STRUCTURE AND FLORISTIC COMPOSITION IN A DENSE OMBROPHILOUS FOREST AREA UNDER FOREST MANAGEMENT

This study shows the phytosociology and floristics of a Dense Ombrophilous Forest fragment under forest management in Portel city, Pará State. Six conglomerates were sampled, divided into secondary and tertiary plots totaling 120 sample units of 0.4 hectares each, in which all trees with diameter at breast height (130 cm above ground; DBH) above 10 cm were measured. These individuals were botanically identified, and evenness and floristic similarity were calculated. There were 3,586 individuals distributed in 42 families, 121 genera, and 174 species. Families Fabaceae, Lecythidaceae, and Sapotaceae were the ones that obtained the highest IVI and the highest representativity of individuals. Species Eschweilera coriacea (DC.) S.A.Mori, Vouacapoua americana Aubl., and Tetragastris altissima (Aubl.) Swart were the ones with the highest IVI. Among the ten highest results, we highlight Syzygiopsis oppositifolia Ducke and Manilkara dardanoi Ducke, with great potential for timber production. The Shannon diversity index averaged 3.83 between the plots, and the Pielou evenness averaged 0.84, showing that the area presents high floristic diversity and great potential for forest management activities.

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

Nativa ◽

10.31413/nativa.v7i1.6508 ◽

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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How Bovine Livestock Affects Seed Rain in Subtropical Climate Forest

Journal of Agricultural Science ◽

10.5539/jas.v11n10p240 ◽

2019 ◽

Vol 11 (10) ◽

pp. 240

Author(s):

Maureen de Moraes Stefanello ◽

Ana Paula Moreira Rovedder ◽

Roselene Marostega Felker ◽

Matheus Degrandi Gazzola ◽

Betina Camargo ◽

...

Keyword(s):

Diversity Index ◽

Morphological Characteristics ◽

Floristic Composition ◽

Seed Rain ◽

Subtropical Climate ◽

Floristic Similarity ◽

Management Regime ◽

Pampa Biome ◽

Forest Remnants ◽

History Of

Seed rainfall may be one of the mechanisms most impacted by livestock production in forest remnants. The trampling and cattle grazing alter dynamics, structure and floristic composition of the forest. The present work characterized the seed rainin forest remnants and the possible impacts of the presence and the management regime with different cattle stocks in the Pampa biome, southern region of Brazil. We compared three areas in Seasonal Forest remnants with a management history of 43 years: cattle exclusion area (A1); area with a cattle stock of 0.5 ua ha-1 (A2); and area with cattle stock of 1.0 ua ha-1 (A3). The seed rain was collected quarterly in 16 collectors (1 × 1 m²) per area for 24 months. The seeds were counted and identified according to external morphological characteristics, habit and dispersion syndrome. Shannon diversity index, submitted to the Hutcheson test, Pielou evenness, expected diversity and floristic similarity were determined. The results indicated that the impacts caused by livestock to seed rain were more significant in A3 where a quantitative reduction in the number of seeds was observed, probably due to the low number of plant individuals that make up the community.

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Floristic and structure of the arboreal community of an Ombrophilous Dense Forest at 800 m above sea level, in Ubatuba/SP, Brazil

Biota Neotropica ◽

10.1590/1676-0611-bn-2018-0590 ◽

2018 ◽

Vol 18 (4) ◽

Author(s):

Ana Cláudia Oliveira de Souza ◽

Luís Benacci ◽

Carlos Alfredo Joly

Keyword(s):

