Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach

Autores
Tálamo, Andrés; Barchuk, Alicia; Cardozo, Silvana; Trucco, Carlos; Maras, Gustavo; Trigo, Carolina Beatriz
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In arid environments, direct facilitation (microhabitat amelioration) and indirect facilitation (‘associational resistance’ via protection from herbivory) among plants of different species may act simultaneously. Little is known about their relative effects. One way to disentangle the effects is by evaluating spatial associations. We examined the relative importance of these two mechanisms of facilitation in the semiarid Chaco vegetation of north-central Argentina, through an eight-way observational study in which we quantified the degree of spatial association between saplings of each of two key tree species, Schinopsis lorentzii (Anacardiaceae) and Aspidosperma quebracho-blanco (Apocynaceae), with shrub neighbours either possessing spines or without spines and in both an ungrazed site and a site with a long history of cattle grazing. We analysed data across 400 subparcels at each site with spatial analysis by distance indices. Saplings of both tree species showed positive spatial associations with spiny shrubs in the grazed site but not in the ungrazed site, and never with non-spiny shrubs. This result suggests that spiny shrubs may indeed provide associational resistance for saplings of key tree species in grazed habitats in these dry subtropical forests, that is, that indirect facilitation may predominate over direct facilitation. If confirmed by experimental studies, this result can have implications for the silvopastoral management of rapidly expanding ranches in the semiarid Chaco, where current practice includes the near elimination of native shrubs.
Fil: Tálamo, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Bio y Geociencias del Noroeste Argentino; Argentina
Fil: Barchuk, Alicia. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina
Fil: Cardozo, Silvana. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Trucco, Carlos. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Maras, Gustavo. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Trigo, Carolina Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Bio y Geociencias del Noroeste Argentino; Argentina
Materia
Associational Resistance
Chaco
Facilitation
Grazing
Spiny Shrubs
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/6270
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approachTálamo, AndrésBarchuk, AliciaCardozo, SilvanaTrucco, CarlosMaras, GustavoTrigo, Carolina BeatrizAssociational ResistanceChacoFacilitationGrazingSpiny Shrubshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In arid environments, direct facilitation (microhabitat amelioration) and indirect facilitation (‘associational resistance’ via protection from herbivory) among plants of different species may act simultaneously. Little is known about their relative effects. One way to disentangle the effects is by evaluating spatial associations. We examined the relative importance of these two mechanisms of facilitation in the semiarid Chaco vegetation of north-central Argentina, through an eight-way observational study in which we quantified the degree of spatial association between saplings of each of two key tree species, Schinopsis lorentzii (Anacardiaceae) and Aspidosperma quebracho-blanco (Apocynaceae), with shrub neighbours either possessing spines or without spines and in both an ungrazed site and a site with a long history of cattle grazing. We analysed data across 400 subparcels at each site with spatial analysis by distance indices. Saplings of both tree species showed positive spatial associations with spiny shrubs in the grazed site but not in the ungrazed site, and never with non-spiny shrubs. This result suggests that spiny shrubs may indeed provide associational resistance for saplings of key tree species in grazed habitats in these dry subtropical forests, that is, that indirect facilitation may predominate over direct facilitation. If confirmed by experimental studies, this result can have implications for the silvopastoral management of rapidly expanding ranches in the semiarid Chaco, where current practice includes the near elimination of native shrubs.Fil: Tálamo, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Bio y Geociencias del Noroeste Argentino; ArgentinaFil: Barchuk, Alicia. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; ArgentinaFil: Cardozo, Silvana. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Trucco, Carlos. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Maras, Gustavo. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Trigo, Carolina Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Bio y Geociencias del Noroeste Argentino; ArgentinaWiley2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/6270Tálamo, Andrés; Barchuk, Alicia; Cardozo, Silvana; Trucco, Carlos; Maras, Gustavo; et al.; Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach; Wiley; Austral Ecology; 40; 5; 1-2015; 573-5801442-9985enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/aec.12224/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1111/aec.12224info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:04Zoai:ri.conicet.gov.ar:11336/6270instacron: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 10:21:04.75CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
title Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
spellingShingle Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
Tálamo, Andrés
Associational Resistance
Chaco
Facilitation
Grazing
Spiny Shrubs
