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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
24/08/2012 |
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Data da última atualização: |
20/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MARICHAL, R.; GRIMALDI, M.; MATHIEU, J.; BROWN, G. G.; SILVA JUNIOR, M. L. da; PRAXEDES, C.; MARTINS, M. B.; VELASQUEZ, E.; LAVELLE, P. |
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Afiliação: |
RAPHAEL MARICHAL, Museu Paraense Emilio Goeldi; MICHEL GRIMALDI, RD, UMR Bioemco; JEROME MATHIEU, UPMC Université Paris; GEORGE GARDNER BROWN, CNPF; MARIO LOPES DA SILVA JUNIOR, UFRA; CATARINA PRAXEDES, Museu Paraense Emilio Goeldi; MARLUCIA B. MARTINS, Museu Paraense Emilio Goeldi; ELENA VELASQUEZ, Universidad Nacional de Colombia; PATRICK LAVELLE, Centro Internacional de Agricultura Tropical (CIAT). |
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Título: |
Is invasion of deforested Amazonia by the earthworm Pontoscolex corethrurus driven by soil texture and chemical properties? |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Pedobiologia, v. 55, p. 233-240, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Pontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm communities could potentially also be key elements for understanding why P. corethrurus populations occur in some sites and not in others. MenosPontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm c... Mostrar Tudo |
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Thesagro: |
Minhoca. |
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Thesaurus Nal: |
Amazonia; Pontoscolex corethrurus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02376naa a2200253 a 4500
001 1932145
005 2015-02-20
008 2012 bl uuuu u00u1 u #d
100 1 $aMARICHAL, R.
245 $aIs invasion of deforested Amazonia by the earthworm Pontoscolex corethrurus driven by soil texture and chemical properties?$h[electronic resource]
260 $c2012
520 $aPontoscolex corethurus (Müller, 1857) is the most common invasive earthworm in disturbed lands in the tropics. Conditions required for its successful colonization of new plots are still not understood since some areas can be invaded while others, sometimes in the vicinity, are not. We kept newly hatched P. corethrurus in a wide range of Amazonian soils where population densities had been previously evaluated. We identified soil conditions that best sustain survival, soil ingestion and growth of P. corethrurus in controlled laboratory conditions and checked if presence/absence in the field was consistent with laboratory observations. While pH and Ca influenced survival; Mg and C content were the greatest determinants for growth and C:P, Mg and clay contents determined soil ingestion rates. Soil ingestion and growth rate were correlated. There were no differences in earthworm soil ingestion rates between invaded and non-invaded soils. However, growth rate and survival were higher in soils from invaded sites than in soils from non invaded sites, indicating that soil quality may play a role in the invasion process. We identified two cases where P. corethrurus did not occur: (1) unfavourable soil texture and chemical properties, but also some areas with and (2) favourable soil texture and chemical properties but no invasion. Other parameters, like vegetation cover (grass or trees), soil structure and compaction, soil hydrologic processes or biotic resistance of native earthworm communities could potentially also be key elements for understanding why P. corethrurus populations occur in some sites and not in others.
650 $aAmazonia
650 $aPontoscolex corethrurus
650 $aMinhoca
700 1 $aGRIMALDI, M.
700 1 $aMATHIEU, J.
700 1 $aBROWN, G. G.
700 1 $aSILVA JUNIOR, M. L. da
700 1 $aPRAXEDES, C.
700 1 $aMARTINS, M. B.
700 1 $aVELASQUEZ, E.
700 1 $aLAVELLE, P.
773 $tPedobiologia$gv. 55, p. 233-240, 2012.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Pantanal. Para informações adicionais entre em contato com cpap.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
19/09/2011 |
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Data da última atualização: |
19/02/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 5 |
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Autoria: |
BERGIER, I.; NOVO, E. M. L. M.; RAMOS, F. M.; MAZZI, E. A.; RASERA, M. F. F. L. |
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Afiliação: |
IVAN BERGIER TAVARES DE LIMA, CPAP; EVLYN M. L. M. NOVO, INSTITUTO NACIONAL DE PESQUISAS ESPACIAIS; FERNANDO M. RAMOS, INSTITUTO NACIONAL DE PESQUISAS ESPACIAIS; EDMAR A. MAZZI, CENTRO DE ENERGIA NUCLEAR NA AGRICULTURA; MARIA F.F.L. RASERA, CENTRO DE ENERGIA NUCLEAR NA AGRICULTURA. |
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Título: |
Carbon dioxide and methane fluxes in the littoral zone of a tropical savanna reservoir (Corumbá, Brazil). |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Oecologia Australis, v. 15, n.3, p. 666-681, set. 2011. |
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DOI: |
10.4257/oeco.2011.1503.17 |
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Idioma: |
Inglês |
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Conteúdo: |
A series of dynamic chambers, an infrared photoacoustic gas analyzer and atmospheric and water quality sensors were deployed to determine CH4 and CO2 emissions and related environmental conditions in Corumbá Reservoir, Goiás, Brazil. Mean CH4 bubble fluxes in November 2004, and March and August 2005 were 0.05 ± 2.19, 4 ± 45 and 505 ± 1192mgCH4.m-2.d-1, respectively. Mean CH4 diffusive fluxes were 17 ± 6, 37 ± 9 and 69 ± 28mgCH4.m-2.d-1, and CO2 diffusive fluxes were respectively 59 ± 398, 385 ± 629 and 1466 ± 1223mgCO2.m-2.d-1. Gas fluxes varied according to the depth of the sampling sites in the littoral zone, though spatial or temporal patterns were not seasonally consistent. Changes in CH4 and CO2 emissions were likely associated with changes in sediment pressure, methanogenesis and methanotrophy induced by atmospheric and climate variations, such as cold fronts and hydrologic variations. |
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Thesagro: |
Metano. |
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Thesaurus NAL: |
methane. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01520naa a2200205 a 4500
001 1900936
005 2013-02-19
008 2011 bl --- 0-- u #d
024 7 $a10.4257/oeco.2011.1503.17$2DOI
100 1 $aBERGIER, I.
245 $aCarbon dioxide and methane fluxes in the littoral zone of a tropical savanna reservoir (Corumbá, Brazil).
260 $c2011
520 $aA series of dynamic chambers, an infrared photoacoustic gas analyzer and atmospheric and water quality sensors were deployed to determine CH4 and CO2 emissions and related environmental conditions in Corumbá Reservoir, Goiás, Brazil. Mean CH4 bubble fluxes in November 2004, and March and August 2005 were 0.05 ± 2.19, 4 ± 45 and 505 ± 1192mgCH4.m-2.d-1, respectively. Mean CH4 diffusive fluxes were 17 ± 6, 37 ± 9 and 69 ± 28mgCH4.m-2.d-1, and CO2 diffusive fluxes were respectively 59 ± 398, 385 ± 629 and 1466 ± 1223mgCO2.m-2.d-1. Gas fluxes varied according to the depth of the sampling sites in the littoral zone, though spatial or temporal patterns were not seasonally consistent. Changes in CH4 and CO2 emissions were likely associated with changes in sediment pressure, methanogenesis and methanotrophy induced by atmospheric and climate variations, such as cold fronts and hydrologic variations.
650 $amethane
650 $aMetano
700 1 $aNOVO, E. M. L. M.
700 1 $aRAMOS, F. M.
700 1 $aMAZZI, E. A.
700 1 $aRASERA, M. F. F. L.
773 $tOecologia Australis$gv. 15, n.3, p. 666-681, set. 2011.
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