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Wilfrid Schroeder, Jeffrey T. Morisette, Ivan Csiszar, Louis Giglio, Douglas Morton, and Christopher O. Justice

model was applied to both absolute and area-relative fire counts. We conduct statistical hypothesis tests to see if either of the fitted β or γ parameters is statistically equivalent to zero. Rejecting this test implies that fire counts differ by biome (rejecting H : β = 0) or sensor year (rejecting H : γ = 0). 2.3.2. Brazilian Legal Amazon Nine states compose the Brazilian Legal Amazon, with a total area exceeding 5 × 10 6 km 2 . Given the large area extent, distinct climate regimes

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Ted R. Feldpausch, Susan J. Riha, Erick C. M. Fernandes, and Elisa V. Wandelli

basal area by diameter classes and growth form for 10 forests regenerating from abandoned pastures on oxisols in an udic soil moisture regime to complement published studies on oxisols and ultisols in the seasonally drier ustic soil moisture regime in eastern Amazônia. 2. Methods 2.1. Study areas The study was conducted at three fazendas (cattle ranches) spanning approximately 26 km along the federal road BR-174 from Manaus to Boa Vista: Fazenda Rodão (km 46), the Brazilian Agricultural Research

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Gregory P. Asner, David E. Knapp, Amanda N. Cooper, Mercedes M. C. Bustamante, and Lydia P. Olander

1. Introduction The Brazilian Amazon forest and cerrado savanna regions cover more than 7 × 10 6 km 2 of South America. They are highly diverse in terms of species composition, ecosystem physiognomy, disturbance regimes, and human activities. The spatial coverage, inaccessibility, and structural variation of these biomes impede measurement and monitoring studies pertinent to ecological research, conservation studies, and land management. Remote sensing is the best possible method for large

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