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dc.contributor.authorBaraibar Padró, Bàrbara
dc.contributor.authorTorra Farré, Joel
dc.contributor.authorWesterman, Paula Renate
dc.date.accessioned2016-11-23T10:26:00Z
dc.date.issued2011
dc.identifier.issn0929-1393
dc.identifier.urihttp://hdl.handle.net/10459.1/58623
dc.description.abstractHarvester ants are important weed seed predators in semi-arid cereal fields. Densities of harvester ants vary considerably across fields and so do concomitant weed seed predation rates, however, causes for variability are largely unknown. Understanding the factors that affect ant density may help to identify areas where high natural weed seed control is likely and management factors that could help to enhance ant densities where they are low. Messor barbarus ant density was approximated by estimates of nest density and nest size, and these were correlated to different edaphic, topographic and crop management factors in 34 no-till and 6 minimally tilled cereal fields. The number of years since conversion to no-till explained 12.6% of variability in ant nest density. No other variable could explain nest densities. M. barbarus ant and nest densities increased with increasing number of years of no-till, reached a peak at 11–12 years, after which densities decreased again. Overcompensation by a large cohort of newly established queens could provide an explanation for this observation. Other factors not included in this study, in particular food (seeds) availability, may play an additional role in determining ant density.ca_ES
dc.description.sponsorshipFinancial support was provided by Generalitat de Catalunya (PhD grants, F.I.) with the support of the EU Social Fund, Ramón y Cajal grant and Ministerio de Educación y Ciencia (Project AGL 2007-60828).ca_ES
dc.language.isoengca_ES
dc.publisherElsevierca_ES
dc.relationMIECI/PN2004-2007/AGL2007-60828
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1016/j.apsoil.2011.08.012ca_ES
dc.relation.ispartofApplied Soil Ecology, 2011, vol. 51, p. 60-65ca_ES
dc.rights(c) Elsevier B.V., 2011ca_ES
dc.subjectColony establishmentca_ES
dc.subjectColony survivalca_ES
dc.subjectColony growthca_ES
dc.subjectNest sizeca_ES
dc.subjectYears of no-tillca_ES
dc.titleHarvester ant (Messor barbarus (L.)) density as related to soil properties, topography and management in semi-arid cerealsca_ES
dc.typearticleca_ES
dc.identifier.idgrec017318
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.1016/j.apsoil.2011.08.012
dc.date.embargoEndDate2025-01-01


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