Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange

Detalhes bibliográficos
Autor(a) principal: ARNAUD-HAOND, Sophie
Data de Publicação: 2009
Outros Autores: Duarte, C. M., Teixeira, Sara, Massa, S. I., Terrados, J., Tri, N. H., Hong, P. N., Serrão, Ester
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/4111
Resumo: The widespread use of Agent Orange (a mixture of phenoxyl herbicides) over Southern Vietnam by US Forces led to the decimation of mangrove forests in the Mekong Delta. Mangrove trees Avicennia alba were sampled across the Mekong Delta; their age was assessed using models based on internode growth and samples were genotyped for 6 microsatellite loci. The evolution of genetic diversity over time elapsed since local extinction was reconstructed and compared with the genetic diversity of an unaffected population from Thailand. The results show that genetic diversity of the A. alba population is still increasing in the Mekong Delta 3 decades after the end of the Vietnam War, but is reaching an asymptotic level that is comparable to the adjacent non-affected population of Thailand. This might be a sign of genetic recovery, but may also reveal a limitation, either of genetic enrichment due to current predominance of auto-recruitment or of demographic increase due to intraspecific competition in this pioneer species. In any case, these results, although encouraging, demonstrate that genetic recovery after complete or almost complete population depletion continues over a longer time-scale than apparent demographic recovery.
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spelling Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent OrangeRecolonization geneticsGenetic recoveryDemographic recoveryLocal extinctionMangroveDeforestationAgent OrangeThe widespread use of Agent Orange (a mixture of phenoxyl herbicides) over Southern Vietnam by US Forces led to the decimation of mangrove forests in the Mekong Delta. Mangrove trees Avicennia alba were sampled across the Mekong Delta; their age was assessed using models based on internode growth and samples were genotyped for 6 microsatellite loci. The evolution of genetic diversity over time elapsed since local extinction was reconstructed and compared with the genetic diversity of an unaffected population from Thailand. The results show that genetic diversity of the A. alba population is still increasing in the Mekong Delta 3 decades after the end of the Vietnam War, but is reaching an asymptotic level that is comparable to the adjacent non-affected population of Thailand. This might be a sign of genetic recovery, but may also reveal a limitation, either of genetic enrichment due to current predominance of auto-recruitment or of demographic increase due to intraspecific competition in this pioneer species. In any case, these results, although encouraging, demonstrate that genetic recovery after complete or almost complete population depletion continues over a longer time-scale than apparent demographic recovery.Inter ResearchSapientiaARNAUD-HAOND, SophieDuarte, C. M.Teixeira, SaraMassa, S. I.Terrados, J.Tri, N. H.Hong, P. N.Serrão, Ester2014-05-28T14:46:26Z2009-09-182014-05-21T13:21:49Z2009-09-18T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/4111engArnaud-Haond, S.; Duarte, C.M.; Teixeira, S.; Massa, S.I.; Terrados, J.; Tri, N.H.; Hong, P.N.; Serrão, E.A.Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange, Marine Ecology Progress Series, 390, Set. 2009, 129-135, 2009.0171-8630AUT: ESE00527;http://dx.doi.org/ 10.3354/meps08183info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:15:13Zoai:sapientia.ualg.pt:10400.1/4111Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:57:31.267550Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
title Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
spellingShingle Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
ARNAUD-HAOND, Sophie
Recolonization genetics
Genetic recovery
Demographic recovery
Local extinction
Mangrove
Deforestation
Agent Orange
title_short Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
title_full Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
title_fullStr Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
title_full_unstemmed Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
title_sort Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
author ARNAUD-HAOND, Sophie
author_facet ARNAUD-HAOND, Sophie
Duarte, C. M.
Teixeira, Sara
Massa, S. I.
Terrados, J.
Tri, N. H.
Hong, P. N.
Serrão, Ester
author_role author
author2 Duarte, C. M.
Teixeira, Sara
Massa, S. I.
Terrados, J.
Tri, N. H.
Hong, P. N.
Serrão, Ester
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv ARNAUD-HAOND, Sophie
Duarte, C. M.
Teixeira, Sara
Massa, S. I.
Terrados, J.
Tri, N. H.
Hong, P. N.
Serrão, Ester
dc.subject.por.fl_str_mv Recolonization genetics
Genetic recovery
Demographic recovery
Local extinction
Mangrove
Deforestation
Agent Orange
topic Recolonization genetics
Genetic recovery
Demographic recovery
Local extinction
Mangrove
Deforestation
Agent Orange
description The widespread use of Agent Orange (a mixture of phenoxyl herbicides) over Southern Vietnam by US Forces led to the decimation of mangrove forests in the Mekong Delta. Mangrove trees Avicennia alba were sampled across the Mekong Delta; their age was assessed using models based on internode growth and samples were genotyped for 6 microsatellite loci. The evolution of genetic diversity over time elapsed since local extinction was reconstructed and compared with the genetic diversity of an unaffected population from Thailand. The results show that genetic diversity of the A. alba population is still increasing in the Mekong Delta 3 decades after the end of the Vietnam War, but is reaching an asymptotic level that is comparable to the adjacent non-affected population of Thailand. This might be a sign of genetic recovery, but may also reveal a limitation, either of genetic enrichment due to current predominance of auto-recruitment or of demographic increase due to intraspecific competition in this pioneer species. In any case, these results, although encouraging, demonstrate that genetic recovery after complete or almost complete population depletion continues over a longer time-scale than apparent demographic recovery.
publishDate 2009
dc.date.none.fl_str_mv 2009-09-18
2009-09-18T00:00:00Z
2014-05-28T14:46:26Z
2014-05-21T13:21:49Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/4111
url http://hdl.handle.net/10400.1/4111
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Arnaud-Haond, S.; Duarte, C.M.; Teixeira, S.; Massa, S.I.; Terrados, J.; Tri, N.H.; Hong, P.N.; Serrão, E.A.Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange, Marine Ecology Progress Series, 390, Set. 2009, 129-135, 2009.
0171-8630
AUT: ESE00527;
http://dx.doi.org/ 10.3354/meps08183
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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