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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Florestas. |
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Data corrente: |
19/02/2008 |
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Data da última atualização: |
25/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LACERDA, A. E. B. de; KANASHIRO, M.; SEBBENN, A. M. |
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Afiliação: |
André Eduardo Biscaia de Lacerda, Embrapa Florestas; Milton Kanashiro, Embrapa Amazônia Oriental; Alexandre Magno Sebbenn, Instituto Florestal de São Paulo. |
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Título: |
Effects of reduced impact logging on genetic diversity and spatial genetic structure of a Hymenaea courbaril population in the Brazilian Amazon Forest |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
Forest Ecology and Management, Amsterdam, v. 255, p. 1034-1043, 2008. |
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Idioma: |
Inglês |
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Conteúdo: |
Levels of genetic diversity, inbreeding, and spatial genetic structure were investigated at different ontogenic stages for a population of Hymanaea courbaril, before and after Reduced Impact Logging (RIL) was applied, in a 546-ha plot in the Tapajo´s National Forest, in the Brazilian Amazon. The multilocus genotype of nine microsatellites loci was determined for 74 juveniles (dbh < 10 cm), 59 subadults (10 dbh < 50 cm), 76 adults (50 dbh < 100 cm), and 54 large adult trees (dbh 100 cm). The results show a clear tendency of increase in the levels of observed heterozygosity and decrease in the fixation index between juveniles and large adult trees. Although these results were not significant (t-test, P > 0.05), they suggest the occurrence of inbreeding depression. All ontogenic stages showed spatial genetic structure at short distance classes (<200 m), but the levels are not constant among the subpopulations. The harvest of 61% of the reproductive trees caused a loss of 37 (25%) low frequency and rare alleles from the mature population. However, 24 of the ‘‘lost’’ alleles are present in juvenile and subadult populations which might allow their reintroduction into the population when these trees become reproductive. RIL also caused a reduction of the observed and expected heterozygosity of the unlogged reproductive population in comparison to the reproductive population, although these results were not statistically significant (t-test, P > 0.05). Logging also reduced the distance of the spatial genetic structure in the reproductive population from about 800 to 200 m. In general, our results indicate that RIL affected the gene pool and spatial genetic structure of the reproductive population. # 2007 Elsevier B.V. All rights reserved. MenosLevels of genetic diversity, inbreeding, and spatial genetic structure were investigated at different ontogenic stages for a population of Hymanaea courbaril, before and after Reduced Impact Logging (RIL) was applied, in a 546-ha plot in the Tapajo´s National Forest, in the Brazilian Amazon. The multilocus genotype of nine microsatellites loci was determined for 74 juveniles (dbh < 10 cm), 59 subadults (10 dbh < 50 cm), 76 adults (50 dbh < 100 cm), and 54 large adult trees (dbh 100 cm). The results show a clear tendency of increase in the levels of observed heterozygosity and decrease in the fixation index between juveniles and large adult trees. Although these results were not significant (t-test, P > 0.05), they suggest the occurrence of inbreeding depression. All ontogenic stages showed spatial genetic structure at short distance classes (<200 m), but the levels are not constant among the subpopulations. The harvest of 61% of the reproductive trees caused a loss of 37 (25%) low frequency and rare alleles from the mature population. However, 24 of the ‘‘lost’’ alleles are present in juvenile and subadult populations which might allow their reintroduction into the population when these trees become reproductive. RIL also caused a reduction of the observed and expected heterozygosity of the unlogged reproductive population in comparison to the reproductive population, although these results were not statistically significant (t-test, P > 0.05). Logging also reduced the dista... Mostrar Tudo |
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Palavras-Chave: |
Brasil; Hymrnaea courbaril; Impact. |
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Thesagro: |
Árvore Angiosperma; Genética; Jatobá. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02507naa a2200229 a 4500
