The main objective of this study was to compare the adequacy of various multitemporal image compositing algorithms to produce composite images suitable for burned area analysis. Satellite imagery from the NOAA Advanced Very High Resolution Radiometer (AVHRR) from three different regions (Portugal, central Africa, and South America) were used to compare six algorithms, two of which involve the s...

The bacterial community structure in soil of a tropical rainforest in East Kalimantan, Indonesia, where forest fires occurred in 1997-1998, was analysed by denaturing gradient gel electrophoresis (DGGE) with soil samples collected from the area in 2001 and 2002. The study sites were composed of a control forest area without fire damage, a lightly-burned forest area, and a heavily-burned forest ...

Faridullah, a. Waseem, a. alam, m. irshad, m. a. sabir and m. umar, 2012. leaching and mobility of heavy metals after burned and burned poultry litter application to sandy and masa soils. Bulg. J. Agric. Sci., 18: 733-741 application of poultry litter to cropland may increase metal mobility, because the soluble organic ligands in poultry litter can form water-soluble complexes with metals. The ...

Within the eastern deciduous forest region, forest composition varies, with some areas dominated by a mix of oaks (Quercus spp.) and other areas dominated by a mix of sugar maple (Acer saccharum) and other tree species. Prescribed fire is being used on an experimental basis to assess its effectiveness in restoring and maintaining oak-dominated forests. Maple-dominated forests are susceptible to...

Prescribed fire in rangeland ecosystems is applied for a variety of management objectives, including enhancing productivity of forage species for domestic livestock. In the big sagebrush (Artemisia tridentata Nutt.) steppe of the western United States, fire has been a natural and prescribed disturbance, temporarily shifting vegetation from shrub–grass codominance to grass dominance. There is li...

Subalpine coniferous forests are adapted to cycles of fire and successional development, but increasing frequency severity altering historical stand structure, composition, plant diversity. For instance, conifer regeneration has become increasingly variable as a result prolonged aridity following fire, the potential cascading effects on understory community development remain virtually unexplor...

Burned landscapes present several challenges to quantifying landscape carbon balance. Fire scars are composed of a mosaic of patches that differ in burn severity, which may influence postfire carbon budgets through damage to vegetation and carbon stocks. We deployed three eddy covariance towers along a burn severity gradient (i.e., severely burned, moderately burned, and unburned tundra) to mon...

In forests, termites serve as “soil engineers,” translocating mineral soil to the surface, constructing macropores to improve water infiltration, increase soil minerals and organic carbon, facilitate the growth of microbes and affect the growth of vegetation. The future productivity of a forest site therefore depends to some degree on termite activity. termites could reduce the probability of f...

In this paper, we tested the use of active and passive sensor fusion for relating forest fire history to landscape spatial patterns. Principal Components Analysis (PCA) was implemented to combine Landsat Thematic Mapper (TM) and Shuttle Imaging Radar (SIR-C) data from October 1994. Resulting PCs were converted to landscape patch maps. Plots with known fire history were delineated using a fire a...