scholarly journals REGENERAÇÃO NATURAL DE FLORESTA ESTACIONAL SEMIDECIDUAL EM DIFERENTES ESTÁGIOS SUCESSIONAIS (ZONA DA MATA, MG, BRASIL)

FLORESTA ◽  
2013 ◽  
Vol 44 (1) ◽  
pp. 111 ◽  
Author(s):  
Sustanis Horn Kunz ◽  
Sebastião Venâncio Martins
Keyword(s):  
Natural Regeneration ◽  
Species Abundance ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Importance Value ◽  
Successional Stage ◽  
Semideciduous Forest ◽  
Regeneration Stage ◽  
Successional Stages ◽  
Seasonal Semideciduous Forest

O objetivo deste estudo foi avaliar a estrutura e a composição florística da regeneração natural de trechos de Floresta Estacional Semidecidual em diferentes estágios sucessionais. Para a estrutura fitossociológica, foram demarcadas sistematicamente 10 parcelas de 5 x 10 m em trecho de floresta em estágio médio de regeneração (FEM), floresta em estágio avançado de regeneração (FEA) e pastagem abandonada (PAS), sendo amostrados os indivíduos com altura ≥ 50 cme diâmetro à altura do solo ≤ 5 cm. Foi realizada análise de correspondência retificada e análise de espécies indicadoras de cada trecho. Na estrutura da regeneração natural da FEM e da pastagem, houve destaque de apenas uma espécie (Psychotria sessilis e Vernonia polyanthes, respectivamente) quanto ao Valor de Importância (VI), devido principalmente à alta densidade. Já na FEA não foi observada forte dominância por uma espécie. As três áreas apresentaram-se distintas quanto à abundância e composição de espécies, sugerindo que a matriz florestal é composta por um mosaico sucessional. Além disso, cada trecho ainda mantém espécies indicadoras características, de acordo com o estágio sucessional em que se encontram, razão pela qual ações de manejo e enriquecimento poderiam ser adotadas para acelerar o processo de sucessão.Palavras-chave: Composição florística; conservação; estrutura; sucessão secundária. AbstractNatural regeneration of seasonal semideciduous forest in different successional stages (Zona da Mata, MG, Brazil). The objective of this study was to evaluate the floristic structure and composition of the natural regeneration of stretches from Seasonal Semideciduous Forest in different successional stages. Ten plots, 5 x 10 meters in size, were systematically delimited for phytosociological structure in patches of forest which were in intermediate regeneration stage (FEM), advanced regeneration stage (FEA) and abandoned pasture (PAS).We sampled the individuals with ≥ 50 cm in height and diameter at ground height ≤ 5 cm. We performed Detrended Correspondence Analysis and analysis of indicative species of each forest section. In the natural regeneration structure of FEM and pasture it was featured only one species (Psychotria sessilis and Vernonia polyanthes, respectively) in the Importance Value (IV), mainly due to high density. In relation to the FEA there was no strong dominance by one species. The three sections showed distinct species abundance and composition, which suggests that the forest matrix comprises a successional mosaic. Furthermore, each stretch still maintains indicative characteristic species, according to the successional stage they are in. Because of this, management and enrichment actions could be performed to accelerate the succession process.Keywords: Floristic composition; conservation; structure; secondary succession.

scholarly journals SOIL SEED BANK IN SEASONAL SEMIDECIDUOUS FOREST AND ABANDONED PASTURE

2016 ◽  
Vol 40 (6) ◽  
pp. 991-1001 ◽  
Author(s):  
Sustanis Horn Kunz ◽  
Sebastião Venâncio Martins
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Life Forms ◽  
Successional Stage ◽  
Semideciduous Forest ◽  
Regeneration Stage ◽  
Significant Difference ◽  
Successional Stages ◽  
Pasture Area ◽  
Seasonal Semideciduous Forest

ABSTRACT The objective of this study was to characterize the seed bank in the soil of different successional stages of Seasonal Semideciduous Forest and abandoned pasture in order to understand the natural regeneration potential of these areas. At each successional stage, 30 samples of soil were collected in the rainy and dry seasons to evaluate the qualitative heterogeneity of the forest, at the regeneration stage (FEA) forest, intermediate regeneration stage forest (ISF) and pasture (PAS). The species were classified according to the life form, successional group and dispersion syndrome. The number of individuals germinated was significantly higher (p < 0.001) in the ISF and in the rainy season (15,949 individuals). Richness was higher in the pasture area (79 species), with a significant difference only between the environments. Most species are herbaceous (49.5%), pioneers (76.5%) and zoocory was the main dispersion syndrome (49% of species). The results show that seed bank in the fragment of the regeneration advanced stage forest presents the highest resilience potential, since it is formed by different life forms and, mainly, by early and late secondary species.

