Impact of land management on soil macrofauna in the Eastern plains of Colombia
The effects of different types of land management on the soil macroinvertebrate communities on acid soil savannas of Colombia have been assessed using the Tropical Soil Biology and Fertility Program (TSBF) methodology. Invertebrates were identified among broad taxonomic units, TU (Orders or Families...
| Autores principales: | , , , , , , , , |
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
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International Center for Tropical Agriculture
2001
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/55167 |
| _version_ | 1855526194411208704 |
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| author | Decaëns, Thibaud Lavelle, Patrick M. Jiménez Jaén, J.J. Escobar, G. Rippstein, G Schneidmadl, J Sanz Scovino, José Ignacio Hoyos, P. Thomas, Richard J. |
| author_browse | Decaëns, Thibaud Escobar, G. Hoyos, P. Jiménez Jaén, J.J. Lavelle, Patrick M. Rippstein, G Sanz Scovino, José Ignacio Schneidmadl, J Thomas, Richard J. |
| author_facet | Decaëns, Thibaud Lavelle, Patrick M. Jiménez Jaén, J.J. Escobar, G. Rippstein, G Schneidmadl, J Sanz Scovino, José Ignacio Hoyos, P. Thomas, Richard J. |
| author_sort | Decaëns, Thibaud |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The effects of different types of land management on the soil macroinvertebrate communities on acid soil savannas of Colombia have been assessed using the Tropical Soil Biology and Fertility Program (TSBF) methodology. Invertebrates were identified among broad taxonomic units, TU (Orders or Families), counted and grouped in larger units, i.e., earthworms, termites, ants, beetles, spiders, miriapods, and "other invertebrates". Both the gallery forest and the savanna had the highest taxonomic richness and population density (average 4293 and 2830 individuals/m2, respectively) with a medium biomass (13.6 and 15.3 g/m2). Termites (47%) and earthworms (31%) were the major components of biomass. Fire had a spectacular short-term effect on macrofauna. After 6 months, the soil fauna had regenerated: biomass and density were not significantly different from values recorded in the initial savanna and taxonomic richness increased to 20 TU. Macroinvertebrate communities of improved pastures were characterized by a high biomass and taxonomic richness and a medium population density. Pastures of associations of African grasses and forage legumes, had greatest earthworm biomass (22.9 to 51.1 g/m2), i.e., 4 to 10 times greater than that of the native savanna. Earthworm populations under pastures were composed of native species, with a large macrofaunal diversity (26 to 32 TU represented). Annual high input cropping systems (rice and cassava) had the lowest biomass 3.2-4.3 g/m2 and density 429-592 individuals/m2 and a low taxonomic richness, i.e., 18 TU. Macroinvertebrate communities of the well drained savannas of Colombia are very sensitive to environmental changes associated with agricultural intensification. The results obtained in these studies suggests various alternatives to conserve and stimulate the activities of soil macrofauna. |
| format | Book Chapter |
| id | CGSpace55167 |
| 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 | CGSpace551672024-01-09T09:48:40Z Impact of land management on soil macrofauna in the Eastern plains of Colombia Decaëns, Thibaud Lavelle, Patrick M. Jiménez Jaén, J.J. Escobar, G. Rippstein, G Schneidmadl, J Sanz Scovino, José Ignacio Hoyos, P. Thomas, Richard J. intensive farming lumbricidae biomass land management savannas soil fauna density gallery forest taxonomic richness explotación agrícola intensiva biomasa ordenación de tierras sabanas fauna del suelo The effects of different types of land management on the soil macroinvertebrate communities on acid soil savannas of Colombia have been assessed using the Tropical Soil Biology and Fertility Program (TSBF) methodology. Invertebrates were identified among broad taxonomic units, TU (Orders or Families), counted and grouped in larger units, i.e., earthworms, termites, ants, beetles, spiders, miriapods, and "other invertebrates". Both the gallery forest and the savanna had the highest taxonomic richness and population density (average 4293 and 2830 individuals/m2, respectively) with a medium biomass (13.6 and 15.3 g/m2). Termites (47%) and earthworms (31%) were the major components of biomass. Fire had a spectacular short-term effect on macrofauna. After 6 months, the soil fauna had regenerated: biomass and density were not significantly different from values recorded in the initial savanna and taxonomic richness increased to 20 TU. Macroinvertebrate communities of improved pastures were characterized by a high biomass and taxonomic richness and a medium population density. Pastures of associations of African grasses and forage legumes, had greatest earthworm biomass (22.9 to 51.1 g/m2), i.e., 4 to 10 times greater than that of the native savanna. Earthworm populations under pastures were composed of native species, with a large macrofaunal diversity (26 to 32 TU represented). Annual high input cropping systems (rice and cassava) had the lowest biomass 3.2-4.3 g/m2 and density 429-592 individuals/m2 and a low taxonomic richness, i.e., 18 TU. Macroinvertebrate communities of the well drained savannas of Colombia are very sensitive to environmental changes associated with agricultural intensification. The results obtained in these studies suggests various alternatives to conserve and stimulate the activities of soil macrofauna. 2001 2015-01-28T14:17:30Z 2015-01-28T14:17:30Z Book Chapter https://hdl.handle.net/10568/55167 en Open Access International Center for Tropical Agriculture Decaëns, Thibaud; Lavelle, Patrick; Jiménez Jaén, Juan José; Escobar, Germán; Rippstein, Georges; Schneidmadl, J.; Sanz Scovino, José Ignacio; Hoyos, P.; Thomas, Richard J. 2001. Impact of land management on soil macrofauna in the Eastern plains 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. 19-41. (CIAT publication no. 324) |
| spellingShingle | intensive farming lumbricidae biomass land management savannas soil fauna density gallery forest taxonomic richness explotación agrícola intensiva biomasa ordenación de tierras sabanas fauna del suelo Decaëns, Thibaud Lavelle, Patrick M. Jiménez Jaén, J.J. Escobar, G. Rippstein, G Schneidmadl, J Sanz Scovino, José Ignacio Hoyos, P. Thomas, Richard J. Impact of land management on soil macrofauna in the Eastern plains of Colombia |
| title | Impact of land management on soil macrofauna in the Eastern plains of Colombia |
| title_full | Impact of land management on soil macrofauna in the Eastern plains of Colombia |
| title_fullStr | Impact of land management on soil macrofauna in the Eastern plains of Colombia |
| title_full_unstemmed | Impact of land management on soil macrofauna in the Eastern plains of Colombia |
| title_short | Impact of land management on soil macrofauna in the Eastern plains of Colombia |
| title_sort | impact of land management on soil macrofauna in the eastern plains of colombia |
| topic | intensive farming lumbricidae biomass land management savannas soil fauna density gallery forest taxonomic richness explotación agrícola intensiva biomasa ordenación de tierras sabanas fauna del suelo |
| url | https://hdl.handle.net/10568/55167 |
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