Functional group dominance and identity effects influence the magnitude of grassland invasion

Autores
Longo, Grisel; Seidler, Tristram G.; Garibaldi, Lucas Alejandro; Tognetti, Pedro M.; Chaneton, Enrique J.
Año de publicación
2013
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Longo, Grisel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
Fil: Seidler, Tristram G. Harvard Forest; USA.
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional de Río Negro. Sede Andina; Argentina.
Fil: Tognetti, Pedro M. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
Fil: Chaneton, Enrique J. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
Fil: Garibaldi, Lucas Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Tognetti, Pedro M. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina.
Variation in functional community composition is expected to influence the extent of exotic species invasions. Yet, whether resident functional groups control invasion through their relative biomass (mass ratio hypothesis) or by traits other than biomass (identity hypothesis) remains poorly understood. We performed a 6 year experiment to determine the effects of removing different functional groups on exotic species biomass in a Flooding Pampa grassland, Argentina. Functional groups were defined by life form (grasses or forbs), phenology (winter or summer) and origin (native or exotic). Removal of each functional group was compared against the removal of an equivalent amount of random biomass. Exotic group responses were monitored over 4 years of continuous removals, and after 2 years of recovery without manipulations. Removal of dominant native summer grasses caused the greatest impact on exotic species and overall community composition. Native summer grass removal significantly increased exotic grass (120%) and forb (730%) biomass beyond the level (46% and 180%, respectively) expected from deleting a similar amount of biomass at random. Exotic annual grasses showed only a transient increase, whereas exotic forb invasion persisted even after 2 years without removals. Removing subordinate, native or exotic winter grasses, and rare native forbs significantly promoted exotic forbs, but to the same level (300%) as random biomass removals. Total grass removal increased exotic forbs to half the extent expected from adding the effects of single grass group removals. Dispersal limitation and harsh abiotic conditions may constrain exotic forb spread into such heavily grass depleted patches. Synthesis. The impact of losing a functional group on the magnitude and persistence of invasion reflected its relative contribution to community biomass. Identity attributes other than biomass (e.g. phenological niche) further enhanced the biotic control that dominant native grasses exerted on established exotic species. Our findings highlight the community legacies of past disturbances to dominant functional groups.
Materia
Biodiversity
Biotic Resistance
Invasion Ecology
Mass Ratio Hypothesis
Phenological Niches
Rank Abundance
Removal Experiment
Subadditive Effect
Nivel de accesibilidad
acceso restringido
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/3459

id RIDUNRN_42bae9f326b1e7467b9fc3dd37ba59d7
oai_identifier_str oai:rid.unrn.edu.ar:20.500.12049/3459
network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling Functional group dominance and identity effects influence the magnitude of grassland invasionLongo, GriselSeidler, Tristram G.Garibaldi, Lucas AlejandroTognetti, Pedro M.Chaneton, Enrique J.BiodiversityBiotic ResistanceInvasion EcologyMass Ratio HypothesisPhenological NichesRank AbundanceRemoval ExperimentSubadditive EffectFil: Longo, Grisel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.Fil: Seidler, Tristram G. Harvard Forest; USA.Fil: Garibaldi, Lucas Alejandro. Universidad Nacional de Río Negro. Sede Andina; Argentina.Fil: Tognetti, Pedro M. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.Fil: Chaneton, Enrique J. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.Fil: Garibaldi, Lucas Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Tognetti, Pedro M. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina.Variation in functional community composition is expected to influence the extent of exotic species invasions. Yet, whether resident functional groups control invasion through their relative biomass (mass ratio hypothesis) or by traits other than biomass (identity hypothesis) remains poorly understood. We performed a 6 year experiment to determine the effects of removing different functional groups on exotic species biomass in a Flooding Pampa grassland, Argentina. Functional groups were defined by life form (grasses or forbs), phenology (winter or summer) and origin (native or exotic). Removal of each functional group was compared against the removal of an equivalent amount of random biomass. Exotic group responses were monitored over 4 years of continuous removals, and after 2 years of recovery without manipulations. Removal of dominant native summer grasses caused the greatest impact on exotic species and overall community composition. Native summer grass removal significantly increased exotic grass (120%) and forb (730%) biomass beyond the level (46% and 180%, respectively) expected from deleting a similar amount of biomass at random. Exotic annual grasses showed only a transient increase, whereas exotic forb invasion persisted even after 2 years without removals. Removing subordinate, native or exotic winter grasses, and rare native forbs significantly promoted exotic forbs, but to the same level (300%) as random biomass removals. Total grass removal increased exotic forbs to half the extent expected from adding the effects of single grass group removals. Dispersal limitation and harsh abiotic conditions may constrain exotic forb spread into such heavily grass depleted patches. Synthesis. The impact of losing a functional group on the magnitude and persistence of invasion reflected its relative contribution to community biomass. Identity attributes other than biomass (e.g. phenological niche) further enhanced the biotic control that dominant native grasses exerted on established exotic species. Our findings highlight the community legacies of past disturbances to dominant functional groups.Wiley Online Library2013-06-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfLongo, Maria G., Seidler, Tristram G., Garibaldi, Lucas A., Tognetti, Pedro M. y Chaneton, Enrique J. (2013). Functional group dominance and identity effects influence the magnitude of grassland invasion. Wiley; Journal of Ecology; 101 (5); 1114-11240022-0477http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12128/abstracthttp://hdl.handle.net/11336/4258https://rid.unrn.edu.ar/jspui/handle/20.500.12049/3459http://dx.doi.org/10.1111/1365-2745.12128spa101Journal of Ecologyinfo:eu-repo/semantics/restrictedAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:06Zoai:rid.unrn.edu.ar:20.500.12049/3459instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:06.922RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv Functional group dominance and identity effects influence the magnitude of grassland invasion
title Functional group dominance and identity effects influence the magnitude of grassland invasion
spellingShingle Functional group dominance and identity effects influence the magnitude of grassland invasion
Longo, Grisel
Biodiversity
Biotic Resistance
Invasion Ecology
Mass Ratio Hypothesis
Phenological Niches
Rank Abundance
Removal Experiment
Subadditive Effect
title_short Functional group dominance and identity effects influence the magnitude of grassland invasion
title_full Functional group dominance and identity effects influence the magnitude of grassland invasion
title_fullStr Functional group dominance and identity effects influence the magnitude of grassland invasion
title_full_unstemmed Functional group dominance and identity effects influence the magnitude of grassland invasion
title_sort Functional group dominance and identity effects influence the magnitude of grassland invasion
dc.creator.none.fl_str_mv Longo, Grisel
Seidler, Tristram G.
