This dissertation tests an original hybrid methodology to explore the rapid spread of the idea of human-made climate change that began in the 1950s after the idea had lain dormant for half a century. It describes the 1950s rhetorical events that triggered the idea’s diffusion, then traces how its rhetorical uses gradually gave root to the end-of-thecentury political impasse over how to respond to the societal implications of the idea. The research methodology rests on the simple logic that an idea can only spread by being used in human discourses. It combines traditions of rhetorical historiography with a philosophical view of intellectual history as the cumulative effect of a “natural selection” of ideas and their spread by human individuals over time and geography. It calls for sampling and analyzing rhetorical artifacts in light of the rhetorical situations in which they originate, focusing on how the idea of human-made climate change is used rhetorically in scientific and other discourses. The analyses form the basis of a narrative giving emphasis both to rhetorical continuities and to conversation-changing rhetorical events. They also show how these rhetorical dynamics involve interactions of human communities using or attacking the idea for their communal purposes. The results challenge science-focused understandings of the history of the idea itself and also suggest that the methodology may be more broadly useful. As to the history, the analyses highlight how changes in the rhetorical uses of the idea made possible its 1950s breakout in climate science, then led to uses that spread it into other sciences and into environmentalism in the 1960s, attached it to apocalyptic environmentalism in the 1970s, injected it into partisan politics in 1980s and shaped the political impasse during the 1990s. The data show that the methodology reveals elements of the discourses missed in histories emphasizing the “power of ideas,” suggesting that a focus on the usefulness of ideas may be more fruitful. A focus on rhetorical uses of ideas grounds the causation of intellectual change in human motivation and agency, expressed in material acts that multiply and disperse naturally through communities and populations. / Includes bibliography. / Dissertation (Ph.D.)--Florida Atlantic University, 2016. / FAU Electronic Theses and Dissertations Collection

<p>Plants respond to changes in their local environment and, at the same time, influence the environment at a global scale. The molecular and physiological mechanisms regulating this interaction are not completely understood and this limits our capacity to predict the response of vegetation to future environmental changes. This dissertation combined tools from genomics, physiology, and ecology to examine the response of plants to environmental change. Specifically, it focused on processes affecting carbon and water exchange in forest trees because (1) trees are long-lived species that might face repeated environmental challenges; (2) relatively little information exists about the genes and the molecular mechanisms regulating structural and physiological traits in adult, long-lived woody plants; and (3) forest trees exchange a significant amount of carbon and water with the atmosphere and are therefore major players in the global carbon and water cycles. </p><p>Water flux through forests depends both on environmental conditions (e.g., soil moisture) and on the hydraulic architecture of individual trees. Resistance to xylem cavitation is an important hydraulic trait that is often associated with drought tolerance but potentially at the cost of reduced carbon uptake. The second chapter of this dissertation evaluated the variation in resistance to xylem cavitation, hydraulic conductivity, wood anatomy traits, and leaf gas exchange across 14 co-occurring temperate tree species including both angiosperms and gymnosperms. The relationship between vulnerability to cavitation (ψ₅₀) and hydraulic conductivity within specific organs (i.e. stems and roots) was not significant when considering the phylogenetic association between species. However, even after phylogenetic correction, photosynthetic carbon uptake (A) was positively correlated with both stem and root ψ₅₀, and stomatal conductance (g_s) was strongly correlated with root ψ₅₀ . These results suggest that there is a trade-off between vulnerability to cavitation and water transport capacity at the whole-plant level, and that this functional relationship reflects an adaptive response to the environment. </p><p>Forests are an important component of the global carbon cycle that can be directly impacted by a rise in atmospheric CO₂ concentration.. The third chapter of this dissertation investigated the effects of long-term exposure to elevated CO2 on the gene expression of mature, field-grown loblolly pine trees. Using cDNA microarrays, I compared the expression of 1784 pine transcripts in trees growing under