Artigo

Contrasting community compensatory trends in alternative successional pathways in central Amazonia

Based on eight years of annual censuses in secondary forests in central Amazonia, we compared successional dynamics in areas presenting alternative states due to different land use histories. Sites that had been clearcut without subsequent use are dominated by the pioneer genus Cecropia, but their u...

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Autor principal: Norden, Natalia
Outros Autores: Mesquita, Rita de Cássia Guimarães, Bentos, Tony Vizcarra, Chazdon, Robin L., Williamson, G. Bruce
Grau: Artigo
Idioma: English
Publicado em: Oikos 2020
Assuntos:
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/18241
id oai:repositorio:1-18241
recordtype dspace
spelling oai:repositorio:1-18241 Contrasting community compensatory trends in alternative successional pathways in central Amazonia Norden, Natalia Mesquita, Rita de Cássia Guimarães Bentos, Tony Vizcarra Chazdon, Robin L. Williamson, G. Bruce Clearcutting Colonization Dominance Epiphyte Evergreen Tree Land Use Secondary Forest Shrub Species Diversity Succession Understory Amazonia Bellucia Cecropia Vismia Based on eight years of annual censuses in secondary forests in central Amazonia, we compared successional dynamics in areas presenting alternative states due to different land use histories. Sites that had been clearcut without subsequent use are dominated by the pioneer genus Cecropia, but their understory is characterized by a diverse species assemblage. In contrast, areas clearcut and then used for pasture are dominated by the genus Vismia, forming nearly monogeneric stands. We evaluated whether such patterns were the outcome of differences in community compensatory trends, leading to a dynamic system of sequential replacement of species in Cecropia stands, and to a persistent stage of succession in Vismia stands. Floristic turnover in Cecropia stands showed strong and consistent negative frequency dependence. In contrast, Vismia stands exhibited little or no frequency dependence, likely due to local competitive interactions or priority effects. In these stands, species of the genera Vismia and Bellucia remained dominant throughout the monitoring period, whereas species initially of low abundance and frequency remained so. Differences in recruitment were the major driver of these alternative states. As species colonization proceeds, we expect dominance in the Vismia stands to diminish, albeit slowly. Our approach proved to be a useful tool for comparing species turnover in systems presenting alternative states. © 2011 The Authors. 2020-06-15T21:52:56Z 2020-06-15T21:52:56Z 2011 Artigo https://repositorio.inpa.gov.br/handle/1/18241 10.1111/j.1600-0706.2010.18335.x en Volume 120, Número 1, Pags. 143-151 Restrito Oikos
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Clearcutting
Colonization
Dominance
Epiphyte
Evergreen Tree
Land Use
Secondary Forest
Shrub
Species Diversity
Succession
Understory
Amazonia
Bellucia
Cecropia
Vismia
spellingShingle Clearcutting
Colonization
Dominance
Epiphyte
Evergreen Tree
Land Use
Secondary Forest
Shrub
Species Diversity
Succession
Understory
Amazonia
Bellucia
Cecropia
Vismia
Norden, Natalia
Contrasting community compensatory trends in alternative successional pathways in central Amazonia
topic_facet Clearcutting
Colonization
Dominance
Epiphyte
Evergreen Tree
Land Use
Secondary Forest
Shrub
Species Diversity
Succession
Understory
Amazonia
Bellucia
Cecropia
Vismia
description Based on eight years of annual censuses in secondary forests in central Amazonia, we compared successional dynamics in areas presenting alternative states due to different land use histories. Sites that had been clearcut without subsequent use are dominated by the pioneer genus Cecropia, but their understory is characterized by a diverse species assemblage. In contrast, areas clearcut and then used for pasture are dominated by the genus Vismia, forming nearly monogeneric stands. We evaluated whether such patterns were the outcome of differences in community compensatory trends, leading to a dynamic system of sequential replacement of species in Cecropia stands, and to a persistent stage of succession in Vismia stands. Floristic turnover in Cecropia stands showed strong and consistent negative frequency dependence. In contrast, Vismia stands exhibited little or no frequency dependence, likely due to local competitive interactions or priority effects. In these stands, species of the genera Vismia and Bellucia remained dominant throughout the monitoring period, whereas species initially of low abundance and frequency remained so. Differences in recruitment were the major driver of these alternative states. As species colonization proceeds, we expect dominance in the Vismia stands to diminish, albeit slowly. Our approach proved to be a useful tool for comparing species turnover in systems presenting alternative states. © 2011 The Authors.
format Artigo
author Norden, Natalia
author2 Mesquita, Rita de Cássia Guimarães
Bentos, Tony Vizcarra
Chazdon, Robin L.
Williamson, G. Bruce
author2Str Mesquita, Rita de Cássia Guimarães
Bentos, Tony Vizcarra
Chazdon, Robin L.
Williamson, G. Bruce
title Contrasting community compensatory trends in alternative successional pathways in central Amazonia
title_short Contrasting community compensatory trends in alternative successional pathways in central Amazonia
title_full Contrasting community compensatory trends in alternative successional pathways in central Amazonia
title_fullStr Contrasting community compensatory trends in alternative successional pathways in central Amazonia
title_full_unstemmed Contrasting community compensatory trends in alternative successional pathways in central Amazonia
title_sort contrasting community compensatory trends in alternative successional pathways in central amazonia
publisher Oikos
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/18241
_version_ 1787144354170667008
score 11.653393