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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
18/05/2001 |
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Data da última atualização: |
18/05/2001 |
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Autoria: |
LAVELLE, P.; BRIGNELL, D.; LEPAGE, M.; WOLTERS, V.; ROGER, P.; INESON, P.; HEAL, O. W.; DHILLION, S. |
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Título: |
Soil function in a chaging world: the role of invertebrate ecosystem engineers. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
European Journal of Soil Biology, Cambridge, v. 33, n. 4, p. 159-193, 1997. |
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Idioma: |
Inglês |
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Conteúdo: |
In this review, the interactions between plant, animal and microbial components of the soil biota are represented by a model which allocates a pivotal functional role to the large, abundant invertebrates which ingest or manipulate both organic and mineral material, forming long-lasting microstructures. These invertebrates are designated soil ecosystem engineers and it is argued using data on numerical and biomass densities, geographical distribution and known functional roles, that earthworms and termites are the most important engineers in terrestrial ecosystems. Evidence is presented that they may exert influence on the diversity and activity of biota in subordinate trophic levels, for example litter transformers, micropredators and microfloras mediating fundamental nutrient transformations. Links between the activity and diversity of engineers and the physical properties of soils, including structural heterogeneity, stability, distribution of organic matter and infiltration and retention of water are also described. In considering the probable effects of global change on engineers, it is hypothesized that living plants affect both the abundance and diversity of engineers, through the quantity and quality of litter and other effects. Changes in their communities will therefore affect engineers. Expected changes in temperature will expand the latitudinal distribution of termites and favour humivorous termites and endogeic earthworm species that feed in the soil. In some regions, however, these changes will not occur since local fauna may not include representatives of these groups. Although elevated CO2 may impact engineers through effects on plant growth (notably an increase in C/N ratio), land use intensification, particularly physical disturbance of forests, is of more immediate concern as changes in the functional group balance within engineers communitics can be demonstrated. In addition, exotic species of earthworms may colonize disturbed land, with adverse effects on soil structure. Disturbance affects termites by reducing diversity (especially of soil-feeding forms) and some species may reach crop pest status, owing to changes in the availability of organic matter. MenosIn this review, the interactions between plant, animal and microbial components of the soil biota are represented by a model which allocates a pivotal functional role to the large, abundant invertebrates which ingest or manipulate both organic and mineral material, forming long-lasting microstructures. These invertebrates are designated soil ecosystem engineers and it is argued using data on numerical and biomass densities, geographical distribution and known functional roles, that earthworms and termites are the most important engineers in terrestrial ecosystems. Evidence is presented that they may exert influence on the diversity and activity of biota in subordinate trophic levels, for example litter transformers, micropredators and microfloras mediating fundamental nutrient transformations. Links between the activity and diversity of engineers and the physical properties of soils, including structural heterogeneity, stability, distribution of organic matter and infiltration and retention of water are also described. In considering the probable effects of global change on engineers, it is hypothesized that living plants affect both the abundance and diversity of engineers, through the quantity and quality of litter and other effects. Changes in their communities will therefore affect engineers. Expected changes in temperature will expand the latitudinal distribution of termites and favour humivorous termites and endogeic earthworm species that feed in the soil. In some reg... Mostrar Tudo |
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Palavras-Chave: |
Fertility; Intensificacao; Intensification; Termites. |
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Thesagro: |
Clima; Ecologia; Ecossistema; Engenharia; Fertilidade; Isoptera; Minhoca; Solo; Zoologia. |
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Thesaurus Nal: |
climate; earthworms; ecology; ecosystems; engineering; Lumbricidae; soil; zoology. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03324naa a2200457 a 4500
001 1621205
005 2001-05-18
008 1997 bl --- 0-- u #d
100 1 $aLAVELLE, P.
245 $aSoil function in a chaging world$bthe role of invertebrate ecosystem engineers.
