Search Results

You are looking at 1 - 5 of 5 items for :

  • North America x
  • Large-Scale Biosphere-Atmosphere (LBA) Experiment x
  • All content x
Clear All
Andrew J. Elmore, Gregory P. Asner, and R. Flint Hughes

. 2003 . Ecological heterogeneity in the effects of grazing and fire on grassland diversity. Conserv. Biol. 17 : 837 – 845 . Heitschmidt , R. K. , S. L. Dowhower , and J. W. Walker . 1987 . Some effects of a rotational grazing treatment on quantity and quality of available forage and amount of ground litter. J. Range Manage. 40 : 318 – 321 . Hicke , J. A. Coauthors 2003 . Postfire response of North American boreal forest net primary productivity analyzed with satellite

Full access
Piyachat Ratana, Alfredo R. Huete, and Laerte Ferreira

1. Introduction The cerrado is the largest neotropical savanna region in South America, extending throughout Brazil, Paraguay, and Bolivia. This biome is among the richest in biodiversity and consists of a large variety of vegetation communities with a full range of physiognomic categories ranging from grassland to forest formations. There have been more than 500 woody plant species ( Feifili et al. 1998 ) and at least 4700 herbaceous species ( Mendonca et al. 1998 ) found in the cerrado region

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

exist for various parts of the basin, driven predominantly by annual patterns of solar radiation and precipitation from intertropical convergence zone (ITCZ) movement. Wet and dry seasons occur at different times throughout the region; dry seasons create increased flammability and higher fire occurrence. The northernmost states, namely, Roraima and Amapá, lie north of the equator and, thereby, have seasonal patterns that are different from those states south of equator. Rainfall distribution in

Full access
Douglas C. Morton, Ruth S. DeFries, Yosio E. Shimabukuro, Liana O. Anderson, Fernando Del Bon Espírito-Santo, Matthew Hansen, and Mark Carroll

1. Introduction Deforestation in the humid Tropics is a conspicuous change in land use with myriad impacts on global carbon (e.g., Houghton et al. 2000 ) and climate (e.g., Salati and Nobre 1991 ; Werth and Avissar 2002 ). Deforestation rates in tropical Africa, Southeast Asia, and South America have remained constant or increased over the past two decades ( DeFries et al. 2002 ), elevating the need for frequent and accurate assessment of forest loss. In Brazil, the continued expansion of

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

( Figure 3 ) are from Roraima. The large fire near the lower-right corner is a prescribed burn set by the LBA-Ecology (ECO) LC-23 project team, which was also observed from aircraft and on the ground. The INPE algorithm flagged the two MODIS pixels that included most of the fire front. The EOS algorithm also flagged a third pixel at nominal confidence level, which covers the edge of the fire front. There is an additional fire ∼15 km to the north. A larger fire front is visible at the edge of a large

Full access