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Registro Completo |
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
05/10/2020 |
Data da última atualização: |
06/10/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BONGIOLO, E. S.; KAINER, K. A.; CROPPER, W.; STAUDHAMMER, C. L.; WADT, L. H. de O. |
Afiliação: |
Eduardo S. Bongiolo, University of Florida; Karen A. Kainer, University of Florida; Wendell Cropper, University of Florida; Christina L. Staudhammer, University of Alabama; LUCIA HELENA DE OLIVEIRA WADT, CPAF-RO. |
Título: |
Swidden fallow management to increase landscape-level Brazil nut productivity. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Forest Ecology and Management, v. 464, n. 118019, 2020. |
ISSN: |
0378-1127 |
Idioma: |
Inglês |
Conteúdo: |
Brazil nut (Bertholletia excelsa Bonpl.) is considered the cornerstone non-timber species of Amazonian conservation. Nuts (or seeds) of this massive tree are harvested by local people living in and near old growth forests, supporting local livelihoods and regional economies. Secondary forests, however, particularly plots previously used for agriculture (swidden fallows), present better B. excelsa seedling and sapling recruitment than mature forest. This study examines the extent to which forest residents could increase nut productivity by allowing their fallows to grow into Brazil nut rich forests. We conducted B. excelsa inventories in the Brazilian state of Acre in abandoned swidden fallows of different ages. We also conducted interviews to determine landowner perspectives on the fallow potential for increasing nut production. An individual-based model, based on in-situ inventories and primary and secondary datasets from prior fieldwork, simulated growth, survivorship and production from the 250 inventoried trees in 18 fallows of varying sizes (from 0.41 to 4.18 ha) and different regrowth stages (12 to 60 years old). These simulation model predictions showed that after 10 years, 2.4% of existing trees would be productive, with an average of 68.6 ± 21.5 fruits per reproductively mature tree in the four fallows that most quickly yielded productive trees. By the final projected time interval (40 years), predictions suggest all fallows will produce fruits with cumulative production averaging 1475 ± 359 fruits ha?1, suggesting an increase in landowner income of US$55.1 ± 13.4 per hectare of fallow. Our simulation model is the first to explore fruit productivity of Brazil nut in secondary forest. It likely underpredicts B. excelsa growth and nut production, considering that swidden fallows provide better resource availability than the forest-derived datasets we used to construct the model equations. In conclusion, our findings support previous research that suggests that higher B. excelsa recruitment rates observed in abandoned swidden fallows could indeed translate into greater adult densities and thus potentially, higher nut production – a conclusion mirrored by most participant landowners. MenosBrazil nut (Bertholletia excelsa Bonpl.) is considered the cornerstone non-timber species of Amazonian conservation. Nuts (or seeds) of this massive tree are harvested by local people living in and near old growth forests, supporting local livelihoods and regional economies. Secondary forests, however, particularly plots previously used for agriculture (swidden fallows), present better B. excelsa seedling and sapling recruitment than mature forest. This study examines the extent to which forest residents could increase nut productivity by allowing their fallows to grow into Brazil nut rich forests. We conducted B. excelsa inventories in the Brazilian state of Acre in abandoned swidden fallows of different ages. We also conducted interviews to determine landowner perspectives on the fallow potential for increasing nut production. An individual-based model, based on in-situ inventories and primary and secondary datasets from prior fieldwork, simulated growth, survivorship and production from the 250 inventoried trees in 18 fallows of varying sizes (from 0.41 to 4.18 ha) and different regrowth stages (12 to 60 years old). These simulation model predictions showed that after 10 years, 2.4% of existing trees would be productive, with an average of 68.6 ± 21.5 fruits per reproductively mature tree in the four fallows that most quickly yielded productive trees. By the final projected time interval (40 years), predictions suggest all fallows will produce fruits with cumulative produ... Mostrar Tudo |
Palavras-Chave: |
Acre; Amazônia Ocidental; Castanha do brasil; Produto florestal não madeireiro (PFNM); Swidden fallow; Western Amazon. |
Thesagro: |
Bertholletia Excelsa; Castanha do Para; Pousio; Pratica Cultural; Rendimento. |
Thesaurus Nal: |
Brazil nuts; Crop yield; Nontimber forest products; Plant cultural practices; Shifting cultivation. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216397/1/cpafro-18445.pdf
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Marc: |