Sea Level ◽

Diversity Index ◽

Floristic Composition ◽

Strong Similarity ◽

Breast Height ◽

Palm Trees ◽

Tree Community ◽

Dense Forest ◽

Metadata Generation

Abstract: Undoubtedly, the publication of floristic lists and phytosociological studies are important tools for metadata generation, quantification and characterization of the megadiversity of Brazilian forests. In this sense, this work had the objective of describing the composition and the structure of the tree community of one hectare of Dense Atlantic Rainforest, at an altitude of 800 m. All individuals, including trees, palm trees, arborescent ferns and dead and standing stems, with a diameter at breast height (DBH) of ≥ 4.8 cm were sampled. After the identification of the botanical material, we proceeded to calculate the usual phytosociological parameters, besides the Shannon diversity index (H') and Pielou equability index (J). A total of 1.791 individuals were sampled, of which 1.729 were alive, belonging to 185 species, 100 genera and 46 families. The results obtained showed a strong similarity of structure and floristic composition with plots of both Montana and Sub Montana Ombrophilous Dense Forest studied in the same region. This reinforces the hypothesis that the transition between the phytophysiognomies of the Atlantic Ombrophylous Dense Forest is gradual, and that the boundaries between them cannot be clearly established.

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NATURAL REGENERATION STRATUM AS AN INDICATOR OF RESTORATION IN AREA OF ENVIRONMENTAL COMPENSATION FOR MINING LIMESTONE, MUNICIPALITY OF BARROSO, MG, BRAZIL

Revista Árvore ◽

10.1590/0100-67622016000200001 ◽

2016 ◽

Vol 40 (2) ◽

pp. 189-196 ◽

Cited By ~ 2

Author(s):

Wanuza Helena Campos ◽

Sebastião Venâncio Martins

Keyword(s):

Significant Influence ◽

Natural Regeneration ◽

Riparian Vegetation ◽

Diversity Index ◽

Floristic Composition ◽

Psidium Guajava ◽

Floristic Diversity ◽

Restoration Process ◽

Number Of Species ◽

Management Actions

ABSTRACT This study was conducted in a forest under restoration process, which belongs to the company Holcim Brasil S/A, in the municipality of Barroso, state of Minas Gerais (21º00'to 22º00'S and 43º00' to 44º00'W), where 40 plots (2 x 2 m) were set, spaced at 10 m, forming eight strata parallel to the watercourse present in the area. Floristic composition and natural regeneration stratum were characterized, and the formed strata allowed evaluating whether the riparian vegetation and watercourse influence on the local regeneration. It was found 162 individuals of 13 families, 18 genera and 22 species, and 10,125 individuals/ha were estimated. Successional classes from pioneer and early secondary and zoochory dispersion syndrome prevailed among species and individuals. The watercourse and riparian vegetation did not exercise significant influence (p> 0.05) on the number of species and regenerating individuals among the different strata of the forest. The diversity index of Shannon-Wiener (H') and equability of Pielou (J') were 2.691 and 0.870, respectively. The species Psidium guajava and Myrtaceae families presented the highest VI (value of importance). Natural regeneration analysis showed the low floristic diversity in the area, suggesting that corrective management actions should be adopted.

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Floristic Composition and Community Structure of Epiphytic Angiosperms in an Urban Forest Fragment in the Eastern Amazon

Research in Ecology ◽

10.30564/re.v3i4.3830 ◽

2021 ◽

Vol 3 (4) ◽

Author(s):

Josélia Rozanny Vieira Pacheco ◽

Felipe Fajardo Villela Antolin Barberena

Keyword(s):

Community Structure ◽

Urban Forest ◽

Diversity Index ◽

Species Conservation ◽

Floristic Composition ◽

Neotropical Region ◽

Forest Fragments ◽

Forest Fragment ◽

Importance Value ◽

Vascular Epiphytes

Vascular epiphytes are one of the most important forest components, contributing to microclimatic maintenance. These plants find ideal conditions for development in the Amazon due to the spatial heterogeneity and high temperature and humidity typical of this biome. In recent years, the Brazilian Amazon has undergone dramatic changes in its landscape, mainly due to the increase in deforestation and fire rates. We present here the floristic composition and analyze the community structure of epiphytic angiosperms of an urban forest fragment in Eastern Amazon. A total of 71 epiphytic individuals were recorded belonging to eight species and four families. Orchidaceae was the most representative family, corroborating the pattern for surveys of epiphytic diversity in the Neotropical region. Epiphytic species were found on 24 individuals of 10 tree species. The epiphytic importance value (IVe) was low for all species, except for Aechmea tocantina and Rhipsalis baccifera. Cactaceae was the family with the highest IVe. Most epiphytes were found in the crown of trees (83.1%). The diversity index of the fragment was H’ = 1.80 and the equity index was J= 0.87, reflecting the absence of highly dominant species. Conservation of urban forest fragments is necessary for the maintenance of epiphytic flora and ecosystem services.