ambient and those under elevated CO₂ at monthly intervals throughout a growing season. Overall, more genes were upregulated than downregulated by elevated CO₂, although the total number of genes differentially expressed varied throughout the season. The pattern of increasing number of differentially expressed genes until the peak of the growing season (July and August) followed by a decrease in that number, matched the seasonal trend of tree growth and photosynthetic response to elevated CO₂ in this species. The seasonal trend also reflected the interaction among multiple abiotic factors intrinsic to field conditions and emphasized the relevance of evaluating the role of genes in their natural environment. Genes consistently upregulated by elevated CO₂ were functionally associated with environmental sensing, cellular signaling, and carbon metabolism, in particular the degradation of carbohydrates through respiration. An increase in carbohydrates degradation is particularly relevant in the context of carbon balance of forest trees because of the potential for enhanced leaf and tree respiration leading to a reduced sink capacity for CO₂. </p><p>Loblolly pine produces several flushes of needles throughout the year each with an average lifespan of 19 months. Each year, two age classes of needles contribute to the annual carbon sequestration of the loblolly pine forest. To address the impact of leaf age on the effects of elevated CO₂ in carbon metabolism regulation, I compared the gene expression profiles from trees under ambient and elevated CO₂ conditions in two needle cohorts: one-year-old and current-year. Differential expression under elevated CO₂ was seven times more frequent in current-year than in one-year-old needles. Despite differences in magnitude, many of the patterns within specific groups of genes were similar across age classes. For instance, there was a trend for downregulation of genes involved in the light-reactions of photosynthesis and those in photorespiration in both age classes, while genes associated with dark respiration were largely upregulated by elevated CO₂ in both cases. The difference between the two cohorts was particularly evident in the group of genes related to energy production (ATP synthesis) and the group associated with carbon partitioning (sucrose and starch metabolism). Because sucrose and starch metabolism categories included many genes known to be important regulators of gene expression and plant physiological processes, this suggests that this stage of carbon metabolism might be an important control point in age-dependent foliar responses to elevated CO₂.</p><p>This dissertation examined both structural and physiological components of plant water and carbon relations (Chapter 2) across different biological scales of organization (whole-plant level in Chapter 2; gene-level response to ecosystem-level changes in Chapters 3 and 4) and reflecting adjustments at distinct temporal scales (life-span of the organism vs. evolutionary selection of traits). An integrative approach was used to advance our understanding of how plants acclimate and adapt to their environment, and to provide a mechanistic framework for predictive models of plant response to environmental change. </p> / Dissertation

Environmental issues increasingly demonstrate local-global linkages in driving forces and effects. Policy responses are initiated at local, national and global levels. The successful management of such cross-level environmental issues involves co-ordinated and co-operative policies and action among stakeholders at several levels of governance. Pesticide use in the South-which is a potential driving force for environmental and health problems-has in this dissertation been analysed in relation to such multilayered governance. The theoretical framework from studies on common property resource (CPR) management is applied, facilitating the cross-level analysis of pesticide use in the South as being a global common. The study looks into problem structuring, risk reduction policies and decisionmaking with respect to pesticide use in the South at the local, national and global levels, with Kenya and Costa Rica as cases for the national and local levels. The degree of common understanding among stakeholders across governance levels on what the problems with pesticide use in the South are and how the problems should be addressed and why, is limited but not entirely absent. Mismatches ininformation flows and knowledge, institutions, and values between governance levels hamper the prospect of establishing multilayered governance. These mismatches can be addressed by giving more attention to the level at which institutions are functional, by involving more stakeholders in the generation of knowledge, and by adopting more inclusive values. One approach to achieve these required changes is to embrace a systems perspective on this issue as a global common, a global environmental concern.