001 1304067
005 2015-02-25
008 2008 bl uuuu u00u1 u #d
100 1 $aLACERDA, A. E. B. de
245 $aEffects of reduced impact logging on genetic diversity and spatial genetic structure of a Hymenaea courbaril population in the Brazilian Amazon Forest$h[electronic resource]
260 $c2008
520 $aLevels of genetic diversity, inbreeding, and spatial genetic structure were investigated at different ontogenic stages for a population of Hymanaea courbaril, before and after Reduced Impact Logging (RIL) was applied, in a 546-ha plot in the Tapajo´s National Forest, in the Brazilian Amazon. The multilocus genotype of nine microsatellites loci was determined for 74 juveniles (dbh < 10 cm), 59 subadults (10 dbh < 50 cm), 76 adults (50 dbh < 100 cm), and 54 large adult trees (dbh 100 cm). The results show a clear tendency of increase in the levels of observed heterozygosity and decrease in the fixation index between juveniles and large adult trees. Although these results were not significant (t-test, P > 0.05), they suggest the occurrence of inbreeding depression. All ontogenic stages showed spatial genetic structure at short distance classes (<200 m), but the levels are not constant among the subpopulations. The harvest of 61% of the reproductive trees caused a loss of 37 (25%) low frequency and rare alleles from the mature population. However, 24 of the ‘‘lost’’ alleles are present in juvenile and subadult populations which might allow their reintroduction into the population when these trees become reproductive. RIL also caused a reduction of the observed and expected heterozygosity of the unlogged reproductive population in comparison to the reproductive population, although these results were not statistically significant (t-test, P > 0.05). Logging also reduced the distance of the spatial genetic structure in the reproductive population from about 800 to 200 m. In general, our results indicate that RIL affected the gene pool and spatial genetic structure of the reproductive population. # 2007 Elsevier B.V. All rights reserved.
650 $aAmazonia
650 $aÁrvore Angiosperma
650 $aGenética
650 $aJatobá
653 $aBrasil
653 $aHymrnaea courbaril
653 $aImpact
700 1 $aKANASHIRO, M.
700 1 $aSEBBENN, A. M.
773 $tForest Ecology and Management, Amsterdam$gv. 255, p. 1034-1043, 2008.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agropecuária Oeste. Para informações adicionais entre em contato com cpao.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agropecuária Oeste. |
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Data corrente: |
03/10/2007 |
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Data da última atualização: |
13/03/2008 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Circulação/Nível: |
-- - -- |
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Autoria: |
ISHIKAWA, M. M; OLIVEIRA, M. S. de; PEREIRA, R. A. C.; RESENDE, E. K. de; SANTOS, J. F. dos; LIMA, R. P. |
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Afiliação: |
Márcia Mayumi Ishikawa, Embrapa Agropecuária Oeste; Marcelo Soares de Oliveira, Ecoa - Ecologia e Ação; Rosana Aparecida Cândido Pereira, IBAMA; Emiko Kawakami de Resende, Embrapa Pantanal; Jean Fernandes dos Santos, ECOA - Campo Grande; Ricardo Pinheiro Lima, IBAMA. |
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Título: |
Acompanhamento do comportamento e quadro clínico de tuviras (Gymnotus carapo) em laboratório |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE PRODUÇÃO DE PEIXES NATIVOS DE ÁGUA DOCE, 1.; ENCONTRO DE PISCICULTORES DE MATO GROSSO DO SUL, 1., 2007, Dourados. Anais... Dourados: Embrapa Agropecuária Oeste; Corumbá: Embrapa Pantanal, 2007. |
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Série: |
(Embrapa Agropecuária Oeste. Documentos, 87). |
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Idioma: |
Português |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00756naa a2200181 a 4500
001 1254679
005 2008-03-13
008 2007 bl uuuu u00u1 u #d
100 1 $aISHIKAWA, M. M
245 $aAcompanhamento do comportamento e quadro clínico de tuviras (Gymnotus carapo) em laboratório
260 $c2007
490 $a(Embrapa Agropecuária Oeste. Documentos, 87).
700 1 $aOLIVEIRA, M. S. de
700 1 $aPEREIRA, R. A. C.
700 1 $aRESENDE, E. K. de
700 1 $aSANTOS, J. F. dos
700 1 $aLIMA, R. P.
773 $tIn: CONGRESSO BRASILEIRO DE PRODUÇÃO DE PEIXES NATIVOS DE ÁGUA DOCE, 1.; ENCONTRO DE PISCICULTORES DE MATO GROSSO DO SUL, 1., 2007, Dourados. Anais... Dourados: Embrapa Agropecuária Oeste; Corumbá: Embrapa Pantanal, 2007.
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