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Floristic and diversity of tree species and shrub under a stand of Anadenanthera peregrina (L.) Speg.
Priscila Bezerra de Souza,Agostinho Lopes de Souza,Walter da Silva Costa,Ricardo Vieira Del Peloso
CERNE , 2012,
Abstract: The aim of this study was to analyze the floristic composition and structure of tree-shrub vegetation under a stand of Anadenanthera peregrina, in the municipality of Naque, Minas Gerais State, Brazil. The study was conducted in an area of approximately 10 ha within Anadenanthera peregrina population owned by Celulose Nipo – Brasileira SA (19°15’05’’S e 42°20’30’W). Ten random plots (20 x 50 m) were established to sample individuals with CBH (diameter at breast height) ≥ 15 cm (Class I). It was installed a subplot of 10 x 10 m in the center of each plot to sample individuals with total height ≥ t 1.30 m above the ground and CBH < 15 cm (Class II). Individuals in 20 x 50 m plots were classified according to their dispersal syndromes and successional guilds. In addition, it was performed the diameter distribution of samples. 510 individuals were found in Class I, belonging to 10 botanical families, 15 genera and 15 species; in Class II, 47 individuals from 10 families, 14 genera and 14 species, with the Sorensen similarity index equal to 48%. Classification of successional species sampled in classes I and II showed higher species richness in early secondary succession, with the group formed by pioneers and early secondary totaling 93.5% in Class I and 93% in Class II. Regarding dispersal syndromes, 60% of species in Class I are wind-dispersed. Diameter distribution by diameter class of Anadenanthera peregrina and other species were classified into reverse J-shaped distribution.
Florística e diversidade das espécies arbustivo-arbóreas regeneradas no sub-bosque de Anadenanthera peregrina (L.) Speg.
Souza, Priscila Bezerra de;Souza, Agostinho Lopes de;Costa, Walter da Silva;Peloso, Ricardo Vieira Del;Lana, Jacinto Moreira de;
CERNE , 2012, DOI: 10.1590/S0104-77602012000300008
Abstract: the aim of this study was to analyze the floristic composition and structure of tree-shrub vegetation under a stand of anadenanthera peregrina, in the municipality of naque, minas gerais state, brazil. the study was conducted in an area of approximately 10 ha within anadenanthera peregrina population owned by celulose nipo - brasileira sa (19o15'05"s e 42o20'30'w). ten random plots (20 x 50 m) were established to sample individuals with cbh (diameter at breast height) > 15 cm (class i). it was installed a subplot of 10 x 10 m in the center of each plot to sample individuals with total height > t 1.30 m above the ground and cbh < 15 cm (class ii). individuals in 20 x 50 m plots were classified according to their dispersal syndromes and successional guilds. in addition, it was performed the diameter distribution of samples. 510 individuals were found in class i, belonging to 10 botanical families, 15 genera and 15 species; in class ii, 47 individuals from 10 families, 14 genera and 14 species, with the sorensen similarity index equal to 48%. classification of successional species sampled in classes i and ii showed higher species richness in early secondary succession, with the group formed by pioneers and early secondary totaling 93.5% in class i and 93% in class ii. regarding dispersal syndromes, 60% of species in class i are wind-dispersed. diameter distribution by diameter class of anadenanthera peregrina and other species were classified into reverse j-shaped distribution.