Orientador: Sírio Possenti / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem / Made available in DSpace on 2018-08-23T07:37:58Z (GMT). No. of bitstreams: 1 Freire_AnaPaula_D.pdf: 8230034 bytes, checksum: 9d2532956427e38583d82ff175c27ef3 (MD5) Previous issue date: 2013 / Resumo: Esta pesquisa se propõe a analisar o discurso sobre meio ambiente na imprensa brasileira, com ênfase para o aquecimento global, tendo como principal referência a divulgação, em 2007, do Quarto Relatório do Painel Intergovernamental sobre Mudanças Climáticas (IPCC, na sigla em inglês), o AR-4. À luz da Análise do Discurso (AD) francesa, investigou-se como circulam os discursos científicos e político acerca do tema nos principais veículos impressos do país e em que medida um vai influenciar (n) a tessitura do dizer sobre o outro, numa teia argumentativa que envolve interesses científicos, econômicos e políticos diversos. Uma das questões mais importantes que identificamos na análise do noticiário foi o viés sensacionalista sobre as conclusões do IPCC, com formulações como "apocalipse", "caos", "catástrofe" e outras expressões correlatas. O que o AR-4 apontou como "inequívoco" sobre o aquecimento global, a mídia leu e deu a ler como "irreversível". Outro aspecto relevante diz respeito às tentativas de desacreditar o IPCC, sobretudo no episódio que ficou conhecido como Climagate, e as "previsões erradas" para o derretimento das geleiras do Himalaia. Controvérsias reverberaram também na comunidade científica brasileira. Termos como "alerta" vs "ecoterrorismo" e suas paráfrases, ratificando ou refutando as análises do IPCC, circularam em artigos assinados por renomados cientistas, marcando a presença do ideológico no discurso científico. Discute-se, também, o lugar da ciência nos respectivos enunciados, isto é, como estes se constituem a partir das propriedades de um discurso dito científico, portanto "legitimado", o que pressupõe como estratégia a deslegitimação de outro. A noção de formação discursiva (FD) é fundamental para compreender os diferentes sentidos no funcionamento dos discursos, uma vez que, observando as condições de produção e verificando o funcionamento da memória, pode-se remeter o dizer a determinada FD para tentar entender o(s) sentido(s). Na tarefa de problematizar os vestígios históricos de constituição dos sentidos na análise do corpus, faz-se necessária uma reflexão sobre ciência e divulgação da ciência, via jornalismo, e a noção de objetividade como estratégia para encobrir os interesses que constituem os processos de significação desses discursos. A ciência, como a notícia - e como notícia - também é produzida a partir de interesses econômicos, e é importante discutir quando interessa divulgar a ciência e como se dá essa divulgação na textualização jornalística. Nossa análise conclui que o fulcro da discussão sobre aquecimento global é a questão econômica, balizada principalmente pelo confronto entre países desenvolvidos e países em desenvolvimento. Ainda que a maioria dos países reconheça a necessidade de se estabelecer metas de redução nas emissões de GEE, enquanto os principais emissores se recusarem a assinar acordos globais, qualquer tentativa de negociação será a priori um "fracasso". Os conceitos de língua, linguagem, texto, sujeito, ideologia, discurso, marcas e propriedades do discurso, constituição-formulação-circulação foram fundamentais para subsidiar as considerações teóricas propostas neste trabalho. O corpus se constitui de exemplares representativos da mídia impressa, com ênfase para os veículos de maior circulação e influência no Brasil: Folha de S. Paulo e O Globo, em maior escala, e O Estado de S. Paulo e Veja / Abstract: This work aims at analyzing the discourse on the environment in the Brazilian media, with emphasis on global warming. The main reference is the publicity of the Intergovernmental Panel on Climate Change's fourth report, the AR-4, in February 2007. The objective is to investigate the ways the scientific and the political discourses circulate in the main printed media as well as to verify up to what extent they influence one another, involving scientific, economic and political issues. The French Discourse Analysis (AD) was used as the theoretical reference. One of the most important issues identified was the sensationalist bias on the IPCC's conclusions. Linguistic formulations such as "apocalypse", "chaos", "catastrophe" and other related expressions have been used profusely. What AR 4 pointed as "unequivocal" about global warming, the media read and offered to be read as "irreversible". Another important aspect concerns the attempts to discredit the IPCC, especially in what became known as Climategate and the "wrong predictions" for the melting of Himalayan glaciers. Controversies also reverberated in the Brazilian scientific community. Terms such as "alert" vs "eco-terrorism" and their paraphrases, confirming or refuting the IPCC's