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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Milho e Sorgo. |
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Data corrente: |
17/11/2011 |
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Data da última atualização: |
05/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, G. L.; LIMA, H. V.; CAMPANHA, M. M.; GILKES, R. J.; OLIVEIRA, T. S. |
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Afiliação: |
Universidade Federal do Ceará (UFC) - Fortaleza, CE.; Universidade Federal Rural do Amazonas, Belém, PA.; MONICA MATOSO CAMPANHA, CNPMS; School of Earth and Environment, The University of Western Australia, Australia; UFC, Fortaleza, CE. |
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Título: |
Soil physical quality of Luvisols under agroforestry, natural vegetation and conventional crop management systems in the Brazilian semi-arid region. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Geoderma, Amsterdam, v. 167/168, p. 61-70, Nov. 2011. |
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DOI: |
10.1016/j.geoderma.2011.09.009 |
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Idioma: |
Inglês |
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Conteúdo: |
The imposition of agricultural systems changes the natural equilibrium of the soil to an extent that it becomes dependant on management practices and soil resilience. Agroforestry systems (AFs) mimic characteristics of natural ecosystems such as multistrata canopy and deep rooting and may minimize the consequences of these changes by providing soil protection and maintenance of conditions similar to those under natural vegetation. This study evaluates the physical properties of a Luvisol at a site where since 1997 alternative agroforestry systems (AFs) (agrosilvipasture?AGP and silvipasture?SILV), conventional crop management (CCM) and natural vegetation (NV) have been maintained. Undisturbed soil cores were collected in 2005 and submitted to a range of matric suction for which soil bulk density (BD), soil penetration resistance (Q) and soil water content (?) were determined. Water retention and penetration resistance were used to determine the least limiting water range (LLWR) and the slope of the soil water retention curve at its inflection point (S-value). Particle size, total organic carbon (TOC) and particle density were determined using the disturbed soil samples. Water retention and porosity followed the sequence NVNSILVNCCMNAGP. The AFs studied (AGP and SILV) improved or maintained soil physical quality when compared to NV with no significant differences between the S-values of 0.044, 0.042 and 0.050, respectively. However, the S-value of 0.035 for CCM indicates that this management was unable to maintain soil physical quality on the same levels as AFs and NV. The decrease of LLWR with BD occurred for all treatments, and the BD at a maximum effect (LLWR=0) which is called the critical BD (BDc), was, respectively, 1.69, 1.62, 1.56 and 1.56 Mg m?3 for AGP, SILV, NV and CCM. The larger values of LLWR for AFs (AGP and SILV) are similar to the value for NV, with associated superior aeration, matric suction and reduced resistance to penetration by roots. Indices such as LLWR and S-value were suitably sensitive and could be used in future research, but it is important to identify other potential indices for these situations that can show how quickly changes in soil quality may occur. MenosThe imposition of agricultural systems changes the natural equilibrium of the soil to an extent that it becomes dependant on management practices and soil resilience. Agroforestry systems (AFs) mimic characteristics of natural ecosystems such as multistrata canopy and deep rooting and may minimize the consequences of these changes by providing soil protection and maintenance of conditions similar to those under natural vegetation. This study evaluates the physical properties of a Luvisol at a site where since 1997 alternative agroforestry systems (AFs) (agrosilvipasture?AGP and silvipasture?SILV), conventional crop management (CCM) and natural vegetation (NV) have been maintained. Undisturbed soil cores were collected in 2005 and submitted to a range of matric suction for which soil bulk density (BD), soil penetration resistance (Q) and soil water content (?) were determined. Water retention and penetration resistance were used to determine the least limiting water range (LLWR) and the slope of the soil water retention curve at its inflection point (S-value). Particle size, total organic carbon (TOC) and particle density were determined using the disturbed soil samples. Water retention and porosity followed the sequence NVNSILVNCCMNAGP. The AFs studied (AGP and SILV) improved or maintained soil physical quality when compared to NV with no significant differences between the S-values of 0.044, 0.042 and 0.050, respectively. However, the S-value of 0.035 for CCM indicates that... Mostrar Tudo |
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Palavras-Chave: |
Agroecologia; Agrofloresta; Agroforestry systems; Código florestal; Higroscopicidade; Least limiting water range; Resistência à penetração; S-value; Sistemas agroflorestais. |
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Thesagro: |
Caatinga; Estrutura do solo; Manejo do solo; Retenção de água no solo; Solo. |
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Thesaurus Nal: |
Agroecology; Brazil; Hygroscopicity; Semiarid soils; Soil management; Soil penetration resistance; Soil structure. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03533naa a2200433 a 4500
001 1906840
005 2018-09-05
008 2011 bl uuuu u00u1 u #d
024 7 $a10.1016/j.geoderma.2011.09.009$2DOI
100 1 $aSILVA, G. L.
