Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations.
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/506234 |
Resumo: | The emergence of Brazilian extractive reserves reinforced the notion that sustainable forest use could play a central role in conservation. Brazil nut is considered a model non-timber product for promoting conservation through use. Demographic studies, however, have demonstrated differential impacts of nut harvest on Brazil nut population structure. Comparing three populations with different forest use histories, degrees of road access, and recent levels of nut harvest, we asked: (1) Are they exhibiting regeneration failure? and (2) Are seedling/sapling densities explained by adult Brazil nut structure, fruit fate and/or overall forest structure? We installed four 9-ha plots in each site to census Brazil nut trees > 10 cm dbh, and within each plot, 36 subplots (25 × 25 m each) to quantify regeneration, overall forest structure, and open and closed fruit counts. Approximately 29-55% of fruits was unharvested, and more than 90% of these was opened by scatterhoarding dispersers. Population structure approximated a reverse-J size class distribution, with seedling densities varying from 3.2 to 5.8 individuals ha-1. We conclude that within the current harvest context, regeneration is sufficient for population persistence in our sites, at least over the medium term. The socioeconomics of sustainably managing Brazil nut is the greater challenge, involving interlinked competitive land uses, nut quality, and substantial increases in local income from harvest. Some of these challenges are being addressed in Brazil, Bolivia and Peru, providing hope that this cornerstone extractive species will continue to play a prominent role in the ecological and economic landscape of Amazonia. |
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Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations.Castanha do brasilProduto florestal não madeireiro (PFNM)Manejo florestalReserva extrativistaExtractive reserveReserva extractivaProductos forestales no madererosNuez del BrasilRegeneración naturalSilvicultura sustentableCastanha do paráBertholletia excelsaRegeneração naturalBrazil nutsNontimber forest productsSustainable forestryNatural regenerationThe emergence of Brazilian extractive reserves reinforced the notion that sustainable forest use could play a central role in conservation. Brazil nut is considered a model non-timber product for promoting conservation through use. Demographic studies, however, have demonstrated differential impacts of nut harvest on Brazil nut population structure. Comparing three populations with different forest use histories, degrees of road access, and recent levels of nut harvest, we asked: (1) Are they exhibiting regeneration failure? and (2) Are seedling/sapling densities explained by adult Brazil nut structure, fruit fate and/or overall forest structure? We installed four 9-ha plots in each site to census Brazil nut trees > 10 cm dbh, and within each plot, 36 subplots (25 × 25 m each) to quantify regeneration, overall forest structure, and open and closed fruit counts. Approximately 29-55% of fruits was unharvested, and more than 90% of these was opened by scatterhoarding dispersers. Population structure approximated a reverse-J size class distribution, with seedling densities varying from 3.2 to 5.8 individuals ha-1. We conclude that within the current harvest context, regeneration is sufficient for population persistence in our sites, at least over the medium term. The socioeconomics of sustainably managing Brazil nut is the greater challenge, involving interlinked competitive land uses, nut quality, and substantial increases in local income from harvest. Some of these challenges are being addressed in Brazil, Bolivia and Peru, providing hope that this cornerstone extractive species will continue to play a prominent role in the ecological and economic landscape of Amazonia.LUCIA HELENA DE OLIVEIRA WADT, CPAF-AC; Karen A. Kainer, University of Florida; C. L. Staudhammer, University of Florida; Rodrigo O. P. Serrano, Universidade Federal do Acre (Ufac).WADT, L. H. de O.KAINER, K. A.STAUDHAMMER, C. L.SERRANO, R. O. P.2011-04-10T11:11:11Z2011-04-10T11:11:11Z2008-05-2920082019-01-08T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleBiological Conservation, Amsterdam, v. 141, n. 1, p. 332-346, Jan. 2008.0006-3207http://www.alice.cnptia.embrapa.br/alice/handle/doc/50623410.1016/j.biocon.2007.10.007enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T03:56:43Zoai:www.alice.cnptia.embrapa.br:doc/506234Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T03:56:43falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T03:56:43Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. |
