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- W2113417310 abstract "This study records the consequences of fire upon the soil and structure of the Amazonian Forest of Gaúcha do Norte, Mato Grosso state, Brazil (13°12′S and 53°20′W). For this, the number of individuals sampled in 1 ha of the forest, during a phytosociological survey completed 2 days before the accidental fire, was compared with the survivors recorded afterwards in the reinventory of the area taken 2 days and 10 months after the fire. For the surveys, the area of 1 ha was subdivided into 50 plots of 10m×20m, and all the individuals with circumference at breast height (CBH)≥15 cm were sampled. Chemical analysis of the 30 soil samples collected 2 days before the fire were compared with those obtained 15 days and 1 year after the fire. It was seen that, soon after the fire, there was a significant increase in the nutrient levels in the soil, an increase in the pH and a decrease in the aluminum toxicity. However, after 1 year, losses by lixiviation resulted in a nutrient reserve in the soil of less than that before the fire. The tree mortality was extremely high (23.98%), particularly amongst the younger individuals of the population (93.68% of the total of deaths in the period). There was no significant reduction in the forest richness analyzed: 60% of the species had reduced populations after the fire, but just four species were locally extinct. Results, however, demonstrated a role for fire in the selection of resistant species or those adapted to fires, since some species demonstrated a greater tolerance to the fire than others." @default.
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- W2113417310 date "2003-10-01" @default.
- W2113417310 modified "2023-10-14" @default.
- W2113417310 title "Alterations following a fire in a forest community of Alto Rio Xingu" @default.
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- W2113417310 doi "https://doi.org/10.1016/s0378-1127(03)00156-7" @default.
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