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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
31/08/2020 |
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Data da última atualização: |
28/06/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENDONÇA, B. A. F. de; SCHAEFER, C. E. G. R.; FERNANDES-FILHO, E. I.; SIMAS, F. N. B.; AMARAL, E. F. do. |
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Afiliação: |
Bruno Araujo Furtado de Mendonça, Universidade Federal Rural do Rio de Janeiro; Carlos Ernesto Gonçalves Reynaud Schaefer, Universidade Federal de Viçosa; Elpídio Inácio Fernandes-Filho, Universidade Federal de Viçosa; Felipe Nogueira Bello Simas, Universidade Federal de Viçosa; EUFRAN FERREIRA DO AMARAL, CPAF-AC. |
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Título: |
Genesis and micropedology of soils at Serra do Divisor and Moa river floodplain, northwestern Acre, Brazilian Amazonia. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 44, e0200038, 2020. |
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ISSN: |
0100-0683 (print) / 1806-9657 (online) |
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DOI: |
10.36783/18069657rbcs20200038 |
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Idioma: |
Inglês |
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Conteúdo: |
The northwestern part of the Acre State (Brazil) possesses singular soils in Brazilian Amazonia, but have been very little studied. This study aimed to discuss the genesis and some micropedological aspects of the soils from Serra do Divisor and adjacent floodplain soils of the Moa river, to enhance the knowledge on their formation. A toposequence of soils ranging from the uppermost part of sub-Andean Serra do Divisor to the Alluvial soils of Moa river floodplain was studied, regarding chemical, physical, mineralogical, and micromorphological attributes. The parent material of the Serra do Divisor is basically quartzose sandstone, and the soils along the toposequence were classified as Typic Haplorthods (P1), Spodic Quartzipsamment (P2), Lithic Quartzipsamment (P3), and Lithic Quartzipsamment (P4). Along the Moa river floodplain, we also identified and collected, Typic Udifluvent (P5), Typic Kandiudult (P6), Typic Kandiudalf (P7), and Arenic Plinthic Kandiudult (P8). The Serra do Divisor soils have very low fertility, high acidity, and low cation exchange capacities, presenting a coarse sandy texture, even shallow pedons. The X-ray diffraction analysis of these soils indicates the predominance of kaolinite, with traces of quartz and gibbsite. The shallow mountain Podzols on sandstone have an expressive accumulation of organic material in surface horizons, with evidence of ferrihydrite and imogolite in the subsurface. At the Moa river floodplain, all soils are originated from recent sediments (Cenozoic), which have a geological source upstream. Varying sedimentary layers are key aspects influencing soil genesis. Those soils have evidence of 2:1 clays with hydroxyl-Al interlayers in subsurface horizons. The Serra do Divisor steep landforms and the coarse texture of the soils promote good drainage and favor leaching and chemical impoverishment. Kaolinite and gibbsite were formed by severe leaching and there are evidences of in situ neoformation of gibbsite by extreme Si losses. All studied soils have some peculiarities such as high accumulation of organic material or 2:1 clay minerals. Most investigated soils were affected by colluvial, reworking, mass movements or a strong variation on sedimentation. MenosThe northwestern part of the Acre State (Brazil) possesses singular soils in Brazilian Amazonia, but have been very little studied. This study aimed to discuss the genesis and some micropedological aspects of the soils from Serra do Divisor and adjacent floodplain soils of the Moa river, to enhance the knowledge on their formation. A toposequence of soils ranging from the uppermost part of sub-Andean Serra do Divisor to the Alluvial soils of Moa river floodplain was studied, regarding chemical, physical, mineralogical, and micromorphological attributes. The parent material of the Serra do Divisor is basically quartzose sandstone, and the soils along the toposequence were classified as Typic Haplorthods (P1), Spodic Quartzipsamment (P2), Lithic Quartzipsamment (P3), and Lithic Quartzipsamment (P4). Along the Moa river floodplain, we also identified and collected, Typic Udifluvent (P5), Typic Kandiudult (P6), Typic Kandiudalf (P7), and Arenic Plinthic Kandiudult (P8). The Serra do Divisor soils have very low fertility, high acidity, and low cation exchange capacities, presenting a coarse sandy texture, even shallow pedons. The X-ray diffraction analysis of these soils indicates the predominance of kaolinite, with traces of quartz and gibbsite. The shallow mountain Podzols on sandstone have an expressive accumulation of organic material in surface horizons, with evidence of ferrihydrite and imogolite in the subsurface. At the Moa river floodplain, all soils are originated from ... Mostrar Tudo |
