Seed and seedling survival of the palm Astrocaryum murumuru and the legume tree Dipteryx micrantha in gaps in Amazonia forest (Record no. 465861)

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-- En
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-- SEMI
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Código de idioma Ingles
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-- ASTROCARYUM
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-- DIPTERYX
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-- FOREST TREES
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-- SEED
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-- SEED DISPERSAL
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-- SEEDLINGS
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-- NATURAL REGENERATION
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-- ASTROCARYUM
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-- DIPTERYX
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-- ARBRE FORESTIER
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-- SEMENCE
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-- DISSEMINATION DES GRAINES
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-- PLANTULE
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-- REGENERATION NATURELLE
040 ## - Fuente de catalogacion
Agencia de catalogación CR-TuBCO
Agencia que realiza la transcripción CR-TuBCO
Idioma de catalogación Es
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Campo de Control CR-TuBCO
100 1# - Entrada principal -- Nombre personal
Nombre personal Cintra, R.
100 1# - Entrada principal -- Nombre personal
Nombre personal Horna, V.
260 ## - Publicación, distribución, etc. (Pie de imprenta)
Fecha de publicación, distribución, etc. 1997
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Título Seed and seedling survival of the palm Astrocaryum murumuru and the legume tree Dipteryx micrantha in gaps in Amazonia forest
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Nota General 6 ilus. 1 tab. Bib.
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Nota de sumario, etc. The role of regeneration strategies in structuring tropical tree communities has been a recent focus of attention of tropical ecologists. Canopy discontinuities created by tree-falls are considered to be critical to many rain forest trees for establishing and completing their life cycles. It was investigated whether it is advantageous for two common large-seeded and shade tolerant Amazonian tree species, the palm Astrocaryum murumuru and the legume Dipteryx micrantha, to have their seeds dispersed to gaps. The dispersal process was simulated by placing experimental seeds and seedlings in gaps and in the shades understorey, and then following their performance. Seeds and seedlings from the two species were used. The Cox proportional hazard model was used to estimate the survival functions and compare survivorship curves. Survival of Astrocaryum seeds, and of Dipteryx seeds and seedlings, was higher in two gap zones (crown and bole) than in the shaded understorey (both near and far away from a conspecific adult). A higher proportion of seedlings of both plant species survived within gaps than in the shaded understorey over and 18-wk period. One year after the seedlings had been transplanted into gaps these patterns still held. Naturally occurring Astrocaryum seeds survived better beneath conspecific adult trees located within 30m of gaps than beneath trees located 100m from gaps. Variation in gap size was significant for Dipteryx seeds, but not for Dipteryx seedlings and Astrocaryum seeds and seedlings. Dipteryx seeds survived longer in smaller than in larger gaps. By colonizing tree-fall gaps, these two species improved their chances of completing their life cycles.
650 14 - Asiento secundario de materia--Termino temático
Término temático o nombre geográfico como elemento de entrada ASTROCARYUM
650 14 - Asiento secundario de materia--Termino temático
Término temático o nombre geográfico como elemento de entrada DIPTERYX
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Término temático o nombre geográfico como elemento de entrada ARBOLES FORESTALES
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Término temático o nombre geográfico como elemento de entrada SEMILLAS
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Término temático o nombre geográfico como elemento de entrada DISEMINACION DE SEMILLAS
650 14 - Asiento secundario de materia--Termino temático
Término temático o nombre geográfico como elemento de entrada PLANTULAS
650 14 - Asiento secundario de materia--Termino temático
Término temático o nombre geográfico como elemento de entrada REGENERACION NATURAL
773 0# - Asiento del ITEM fuente
Título Journal of Tropical Ecology (EUA)
Lugar, editorial y fecha de publicación 1997
Información sobre la relación v. 13(2) p. 257-277
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Meeting name or jurisdiction name as entry element XL2003500569
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Put command parameter J
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Tipo de material Analítica

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