Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)

Autores
Tálamo, Andrés; Barchuk, Alicia Haydee; Garibaldi, Lucas Alejandro; Trucco Aleman, Carlos Eduardo; Cardozo, Silvana; Mohr, Federico
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Successful persistence of dry forests depends on tree regeneration, which depends on a balance of complex biotic interactions. In particular, the relative importance and interactive effects of shrubs and herbivores on tree regeneration are unclear. In a manipulative study, we investigated if thornless shrubs have a direct net effect, an indirect positive effect mediated by livestock, and/or an indirect negative effect mediated by small vertebrates on tree regeneration of two key species of Chaco forest (Argentina). In a spatial association study, we also explored the existence of net positive interactions from thorny and thornless shrubs. The number of Schinopsis lorentzii seedlings was highest under artificial shade with native herbivores and livestock excluded. Even excluding livestock, no seedlings were found with natural conditions (native herbivores present with natural shade or direct sunlight) at the end of the experiment. Surprisingly, seedling recruitment was not enhanced under thornless shrubs, because there was a complementary positive effect of shade and interference. Moreover, thornless shrubs had neither positive nor negative effects on regeneration of S. lorentzii. Regeneration of Aspidosperma quebracho-blanco was minimal in all treatments. In agreement with the experiment, spatial distributions of saplings of both tree species were independent of thornless shrubs, but positively associated with thorny shrubs. Our results suggest that in general thornless shrubs may have a negligible effect and thorny shrubs a net positive effect on tree regeneration in dry forests. These findings provide a conceptual framework for testing the impact of biotic interactions on seedling recruitment in other dry forests.
Fil: Tálamo, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Barchuk, Alicia Haydee. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional de Rio Negro. Sede Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Trucco Aleman, Carlos Eduardo. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cardozo, Silvana. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Mohr, Federico. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Materia
Facilitation
Herbivory
Livestock
Nurse Plants
Spatial Association
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
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CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/48656
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)Tálamo, AndrésBarchuk, Alicia HaydeeGaribaldi, Lucas AlejandroTrucco Aleman, Carlos EduardoCardozo, SilvanaMohr, FedericoFacilitationHerbivoryLivestockNurse PlantsSpatial Associationhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Successful persistence of dry forests depends on tree regeneration, which depends on a balance of complex biotic interactions. In particular, the relative importance and interactive effects of shrubs and herbivores on tree regeneration are unclear. In a manipulative study, we investigated if thornless shrubs have a direct net effect, an indirect positive effect mediated by livestock, and/or an indirect negative effect mediated by small vertebrates on tree regeneration of two key species of Chaco forest (Argentina). In a spatial association study, we also explored the existence of net positive interactions from thorny and thornless shrubs. The number of Schinopsis lorentzii seedlings was highest under artificial shade with native herbivores and livestock excluded. Even excluding livestock, no seedlings were found with natural conditions (native herbivores present with natural shade or direct sunlight) at the end of the experiment. Surprisingly, seedling recruitment was not enhanced under thornless shrubs, because there was a complementary positive effect of shade and interference. Moreover, thornless shrubs had neither positive nor negative effects on regeneration of S. lorentzii. Regeneration of Aspidosperma quebracho-blanco was minimal in all treatments. In agreement with the experiment, spatial distributions of saplings of both tree species were independent of thornless shrubs, but positively associated with thorny shrubs. Our results suggest that in general thornless shrubs may have a negligible effect and thorny shrubs a net positive effect on tree regeneration in dry forests. These findings provide a conceptual framework for testing the impact of biotic interactions on seedling recruitment in other dry forests.Fil: Tálamo, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; ArgentinaFil: Barchuk, Alicia Haydee. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Garibaldi, Lucas Alejandro. Universidad Nacional de Rio Negro. Sede Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Trucco Aleman, Carlos Eduardo. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Cardozo, Silvana. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Mohr, Federico. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaSpringer2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/48656Tálamo, Andrés; Barchuk, Alicia Haydee; Garibaldi, Lucas Alejandro; Trucco Aleman, Carlos Eduardo; Cardozo, Silvana; et al.; Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina); Springer; Oecologia; 178; 3; 7-2015; 847-8540029-85491432-1939CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00442-015-3269-7info:eu-repo/semantics/altIdentifier/doi/10.1007/s00442-015-3269-7info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:36:17Zoai:ri.conicet.gov.ar:11336/48656instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:36:17.631CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
title Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
spellingShingle Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
