Artigo

Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia

We quantified the within-population genetic variation of Couratari multiflora and C. guianensis, two tree species found in 'terra firme' forests of central Amazonia. Both species have some ecological features in common, but they differ in population abundance across their geographic ranges. While C....

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Autor principal: Lepsch-Cunha, Nadja
Outros Autores: Kageyama, Paulo Yoshio, Vencovsky, Roland
Grau: Artigo
Idioma: English
Publicado em: Biodiversity and Conservation 2020
Assuntos:
Genetic Variation
Genetics, Population
Rarity
South America
Couratari Guianensis
Couratari Multiflora
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/19241
id oai:repositorio:1-19241
recordtype dspace
spelling oai:repositorio:1-19241 Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia Lepsch-Cunha, Nadja Kageyama, Paulo Yoshio Vencovsky, Roland Genetic Variation Genetics, Population Rarity South America Couratari Guianensis Couratari Multiflora We quantified the within-population genetic variation of Couratari multiflora and C. guianensis, two tree species found in 'terra firme' forests of central Amazonia. Both species have some ecological features in common, but they differ in population abundance across their geographic ranges. While C. multiflora has been found only in low-density populations in all sites studied to date, C. guianensis is relatively common in some sites and very scarce in others. In a 400-ha plot, we found 41 and 29 adults of C. multiflora and C. guianensis, respectively. Twenty-two saplings of C. guianensis and 103 seedlings of C. multiflora were also examined. The mean expected heterozygosities (Hem) of seedlings and adults of C. multiflora were 0.431 and 0.436, and the mean fixation indices (F(m)), 0.114 and 0.176, respectively. For C. guianensis, saplings and adults presented H(em) equal to 0.425 and 0.429, and the F(m) were 0.393 and 0.527, respectively. These low-density populations of two congeneric species did not differ in terms of genetic diversity, but rather they differed in terms of mean observed heterozygosity (H(om)), and therefore F(m). The species with variable population density had lower Horn and greater F(m) relative to the species that is always found in low-density. 2020-06-15T22:06:36Z 2020-06-15T22:06:36Z 1999 Artigo https://repositorio.inpa.gov.br/handle/1/19241 10.1023/A:1008979010728 en Volume 8, Número 9, Pags. 1205-1218 Restrito Biodiversity and Conservation
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Genetic Variation
Genetics, Population
Rarity
South America
Couratari Guianensis
Couratari Multiflora
spellingShingle Genetic Variation
Genetics, Population
Rarity
South America
Couratari Guianensis
Couratari Multiflora
Lepsch-Cunha, Nadja
Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia
topic_facet Genetic Variation
Genetics, Population
Rarity
South America
Couratari Guianensis
Couratari Multiflora
description We quantified the within-population genetic variation of Couratari multiflora and C. guianensis, two tree species found in 'terra firme' forests of central Amazonia. Both species have some ecological features in common, but they differ in population abundance across their geographic ranges. While C. multiflora has been found only in low-density populations in all sites studied to date, C. guianensis is relatively common in some sites and very scarce in others. In a 400-ha plot, we found 41 and 29 adults of C. multiflora and C. guianensis, respectively. Twenty-two saplings of C. guianensis and 103 seedlings of C. multiflora were also examined. The mean expected heterozygosities (Hem) of seedlings and adults of C. multiflora were 0.431 and 0.436, and the mean fixation indices (F(m)), 0.114 and 0.176, respectively. For C. guianensis, saplings and adults presented H(em) equal to 0.425 and 0.429, and the F(m) were 0.393 and 0.527, respectively. These low-density populations of two congeneric species did not differ in terms of genetic diversity, but rather they differed in terms of mean observed heterozygosity (H(om)), and therefore F(m). The species with variable population density had lower Horn and greater F(m) relative to the species that is always found in low-density.
format Artigo
author Lepsch-Cunha, Nadja
author2 Kageyama, Paulo Yoshio
Vencovsky, Roland
author2Str Kageyama, Paulo Yoshio
Vencovsky, Roland
title Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia
title_short Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia
title_full Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia
title_fullStr Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia
title_full_unstemmed Genetic diversity of Couratari multiflora and Couratari guianensis (Lecythidaceae): Consequences of two types of rarity in central Amazonia
title_sort genetic diversity of couratari multiflora and couratari guianensis (lecythidaceae): consequences of two types of rarity in central amazonia
publisher Biodiversity and Conservation
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/19241
_version_ 1787145099687231488
score 11.755432

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