Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina

Autores
Milesi, Fernando Adrian; Guichon, Maria Laura; Monteverde, Martin; Piudo, Luciana; Sanguinetti, Javier
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A simultaneous masting of two abundant species in the temperate forests of North-West Argentinean Patagonia occurred in 2013 for the first time ever recorded: the semelparous bamboo grass Chusquea culeou (colihue), dominating the understory, flowered and set seed across 1100 km2 while pehuén (Araucaria araucana), an endemic conifer co-dominating the tree layer had the highest regionally synchronized mast event in the last 30 years. Strong trophic effects were expected as a consequence of this extraordinary amount of seed, such as rodent outbreaks (ratadas) that followed previous Chusquea spp. mast events and included Oligoryzomys longicaudatus, the main reservoir of the Andes virus causing the Hantavirus Pulmonar Syndrome. From March 2013 to May 2014, we sampled relative abundance and activity of seed-eaters and carnivores at four study sites with different proportions of both masting species. Surprisingly, total rodent capture rates never exceeded 14% in wild habitats and 8% in peridomestic areas showing low overall density in spite of some heavy O. longicaudatus males extending their reproductive activity into winter. Total abundance and relative proportion of granivorous birds peaked at the four sites in winter or spring, when they are usually scarce. Other surveyed organisms (native and exotic seed-eaters, ungulates and carnivores) showed moderate responses at most, probably through aggregation from surrounding areas rather than reproduction. Seed removal from experimental seed stations varied in time and space though never peaked. The clearest pattern of community responses, though much subtler than expected, occurred at the site where colihue was abundant and pehuén scarce. This is the first systematic study that reports such a simultaneous double masting and our surveys revealed no widespread community consequences. We propose that either contingent events, such as an unprecedented drought, or permanent environmental features or contextual characteristics may explain the lack of a rodent outbreak in this area.
Fil: Milesi, Fernando Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Guichon, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Monteverde, Martin. Centro de Ecología Aplicada del Neuquén; Argentina
Fil: Piudo, Luciana. Centro de Ecología Aplicada del Neuquén; Argentina
Fil: Sanguinetti, Javier. Centro de Ecología Aplicada del Neuquén; Argentina
Materia
Bamboo
Bottom-Up
Caña Colihue
Mast Event
Pehuén
Ratada
Rodent Outbreak
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:11336/58513
Acceder
id CONICETDig_5809377a1b079d39b69d87ae06791daa
oai_identifier_str oai:ri.conicet.gov.ar:11336/58513
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, ArgentinaMilesi, Fernando AdrianGuichon, Maria LauraMonteverde, MartinPiudo, LucianaSanguinetti, JavierBambooBottom-UpCaña ColihueMast EventPehuénRatadaRodent Outbreakhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1A simultaneous masting of two abundant species in the temperate forests of North-West Argentinean Patagonia occurred in 2013 for the first time ever recorded: the semelparous bamboo grass Chusquea culeou (colihue), dominating the understory, flowered and set seed across 1100 km2 while pehuén (Araucaria araucana), an endemic conifer co-dominating the tree layer had the highest regionally synchronized mast event in the last 30 years. Strong trophic effects were expected as a consequence of this extraordinary amount of seed, such as rodent outbreaks (ratadas) that followed previous Chusquea spp. mast events and included Oligoryzomys longicaudatus, the main reservoir of the Andes virus causing the Hantavirus Pulmonar Syndrome. From March 2013 to May 2014, we sampled relative abundance and activity of seed-eaters and carnivores at four study sites with different proportions of both masting species. Surprisingly, total rodent capture rates never exceeded 14% in wild habitats and 8% in peridomestic areas showing low overall density in spite of some heavy O. longicaudatus males extending their reproductive activity into winter. Total abundance and relative proportion of granivorous birds peaked at the four sites in winter or spring, when they are usually scarce. Other surveyed organisms (native and exotic seed-eaters, ungulates and carnivores) showed moderate responses at most, probably through aggregation from surrounding areas rather than reproduction. Seed removal from experimental seed stations varied in time and space though never peaked. The clearest pattern of community responses, though much subtler than expected, occurred at the site where colihue was abundant and pehuén scarce. This is the first systematic study that reports such a simultaneous double masting and our surveys revealed no widespread community consequences. We propose that either contingent events, such as an unprecedented drought, or permanent environmental features or contextual characteristics may explain the lack of a rodent outbreak in this area.Fil: Milesi, Fernando Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Guichon, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; ArgentinaFil: Monteverde, Martin. Centro de Ecología Aplicada del Neuquén; ArgentinaFil: Piudo, Luciana. Centro de Ecología Aplicada del Neuquén; ArgentinaFil: Sanguinetti, Javier. Centro de Ecología Aplicada del Neuquén; ArgentinaWiley Blackwell Publishing, Inc2017-09info: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/11336/58513Milesi, Fernando Adrian; Guichon, Maria Laura; Monteverde, Martin; Piudo, Luciana; Sanguinetti, Javier; Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina; Wiley Blackwell Publishing, Inc; Austral Ecology; 42; 6; 9-2017; 711-7221442-9985CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/aec.12489info:eu-repo/semantics/altIdentifier/doi/10.1111/aec.12489info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:02Zoai:ri.conicet.gov.ar:11336/58513instacron: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 09:47:02.41CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
title Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
spellingShingle Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
Milesi, Fernando Adrian
Bamboo
Bottom-Up
Caña Colihue
Mast Event
Pehuén
Ratada
Rodent Outbreak
title_short Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
title_full Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
