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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/02/2013 |
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Data da última atualização: |
19/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VIEIRA, F. de A.; FAJARDO, C. G.; SOUZA, A. M. de; REIS, C. A. F.; CARVALHO, D. de. |
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Afiliação: |
Fábio de Almeida Vieira, UFRN; Cristiane Gouvêa Fajardo, UFRN; Anderson Marcos de Souza, UnB; CRISTIANE APARECIDA FIORAVANTE REIS, CNPF; Dulcinéia de Carvalho, UFLA. |
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Título: |
Fine-scale genetic dynamics of a dominant neotropical tree in the threatened Brazilian Atlantic Rainforest. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Tree Genetics & Genomes, v. 8, p. 1191-1201, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
We present a case study of the relationship between
spatial genetic structure (SGS) and age structure in
Protium spruceanum (Burseraceae), an insect-pollinated,
mass-fruiting, and secondary bird-dispersed tree, as determined
through variation in allozyme loci. Using ten polymorphic
loci, we investigated spatial and temporal patterns
of a genetic structure within a 40 m×60 m plot in a small
(1.0 ha) fragment of Atlantic Rainforest to investigate the
processes shaping the distribution of genetic diversity.
Individuals (n0345) from seedlings to adults were grouped
and analyzed in four diameter classes. The results showed a
high average level of genetic diversity (He00.438), but
genetic diversity parameters did not vary significantly
among cohorts. The spatial distribution pattern analysis of
individuals showed significant levels of aggregation among
small- and medium-diameter classes and random distribution
among the highest diameter class, likely due to processes
of competitive thinning. There was an association between
demographic and SGS at short distances (less than 10 m)
which is likely the consequence of restricted seed dispersal.
The degree of SGS decreased across small- to large-diameter
classes.We inferred that limited seed dispersal and subsequent
density-dependent mortality from the family clusters are responsible
for the observed changes in fine-scale SGS across
different demographic classes. |
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Palavras-Chave: |
Banco de semente; Diversidade genética; Protium spruceanum. |
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Thesagro: |
Burseraceae; Inseto Polinizador. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02104naa a2200229 a 4500
001 1948921
005 2015-02-19
008 2012 bl uuuu u00u1 u #d
100 1 $aVIEIRA, F. de A.
245 $aFine-scale genetic dynamics of a dominant neotropical tree in the threatened Brazilian Atlantic Rainforest.
260 $c2012
520 $aWe present a case study of the relationship between spatial genetic structure (SGS) and age structure in Protium spruceanum (Burseraceae), an insect-pollinated, mass-fruiting, and secondary bird-dispersed tree, as determined through variation in allozyme loci. Using ten polymorphic loci, we investigated spatial and temporal patterns of a genetic structure within a 40 m×60 m plot in a small (1.0 ha) fragment of Atlantic Rainforest to investigate the processes shaping the distribution of genetic diversity. Individuals (n0345) from seedlings to adults were grouped and analyzed in four diameter classes. The results showed a high average level of genetic diversity (He00.438), but genetic diversity parameters did not vary significantly among cohorts. The spatial distribution pattern analysis of individuals showed significant levels of aggregation among small- and medium-diameter classes and random distribution among the highest diameter class, likely due to processes of competitive thinning. There was an association between demographic and SGS at short distances (less than 10 m) which is likely the consequence of restricted seed dispersal. The degree of SGS decreased across small- to large-diameter classes.We inferred that limited seed dispersal and subsequent density-dependent mortality from the family clusters are responsible for the observed changes in fine-scale SGS across different demographic classes.
650 $aBurseraceae
650 $aInseto Polinizador
653 $aBanco de semente
653 $aDiversidade genética
653 $aProtium spruceanum
700 1 $aFAJARDO, C. G.
700 1 $aSOUZA, A. M. de
700 1 $aREIS, C. A. F.
700 1 $aCARVALHO, D. de
773 $tTree Genetics & Genomes$gv. 8, p. 1191-1201, 2012.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Registros recuperados : 6 | |
| 6. |  | VIEIRA, F. de A.; NOVAES, R. M. L.; FAJARDO, C. G.; SANTOS, R. M. dos; ALMEIDA, H. de S.; CARVALHO, D. de; LOVATO, M. B. Holocene southward expansion in seasonally dry tropical forests in South America: phylogeography of Ficus bonijesulapensis (Moraceae). Botanical Journal of the Linnean Society, London, v. 177, n. 2, p. 189-201, 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| Registros recuperados : 6 | |
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