scholarly journals An Ecological Comparison of Floristic Composition in Seasonal Semideciduous Forest in Southeast Brazil: Implications for Conservation

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Sérgio de Faria Lopes ◽  
Ivan Schiavini ◽  
Ana Paula Oliveira ◽  
Vagner Santiago Vale
Keyword(s):  
Indicator Species ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Southeastern Brazil ◽  
Successional Stage ◽  
Semideciduous Forest ◽  
Hymenaea Courbaril ◽  
Forest Sites ◽  
Copaifera Langsdorffii ◽  
Seasonal Semideciduous Forest

We examined floristic patterns of ten seasonal semideciduous forest sites in southeastern Brazil and conducted a central sampling of one hectare for each site, where we took samples and identified all individual living trees with DBH (diameter at breast height, 1.30 m) ≥4.8 cm. Arboreal flora totaled 242 species, 163 genera, and 58 families. Fabaceae (38 species) and Myrtaceae (20 species) were families with the largest number of species. OnlyCopaifera langsdorffiiandHymenaea courbariloccurred at all sites. Multivariate analysis (detrended correspondence analysis and cluster analysis) using two-way indicator species analysis (TWINSPAN) indicated the formation of a group containing seven fragments in whichSiparuna guianensiswas the indicator species. This analysis revealed that similarities between studied fragments were due mainly to the successional stage of the community.

scholarly journals SEED BANK IN TWO SITES OF SEMIDECIDUOUS SEASONAL FOREST IN VIÇOSA, MINAS GERAIS

2016 ◽  
Vol 40 (3) ◽  
pp. 415-425 ◽  
Author(s):  
Antonio Jorge Tourinho Braga ◽  
Eduardo Euclydes de Lima e Borges ◽  
Sebastião Venâncio Martins
Keyword(s):  
Seed Bank ◽  
Floristic Composition ◽  
Soil Samples ◽  
Semideciduous Forest ◽  
Bank Levy ◽  
Successional Stages ◽  
Semideciduous Seasonal Forest ◽  
The Individual ◽  
Seasonal Semideciduous Forest ◽  
Distinct Period

ABSTRACT Aimed of this study was examine, describe and confronted the floristic composition and the density the seed bank in two successional stages of Seasonal Semideciduous Forest, in Viçosa, MG. Forty soil samples total in two distinct period (drought station finish and rainy station finis) and arranged for germinate in wooden boxes (0,5 x 0,5 x 0,1 m) in shading of 60%. The individual germination in each valuation epoch was compared utilizing the t test for independent samples; the test indicated one individual plants germination major in seed bank levy intermediary between epoch drought station finis and rainy station. Hundred nine taxons were sampled in the seed bank the forest altogether, 101 species were identified as belonging to 73 genera distributed among 40 families, 56 species commonness in two successional stages of forest and 49 species commonness of two levy period. Asteraceae was the families with the largest number of species as initial forest much as advanced forest, in both period of valuation. The herbaceous individuals predomination in all forests and valuation epoch, whit not representation the fragility of the seed bank.

scholarly journals SOIL FAUNA AND LEAF LITTER DECOMPOSITION IN DIFFERENT SUCCESSIONAL STAGES OF A SUBMOUNTAINOUS SEASONAL SEMIDECIDUOUS FOREST

FLORESTA ◽  
2021 ◽  
Vol 51 (2) ◽  
pp. 429
Author(s):  
Rodrigo Camara ◽  
Marcos Gervasio Pereira ◽  
Luciano Oliveira Toledo ◽  
Carlos Eduardo Gabriel Menezes
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Soil Fauna ◽  
Dry Season ◽  
Leaf Litter Decomposition ◽  
Successional Stage ◽  
Semideciduous Forest ◽  
Litter Bags ◽  
Successional Stages ◽  
Seasonal Semideciduous Forest