analyzes, circulated in articles written by renowned scientists, bringing to light the presence of the political debate in the scientific discourse. We analyzed how these statements appear coming from the so-called scientific discourse, being thus legitimated, which presuppose the delegitimation of the other. It is essential to recover the notion of discursive formation (DF) in order to understand the different meanings in the functioning of the discourses, since by observing the conditions of production and by checking the functioning of memory; one can refer the meaning to a determined FD to try to understand the meaning(s) of what is said. In the task of questioning the historical traces of the constitution of meaning, it is necessary to reflect on the role of science in society and the role of science dissemination, via journalism, and the notion of objectivity as a strategy to cover up the subjectivism and other interests that constitute the processes of signification of these discourses. Science, like the news - and as news - is also produced from economic interests, and it is important to discuss when it is convenient to disseminate science and how it happens. Our analysis concluded that the focus of the discussion on global warming is the economic issue, focused mainly by the confrontation between developed and developing countries. Although most countries recognize the need to establish goals for reducing GHG emissions, while major emitters refuse to sign global agreements, any attempt at negotiation is a priori a "failure". The concepts of language, discourse, text, subject, ideology, marks and properties of discourses and of constitution-formulation-circulation were critical to support the theoretical considerations proposed in this work. The corpus consisted of representative samples of the print media, with an emphasis on groups with the largest circulation and influence in Brazil: Folha de S. Paulo e O Globo, mainly, and also O Estado de S. Paulo e Veja / Doutorado / Linguistica / Doutora em Linguística

Orientadores: Cristiana Simão Seixas, Leila da Costa Ferreira / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciências Humanas / Made available in DSpace on 2018-08-24T10:16:42Z (GMT). No. of bitstreams: 1 Silva_LuzianaGaruanadeSouza_D.pdf: 3965871 bytes, checksum: 13044880e3bd1bec1e1e63efb6a86a22 (MD5) Previous issue date: 2014 / Resumo: Transformações biofísicas nos solos, nos oceanos e na atmosfera provocados por atividades humanas e processos naturais, têm aumentado consideravelmente desde o início do século XX. Estas transformações e mudanças na estrutura e função de sistemas socioecológicos podem ser percebidas por populações humanas. As comunidades de pescadores artesanais de Ubatuba, estado de São Paulo, Brasil, que ainda vivem diretamente dos recursos pesqueiros percebem tais mudanças e têm se adaptado a elas ao longo do tempo, a fim de manter suas subsistências e renda. O conhecimento ecológico local (CEL) a respeito dos sistemas socioecológicos costeiros destas comunidades pode auxiliar na redução da vulnerabilidade e aumento da capacidade adaptativa, em faces de mudanças ambientais globais. Este estudo visa contribuir com informações sobre mudanças ambientais globais, incluindo as mudanças climáticas, bem como seus impactos sobre o ambiente local e as populações humanas, e verificar como populações de pescadores artesanais do litoral norte de São Paulo percebem e se adaptam a tais mudanças. A hipótese considerada neste estudo consiste em que o CEL de pescadores artesanais com relação ao ambiente natural é utilizado para reduzir a vulnerabilidade e aumentar a capacidade adaptativa de comunidades de pesca artesanal costeira frente às mudanças ambientais globais, dentre elas as mudanças climáticas. Os resultados apontam que as comunidades pesqueiras do litoral norte de São Paulo fazem uso do CEL para entender os efeitos das mudanças ambientais nos ecossistemas costeiros, assim como têm capacidade de se adaptarem a tais mudanças ao longo do tempo, diminuindo a vulnerabilidade de sistemas socioecológicos costeiros frente às mudanças ambientais globais. A análise em nível local da percepção de mudanças ambientais e sociais por populações humanas subsidia o entendimento dos efeitos dessas mudanças em ecossistemas complexos e este entendimento pode contribuir para futuros planos de manejo em áreas costeiras brasileiras / Abstract: Biophysical transformations on land, in the oceans and the atmosphere, provoked by human activities and natural processes have increased considerably since the beginning of twentieth century. These changes, with affect the structure and function of coupled socio-ecological systems, are being observed by human society. Coastal fisheries communities of Ubatuba, São Paulo state, Brazil, highly dependent upon fisheries observe such changes and have adapted to them over time in order to maintain communities, livelihood activities and