Dinâmica de populações de espécies lenhosas de Cerrado, Balsas, Maranhão

Aquino, F. de G.; Walter, Bruno Machado Teles; Ribeiro, J. F.

doi:10.1590/s0100-67622007000500003

Cited by 18 publications

(18 citation statements)

References 16 publications

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“…The "charcoal tree" (S. paniculatum) is widely used as firewood and for civil construction in the rural areas (Oliveira et al 2008). In an area of cerrado in the state of Maranhão, the "charcoal tree" showed the highest recruitment rate and annual diameter growth among 12 native species (Aquino et al 2007), which may explain the high abundance of the species in the protected area. However, it also presented the second highest mortality rate (Aquino et al 2007), which may also explain the high use of S. paniculatum for firewood in the Itaúna Settlement Project.…”

Section: Ecological Apparency and Uvmentioning

confidence: 95%

Availability and use of woody plants in a agrarian reform settlement in the cerrado of the state of Goiás, Brazil

2013

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Protected areas are important sources providing plant resources for human populations, and contributing to the livelihood and income of families. To test the ecological apparency hypothesis, that there is positive relationship between the visibility of a species and its use, we conducted an ethnobotanical survey in the protected area of the Itaúna rural settlement in the municipality of Planaltina, in the state of Goiás, in central Brazil. The phytosociological parameters were obtained in 5.6 ha area of the Brazilian cerrado (savanna), and the ethnobotanical survey conducted with semi-structured interviews with 75 people. There was a weak positive correlation between the use value and the phytosociological parameters. A principal component analysis showed that seven species (Pterodon pubescens, Hancornia speciosa, Hymenaea stigonocarpa, Eugenia dysenterica, Annona crassiflora, Stryphnodendron adstringens and Solanum lycocarpum) have high use value, despite having low density, dominance and frequency. Nineteen species showed a positive relationship between their use value and their phytosociological parameters. The relationship between vegetation structure and use value differed among species in the protected area, indicating that more attention should be paid to those under more pressure, with low abundance. Further studies of these seven species should be conducted to determine whether human pressure is affecting populations structures and to define management strategies.Key words: cerrado, ecological apparency, use value, ethnobotany, phytosociology Acta Botanica Brasilica 27(3): 604-612. 2013. Availability and use of woody plants in a agrarian reform settlement in the cerrado of the state of Goiás, Brazil

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Section: Ecological Apparency and Uvmentioning

confidence: 95%

Availability and use of woody plants in a agrarian reform settlement in the cerrado of the state of Goiás, Brazil

2013

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“…Assim, ressalta-se a necessidade de pesquisas em dinâmica vegetacional (Arce et al 2000, Aquino et al 2007a, pois tais estudos podem subsidiar iniciativas de conservação (Schiavini et al 1998, Aquino et al 2007b, manejo e recuperação de áreas degradadas (Aquino et al 2007a), além de permitir a avaliação das causas e consequências das mudanças ocorridas em função do tempo na estrutura das populações, permitindo ampliar o conhecimento disponível sobre as espécies e maximizar o sucesso destas quando utilizadas na restauração de áreas degradadas (Schiavini et al 1998). A partir das informações fornecidas pelos estudos de dinâmica pode-se realizar avaliação detalhada dos padrões espaciais de mortalidade, recrutamento, crescimento e regeneração, que embasarão o entendimento dos processos ecológicos da comunidade (Arce et al 2000, Corrêa & Van Den Berg 2002, Henriques & Hay 2002, Aquino et al 2007b.…”

