1 research outputs found
TREE SPECIES COMMUNITY SPATIAL PARTITION IN FUNCTION OF SOIL DRAINAGE IN AN ARAUCARIA FOREST FRAGMENT IN SOUTHERN BRAZIL
O estudo das rela\ue7\uf5es entre a vegeta\ue7\ue3o e os solos
pode auxiliar na compreens\ue3o da estrutura de uma comunidade
florestal, dando suporte \ue0 conserva\ue7\ue3o da
biodiversidade. Assim, o presente estudo teve como objetivo avaliar a
exist\ueancia da parti\ue7\ue3o espacial da comunidade de
esp\ue9cies arb\uf3reas em um fragmento de Floresta com
Arauc\ue1ria, em fun\ue7\ue3o da drenagem do solo. Para este
prop\uf3sito, foi realizada a caracteriza\ue7\ue3o ambiental
(drenagem do solo, propriedades f\uedsicas e qu\uedmicas do solo,
topografia, compacta\ue7\ue3o dos solos, profundidade dos solos e
cobertura do dossel) em 25 parcelas de 20x20 m, onde indiv\uedduos de
esp\ue9cies arb\uf3reas, com circunfer\ueancia a altura do peito
(CAP) maior ou igual a 15,7 cm, foram previamente contados, medidos e
identificados. Os dados foram analisados por meio do teste de
Mann-Withney, an\ue1lise de vari\ue2ncia multivariada n\ue3o
param\ue9trica (NPMANOVA), an\ue1lise multivariada (NMDS) e
an\ue1lise de esp\ue9cies indicadoras. Os locais foram
classificados como bem e moderadamente drenados, com diferen\ue7as
ambientais que determinaram a riqueza, a parti\ue7\ue3o espacial da
comunidade e a ocorr\ueancia de esp\ue9cies indicadoras na pequena
escala espacial considerada. Desta forma, conclui-se que, no fragmento
florestal estudado, as varia\ue7\uf5es espaciais na drenagem do
solo foram determinantes na heterogeneidade da composi\ue7\ue3o
flor\uedsticaestrutural observada.The relationship vegetation-soil can contribute to understand the
forest structure, supporting biodiversity conservation. Thus, the aim
of the present study was to verify the existence of spatial partition
of the tree species community in an Araucaria forest fragment in
function of soil drainage. For this sake, an environmental
characterization (soil drainage, physical and chemical soil properties,
topography, compression with circumference at breast height 6515.7
cm were previously counted, measured and identified. The data were
analysed by Mann-Withney test, non-parametric multivariate ANOVA
(NPMANOVA), multivariate analysis (NMDS) and indicator species
analysis. In this small spatial scale there were two drainage classes,
corresponding to well and moderately-drained soils, with environmental
differences that determined the richness, the spatial partition of the
tree community and the occurrence of indicator species. Thus, we
conclude that in the study forest fragment soil drainage spatial
variations were determinant in the floristicstructural heterogeneity
observed in tree community