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Registro Completo |
Biblioteca(s): |
Embrapa Amapá. |
Data corrente: |
24/01/2020 |
Data da última atualização: |
27/01/2020 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
DANTAS, A. R.; PIEDADE, M. T. F.; GUEDES, M. C.; LIRA-GUEDES, A. C. |
Afiliação: |
ADELSON ROCHA DANTAS, PPG EM ECOLOGIA, INPA; MARIA TERESA FERNANDEZ PIEDADE, INPA; MARCELINO CARNEIRO GUEDES, CPAF-AP; ANA CLAUDIA LIRA GUEDES, CPAF-AP. |
Título: |
Population structure of Pentaclethra macroloba (Willd.) Kuntze in high and low floodplains of the Amazonian estuary. |
Ano de publicação: |
2019 |
Fonte/Imprenta: |
Pesquisa Florestal Brasileira, v. 39, e201902043, p. 328, 2019. Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba. |
Idioma: |
Inglês |
Conteúdo: |
The flood cycle of floodplain forests and topographic variations are important factors of diversification and morphological and ecophysiological adaptations of the plant community. Pentaclethra macroloba is a hyperdominant species adapted to flood variations. The objective of this study was to characterize the P. macroloba population structure between environments with high topography, flooded only during the rainy season and peak flood of the river, (high várzea-HV) and low topography with daily flood (low várzea-LV). The study was carried in the Mazagão Experimental Field, Brazil. Four plots of 1 ha were installed in each environment. All individuals with DBH ≥ 5 cm were measured and georeferenced. ANOVA test, 0.05% probability, was applied to verify the structural differences between two environments. The HV had higher population density (51.2 individuals.ha-1) compared to the LV (36.7 individuals.ha-1), although without significance. Basal area was higher in the HV (10.42 m²) in comparison with LV (5.90 m²), with significant difference (F = 7.13, p = 0.00795). The maximum DAP of HV was 67 cm with mean of 24 cm. The LV presented maximum DBH of 42 cm with mean of 21 cm, showing structural difference between the two environments (F = 6.22, p = 0.0131). The aggregation index showed high aggregation in the LV (R = 0.89) than in the HV (R = 0.79), differing significantly between the two environments (F = 11.31, p = 0.0008). Frequency and time of flooding are ecological drives that structure the population of pracaxizeiro causing morphological and ecophysiological adaptations to the individual. MenosThe flood cycle of floodplain forests and topographic variations are important factors of diversification and morphological and ecophysiological adaptations of the plant community. Pentaclethra macroloba is a hyperdominant species adapted to flood variations. The objective of this study was to characterize the P. macroloba population structure between environments with high topography, flooded only during the rainy season and peak flood of the river, (high várzea-HV) and low topography with daily flood (low várzea-LV). The study was carried in the Mazagão Experimental Field, Brazil. Four plots of 1 ha were installed in each environment. All individuals with DBH ≥ 5 cm were measured and georeferenced. ANOVA test, 0.05% probability, was applied to verify the structural differences between two environments. The HV had higher population density (51.2 individuals.ha-1) compared to the LV (36.7 individuals.ha-1), although without significance. Basal area was higher in the HV (10.42 m²) in comparison with LV (5.90 m²), with significant difference (F = 7.13, p = 0.00795). The maximum DAP of HV was 67 cm with mean of 24 cm. The LV presented maximum DBH of 42 cm with mean of 21 cm, showing structural difference between the two environments (F = 6.22, p = 0.0131). The aggregation index showed high aggregation in the LV (R = 0.89) than in the HV (R = 0.79), differing significantly between the two environments (F = 11.31, p = 0.0008). Frequency and time of flooding are ecological d... Mostrar Tudo |
Thesagro: |
Dinâmica Populacional; Pracaxi. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/209566/1/CPAF-AP-2019-Population-structure-Pentaclethra-macroloba.pdf
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Marc: |
LEADER 02278nam a2200169 a 4500 001 2119312 005 2020-01-27 008 2019 bl uuuu u00u1 u #d 100 1 $aDANTAS, A. R. 245 $aPopulation structure of Pentaclethra macroloba (Willd.) Kuntze in high and low floodplains of the Amazonian estuary.$h[electronic resource] 260 $aPesquisa Florestal Brasileira, v. 39, e201902043, p. 328, 2019. Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.$c2019 520 $aThe flood cycle of floodplain forests and topographic variations are important factors of diversification and morphological and ecophysiological adaptations of the plant community. Pentaclethra macroloba is a hyperdominant species adapted to flood variations. The objective of this study was to characterize the P. macroloba population structure between environments with high topography, flooded only during the rainy season and peak flood of the river, (high várzea-HV) and low topography with daily flood (low várzea-LV). The study was carried in the Mazagão Experimental Field, Brazil. Four plots of 1 ha were installed in each environment. All individuals with DBH ≥ 5 cm were measured and georeferenced. ANOVA test, 0.05% probability, was applied to verify the structural differences between two environments. The HV had higher population density (51.2 individuals.ha-1) compared to the LV (36.7 individuals.ha-1), although without significance. Basal area was higher in the HV (10.42 m²) in comparison with LV (5.90 m²), with significant difference (F = 7.13, p = 0.00795). The maximum DAP of HV was 67 cm with mean of 24 cm. The LV presented maximum DBH of 42 cm with mean of 21 cm, showing structural difference between the two environments (F = 6.22, p = 0.0131). The aggregation index showed high aggregation in the LV (R = 0.89) than in the HV (R = 0.79), differing significantly between the two environments (F = 11.31, p = 0.0008). Frequency and time of flooding are ecological drives that structure the population of pracaxizeiro causing morphological and ecophysiological adaptations to the individual. 650 $aDinâmica Populacional 650 $aPracaxi 700 1 $aPIEDADE, M. T. F. 700 1 $aGUEDES, M. C. 700 1 $aLIRA-GUEDES, A. C.
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Embrapa Amapá (CPAF-AP) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
22/09/1995 |
Data da última atualização: |
21/02/2007 |
Autoria: |
HOMECHIN, M. |
Título: |
Efeito do espacamento e densidade de plantas na incidencia da podridao branca da haste causada pelo fungo Sclerotinia sclerotiorum em plantas de soja. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
In: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de soja 1980/81. Londrina, 1981. |
Páginas: |
p. 341-343. |
Idioma: |
Português |
Palavras-Chave: |
Brasil; Densidade; Disease; Fungus; Parana; Soybean; Spacing. |
Thesagro: |
Doença; Espaçamento; Fungo; População; Sclerotinia Sclerotiorum; Soja. |
Thesaurus NAL: |
Brazil; density; population. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00910naa a2200313 a 4500 001 1453154 005 2007-02-21 008 1981 bl uuuu u00u1 u #d 100 1 $aHOMECHIN, M. 245 $aEfeito do espacamento e densidade de plantas na incidencia da podridao branca da haste causada pelo fungo Sclerotinia sclerotiorum em plantas de soja. 260 $c1981 300 $ap. 341-343. 650 $aBrazil 650 $adensity 650 $apopulation 650 $aDoença 650 $aEspaçamento 650 $aFungo 650 $aPopulação 650 $aSclerotinia Sclerotiorum 650 $aSoja 653 $aBrasil 653 $aDensidade 653 $aDisease 653 $aFungus 653 $aParana 653 $aSoybean 653 $aSpacing 773 $tIn: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de soja 1980/81. Londrina, 1981.
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