Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia

34 páginas, 4 figuras, 8 tablas.

Detalhes bibliográficos
Autores: Jiménez, Juan J., Moreno, A. G., Decaëns, Thibaud, Lavelle, Patrick, Fisher, M. J., Thomas, Richard J.
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:1998
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/103033
Acesso em linha:http://hdl.handle.net/10261/103033
Access Level:acceso abierto
Palavra-chave:Abundance
Biomass
Diversity
Earthworm community
Tropical savannas
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spelling Earthworm communities in native savannas and man-made pastures of the Eastern Plains of ColombiaJiménez, Juan J.Moreno, A. G.Decaëns, ThibaudLavelle, PatrickFisher, M. J.Thomas, Richard J.AbundanceBiomassDiversityEarthworm communityTropical savannas34 páginas, 4 figuras, 8 tablas.The structure and seasonal changes of earthworm communities were evaluated in a natural savanna and in a improved grass-legume pasture in a Colombian oxisol over a period of 18 months. One plot of 90×90 m was isolated in each of the systems and each month five samples of 1 m2×0.5 m and ten of 20×20×20 cm were randomly selected from a stratified block design. Species richness was similar in the two evaluated plots (seven species), whereas diversity measured by the index, H (Shannon and Weaver 1949) was clearly different, i.e. H=2.89 in natural savanna and H=1.29 in pasture. This is explained by differences in earthworm community structure. The average annual density in the savanna was 49.8, ranging from 10.8 to 135.8 individuals (ind) m–2, and biomass was 3.3 g m–2 (hand-sorting method), ranging from 0.9 to 11.5 g m–2. In the man-made pasture, density was 80.1 ind m–2 on average, ranging from 24 to 215.8 ind m–2 and biomass was more than tenfold higher, ranging from 29.2 to 110.4 g m–2. This was especially due to the presence of a large glossoscolecid anecic species, Martiodrilus carimaguensis Jiménez and Moreno, which has been greatly favoured by conversion of savanna to pasture. Endogeic species were dominant in the natural savanna whereas the anecic species accounted for 88% of total earthworm biomass in the pasture. Total earthworm density and biomass were significantly different in the two systems studied (t-test). The results indicate a clearly positive response of earthworm communities to improved pastures, a type of land use that is being increasingly adopted in moist neotropical savannas.This study was part of collaborative research between the STD-3 Macrofauna Project, an international programme supported by the European Community focused on the biology, ecology and possibilities of management of earthworm species present in natural and distributed ecosystems in the tropics, and the Tropical Lowlands Program at the International Center for Tropical Agriculture, CIAT (International Centre for Tropical Agriculture; Cali, Colombia). This study was supported in part by a research grant within the Macrofauna programme.We want to thank CIAT, especially all at the Tropical Lowlands Program for scientific, technical and human support. The invaluable help provided by field workers at Carimagua in this back-breaking work is undoubtedly greatly appreciated. Finally, the first author wishes to thank two anonymous referees for their helpful comments on the previous manuscript.Peer reviewedSpringer Nature201420141998info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/103033reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/s003740050469Noinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1030332026-05-22T06:33:51Z
dc.title.none.fl_str_mv Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
title Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
spellingShingle Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
Jiménez, Juan J.
Abundance
Biomass
Diversity
Earthworm community
Tropical savannas
title_short Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
title_full Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
title_fullStr Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
title_full_unstemmed Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
title_sort Earthworm communities in native savannas and man-made pastures of the Eastern Plains of Colombia
dc.creator.none.fl_str_mv Jiménez, Juan J.
Moreno, A. G.
Decaëns, Thibaud
Lavelle, Patrick
Fisher, M. J.
Thomas, Richard J.
author Jiménez, Juan J.
author_facet Jiménez, Juan J.
Moreno, A. G.
Decaëns, Thibaud
Lavelle, Patrick
Fisher, M. J.
Thomas, Richard J.
author_role author
author2 Moreno, A. G.
Decaëns, Thibaud
Lavelle, Patrick
Fisher, M. J.
Thomas, Richard J.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Abundance
Biomass
Diversity
Earthworm community
Tropical savannas
topic Abundance
Biomass
Diversity
Earthworm community
Tropical savannas
description 34 páginas, 4 figuras, 8 tablas.
publishDate 1998
dc.date.none.fl_str_mv 1998
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/103033
url http://hdl.handle.net/10261/103033
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/s003740050469
No
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.228081

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