Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 74 for “"Amazonia"”.
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Fire dynamics in Amazonia
<p>Fires are major disturbances for ecosystems in Amazonia. Because of their short time scale and strong links to biogeochemical cycles, fires significantly affect fluxes and stocks of carbon and nutrients, change air composition, and modify ecosystems structure and functioning. Fires are strongly …
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Avian Distribution Patterns and Conservation in Amazonia
… address the distribution and conservation of the Amazonian avifauna at several different scales. In Chapter 1, I looked at how the spatial bias in ornithological collections affects our understanding of the patterns of diversity in Amazonia. I showed that Amazonia is massively under-collected, …
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Indigeneity on Display: Ethnographic Adventure Film in Amazonia
This paper seeks to explore the early twentieth century trend of ethnographic adventure filmmaking. A subgenre of the ethnographic film, these works blended ethnographic observations with scripted and staged adventure stories, advancing popular tropes of indigenous first contact and the superiority …
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Structure of a primate community in Reserve Adolpho Ducke, central Amazonia
Primate surveys that aim to determine the structure of a local community and the population densities of its constituent species are essential when assessing the conservation status of primates. Such information is important to inform conservation actions and management plans. However, for many …
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Educación mediada por ordenador: Una realidad brasileña en la amazonia paraense.
La presente investigación trata sobre el proceso de enseñanza aprendizaje conducido por la tecnología, concretamente a través del uso del ordenador. La educación a distancia (E.A.D.) está creciendo y tomando espacio con el propósito de suplir parte de las deficiencias existentes hoy día en la …
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The Creation of Metropolitan Amazonia: Genetic Consequences of Migration and Urbanization
… in a sample of 182 individuals from the Peruvian Amazonian city of Yurimaguas. The site of extensive pre-Columbian and modern migratory fluctuation, contemporary Yurimaguas is characterized by considerable population diversity. Individually unique migratory and demographic profiles were combined …
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The Afterlife of Wells, from oil to soil in the Amazonia
Fifty years ago, the Ecuadorian State celebrated the beginning of a new economic era for the country as the first barrel of oil was extracted from the Amazon. Nevertheless, resource extraction has not resulted in sustainable economic prosperity, nor has it reduced the inequality affecting local and …
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The Impact of Global Climate Change on Tropical Forest Biodiversity in Amazonia
… seasonality for parts of the tropics, including Amazonia. This may have a greater impact on tropical forest flora than temperature change alone. The Amazon region holds a high proportion of global biodiversity, yet conservation plans rarely consider possible climate change impacts. This thesis …
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Sustainability with an Ethical Aim: Lessons from an American Nun in Amazonia
<p><strong>Research Topic</strong></p> <p>Human imagination, an ethical aim and action are the progenitors for reconciliation between humans and their environment. Two examples of such reconciliation are found in Brazil and are the result of the tireless work of an American Nun, Sister Dorothy …
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Edward Goodall’s ‘Sketches in British Guiana’: art, anthropography and colonialism in 19th century Amazonia
This thesis examines sketched portraits of Amerindian peoples created by the English artist Edward Goodall during the 1841-1844 Boundary Survey of British Guiana, now Guyana, which was carried out by the German scientific explorer, Robert Schomburgk. The portraits formed part of a larger body of …
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Land conversion in Amazonia and Northern South America : influences on regional hydrology and ecosystem response
A numerical model of the terrestrial biosphere (Ecosystem Demography Model) is compbined with an atmospheric model (Brazilian Regional Atmospheric Modeling System) to investigate how land conversion in the Amazon and Northern South America have changed the hydrology of the region, and to see if …
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Land tenure security and resource use in Peruvian Amazonia: A case study of the Ucayali region
… is done in the Ucayali region of Peruvian Amazonia to further assess the relevance to titling projects to address problems of environmental degradation. Results show the importance of institutional constraints, in the form of regulations regarding access to land, in the way land tenure is …
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Nature and Culture in Prehistoric Amazonia : Using G.I.S. to reconstruct ancient ethnogenetic processes from archaeology, linguistics, geography, and ethnohistory
… and linguistic development of pre-Columbian Amazonia, with a particular focus on the period between 500 BC and AD 1500. In assembling and analyzing data from archaeology, linguistics, ethnohistory, ethnography, and geography in a Geographical Information System (G.I.S.), it synthesizes large …
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"""&Iquest;que Va a Pasar Con Los Indios Cuando Todos Seamos Indios?"" Ethnic Rights and Reindianization in Southwestern Colombian Amazonia"
As the reindianization process (a generic Indianness) transforms into a reethnization (particularizing and specific) one, the regional terrain hosted a competition of identity politics that unveiled an extraordinary and hierarchical diversity of subject positions, social experiences and cultural …
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THE PACE AND TIMING OF CHANGING LANDSCAPES AS VIEWED THROUGH COSMOGENIC RADIONUCLIDES: SYNTHETIC AND REAL EXAMPLES FROM THE CENTRAL ANDES AND AMAZONIA
… in the Central Andes of Argentina and Central Amazonia.</p> <p>To date, the limits and assumptions embedded in the use of paleo-erosion rates have only been lightly addressed in the literature. No tool exists for the assessment of the sensitivity of paleo-erosion rate data to other …
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Geological Control of Floristic Composition in Amazonian Forests
<p>Amazonia contains the largest remaining tracts of undisturbed tropical forest on earth, and is thus critical to international nature conservation and carbon sequestration efforts. Amazonian forests are notoriously difficult to study, however, due to their species richness and inaccessibility. …
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The phylogeography of Cheracebus species located in the Rio Negro basin and its implications for our understanding of the historical biogeography of Amazonia
… diversity. Although it has been shown that large Amazonian rivers divide many titi monkey species, it is not known if smaller tributaries also play a role in separating sister species. In this study, we investigate if populations of widow titi monkeys Cheracebus lugens inhabiting the Rio Negro …
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Relationships between soil chemical properties and forest structure, productivity and floristic diversity along an altitudinal transect of moist tropical forest in Amazonia, Ecuador.
Entlang eines Höhentransektes von ungestörten höheren Tiefland zu montanen Primärwäldern in Nordost Ecuadors, im Gebiet des Sumaco Biosphären Reservates (SBR), untersuchten wir die die Hypothesen, dass (1) die Verfügbarkeit von Phosphor niedrig ist in den tiefer gelegenen Wäldern und mit …
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