Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile
- Autores
- Zubillaga, María; Skewes, Oscar; Soto, Nicolás; Rabinovich, Jorge Eduardo; Colchero, Fernando
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Understanding the mechanisms that drive population dynamics is fundamental for management of wild populations. The guanaco (Lama guanicoe) is one of two wild camelid species in South America. We evaluated the effects of density dependence and weather variables on population regulation based on a time series of 36 years of population sampling of guanacos in Tierra del Fuego, Chile. The population density varied between 2.7 and 30.7 guanaco/km2 , with an apparent monotonic growth during the first 25 years; however, in the last 10 years the population has shown large fluctuations, suggesting that it might have reached its carrying capacity. We used a Bayesian state-space framework and model selection to determine the effect of density and environmental variables on guanaco population dynamics. Our results show that the population is under density dependent regulation and that it is currently fluctuating around an average carrying capacity of 45,000 guanacos. We also found a significant positive effect of previous winter temperature while sheep density has a strong negative effect on the guanaco population growth. We conclude that there are significant density dependent processes and that climate as well as competition with domestic species have important effects determining the population size of guanacos, with important implications for management and conservation.
Fil: Zubillaga, María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Skewes, Oscar. Universidad de Concepción; Chile
Fil: Soto, Nicolás. Departamento de Protección de Recursos Naturales Servicio Agrícola Ganadero; Chile
Fil: Rabinovich, Jorge Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina
Fil: Colchero, Fernando. University Of Southern Denmark; Dinamarca - Materia
-
GUANACO
POPULATION REGULATION
WEATHER
DEMOGRAPHIC MODEL - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/10703
Ver los metadatos del registro completo
id |
CONICETDig_1273aba232d2d4b084f52226a01b519c |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/10703 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Bayesian inference on the effect of density dependence and weather on a guanaco population from ChileZubillaga, MaríaSkewes, OscarSoto, NicolásRabinovich, Jorge EduardoColchero, FernandoGUANACOPOPULATION REGULATIONWEATHERDEMOGRAPHIC MODELhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Understanding the mechanisms that drive population dynamics is fundamental for management of wild populations. The guanaco (Lama guanicoe) is one of two wild camelid species in South America. We evaluated the effects of density dependence and weather variables on population regulation based on a time series of 36 years of population sampling of guanacos in Tierra del Fuego, Chile. The population density varied between 2.7 and 30.7 guanaco/km2 , with an apparent monotonic growth during the first 25 years; however, in the last 10 years the population has shown large fluctuations, suggesting that it might have reached its carrying capacity. We used a Bayesian state-space framework and model selection to determine the effect of density and environmental variables on guanaco population dynamics. Our results show that the population is under density dependent regulation and that it is currently fluctuating around an average carrying capacity of 45,000 guanacos. We also found a significant positive effect of previous winter temperature while sheep density has a strong negative effect on the guanaco population growth. We conclude that there are significant density dependent processes and that climate as well as competition with domestic species have important effects determining the population size of guanacos, with important implications for management and conservation.Fil: Zubillaga, María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Skewes, Oscar. Universidad de Concepción; ChileFil: Soto, Nicolás. Departamento de Protección de Recursos Naturales Servicio Agrícola Ganadero; ChileFil: Rabinovich, Jorge Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; ArgentinaFil: Colchero, Fernando. University Of Southern Denmark; DinamarcaPublic Library Of Science2014-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10703Zubillaga, María; Skewes, Oscar; Soto, Nicolás; Rabinovich, Jorge Eduardo; Colchero, Fernando; Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile; Public Library Of Science; Plos One; 9; 12; 12-2014; 1-17; e1153071932-6203enginfo:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0115307info:eu-repo/semantics/altIdentifier/url/http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0115307info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4267833/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 Técnicas2025-09-29T09:37:44Zoai:ri.conicet.gov.ar:11336/10703instacron: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 09:37:44.442CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile |
title |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile |
spellingShingle |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile Zubillaga, María GUANACO POPULATION REGULATION WEATHER DEMOGRAPHIC MODEL |
