demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics

We conducted a 5 year demographic study in one population of the viviparous lizard Sceloporus grammicus Wiegmann, 1828 in central Mexico. The population was structured in three size classes (juveniles, small adults, and asymptotic adults) for which we estimated annual survival and fecundity rates. A...

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Detalhes bibliográficos
Autores: Mendez-de la Cruz, FR, Cuellar, O, Zuñiga-Vega, JJ
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:México
Recursos:Universidad Nacional Autónoma de México
Repositorio:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/949
Acesso em linha:http://hdl.handle.net/11154/949
Access Level:acceso abierto
Palavra-chave:Zoology
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spelling demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamicsMendez-de la Cruz, FRCuellar, OZuñiga-Vega, JJZoologyWe conducted a 5 year demographic study in one population of the viviparous lizard Sceloporus grammicus Wiegmann, 1828 in central Mexico. The population was structured in three size classes (juveniles, small adults, and asymptotic adults) for which we estimated annual survival and fecundity rates. A population projection matrix was constructed for each annual transition. All of them resulted in finite rates of population growth (lambda) that, although variable from year to year (from 0.808 to 1.065), were not significantly different than unity, indicating population stability. Elasticity analysis revealed that survival staying in the same size class was the demographic process that made the greatest contribution to lambda values in most years. Similarly, the stasis of large adults was the vital rate with the highest relative importance for population persistence. To incorporate the observed yearly variation in long-term population projections, we used a mean matrix, a stochastic simulation, and a resampling procedure. All these resulted in long-term population growth rates that were not significantly different than unity. Our results indicate overall demographic stability for the studied population of S. grammicus.2011-01-22T10:25:56Z2011-01-22T10:25:56Z2011-01-22T10:25:56Z2011-01-22T10:25:56Z2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0008-4301http://hdl.handle.net/11154/94970110.1139/Z08-12486(12):1397-1409reponame:Sistema de Información de la Facultad de Ciencias, UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenCanadian Journal of Zoology-Revue Canadienne De Zoologieinfo:eu-repo/semantics/openAccessoai:repositorio.fciencias.unam.mx:11154/9492025-09-17T19:19:56Z
dc.title.none.fl_str_mv demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
title demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
spellingShingle demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
Mendez-de la Cruz, FR
Zoology
title_short demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
title_full demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
title_fullStr demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
title_full_unstemmed demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
title_sort demography of the lizard sceloporus grammicus: exploring temporal variation in population dynamics
dc.creator.none.fl_str_mv Mendez-de la Cruz, FR
Cuellar, O
Zuñiga-Vega, JJ
author Mendez-de la Cruz, FR
author_facet Mendez-de la Cruz, FR
Cuellar, O
Zuñiga-Vega, JJ
author_role author
author2 Cuellar, O
Zuñiga-Vega, JJ
author2_role author
author
dc.subject.none.fl_str_mv Zoology
topic Zoology
description We conducted a 5 year demographic study in one population of the viviparous lizard Sceloporus grammicus Wiegmann, 1828 in central Mexico. The population was structured in three size classes (juveniles, small adults, and asymptotic adults) for which we estimated annual survival and fecundity rates. A population projection matrix was constructed for each annual transition. All of them resulted in finite rates of population growth (lambda) that, although variable from year to year (from 0.808 to 1.065), were not significantly different than unity, indicating population stability. Elasticity analysis revealed that survival staying in the same size class was the demographic process that made the greatest contribution to lambda values in most years. Similarly, the stasis of large adults was the vital rate with the highest relative importance for population persistence. To incorporate the observed yearly variation in long-term population projections, we used a mean matrix, a stochastic simulation, and a resampling procedure. All these resulted in long-term population growth rates that were not significantly different than unity. Our results indicate overall demographic stability for the studied population of S. grammicus.
publishDate 2008
dc.date.none.fl_str_mv 2008
2011-01-22T10:25:56Z
2011-01-22T10:25:56Z
2011-01-22T10:25:56Z
2011-01-22T10:25:56Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0008-4301
http://hdl.handle.net/11154/949
701
10.1139/Z08-124
identifier_str_mv 0008-4301
701
10.1139/Z08-124
url http://hdl.handle.net/11154/949
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv Canadian Journal of Zoology-Revue Canadienne De Zoologie
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv 86(12):1397-1409
reponame:Sistema de Información de la Facultad de Ciencias, UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Sistema de Información de la Facultad de Ciencias, UNAM
collection Sistema de Información de la Facultad de Ciencias, UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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