TREES COMMUNITIES IN SEASONALLY DRY MONTANE FORESTOF PICO DO JABRE, PARAIBA STATE/COMUNIDADES DE ARVORES NA FLORESTA ESTACIONAL SEMIDECIDUAL MONTANA DO PICO DO JABRE, PARAIBA

This study was done on a Seasonal Semideciduous Montane Forest located at Pico do Jabre state Park (06[degrees] 02'12"S and 34[degrees]45'12"W) between Matureia and Mae D'agua (PB) municipalities, placed 360 km from the sea and includes the highest regional elevation (1197 m...

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Bibliographic Details
Published in:Ciência florestal Vol. 28; no. 4; p. 1365
Main Authors: Cunha, Maria do Carmo Learth, da Silva, Manoel Claudio, Jr
Format: Journal Article
Language:Portuguese
Published: Universidade Federal de Santa Maria 01-10-2018
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Summary:This study was done on a Seasonal Semideciduous Montane Forest located at Pico do Jabre state Park (06[degrees] 02'12"S and 34[degrees]45'12"W) between Matureia and Mae D'agua (PB) municipalities, placed 360 km from the sea and includes the highest regional elevation (1197 m). It aims to investigate tree spatial distribution of populations and its association to local environmental factors to test the hypothesis that the spatial distribution of species along topographical gradient reflects different communities. To reach this target UPGMA, TWINSPAN and the indicator species analysis were complementarily applied, with significance of VI by Monte Carlo test. The results showed two floristic communities: PP including preserved plots and PAR colonizing disturbed and rocky plots. To highlight PP and PAR floristic differences a separated phyto-sociological analysis was run. Results showed distinct richness, diversity, density, low similarity and high beta diversity among communities. Byrsonima nitidifolia, and Maytenus distichophylla were found as PP indicator species and Eugenia ligustrina, Erythroxylum mucronatum and Myrciaria floribunda as PP preferential. There were no PAR indicator species. Miracrodruon urundeuva and Sapium glandulosum stood out as PAR preferential species. The indicator species analysis showed five as preserved environment and three for disturbed/rocky environment indicators, as well as, floristic and structural differences along communities, formed according to human activities and rockyness. Keywords: indicator species; Twinspan; Upgma; Northeastern. O trabalho foi realizado em uma floresta estacional semidecidual montana localizada no Parque Estadual do Pico do Jabre (06[degrees]02'12"S e 34[degrees]45'12"W), entre Matureia e Mae D'agua (PB), a 360 km da costa e apresenta a maior elevacao (1.197 m) no Nordeste setentrional. Teve como objetivo investigar a distribuicao espacial de populacoes e suas relacoes com caracteristicas ambientais locais, partindo-se da hipotese que a distribuicao espacial das especies arboreas ao longo do gradiente topografico configura comunidades floristicamente distintas. Para identificar comunidades foram aplicadas as tecnicas UPGMA e TWINSPAN, complementadas com a avaliacao de especies indicadoras (VI), com significancia do Valor de Indicacao pelo teste de Monte Carlo. Os resultados apontaram duas comunidades floristicas: a de parcelas preservadas (PP) e a de parcelas alteradas e com rochosidade (PAR), ressaltadas pelos parametros fitossociologicos estimados para ambas. Registrou-se riqueza, diversidade e densidade distintas e baixa similaridade floristica e estrutural entre as parcelas, o que caracteriza elevada diversidade beta entre as comunidades A analise de TWINSPAN apontou Byrsonima nitidifolia e Maytenus distichophylla como indicadoras de PP e Eugenia ligustrina, Erythroxylum mucronatum e Myrciaria floribunda como preferenciais, e Myracrodruon urundeuva e Sapium glandulosum como preferenciais de parcelas PAR. A analise de especies indicadoras detectou cinco especies indicadoras de ambiente preservado (PP) e tres para ambientes alterado/rochoso (PAR), assim como diferencas floristicas e estruturais nas comunidades, formadas em funcao de alteracoes antropicas e presenca de rochosidade. Palavras-chave: especies indicadoras; Twinspan; Upgma; Nordeste.
ISSN:1980-5098
1980-5098
DOI:10.5902/1980509835046