245 $aSoil physical quality of Luvisols under agroforestry, natural vegetation and conventional crop management systems in the Brazilian semi-arid region.$h[electronic resource]
260 $c2011
520 $aThe imposition of agricultural systems changes the natural equilibrium of the soil to an extent that it becomes dependant on management practices and soil resilience. Agroforestry systems (AFs) mimic characteristics of natural ecosystems such as multistrata canopy and deep rooting and may minimize the consequences of these changes by providing soil protection and maintenance of conditions similar to those under natural vegetation. This study evaluates the physical properties of a Luvisol at a site where since 1997 alternative agroforestry systems (AFs) (agrosilvipasture?AGP and silvipasture?SILV), conventional crop management (CCM) and natural vegetation (NV) have been maintained. Undisturbed soil cores were collected in 2005 and submitted to a range of matric suction for which soil bulk density (BD), soil penetration resistance (Q) and soil water content (?) were determined. Water retention and penetration resistance were used to determine the least limiting water range (LLWR) and the slope of the soil water retention curve at its inflection point (S-value). Particle size, total organic carbon (TOC) and particle density were determined using the disturbed soil samples. Water retention and porosity followed the sequence NVNSILVNCCMNAGP. The AFs studied (AGP and SILV) improved or maintained soil physical quality when compared to NV with no significant differences between the S-values of 0.044, 0.042 and 0.050, respectively. However, the S-value of 0.035 for CCM indicates that this management was unable to maintain soil physical quality on the same levels as AFs and NV. The decrease of LLWR with BD occurred for all treatments, and the BD at a maximum effect (LLWR=0) which is called the critical BD (BDc), was, respectively, 1.69, 1.62, 1.56 and 1.56 Mg m?3 for AGP, SILV, NV and CCM. The larger values of LLWR for AFs (AGP and SILV) are similar to the value for NV, with associated superior aeration, matric suction and reduced resistance to penetration by roots. Indices such as LLWR and S-value were suitably sensitive and could be used in future research, but it is important to identify other potential indices for these situations that can show how quickly changes in soil quality may occur.
650 $aAgroecology
650 $aBrazil
650 $aHygroscopicity
650 $aSemiarid soils
650 $aSoil management
650 $aSoil penetration resistance
650 $aSoil structure
650 $aCaatinga
650 $aEstrutura do solo
650 $aManejo do solo
650 $aRetenção de água no solo
650 $aSolo
653 $aAgroecologia
653 $aAgrofloresta
653 $aAgroforestry systems
653 $aCódigo florestal
653 $aHigroscopicidade
653 $aLeast limiting water range
653 $aResistência à penetração
653 $aS-value
653 $aSistemas agroflorestais
700 1 $aLIMA, H. V.
700 1 $aCAMPANHA, M. M.
700 1 $aGILKES, R. J.
700 1 $aOLIVEIRA, T. S.
773 $tGeoderma, Amsterdam$gv. 167/168, p. 61-70, Nov. 2011.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
06/09/2023 |
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Data da última atualização: |
06/09/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 2 |
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Autoria: |
SANTOS, T. T. M. dos; SANTANA, M. V.; MASCARIN, G. M.; ARTHURS, S. P.; FERNANDES, P. M. |
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Afiliação: |
TÁSSIA TUANE MOREIRA DOS SANTOS, UNIVERSIDADE FEDERAL DE GOIÁS; MARCUS V SANTANA, UNIVERSIDADE FEDERAL DE GOIÁS; GABRIEL MOURA MASCARIN, CNPMA; STEVEN P ARTHURS, BIOBEE; PAULO M FERNANDES, UNIVERSIDADE FEDERAL DE GOIÁS. |
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Título: |
Collecting young nests of Atta spp. is more efficient to establish laboratory colonies than collecting founder queens after nuptial flights |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
International Journal of Tropical Insect Science, 2023. |
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ISSN: |
1742-7592 |
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DOI: |
https://doi.org/10.1007/s42690-023-01060-0 |
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Idioma: |
Inglês |
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Notas: |
Online first. |
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Conteúdo: |
Abstract: The locations of leaf-cutting ant (Atta spp.) nests present logistical challenges for researchers, due the environmental conditions, accessibility, difficult manipulation and other complicating factors for conducting manipulative experiments. A method to circumvent this obstacle lies in establishing ant colonies in the laboratory microcosm. Our objective was to compare two methods for establishing colonies of Atta spp. in the laboratory. In one approach Atta colonies were established by collecting founder queens after their mating flights, while in second approach, founder nests (founder colonies) were obtained by collecting queens, workers, and fungal gardens. In the first method, queens found on the ground after their nuptial flights (120 in 2017; 98 in 2019) were collected and established in laboratory rearing containers. In the second