Estudo fitossociol車gico de um trecho da floresta estacional semidecidual em Diamante do Norte, Estado do Paran芍, Brasil = Phytosociology in semi-deciduous seasonal forest fragment in Diamate do Norte, State of Paran芍, Brazil

作者：Erci Marcos Del Quiqui; Sueli Sato Martins; Ivan Crespo Silva; Wagner Antonio Borghi

来源：Acta Scientiarum - Agronomy, 2007.

• fitossociologia
• floresta estacional semidecidual
• Estado do Parana
• phytosociology
• seasonal forest
• State of Parana

O presente estudo foi realizado em uma Floresta Estacional Semidecidual de 1.426 ha, localizada na Esta o Ecol車gica do Caiu芍 (54～ 49＊W e 22～ 34＊S) em Diamante do Norte, Estado do Paran芍, Para o levantamento fitossociol車gico, foram locadas 29 parcelasgeoreferenciadas de 50 m x 30 m, totalizando 4,35 ha. Em cada parcela, foram amostrados todos os indiv赤duos com diametro 角 altura do peito (DAP) %26gt; 5,0 cm, e, em subparcelas, os indiv赤duos com DAP ㏒ 5 cm, totalizando 3.812 indiv赤duos arb車reos pertencentes a 38 fam赤lias, 85 g那neros e 102 esp谷cies. As fam赤lias Myrtaceae, Rutaceae e do grupo das Leguminosaea destacaram-se pelo elevado n迆mero de esp谷cies. Xylosma venosa, Metrodorea nigra, Chrysophyllum gonocarpum, Plinia rivularis, Eugenia uniflora, Aspidosperma polyneuron, Actinostenon concolor, Zygia cauliflora, Caesaria gossypiosperma, Blepharocalyx salicifolius, Astronium graveolens, Campomanesia xanthocarpa e Balfourodendron riedelianum destacaram-se como as esp谷cies de maior valor de importancia. O 赤ndice de diversidade de Shannon (H＊) obtido foi de 3,56 e 赤ndice de similaridade de Sorensen (ISS) neste trabalho foi de 75,5% entre os estratos avaliados. The aim of this work was to study a Semideciduous Seasonal Forest fragment. It was carried out at the Ecological Station Caiu芍 (54～ 49＊W and 22～ 34%26apos;S), in Diamante do Norte, Paran芍 State, Brazil. The study covered an area of 1.426 ha. The plots were located by GPS in that fragment. The area was divided in 29 parcels with 50 x 30 m, totalizing 4.35 ha. The individuals belonging to regeneration and the ones with DBH higher than or equal to 5.0 cm were then measured, totalizing 3,812 adult individuals, gathered into 38 families, 85 genera and 102 species. The families with the highest number of species were Myrtaceae, Rutaceae and Leguminosaea groups. Xylosmavenosa, Metrodorea nigra, Chrysophyllum gonocarpum, Plinia rivularis, Eugenia uniflora, Aspidosperma polyneuron, Actinostenon concolor, Zygia cauliflora, Caesaria gossypiosperma, Blepharocalyx salicifolius, Astronium graveolens, Campomanesia xanthocarpa and Balfourodendron riedelianum stood out as the ones with higher importance levels. Shannon diversity index (H＊) was 3.56 and the Sorensen similarity index was 75.5%.