Genetic recolonization of mangrove: Genetic diversity still increasing in the Mekong delta 30 years after Agent Orange
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , , |
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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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 |
dc.format.none.fl_str_mv |
application/pdf |
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 |
institution |
RCAAP |
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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1799133186859466752 |