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CARACTERIZAÇÃO FLORÍSTICA E ESTRUTURAL DE UM FRAGMENTO DE FLORESTA OMBRÓFILA MISTA, EM CURITIBA, PR – BRASIL

FLORESTA ◽

10.5380/rf.v32i1.2366 ◽

2002 ◽

Vol 32 (1) ◽

Cited By ~ 5

Author(s):

Rubens Marques Rondon Neto ◽

Carina Kozera ◽

Regina do Rocio De Andrade ◽

Adriana Trippia Cecy ◽

Ana Paula Hummes ◽

...

Keyword(s):

Diversity Index ◽

Floristic Composition ◽

Total Density ◽

Araucaria Angustifolia ◽

Forest Fragment ◽

Importance Value ◽

Important Species ◽

Casearia Sylvestris ◽

Index Value

O presente trabalho teve como objetivo conhecer a composição florística e a estrutura dos indivíduos arbóreos com DAP ³ 5cm presentes em um fragmento de Floresta Ombrófila Mista (Floresta com Araucária), denominado “Capão do Tigre”, situado em Curitiba - PR. Em dezoito parcelas de 10 x 20m foram inventariados 710 indivíduos, distribuídos em 77 espécies, pertencentes a 36 famílias e 55 gêneros. O valor do índice de diversidade Shannon para as espécies foi de 3,437. A densidade total estimada foi de 1.972 indivíduos/ha e os valores médios de DAP e altura encontrados foram 11,6 cm e 8,2 m, respectivamente. De acordo com o parâmetro valor de importância ampliado, as espécies mais importantes foram Casearia sylvestris, Allophylus edulis, Luehea divaricata, Araucaria angustifolia, Cupania vernalis, Ocotea corymbosa, Ocotea nutans, Jacaranda puberula, Mollinedia clavigera e Solanum sanctae-catharinae. FLORISTIC AND STRUCTURAL CHARACTERIZATION OF A FRAGMENT OF MIXED OMBROPHYLOUS FOREST IN CURITIBA, PR - BRAZIL Abstract The aim of this paper was to know the floristic composition and the structureof a Mixed Ombrophylous Forest fragment (Araucaria Forest), named “Capão do Tigre”, situated in Curitiba - PR. It was inventoried 710 trees individuous in eighteen 10 x 20 m plots with DBH ³ 5cm, distributed in 77 species from 55 gender and 36 families. The Shannon diversity index value was 3,437 for the species. The total density found was 1.972 individuous/ha, and the medium DBH and height was 11,6 cm and 8,2 m, respectively. Acording to the parameters of Amplieted Importance Value, the most important species are: Casearia sylvestris, Allophylus edulis, Luehea divaricata, Araucaria angustifolia, Cupania vernalis, Ocotea corymbosa, Ocotea nutans, Jacaranda puberula, Mollinedia clavigera e Solanum sanctae-catharinae.

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BEHAVIOR OF THE DIAMETRIC DISTRIBUTION OF ECOLOGICAL GROUPS IN A MIXED OMBROPHILOUS FOREST FRAGMENT

FLORESTA ◽

10.5380/rf.v48i3.56466 ◽

2018 ◽

Vol 48 (3) ◽

pp. 413

Author(s):

Thiago Wendling Gonçalves de Oliveira ◽

Rafael Schmitz ◽

Jorge Danilo Zea Camaño ◽

Ana Paula Dalla Corte ◽

Carlos Roberto Sanquetta

Keyword(s):

