Artigo

Demographic and life-history correlates for Amazonian trees

Questions: Which demographic and life-history differences are found among 95 sympatric tree species? Are there correlations among demographic parameters within this assemblage? Location: Central Amazonian rain forest. Methods: Using long-term data from 24 1-ha permanent plots, eight characteristics...

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Autor principal: Nascimento, Henrique Eduardo Mendonça
Outros Autores: Laurance, William F., Condit, Richard S., Laurance, Susan G.W., D'Angelo, Sammya Agra, Andrade, Ana C.S.
Grau: Artigo
Idioma: English
Publicado em: Journal of Vegetation Science 2020
Assuntos:
Demography
Growth Rate
Life History
Mortality
Pioneer Species
Recruitment
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18801
id oai:repositorio:1-18801
recordtype dspace
spelling oai:repositorio:1-18801 Demographic and life-history correlates for Amazonian trees Nascimento, Henrique Eduardo Mendonça Laurance, William F. Condit, Richard S. Laurance, Susan G.W. D'Angelo, Sammya Agra Andrade, Ana C.S. Demography Growth Rate Life History Mortality Pioneer Species Recruitment Questions: Which demographic and life-history differences are found among 95 sympatric tree species? Are there correlations among demographic parameters within this assemblage? Location: Central Amazonian rain forest. Methods: Using long-term data from 24 1-ha permanent plots, eight characteristics were estimated for each species: wood density, annual mortality rate, annual recruitment rate, mean stem diameter, maximum stem diameter, mean stemgrowth rate, maximum stem-growth rate, population density. Results: An ordination analysis revealed that tree characteristics varied along two major axes of variation, the major gradient expressing light requirements and successional status, and the second gradient related to tree size. Along these gradients, four relatively discrete tree guilds could be distinguished: fast-growing pioneer species, shade-tolerant subcanopy species, canopy trees, and emergent species. Pioneers were uncommon and most trees were canopy or emergent species, which frequently had low mortality and recruitment. Wood density was negatively associated with tree mortality, recruitment, and growth rates when all species were considered. Growth rates varied markedly among and within species, with pioneers exhibiting far faster and less variable growth rates than did the other species. Slow growth in subcanopy species relative to canopy and emergent trees was not a simple consequence of mean tree size, but apparently resulted from physiological constraints imposed by low-light and other conditions in the forest understorey. Conclusions: Trees of Amazonian rain forests could be classified with some success into four relatively distinctive guilds. However, several demographic and life-history traits, such as those that distinguish early and late successional species, probably vary along a continuum, rather than being naturally grouped into relatively discrete categories. © IAVS; Opulus Press. 2020-06-15T22:03:07Z 2020-06-15T22:03:07Z 2005 Artigo https://repositorio.inpa.gov.br/handle/1/18801 10.1658/1100-9233(2005)016[0625:DALCFA]2.0.CO;2 en Volume 16, Número 6, Pags. 625-634 Restrito Journal of Vegetation Science
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Demography
Growth Rate
Life History
Mortality
Pioneer Species
Recruitment
spellingShingle Demography
Growth Rate
Life History
Mortality
Pioneer Species
Recruitment
Nascimento, Henrique Eduardo Mendonça
Demographic and life-history correlates for Amazonian trees
topic_facet Demography
Growth Rate
Life History
Mortality
Pioneer Species
Recruitment
description Questions: Which demographic and life-history differences are found among 95 sympatric tree species? Are there correlations among demographic parameters within this assemblage? Location: Central Amazonian rain forest. Methods: Using long-term data from 24 1-ha permanent plots, eight characteristics were estimated for each species: wood density, annual mortality rate, annual recruitment rate, mean stem diameter, maximum stem diameter, mean stemgrowth rate, maximum stem-growth rate, population density. Results: An ordination analysis revealed that tree characteristics varied along two major axes of variation, the major gradient expressing light requirements and successional status, and the second gradient related to tree size. Along these gradients, four relatively discrete tree guilds could be distinguished: fast-growing pioneer species, shade-tolerant subcanopy species, canopy trees, and emergent species. Pioneers were uncommon and most trees were canopy or emergent species, which frequently had low mortality and recruitment. Wood density was negatively associated with tree mortality, recruitment, and growth rates when all species were considered. Growth rates varied markedly among and within species, with pioneers exhibiting far faster and less variable growth rates than did the other species. Slow growth in subcanopy species relative to canopy and emergent trees was not a simple consequence of mean tree size, but apparently resulted from physiological constraints imposed by low-light and other conditions in the forest understorey. Conclusions: Trees of Amazonian rain forests could be classified with some success into four relatively distinctive guilds. However, several demographic and life-history traits, such as those that distinguish early and late successional species, probably vary along a continuum, rather than being naturally grouped into relatively discrete categories. © IAVS; Opulus Press.
format Artigo
author Nascimento, Henrique Eduardo Mendonça
author2 Laurance, William F.
Condit, Richard S.
Laurance, Susan G.W.
D'Angelo, Sammya Agra
Andrade, Ana C.S.
author2Str Laurance, William F.
Condit, Richard S.
Laurance, Susan G.W.
D'Angelo, Sammya Agra
Andrade, Ana C.S.
title Demographic and life-history correlates for Amazonian trees
title_short Demographic and life-history correlates for Amazonian trees
title_full Demographic and life-history correlates for Amazonian trees
title_fullStr Demographic and life-history correlates for Amazonian trees
title_full_unstemmed Demographic and life-history correlates for Amazonian trees
title_sort demographic and life-history correlates for amazonian trees
publisher Journal of Vegetation Science
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18801
_version_ 1787142439313604608
score 11.755432

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