Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia
Martiodrilus carimaguensis (Oligochaeta, Glossoscolecidae) is a large, anecic native earthworm species which was found in natural and disturbed savannas in the Oxisols of the Colombian Llanos. The population dynamics of this species were studied in a native savanna, and in a 17-year-old grazed grass...
| Main Authors: | , , , |
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| Format: | Book Chapter |
| Language: | Inglés |
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International Center for Tropical Agriculture
2001
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/55170 |
| _version_ | 1855521994365206528 |
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| author | Jiménez Jaén, J.J. Moreno, Alonso Lavelle, Patrick M. Decaëns, Thibaud |
| author_browse | Decaëns, Thibaud Jiménez Jaén, J.J. Lavelle, Patrick M. Moreno, Alonso |
| author_facet | Jiménez Jaén, J.J. Moreno, Alonso Lavelle, Patrick M. Decaëns, Thibaud |
| author_sort | Jiménez Jaén, J.J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Martiodrilus carimaguensis (Oligochaeta, Glossoscolecidae) is a large, anecic native earthworm species which was found in natural and disturbed savannas in the Oxisols of the Colombian Llanos. The population dynamics of this species were studied in a native savanna, and in a 17-year-old grazed grass-legume-pasture where density and biomass were higher. Monthly cast deposition on the soil surface in the improved pasture was 38.4x10 3 fresh casts/ha, 11 times greater than in the native savanna. A strong relationship was found between numbers of M. carimaguensis and numbers of fresh surface casts. Different patterns of adaptation to the dry season were observed for adults and juveniles. Adults are active for 8 months whereas juveniles enter diapause 3-4 months earlier. The vertical distribution pattern of the earthworm population also shows marked seasonal changes. |
| format | Book Chapter |
| id | CGSpace55170 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2001 |
| publishDateRange | 2001 |
| publishDateSort | 2001 |
| publisher | International Center for Tropical Agriculture |
| publisherStr | International Center for Tropical Agriculture |
| record_format | dspace |
| spelling | CGSpace551702024-01-09T09:48:27Z Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia Jiménez Jaén, J.J. Moreno, Alonso Lavelle, Patrick M. Decaëns, Thibaud oligochaeta savannas population dynamics dinámica de la población sabanas Martiodrilus carimaguensis (Oligochaeta, Glossoscolecidae) is a large, anecic native earthworm species which was found in natural and disturbed savannas in the Oxisols of the Colombian Llanos. The population dynamics of this species were studied in a native savanna, and in a 17-year-old grazed grass-legume-pasture where density and biomass were higher. Monthly cast deposition on the soil surface in the improved pasture was 38.4x10 3 fresh casts/ha, 11 times greater than in the native savanna. A strong relationship was found between numbers of M. carimaguensis and numbers of fresh surface casts. Different patterns of adaptation to the dry season were observed for adults and juveniles. Adults are active for 8 months whereas juveniles enter diapause 3-4 months earlier. The vertical distribution pattern of the earthworm population also shows marked seasonal changes. 2001 2015-01-28T14:17:30Z 2015-01-28T14:17:30Z Book Chapter https://hdl.handle.net/10568/55170 en Open Access International Center for Tropical Agriculture Jiménez Jaén, Juan José; Moreno, A.G.; Lavelle, Patrick; Decaëns, Thibaud. 2001. Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia. In: Jiménez Jaén, Juan José; Thomas, Richard J. (eds.). Nature`s plow: Soil macroinvertebrate communities in the neotropical savannas of Colombia. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. p. 69-78. (CIAT publication no. 324) |
| spellingShingle | oligochaeta savannas population dynamics dinámica de la población sabanas Jiménez Jaén, J.J. Moreno, Alonso Lavelle, Patrick M. Decaëns, Thibaud Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia |
| title | Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia |
| title_full | Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia |
| title_fullStr | Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia |
| title_full_unstemmed | Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia |
| title_short | Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia |
| title_sort | population dynamics and adaptive strategies of martiodrilus carimaguensis oligochaeta glossoscolecidae a native species from the well drained savannas of colombia |
| topic | oligochaeta savannas population dynamics dinámica de la población sabanas |
| url | https://hdl.handle.net/10568/55170 |
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