INDICATED SPECIES TO RESTORATION OF RIPARIAN FORESTS IN SUBWATERSHED OF PEIXE-BOI RIVER, PAR\uc1 STATE

Diante da import\ue2ncia ecol\uf3gica que as florestas ciliares representam para o equil\uedbrio ambiental, este estudo objetiva indicar esp\ue9cies nativas para serem usadas na recomposi\ue7\ue3o de florestas ciliares degradadas existentes na sub-bacia do Rio Peixe-Boi. Foram inventariadas todas as \ue1rvores e arbustos com di\ue2metro a 1,30 m do solo 65 5 cm em dez \ue1reas de floresta secund\ue1ria e seis de floresta de igap\uf3. Os dados foram analisados pela An\ue1lise de Componentes Principais (ACP) e as esp\ue9cies avaliadas silviculturalmente atrav\ue9s de revis\ue3o bibliogr\ue1fica. As \ue1reas de igap\uf3 tiveram baixo \uedndice de riqueza e diversidade de Shannon, quando comparado com os dados das florestas secund\ue1rias. A composi\ue7\ue3o flor\uedstica dos igap\uf3s foi bem heterog\ueanea, e h\ue1 maior similaridade flor\uedstica entre \ue1reas de maior proximidade geogr\ue1fica. As florestas secund\ue1rias tiveram grande abund\ue2ncia de indiv\uedduos, alta riqueza, diversidade e equabilidade e foram agrupadas em fun\ue7\ue3o da proximidade geogr\ue1fica e da idade, o que est\ue1 diretamente ligado ao est\ue1dio sucessional. A an\ue1lise ACP estabeleceu a import\ue2ncia ecol\uf3gica de 29 esp\ue9cies arb\uf3reas, contudo, foram encontradas informa\ue7\uf5es silviculturais de apenas dez esp\ue9cies. Por apresentarem grande import\ue2ncia ecol\uf3gica e t\ue9cnicas silviculturais vi\ue1veis e dispon\uedveis na literatura, as esp\ue9cies de igap\uf3 Carapa guianensis , Pachira aquatica , Spondias mombin , Tapirira guianensis e Virola guianensis s\ue3o as mais indicadas para a recomposi\ue7\ue3o dessas \ue1reas, em associa\ue7\ue3o com as esp\ue9cies Inga edulis , Jacaranda copaia, Pseudopiptadenia psilostachya , Simarouba amara e Vismia guianensis de floresta secund\ue1ria, que podem ser plantadas nas \ue1reas de bordas e adjacentes \ue0s florestas de igap\uf3.This study aims to indicate native species to be used in the restoration of degraded riparian forests in the subwatershed of Peixe-Boi river. All trees and shrubs with diameter at breast height (DBH) > 5 cm were inventoried in ten areas of secondary forest and six areas of igap\uf3 forest. The results were analyzed by Principal Component Analysis and the silviculture of the species was assessed by literature review. In Igap\uf3 areas 66 species were found; the areas had low richness and low diversity index of Shannon, when compared with data from the secondary forests. The floristic composition was heterogeneous, and the floristic similarity is higher between areas that are closer geographically. In the secondary forests were found 175 species; the areas showed high abundance of individuals, high species richness, diversity and evenness. Secondary forests were separated according to geographic proximity and age, which is directly linked to the successional stage. The PCA analysis established the ecological importance of 29 tree species; however only ten species had enough silvicultural information. Due to a greater ecological importance and viable silvicultural techniques available in the literature, Carapa guianensis , Pachira aquatica , Spondias mombin , Tapirira guianensis and Virola guianensis are the most suitable species to restore the degraded areas, in association with Inga edulis , Jacaranda copaia, Pseudopiptadenia psilostachya , Simarouba amara and Vismia guianensis of the secondary forests, that can be planted in the borders and in the nearby areas of igap\uf3 forests