Resgate de plântulas em povoamento e fragmento florestal para produção de mudas

Abstract

The technique of seedling rescue is an alternative that can contribute to the heterogeneity in the process of forest restoration. The present study aimed to use the technique of rescue of seedlings of shrub-tree species in eucalyptus stands and natural fragment located in the Buranhém Plant, Sirinhaém, PE, as a strategy for the production of seedlings in a nursery for forest restoration. For the application of this study, 12 plots of 14 x 26 m (6 in the Eucalyptus stand and 6 in the forest fragment) were installed, among which 6 subplots of 2 x 2 m each, equidistant 10 m from one another, totaling 288 m² of area undergoing seedling retrieval, where all individuals with height ranging from 5 to 20 cm were rescued. Taxonomic identifications of the species, life form, ecological groups and dispersion syndrome were carried out. It was also evaluated the survival and growth of the seedlings in the forest nursery in different size classes. In total, 914 individuals were rescued, identified in 24 families and 70 species, with a higher percentage in the forest fragment. The mean survival rate was 53.75%. There was no statistically significant difference between the areas and height classes regarding the survival index, and the highest mortality rate occurred in the first months. Regarding height growth, there was no significant difference between height classes, but from the third month classes I and II obtained higher growth rates in height. In this way, it was verified that the seedling rescue technique is a viable alternative, it eliminates difficult steps to be carried out in the seedling production process and can contribute to the increase of diversity in forest restoration rojects.