260 $c1997
520 $aIn this review, the interactions between plant, animal and microbial components of the soil biota are represented by a model which allocates a pivotal functional role to the large, abundant invertebrates which ingest or manipulate both organic and mineral material, forming long-lasting microstructures. These invertebrates are designated soil ecosystem engineers and it is argued using data on numerical and biomass densities, geographical distribution and known functional roles, that earthworms and termites are the most important engineers in terrestrial ecosystems. Evidence is presented that they may exert influence on the diversity and activity of biota in subordinate trophic levels, for example litter transformers, micropredators and microfloras mediating fundamental nutrient transformations. Links between the activity and diversity of engineers and the physical properties of soils, including structural heterogeneity, stability, distribution of organic matter and infiltration and retention of water are also described. In considering the probable effects of global change on engineers, it is hypothesized that living plants affect both the abundance and diversity of engineers, through the quantity and quality of litter and other effects. Changes in their communities will therefore affect engineers. Expected changes in temperature will expand the latitudinal distribution of termites and favour humivorous termites and endogeic earthworm species that feed in the soil. In some regions, however, these changes will not occur since local fauna may not include representatives of these groups. Although elevated CO2 may impact engineers through effects on plant growth (notably an increase in C/N ratio), land use intensification, particularly physical disturbance of forests, is of more immediate concern as changes in the functional group balance within engineers communitics can be demonstrated. In addition, exotic species of earthworms may colonize disturbed land, with adverse effects on soil structure. Disturbance affects termites by reducing diversity (especially of soil-feeding forms) and some species may reach crop pest status, owing to changes in the availability of organic matter.
650 $aclimate
650 $aearthworms
650 $aecology
650 $aecosystems
650 $aengineering
650 $aLumbricidae
650 $asoil
650 $azoology
650 $aClima
650 $aEcologia
650 $aEcossistema
650 $aEngenharia
650 $aFertilidade
650 $aIsoptera
650 $aMinhoca
650 $aSolo
650 $aZoologia
653 $aFertility
653 $aIntensificacao
653 $aIntensification
653 $aTermites
700 1 $aBRIGNELL, D.
700 1 $aLEPAGE, M.
700 1 $aWOLTERS, V.
700 1 $aROGER, P.
700 1 $aINESON, P.
700 1 $aHEAL, O. W.
700 1 $aDHILLION, S.
773 $tEuropean Journal of Soil Biology, Cambridge$gv. 33, n. 4, p. 159-193, 1997.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
24/03/2011 |
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Data da última atualização: |
24/03/2011 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, S. M. O.; DIAS, T. A. B. |
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Afiliação: |
TEREZINHA APARECIDA BORGES DIAS, CENARGEN. |
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Título: |
VIII Feira Krahô de Sementes Tradicionais: participação dos guardiões da agrobiodiversidade local. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: ENCONTRO DO TALENTO ESTUDANTIL DA EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA, 15., 2010, Brasília, DF. Anais: resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. Resumo 114. |
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Páginas: |
p. 161 |
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Idioma: |
Português |
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Palavras-Chave: |
Agrobiodiversidade; Conservação on farm; Indígena. |
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Thesagro: |
Conservação. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00695nam a2200169 a 4500
001 1882472
005 2011-03-24
008 2010 bl uuuu u01u1 u #d
100 1 $aSILVA, S. M. O.
245 $aVIII Feira Krahô de Sementes Tradicionais$bparticipação dos guardiões da agrobiodiversidade local.
260 $aIn: ENCONTRO DO TALENTO ESTUDANTIL DA EMBRAPA RECURSOS GENÉTICOS E BIOTECNOLOGIA, 15., 2010, Brasília, DF. Anais: resumos dos trabalhos. Brasília, DF: Embrapa Recursos Genéticos e Biotecnologia, 2010. Resumo 114.$c2010
300 $ap. 161
650 $aConservação
653 $aAgrobiodiversidade
653 $aConservação on farm
653 $aIndígena
700 1 $aDIAS, T. A. B.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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