Forest Management ◽

Conservation Management ◽

Management Strategies ◽

Sustainable Use ◽

Ecological Groups ◽

Natural Forests ◽

Forest Fragment ◽

Probability Functions ◽

Ombrophilous Forest ◽

Over Time

The Mixed Ombrophilous Forest is one of the most threatened ecosystems in Brazil. It is thus necessary to understand its dynamics of growth over time so that sustainable use and conservation management strategies be proposed. The objective of this study is to evaluate the behavior of the diametric distribution of two pioneer and non-pioneer ecological groups in a fragment of Mixed Ombrophilous Forest considering four years of evaluations: from 2002 to 2017. Exponential, Gamma, Weber and Weibull 3P density probability functions were adjusted. The diametric behavior of the forest and the ecological groups analyzed remained negative exponentially, being a characteristic of natural forests. The distributions that best adjusted were Weibull 3P for the forest as a whole and for the group of pioneers, and Weber for non-pioneers. We concluded that ecological groups have the same pattern of diametric distribution as the forest as a whole. However, different forest management strategies are necessary considering the intrinsic characteristics of each group.

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DINÂMICA DA FLORÍSTICA E DA ESTRUTURA HORIZONTAL EM UM FRAGMENTO DE FLORESTA OMBRÓFILA MISTA MONTANA

Nativa ◽

10.31413/nativa.v7i6.7835 ◽

2019 ◽

Vol 7 (6) ◽

pp. 748

Author(s):

Mailson Roik ◽

Afonso Figueiredo Filho ◽

Tiago Grespan ◽

Thiago Floriani Stepka ◽

Rodrigo Otávio Veiga de Miranda

Keyword(s):

Multivariate Analysis ◽

Floristic Composition ◽

Southern Region ◽

National Forest ◽

Forest Fragments ◽

Forest Fragment ◽

Horizontal Structure ◽

Araucaria Forest ◽

Breast Height ◽

Great Heterogeneity

Este trabalho objetivou analisar as alterações na composição florística e estrutura horizontal em um fragmento de Floresta Ombrófila Mista, localizado na Floresta Nacional (FLONA) de Irati, Paraná, Brasil, assim como compará-lo quanto à florística e estrutura de outros fragmentos florestais localizados em FLONAs da região sul do país. Todos os indivíduos com diâmetro à altura do peito maior ou igual a 10 cm (DAP ≥ 10 cm) foram identificados e mensurados ao longo de nove anos. A floresta apresentou elevada riqueza de espécies ao longo do período de monitoramento e pequenas alterações em relação a sua composição florística e estrutura horizontal. As divergências florístico-estruturais entre os fragmentos utilizados para comparação com o presente estudo se devem principalmente à grande heterogeneidade intrínseca a esta fitofisionomia, como também ao aumento da dissimilaridade em função do distanciamento geográfico.Palavras-chave: análise multivariada; composição florística; fitossociologia; Floresta com Araucária. DYNAMICS OF FLORISTIC AND HORIZONTAL STRUCTURE IN A FRAGMENT OF MONTANE MIXED OMBROPHYLOUS FOREST ABSTRACT: The aim of this research was to analyze the changes on the floristic composition and horizontal structure in an Araucaria Forest fragment, located in the Irati National Forest (FLONA), Paraná State, Brazil, as well as comparing it to the floristic and structure of other forest fragments located in FLONAs of the southern region of the country. All the individuals with diameter at breast height equal or larger than 10 cm (DBH ≥ 10 cm) were identified and measured for nine years. The forest presented a high number of species during the monitoring period and few changes in floristic composition and horizontal structure. The floristic-structural divergences among the fragments used for comparison with the present study are mainly due to the great heterogeneity intrinsic to this phytophysiognomy, as well as to the increase of dissimilarity due to geographic distance.Keywords: Araucaria forest; floristic composition; multivariate analysis; phytosociology.

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ABUNDANCE OF TREES USED AS FOOD BY PRIMATES IN FRAGMENTS OF ATLANTIC FOREST

ENVIRONMENTAL SMOKE ◽

10.32435/envsmoke.20181120-41 ◽

2018 ◽

Vol 1 (1) ◽

pp. 20-41

Author(s):

Valdecir Da Silva ◽

Vera Lúcia da Silva ◽

Válter Da Silva ◽

Dimítri De Araújo Costa ◽

Francisco De Assis da Silva ◽

...