In tropical forests, the stage of ecological succession influences the nutrient cycling. This study aimed to analyze soil fauna community structure, composition, and leaf litter decomposition in fragments of intermediate-successional and late-successional Submountainous Seasonal Semideciduous Forest (ISF and LSF, respectively). We used a square metal frame to collect 10 samples of the leaf litter layer and surface soil (0.00-0.05 m depth) from each area in the wet and dry seasons. Soil fauna individuals were then extracted using a modified Berlese-Tüllgren funnel. For analysis of leaf litter decomposition, 15 litter bags containing 30 g of senescent leaves were randomly placed on the forest floor of each area in the dry season, and three bags were collected after 60, 90, 120, 150, and 180 days. LSF presented higher value of richness and was more associated with Diptera and Formicidae. There was no clear pattern in evenness and diversity with successional stage. The dissimilarity between ISF and LSF in terms of soil fauna community was greater in the dry season. Litter decomposition was almost identical in both areas.

scholarly journals Short-term effects of passive restoration in springs habitats in Southern Brazil

2021 ◽  
Vol 51 (8) ◽  
Author(s):  
Bruna Balestrin Piaia ◽  
Ana Paula Moreira Rovedder ◽  
Idiane Fátima Giacomini ◽  
Roselene Marostega Felker ◽  
Maureen de Moraes Stefanello ◽  
...  
Keyword(s):  
Ecological Restoration ◽  
Natural Regeneration ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Rio Grande Do Sul ◽  
Short Term ◽  
Successional Stage ◽  
Passive Restoration ◽  
Floristic Patterns ◽  
Composition Pattern

ABSTRACT: This study analyzed natural regeneration floristic patterns in spring habitats submitted to different ecological restoration actions in the seasonal forest in Atlantic Forest biome, Rio Grande do Sul. We assessed floristic composition in six springs before restoration actions and 12 months later. We identified and counted all regenerating individuals with height greater than or equal to 30 cm and diameter at breast height less than or equal to 5 cm in eight plots in each spring. The richness and abundance of each spring and assessment were compared by the Kruskal-Wallis test (P<0.05). Detrended Correspondence Analysis (DCA) was performed to verify floristic patterns and association between species. Results showed an increase in richness and abundance after ecological restoration implementation. The DCA showed a distinct floristic composition between springs. The springs remaining natural vegetation and the successional stage of these vegetation influenced the natural regeneration floristic composition pattern. Passive restoration, which was effective by enclosure, favored natural regeneration recruitment.

Comparison of the woody flora and soils of six areas of montane semideciduous forest in southern Minas Gerais, Brazil

1994 ◽  
Vol 51 (3) ◽  
pp. 355-389 ◽  
Author(s):  
A. T. Oliveira-Filho ◽  
E. A. Vilela ◽  
M. L. Gavilaness ◽  
D. A. Carvalho
Keyword(s):  
Community Structure ◽  
Detrended Correspondence Analysis ◽  
Floristic Composition ◽  
Rio Grande ◽  
Minas Gerais ◽  
Southeastern Brazil ◽  
Semideciduous Forest ◽  
Qualitative And Quantitative ◽  
Gallery Forests ◽  
Upper Rio Grande

Qualitative and quantitative descriptions of the woody flora and soil analyses are provided for six areas of montane semideciduous forest in the upper Rio Grande region, southern Minas Gerais, Brazil. Comparisons are made of the floristic composition of these six areas and 24 other forest areas of southeastern Brazil using ordination by detrended correspondence analysis (DCA) and hierarchical classifications, both agglomerative (upgma) and divisive (twinspan). The variation in community structure of five of the six forest areas was analysed using a two-way table yielded by twinspan. The floristic analyses indicated the strongest link between the forests of the upper Rio Grande region and other montane forest formations of southeastern Brazil as well as secondary links with the gallery forests that extend into the cerrado domain and the submontane semideciduous forests of the Rio Parana basin. Variations in community structure among the five forest areas were apparently associated mainly with riverside effects and soil fertility.

scholarly journals Floristic composition of the Seasonal Semideciduous Forest in Southern Brazil: Reserva Biológica das Perobas, State of Paraná

2018 ◽  
Vol 40 (1) ◽  
pp. 35753
Author(s):  
Greta Aline Dettke ◽  
Laianne Mayara Pezenti Crespão ◽  
Luciana Veríssimo Siquerolo ◽  
Edemilson Luiz Siqueira ◽  
Marcelo Galeazzi Caxambú
Keyword(s):  
Floristic Composition ◽  
Southern Brazil ◽  
Semideciduous Forest ◽  
Seasonal Semideciduous Forest

