a inserção do mecanismo de REDD no quadro jurídico regulatório e institucional paraense como parte das ações do (Decreto Estadual nº 1.697/2009). Decorrida a primeira fase de execução do Plano, qual seja o interstício de agosto de 2009 a agosto de 2012, verificou-se que osprocessos decisórios para implementação do mecanismo não avançaram, em que pese a existência de projetos dessa natureza em curso no território paraense, e o avanço dos demais Estados amazônicos quanto à temática, cujos arcabouços normativos já dispõem de políticas públicas atinentes ao REDD e REDD+ e importantes medidas adicionais correlatas, a exemplo da regulação sobre pagamento de serviços ambientais e políticas estaduais sobre mudanças climáticas.
63

Commodifying forest carbon : how local power, politics and livelihood practices shape REDD+ in Lindi Region, Tanzania

Scheba, Andreas January 2014 (has links)
International efforts to promote REDD+ (reducing emissions from deforestation and forest degradation, and the role of conservation, sustainable management of forests and enhancement of forest-carbon stocks) have enjoyed widespread support in climate negotiations. While proponents of this ‘payments for ecosystem services’ approach proclaim win-win benefits, others critique this commodification of forest carbon for contributing to social and environmental injustices that will undermine conservation and development in the longer-term. In this dissertation I respond to these concerns by critically examining how REDD+ initiatives emerge in the context of Lindi Region, Tanzania. I specifically investigate how REDD+ initiatives interact with local livelihood practices, local forest governance and the drivers of land use in order to interrogate the mechanism’s contribution to local development. I conducted ethnographic fieldwork in two villages, both characterised by relatively large forest areas and ‘shifting cultivation’, where different REDD+ projects are underway. In total I stayed in Tanzania for 11 months and applied qualitative and quantitative methods that resulted in 116 recorded interviews, one focus group discussion, innumerable journal entries from ethnographic interviewing and participant observation, 118 household surveys and data from document analysis. Drawing on debates within international development and neoliberalisation of nature I conceptualise REDD+ initiatives as processes promoting ‘inclusive’ neoliberal conservation. In doing so I point at the inherent contradictions of this mechanism that aims to combine a neoliberal conservation logic with inclusive development objectives. I empirically examine local livelihood practices to question popular notions of land use and argue that REDD+ initiatives must grapple with poverty, intra-village inequality and villagers’ dependence on land for crop production to contribute to inclusive economic development. I follow up on this argument by discussing the importance of material and discursive effects of REDD+ initiatives to the livelihoods of poor, middle income and wealthy households and to forest conservation. I then link these effects to an examination of how power and politics shape the implementation of REDD+ initiatives on the ground, specifically discussing the technically complex and politically contested process of territorialisation and the local practices of community-based forest management. I illustrate how seemingly technical REDD+ initiatives are inherently political, which gives them the potential to contribute to local empowerment. At the same time I question naïve assumptions over community conservation and good governance reforms by showing in detail how community-based forest management institutions are practiced on the ground and how this affects benefit distribution within the villages. My last empirical chapter examines how Conservation Agriculture is introduced in the villages as the best way to reconcile agricultural development with forest protection. I specifically discuss the role of social relations in shaping the dissemination and adoption of this new technology in rural Tanzania. Throughout this thesis I argue that local livelihood practices, power struggles and politics over land and people shape how REDD+ initiatives, as inherently contradictory processes of ‘inclusive’ neoliberal conservation, emerge on the ground and I empirically show what this means to different forest stakeholders.
64

Dispersal and habitat use of juvenile brown trout (Salmo trutta) following egg stocking : -A case study in the river Rotälven, Sweden / Spridning och habitatval av juvenil öring med ursprung från romutsättningar : -En fallstudie i Rotälven