income. The detailed local ecological knowledge (LEK) of these communities regarding coastal socio-ecological systems can help reducing the vulnerability and increasing adaptive capacity, in face of global environmental change. This study contributes with knowledge global environmental change, the impacts on the local environment and human beings and how the communities realize and adapt to these changes. The hypothesis drivinhg study is that LEK of coastal fishers about the natural environment contributes to reduce vulnerability and to increase adaptive capacity in the smll-scale coastal fisheries in the face of global environmental change, including climate change. The findings show that the small-scale coastal fishers of the North coast of São Paulo make use of LEK for understanding the effects of the environmental change on the coastal ecosystems, as well as how they can adapt to such changes over time, thereby reducing the vulnerability of coastal socio-ecological systems in face of global environmental changes. An analytical insight into the local level regarding the perception of environmental and social change are essential to provide a better understanding about the effects of diverse changes in the complex ecosystems. Such understanding can contribute to future design of resources management plans in Brazilian coastal areas. / Doutorado / Aspectos Biológicos de Sustentabilidade e Conservação / Doutora em Ambiente e Sociedade

A dissertation submitted to the Faculty of Engineering and the Built Environment, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Science in Engineering, 2016 / Global climate change is among the major challenges the world is facing today, and can be attributed to enhanced concentrations of Greenhouse Gases (GHG), such as carbon dioxide (CO2), in the atmosphere. Therefore, there is an urgent need to mitigate CO2 emissions, and carbon capture and storage (CCS) is amongst the possible options to reduce CO2 emissions. Against this background, this work investigated the synthesis and performance evaluation of Polyaspartamide (PAA) adsorbent for CO2 capture. In particular, the effect of the presence of water-soluble amines in the amine-grafted poly-succinimide (PSI) (referred to as Polyaspartamide (PAA) adsorbent), was investigated. Methyl Amine (MA) and Mono-Ethanol Amine (MEA) were employed as water-soluble amines and the effect of changes in their concentration on CO2 adsorption capacity was investigated as well. Water-soluble amines were incorporated to allow water solubility of the adsorbent paving the way for freeze-drying to improve the geometric structure (surface area, pore volume and pore size) of the adsorbent. Initially, the PSI was loaded with Ethylenediamine (EDA), forming PSI-EDA. The water-soluble amines were grafted to PSI-EDA, with the EDA added to improve the chemical surface of the adsorbent for CO2 capture. NMR and FTIR analyses were performed and confirmed the presence of MA and MEA amine groups in the PAA, thereby indicating the presence of the grafted amines on the backbone polymer. BET analysis was performed and reported the pore volume, pore size and surface area of the freeze-dried material. It was observed that the physical properties did not change significantly after the freeze-drying compared to literature where freeze-drying was not employed. An increase in adsorption capacity with an increase in MA and MEA concentrations in MA-PAA and MEA-PAA samples was observed. At low amine concentrations (20% amine and 80% EDA grafted), MEA-PAA was observed to exhibit higher adsorption capacity compared to the MA-PAA samples. At high amine (100% amine grafted) concentrations, MA-PAA samples displayed higher adsorption capacity. Three runs were performed on each sample and the results obtained were reproducible. The best adsorption capacity obtained was 44.5 g CO2/kg Ads. Further work was then performed to understand the effects of operating variables on CO2 adsorption as well as the interactive effect using the Response Surface Methodology approach. The experiments were done by use of CO2 adsorption equipment attached to an ABB gas analyzer. A central composite design of experiment method with a total of 20 experiments was employed to investigate three factors, namely, temperature, pressure and gas flow rate. Six regression models were drawn up and mean error values computed by use of Matlab, followed by response surfaces as well as contours, showing the influence of the operating variables on the adsorption capacity as well as interaction of the factors were then drawn up. The results obtained displayed that each of the factors investigated, temperature, pressure and gas flowrate had an incremental effect on the adsorption capacity of PAA, that is, as each factor was increased, the adsorption capacity increased up to a point where no more increase occurred. Adsorption was seen to increase for both an increase in gas flowrate