Structure of adult trees and regeneration component of two mangrove forests of Parana/Estrutura do componente de regeneracao natural e arboreo de dois manguezais no estado do Parana

• Published in: Ciência florestal p. 159
• Main Authors: Madi, Ana Paula Lang Ma, Boeger, Maria Regina Torres, Larcher, Leticia, Pelozo, Andressa, Sereneski, Carolina, Reissmann, Carlos Bruno, Padial, Andre Andrian
• Format: Journal Article
• Language: Spanish
• Published: Universidade Federal de Santa Maria 01-01-2016
• Subjects: Brasil
• ISSN: 1980-5098

We analyzed the structures of two mangrove forests of Parana (Brazil) (Antonina Bay and Guaratuba Bay), considering adult trees and regeneration component. In each area, we marked three sub-areas and sampled five plots of 10 x 10 m, equivalent to 0.05 ha to adults trees and fifteen 1 x lm sub-plots to assess the regeneration component. Avicennia schaneriana, Rhizophora mangle and Laguncularia racemosa exhibited distinct dominance and relative density between the areas. Mangroves of Antonina and Guaratuba differed both in the structure of natural regeneration as the tree component. The Principal Coordinates Analysis (PCoA) show that differences between areas in relation to abiotic variables of soil are strongly related to the structural parameters of trees. The different types of mangrove soil are the most significant factor in the differentiation between the mangrove areas since influences the salinity values and consequent adaptability of plants. Keywords: forest structure; mangrove; salinity; soil. Esse estudo avaliou comparativamente os parametros fitossociologicos da regeneracao natural e da vegetacao arborea em dois manguezais distintos no Estado do Parana, um pertencente a Baia de Paranagua (manguezal de Antonina) e outro a Baia de Guaratuba (manguezal de Guaratuba). Em cada area, tres subareas foram marcadas e amostradas cinco parcelas de 10 x 10 m para avaliacao do componente arboreo e quinze subparcelas de 1 x 1 m para avaliacao da regeneracao natural. Avicennia schaneriana, Rhizophorci mangle e Laguncularia racemosa exibiram dominio e densidade relativa distintos entre as areas. Manguezais de Antonina e Guaratuba diferiram tanto na estrutura da regeneracao natural como no componente arboreo. A Analise de Coordenadas Principais (PCoA) mostrou que as diferencas entre as areas em relacao as variaveis abioticas do solo estao fortemente relacionadas com os parametros estruturais do componente arboreo dos manguezais. Os fatores edaficos dos manguezais tem grande importancia na separacao entre as areas, ja que reflete na capacidade de adaptacao das plantas. Palavras-chave: fitossociologia; mangue; salinidade; solo.