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Palavras-Chave: |
Amazonia Occidental; Amazônia Ocidental; Formación del suelo; Llanuras sujetas a inundaciones; Materia orgánica del suelo; Micropedologia; Micropedology; Mineralogía del suelo; Northwestern Acre; Planície de inundação; Rio Moa (AC); Serra do Divisor (AC); Western Amazon. |
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Thesagro: |
Gênese do Solo; Matéria Orgânica; Mineralogia; Várzea. |
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Thesaurus Nal: |
Floodplains; Soil formation; Soil mineralogy; Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/215667/1/27023.pdf
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Marc: |
LEADER 03641naa a2200445 a 4500
001 2124663
005 2021-06-28
008 2020 bl uuuu u00u1 u #d
022 $a0100-0683 (print) / 1806-9657 (online)
024 7 $a10.36783/18069657rbcs20200038$2DOI
100 1 $aMENDONÇA, B. A. F. de
245 $aGenesis and micropedology of soils at Serra do Divisor and Moa river floodplain, northwestern Acre, Brazilian Amazonia.$h[electronic resource]
260 $c2020
520 $aThe northwestern part of the Acre State (Brazil) possesses singular soils in Brazilian Amazonia, but have been very little studied. This study aimed to discuss the genesis and some micropedological aspects of the soils from Serra do Divisor and adjacent floodplain soils of the Moa river, to enhance the knowledge on their formation. A toposequence of soils ranging from the uppermost part of sub-Andean Serra do Divisor to the Alluvial soils of Moa river floodplain was studied, regarding chemical, physical, mineralogical, and micromorphological attributes. The parent material of the Serra do Divisor is basically quartzose sandstone, and the soils along the toposequence were classified as Typic Haplorthods (P1), Spodic Quartzipsamment (P2), Lithic Quartzipsamment (P3), and Lithic Quartzipsamment (P4). Along the Moa river floodplain, we also identified and collected, Typic Udifluvent (P5), Typic Kandiudult (P6), Typic Kandiudalf (P7), and Arenic Plinthic Kandiudult (P8). The Serra do Divisor soils have very low fertility, high acidity, and low cation exchange capacities, presenting a coarse sandy texture, even shallow pedons. The X-ray diffraction analysis of these soils indicates the predominance of kaolinite, with traces of quartz and gibbsite. The shallow mountain Podzols on sandstone have an expressive accumulation of organic material in surface horizons, with evidence of ferrihydrite and imogolite in the subsurface. At the Moa river floodplain, all soils are originated from recent sediments (Cenozoic), which have a geological source upstream. Varying sedimentary layers are key aspects influencing soil genesis. Those soils have evidence of 2:1 clays with hydroxyl-Al interlayers in subsurface horizons. The Serra do Divisor steep landforms and the coarse texture of the soils promote good drainage and favor leaching and chemical impoverishment. Kaolinite and gibbsite were formed by severe leaching and there are evidences of in situ neoformation of gibbsite by extreme Si losses. All studied soils have some peculiarities such as high accumulation of organic material or 2:1 clay minerals. Most investigated soils were affected by colluvial, reworking, mass movements or a strong variation on sedimentation.
650 $aFloodplains
650 $aSoil formation
650 $aSoil mineralogy
650 $aSoil organic matter
650 $aGênese do Solo
650 $aMatéria Orgânica
650 $aMineralogia
650 $aVárzea
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aFormación del suelo
653 $aLlanuras sujetas a inundaciones
653 $aMateria orgánica del suelo
653 $aMicropedologia
653 $aMicropedology
653 $aMineralogía del suelo
653 $aNorthwestern Acre
653 $aPlanície de inundação
653 $aRio Moa (AC)
653 $aSerra do Divisor (AC)
653 $aWestern Amazon
700 1 $aSCHAEFER, C. E. G. R.