and adsorption pressure to a maximum, thereafter it starts to decrease. A similar trend was observed for the interaction between temperature and pressure. However, the interaction between gas flowrate and temperature was such that, initially as the temperature and the gas flowrate increase, the adsorption capacity increases to a maximum, thereafter, the temperature seizes to have an effect on the adsorption capacity with a combined effect of decreasing temperature and increasing gas flowrate resulting in a further increase in adsorption capacity. It was confirmed that the operating variables as well as the flow regime have an effect on the CO2 adsorption capacity of the novel material. The highest adsorption capacity was obtained in the pressure range 0.5 bar to 1.7 bar coinciding with the temperature range of 10 oC to 45 oC. The interaction of gas flowrate and adsorption pressure was such that the highest adsorption capacity is in the range 0.8 bar to 1.5 bar which coincides with the gas flowrate range from 35 ml / min to 60 ml / min. In conclusion, the best adsorption capacity of 44.5 g / kg via the TGA and 70.4 g / kg via the CO2 adsorption equipment was obtained from 100 % MA grafted PSI. / GR2016

The attitudes, perceptions and environmentally responsible behaviour of delegates (tourists) at the 17th Conference of the Parties (COP 17) to the United Nations Framework Convention on Climate Change (UNFCCC) is an area in which little or no academic research was undertaken from an academic, tourism perspective. This dissertation presents the results of a Green Survey undertaken during this climate change conference, focusing on the attitudes, perceptions and responsible practices of delegates in order to obtain a better understanding of tourism related impacts. Forms of tourism used as the conceptual basis were MICE, event tourism, sustainable tourism and responsible tourism integrated with socio-psychological behavioural theories. COP 17 was held in Durban (KwaZulu-Natal, South Africa) from the 28 November to 8 December, 2011 over 14 days. It was one of the many high-level international meetings on climate change, sustainable development and biodiversity conservation. Delegates involved in the formal discussions included representatives of the world's governments, international organisations and civil society. Several thousand attendees (visitors and local residents) participated in separate discussions and events organised by civil society to highlight environmental and climate injustices and the concerns of the poor. Interviews were conducted at the conference venues, where COP 17 was held, that is, the Inkosi Albert Luthuli International Convention Centre (ICC). The study endeavoured to understand the socio-economic and demographic profile of delegates. An additional objective was to examine the knowledge, attitudes and perceptions of delegates on various environmental issues related to climate change and its impact on tourism. An attempt was also made to determine whether there were any significant relationships between socio- demographic variables, knowledge and attitudes/ perceptions, and the behaviour of delegates. A structured questionnaire survey of 825 official delegates was undertaken and face-to-face interviews were conducted. The research survey used a non-probability, purposive, spatially-based systematic sampling techniques. The interviews were conducted in the ICC precinct (open spaces) and the first delegate was purposively selected. Subsequently, every fifteenth respondent was interviewed. The results indicate that despite delegates’ awareness of environmental best practices and having a good knowledge of environmental issues, there was inconsistency in behaviour due to a range of factors such as situational, internal and external aspects. Moreover, there was a gap in environmental behaviour practiced at home and whilst travelling. The majority of the delegates agreed that COP 17 had major environmental impacts in terms of energy consumption, air pollution, solid waste and overconsumption of water. Most respondents also stated that they engaged in environmentally responsible practices sometimes or always. It was also found that education had a significant relationship (p=0.000) on all environmental best practices whilst age and gender was only related to certain best practices. Additionally, knowledge of a few environment issues was significantly related to certain environmental best practices. Lastly, age was strongly related to the most number of behavioural practices and knowledge had significant relationships to numerous behavioural practices at home and while at the tourist destination. The study shows that socio-demographic variables, such as level of education, were important determinants of COP 17 delegates’ attitudes and environmentally friendly practices whilst traveling and at home. / Thesis (M.Sc.)-University of KwaZulu-Natal, Durban, 2013.

