Only a small part of the spatio-temporal structures of earthworm distribution was correlated with soil properties. Small species were more abundant in patches were soil was more compact, while large species were associated with high root biomass and total C levels. The question whether earthworm ...
Decaëns, Thibaud
,
Rossi, JP
,
[Spatio-temporal structure of an earthworm community and soil heterogeneity in a tropical pasture (Carimagua, Colombia)]
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Spatio-temporal structure of an earthworm community and soil heterogeneity in a tropical pasture (Carimagua, Colombia)
Earthworms are generally considered to fulfill the definition of ecosystem engineers. The casts they produce are recognised to have a great importance in the regulation of soil processes. Lifetimes and degradation rates of these structures remain poorly known. In this study, the dynamics of disap...
Decaëns, Thibaud
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[Degradation dynamics of surface earthworms casts in grasslands of the Eastern plains of Colombia]
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Degradation dynamics of surface earthworms casts in grasslands of the Eastern plains of Colombia
Earthworms are considered soil ecosystem engineers that play an important role in soil organic matter dynamics and physical structure. Due to both their size and activities these organisms can accelerate the decomposition and mineralization of organic matter by reducing the size of residues to pa...
Jiménez Jaén, J.J.
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Cepeda, A
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Friesen, Dennis K.
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Decaëns, Thibaud
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Oberson, Astrid
,
[Phosphorus availability in casts of an anecic savanna earthworms in Colombian oxisol]
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Phosphorus availability in casts of an anecic savanna earthworms in Colombian oxisol
The vertical distribution of native earthworm species from natural and disturbed savannas in the Oxisols of the Colombian Llanos was assessed in a native savanna and in a 17-year-old grazed grass-legume pasture during a period of 17?months. Different patterns of vertical stratification were obser...
Jiménez Jaén, J.J.
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Decaëns, Thibaud
,
[Vertical distribution of earthworms in grassland soils of the Colombian Llanos]
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Vertical distribution of earthworms in grassland soils of the Colombian Llanos
The effect of different types of land management on the soil macrofauna of the savanna has been assesed using the T.S.B.F. method. Macrofauna of the forest and savanna has a high density (4293 and 2830 ind.m(2)) and moderate biomass (13.6 and 15.3 g.m(-2)). Traditional grazing significantly incre...
Decaëns, Thibaud
,
Lavelle, Patrick M.
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Jiménez Jaén, J.J.
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Escobar, G.
,
Rippstein, G
,
[Impact of land management on soil macrofauna in the Oriental Llanos of Colombia]
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Impact of land management on soil macrofauna in the Oriental Llanos of Colombia
Tropical savannas constitute one of the most predominant ecosystems in South America with an overall extension of almost 250 millions ha. The role that these grasslands play over the environment is a key factor to understand its functioning and the response to changes induced by humankind. Moreov...
Jiménez Jaén, J.J.
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Moreno, Alonso
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Decaëns, Thibaud
,
Rossi, JP
,
Lavelle, Patrick M.
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[The earthworms community of Carimagua (Eastern plains, Colombia) : taxonomy and ecology of species. Looking forward to a sustainable way of land management?]
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The earthworms community of Carimagua (Eastern plains, Colombia) : taxonomy and ecology of species. Looking forward to a sustainable way of land management?
Decaëns, Thibaud
,
Mariani, L
,
Lavelle, Patrick M.
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[Las comunidades de la macrofauna de la superficie del suelo asociadas con las heces de las lombrices de tierra en los Llanos Orientales de Colombia]
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Las comunidades de la macrofauna de la superficie del suelo asociadas con las heces de las lombrices de tierra en los Llanos Orientales de Colombia
Decaëns, Thibaud
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Jiménez Jaén, J.J.
,
Lavelle, Patrick M.
,
[Efecto de la exclusión de la lombriz anécica Martiodrilus carimaguensis Jiménez y Moreno en las propiedades del suelo y en el crecimiento de las plantas, en pastizales de los Llanos Orientales de Colombia]
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Efecto de la exclusión de la lombriz anécica Martiodrilus carimaguensis Jiménez y Moreno en las propiedades del suelo y en el crecimiento de las plantas, en pastizales de los Llanos Orientales de Colombia
Decaëns, Thibaud
,
[Dinámica de la degradación de las heces superficiales de la lombriz de tierra en áreas de sabana y de pastizal en los Llanos Orientales de Colombia]
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Dinámica de la degradación de las heces superficiales de la lombriz de tierra en áreas de sabana y de pastizal en los Llanos Orientales de Colombia
Jiménez Jaén, J.J.
,
Decaëns, Thibaud
,
Thomas, Richard J.
,
Lavelle, Patrick M.
,
[La macrofauna del suelo: un recurso natural aprovechable pero poco conocido]
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La macrofauna del suelo: un recurso natural aprovechable pero poco conocido