Formas de intera？？o de três bairros periféricos com o Parque Municipal das Mangabeiras, Belo Horizonte, Minas Gerais
Porfírio, Thaís Helena da Costa;Barreto, Francisco Candido Cardoso;Souza, Agostinho Lopes de;Gon？alves, Wantuelfer;
Revista árvore , 2006, DOI: 10.1590/S0100-67622006000600019
Abstract: the present study had as objective to verify if the differences in socioeconomic pattern of the inhabitants of neighborhoods adjacent to the municipal park of mangabeiras - parma, would lead to differences in the interaction of inhabitants of each neighborhood with the area. the answers of 30 inhabitants of each one of the three neighborhoods bordering the mangabeiras park (parma), in belo horizonte, capital of the state of minas gerais were analyzed. half-open questionnaires were applied evaluating the interaction of the community with the park and its environment, and the conservation behavior. the general objective of the study was to provide information to the project of environmental education of the mangabeiras park, being the specific objective to verify if the socioeconomic differences influence in the interaction of the adjacent inhabitant with the park. the results showed that the three communities differed in relation to the participation in the programs and projects of the park, in relation to the disadvantages caused by the proximity to the park and in relation to the importance of its existence, which was corroborated by the statistical analyses. in relation to the other questions, despite the non-occurrence of significant differences, qualitative differences were observed in the answers given by the inhabitants.
ANáLISE DE VIABILIDADE DA PRODU？？O DE SEMENTE E POLPA DE JATOBá (Hymenaea spp) NA REGI？O SUL DE GOIáS
Agostinho Lopes de Souza,Camila Brás Costa,Débora Cristina Castellani,Eduardo Euclydes de Lima e Borges,Márcio Lopes da Silva
- , 2016, DOI: http://dx.doi.org/10.5902/1980509824231
Abstract: Abordou-se, neste trabalho, o manejo florestal sustentável de produtos florestais n？o madeireiros (PFNM) e avaliou a viabilidade técnica e econ？mica da produ？？o de frutos de jatobá no sul goiano. Em uma primeira etapa foram mapeadas e georreferenciadas 931 árvores do gênero Hymenaea, nos municípios de Campestre de Goiás - GO, Nazário - GO e Trindade - GO. Em uma segunda etapa, foram estimados os coeficientes técnicos de produ？？o e coletados dados, juntamente ao produtor, quanto aos custos na produ？？o de semente e farinha. O custo de produ？？o foi de R$ 54,06.kg-1 e o pre？o de venda, de R$ 67,58.kg-1. As análises de viabilidade econ？mica de plantios de jatobá e de implanta？？o de uma Agroindústria Rural de Pequeno Porte (ARPP) indicaram a partir dos critérios de avalia？？o econ？mica VPL, TIR, B/C e VAE, que há viabilidade na utiliza？？o dos frutos em ambos os cenários, desde que as práticas de manejo e estratégias de conserva？？o fomentem a produ？？o sustentável, provendo recursos econ？micos enquanto ocorre, simultaneamente, a conserva？？o dos recursos genéticos do jatobá
PERFIL DO FUSTE DE Anadenanthera peregrina DESCRITO PELO MéTODO DA ALTURA RELATIVA
Agostinho Lopes de Souza,Carlos Pedro Boechat Soares,Marco Ant？nio Amaro,Valdir Carlos Lima de Andrade,Walter da Silva Costa
- , 2016, DOI: http://dx.doi.org/10.5902/1980509824215
Abstract: Neste trabalho, o objetivo foi testar o Método da Altura Relativa na cubagem de árvores em pé de Anadenanthera peregrina. Testaram-se, ent？o, quatro diferentes maneiras de se empregar este método, comparando-os com um modelo de taper selecionado dentre vários outros disponíveis na literatura. Foram utilizados dados de 110 árvores-amostra cubadas em pé por meio do Pentaprisma de Weller. Para descrever o perfil do fuste de árvores de Anadenanthera peregrina, o Método da Altura Relativa apresentou expressiva superioridade quando se usaram todas as árvores e, quando se usaram partes destas, obteve-se o mesmo nível de acurácia que o uso de dados reais de cubagem no ajuste de modelos de taper
Estratifica？？o vertical em floresta ombrófila densa de terra firme n？o explorada, Amaz？nia Oriental
Souza, Deoclides Ricardo de;Souza, Agostinho Lopes de;
Revista árvore , 2004, DOI: 10.1590/S0100-67622004000500008
Abstract: this study was carried out at the forest management unit (fmu) in tracajás farm (02o35'53" s and 47o47'10"w), owned by nova era agroflorestal, in paragominas, pará, brazil. the objective was to accomplish the vertical stratification of an unexplored terra firme dense ombrophylous forest using cluster and discriminant analysis. the forest was stratified in homogeneous areas, denominated classes of volumetric stock i, ii and iii. in each class, five 100 x 100 m plots were randomly set up, where the total heights of the individual trees (dbh > 15.0 cm) were used for vertical forest stratification. the trees were organized in increasing order of total height and classified in 1 m amplitude classes, from the minimum to the maximum total height. a total height xmatrix was elaborated, with each variable xij representing the total height of the i-th tree classified into j-th class of total height. this x-matrix was the input for the cluster and discriminant analysis. the application of cluster analysis resulted into hierarchical and sequential clusters of height classes into total height strata (inferior, medium, and superior). discriminant analysis demonstrated a 100% correct classification. the vertical structure subdivision of forest into total height strata, by multivariate statistics proved the method efficient for uneven-aged forest vertical stratification.
