(PT) Estudo da vegetação rupestre ferruginosa na bacia de drenagem da lagoa do amendoim, Floresta Nacional de Carajás, Pará, Brasil

Author(s): RODRIGUES, Tarcísio Magevski
Summary: Within the Environmental Licensing to characterize the biotic environment, the evaluation of vegetation cover, which is the study of plant diversity of a particular obtaining license object area is needed. From the 2000s through environmental consultancies and exchanges with universities to support environmental licensing process services for mining, there were several collections of botanical species in the areas of rock and adjacent fields to the rainforests of the Carajás National Forest, with recent descriptions of new species to science. Therefore, this study objectified to analyze the floristic composition of the rock vegetation ferruginous present in peanut pond drainage basin, Serra Sul de Carajás, from floristic inventories in order to utilizadar the results in the environmental licensing process for the characterization of vegetation ferruginous rock. It has been estimated coverage and calculated the frequency, dominance and importance value (VI) species. Calculated diversity by Shannon-Wiener index (H ') and evenness evenness (J') for each habitat and the floristic similarity between another study by the Jaccard index and cluster analysis. Five sites were sampled, A, B, C, D and E, respectively. In the five areas selected were utilized Casual Simple Sampling System (random), which were allocated in total 29 Primary Units samples initially considering the sampling effort of at least 3 % of the studied area. To facilitate the collection of information by vegetation stratum and analysis of data, each primary unit was made up of three sub-plots (secondary units) superimposed, resulting in a total of 72 samples. In area A, buritizais on organic soils were only identified two species, mauritiella aculeata (Kunth) Burret and Poaceae sp.3. Groundcover area B Brejoso field were recorded eight species. The floristic composition of the area C, dense forest Capon was represented by 35 species. The floristic survey in the face area D, Hill with banded iron yoke field with Vellozia recorded 22 species and area E, Hill with sarong ferrífera shrubby field, was recorded 25 species. The cluster analysis for Capon showed 25% and 35% similarity between the species identified in the basins of the lagoons of the guitar and Peanut respectively. For the physiognomy of Rock Field, accounted for 15% and 26% similarity between the species identified in the basins of the lagoons of the guitar and Peanut respectively. The floristic diversity values showed similarities between the five studied vegetation types, where the rate did not exceed 3 nats / individuals. With the data presented, it is expected that this information can contribute to measures for the conservation of the ecosystem of ferruginous rock vegetation, together with the areas of mining exploration.
Year: 2016
Pages: 83 f.
Year of publication: 2016
Supervision: José Tasso Felix Guimarães, Dr.
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Course: Master's Degree in Sustainable Use of Natural Resources in Tropical Regions