title |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. |
spellingShingle |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. WADT, L. H. de O. Castanha do brasil Produto florestal não madeireiro (PFNM) Manejo florestal Reserva extrativista Extractive reserve Reserva extractiva Productos forestales no madereros Nuez del Brasil Regeneración natural Silvicultura sustentable Castanha do pará Bertholletia excelsa Regeneração natural Brazil nuts Nontimber forest products Sustainable forestry Natural regeneration |
title_short |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. |
title_full |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. |
title_fullStr |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. |
title_full_unstemmed |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. |
title_sort |
Sustainable forest use in Brazilian extractive reserves: natural regeneration of Brazil nut in exploited populations. |
author |
WADT, L. H. de O. |
author_facet |
WADT, L. H. de O. KAINER, K. A. STAUDHAMMER, C. L. SERRANO, R. O. P. |
author_role |
author |
author2 |
KAINER, K. A. STAUDHAMMER, C. L. SERRANO, R. O. P. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
LUCIA HELENA DE OLIVEIRA WADT, CPAF-AC; Karen A. Kainer, University of Florida; C. L. Staudhammer, University of Florida; Rodrigo O. P. Serrano, Universidade Federal do Acre (Ufac). |
dc.contributor.author.fl_str_mv |
WADT, L. H. de O. KAINER, K. A. STAUDHAMMER, C. L. SERRANO, R. O. P. |
dc.subject.por.fl_str_mv |
Castanha do brasil Produto florestal não madeireiro (PFNM) Manejo florestal Reserva extrativista Extractive reserve Reserva extractiva Productos forestales no madereros Nuez del Brasil Regeneración natural Silvicultura sustentable Castanha do pará Bertholletia excelsa Regeneração natural Brazil nuts Nontimber forest products Sustainable forestry Natural regeneration |
topic |
Castanha do brasil Produto florestal não madeireiro (PFNM) Manejo florestal Reserva extrativista Extractive reserve Reserva extractiva Productos forestales no madereros Nuez del Brasil Regeneración natural Silvicultura sustentable Castanha do pará Bertholletia excelsa Regeneração natural Brazil nuts Nontimber forest products Sustainable forestry Natural regeneration |
description |
The emergence of Brazilian extractive reserves reinforced the notion that sustainable forest use could play a central role in conservation. Brazil nut is considered a model non-timber product for promoting conservation through use. Demographic studies, however, have demonstrated differential impacts of nut harvest on Brazil nut population structure. Comparing three populations with different forest use histories, degrees of road access, and recent levels of nut harvest, we asked: (1) Are they exhibiting regeneration failure? and (2) Are seedling/sapling densities explained by adult Brazil nut structure, fruit fate and/or overall forest structure? We installed four 9-ha plots in each site to census Brazil nut trees > 10 cm dbh, and within each plot, 36 subplots (25 × 25 m each) to quantify regeneration, overall forest structure, and open and closed fruit counts. Approximately 29-55% of fruits was unharvested, and more than 90% of these was opened by scatterhoarding dispersers. Population structure approximated a reverse-J size class distribution, with seedling densities varying from 3.2 to 5.8 individuals ha-1. We conclude that within the current harvest context, regeneration is sufficient for population persistence in our sites, at least over the medium term. The socioeconomics of sustainably managing Brazil nut is the greater challenge, involving interlinked competitive land uses, nut quality, and substantial increases in local income from harvest. Some of these challenges are being addressed in Brazil, Bolivia and Peru, providing hope that this cornerstone extractive species will continue to play a prominent role in the ecological and economic landscape of Amazonia. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-05-29 2008 2011-04-10T11:11:11Z 2011-04-10T11:11:11Z 2019-01-08T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Biological Conservation, Amsterdam, v. 141, n. 1, p. 332-346, Jan. 2008. 0006-3207 http://www.alice.cnptia.embrapa.br/alice/handle/doc/506234 10.1016/j.biocon.2007.10.007 |
identifier_str_mv |
Biological Conservation, Amsterdam, v. 141, n. 1, p. 332-346, Jan. 2008. 0006-3207 10.1016/j.biocon.2007.10.007 |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/506234 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503430124863488 |