Floristic composition and structure of the tree community in a sustainable use conservation unit
DOI:
https://doi.org/10.6008/CBPC2179-6858.2022.004.0004Keywords:
Amazon, Phytosociology, Rainforest, Resex CajariAbstract
This study aimed to analyze the floristic composition and horizontal structure tree species of vegetation which will undergo total suppression to make way for a transmission line for the "Luz para todos” Program, that will benefit 1,200 families approximately installed in Resex Cajari. 14.8 ha of forest were sampled systematically, allocating 74 plots of 20 m x 100 m, with all trees with DBH ≥ 9 cm, except palm and lianas. 2,798 individuals belonged to 39 botanical families and were distributed in 150 species. The families with larger species were Fabaceae with 36, Malvaceae with 10, and Annonaceae with 8. The most significant importance value species were Swartzia polyphylla, Hevea brasiliensis, and Virola surinamensis. The estimate of the total volume of wood was about 4,500 m3. The rare species should have a replacement immediately in close areas after the suppressions. The studied vegetation has a high diversity and high floristic richness, typical attributes of a protected Amazon forest in a good state of conservation. The results reinforce the importance of phytosociological studies to support sustainable management actions and prevent the extinction of rare and low-abundance species.
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