LEADER 03306naa a2200373 a 4500 001 2125269 005 2020-10-06 008 2020 bl uuuu u00u1 u #d 022 $a0378-1127 100 1 $aBONGIOLO, E. S. 245 $aSwidden fallow management to increase landscape-level Brazil nut productivity.$h[electronic resource] 260 $c2020 520 $aBrazil nut (Bertholletia excelsa Bonpl.) is considered the cornerstone non-timber species of Amazonian conservation. Nuts (or seeds) of this massive tree are harvested by local people living in and near old growth forests, supporting local livelihoods and regional economies. Secondary forests, however, particularly plots previously used for agriculture (swidden fallows), present better B. excelsa seedling and sapling recruitment than mature forest. This study examines the extent to which forest residents could increase nut productivity by allowing their fallows to grow into Brazil nut rich forests. We conducted B. excelsa inventories in the Brazilian state of Acre in abandoned swidden fallows of different ages. We also conducted interviews to determine landowner perspectives on the fallow potential for increasing nut production. An individual-based model, based on in-situ inventories and primary and secondary datasets from prior fieldwork, simulated growth, survivorship and production from the 250 inventoried trees in 18 fallows of varying sizes (from 0.41 to 4.18 ha) and different regrowth stages (12 to 60 years old). These simulation model predictions showed that after 10 years, 2.4% of existing trees would be productive, with an average of 68.6 ± 21.5 fruits per reproductively mature tree in the four fallows that most quickly yielded productive trees. By the final projected time interval (40 years), predictions suggest all fallows will produce fruits with cumulative production averaging 1475 ± 359 fruits ha?1, suggesting an increase in landowner income of US$55.1 ± 13.4 per hectare of fallow. Our simulation model is the first to explore fruit productivity of Brazil nut in secondary forest. It likely underpredicts B. excelsa growth and nut production, considering that swidden fallows provide better resource availability than the forest-derived datasets we used to construct the model equations. In conclusion, our findings support previous research that suggests that higher B. excelsa recruitment rates observed in abandoned swidden fallows could indeed translate into greater adult densities and thus potentially, higher nut production – a conclusion mirrored by most participant landowners. 650 $aBrazil nuts 650 $aCrop yield 650 $aNontimber forest products 650 $aPlant cultural practices 650 $aShifting cultivation 650 $aBertholletia Excelsa 650 $aCastanha do Para 650 $aPousio 650 $aPratica Cultural 650 $aRendimento 653 $aAcre 653 $aAmazônia Ocidental 653 $aCastanha do brasil 653 $aProduto florestal não madeireiro (PFNM) 653 $aSwidden fallow 653 $aWestern Amazon 700 1 $aKAINER, K. A. 700 1 $aCROPPER, W. 700 1 $aSTAUDHAMMER, C. L. 700 1 $aWADT, L. H. de O. 773 $tForest Ecology and Management$gv. 464, n. 118019, 2020.
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Embrapa Rondônia (CPAF-RO) |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Milho e Sorgo. |
Data corrente: |
15/06/2000 |
Data da última atualização: |
09/06/2018 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ANDRADE, R. V.; NETTO, D. A. M.; SANTOS, M. X.; SOUZA, F. R. S.; LEITE, C. E. P. |
Afiliação: |
DEA ALECIA MARTINS NETTO, CNPMS. |
Título: |
Banco ativo de germoplasma de milho. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: CONGRESSO NACIONAL DE MILHO E SORGO, 23., 2000, Uberlândia. A inovação tecnológica e a competividade no contexto dos mercados globalizados: resumos. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Uberlândia: Universidade Federal de Uberlândia, 2000. p. 55. |
Idioma: |
Português |
Palavras-Chave: |
Caracterizacao; Characterization; Intercambio; Maize; Regeneration; Variabilidade genética. |
Thesagro: |
Banco de Germoplasma; Germoplasma; Milho; Regeneração; Zea Mays. |
Thesaurus NAL: |
germplasm. |
Categoria do assunto: |
-- F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/45366/1/Banco-ativo-1.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/101776/1/5423.pdf
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Marc: |
LEADER 00990nam a2200289 a 4500 001 1483811 005 2018-06-09 008 2000 bl uuuu u00u1 u #d 100 1 $aANDRADE, R. V. 245 $aBanco ativo de germoplasma de milho.$h[electronic resource] 260 $aIn: CONGRESSO NACIONAL DE MILHO E SORGO, 23., 2000, Uberlândia. A inovação tecnológica e a competividade no contexto dos mercados globalizados: resumos. Sete Lagoas: ABMS: Embrapa Milho e Sorgo; Uberlândia: Universidade Federal de Uberlândia, 2000. p. 55.$c2000 650 $agermplasm 650 $aBanco de Germoplasma 650 $aGermoplasma 650 $aMilho 650 $aRegeneração 650 $aZea Mays 653 $aCaracterizacao 653 $aCharacterization 653 $aIntercambio 653 $aMaize 653 $aRegeneration 653 $aVariabilidade genética 700 1 $aNETTO, D. A. M. 700 1 $aSANTOS, M. X. 700 1 $aSOUZA, F. R. S. 700 1 $aLEITE, C. E. P.
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Embrapa Milho e Sorgo (CNPMS) |
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