Emprego do método BDq de sele？？o após a explora？？o florestal em Floresta Ombrófila Densa de Terra Firme, Amaz？nia oriental
Souza, Deoclides Ricardo de;Souza, Agostinho Lopes de;
Revista árvore , 2005, DOI: 10.1590/S0100-67622005000400014
Abstract: the objectives of this study were to analyze the diameter structure of a terra firme dense rain forest after selective logging, to apply the bdq method in the silvicultural treatment activities and to manage the forest aiming at a balanced diameter structure. the research was carried out at the forest management unit (fmu) in tracajás farm (02o35'53" s and 47o47'10"w), owned by nova era agroflorestal, in paragominas, pará, brazil. the forest was stratified into homogeneous areas, called classes of volume stock i, ii, and iii. in each of the stock classes, five plots of 100 x 100 m (1 ha) were randomly set up for measurement of the individuals with dbh > 15cm. in the center of each 100 x 100 m plot, a subplot of 10 x 100 m (0,1 ha) was established for measurement of the individuals with 5cm < dbh < 15 cm. the bdq selection method was used taking into account the remaining basal area (b), maximum diameter (d) and the de liocourt constant (q). in the stock class i, the proposed management method allowed the removal of 56.4 trees/ha, 3.33 m2/ha and 67.64 m3/ha, with a 13.1% reduction of the basal area. in the stock class ii, 53.7 trees/ha, 3.88 m2/ha and 65.96 m3/ha were removed, with a 16.2 % reduction of the basal area. in the stock class iii, 63.3 trees/ha, 3.13 m2/ha and 46.76 m3/ha were removed, with a 14.0% reduction of the basal area. few trees or a deficit was observed in the higher diameter classes due to the selective logging. the periodical removal of trees should occur in the lower diameter classes, aiming at a balanced diameter distribution and the conduction of the forest to a balanced structure during the cutting cycle, leading to a continuous use of the forest woody products.
Análise multivariada para estratifica？？o volumétrica de uma floresta ombrófila densa de terra firme, Amaz？nia Oriental
Souza, Agostinho Lopes de;Souza, Deoclides Ricardo de;
Revista árvore , 2006, DOI: 10.1590/S0100-67622006000100007
Abstract: the objective of this study was to propose a method for stratification of an unexplored terra firme dense ombrophylous forest into classes of volumetric stocks, by using the techniques of cluster and discriminant analysis. the research was carried out at the forest management unit (fmu) in tracajás farm (02o 35'53" s and 47o 47'10"w), owned by nova era agroflorestal, in paragominas, pará, brazil. an census (100%) was accomplished in which the volumes of commercial whole-tree with dbh > 45 cm were estimated for 55 commercial species in 49 stands 10 ha each. the estimated volumes of individual commercial whole-trees were organized in a increasing order. a x-matrix was built, in which each variable xij represented the i-th volume classified in the j-th stand. this x-matrix was the input for the cluster and discriminant analysis. the application of the cluster analysis resulted in hierarchical clusters of the stands in stock classes. the analysis of the dendrogram allowed the stratification of the forest in three homogeneous and distinct groups, denominated classes of volumetric stock i, ii and iii. the discriminant analysis pointed out that 100% of the stands were correctly classified. the multivariate classification of the forest into homogeneous classes of volumetric stocks showed to be an efficient method for stratification of uneven-aged forests, which can be constituted by extracts, compartments, site classes and annual production units.
