Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall

Autores
Ghermandi, Luciana; Franzese, Jorgelina; Gonzalez, Sofia Laura; de Torres Curth, Mónica; Ruete, Alejandro
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In Mediterranean ecosystems, fire influences plant population dynamics and changes plant communitystructure by affecting germination and establishment of seeder shrubs. Fabiana imbricata is a long-lived seeder shrub with a broad distribution in South America. In Northwestern Patagonia grasslands there are many records of F. imbricata recruitment after fires.We hypothesized that recruitment is promoted by: 1)soil erosion that exposes deeply buried seeds; 2) direct fire effects such as heat that could break seed dormancy; 3) indirect fire effects (i.e. increase of light availability and elimination of allelopathic substances)and 4) water availability in spring. In field conditions, we tested the effects of shading and soildisturbance on F. imbricata recruitment and seed availability and distribution in the soil profile. Under controlled conditions, we investigated the influence of leaf leachate, light, heat and water on seed germination and seedling emergence. Seed germination was inhibited by leachate, and seedling emergence was inhibited by seed heated to 80 C and 120 for 5 min. F. imbricata seedlings only emerged in germination treatments that simulated wet and very wet spring conditions. Fire and postfire wind that favor seed exposure, combined with high precipitation early in the growing season, would be necessary for successful shrub recruitment. When F. imbricata shrubland colonizes the grassland, it strongly modifies local vegetation structure, reduces species richness and increases fuel loads. F. imbricata is a key species in the ecosystem specially related to fire regime. Information on the postfire regeneration of this species would provide valuable knowledge of the changes in biomass accumulation in a fire-prone Mediterranean ecosystem.
Fil: Ghermandi, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Franzese, Jorgelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Gonzalez, Sofia Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: de Torres Curth, Mónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Ruete, Alejandro. Swedish University of Agricultural Sciences. Swedish Species Information Centre; Suecia
Materia
Fire
Germination Requirement
Mediterranean Grassland
Patagonia
Seeder Shrub
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/6652
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/6652
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfallGhermandi, LucianaFranzese, JorgelinaGonzalez, Sofia Laurade Torres Curth, MónicaRuete, AlejandroFireGermination RequirementMediterranean GrasslandPatagoniaSeeder Shrubhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1In Mediterranean ecosystems, fire influences plant population dynamics and changes plant communitystructure by affecting germination and establishment of seeder shrubs. Fabiana imbricata is a long-lived seeder shrub with a broad distribution in South America. In Northwestern Patagonia grasslands there are many records of F. imbricata recruitment after fires.We hypothesized that recruitment is promoted by: 1)soil erosion that exposes deeply buried seeds; 2) direct fire effects such as heat that could break seed dormancy; 3) indirect fire effects (i.e. increase of light availability and elimination of allelopathic substances)and 4) water availability in spring. In field conditions, we tested the effects of shading and soildisturbance on F. imbricata recruitment and seed availability and distribution in the soil profile. Under controlled conditions, we investigated the influence of leaf leachate, light, heat and water on seed germination and seedling emergence. Seed germination was inhibited by leachate, and seedling emergence was inhibited by seed heated to 80 C and 120 for 5 min. F. imbricata seedlings only emerged in germination treatments that simulated wet and very wet spring conditions. Fire and postfire wind that favor seed exposure, combined with high precipitation early in the growing season, would be necessary for successful shrub recruitment. When F. imbricata shrubland colonizes the grassland, it strongly modifies local vegetation structure, reduces species richness and increases fuel loads. F. imbricata is a key species in the ecosystem specially related to fire regime. Information on the postfire regeneration of this species would provide valuable knowledge of the changes in biomass accumulation in a fire-prone Mediterranean ecosystem.Fil: Ghermandi, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaFil: Franzese, Jorgelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaFil: Gonzalez, Sofia Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaFil: de Torres Curth, Mónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; ArgentinaFil: Ruete, Alejandro. Swedish University of Agricultural Sciences. Swedish Species Information Centre; SueciaElsevier2013-06info: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/11336/6652Ghermandi, Luciana; Franzese, Jorgelina; Gonzalez, Sofia Laura; de Torres Curth, Mónica; Ruete, Alejandro; Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall; Elsevier; Journal of Arid Environments; 97; 6-2013; 9-130140-1963enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jaridenv.2013.05.005info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0140196313000943info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:07:54Zoai:ri.conicet.gov.ar:11336/6652instacron: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:34982025-10-22 11:07:54.396CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
title Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
spellingShingle Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
Ghermandi, Luciana
Fire
Germination Requirement
Mediterranean Grassland
Patagonia
Seeder Shrub