Larsson, Jonathan January 2022 (has links)
Egg stocking in rivers and streams is a common measure to support and re-introduce salmonid populations. To ensure the success of egg stocking programs, knowledge of the early life stages of juveniles including dispersal ability and habitat preferences of fry is a prerequisite. This study was conducted to investigate downstream dispersal patterns and habitat use of young of the year brown trout in a mid-sized, channelized, boreal river in Sweden. Eyed trout eggs were stocked in February of 2021. During August of the same year, 2-3 months after emergence, trout were sampled by electrofishing within 1 km downstream of the stocking sites and each individual point of capture was recorded by GPS. In addition, data on riverbank slope, shoreline irregularity, stream bed substrate, water velocity and water depth were collected for each of the sampling sections. The results showed that trout fry were distributed throughout the 1 km long sampled sections and that the density of fry did not increase towards the stocking points. The observed variation in the distribution of trout fry was best explained by the riverbank slope. Approximately twice as high fry densities were found in reaches with gentle compared to medium and steep bank slopes. The differences are suggested to be an effect of 1) stream marginal water velocity differences during high flows affecting fry occupancy, and 2) that gentle slopes were often accompanied by shallow water, preferred by fry. These findings may provide helpful knowledge for fisheries managers to optimize the outcome of egg stocking and river restoration activities regarding fry recruitment. / Romutsättning i vattendrag är en vanlig åtgärd för att stärka och återetablera populationer av laxartade fiskar. För att lyckas med romutsättningar krävs kunskap om ynglens spridningsförmåga och habitatpreferenser. Denna studie genomfördes för att undersöka spridningsmönster och habitatval av ensomrig öring i en medelstor kanaliserad älv i Sverige. Ögonpunktad rom sattes ut i februari 2021. Under augusti samma år, 2-3 månader efter att ynglen lämnat lekgruset elfiskades 1 km långa sträckor direkt nedströms utsättningsplatserna. De fångade individernas position registrerades med GPS. Data över strandkantens lutning, strandzonens flikighet, bottensubstrat, vattenhastighet och djup samlades in för varje elfiskesträcka. Resultatet visade att öringyngel spridit sig över hela de 1 km långa elfiskesträckorna, och att tätheterna av yngel inte ökade med minskat avstånd till utsättningspunkterna. Den observerade variationen i fördelningen av öringyngel förklarades bäst av strandkantens lutning. Ungefär dubbelt så hög täthet av yngel förekom i sträckor med flack jämfört med medel och brant lutning. Skillnaderna föreslås vara en effekt av 1) skillnader i vattenhastighet under höga vattenflöden som påverkar ynglens möjligheter till att bibehålla sin position i habitatet, och 2) att flack lutning av strandkanten ofta åtföljdes av grunt vatten vilket föredras av yngel. Dessa upptäckter kan bidra med värdefull kunskap för att optimera romutsättningar och restaureringar i avseende på rekrytering av årsyngel.
65

REDD+ Projects Providing Sustainable Livelihoods for Rural Communities?  An Assessment of Voluntary Carbon Offsetting Projects in Peru and Tanzania

Tapping, Laura January 2020 (has links)
The voluntary carbon market, the area of focus for this thesis, developed alongside the compliance carbon market when individuals and organisations elected to compensate for their CO2 emissions. The steep growth in demand for voluntary carbon offset credits stemmed from the 2015 Paris Agreement. Climate issues were firmly on the agenda and carbon offsetting was viewed as a way for countries to meet their carbon reduction targets in efforts towards mitigating climate change. Since then, there has been a shift to natural climate solutions, namely forestry and land use carbon projects.  The ideal host location for such projects oftentimes have an existing, usually poor, population.  Project developers claim to help such populations by providing community benefits such as job creation and improved agricultural practices.  However, there is a gap in the research which focuses on the future of these communities after the projects, and how sustainable the benefits are.  This thesis examines the community benefits of two REDD+ (Reducing Emissions from Deforestation and Forest Degradation) projects: Alto Mayo Conservation Initiative, Peru and Yaeda Valley REDD Project, Tanzania.  Interviews with project developers are cross-referenced with project documents and other available sources to analyse the sustainability of the livelihood impacts.  The results show that the positive impacts of voluntary carbon projects on a local community can be sustained post-project. Overall, the well-being of community members can improve, as can decision-making skills and capacity levels.  Project participants can become more adaptable to shocks as their livelihoods have diversified and they have stronger links with international markets.  This link with international markets, however, can also become a barrier to livelihood benefits. As local people become reliant on market demand and project funds, they move away from subsistence farming and when demand drops, they may find it hard to prosper.  Additionally, there is a risk that following the departure of the project and its developers, more malevolent and powerful parties may move into the area.  To overcome these barriers, livelihood diversification opportunities need to be strengthened and land tenure issues clarified.
66

