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STUDY ON NATURAL REGENERATION, SEED BANK AND SEED RAIN IN THE GENETIC RESERVE FOREST OF CAÇADOR, SC

SUMMARY

The study was made in the Genetic Reserve Forest of Caçador, in the State of Santa Catarina, Brazil. In the study of natural regeneration were established 10 plots with an area of 250 sq m (25m x 10m). Inside the plots, were collected a layer of soil with foliage up to 3 cm of depth in the 40 samples with an area of 0,5m x 0,5m to the analyse of the seed bank in the soil. Moreover, 20 traps with an area of 0,5m x 0,5m were established to evaluate seed rain. The results obtained showed that although Araucaria angustifolia was the dominant species of the canopy layer, it did not appear in the natural important tree species found in the seed bank in the soil. The relation between the three parameters evaluated suggested an irregular distribution of the species in the study site.

Key words:
Natural regeneration; Seed bank; Araucaria Forest

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