Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation

Autores
Crawford, Daniel J.; Ruiz, Eduardo; Stuessy, Tod F.; Tepe, Eric; Aqeveque, Pedro; Gonzalez, Fedelina; Jensen, Richard J.; Anderson, Gregory J.; Bernardello, Gabriel Luis Mario; Baeza, Carlos M.; Swenson, Ulf; Silva, Mario O.
Año de publicación
2001
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The level and apportionment of allozyme diversity were determined for 29 endemic (and 1 native) species from the Juan Fernández Islands, Chile. Mean diversities at the species level (Hes = 0.065) are low but comparable to those measured for other insular endemics in the Pacific. A high mean proportion (0.338) of species-level diversity resides among populations. Diversity statistics were compared for species in different ecological–life history trait categories and abundance classes. Species occurring in large populations and those present in scattered small populations have higher diversities than species occurring in one or two populations. Although not significant with the conservative statistical test employed, lower diversity was found in highly selfing species as compared to animal- or wind-pollinated species. The apportionment of genetic diversity within and among populations (GST values) is not significantly different for any of the species categories. Of particular interest is the lack of difference between animal- and wind-pollinated species because previous analyses of large data sets showed higher differentiation between populations of animal- than wind-pollinated species. Historical factors, both ecological and phylogenetic in nature, can influence the level and apportionment of diversity within insular endemics, and thus ecological correlates of diversity seen in many continental species may not apply to endemics. The results have several conservation implications. The preservation of large populations or several small populations is important for conserving diversity within species because when species are reduced to one or two populations, allozyme diversity is sharply reduced. High mean GST values for the species examined illustrate the need for conserving as many populations as possible, either in the wild or in the garden, to preserve maximal diversity within species. Effective conservation strategies require empirical knowledge of each species.
Fil: Crawford, Daniel J.. Kansas State University; Estados Unidos
Fil: Ruiz, Eduardo. Universidad de Concepción; Chile
Fil: Stuessy, Tod F.. Universidad de Viena; Austria
Fil: Tepe, Eric. Miami University; Estados Unidos
Fil: Aqeveque, Pedro. Universidad de Concepción; Chile
Fil: Gonzalez, Fedelina. Universidad de Concepción; Chile
Fil: Jensen, Richard J.. Saint Mary's College; Estados Unidos
Fil: Anderson, Gregory J.. University of Connecticut; Estados Unidos
Fil: Bernardello, Gabriel Luis Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Baeza, Carlos M.. Universidad de Concepción; Chile
Fil: Swenson, Ulf. Stockholms Universitet; Suecia
Fil: Silva, Mario O.. Universidad de Concepción; Chile
Materia
Juan Fernandez Archipielago
Genetic Variation
Allozymes
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:11336/38668
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/38668
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservationCrawford, Daniel J.Ruiz, EduardoStuessy, Tod F.Tepe, EricAqeveque, PedroGonzalez, FedelinaJensen, Richard J.Anderson, Gregory J.Bernardello, Gabriel Luis MarioBaeza, Carlos M.Swenson, UlfSilva, Mario O.Juan Fernandez ArchipielagoGenetic VariationAllozymeshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The level and apportionment of allozyme diversity were determined for 29 endemic (and 1 native) species from the Juan Fernández Islands, Chile. Mean diversities at the species level (Hes = 0.065) are low but comparable to those measured for other insular endemics in the Pacific. A high mean proportion (0.338) of species-level diversity resides among populations. Diversity statistics were compared for species in different ecological–life history trait categories and abundance classes. Species occurring in large populations and those present in scattered small populations have higher diversities than species occurring in one or two populations. Although not significant with the conservative statistical test employed, lower diversity was found in highly selfing species as compared to animal- or wind-pollinated species. The apportionment of genetic diversity within and among populations (GST values) is not significantly different for any of the species categories. Of particular interest is the lack of difference between animal- and wind-pollinated species because previous analyses of large data sets showed higher differentiation between populations of animal- than wind-pollinated species. Historical factors, both ecological and phylogenetic in nature, can influence the level and apportionment of diversity within insular endemics, and thus ecological correlates of diversity seen in many continental species may not apply to endemics. The results have several conservation implications. The preservation of large populations or several small populations is important for conserving diversity within