Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.

Detalhes bibliográficos
Autor(a) principal: PAIVA, P. M. V. de
Data de Publicação: 2019
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/1119290
Resumo: Considered a cornerstone species in Amazonian forest conservation strategies, the Brazil nut enjoys a unique status. It is immune to cutting and most of its distribution is under some category of protected area. Nonetheless, both nut-gatherers and researchers consistently report insufficient natural regeneration levels and the population decline of high-density stands, including at strict nature reserves. The initial hypothesis of seed overharvesting lacks consensus as later studies identified the scarcity of canopy gaps at mature forests as the main cause for the recruitment failure of this gap-loving species. This observation supports the anthropogenic origin hypothesis and is consistent with the abundant recruitment observed in traditional swiddens, where the regeneration density increases with the number of cultivation cycles. This is due to a number of factors, including the scatterhoarder habit of the natural disperser, gap-clearance frequency, species? resistance to fire and remarkable re-sprouting capability. Nut-gatherers intuitively understand the role of swiddens for the maintenance and expansion of high-density Brazil nut stands, and many voluntarily protect their spontaneously enriched fallows from further cultivation cycles. Surprisingly, the very conservation policies end up hindering such traditional management practices. For example, when forbidding nutgatherers/swidden-farmers from clearing new plots of forest in exchange for those fallows they chose to protect. Expensive, labor-intensive and unpopular recommendations like enrichment planting are puny alternatives for what the ubiquitous swiddens can do, provided revised policies allow them to. Failing that, densities of senescent Brazil nut stands will continue to decrease until hardly justifying the ?sustainable alternative to deforestation? discourse.
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spelling Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.CastanhaRegeneração NaturalConsidered a cornerstone species in Amazonian forest conservation strategies, the Brazil nut enjoys a unique status. It is immune to cutting and most of its distribution is under some category of protected area. Nonetheless, both nut-gatherers and researchers consistently report insufficient natural regeneration levels and the population decline of high-density stands, including at strict nature reserves. The initial hypothesis of seed overharvesting lacks consensus as later studies identified the scarcity of canopy gaps at mature forests as the main cause for the recruitment failure of this gap-loving species. This observation supports the anthropogenic origin hypothesis and is consistent with the abundant recruitment observed in traditional swiddens, where the regeneration density increases with the number of cultivation cycles. This is due to a number of factors, including the scatterhoarder habit of the natural disperser, gap-clearance frequency, species? resistance to fire and remarkable re-sprouting capability. Nut-gatherers intuitively understand the role of swiddens for the maintenance and expansion of high-density Brazil nut stands, and many voluntarily protect their spontaneously enriched fallows from further cultivation cycles. Surprisingly, the very conservation policies end up hindering such traditional management practices. For example, when forbidding nutgatherers/swidden-farmers from clearing new plots of forest in exchange for those fallows they chose to protect. Expensive, labor-intensive and unpopular recommendations like enrichment planting are puny alternatives for what the ubiquitous swiddens can do, provided revised policies allow them to. Failing that, densities of senescent Brazil nut stands will continue to decrease until hardly justifying the ?sustainable alternative to deforestation? discourse.Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.PAULO MARCELO VERAS DE PAIVA, CPAF-AP.PAIVA, P. M. V. de2020-01-24T00:36:58Z2020-01-24T00:36:58Z2020-01-2320192020-01-27T11:11:11ZResumo em anais e proceedingsinfo:eu-repo/semantics/publishedVersionPesquisa Florestal Brasileira, v. 39, e201902043, p. 47-48, 2019.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119290enginfo: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:EMBRAPA2020-01-24T00:37:05Zoai:www.alice.cnptia.embrapa.br:doc/1119290Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542020-01-24T00:37:05Repositório 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 Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
title Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
spellingShingle Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
PAIVA, P. M. V. de
Castanha
Regeneração Natural
title_short Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
title_full Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
title_fullStr Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
title_full_unstemmed Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
title_sort Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps.
author PAIVA, P. M. V. de
author_facet PAIVA, P. M. V. de
author_role author
dc.contributor.none.fl_str_mv PAULO MARCELO VERAS DE PAIVA, CPAF-AP.
dc.contributor.author.fl_str_mv PAIVA, P. M. V. de
dc.subject.por.fl_str_mv Castanha
Regeneração Natural
topic Castanha
Regeneração Natural
description Considered a cornerstone species in Amazonian forest conservation strategies, the Brazil nut enjoys a unique status. It is immune to cutting and most of its distribution is under some category of protected area. Nonetheless, both nut-gatherers and researchers consistently report insufficient natural regeneration levels and the population decline of high-density stands, including at strict nature reserves. The initial hypothesis of seed overharvesting lacks consensus as later studies identified the scarcity of canopy gaps at mature forests as the main cause for the recruitment failure of this gap-loving species. This observation supports the anthropogenic origin hypothesis and is consistent with the abundant recruitment observed in traditional swiddens, where the regeneration density increases with the number of cultivation cycles. This is due to a number of factors, including the scatterhoarder habit of the natural disperser, gap-clearance frequency, species? resistance to fire and remarkable re-sprouting capability. Nut-gatherers intuitively understand the role of swiddens for the maintenance and expansion of high-density Brazil nut stands, and many voluntarily protect their spontaneously enriched fallows from further cultivation cycles. Surprisingly, the very conservation policies end up hindering such traditional management practices. For example, when forbidding nutgatherers/swidden-farmers from clearing new plots of forest in exchange for those fallows they chose to protect. Expensive, labor-intensive and unpopular recommendations like enrichment planting are puny alternatives for what the ubiquitous swiddens can do, provided revised policies allow them to. Failing that, densities of senescent Brazil nut stands will continue to decrease until hardly justifying the ?sustainable alternative to deforestation? discourse.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020-01-24T00:36:58Z
2020-01-24T00:36:58Z
2020-01-23
2020-01-27T11:11:11Z
dc.type.driver.fl_str_mv Resumo em anais e proceedings
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
status_str publishedVersion
dc.identifier.uri.fl_str_mv Pesquisa Florestal Brasileira, v. 39, e201902043, p. 47-48, 2019.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119290
identifier_str_mv Pesquisa Florestal Brasileira, v. 39, e201902043, p. 47-48, 2019.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119290
dc.language.iso.fl_str_mv eng
language eng
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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)
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