Potential for synthesis between REDD+ and community forest management as understood through the lens of global political ecology

Chretien, Jonathon 31 January 2013 (has links)
Global climate change is one of the defining issues of the 21st century. The phenomenon of natural climate variation being pushed beyond normal ranges has been fueled largely by industrial activities and those which support them (i.e. land-use change and the over-exploitation of natural resources). The urgency is well established with reports demonstrating an increased occurrence of rare, highly damaging weather events, and shifts in the natural range of species. The necessity of action on climate change has resulted in the development of novel global initiatives designed to address the problem across global and regional scales. Reducing Emissions from Deforestation and forest Degradation (REDD+) is emblematic of this new wave of conservation strategy. It brings together parties which are often seen as opposed on environmental issues in collaborative environmental practise. This thesis explores the development of REDD+ as an effective and equitable solutions to this problem. REDD+ is a policy architecture designed for global deployment, the success of which will depend largely upon the engagement and involvement of local community groups. Community forest management (CFM) may inform the REDD+ design process, and enhance both land-use strategies by way of synergy. The pathway to that point is, however, uncertain and marred with potential pitfalls. This thesis uses the instructive and critical lens of political ecology to assess the potential for integrating greater CFM elements into the REDD+ policy structure. It explores how the narratives of CFM and REDD+ clash at discursive levels, while also identifying elements of each which may make them mutually beneficial. The thesis finds that much of the conflict between positions on REDD+ are the result of contrasting environmental understandings, some of which are informed by negative experiences with past environmental conservation initiatives. Greater community-centric attributes may assist in improving the local and regional acceptability of REDD+ projects by appealing to the “alternative” values of forest-dependent peoples. Some suggested policy modifications are made to improve the overall design of REDD+ to be inclusive of the concerns of forest user groups, and potential areas for future research projects are discussed. / Thesis (Master, Environmental Studies) -- Queen's University, 2013-01-28 14:57:55.951
67

Détection de points chauds de déforestation à Bornéo de 2000 à 2009 à partir d'images MODIS

Dorais, Alexis 01 1900 (has links)
Ce travail s’inscrit dans le cadre d’un programme de recherches appuyé par le Conseil de recherches en sciences humaines du Canada. / Les forêts de Bornéo sont inestimables. En plus d’une faune et d’une flore riche et diversifiée, ses milieux naturels constituent d’efficaces réservoirs de carbone. En outre, la matière ligneuse qui y est abondante fait l’objet d’une exploitation intensive. Par contre, c’est le potentiel agricole de l’île qui crée le plus d’enthousiasme, principalement en ce qui concerne la culture du palmier à huile. Pour tenter de mieux comprendre et surveiller le phénomène, nous avons développé des méthodes de détection de la déforestation et de la dégradation des forêts. Ces méthodes doivent tenir compte des caractéristiques propres à l’île. C’est que Bornéo est abondamment affectée par une nébulosité constante qui complexifie considérablement son observation à partir des satellites. Malgré ces contraintes, nous avons produit une série chronologique annuelle des points chauds de déforestation et de dégradation des forêts pour les années 2000 à 2009. / Borneo’s forests are priceless. Beyond the richness and diversity of its fauna and flora, its natural habitats constitute efficient carbon reservoirs. Unfortunately, the vast forests of the island are rapidly being cut down, both by the forestry industry and the rapidly expanding oil palm industry. In this context, we’ve developed methods to detect deforestation and forest degradation in order to better understand and monitor the phenomena. In doing so, the peculiarities of Borneo, such as the persistent cloud cover, had to be accounted for. Nevertheless, we succeeded in producing a time series of the yearly forest degradation and deforestations hotspots for the year 2000 through the year 2009.
68

