DISTRIBUTION OF TREE AND SHRUBS SPECIES ALONG OF THE SOIL HUMIDITY GRADIENT FROM PUNCTUAL HEADWATERS OF THE SANTA CRUZ STREAM WATERSHED, LAVRAS, SE BRAZIL
Titel:
DISTRIBUTION OF TREE AND SHRUBS SPECIES ALONG OF THE SOIL HUMIDITY GRADIENT FROM PUNCTUAL HEADWATERS OF THE SANTA CRUZ STREAM WATERSHED, LAVRAS, SE BRAZIL
Auteur:
Lilian Vilela Andrade Pinto Antonio Claudio Davide Soraya Alvarenga Botelho Ary Teixeira de Oliveira-Filho Evandro Luiz Mendonça Machado
Verschenen in:
Cerne
Paginering:
Jaargang 11 (2005) nr. 3 pagina's 294-305
Jaar:
2005
Inhoud:
The objective of this research was to verify the distribution of the tree and shrubs species along the soil humiditygradient in the punctual headwaters environment localized at the Santa Cruz stream watershed, Lavras, Minas Gerais State, Brazil.To understanding the vegetation it was performed a structural survey of shrubs and trees stratum of three degraded and disturbedheadwaters. In each sampled headwaters it was instaled 4 plots of 50 x10m located above (P1), below (P2), on the right (P3) and onthe left (P4) of the headwaters. The area around of the headwaters was separated in two gradients of species. The first gradientconsisted in species present in the plot P2, following the river bed and in the firsts 10m length of the plots P1, P3 and P4. The secondgradient comprised of species present in the plots P1, P3 and P4 from of the 10m length of each plot. In the structural surveys they wererecorded 1.217 individuals distributed in 110 species, 80 genus and 43 botanical families. It was concluded that the exclusiveness ofthe species in the distinct gradients, the value of density of the contrasty individuals for the species in the gradients and the model ofspatial distribution of the species along the river bed demonstrated the specificity of the environment to the headwaters. The specificitydemands different strategies for conservation and reclamation of the headwaters.
Uitgever:
Universidade Federal de Lavras - UFLA (provided by DOAJ)