Section: Introductionunclassified

Dinâmica da comunidade lenhosa de um Cerrado Típico na região Nordeste do Estado de Mato Grosso, Brasil

et al. 2011

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Abstract:The objective of the study was to investigate changes in the woody plant community in a four-year period. It was established 50 permanent plots of 10 × 10 m and all individuals with diameter above ground 30 cm (DAG 30 cm ) ≥ 5 cm were sampled in 2002 and 2006. In the inventory of January 2002, were found 945 individuals belonging to 77 species, 65 genera and 35 families and in January 2006, were 1,106 individuals, 80 species, 66 genera and 36 families. Community species diversity and diameter structure did not change within the period. Mortality rates (4.01% year , respectively), indicating the growth potential of such species as important for recovery strategies on degraded areas. The absence of fire during the study period may have been the main factor behind the dynamics of the vegetation of the studied cerrado, favoring the establishment of some woody species and providing increase in density and biomass. Keywords: savanna, structural changes, temporary alterations, mortality, recruitment. , respectivamente), indicando o potencial de crescimento de tais espécies como importante para estratégias de recuperação de áreas degradadas. A ausência de fogo no período estudado pode ter sido o fator responsável pela dinâmica da vegetação do cerrado estudado, favorecendo o estabelecimento de algumas espécies lenhosas e proporcionando aumento em densidade e biomassa. Palavras-chave: savana, mudanças estruturais, alterações temporais, mortalidade, recrutamento. MEWS

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“…A partir desses estudos é possível realizar uma avaliação detalhada dos padrões espaciais de mortalidade, recrutamento e crescimento, que permitem embasar o entendimento dos processos ecológicos que regem as comunidades (Arce et al 2000;Corrêa & van den Berg 2002), as estratégias de vida adotadas pelas populações vegetais (Schiavini et al 2001) e a detecção de oscilações populacionais e alterações na comunidade decorrentes de perturbações ou de transformações sucessionais (Durigan 2006). Dessa maneira, estudos de dinâmica são úteis para subsidiar iniciativas de conservação, manejo e restauração de áreas degradadas, proporcionando a ampliação do conhecimento disponível sobre as espécies e maximizando o sucesso das mesmas quando utilizadas na restauração de áreas fl orestais perturbadas (Rolim et al 1999;Schiavini et al 2001;Lopes & Schiavini 2007;Aquino et al 2007).…”

Section: Introductionunclassified

Dinâmica estrutural da comunidade lenhosa em Floresta Estacional Semidecidual na transição Cerrado-Floresta Amazônica, Mato Grosso, Brasil

et al. 2011

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ABSTRACT(Structural dynamics of the woody community in a semideciduous forest in the Cerrado-Amazon Forest transition of Mato Grosso, Brazil). Understanding ecological processes, especially the structural and floristic changes in natural ecosystems, is essential before conserving and/or restoring these areas. The aim of this study was to assess the changes that occurred in the woody plant community from 2003 to 2008. Sixty permanent plots of 10 x 10 m were established, in which all individuals with diameter at breast height ≥ 5 cm were sampled. A total of 1,140 ind. ha -1 were recorded in 2003 (basal area 24.35 m 2 ha -1 ) and 1,071 ind. ha -1 in 2008 (basal area of 22.04 m 2 ha -1 ). The recruitment (2.76% year -1 ) did not compensate mortality (3.95% year -1 ) and the basal area gain (0.54% year -1 ) did not exceed the loss (3.77% year -1 ). Because of this unbalance, the half-life (17.3 years) was lower than the doubling time (29.9 years), resulting in low stability (12.6 yrs) and replacement (23.6 yrs) in relation to other seasonal forests. The parameters of community and species dynamics suggest that the forest is undergoing changes characterized mainly by the density and biomass reduction of trees, which may be related to an increase in lianas, an early rebuilding phase of the forest silvigenetic cycle or even the severe drought that occurred in the region in 2005.

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Dinâmica de populações de espécies lenhosas de Cerrado, Balsas, Maranhão

Cited by 18 publications

References 16 publications

Availability and use of woody plants in a agrarian reform settlement in the cerrado of the state of Goiás, Brazil

Availability and use of woody plants in a agrarian reform settlement in the cerrado of the state of Goiás, Brazil

Dinâmica da comunidade lenhosa de um Cerrado Típico na região Nordeste do Estado de Mato Grosso, Brasil

Dinâmica estrutural da comunidade lenhosa em Floresta Estacional Semidecidual na transição Cerrado-Floresta Amazônica, Mato Grosso, Brasil

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