Population dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia

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dc.creatorJiménez Jaén, J.J.
dc.creatorMoreno, Alonso
dc.creatorLavelle, Patrick M.
dc.creatorDecaëns, Thibaud
dc.date2001
dc.date2015-01-28T14:17:30Z
dc.date2015-01-28T14:17:30Z
dc.date.accessioned2026-06-27T14:36:29Z
dc.descriptionMartiodrilus 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.
dc.identifierhttps://hdl.handle.net/10568/55170
dc.identifier.urihttp://hdl.handle.net/123456789/83059
dc.languageen
dc.publisherInternational Center for Tropical Agriculture
dc.rightsOpen Access
dc.sourceJiménez 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)
dc.subjectoligochaeta
dc.subjectsavannas
dc.subjectpopulation dynamics
dc.subjectdinámica de la población
dc.subjectsabanas
dc.titlePopulation dynamics and adaptive strategies of Martiodrilus carimaguensis (oligochaeta, glossoscolecidae), a native species from the well-drained savannas of Colombia
dc.typeBook Chapter

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