• Publications
  • Influence
Characterization of pasture biophysical properties and the impact of grazing intensity using remotely sensed data
Abstract Remote sensing has the potential of improving our ability to map and monitor pasture degradation. Pasture degradation is one of the most important problems in the Amazon, yet the manner inExpand
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Ten-Year Landsat Classification of Deforestation and Forest Degradation in the Brazilian Amazon
We demonstrate a method to quantify annual deforestation and degradation simultaneously across the entire region for the years 2000–2010 using high-resolution Landsat satellite imagery. Expand
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Large area mapping of land‐cover change in Rondônia using multitemporal spectral mixture analysis and decision tree classifiers
[1] We describe spatiotemporal variation in land cover over 80,000 km2 in central Rondonia. We use a multistage process to map primary forest, pasture, second growth, urban, rock/savanna, and waterExpand
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Evaluation of hyperspectral data for pasture estimate in the Brazilian Amazon using field and imaging spectrometers
We used two hyperspectral sensors at two different scales to test their potential to estimate biophysical properties of grazed pastures in Rondonia in the Brazilian Amazon. Using a fieldExpand
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Sources of error in accuracy assessment of thematic land-cover maps in the Brazilian Amazon
Abstract Valid measures of map accuracy are critical, yet can be inaccurate even when following well-established procedures. Accuracy assessment is particularly problematic when thematic classes lieExpand
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Carbon emissions from deforestation and forest fragmentation in the Brazilian Amazon
Forest-fragmentation-related edge effects are one of the major causes of forest degradation in Amazonia and their spatio-temporal dynamics are highly influenced by annual deforestation patterns.Expand
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Evaluation of Landsat-Based METRIC Modeling to Provide High-Spatial Resolution Evapotranspiration Estimates for Amazonian Forests
We evaluate the potential of the Landsat-based METRIC (Mapping Evapotranspiration at high Resolution with Internalized Calibration) model to estimate high-resolution (30 m) forest ET by comparing to flux tower ET (FT ET) data collected over seasonally dry tropical forests in Rondonia. Expand
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Wildfires in Bamboo-Dominated Amazonian Forest: Impacts on Above-Ground Biomass and Biodiversity
Fire has become an increasingly important disturbance event in south-western Amazonia. We conducted the first assessment of the ecological impacts of these wildfires in 2008, sampling forestExpand
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The responses of leaf litter ant communities to wildfires in the Brazilian Amazon: a multi-region assessment
Fire is frequently used as tool for land management in the Amazon, but often escapes into surrounding forests, with potentially severe impacts for forest biodiversity. We investigated the effects ofExpand
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Biomass collapse and carbon emissions from forest fragmentation in the Brazilian Amazon
[1] Forest fragmentation due to deforestation is one of the major causes of forest degradation in the Amazon. Biomass collapse near forest edges, especially within 100 m, alters aboveground biomassExpand
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