Floristics and Structure of Arboreal Components in a Restored Atlantic Forest Area

2020 ◽  
Author(s):  
Wiane Meloni Silva ◽  
Sebastião Venâncio Martins ◽  
Ricardo Alcántara de la Cruz ◽  
Carlos Moreira Miquelino Eleto Torres ◽  
Luiz Henrique Elias Cosimo ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Basal Area ◽  
Floristic Composition ◽  
Ecological Group ◽  
Average Height ◽  
Importance Value ◽  
Successional Stage ◽  
Forest Remnants ◽  
Semideciduous Seasonal Forest ◽  
Guarea Guidonia

Abstract Background: Coffee and livestock degrade Seasonal Semideciduous Forests in the Zona da Mata region of the Atlantic Forest biome in Brazil. The floristic composition must be studied to preserve and conserve forest remnants. The objective was to evaluate the arboreal structure, characterize the seed dispersal syndrome and the ecological group of forest species of a 45-year-old restored area in Viçosa, Minas Gerais state, Brazil. The phytosociological parameters density, frequency, dominance and importance value, Shannon's diversity and Pielou's equability were evaluated considering individuals with DBH (diameter at breast height) ≥ 5 cm in sixteen contiguous plots (25 x 25 m). Results: A total of 1,323 individuals from 109 species and 35 botanical families were registered, of which 90 were native and 15 exotic species. The importance value (VI= 11.9%) was highest for Guarea guidonia (Fabaceae). The Shannon's diversity (H') was 3.46 and the equability (J') was 0.74. The number of species (33%) was largest for the initial secondary successional class and the number of individuals with zoochoric dispersion syndrome for the late secondary class (38.3%). The basal area was 44.1 m² ha-1 and the average height was 13 m (ranging from 2 to 32 m). Conclusion: The restored Semideciduous Seasonal Forest is in an advanced successional stage with zoochoric species and a great number of late secondary species.

scholarly journals ASPECTOS FLORÍSTICOS DE TRÊS ESTÁGIOS SUCESSIONAIS DE MATA CILIAR EM ARROIO DO PADRE, EXTREMO SUL DA MATA ATLÂNTICA

FLORESTA ◽  
2013 ◽  
Vol 43 (2) ◽  
pp. 191
Author(s):  
Tiago Schuch Venzke ◽  
Sebastião Venâncio Martins
Keyword(s):  
Forest Restoration ◽  
Secondary Forest ◽  
Riparian Forest ◽  
Floristic Composition ◽  
Primary Forest ◽  
Successional Stage ◽  
Regeneration Time ◽  
Mature Forest ◽  
Successional Stages ◽  
South Of Brazil

 O objetivo foi caracterizar a composição e as relações florísticas de estágios sucessionais de uma mata ciliar em um fragmento de Floresta Estacional Semidecidual no Município de Arroio do Padre, extremo sul do Brasil. A área amostral foi 1,2 ha, dividida em 0,2 ha para capoeira (5 anos de regeneração), 0,5 ha para floresta secundária (45 anos de regeneração) e 0,5 ha de floresta madura. Em parcelas de 10 x 10 m, foram amostrados todos os indivíduos arbustivo-arbóreos com DAP ≥5 cm. A riqueza nos três estágios sucessionais revelou 72 espécies, distribuídas em 52 gêneros e 33 famílias. A capoeira apresentou menor número de táxons, enquanto na fase madura ocorreram maior quantidade (49) e riqueza de espécies exclusivas (20). A composição florística foi influenciada pelo estágio sucessional, e a classificação das parcelas pela análise de similaridade formou agrupamentos conforme a idade da regeneração. Isso reflete a adaptação da comunidade às condições ambientais proporcionadas pelo avanço da sucessão ecológica. Assim, recomenda-se que as estratégias de restauração florestal considerem as espécies adaptadas ao estágio sucessional, a fim de maximizar os projetos de reflorestamento e restauração ecológica.Palavras-chave: Pelotas; Floresta Estacional Semidecidual; sucessão florestal; ecologia florestal. AbstractFloristic composition of three successional stages of a riparian forest in the municipality of Arroio do Padre, very south of Brazil. This research aims to characterize composition and floristic relations of three successional stages of a Riparian Semi-deciduous Seasonal Forest, in the municipality of Arroio do Padre, South of Brazil. The sample area was divided into 0.2 ha for ‘capoeira’ (five years of regeneration), 0.5 ha for secondary forest (45 years for regeneration), and 0.5 ha for mature forest (primary forest). Richness in the three succession stages included 72 species distributed into 52 genera and 33 families. ‘Capoeira’ presented lower quantity of taxa, whereas in the mature forest occurred greater number of species (49) and exclusive species (20). The floristic composition was influenced by successional stage and classification of plots by the similarity analysis clusters formed as the regeneration time. Differences in floristic composition reflect community adaptation to the conditions provided along succession. These variations reveal that the age of the succession reflects in forest floristic, and strategies for forest restoration should consider species adapted to successional stages in order to maximize native forests reforestation projects.Keywords: Municipality of Pelotas; Semi-deciduous Seasonal Forest; forest ecology.