Translating climate change policy : the case of REDD+ in Ghana

Arhin, Albert Abraham January 2017 (has links)
The policy of Reducing Emissions from Deforestation and Degradation (REDD+) has been promoted at the global level as an innovative approach to reduce forest loss that contributes to about one-fifth of global climate change. My dissertation brings together theories of policy processes and political ecology to examine REDD+ at three levels: global, national and local. It focuses on how this global climate policy is translated from one geographical scale to another and from policy into practice. The analysis of how REDD+ is transformed through this process provides insights into the extent to which REDD+ is likely to achieve its aims of reducing forest loss and mitigating global climate change. The national and local cases are drawn from Ghana, West Africa. The study is mainly qualitative, and employs semi-structured interviews, focus group discussions, key informant interviews, oral histories, participatory activities, and document analysis, as methodologies. At the global scale, I explore how REDD+ became a global climate policy and the range of global expectations that supported its rise to prominence. I argue that REDD+ became prominent because of three main strategies employed by its proponents: first, the re-introduction of the role of forest-sector emissions to climate change negotiations; second, the setting-up of financial schemes to attract and mobilise support for REDD+; and third, the establishment of safeguards mechanisms to address criticisms raised by stakeholders that opposed REDD+. At the national level, I examine how the policy processes related to REDD+ were translated from the global scale to the national context of Ghana. I critically examine the narratives around how deforestation was understood and the range of actions that were subsequently identified as options for achieving REDD+ outcomes. I show that REDD+ has created opportunities for promising reforms and structures on forest management in Ghana; yet it is unlikely to achieve its intended objectives because of (i) problems with the way the narrative has framed the causes of deforestation; (ii) a failure to fully address long-standing problems with tenure and benefit-sharing frameworks; and (iii) the centralisation of revenue generation that is limiting local-level implementation of plans. At the local levels, I focus on how two REDD+ pilot projects were unfolding. Similar to the national level, my analysis reveals that the projects have employed questionable narratives about the ways deforestation is produced in both cases. In addition, the solutions designed to address deforestation were found to contain misplaced assumptions that undermine the prospects of both projects to achieve their intended objectives. The research highlights the messy processes of translation of global climate policies such as REDD+ as they move from one scale to another, and from policy to practice. The study contributes to understanding how problematic narratives, misguided assumptions, and diverse interests, create gaps between the policy ideas and their implementation as global climate policy is translated from one geographical scale to another.
69

Fóruns virtuais de REDD: análise da função comunicativa na construção de políticas orientadas por organizações da sociedade civil