title_short Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
title_full Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
title_fullStr Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
title_full_unstemmed Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
title_sort Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach
dc.creator.none.fl_str_mv Tálamo, Andrés
Barchuk, Alicia
Cardozo, Silvana
Trucco, Carlos
Maras, Gustavo
Trigo, Carolina Beatriz
author Tálamo, Andrés
author_facet Tálamo, Andrés
Barchuk, Alicia
Cardozo, Silvana
Trucco, Carlos
Maras, Gustavo
Trigo, Carolina Beatriz
author_role author
author2 Barchuk, Alicia
Cardozo, Silvana
Trucco, Carlos
Maras, Gustavo
Trigo, Carolina Beatriz
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Associational Resistance
Chaco
Facilitation
Grazing
Spiny Shrubs
topic Associational Resistance
Chaco
Facilitation
Grazing
Spiny Shrubs
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In arid environments, direct facilitation (microhabitat amelioration) and indirect facilitation (‘associational resistance’ via protection from herbivory) among plants of different species may act simultaneously. Little is known about their relative effects. One way to disentangle the effects is by evaluating spatial associations. We examined the relative importance of these two mechanisms of facilitation in the semiarid Chaco vegetation of north-central Argentina, through an eight-way observational study in which we quantified the degree of spatial association between saplings of each of two key tree species, Schinopsis lorentzii (Anacardiaceae) and Aspidosperma quebracho-blanco (Apocynaceae), with shrub neighbours either possessing spines or without spines and in both an ungrazed site and a site with a long history of cattle grazing. We analysed data across 400 subparcels at each site with spatial analysis by distance indices. Saplings of both tree species showed positive spatial associations with spiny shrubs in the grazed site but not in the ungrazed site, and never with non-spiny shrubs. This result suggests that spiny shrubs may indeed provide associational resistance for saplings of key tree species in grazed habitats in these dry subtropical forests, that is, that indirect facilitation may predominate over direct facilitation. If confirmed by experimental studies, this result can have implications for the silvopastoral management of rapidly expanding ranches in the semiarid Chaco, where current practice includes the near elimination of native shrubs.
Fil: Tálamo, Andrés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Bio y Geociencias del Noroeste Argentino; Argentina
Fil: Barchuk, Alicia. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina
Fil: Cardozo, Silvana. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Trucco, Carlos. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Maras, Gustavo. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina
Fil: Trigo, Carolina Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta. Instituto de Bio y Geociencias del Noroeste Argentino; Argentina
description In arid environments, direct facilitation (microhabitat amelioration) and indirect facilitation (‘associational resistance’ via protection from herbivory) among plants of different species may act simultaneously. Little is known about their relative effects. One way to disentangle the effects is by evaluating spatial associations. We examined the relative importance of these two mechanisms of facilitation in the semiarid Chaco vegetation of north-central Argentina, through an eight-way observational study in which we quantified the degree of spatial association between saplings of each of two key tree species, Schinopsis lorentzii (Anacardiaceae) and Aspidosperma quebracho-blanco (Apocynaceae), with shrub neighbours either possessing spines or without spines and in both an ungrazed site and a site with a long history of cattle grazing. We analysed data across 400 subparcels at each site with spatial analysis by distance indices. Saplings of both tree species showed positive spatial associations with spiny shrubs in the grazed site but not in the ungrazed site, and never with non-spiny shrubs. This result suggests that spiny shrubs may indeed provide associational resistance for saplings of key tree species in grazed habitats in these dry subtropical forests, that is, that indirect facilitation may predominate over direct facilitation. If confirmed by experimental studies, this result can have implications for the silvopastoral management of rapidly expanding ranches in the semiarid Chaco, where current practice includes the near elimination of native shrubs.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
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/11336/6270
Tálamo, Andrés; Barchuk, Alicia; Cardozo, Silvana; Trucco, Carlos; Maras, Gustavo; et al.; Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach; Wiley; Austral Ecology; 40; 5; 1-2015; 573-580
1442-9985
url http://hdl.handle.net/11336/6270
identifier_str_mv Tálamo, Andrés; Barchuk, Alicia; Cardozo, Silvana; Trucco, Carlos; Maras, Gustavo; et al.; Direct vs. indirect facilitation (herbivore-mediated) among woody plants in a semiarid Chaco forest: a spatial association approach; Wiley; Austral Ecology; 40; 5; 1-2015; 573-580
1442-9985
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/aec.12224/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1111/aec.12224
info:eu-repo/semantics/altIdentifier/doi/
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
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
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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