title_short |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile |
title_full |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile |
title_fullStr |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile |
title_full_unstemmed |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile |
title_sort |
Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile |
dc.creator.none.fl_str_mv |
Zubillaga, María Skewes, Oscar Soto, Nicolás Rabinovich, Jorge Eduardo Colchero, Fernando |
author |
Zubillaga, María |
author_facet |
Zubillaga, María Skewes, Oscar Soto, Nicolás Rabinovich, Jorge Eduardo Colchero, Fernando |
author_role |
author |
author2 |
Skewes, Oscar Soto, Nicolás Rabinovich, Jorge Eduardo Colchero, Fernando |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
GUANACO POPULATION REGULATION WEATHER DEMOGRAPHIC MODEL |
topic |
GUANACO POPULATION REGULATION WEATHER DEMOGRAPHIC MODEL |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Understanding the mechanisms that drive population dynamics is fundamental for management of wild populations. The guanaco (Lama guanicoe) is one of two wild camelid species in South America. We evaluated the effects of density dependence and weather variables on population regulation based on a time series of 36 years of population sampling of guanacos in Tierra del Fuego, Chile. The population density varied between 2.7 and 30.7 guanaco/km2 , with an apparent monotonic growth during the first 25 years; however, in the last 10 years the population has shown large fluctuations, suggesting that it might have reached its carrying capacity. We used a Bayesian state-space framework and model selection to determine the effect of density and environmental variables on guanaco population dynamics. Our results show that the population is under density dependent regulation and that it is currently fluctuating around an average carrying capacity of 45,000 guanacos. We also found a significant positive effect of previous winter temperature while sheep density has a strong negative effect on the guanaco population growth. We conclude that there are significant density dependent processes and that climate as well as competition with domestic species have important effects determining the population size of guanacos, with important implications for management and conservation. Fil: Zubillaga, María. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Skewes, Oscar. Universidad de Concepción; Chile Fil: Soto, Nicolás. Departamento de Protección de Recursos Naturales Servicio Agrícola Ganadero; Chile Fil: Rabinovich, Jorge Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Estudios Parasitológicos y de Vectores (i); Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo; Argentina Fil: Colchero, Fernando. University Of Southern Denmark; Dinamarca |
description |
Understanding the mechanisms that drive population dynamics is fundamental for management of wild populations. The guanaco (Lama guanicoe) is one of two wild camelid species in South America. We evaluated the effects of density dependence and weather variables on population regulation based on a time series of 36 years of population sampling of guanacos in Tierra del Fuego, Chile. The population density varied between 2.7 and 30.7 guanaco/km2 , with an apparent monotonic growth during the first 25 years; however, in the last 10 years the population has shown large fluctuations, suggesting that it might have reached its carrying capacity. We used a Bayesian state-space framework and model selection to determine the effect of density and environmental variables on guanaco population dynamics. Our results show that the population is under density dependent regulation and that it is currently fluctuating around an average carrying capacity of 45,000 guanacos. We also found a significant positive effect of previous winter temperature while sheep density has a strong negative effect on the guanaco population growth. We conclude that there are significant density dependent processes and that climate as well as competition with domestic species have important effects determining the population size of guanacos, with important implications for management and conservation. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-12 |
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/11336/10703 Zubillaga, María; Skewes, Oscar; Soto, Nicolás; Rabinovich, Jorge Eduardo; Colchero, Fernando; Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile; Public Library Of Science; Plos One; 9; 12; 12-2014; 1-17; e115307 1932-6203 |
url |
http://hdl.handle.net/11336/10703 |
identifier_str_mv |
Zubillaga, María; Skewes, Oscar; Soto, Nicolás; Rabinovich, Jorge Eduardo; Colchero, Fernando; Bayesian inference on the effect of density dependence and weather on a guanaco population from Chile; Public Library Of Science; Plos One; 9; 12; 12-2014; 1-17; e115307 1932-6203 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0115307 info:eu-repo/semantics/altIdentifier/url/http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0115307 info:eu-repo/semantics/altIdentifier/url/https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4267833/ |
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 |
Public Library Of Science |
publisher.none.fl_str_mv |
Public Library Of Science |
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 |
_version_ |
1844613190056411136 |
score |
13.070432 |