Caatinga vegetation dynamics under various grazing intensities by steers in the semi-arid Northeast, Brazil
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Published source details
De Albuquerque S.G. (1999) Caatinga vegetation dynamics under various grazing intensities by steers in the semi-arid Northeast, Brazil. Journal of Range Management, 241-248.
Published source details De Albuquerque S.G. (1999) Caatinga vegetation dynamics under various grazing intensities by steers in the semi-arid Northeast, Brazil. Journal of Range Management, 241-248.
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This study is summarised as evidence for the following.
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Prevent livestock grazing in forests Action Link |
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Prevent livestock grazing in forests
A controlled study in 1978-1984 in dry tropical forest in Brazil (De Albuquerque 1999) found that preventing cattle grazing decreased mortality of shrubs but not the density of tree seedlings. The average mortality over two years of five shrub species was higher in grazed (7.7-11.7%) than in ungrazed plots (4.5%). The number of tree seedlings (<0.5 m height) was similar in grazed (1.9-5.2 seedlings/m2) and ungrazed plots (5.8 seedlings/m2). Mortality of five selected shrub species: Lippia microphylla, Croton rhamnifolius, Calliandra depauperata, Cordia leucocephala and Bauhinia cheilantha, was calculated for 1980-1982 and for 1982-1984. Mortality data were collected in 6-10 plots (20 × 5 m) in each of three grazed (0.150, 0.100 and 0.075 cattle/ha) and one ungrazed treatment area (40-100 ha). Density of tree seedlings was determined annually in 1979-1984 in five quadrats (2 x 0.5 m) in each plot.
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