Tálamo, Andrés
Facilitation
Herbivory
Livestock
Nurse Plants
Spatial Association
title_short Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
title_full Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
title_fullStr Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
title_full_unstemmed Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
title_sort Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina)
dc.creator.none.fl_str_mv Tálamo, Andrés
Barchuk, Alicia Haydee
Garibaldi, Lucas Alejandro
Trucco Aleman, Carlos Eduardo
Cardozo, Silvana
Mohr, Federico
author Tálamo, Andrés
author_facet Tálamo, Andrés
Barchuk, Alicia Haydee
Garibaldi, Lucas Alejandro
Trucco Aleman, Carlos Eduardo
Cardozo, Silvana
Mohr, Federico
author_role author
author2 Barchuk, Alicia Haydee
Garibaldi, Lucas Alejandro
Trucco Aleman, Carlos Eduardo
Cardozo, Silvana
Mohr, Federico
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Facilitation
Herbivory
Livestock
Nurse Plants
Spatial Association
topic Facilitation
Herbivory
Livestock
Nurse Plants
Spatial Association
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Successful persistence of dry forests depends on tree regeneration, which depends on a balance of complex biotic interactions. In particular, the relative importance and interactive effects of shrubs and herbivores on tree regeneration are unclear. In a manipulative study, we investigated if thornless shrubs have a direct net effect, an indirect positive effect mediated by livestock, and/or an indirect negative effect mediated by small vertebrates on tree regeneration of two key species of Chaco forest (Argentina). In a spatial association study, we also explored the existence of net positive interactions from thorny and thornless shrubs. The number of Schinopsis lorentzii seedlings was highest under artificial shade with native herbivores and livestock excluded. Even excluding livestock, no seedlings were found with natural conditions (native herbivores present with natural shade or direct sunlight) at the end of the experiment. Surprisingly, seedling recruitment was not enhanced under thornless shrubs, because there was a complementary positive effect of shade and interference. Moreover, thornless shrubs had neither positive nor negative effects on regeneration of S. lorentzii. Regeneration of Aspidosperma quebracho-blanco was minimal in all treatments. In agreement with the experiment, spatial distributions of saplings of both tree species were independent of thornless shrubs, but positively associated with thorny shrubs. Our results suggest that in general thornless shrubs may have a negligible effect and thorny shrubs a net positive effect on tree regeneration in dry forests. These findings provide a conceptual framework for testing the impact of biotic interactions on seedling recruitment in other dry forests.
Fil: Tálamo, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina
Fil: Barchuk, Alicia Haydee. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional de Rio Negro. Sede Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Trucco Aleman, Carlos Eduardo. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Cardozo, Silvana. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Mohr, Federico. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
description Successful persistence of dry forests depends on tree regeneration, which depends on a balance of complex biotic interactions. In particular, the relative importance and interactive effects of shrubs and herbivores on tree regeneration are unclear. In a manipulative study, we investigated if thornless shrubs have a direct net effect, an indirect positive effect mediated by livestock, and/or an indirect negative effect mediated by small vertebrates on tree regeneration of two key species of Chaco forest (Argentina). In a spatial association study, we also explored the existence of net positive interactions from thorny and thornless shrubs. The number of Schinopsis lorentzii seedlings was highest under artificial shade with native herbivores and livestock excluded. Even excluding livestock, no seedlings were found with natural conditions (native herbivores present with natural shade or direct sunlight) at the end of the experiment. Surprisingly, seedling recruitment was not enhanced under thornless shrubs, because there was a complementary positive effect of shade and interference. Moreover, thornless shrubs had neither positive nor negative effects on regeneration of S. lorentzii. Regeneration of Aspidosperma quebracho-blanco was minimal in all treatments. In agreement with the experiment, spatial distributions of saplings of both tree species were independent of thornless shrubs, but positively associated with thorny shrubs. Our results suggest that in general thornless shrubs may have a negligible effect and thorny shrubs a net positive effect on tree regeneration in dry forests. These findings provide a conceptual framework for testing the impact of biotic interactions on seedling recruitment in other dry forests.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/48656
Tálamo, Andrés; Barchuk, Alicia Haydee; Garibaldi, Lucas Alejandro; Trucco Aleman, Carlos Eduardo; Cardozo, Silvana; et al.; Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina); Springer; Oecologia; 178; 3; 7-2015; 847-854
0029-8549
1432-1939
CONICET Digital
CONICET
url http://hdl.handle.net/11336/48656
identifier_str_mv Tálamo, Andrés; Barchuk, Alicia Haydee; Garibaldi, Lucas Alejandro; Trucco Aleman, Carlos Eduardo; Cardozo, Silvana; et al.; Disentangling the effects of shrubs and herbivores on tree regeneration in a dry Chaco forest (Argentina); Springer; Oecologia; 178; 3; 7-2015; 847-854
0029-8549
1432-1939
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00442-015-3269-7
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00442-015-3269-7
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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