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 35 for “"Amazon Basin"”.
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Interactions of hydrology and climate in the Amazon basin
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1993.
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Estimating evapotranspiration from the Amazon Basin using the atmospheric water balance
… patterns of evapotranspiration (ET) in the Amazon basin are still poorly understood. Field studies in the Amazonian forest have shown that at some sites, deep roots allow trees to sustain elevated transpiration during several months of minimal rainfall, whereas at others, trees experience …
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Ecology, Growth, and Migration of Pseudoplatystoma fasciatum in the Amazon Basin
… security and income for riverine people in the Amazon basin. This species is heavily fished and may be threatened by the growing construction of hydropower dams. One ecological aspect lacking in the literature is how the growth of Pseudoplatystoma species is affected by interannual variations in …
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Isotopic constraints on sources and cycling of riverine dissolved inorganic carbon in the Amazon Basin
… of riverine biogeochemical functioning. Amazonian and humid tropical rivers represent a large, neglected source of CO2 to the atmosphere. Carbon isotopes are invaluable tools for examining sources and cycling of inorganic carbon. However, 14C-DIC has never been analyzed in Amazonia, while …
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A Geocritical Approach to Coloniality and Aesthetics: Mapping the Spatial Narratives of the Amazon Basin
… in the Western narration and aesthetics of the Amazon basin, particularly the consequences of travel writing, science fiction and cinema of Amazon’s tropicality and its enduring effects on spatial cartography. In addressing Western representations of the jungle terrain, this paper focuses on the …
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Reforestation Management to Prevent Ecosystem Collapse in Stochastic Deforestation
… case, we investigate the model in the Brazil Amazon Basin. Special attention is given to the outcome at the turning point, tipping point, and transition point, considering a critical threshold beyond which recovery becomes implausible. Our findings suggest that reducing tenure costs has …
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Remote Sensing of Fire, Flooding, and White Sand Ecosystems in the Amazon
<p>Human and natural disturbance affect the Amazon basin at several spatial and temporal scales. In this thesis, I used satellite-detected hot pixels to examine patterns of human-caused disturbance and protected areas in the Brazilian Amazon from 1996-2006. Deforestation fires, as measured by hot …
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Civilized people in uncivilized places : rubber, race, and civilization during the Amazonian rubber boom
… of tropicality was its inherent ambivalence. The Amazon basin has been a particularly important source for the creation and maintenance of these stereotypes about the tropical world. Reinvented by Alexander von Humboldt as an exotic paradise at the beginning of the nineteenth century, the Amazon …
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Biotic pump of atmospheric moisture: A conceptual model
… a conceptual model of the theory over the Amazon basin as to quantitatively assess the existence and determine the properties of donor and acceptor regions statistically through their respective condensation rates. The model uses the predictive capabilities of Time-Delayed Neural Networks …
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Spatiotemporal Variability of CO2, Solar-Induced Fluorescence, And Precipitation Over the Tropical Rainforests
… an atmospheric CO2 sink to a CO2 source. The Amazon basin, Congo basin, and the tropical Indo-Pacific play vital roles in biospheric processes, which contribute to Earth’s atmospheric CO2 concentration. This investigation will use various space-based and ground-based datasets and empirical …
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The Effects of Biochar and Reactive Iron Additions on Soil Carbon and Nitrogen Retention
… soils (e.g., terra preta soils in the Amazon Basin) to stabilize and retain C and nutrients in SOM while maintaining relatively high levels of productivity compared to surrounding natural soils that formed under similar conditions. I hypothesized that two of the major stabilizers of …
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Interactions of Vegetation and Climate: Remote Observations, Earth System Models, and the Amazon Forest
… interactions change across seasons in the Amazon basin. We use observations of solar induced fluorescence from the Orbiting Carbon Observatory 2 (OCO2) to statistically analyze the sensitivity of fluorescence to synoptic variations in temperature and precipitation. In addition to studying …
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Fields and Forests: A Stable Isotope Perspective on the Subsistence Strategies of Past Amazonian Peoples
… employed by the ancient peoples of the Amazon have been a fundamental and extensively debated topic since the inception of archaeological research in the region. Despite a general disagreement regarding carrying capacity and human development in past Amazonia, the initial subsistence …
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Rescinding Rights: An analysis of governmental changes and indigenous land demarcation in Mato Grosso do Sul, Brazil
… significant due to the fact that outside of the Amazon Basin, Mato Grosso do Sul has the largest population of indigenous peoples. The research utilized a combination of political economy and ecology theories, as the underpinnings of these theories allowed for a systematic assessment of the …
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Defining Biodiversity: A Local Assessment of the Tahuayo River, Peru Using Self-directed Photography
… Loreto, Peru, protects 420,000 hectares of the Amazon basin. In 2009, the ACRCTT received formal government recognition after three decades of advocacy and conservation work by resident communities. Local resource users who live a subsistence lifestyle possess sophisticated Traditional …
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Spatial distribution of anuran assemblages from Caxiuanã, Brazil : testing the riverine barrier hypothesis and the influence of life-history traits
… and forming effective conservation plans. In the Amazon basin, the spatial structure of animal communities has often been explained by the riverine barrier hypothesis, which assumes that large rivers act as main ecological drivers of diversification. However, life-histories, functional traits and …
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Near-surface hydrology and hydrochemistry under contrasting land-cover
… in the southwestern part of the Brazilian Amazon basin. An intensive hydrological and hydrochemical sampling and monitoring network was set up. The results indicate that the hydrology was modified in many ways due to land-use change. The most important alteration was the increased …
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A Climatological Analysis of Upper-Tropospheric Velocity Potential Fields using Global Weather Reanalysis, 1958-2020
… key regions of variability (Equatorial Africa, Amazon Basin, Equatorial Central Pacific, and Equatorial Indonesia). To supplement this analysis, the highly correlated variables to velocity potential of outgoing longwave radiation (OLR) and daily precipitation rate were used and directly compared …
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Multiscale Anthropogenic Impacts on Stream Condition and Fish Assemblages in Amazonian Landscapes.
… understood. This is especially true for the Amazon basin, the world's largest basin in both area and total discharge, and in particular for the complex network of low-order streams that make up the vast majority of its watercourses. These streams connect terrestrial and aquatic ecosystems …
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Least Cost Path Modeling Between Inka and Amazon Civilizations
… may have connected to sites in the western Amazon Basin. Our approach further used the known Inka Road network to test performance of two types of LCP models (linear vs. areal calculation) and four types of cost functions. LCPs can be calculated with an areal approach, where each cell of the …
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