title_short Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
title_full Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
title_fullStr Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
title_full_unstemmed Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
title_sort Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall
dc.creator.none.fl_str_mv Ghermandi, Luciana
Franzese, Jorgelina
Gonzalez, Sofia Laura
de Torres Curth, Mónica
Ruete, Alejandro
author Ghermandi, Luciana
author_facet Ghermandi, Luciana
Franzese, Jorgelina
Gonzalez, Sofia Laura
de Torres Curth, Mónica
Ruete, Alejandro
author_role author
author2 Franzese, Jorgelina
Gonzalez, Sofia Laura
de Torres Curth, Mónica
Ruete, Alejandro
author2_role author
author
author
author
dc.subject.none.fl_str_mv Fire
Germination Requirement
Mediterranean Grassland
Patagonia
Seeder Shrub
topic Fire
Germination Requirement
Mediterranean Grassland
Patagonia
Seeder Shrub
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 Mediterranean ecosystems, fire influences plant population dynamics and changes plant communitystructure by affecting germination and establishment of seeder shrubs. Fabiana imbricata is a long-lived seeder shrub with a broad distribution in South America. In Northwestern Patagonia grasslands there are many records of F. imbricata recruitment after fires.We hypothesized that recruitment is promoted by: 1)soil erosion that exposes deeply buried seeds; 2) direct fire effects such as heat that could break seed dormancy; 3) indirect fire effects (i.e. increase of light availability and elimination of allelopathic substances)and 4) water availability in spring. In field conditions, we tested the effects of shading and soildisturbance on F. imbricata recruitment and seed availability and distribution in the soil profile. Under controlled conditions, we investigated the influence of leaf leachate, light, heat and water on seed germination and seedling emergence. Seed germination was inhibited by leachate, and seedling emergence was inhibited by seed heated to 80 C and 120 for 5 min. F. imbricata seedlings only emerged in germination treatments that simulated wet and very wet spring conditions. Fire and postfire wind that favor seed exposure, combined with high precipitation early in the growing season, would be necessary for successful shrub recruitment. When F. imbricata shrubland colonizes the grassland, it strongly modifies local vegetation structure, reduces species richness and increases fuel loads. F. imbricata is a key species in the ecosystem specially related to fire regime. Information on the postfire regeneration of this species would provide valuable knowledge of the changes in biomass accumulation in a fire-prone Mediterranean ecosystem.
Fil: Ghermandi, Luciana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Franzese, Jorgelina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Gonzalez, Sofia Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: de Torres Curth, Mónica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina
Fil: Ruete, Alejandro. Swedish University of Agricultural Sciences. Swedish Species Information Centre; Suecia
description In Mediterranean ecosystems, fire influences plant population dynamics and changes plant communitystructure by affecting germination and establishment of seeder shrubs. Fabiana imbricata is a long-lived seeder shrub with a broad distribution in South America. In Northwestern Patagonia grasslands there are many records of F. imbricata recruitment after fires.We hypothesized that recruitment is promoted by: 1)soil erosion that exposes deeply buried seeds; 2) direct fire effects such as heat that could break seed dormancy; 3) indirect fire effects (i.e. increase of light availability and elimination of allelopathic substances)and 4) water availability in spring. In field conditions, we tested the effects of shading and soildisturbance on F. imbricata recruitment and seed availability and distribution in the soil profile. Under controlled conditions, we investigated the influence of leaf leachate, light, heat and water on seed germination and seedling emergence. Seed germination was inhibited by leachate, and seedling emergence was inhibited by seed heated to 80 C and 120 for 5 min. F. imbricata seedlings only emerged in germination treatments that simulated wet and very wet spring conditions. Fire and postfire wind that favor seed exposure, combined with high precipitation early in the growing season, would be necessary for successful shrub recruitment. When F. imbricata shrubland colonizes the grassland, it strongly modifies local vegetation structure, reduces species richness and increases fuel loads. F. imbricata is a key species in the ecosystem specially related to fire regime. Information on the postfire regeneration of this species would provide valuable knowledge of the changes in biomass accumulation in a fire-prone Mediterranean ecosystem.
publishDate 2013
dc.date.none.fl_str_mv 2013-06
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/11336/6652
Ghermandi, Luciana; Franzese, Jorgelina; Gonzalez, Sofia Laura; de Torres Curth, Mónica; Ruete, Alejandro; Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall; Elsevier; Journal of Arid Environments; 97; 6-2013; 9-13
0140-1963
url http://hdl.handle.net/11336/6652
identifier_str_mv Ghermandi, Luciana; Franzese, Jorgelina; Gonzalez, Sofia Laura; de Torres Curth, Mónica; Ruete, Alejandro; Disentangling Fabiana imbricata (Solanaceae) regeneration: the importance of disturbance and rainfall; Elsevier; Journal of Arid Environments; 97; 6-2013; 9-13
0140-1963
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jaridenv.2013.05.005
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0140196313000943
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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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score 12.982451

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