Estrutura foliar de espécies lenhosas de dossel e sub-bosque em uma floresta subtropical do sul do Brasil
Palavras-chave:
anatomia foliar, floresta estacional decidual, floresta com AraucáriaResumo
Este estudo identifi cou características morfoanatômicas foliares de espécies que ocupam diferentes estratos em uma fl oresta subtropical do sul do Brasil. A análise de componentes principais explicou 88,51 % da variação dos dados, constituindo dois grupos distintos, sendo um formado por Cedrela fi ssilis Vell., Cupania vernalis Cambess., Matayba elaeagnoides Radlk. e Nectandra lanceolata Nees & Mart. (dossel) e outro por Allophylus guaraniticus (A. St.Hill.) Radlk., Lantana brasiliensis Link. e Gymnanthes concolor Spreng. (sub-bosque), com características de plantas de sol e de sombra, respectivamente. A densidade estomática, as espessuras dos parênquimas paliçádico e esponjoso e a porcentagem de espaços de ar no parênquima esponjoso constituíram parâmetros importantes na determinação da área foliar específi ca e na caracterização morfológica das espécies de dossel e sub-bosque.
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