title_fullStr Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
title_full_unstemmed Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
title_sort Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina
dc.creator.none.fl_str_mv Milesi, Fernando Adrian
Guichon, Maria Laura
Monteverde, Martin
Piudo, Luciana
Sanguinetti, Javier
author Milesi, Fernando Adrian
author_facet Milesi, Fernando Adrian
Guichon, Maria Laura
Monteverde, Martin
Piudo, Luciana
Sanguinetti, Javier
author_role author
author2 Guichon, Maria Laura
Monteverde, Martin
Piudo, Luciana
Sanguinetti, Javier
author2_role author
author
author
author
dc.subject.none.fl_str_mv Bamboo
Bottom-Up
Caña Colihue
Mast Event
Pehuén
Ratada
Rodent Outbreak
topic Bamboo
Bottom-Up
Caña Colihue
Mast Event
Pehuén
Ratada
Rodent Outbreak
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A simultaneous masting of two abundant species in the temperate forests of North-West Argentinean Patagonia occurred in 2013 for the first time ever recorded: the semelparous bamboo grass Chusquea culeou (colihue), dominating the understory, flowered and set seed across 1100 km2 while pehuén (Araucaria araucana), an endemic conifer co-dominating the tree layer had the highest regionally synchronized mast event in the last 30 years. Strong trophic effects were expected as a consequence of this extraordinary amount of seed, such as rodent outbreaks (ratadas) that followed previous Chusquea spp. mast events and included Oligoryzomys longicaudatus, the main reservoir of the Andes virus causing the Hantavirus Pulmonar Syndrome. From March 2013 to May 2014, we sampled relative abundance and activity of seed-eaters and carnivores at four study sites with different proportions of both masting species. Surprisingly, total rodent capture rates never exceeded 14% in wild habitats and 8% in peridomestic areas showing low overall density in spite of some heavy O. longicaudatus males extending their reproductive activity into winter. Total abundance and relative proportion of granivorous birds peaked at the four sites in winter or spring, when they are usually scarce. Other surveyed organisms (native and exotic seed-eaters, ungulates and carnivores) showed moderate responses at most, probably through aggregation from surrounding areas rather than reproduction. Seed removal from experimental seed stations varied in time and space though never peaked. The clearest pattern of community responses, though much subtler than expected, occurred at the site where colihue was abundant and pehuén scarce. This is the first systematic study that reports such a simultaneous double masting and our surveys revealed no widespread community consequences. We propose that either contingent events, such as an unprecedented drought, or permanent environmental features or contextual characteristics may explain the lack of a rodent outbreak in this area.
Fil: Milesi, Fernando Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Guichon, Maria Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Biodiversidad y Medioambiente. Universidad Nacional del Comahue. Centro Regional Universidad Bariloche. Instituto de Investigaciones en Biodiversidad y Medioambiente; Argentina
Fil: Monteverde, Martin. Centro de Ecología Aplicada del Neuquén; Argentina
Fil: Piudo, Luciana. Centro de Ecología Aplicada del Neuquén; Argentina
Fil: Sanguinetti, Javier. Centro de Ecología Aplicada del Neuquén; Argentina
description A simultaneous masting of two abundant species in the temperate forests of North-West Argentinean Patagonia occurred in 2013 for the first time ever recorded: the semelparous bamboo grass Chusquea culeou (colihue), dominating the understory, flowered and set seed across 1100 km2 while pehuén (Araucaria araucana), an endemic conifer co-dominating the tree layer had the highest regionally synchronized mast event in the last 30 years. Strong trophic effects were expected as a consequence of this extraordinary amount of seed, such as rodent outbreaks (ratadas) that followed previous Chusquea spp. mast events and included Oligoryzomys longicaudatus, the main reservoir of the Andes virus causing the Hantavirus Pulmonar Syndrome. From March 2013 to May 2014, we sampled relative abundance and activity of seed-eaters and carnivores at four study sites with different proportions of both masting species. Surprisingly, total rodent capture rates never exceeded 14% in wild habitats and 8% in peridomestic areas showing low overall density in spite of some heavy O. longicaudatus males extending their reproductive activity into winter. Total abundance and relative proportion of granivorous birds peaked at the four sites in winter or spring, when they are usually scarce. Other surveyed organisms (native and exotic seed-eaters, ungulates and carnivores) showed moderate responses at most, probably through aggregation from surrounding areas rather than reproduction. Seed removal from experimental seed stations varied in time and space though never peaked. The clearest pattern of community responses, though much subtler than expected, occurred at the site where colihue was abundant and pehuén scarce. This is the first systematic study that reports such a simultaneous double masting and our surveys revealed no widespread community consequences. We propose that either contingent events, such as an unprecedented drought, or permanent environmental features or contextual characteristics may explain the lack of a rodent outbreak in this area.
publishDate 2017
dc.date.none.fl_str_mv 2017-09
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/11336/58513
Milesi, Fernando Adrian; Guichon, Maria Laura; Monteverde, Martin; Piudo, Luciana; Sanguinetti, Javier; Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina; Wiley Blackwell Publishing, Inc; Austral Ecology; 42; 6; 9-2017; 711-722
1442-9985
CONICET Digital
CONICET
url http://hdl.handle.net/11336/58513
identifier_str_mv Milesi, Fernando Adrian; Guichon, Maria Laura; Monteverde, Martin; Piudo, Luciana; Sanguinetti, Javier; Ecological consequences of an unusual simultaneous masting of Araucaria araucana and Chusquea culeou in North-West Patagonia, Argentina; Wiley Blackwell Publishing, Inc; Austral Ecology; 42; 6; 9-2017; 711-722
1442-9985
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://onlinelibrary.wiley.com/doi/abs/10.1111/aec.12489
info:eu-repo/semantics/altIdentifier/doi/10.1111/aec.12489
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 Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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 13.070432

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