Garibaldi, Lucas Alejandro
Tognetti, Pedro M.
Chaneton, Enrique J.
author Longo, Grisel
author_facet Longo, Grisel
Seidler, Tristram G.
Garibaldi, Lucas Alejandro
Tognetti, Pedro M.
Chaneton, Enrique J.
author_role author
author2 Seidler, Tristram G.
Garibaldi, Lucas Alejandro
Tognetti, Pedro M.
Chaneton, Enrique J.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Biodiversity
Biotic Resistance
Invasion Ecology
Mass Ratio Hypothesis
Phenological Niches
Rank Abundance
Removal Experiment
Subadditive Effect
topic Biodiversity
Biotic Resistance
Invasion Ecology
Mass Ratio Hypothesis
Phenological Niches
Rank Abundance
Removal Experiment
Subadditive Effect
dc.description.none.fl_txt_mv Fil: Longo, Grisel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
Fil: Seidler, Tristram G. Harvard Forest; USA.
Fil: Garibaldi, Lucas Alejandro. Universidad Nacional de Río Negro. Sede Andina; Argentina.
Fil: Tognetti, Pedro M. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
Fil: Chaneton, Enrique J. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
Fil: Garibaldi, Lucas Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
Fil: Tognetti, Pedro M. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Métodos Cuantitativos y Sistemas de Información; Argentina.
Variation in functional community composition is expected to influence the extent of exotic species invasions. Yet, whether resident functional groups control invasion through their relative biomass (mass ratio hypothesis) or by traits other than biomass (identity hypothesis) remains poorly understood. We performed a 6 year experiment to determine the effects of removing different functional groups on exotic species biomass in a Flooding Pampa grassland, Argentina. Functional groups were defined by life form (grasses or forbs), phenology (winter or summer) and origin (native or exotic). Removal of each functional group was compared against the removal of an equivalent amount of random biomass. Exotic group responses were monitored over 4 years of continuous removals, and after 2 years of recovery without manipulations. Removal of dominant native summer grasses caused the greatest impact on exotic species and overall community composition. Native summer grass removal significantly increased exotic grass (120%) and forb (730%) biomass beyond the level (46% and 180%, respectively) expected from deleting a similar amount of biomass at random. Exotic annual grasses showed only a transient increase, whereas exotic forb invasion persisted even after 2 years without removals. Removing subordinate, native or exotic winter grasses, and rare native forbs significantly promoted exotic forbs, but to the same level (300%) as random biomass removals. Total grass removal increased exotic forbs to half the extent expected from adding the effects of single grass group removals. Dispersal limitation and harsh abiotic conditions may constrain exotic forb spread into such heavily grass depleted patches. Synthesis. The impact of losing a functional group on the magnitude and persistence of invasion reflected its relative contribution to community biomass. Identity attributes other than biomass (e.g. phenological niche) further enhanced the biotic control that dominant native grasses exerted on established exotic species. Our findings highlight the community legacies of past disturbances to dominant functional groups.
description Fil: Longo, Grisel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas vinculadas a la Agricultura (IFEVA)-CONICET; Argentina.
publishDate 2013
dc.date.none.fl_str_mv 2013-06-13
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 Longo, Maria G., Seidler, Tristram G., Garibaldi, Lucas A., Tognetti, Pedro M. y Chaneton, Enrique J. (2013). Functional group dominance and identity effects influence the magnitude of grassland invasion. Wiley; Journal of Ecology; 101 (5); 1114-1124
0022-0477
http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12128/abstract
http://hdl.handle.net/11336/4258
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/3459
http://dx.doi.org/10.1111/1365-2745.12128
identifier_str_mv Longo, Maria G., Seidler, Tristram G., Garibaldi, Lucas A., Tognetti, Pedro M. y Chaneton, Enrique J. (2013). Functional group dominance and identity effects influence the magnitude of grassland invasion. Wiley; Journal of Ecology; 101 (5); 1114-1124
0022-0477
url http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12128/abstract
http://hdl.handle.net/11336/4258
https://rid.unrn.edu.ar/jspui/handle/20.500.12049/3459
http://dx.doi.org/10.1111/1365-2745.12128
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv 101
Journal of Ecology
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley Online Library
publisher.none.fl_str_mv Wiley Online Library
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
_version_ 1844621611036049408
score 12.559606