TAKETA, Brenda Vicente 04 July 2012 (has links)
Submitted by Edisangela Bastos (edisangela@ufpa.br) on 2013-04-23T19:52:55Z No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_ForunsVirtuaisREDD.pdf: 3505109 bytes, checksum: 4fadb99f3b1531732855655a1b0e61f1 (MD5) / Approved for entry into archive by Ana Rosa Silva(arosa@ufpa.br) on 2013-04-25T12:43:47Z (GMT) No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_ForunsVirtuaisREDD.pdf: 3505109 bytes, checksum: 4fadb99f3b1531732855655a1b0e61f1 (MD5) / Made available in DSpace on 2013-04-25T12:43:47Z (GMT). No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_ForunsVirtuaisREDD.pdf: 3505109 bytes, checksum: 4fadb99f3b1531732855655a1b0e61f1 (MD5) Previous issue date: 2012 / Frente a evidências científicas que apontam o desflorestamento da Amazônia como fator preponderante na liberação de gases do efeito estufa à atmosfera e na consequente intensificação das mudanças climáticas globais, organizações não-governamentais e ambientalistas criaram fóruns temáticos sobre a Redução de Emissões por Desmatamento e Degradação florestal (REDD). Sob a premissa de intercambiar informações e promover a articulação e o debate público, essas iniciativas reúnem diferentes atores sociais, sob a coordenação de organizações da própria sociedade civil, tendo a internet como principal lugar de referência. Considerando a perspectiva democrática aberta pela noção habermasiana de esfera pública e com base em critérios fundamentais à publicidade social, relacionados às funções de dar visibilidade e promover o debate público, a análise de quatro espaços virtuais permitiu uma reflexão sobre a forma contemporânea de atuação das organizações não-governamentais ambientalistas e as potencialidades de atuação política trazidas por novas Tecnologias de Informação e Comunicação (TIC), ainda não apropriadas de forma plena ou efetiva por esse e outros setores da sociedade. Os resultados da pesquisa apontam que, na prática, tais fóruns atendem satisfatoriamente a nenhuma das funções: não esclarecem os usuários quanto ao assunto e tão pouco são capazes de fomentar discussões que resultem em desdobramentos em prol da coletividade. Isso resulta na perda da qualidade democrática a que se propõem e ainda reforça o efeito do “silenciamento” sobre as populações locais, que veem os seus anseios e necessidades representados por essas ONGs sem que essas entidades sejam real e necessariamente representativas de seus interesses. / In the face of evidence that point the deforestation of the Amazon as a major factor in the release of greenhouse gases to the atmosphere and the consequent intensification of global climate change, non-governmental organizations and environmentalists have created thematic forums on Reducing Emissions from Deforestation and forest Degradation (REDD). Based on the premise of exchanging information and promote cooperation and public debate, these initiatives meet different social actors, under the coordination of organizations of civil society, having the Internet as the primary place of reference. Considering the democratic perspective opened by the habermasian notion of public sphere and based on criteria that are fundamental to social advertising, related to the functions of visibility and promote public debate, the analysis of four virtual spaces tends to permit a reflection on the contemporary form of activity of non-governmental environmental organizations and the potentialities of political action brought by new Information and Communication Technologies (ICT), but not yet appropriate so full or effective by this and other sectors of society. The research results indicate that, in practice, such forums satisfactorily meet any of the functions: users do not clarify on the matter and so little are able to foster discussions that result in outcomes in favor of the collective. This results in the loss of democratic quality that they propose and even enhances the effect of "silencing" on the local population, who see the desires and needs represented by these NGOs, entities not really or necessarily representative of their interests.
70

Détection de points chauds de déforestation à Bornéo de 2000 à 2009 à partir d'images MODIS

Dorais, Alexis 01 1900 (has links)
Les forêts de Bornéo sont inestimables. En plus d’une faune et d’une flore riche et diversifiée, ses milieux naturels constituent d’efficaces réservoirs de carbone. En outre, la matière ligneuse qui y est abondante fait l’objet d’une exploitation intensive. Par contre, c’est le potentiel agricole de l’île qui crée le plus d’enthousiasme, principalement en ce qui concerne la culture du palmier à huile. Pour tenter de mieux comprendre et surveiller le phénomène, nous avons développé des méthodes de détection de la déforestation et de la dégradation des forêts. Ces méthodes doivent tenir compte des caractéristiques propres à l’île. C’est que Bornéo est abondamment affectée par une nébulosité constante qui complexifie considérablement son observation à partir des satellites. Malgré ces contraintes, nous avons produit une série chronologique annuelle des points chauds de déforestation et de dégradation des forêts pour les années 2000 à 2009. / Borneo’s forests are priceless. Beyond the richness and diversity of its fauna and flora, its natural habitats constitute efficient carbon reservoirs. Unfortunately, the vast forests of the island are rapidly being cut down, both by the forestry industry and the rapidly expanding oil palm industry. In this context, we’ve developed methods to detect deforestation and forest degradation in order to better understand and monitor the phenomena. In doing so, the peculiarities of Borneo, such as the persistent cloud cover, had to be accounted for. Nevertheless, we succeeded in producing a time series of the yearly forest degradation and deforestations hotspots for the year 2000 through the year 2009. / Ce travail s’inscrit dans le cadre d’un programme de recherches appuyé par le Conseil de recherches en sciences humaines du Canada.

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