species because when species are reduced to one or two populations, allozyme diversity is sharply reduced. High mean GST values for the species examined illustrate the need for conserving as many populations as possible, either in the wild or in the garden, to preserve maximal diversity within species. Effective conservation strategies require empirical knowledge of each species.Fil: Crawford, Daniel J.. Kansas State University; Estados UnidosFil: Ruiz, Eduardo. Universidad de Concepción; ChileFil: Stuessy, Tod F.. Universidad de Viena; AustriaFil: Tepe, Eric. Miami University; Estados UnidosFil: Aqeveque, Pedro. Universidad de Concepción; ChileFil: Gonzalez, Fedelina. Universidad de Concepción; ChileFil: Jensen, Richard J.. Saint Mary's College; Estados UnidosFil: Anderson, Gregory J.. University of Connecticut; Estados UnidosFil: Bernardello, Gabriel Luis Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Baeza, Carlos M.. Universidad de Concepción; ChileFil: Swenson, Ulf. Stockholms Universitet; SueciaFil: Silva, Mario O.. Universidad de Concepción; ChileBotanical Society of America2001-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/38668Crawford, Daniel J.; Ruiz, Eduardo; Stuessy, Tod F.; Tepe, Eric; Aqeveque, Pedro; et al.; Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation; Botanical Society of America; American Journal of Botany; 88; 12; 12-20010002-91221537-2197CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.2307/3558381/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.2307/3558381info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:39:12Zoai:ri.conicet.gov.ar:11336/38668instacron: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 09:39:13.077CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
title Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
spellingShingle Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
Crawford, Daniel J.
Juan Fernandez Archipielago
Genetic Variation
Allozymes
title_short Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
title_full Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
title_fullStr Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
title_full_unstemmed Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
title_sort Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation
dc.creator.none.fl_str_mv Crawford, Daniel J.
Ruiz, Eduardo
Stuessy, Tod F.
Tepe, Eric
Aqeveque, Pedro
Gonzalez, Fedelina
Jensen, Richard J.
Anderson, Gregory J.
Bernardello, Gabriel Luis Mario
Baeza, Carlos M.
Swenson, Ulf
Silva, Mario O.
author Crawford, Daniel J.
author_facet Crawford, Daniel J.
Ruiz, Eduardo
Stuessy, Tod F.
Tepe, Eric
Aqeveque, Pedro
Gonzalez, Fedelina
Jensen, Richard J.
Anderson, Gregory J.
Bernardello, Gabriel Luis Mario
Baeza, Carlos M.
Swenson, Ulf
Silva, Mario O.
author_role author
author2 Ruiz, Eduardo
Stuessy, Tod F.
Tepe, Eric
Aqeveque, Pedro
Gonzalez, Fedelina
Jensen, Richard J.
Anderson, Gregory J.
Bernardello, Gabriel Luis Mario
Baeza, Carlos M.
Swenson, Ulf
Silva, Mario O.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Juan Fernandez Archipielago
Genetic Variation
Allozymes
topic Juan Fernandez Archipielago
Genetic Variation
Allozymes
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The level and apportionment of allozyme diversity were determined for 29 endemic (and 1 native) species from the Juan Fernández Islands, Chile. Mean diversities at the species level (Hes = 0.065) are low but comparable to those measured for other insular endemics in the Pacific. A high mean proportion (0.338) of species-level diversity resides among populations. Diversity statistics were compared for species in different ecological–life history trait categories and abundance classes. Species occurring in large populations and those present in scattered small populations have higher diversities than species occurring in one or two populations. Although not significant with the conservative statistical test employed, lower diversity was found in highly selfing species as compared to animal- or wind-pollinated species. The apportionment of genetic diversity within and among populations (GST values) is not significantly different for any of the species categories. Of particular interest is the lack of difference between animal- and wind-pollinated species because previous analyses of large data sets showed higher differentiation between populations of animal- than wind-pollinated species. Historical factors, both ecological and phylogenetic in nature, can influence the level and apportionment of diversity within insular endemics, and thus ecological correlates of diversity seen in many continental species may not apply to endemics. The results have several conservation implications. The preservation of large populations or several small populations is important for conserving diversity within species because when species are reduced to one or two populations, allozyme diversity is sharply reduced. High mean GST values for the species examined illustrate the need for conserving as many populations as possible, either in the wild or in the garden, to preserve maximal diversity within species. Effective conservation strategies require empirical knowledge of each species.