700 1 $aFERNANDES-FILHO, E. I.
700 1 $aSIMAS, F. N. B.
700 1 $aAMARAL, E. F. do
773 $tRevista Brasileira de Ciência do Solo$gv. 44, e0200038, 2020.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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Origem |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
15/02/2006 |
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Data da última atualização: |
09/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Nacional - B |
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Autoria: |
KALIL FILHO, A. N.; HIRANO, E.; STURION, J. A.; SOUSA, V. A. de; MARZOLLO, L. G.; NICOLOTTI, F.; UKAN, D. |
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Título: |
Componentes de variância e seleção de genitores a partir de progênies de imbuia - Ocotea porosa Ness et Martius ex. Ness, Lauraceae. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Boletim de Pesquisa Florestal, Colombo, n. 49, p. 121-124, jul./dez. 2004. |
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Idioma: |
Português |
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Notas: |
Nota técnica. |
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Conteúdo: |
A exploração da imbuia ( Ocotea porosa ) ocorreu concomitantemente à da Araucaria angustifolia . Por ser espécie ameaçada de extinção e possuidora de madeira de alto valor econômico, a Embrapa Florestas instalou um banco de germoplasma ex-situ . Nesse experimento, mediu-se a altura de mudas de 31 progênies com doze meses de idade dispostas em delineamento inteiramente casualizado. A média geral da altura foi de 16,55 cm. A estimativa da variância genética aditiva média foi alta (72,03) em comparação com a média. A estimativa da herdabilidade em nível de média de progênies foi de 0,83 e a acurácia seletiva foi de 0,91. A seleção dos genitores apresentou ganho genético 48,9%, enquanto a média esperada estimada na próxima geração, após a seleção dos doze melhores genitores, deverá ser de 24,65 cm. |
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Palavras-Chave: |
Ganho genético; Genetic gain; Genetic parameter; Selection. |
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Thesagro: |
Germoplasma; Imbuia; Ocotea Porosa; Parâmetro Genético; Seleção. |
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Thesaurus NAL: |
breeding. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPF-2009-09/39097/1/Pag_121_124.pdf
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Marc: |
LEADER 01773naa a2200325 a 4500
001 1311932
005 2015-02-09
008 2004 bl uuuu u00u1 u #d
100 1 $aKALIL FILHO, A. N.
245 $aComponentes de variância e seleção de genitores a partir de progênies de imbuia - Ocotea porosa Ness et Martius ex. Ness, Lauraceae.
260 $c2004
500 $aNota técnica.
520 $aA exploração da imbuia ( Ocotea porosa ) ocorreu concomitantemente à da Araucaria angustifolia . Por ser espécie ameaçada de extinção e possuidora de madeira de alto valor econômico, a Embrapa Florestas instalou um banco de germoplasma ex-situ . Nesse experimento, mediu-se a altura de mudas de 31 progênies com doze meses de idade dispostas em delineamento inteiramente casualizado. A média geral da altura foi de 16,55 cm. A estimativa da variância genética aditiva média foi alta (72,03) em comparação com a média. A estimativa da herdabilidade em nível de média de progênies foi de 0,83 e a acurácia seletiva foi de 0,91. A seleção dos genitores apresentou ganho genético 48,9%, enquanto a média esperada estimada na próxima geração, após a seleção dos doze melhores genitores, deverá ser de 24,65 cm.
650 $abreeding
650 $aGermoplasma
650 $aImbuia
650 $aOcotea Porosa
650 $aParâmetro Genético
650 $aSeleção
653 $aGanho genético
653 $aGenetic gain
653 $aGenetic parameter
653 $aSelection
700 1 $aHIRANO, E.
700 1 $aSTURION, J. A.
700 1 $aSOUSA, V. A. de
700 1 $aMARZOLLO, L. G.
700 1 $aNICOLOTTI, F.
700 1 $aUKAN, D.
773 $tBoletim de Pesquisa Florestal, Colombo$gn. 49, p. 121-124, jul./dez. 2004.
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Registro original: |
Embrapa Florestas (CNPF) |
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