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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
15/09/2008 |
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Data da última atualização: |
15/09/2008 |
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Autoria: |
AIRA, M.; MCNAMARA, N. P.; PIEARCE, T. G.; DOMÍNGUEZ, J. |
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Título: |
Microbial communities of Lumbricus terrestris (L.) middens: structure, activity and changes through time in relation to earthworm presence. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
We studied the microbial communities (structure and activity) of the soil system formed by
middens of Lumbricus terrestris and the soil below and surrounding them, and the role of
earthworms in maintaining these structures through time. We set up an experiment in which
middens were either left (control) or removed from their original place (manipulated) and left in
a next area free of worms for 2 months. The transplanted middens were in areas with no evident
signs of earthworm activity (e.g. casts). We took samples of middens, soil below and soil
surrounding (control and manipulated) after 1 and 2 months of manipulation and analyzed the
phospholipid fatty acid (PLFA) profiles and measured respiratory fluxes of CO2 and CH4.
Microbial communities of middens clearly differed from those of soil below and surrounding soil
samples; further, in control middens changes in microbial communities were stronger than in
manipulated middens. Moreover, total PLFAs and bacterial PLFAs (gram negative and positive
bacterial PLFAs) were greater in manipulated than control middens, as well as organic C. This
suggests that earthworms may be competing with microorganisms for C sources, since in organic
C of middens with earthworms decreased with time. Fungi PLFAs were higher in middens and
increased in abundance over time, although abundance was not affected by earthworm
presence. Respiratory fluxes of CO2 were always higher in control middens, revealing the main
role of earthworms in enhancing microbial activity of middens MenosWe studied the microbial communities (structure and activity) of the soil system formed by
middens of Lumbricus terrestris and the soil below and surrounding them, and the role of
earthworms in maintaining these structures through time. We set up an experiment in which
middens were either left (control) or removed from their original place (manipulated) and left in
a next area free of worms for 2 months. The transplanted middens were in areas with no evident
signs of earthworm activity (e.g. casts). We took samples of middens, soil below and soil
surrounding (control and manipulated) after 1 and 2 months of manipulation and analyzed the
phospholipid fatty acid (PLFA) profiles and measured respiratory fluxes of CO2 and CH4.
Microbial communities of middens clearly differed from those of soil below and surrounding soil
samples; further, in control middens changes in microbial communities were stronger than in
manipulated middens. Moreover, total PLFAs and bacterial PLFAs (gram negative and positive
bacterial PLFAs) were greater in manipulated than control middens, as well as organic C. This
suggests that earthworms may be competing with microorganisms for C sources, since in organic
C of middens with earthworms decreased with time. Fungi PLFAs were higher in middens and
increased in abundance over time, although abundance was not affected by earthworm
presence. Respiratory fluxes of CO2 were always higher in control middens, revealing the main
role of earthworms in enhancing m... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02295naa a2200157 a 4500
001 1314794
005 2008-09-15
008 2008 bl uuuu u00u1 u #d
100 1 $aAIRA, M.
245 $aMicrobial communities of Lumbricus terrestris (L.) middens$bstructure, activity and changes through time in relation to earthworm presence.
260 $c2008
520 $aWe studied the microbial communities (structure and activity) of the soil system formed by middens of Lumbricus terrestris and the soil below and surrounding them, and the role of earthworms in maintaining these structures through time. We set up an experiment in which middens were either left (control) or removed from their original place (manipulated) and left in a next area free of worms for 2 months. The transplanted middens were in areas with no evident signs of earthworm activity (e.g. casts). We took samples of middens, soil below and soil surrounding (control and manipulated) after 1 and 2 months of manipulation and analyzed the phospholipid fatty acid (PLFA) profiles and measured respiratory fluxes of CO2 and CH4. Microbial communities of middens clearly differed from those of soil below and surrounding soil samples; further, in control middens changes in microbial communities were stronger than in manipulated middens. Moreover, total PLFAs and bacterial PLFAs (gram negative and positive bacterial PLFAs) were greater in manipulated than control middens, as well as organic C. This suggests that earthworms may be competing with microorganisms for C sources, since in organic C of middens with earthworms decreased with time. Fungi PLFAs were higher in middens and increased in abundance over time, although abundance was not affected by earthworm presence. Respiratory fluxes of CO2 were always higher in control middens, revealing the main role of earthworms in enhancing microbial activity of middens
700 1 $aMCNAMARA, N. P.
700 1 $aPIEARCE, T. G.
700 1 $aDOMÍNGUEZ, J.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
29/10/2012 |
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Data da última atualização: |
13/03/2015 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SANTOS, J. Z. L.; FURTINI NETO, A. E.; RESENDE, A. V. de; CARNEIRO, L. F.; CURI, N. |
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Afiliação: |
ALVARO VILELA DE RESENDE, CNPMS. |
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Título: |
Frações de fósforo e carbono orgânico em Latossolos de Cerrado sob diferentes usos. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa, MG: Sociedade Brasileira de Ciência do Solo, 2012. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Notas: |
Fertbio 2012. |
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Palavras-Chave: |
Substâncias húmicas. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/68900/1/Fracoes-fosforo.pdf
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Marc: |
LEADER 00915nam a2200181 a 4500
001 1938300
005 2015-03-13
008 2012 bl uuuu u00u1 u #d
100 1 $aSANTOS, J. Z. L.
245 $aFrações de fósforo e carbono orgânico em Latossolos de Cerrado sob diferentes usos.$h[electronic resource]
260 $aIn: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 30.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 14.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 12.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 9.; SIMPÓSIO SOBRE SELÊNIO NO BRASIL, 1., 2012, Maceió. A responsabilidade socioambiental da pesquisa agrícola: anais. Viçosa, MG: Sociedade Brasileira de Ciência do Solo$c2012
300 $c1 CD-ROM.
500 $aFertbio 2012.
653 $aSubstâncias húmicas
700 1 $aFURTINI NETO, A. E.
700 1 $aRESENDE, A. V. de
700 1 $aCARNEIRO, L. F.
700 1 $aCURI, N.
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Embrapa Milho e Sorgo (CNPMS) |
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