Use este identificador para citar ou linkar para este item: repositorio.ufla.br/jspui/handle/1/14263
Título: NATURAL REGENERATION OF DEFORESTED AREAS DOMINATED BY Pteridium aquilinum (L.) Kuhn LOCATED IN THE SERRA DA MANTIQUEIRA MOUNTAIN RANGE
Autor: Ribeiro, Selma Cristina
Botelho, Soraya Alvarenga
Fontes, Marco Aurélio Leite
Garcia, Paulo Oswaldo
Almeida, Hisaías de Souza
Palavras-chave: Successional process, forest dynamic, mountain forests, ecological restoration, ecological resilience.
Publicador: CERNE
CERNE
Data: 5-Abr-2016
Outras Identificações : http://www.cerne.ufla.br/site/index.php/CERNE/article/view/877
Descrição: This study was set out with the objective of analyzing successional process in areas which are deforested and dominated by Pteridium aquilinum in the Serra da Mantiqueira mountain range, by researching the natural regeneration of shrub and tree species and evaluating both disturbance history and the edaphic conditions on the natural regeneration community. This research investigated two abandoned pasture areas in Bocaina de Minas county exposed to natural regeneration intervals ranging from six years (area named 6A) to twenty years (area named 20A). The inventory occurred from sixty plots of 10 m², where all amples surveyed were between 0.15 m and 3 m high. All samples were identified and both the diameter in ground level and total height of the specimens were measured. The survey totaled 1,159 samples and 53 species. Melastomataceae was registered with the highest species richness and the highest specimen abundance. The two sampled areas showed species composition differences, with Jaccard similarity coefficient equal to 3.7%. The canonical correspondence analysis showed the correlations between natural regeneration stratum and non-labile phosphorus and clay in the 6A area. On the other hand, the 20A area showed correlations between plant regeneration and the K, P, Ca²+, Al³+ levels, with higher pH levels, and with the sum of exchangeable bases. In addition, the vegetation surveyed in area 20A was correlated with higher Pteridium population density. The results showed that the dominance of Pteridium aquilinum leads to successional process under inhibition, in which the ferns act negatively on the richness and abundance of shrub populations. It was also confirmed the Pteridium’s affinity to steep areas, mainly in higher altitudes, where the soil is acid, as well as its preference to disturbed areas. Moreover, we highlight the fragilities of the mountain environments and the importance of preserving natural vegetation, as well as the bracken management as a strategy for forest restoration.
Idioma: eng
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