method, three to five months after mating flight, we hand-collected young nests of leaf-cutting ants (94 in 2018; 71 in 2020). All materials (queen, fungal garden, and workers) were transferred into rearing units (plastic pots). Field-collected founder queens and young nests were observed for queen mortality, fungal healthiness, and overall development. Results showed that most founder queens collected from mating flights failed to establish healthy colonies. Founder queens? mortality reached up to 98.3% in 2017, and 100% in 2020. More successful establishment of laboratory colonies was attained with field-collected young nests. In this method, we observed 83.3% and 53.5% establishment success in 2017 and 2020, respectively. Field-collection of young nests is a relatively simple and efficient method for successful establishing and rearing of Atta spp. in laboratory conditions. MenosAbstract: The locations of leaf-cutting ant (Atta spp.) nests present logistical challenges for researchers, due the environmental conditions, accessibility, difficult manipulation and other complicating factors for conducting manipulative experiments. A method to circumvent this obstacle lies in establishing ant colonies in the laboratory microcosm. Our objective was to compare two methods for establishing colonies of Atta spp. in the laboratory. In one approach Atta colonies were established by collecting founder queens after their mating flights, while in second approach, founder nests (founder colonies) were obtained by collecting queens, workers, and fungal gardens. In the first method, queens found on the ground after their nuptial flights (120 in 2017; 98 in 2019) were collected and established in laboratory rearing containers. In the second method, three to five months after mating flight, we hand-collected young nests of leaf-cutting ants (94 in 2018; 71 in 2020). All materials (queen, fungal garden, and workers) were transferred into rearing units (plastic pots). Field-collected founder queens and young nests were observed for queen mortality, fungal healthiness, and overall development. Results showed that most founder queens collected from mating flights failed to establish healthy colonies. Founder queens? mortality reached up to 98.3% in 2017, and 100% in 2020. More successful establishment of laboratory colonies was attained with field-collected young nests. I... Mostrar Tudo |
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Palavras-Chave: |
Atta spp. |
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Thesagro: |
Criação; Formiga; Laboratório; Ninho. |
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Thesaurus NAL: |
Ant nests; Laboratory rearing; Leaf-cutting ants. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 02666naa a2200301 a 4500
001 2156500
005 2023-09-06
008 2023 bl uuuu u00u1 u #d
022 $a1742-7592
024 7 $ahttps://doi.org/10.1007/s42690-023-01060-0$2DOI
100 1 $aSANTOS, T. T. M. dos
245 $aCollecting young nests of Atta spp. is more efficient to establish laboratory colonies than collecting founder queens after nuptial flights$h[electronic resource]
260 $c2023
500 $aOnline first.
520 $aAbstract: The locations of leaf-cutting ant (Atta spp.) nests present logistical challenges for researchers, due the environmental conditions, accessibility, difficult manipulation and other complicating factors for conducting manipulative experiments. A method to circumvent this obstacle lies in establishing ant colonies in the laboratory microcosm. Our objective was to compare two methods for establishing colonies of Atta spp. in the laboratory. In one approach Atta colonies were established by collecting founder queens after their mating flights, while in second approach, founder nests (founder colonies) were obtained by collecting queens, workers, and fungal gardens. In the first method, queens found on the ground after their nuptial flights (120 in 2017; 98 in 2019) were collected and established in laboratory rearing containers. In the second method, three to five months after mating flight, we hand-collected young nests of leaf-cutting ants (94 in 2018; 71 in 2020). All materials (queen, fungal garden, and workers) were transferred into rearing units (plastic pots). Field-collected founder queens and young nests were observed for queen mortality, fungal healthiness, and overall development. Results showed that most founder queens collected from mating flights failed to establish healthy colonies. Founder queens? mortality reached up to 98.3% in 2017, and 100% in 2020. More successful establishment of laboratory colonies was attained with field-collected young nests. In this method, we observed 83.3% and 53.5% establishment success in 2017 and 2020, respectively. Field-collection of young nests is a relatively simple and efficient method for successful establishing and rearing of Atta spp. in laboratory conditions.
650 $aAnt nests
650 $aLaboratory rearing
650 $aLeaf-cutting ants
650 $aCriação
650 $aFormiga
650 $aLaboratório
650 $aNinho
653 $aAtta spp
700 1 $aSANTANA, M. V.
700 1 $aMASCARIN, G. M.
700 1 $aARTHURS, S. P.
700 1 $aFERNANDES, P. M.
773 $tInternational Journal of Tropical Insect Science, 2023.
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