Artigo

Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic

Fragmentation that alters mutualistic relationships between plants and frugivorous animals may reduce the seed dispersal of trees. We examined the effects of forest fragmentation on the distributions of seeds and seedlings of a Central Amazon endemic tree, Duckeodendron cestroides. In the dry season...

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Autor principal: Cramer, Jennifer M.
Outros Autores: Mesquita, Rita de Cássia Guimarães, Bentos, Tony Vizcarra, Moser, Barry, Williamson, G. Bruce
Grau: Artigo
Idioma: English
Publicado em: Biotropica 2020
Assuntos:
Endemic Species
Forest Ecosystem
Fruit Production
Habitat Fragmentation
Mutualism
Regression Analysis
Seed Dispersal
Shrub
Animalsia
Duckeodendron
Duckeodendron Cestroides
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18622
id oai:repositorio:1-18622
recordtype dspace
spelling oai:repositorio:1-18622 Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic Cramer, Jennifer M. Mesquita, Rita de Cássia Guimarães Bentos, Tony Vizcarra Moser, Barry Williamson, G. Bruce Endemic Species Forest Ecosystem Fruit Production Habitat Fragmentation Mutualism Regression Analysis Seed Dispersal Shrub Animalsia Duckeodendron Duckeodendron Cestroides Fragmentation that alters mutualistic relationships between plants and frugivorous animals may reduce the seed dispersal of trees. We examined the effects of forest fragmentation on the distributions of seeds and seedlings of a Central Amazon endemic tree, Duckeodendron cestroides. In the dry seasons of 2002-2004, seeds and first-year seedlings were counted within wedge-shaped transects centered around Duckeodendron adults in fragments and nearby continuous forests at the Biological Dynamics of Forest Fragmentation Project. Analyses showed that fragmentation reduced seed dispersal quantity and quality. The percent and distance of dispersed seeds were both twice as great in continuous forest as in fragments. The distances of each tree's five furthest dispersed seeds were three times greater in continuous forest than fragments. Over the 3-yr study, 20 times more seeds were dispersed more than 10 m from parent crowns in continuous forest than fragments. A regression analysis showed more dispersed seeds at all distances in continuous forest than fragments. Dispersal differences were strong in 2002 and 2004, years of large fruit crops, but weak or absent in 2003, when fruit production was low. As distance from parent crowns increased, the number of seedlings declined more rapidly in fragments than continuous forest. Distance-dependent mortality between the seed and seedling stages appeared to be more important in continuous forest than fragments. This research provides ample, indirect evidence demonstrating that forest fragmentation can result in the breakdown of a seed dispersal mutualism, potentially jeopardizing the reproduction of a rare, tropical tree. © 2007 The Author(s). 2020-06-15T22:02:18Z 2020-06-15T22:02:18Z 2007 Artigo https://repositorio.inpa.gov.br/handle/1/18622 10.1111/j.1744-7429.2007.00317.x en Volume 39, Número 6, Pags. 709-718 Restrito Biotropica
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Endemic Species
Forest Ecosystem
Fruit Production
Habitat Fragmentation
Mutualism
Regression Analysis
Seed Dispersal
Shrub
Animalsia
Duckeodendron
Duckeodendron Cestroides
spellingShingle Endemic Species
Forest Ecosystem
Fruit Production
Habitat Fragmentation
Mutualism
Regression Analysis
Seed Dispersal
Shrub
Animalsia
Duckeodendron
Duckeodendron Cestroides
Cramer, Jennifer M.
Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic
topic_facet Endemic Species
Forest Ecosystem
Fruit Production
Habitat Fragmentation
Mutualism
Regression Analysis
Seed Dispersal
Shrub
Animalsia
Duckeodendron
Duckeodendron Cestroides
description Fragmentation that alters mutualistic relationships between plants and frugivorous animals may reduce the seed dispersal of trees. We examined the effects of forest fragmentation on the distributions of seeds and seedlings of a Central Amazon endemic tree, Duckeodendron cestroides. In the dry seasons of 2002-2004, seeds and first-year seedlings were counted within wedge-shaped transects centered around Duckeodendron adults in fragments and nearby continuous forests at the Biological Dynamics of Forest Fragmentation Project. Analyses showed that fragmentation reduced seed dispersal quantity and quality. The percent and distance of dispersed seeds were both twice as great in continuous forest as in fragments. The distances of each tree's five furthest dispersed seeds were three times greater in continuous forest than fragments. Over the 3-yr study, 20 times more seeds were dispersed more than 10 m from parent crowns in continuous forest than fragments. A regression analysis showed more dispersed seeds at all distances in continuous forest than fragments. Dispersal differences were strong in 2002 and 2004, years of large fruit crops, but weak or absent in 2003, when fruit production was low. As distance from parent crowns increased, the number of seedlings declined more rapidly in fragments than continuous forest. Distance-dependent mortality between the seed and seedling stages appeared to be more important in continuous forest than fragments. This research provides ample, indirect evidence demonstrating that forest fragmentation can result in the breakdown of a seed dispersal mutualism, potentially jeopardizing the reproduction of a rare, tropical tree. © 2007 The Author(s).
format Artigo
author Cramer, Jennifer M.
author2 Mesquita, Rita de Cássia Guimarães
Bentos, Tony Vizcarra
Moser, Barry
Williamson, G. Bruce
author2Str Mesquita, Rita de Cássia Guimarães
Bentos, Tony Vizcarra
Moser, Barry
Williamson, G. Bruce
title Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic
title_short Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic
title_full Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic
title_fullStr Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic
title_full_unstemmed Forest fragmentation reduces seed dispersal of Duckeodendron cestroides, a Central Amazon endemic
title_sort forest fragmentation reduces seed dispersal of duckeodendron cestroides, a central amazon endemic
publisher Biotropica
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18622
_version_ 1787144140856754176
score 11.755432

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