Este trabalho objetiva contribuir para o desenvolvimento de metodologia de análises de vulnerabilidade ecológica de bacias hidrográficas, com foco nos ecossistemas de água doce. Partiu-se de uma base metodológica proposta pela Rede WWF e de sua adaptação para a Bacia Lagos São João. Através da aplicação da metodologia desenvolvida, foi possível realizar uma análise multicriterial que identificou, por um lado, os principais estressores afetando a integridade ecológica da bacia, e sua severidade e frequência, mediante avaliação colaborativa de um painel de especialistas; por outro lado, avaliou-se a sensibilidade da bacia aos estressores selecionados. O uso de ferramentas de sistemas de informação geográfica permitiu espacializar, localizar e quantificar as ameaças (estressores), gerando mapas de risco ecológico, identificando em especial, as unidades mais desequilibradas do território em análise. Estas são indicadas como prioritárias para as ações de conservação dos ecossistemas aquáticos, e dos serviços ecossistêmicos providos, do qual depende grande parte da população da bacia. Esta dissertação apresenta, portanto, duas principais contribuições: um estudo global e preliminar da integridade ecológica da bacia Lagos São João; e, sobretudo, adaptações e detalhamentos da base metodológica desenvolvida pela Rede WWF, replicáveis em outras bacias hidrográficas. Ressalte-se que esta análise constitui etapa preliminar para a definição de estratégias de adaptação e resiliência de bacias hidrográficas às mudanças ambientais globais associadas às variabilidades e mudanças climáticas. / This study aims to contribute to the development of a methodology for the analysis of watersheds ecological vulnerability, focusing on freshwater ecosystems. It Was developed from a methodological base proposed by WWF and its adapted application to Lagos São João Basin. With this methodology, it was possible to perform a multi-criteria analysis identifying, by one side, the major stressors affecting the ecological integrity of the basin, and its severity and frequency, by collaborative evaluation of a panel of experts; on the other side, was evaluated the basin sensitivity to stressors identified. The use of geographic information system tools allowed spatialize, locate and quantify the treats (stressors), generating maps of ecological risk, identifying in particular, the units more unbalanced of the territory in question. These are priority in actions of aquatic ecosystems conservation, and provided ecosystems services, which depends much of the population of the basin. Can be conclude, therefore, that this dissertation presents two main contributions: a global and preliminary study of Lagos São João Basin ecological integrity, and, above all, the adaptations and detailing of the methodology base developed by WWF, replicable to other watersheds. Should be noted that this analysis is the preliminary step for the definition of basins adaptation and resilience strategies to global environmental changes associated with climate variability and change.

Este trabalho objetiva contribuir para o desenvolvimento de metodologia de análises de vulnerabilidade ecológica de bacias hidrográficas, com foco nos ecossistemas de água doce. Partiu-se de uma base metodológica proposta pela Rede WWF e de sua adaptação para a Bacia Lagos São João. Através da aplicação da metodologia desenvolvida, foi possível realizar uma análise multicriterial que identificou, por um lado, os principais estressores afetando a integridade ecológica da bacia, e sua severidade e frequência, mediante avaliação colaborativa de um painel de especialistas; por outro lado, avaliou-se a sensibilidade da bacia aos estressores selecionados. O uso de ferramentas de sistemas de informação geográfica permitiu espacializar, localizar e quantificar as ameaças (estressores), gerando mapas de risco ecológico, identificando em especial, as unidades mais desequilibradas do território em análise. Estas são indicadas como prioritárias para as ações de conservação dos ecossistemas aquáticos, e dos serviços ecossistêmicos providos, do qual depende grande parte da população da bacia. Esta dissertação apresenta, portanto, duas principais contribuições: um estudo global e preliminar da integridade ecológica da bacia Lagos São João; e, sobretudo, adaptações e detalhamentos da base metodológica desenvolvida pela Rede WWF, replicáveis em outras bacias hidrográficas. Ressalte-se que esta análise constitui etapa preliminar para a definição de estratégias de adaptação e resiliência de bacias hidrográficas às mudanças ambientais globais associadas às variabilidades e mudanças climáticas. / This study aims to contribute to the development of a methodology for the analysis of watersheds ecological vulnerability, focusing on freshwater ecosystems. It Was developed from a methodological base proposed by WWF and its adapted application to Lagos São João Basin. With this methodology, it was possible to perform a multi-criteria analysis identifying, by one side, the major stressors affecting the ecological integrity of the basin, and its severity and frequency, by collaborative evaluation of a panel of experts; on the other side, was evaluated the basin sensitivity to stressors identified. The use of geographic information system tools allowed spatialize, locate and quantify the treats (stressors), generating maps of ecological risk, identifying in particular, the units more unbalanced of the territory in question. These are priority in actions of aquatic ecosystems conservation, and provided ecosystems services, which depends much of the population of the basin. Can be conclude, therefore, that this dissertation presents two main contributions: a global and preliminary study of Lagos São João Basin ecological integrity, and, above all, the adaptations and detailing of the methodology base developed by WWF, replicable to other watersheds. Should be noted that this analysis is the preliminary step for the definition of basins adaptation and resilience strategies to global environmental changes associated with climate variability and change.

Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciencias Humanas / Made available in DSpace on 2018-08-15T21:24:43Z (GMT). No. of bitstreams: 1 Silva_CesarAugustoMarquesda_M.pdf: 4288587 bytes, checksum: 7047af8acde22f0055c700f95c46522f (MD5) Previous issue date: 2010 / Resumo: Durante as últimas décadas a demografia discutiu importantes conceitos ao tratar da relação entre dinâmica populacional e mudança ambiental. Surgiram novos caminhos, buscando compreender essa relação em análises centradas no entendimento do papel do espaço, dos padrões de produção e consumo, do risco e da vulnerabilidade. Recentemente, com a confirmação das estimativas das mudanças climáticas, a demografia é novamente desafiada a elucidar os elementos da dinâmica populacional que afetam o clima e que por ela são afetados. Nessa pesquisa objetiva-se compreender elementos desse segundo ponto, analisando riscos ambientais às mudanças climáticas em populações residentes em zonas costeiras. Mais especificamente, analisamos a dinâmica de três municípios costeiros do Estado de São Paulo, na Região Metropolitana da Baixada Santista: Bertioga, Guarujá e São Vicente. Tais municípios, majoritariamente urbanos, abrigam espaços diferenciados e desiguais, tanto do ponto de vista geográfico como social. Geograficamente, a presença de morros, rios, estuários e do próprio mar, condicionam a formação de riscos ambientais diferenciados. Socialmente, com a ocupação dos espaços para usos diversos (residenciais, turísticos e industriais), e por grupos com perfis sócio-econômicos particulares, cada um desses riscos atinge populações também específicas. A partir desses fatores a hipótese do trabalho é que populações com características distintas passam por diferentes riscos ambientais. Desse modo, os riscos que selecionamos são relativos às mudanças ambientais: a elevação do nível do mar, as inundações e os deslizamentos. Para cada um desses riscos, e de suas possíveis combinações, foram criadas zonas de risco, utilizando os dados de setores censitários. Os resultados indicaram a confirmação da nossa hipótese: populações mais pobres estão nas imediações de corpos d'água e morros, áreas onde a possibilidade das intensificações de inundações e deslizamentos é maior, enquanto as mais ricas localizam-se próximas ao mar, onde o maior risco é o da elevação do nível médio do mar / Abstract: Demography has discussed important concepts in concern with the relation between population dynamics and environmental change through last decades. New ways were developed and the role of space, patterns of production and consumption, risk and vulnerability were incorporated in theses analysis. Recently, with more accuracy estimates of climate change, demography is again challenged to elucidate the elements of population dynamics that affect climate and vice-versa. This research aims to understand this elements, analyzing risks of climate change on populations living in coastal areas. More specifically, we analyze the dynamics of three coastal municipalities of Sao Paulo State, in the Metropolitan Area of Baixada Santista: Bertioga, Guarujá and São Vicente. These municipalities, mostly urban, harbor differentiated and uneven spaces, both geographically and socially. Geographically, the presence of hills, rivers, estuaries and the sea, influence different environmental risks. Socially, space has been transformed according to several social uses (residential, tourist and industrial), resulting in specific groups, with particular socio-economic profiles, living in distinct risks zones. Based on these factors, the hypothesis adopted is that populations with different characteristics are replaced by different environmental risks. Therefore, the risks selected represent some of the environmental changes dangers: rising sea levels, more intensive flooding and landslides. For each of these risks, and their possible combinations were created risk areas, using data from census tracts. The results indicated the poorest are in the vicinity of ponds and hills, where the possibility of intensification of floods and landslides is higher, while the richest are sited near sea, where the greatest risk is the elevation of the average sea level / Mestrado / Demografia / Mestre em Demografia