Fil: Crawford, Daniel J.. Kansas State University; Estados Unidos
Fil: Ruiz, Eduardo. Universidad de Concepción; Chile
Fil: Stuessy, Tod F.. Universidad de Viena; Austria
Fil: Tepe, Eric. Miami University; Estados Unidos
Fil: Aqeveque, Pedro. Universidad de Concepción; Chile
Fil: Gonzalez, Fedelina. Universidad de Concepción; Chile
Fil: Jensen, Richard J.. Saint Mary's College; Estados Unidos
Fil: Anderson, Gregory J.. University of Connecticut; Estados Unidos
Fil: Bernardello, Gabriel Luis Mario. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Baeza, Carlos M.. Universidad de Concepción; Chile
Fil: Swenson, Ulf. Stockholms Universitet; Suecia
Fil: Silva, Mario O.. Universidad de Concepción; Chile
description The level and apportionment of allozyme diversity were determined for 29 endemic (and 1 native) species from the Juan Fernández Islands, Chile. Mean diversities at the species level (Hes = 0.065) are low but comparable to those measured for other insular endemics in the Pacific. A high mean proportion (0.338) of species-level diversity resides among populations. Diversity statistics were compared for species in different ecological–life history trait categories and abundance classes. Species occurring in large populations and those present in scattered small populations have higher diversities than species occurring in one or two populations. Although not significant with the conservative statistical test employed, lower diversity was found in highly selfing species as compared to animal- or wind-pollinated species. The apportionment of genetic diversity within and among populations (GST values) is not significantly different for any of the species categories. Of particular interest is the lack of difference between animal- and wind-pollinated species because previous analyses of large data sets showed higher differentiation between populations of animal- than wind-pollinated species. Historical factors, both ecological and phylogenetic in nature, can influence the level and apportionment of diversity within insular endemics, and thus ecological correlates of diversity seen in many continental species may not apply to endemics. The results have several conservation implications. The preservation of large populations or several small populations is important for conserving diversity within species because when species are reduced to one or two populations, allozyme diversity is sharply reduced. High mean GST values for the species examined illustrate the need for conserving as many populations as possible, either in the wild or in the garden, to preserve maximal diversity within species. Effective conservation strategies require empirical knowledge of each species.
publishDate 2001
dc.date.none.fl_str_mv 2001-12
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/11336/38668
Crawford, Daniel J.; Ruiz, Eduardo; Stuessy, Tod F.; Tepe, Eric; Aqeveque, Pedro; et al.; Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation; Botanical Society of America; American Journal of Botany; 88; 12; 12-2001
0002-9122
1537-2197
CONICET Digital
CONICET
url http://hdl.handle.net/11336/38668
identifier_str_mv Crawford, Daniel J.; Ruiz, Eduardo; Stuessy, Tod F.; Tepe, Eric; Aqeveque, Pedro; et al.; Allozyme diversity in endemic flowering plant species of the Juan Fernandez Archipelago, Chile: Ecological and historical factors with implications for conservation; Botanical Society of America; American Journal of Botany; 88; 12; 12-2001
0002-9122
1537-2197
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.2307/3558381/abstract
info:eu-repo/semantics/altIdentifier/doi/10.2307/3558381
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 Botanical Society of America
publisher.none.fl_str_mv Botanical Society of America
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 13.069144

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