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Registro Completo |
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Biblioteca(s): |
Embrapa Trigo. |
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Data corrente: |
08/04/2008 |
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Data da última atualização: |
08/04/2008 |
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Autoria: |
FRIZZONE, J. A.; OLITTA, A. F. L. |
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Título: |
Efeitos da supressão de água em diferentes fases do crescimento na produção do trigo. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Engenharia Rural, Piracicaba, v. 1., n. 1, p. 23-36, jul. 1990. |
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Idioma: |
Português |
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Palavras-Chave: |
Déficit hídrico. |
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Thesagro: |
Fisiologia Vegetal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00463naa a2200145 a 4500
001 1841090
005 2008-04-08
008 1990 bl --- 0-- u #d
100 1 $aFRIZZONE, J. A.
245 $aEfeitos da supressão de água em diferentes fases do crescimento na produção do trigo.
260 $c1990
650 $aFisiologia Vegetal
653 $aDéficit hídrico
700 1 $aOLITTA, A. F. L.
773 $tEngenharia Rural, Piracicaba$gv. 1., n. 1, p. 23-36, jul. 1990.
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Registro original: |
Embrapa Trigo (CNPT) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amapá. |
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Data corrente: |
23/01/2020 |
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Data da última atualização: |
06/08/2020 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
PAIVA, P. M. V. de. |
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Afiliação: |
PAULO MARCELO VERAS DE PAIVA, CPAF-AP. |
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Título: |
Threatened by conservation: addressing policy gaps for the maintenance of high-density Brazil nut tree clumps. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Pesquisa Florestal Brasileira, v. 39, e201902043, p. 47-48, 2019. |
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Idioma: |
Inglês |
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Notas: |
Edição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba. |
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Conteúdo: |
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. MenosConsidered 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 pro... Mostrar Tudo |
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Thesagro: |
Castanha; Regeneração Natural. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/209541/1/CPAF-AP-2019-Threatened-by-conservation-addressing-policy.pdf
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Marc: |
LEADER 02420nam a2200145 a 4500
001 2119290
005 2020-08-06
008 2019 bl uuuu u00u1 u #d
100 1 $aPAIVA, P. M. V. de
245 $aThreatened by conservation$baddressing policy gaps for the maintenance of high-density Brazil nut tree clumps.$h[electronic resource]
260 $aPesquisa Florestal Brasileira, v. 39, e201902043, p. 47-48, 2019.$c2019
500 $aEdição especial dos resumos do IUFRO World Congress, 25., 2019, Curitiba.
520 $aConsidered 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.
650 $aCastanha
650 $aRegeneração Natural
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Embrapa Amapá (CPAF-AP) |
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