Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)

Autores
Zubillaga, María; Skewes, O.; Soto, N.; Rabinovich, Jorge Eduardo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analyzed the effects of population density and climatic variables on the rate of population growth in the guanaco (Lama guanicoe), a wild camelid species in South America. We used a time series of 36 years (1977-2012) of population sampling in Tierra del Fuego, Chile. Individuals were grouped in three age-classes: newborns, juveniles, and adults; for each year a female population transition matrix was constructed, and the population growth rate (Λ) was estimated for each year as the matrix highest positive eigenvalue. We applied a regression analysis with finite population growth rate (Λ) as dependent variable, and total guanaco population, sheep population, annual mean precipitation, and winter mean temperature as independent variables, with and without time lags. The effect of population size was statistically significant, but the effects of the sheep population and the climatic variables on guanaco population growth rate were not statistically significant.
Centro de Estudios Parasitológicos y de Vectores
Materia
Ciencias Naturales
Camelidae
Climatic variables
Density effects
Guanaco
Population regulation
Population growth rate
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/85147

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network_name_str SEDICI (UNLP)
spelling Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)Zubillaga, MaríaSkewes, O.Soto, N.Rabinovich, Jorge EduardoCiencias NaturalesCamelidaeClimatic variablesDensity effectsGuanacoPopulation regulationPopulation growth rateWe analyzed the effects of population density and climatic variables on the rate of population growth in the guanaco (Lama guanicoe), a wild camelid species in South America. We used a time series of 36 years (1977-2012) of population sampling in Tierra del Fuego, Chile. Individuals were grouped in three age-classes: newborns, juveniles, and adults; for each year a female population transition matrix was constructed, and the population growth rate (Λ) was estimated for each year as the matrix highest positive eigenvalue. We applied a regression analysis with finite population growth rate (Λ) as dependent variable, and total guanaco population, sheep population, annual mean precipitation, and winter mean temperature as independent variables, with and without time lags. The effect of population size was statistically significant, but the effects of the sheep population and the climatic variables on guanaco population growth rate were not statistically significant.Centro de Estudios Parasitológicos y de Vectores2014-09-18info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/85147enginfo:eu-repo/semantics/altIdentifier/issn/2046-1402info:eu-repo/semantics/altIdentifier/doi/10.12688/f1000research.2-210.v2info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:08:17Zoai:sedici.unlp.edu.ar:10915/85147Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:08:17.587SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
title Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
spellingShingle Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
Zubillaga, María
Ciencias Naturales
Camelidae
Climatic variables
Density effects
Guanaco
Population regulation
Population growth rate
title_short Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
title_full Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
title_fullStr Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
title_full_unstemmed Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
title_sort Density but not climate affects the population growth rate of guanacos (Lama guanicoe) (Artiodactyla, Camelidae)
dc.creator.none.fl_str_mv Zubillaga, María
Skewes, O.
Soto, N.
Rabinovich, Jorge Eduardo
author Zubillaga, María
author_facet Zubillaga, María
Skewes, O.
Soto, N.
Rabinovich, Jorge Eduardo
author_role author
author2 Skewes, O.
Soto, N.
Rabinovich, Jorge Eduardo
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Camelidae
Climatic variables
Density effects
Guanaco
Population regulation
Population growth rate
topic Ciencias Naturales
Camelidae
Climatic variables
Density effects
Guanaco
Population regulation
Population growth rate
dc.description.none.fl_txt_mv We analyzed the effects of population density and climatic variables on the rate of population growth in the guanaco (Lama guanicoe), a wild camelid species in South America. We used a time series of 36 years (1977-2012) of population sampling in Tierra del Fuego, Chile. Individuals were grouped in three age-classes: newborns, juveniles, and adults; for each year a female population transition matrix was constructed, and the population growth rate (Λ) was estimated for each year as the matrix highest positive eigenvalue. We applied a regression analysis with finite population growth rate (Λ) as dependent variable, and total guanaco population, sheep population, annual mean precipitation, and winter mean temperature as independent variables, with and without time lags. The effect of population size was statistically significant, but the effects of the sheep population and the climatic variables on guanaco population growth rate were not statistically significant.
Centro de Estudios Parasitológicos y de Vectores
description We analyzed the effects of population density and climatic variables on the rate of population growth in the guanaco (Lama guanicoe), a wild camelid species in South America. We used a time series of 36 years (1977-2012) of population sampling in Tierra del Fuego, Chile. Individuals were grouped in three age-classes: newborns, juveniles, and adults; for each year a female population transition matrix was constructed, and the population growth rate (Λ) was estimated for each year as the matrix highest positive eigenvalue. We applied a regression analysis with finite population growth rate (Λ) as dependent variable, and total guanaco population, sheep population, annual mean precipitation, and winter mean temperature as independent variables, with and without time lags. The effect of population size was statistically significant, but the effects of the sheep population and the climatic variables on guanaco population growth rate were not statistically significant.
publishDate 2014
dc.date.none.fl_str_mv 2014-09-18
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/85147
url http://sedici.unlp.edu.ar/handle/10915/85147
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2046-1402
info:eu-repo/semantics/altIdentifier/doi/10.12688/f1000research.2-210.v2
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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