scholarly journals VARIAÇÕES NA COMPOSIÇÃO FLORÍSTICA EM FLORESTA ESTACIONAL SEMIDECIDUAL EM CURVELO-MG

Nativa ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 109
Author(s):  
Leovandes Soares da Silva ◽  
Thais Ribeiro Costa ◽  
Arthur Duarte Vieira ◽  
Stênio Abdanur Porfírio Franco ◽  
Evandro Luiz Mendonça Machado
Keyword(s):  
Diversity Index ◽  
Floristic Composition ◽  
Floristic Diversity ◽  
Semideciduous Forest ◽  
Minimum Diameter ◽  
Breast Height ◽  
Number Of Individuals ◽  
Composition Changes ◽  
Seasonal Semideciduous Forest ◽  
Over Time

O objetivo desse estudo foi avaliar as mudanças na composição florística em um fragmento de Floresta Estacional Semidecidual. No primeiro inventário realizado em 2011 foram alocadas 25 parcelas de 10 ×40 m. Foram mensurados todos os indivíduos vivos com diâmetro a altura do peito ≥ 5cm. O segundo inventário foi realizado em 2015, utilizando-se os mesmos critérios do inventário anterior, assim, foram incorporados os novos indivíduos (recrutas) que atingiram o diâmetro mínimo de inclusão. O correram mudanças na composição florística, a mortalidade dos indivíduos foi superior ao recrutamento, houve perda de cinco espécies e incremento de duas espécies. O número de espécies e a densidade dos indivíduos variaram com o tempo. As espécies que desapareceram eram representadas por poucos indivíduos. A perda de espécies refletiu no índice de diversidade de Shannon (H’) e equabilidade de Pielou, (H’passou de 4,05 para 3,99 e equabilidade de Pielou J’ de 0,83 para 0,82), no primeiro e segundo inventário respectivamente, mesmo assim, os valores apontam para uma diversidade florística elevada. As mudanças na composição florística não foram significativas, a perda de espécies teve relação com as menos representativas em número de indivíduos, entre os inventários a floresta se manteve estável.Palavras-chave: mortalidade, recrutamento, sucessão ecológica. VARIATIONS IN THE FLORISTIC COMPOSITION IN SEASONAL SEMIDECIDAL FORESTS IN CURVELO-MG ABSTRACT: The objective of this study was to evaluate the changes in floristic composition in a fragment of Seasonal Semideciduous Forest. In the first inventory carried out in 2011, 25 plots of 10 × 40m were allocated. All living individuals with a breast height diameter ≥5 cmwere measured. The second inventory was carried out in 2015, using the same criteria of the previous inventory, thus, were incorporated the new individuals (recruits) that reached the minimum diameter of inclusion. The floristic composition changes, the mortality of the individuals was superior to the recruitment, there were loss of five species and increase of two species. The number of species and the density of individuals varied over time. The species that disappeared were represented by few individuals. The loss of species reflected in the diversity index of Shannon (H ') and Pielou equability, (H' went from 4.05 to 3.99 and Pielou J 'equability from 0.83 to 0.82), in the first and second inventory respectively, even so, the values point to a high floristic diversity. The changes in floristic composition were not significant, the loss of species was related to the less representative in number of individuals, among the inventories the forest remained stable.Keywords: mortality, recruitment, ecological succession.

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