Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia

Aim: To understand how the activity budgets of ectotherms vary in mountain areas with high microclimatic and habitat heterogeneity, and how these factors together with habitat modulate the assemblage of ectotherm communities. Location: Tajzara Basin, Cordillera de Sama (3,600–4,300 m a.s.l.), Depart...

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Detalles Bibliográficos
Autores: Jiménez-Robles, Octavio, De la Riva, Ignacio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/226257
Acceso en línea:http://hdl.handle.net/10261/226257
Access Level:acceso abierto
Palabra clave:Activity budgets
Ectotherm
Föhn effect
Fundamental niche
Microclimate refugia
Mountain microclimates
Realized niche
Restriction time
Thermoregulation
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spelling Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern BoliviaJiménez-Robles, OctavioDe la Riva, IgnacioActivity budgetsEctothermFöhn effectFundamental nicheMicroclimate refugiaMountain microclimatesRealized nicheRestriction timeThermoregulationAim: To understand how the activity budgets of ectotherms vary in mountain areas with high microclimatic and habitat heterogeneity, and how these factors together with habitat modulate the assemblage of ectotherm communities. Location: Tajzara Basin, Cordillera de Sama (3,600–4,300 m a.s.l.), Department of Tarija, Bolivia. Taxon: Four lizard species of the genus Liolaemus. Methods: After parameterizing the thermal physiology of each species and recording operative temperature time series with dataloggers, we calculated activity budgets for every species across 30 sampling sites. By multimodel inference we evaluated how activity budgets varied across the topography. We also assessed how abundances of each species were predicted by activity budgets, restriction time, temperature deviation, habitat covers and exposure to cold microclimate. Results: Activity budgets were not only influenced by elevation but also by the exposure to cold air that comes through saddles from the eastern side of the mountain divide. Although thermal physiological parameters were relatively similar among the species, their abundances were conditioned to different extents by activity budgets, habitat and microclimates. Main conclusions: The abundance and distribution of each species across these lizard communities reflect the microclimatic heterogeneity originated by complex topography, which uncouples activity budgets from elevation. Only one species was confined to cold microclimate refugia with higher exposure to Föhn effect. Despite having a relatively similar thermal aspect of fundamental niches, lizards may differ in their realized niches by habitat selection. Habitat specialization could compromise the persistence of some species under global warming by reducing the dispersal possibilities to certain areas where population sustainability might be impaired in the long term. Understanding the heterogeneity of microclimates and habitats and the physiology of the species partially explains their distribution at local scale, and provides insights on how to best confront upcoming climate change effects.Secretaría de Estado de Investigación, Desarrollo e Innovación, Grant/Award Number: CGL2011-30393; Spanish Scientific Research Council, Grant/Award Number: JAEpre2011-033-1Wiley-BlackwellConsejo Superior de Investigaciones Científicas (España)Ministerio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120192021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/226257reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL2011-30393http://dx.doi.org/10.1111/jbi.13660Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2262572026-05-22T06:33:51Z
dc.title.none.fl_str_mv Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
title Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
spellingShingle Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
Jiménez-Robles, Octavio
Activity budgets
Ectotherm
Föhn effect
Fundamental niche
Microclimate refugia
Mountain microclimates
Realized niche
Restriction time
Thermoregulation
title_short Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
title_full Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
title_fullStr Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
title_full_unstemmed Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
title_sort Lizards in the mist: Thermal niches constrained by habitat and microclimates in the Andes of southern Bolivia
dc.creator.none.fl_str_mv Jiménez-Robles, Octavio
De la Riva, Ignacio
author Jiménez-Robles, Octavio
author_facet Jiménez-Robles, Octavio
De la Riva, Ignacio
author_role author
author2 De la Riva, Ignacio
author2_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Activity budgets
Ectotherm
Föhn effect
Fundamental niche
Microclimate refugia
Mountain microclimates
Realized niche
Restriction time
Thermoregulation
topic Activity budgets
Ectotherm
Föhn effect
Fundamental niche
Microclimate refugia
Mountain microclimates
Realized niche
Restriction time
Thermoregulation
description Aim: To understand how the activity budgets of ectotherms vary in mountain areas with high microclimatic and habitat heterogeneity, and how these factors together with habitat modulate the assemblage of ectotherm communities. Location: Tajzara Basin, Cordillera de Sama (3,600–4,300 m a.s.l.), Department of Tarija, Bolivia. Taxon: Four lizard species of the genus Liolaemus. Methods: After parameterizing the thermal physiology of each species and recording operative temperature time series with dataloggers, we calculated activity budgets for every species across 30 sampling sites. By multimodel inference we evaluated how activity budgets varied across the topography. We also assessed how abundances of each species were predicted by activity budgets, restriction time, temperature deviation, habitat covers and exposure to cold microclimate. Results: Activity budgets were not only influenced by elevation but also by the exposure to cold air that comes through saddles from the eastern side of the mountain divide. Although thermal physiological parameters were relatively similar among the species, their abundances were conditioned to different extents by activity budgets, habitat and microclimates. Main conclusions: The abundance and distribution of each species across these lizard communities reflect the microclimatic heterogeneity originated by complex topography, which uncouples activity budgets from elevation. Only one species was confined to cold microclimate refugia with higher exposure to Föhn effect. Despite having a relatively similar thermal aspect of fundamental niches, lizards may differ in their realized niches by habitat selection. Habitat specialization could compromise the persistence of some species under global warming by reducing the dispersal possibilities to certain areas where population sustainability might be impaired in the long term. Understanding the heterogeneity of microclimates and habitats and the physiology of the species partially explains their distribution at local scale, and provides insights on how to best confront upcoming climate change effects.
publishDate 2019
dc.date.none.fl_str_mv 2019
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/226257
url http://hdl.handle.net/10261/226257
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL2011-30393
http://dx.doi.org/10.1111/jbi.13660
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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