Keyword(s):

Atlantic Forest ◽

Beta Diversity ◽

Diversity Index ◽

Floristic Composition ◽

Primate Species ◽

Forest Fragments ◽

Forest Fragment ◽

Forest Diversity ◽

Large Size ◽

Historical Factors

Forest fragmentation favours the propagation of some arboreal primate species that can alter the floristic composition of a community. This process may be associated with the loss of seed dispersants. In this work we propose to identify if the presence of frugivorous primates of medium and large size (Sapajus flavius and Alouatta belzebul) can influence forest diversity and structure. Further, we ask if the size of the fragment affects the availability of resources for these primates. Three fragments were studied in the Atlantic Forest of the State of Paraíba, Brazil, located in the municipalities of Sapé, Mamanguape, Rio Tinto, and Mataraca. In each area 25 plots of 50 x 4 m were delimited, randomly distributed along trails and transects. All trees with chest-high circumferences (CAP) above 12 cm found within the plots were marked with ribbons, and numbered continuously. A total of 114 plant species were documented in the Pacatuba Forest, 79 in the Asplan Forest, and 97 in the “Guaribas” (Sema III) Biological Reserve (REBIO) Forest. According to the Chao and Jacknife estimators, the REBIO Guaribas Forest can present more species than recorded in the present investigation. Species Tapirira guianensis, Protium giganteum and Protium heptaphyllum are the most abundant in the Asplan, Pacatuba and Sema III Forests, respectively. In the REBIO Guaribas Forest, the Shannon diversity index was (H') = 3.75, the Alpha-Fisher index was = 26.57 and the Simpson index (1-D) was = 0.90. Pacatuba was the forest fragment with the highest index of diversity (H') = 375, Alpha-Fischer = 33.74 and Simpson (1-D) = 0.95. Pacatuba and REBIO Guaribas Forsts possess greater Beta diversity. The results suggest that local and historical factors possibly increase Beta diversity, contributing to the increase in resources used as food by primates. Therefore, the presence of primates of medium and large size in the Pacatuba Forest may affect the diversity of resources, contributing to the dispersion of large fruits and seeds. The presence of primates of medium and large size can thus contribute to the preservation of floristic diversity in forest fragments.

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FLORISTIC DIVERSITY OF SECONDARY FOREST IN THE EASTERN AMAZON, STATE OF AMAPÁ

FLORESTA ◽

10.5380/rf.v46i3.40161 ◽

2016 ◽

Vol 46 (3) ◽

pp. 343

Author(s):

José Renan da Silva Guimarães ◽

Marcelo De Jesus Veiga Carim ◽

Luciedi De Cássia Leôncio Tostes ◽

Salustiano Vilar da Costa Neto

Keyword(s):

Secondary Forest ◽

Diversity Index ◽

Agricultural Practices ◽

Floristic Composition ◽

Natural Disturbances ◽

Secondary Forests ◽

Floristic Diversity ◽

Composition And Structure ◽

Significant Difference ◽

Phytosociological Study

The increasing importance of secondary forests all over the world alerts us to the urgent need to understand the biophysical and social underlying factors that affect its regeneration after the abandonment of agricultural practices and natural disturbances. In the state of Amapá, studies related to the structure of secondary forests are still scarce. Therefore, this article aims to characterize the floristic composition and structure in two stretches of secondary forest in the eastern Amazon, state of Amapá. For the floristic and phytosociological study of tree species, 10 plots of 10 x 100 m (1.0 ha) were established: five plots in the community of São Francisco do Iratapuru and five plots in the community of Santo Antônio waterfall, totaling half a hectare (0,5 ha) in each area. In all plots, subjects with diameter at breast height (DBH) ≥ 5 cm were considered. In total, 1,183 subjects were sampled in the two stretches of forest. In stretch 01, 565 subjects belonging to 74 species, 55 genera and 33 families were recorded. In stretch 02, 618 subjects belonging to 26 species, 23 genera and 15 families were recorded. The Shannon diversity index (H'), estimated for stretch 1, was 3.52; and for stretch 2 (2.23). The two studied stretches, despite being registered at the same age, showed significant difference in the species richness, which is the major factor for diversity differences, resulting in low similarity between the studied forests.

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