Análise multivariada para estratifica o volumétrica de uma floresta ombrófila densa de terra firme, Amaz nia Oriental
Souza Agostinho Lopes de,Souza Deoclides Ricardo de
Revista árvore , 2006,
Abstract: O objetivo deste estudo foi propor um método de estratifica o em classes homogêneas de estoque volumétrico da floresta ombrófila densa de terra firme n o explorada, empregando-se as técnicas de análises de agrupamento e discriminante. A pesquisa foi conduzida na Unidade de Manejo Florestal (UMF) da Fazenda Tracajás (02o35'53"S e 47o47'10"W), pertencente à empresa Nova Era Agroflorestal, de propriedade do Grupo Rosa Madeireira, Município de Paragominas, Estado do Pará. Foi realizado um censo (100%), no qual se estimaram os volumes do fuste comercial das árvores com dap > 45 cm de 55 espécies comerciais em 49 talh es de explora o com 10 ha cada um. Reuniram-se os volumes estimados do fuste comercial das árvores individuais por talh o em ordem crescente. Elaborou-se uma matriz X de dados desses volumes, em que cada variável x ij representou o i-ésimo volume classificado no j-ésimo talh o. A matriz X foi utilizada como input nas análises de agrupamento e discriminante. A aplica o da análise de agrupamento, método de Ward, resultou em agrupamentos hierárquicos dos talh es em classes de estoques. A análise do dendrograma permitiu estratificar o povoamento em três grupos homogêneos e distintos, denominados classes I, II e III de estoques volumétricos. A análise discriminante, método de Fisher, indicou que 100% dos talh es foram corretamente classificados. A classifica o multivariada da floresta em classes de estoques volumétricos mostrou-se um método eficiente na estratifica o de áreas homogêneas de florestas ineqüianeas, as quais podem se constituir em estratos, compartimentos, classes de sítio e unidades de produ o anual.
Altera？？o florística de áreas de florestas exploradas convencionalmente em planos de manejo, nos domínios de floresta atlantica, Minas Gerais-Brasil
Coelho, Danilo José da Silva;Souza, Agostinho Lopes de;
Revista árvore , 2007, DOI: 10.1590/S0100-67622007000200007
Abstract: the objective of the present study was to analyze the changes in the composition of species, in forest management areas having as control the legal reserve area, and it was carried out in fragments of semideciduous seasonal forests in the zona da mata region of minas gerais state. following the harvest of each fmp, the comparison between forest management areas and legal reserve areas showed that, in relation to changes in diversity of the fmp tree species, the verifiers ecological group, use group and rare species group indicated that the forest management areas of all the fmps were statistically equal (p>0.05) to the legal reserve areas. the verifier species richness indicated that the forest management areas and the legal reserve areas of the fmp28 and fmp29 were statistically equal (p>0.05), whereas the fmp30 and fmp16 were statistically different (p<0.05). the verifier species diversity indicated that the forest management areas were statistically different (p>0.05) from the legal reserve areas in fmp29, fmp30 and fmp16 and statistically equal (p<0.05) in the fmp28. the greatest similarity of species occurred between the groups formed by the fmp29amf and fmp29arl, and the smallest similarity occurred between the groups formed by fmp29arl, fmp29amf, fmp28arl, and fmp16arl, fmp16amf, fmp30arl, fmp30amf, fmp28amf.
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