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      Estrutura fitossociológica em área natural e antropizada de uma vereda em Uberlândia, MG Translated title: Phytosociological structure of natural and disturbed palm swampy vegetation near Uberlândia, MG

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          Abstract

          O objetivo do estudo foi de comparar a área natural e antropizada de uma vereda quanto à estrutura fitossociológica e às características do solo. O trabalho foi realizado em uma vereda no município de Uberlândia, MG (19º11'40" S e 48º24'31" W). Para as análises químicas foram coletados solos em três profundidades: 0-1 cm, 1-16 cm e 16-32 cm. No levantamento fitossociológico utilizou-se o método transecto de linha. Duas classes de solos foram encontradas: Gleissolo Háplico e Gleissolo Melânico, que tiveram, em média, baixos valores de pH e bases disponíveis. Os maiores percentuais de matéria orgânica e umidade ocorreram no fundo da vereda. Foram amostradas 101 espécies e 29 famílias vegetais. A riqueza de espécies foi menor na vertente preservada. Poaceae, Cyperaceae e Asteraceae foram as famílias que tiveram o maior número de espécies, 33, 13 e 10, respectivamente. Schizachyrium tenerum, Echinolaena inflexa, Loudetia flammida e Erianthus asper tiveram maior frequência no ambiente preservado e Schizachyrium tenerum, Hypogynium virgatum e Ageratum fastigiatum no antropizado.

          Translated abstract

          The study aimed to compare the natural and disturbed areas of a palm swamp vegetation according to its soil characteristics and phytosociological structure. The study was done at a site near Uberlândia, MG (19º11'40" S and 48º24'31" W). Chemical analysis was carried out at threes depths: 0-1 cm, 1-16 cm and 16-32 cm. The phytosociological survey was done by the line intercept method. Two classes of soil were found: Relatively Humic Glei and Humic Glei, which had low values of pH and available bases. The highest percentage of organic matter occurred in the lowest depth of the palm swamp area. Some 101 species and 29 families were sampled. The preserved slope had a lower species richness than the disturbed area. Poaceae, Cyperaceae and Asteraceae were the families with the highest number of species, 33, 13 and 10, respectively. Schizachyrium tenerum, Echinolaena inflexa, Loudetia flammida and Erianthus asper were more frequent in the preserved area and Schizachyrium tenerum, Hypogynium virgatum and Ageratum fastigiatum in the disturbed area.

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          Biostatistical Analysis

          Populations and samples. Measures of central tendency. Measures of dispersion and variability. Testing of goodness of fit. Contingency tables. The normal distribuition. One-sample hypotheses. Two-sample hypotheses; Paired-sample hypotheses. Multisample hypotheses. Multisample hypotheses. The analysis of variance. Multiple comparasion. Two factor analysis of variance. Data transformations. Multiway factorial analysis of variance. Nested (hierarchial) analysis of variance. Simple linear regression. Comparing simple linear regression equations. Simple linear correlation. Polynomial regression. The binomial distribution. The posion distribution and randomness. Circular distributions. Descriptive statistics. Circula4 distribution. Hypotheses testing.
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            A Generalized Model of the Effects of Grazing by Large Herbivores on Grassland Community Structure

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              Sistema Brasileiro de Classificação de Solos

              (1999)
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                Author and article information

                Journal
                abb
                Acta Botanica Brasilica
                Acta Bot. Bras.
                Sociedade Botânica do Brasil (Alta Floresta, MT, Brazil )
                0102-3306
                1677-941X
                September 2002
                : 16
                : 3
                : 317-329
                Affiliations
                [01] MG orgnameUniversidade Federal de Uberlândia
                [02] Uberlândia MG orgnameUniversidade Federal de Uberlândia orgdiv1Instituto de Biologia Brasil
                [03] Uberlândia MG orgnameUniversidade Federal de Uberlândia orgdiv1Instituto de Agronomia Brasil
                Article
                S0102-33062002000300007 S0102-3306(02)01600307
                99dfe77a-5703-47eb-ab03-9b348c66a9b5

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 06 January 2001
                : 22 February 2002
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 39, Pages: 13
                Product

                SciELO Brazil


                soils,palm swamp,Phytosociological,vereda,solos,Fitossociologia
                soils, palm swamp, Phytosociological, vereda, solos, Fitossociologia

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