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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
08/07/2005 |
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Data da última atualização: |
02/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BAKER, T. R.; PHILLIPS, O. L.; MALHI, Y.; ALMEIDA, S.; ARROYO, L.; DI FIORE, A.; ERWIN, T.; HIGUCHI, N.; KILLEEN, T. J.; LAURENCE, S. G.; LAURENCE, W. F.; LEWIS, S. L.; MONTEAGUDO, A.; NEILL, D. A.; NÚNEZ VARGAS, P.; PITMAN, N. C. A.; SILVA, J. N. M.; VÁSQUEZ MARTÍNEZ, R. |
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Afiliação: |
Max-Planck-Institut für Biogeochemie / University of Leeds; University of Leeds; University of Edinburgh; MPEG; Museo Noel Kempff Mercado; New York University; Smithsonian Institution; INPA; Center for Applied Biodiversity Science, Conservation International; Smithsonian Tropical Research Institute; Smithsonian Tropical Research Institute; University of Leeds / University of Edinburgh; Universidad Nacional San Antonio Abad del Cusco / Jardin Botanico de Missouri; Missouri Botanical Garden, c/o Herbario Nacional del Ecuador; Universidad Nacional San Antonio Abad del Cusco; Duke University; JOSÉ NATALINO MACÊDO SILVA, Embrapa Amazônia Oriental; Jardin Botanico de Missouri. |
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Título: |
Increasing biomass in Amazonian forest plots. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Philosophical Transactions of the Royal Society of London. B, v. 359, n. 1443, p. 353-365, Mar. 2004. |
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Descrição Física: |
il. |
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DOI: |
10.1098/rstb.2003.1422 |
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Idioma: |
Inglês |
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Conteúdo: |
A previous study by Phillips et al. of changes in the biomass of permanent sample plots in Amazonian forests was used to infer the presence of a regional carbon sink. However, these results generated a vigorous debate about sampling and methodological issues. Therefore we present a new analysis of biomass change in old?growth Amazonian forest plots using updated inventory data. We find that across 59 sites, the above?ground dry biomass in trees that are more than 10 cm in diameter (AGB) has increased since plot establishment by 1.22 ± 0.43 Mg per hectare per year (ha?1 yr?1), where 1 ha = 104 m2), or 0.98 ± 0.38 Mg ha?1 yr?1 if individual plot values are weighted by the number of hectare years of monitoring. This significant increase is neither confounded by spatial or temporal variation in wood specific gravity, nor dependent on the allometric equation used to estimate AGB. The conclusion is also robust to uncertainty about diameter measurements for problematic trees: for 34 plots in western Amazon forests a significant increase in AGB is found even with a conservative assumption of zero growth for all trees where diameter measurements were made using optical methods and/or growth rates needed to be estimated following fieldwork. Overall, our results suggest a slightly greater rate of net stand?level change than was reported by Phillips et al. Considering the spatial and temporal scale of sampling and associated studies showing increases in forest growth and stem turnover, the results presented here suggest that the total biomass of these plots has on average increased and that there has been a regional?scale carbon sink in old?growth Amazonian forests during the previous two decades. MenosA previous study by Phillips et al. of changes in the biomass of permanent sample plots in Amazonian forests was used to infer the presence of a regional carbon sink. However, these results generated a vigorous debate about sampling and methodological issues. Therefore we present a new analysis of biomass change in old?growth Amazonian forest plots using updated inventory data. We find that across 59 sites, the above?ground dry biomass in trees that are more than 10 cm in diameter (AGB) has increased since plot establishment by 1.22 ± 0.43 Mg per hectare per year (ha?1 yr?1), where 1 ha = 104 m2), or 0.98 ± 0.38 Mg ha?1 yr?1 if individual plot values are weighted by the number of hectare years of monitoring. This significant increase is neither confounded by spatial or temporal variation in wood specific gravity, nor dependent on the allometric equation used to estimate AGB. The conclusion is also robust to uncertainty about diameter measurements for problematic trees: for 34 plots in western Amazon forests a significant increase in AGB is found even with a conservative assumption of zero growth for all trees where diameter measurements were made using optical methods and/or growth rates needed to be estimated following fieldwork. Overall, our results suggest a slightly greater rate of net stand?level change than was reported by Phillips et al. Considering the spatial and temporal scale of sampling and associated studies showing increases in forest growth and stem turnover, ... Mostrar Tudo |
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Thesagro: |
Biomassa; Carbono; Floresta Tropical. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02798naa a2200397 a 4500
001 1406997
005 2022-12-02
008 2004 bl uuuu u00u1 u #d
024 7 $a10.1098/rstb.2003.1422$2DOI
100 1 $aBAKER, T. R.
245 $aIncreasing biomass in Amazonian forest plots.$h[electronic resource]
260 $c2004
300 $cil.
520 $aA previous study by Phillips et al. of changes in the biomass of permanent sample plots in Amazonian forests was used to infer the presence of a regional carbon sink. However, these results generated a vigorous debate about sampling and methodological issues. Therefore we present a new analysis of biomass change in old?growth Amazonian forest plots using updated inventory data. We find that across 59 sites, the above?ground dry biomass in trees that are more than 10 cm in diameter (AGB) has increased since plot establishment by 1.22 ± 0.43 Mg per hectare per year (ha?1 yr?1), where 1 ha = 104 m2), or 0.98 ± 0.38 Mg ha?1 yr?1 if individual plot values are weighted by the number of hectare years of monitoring. This significant increase is neither confounded by spatial or temporal variation in wood specific gravity, nor dependent on the allometric equation used to estimate AGB. The conclusion is also robust to uncertainty about diameter measurements for problematic trees: for 34 plots in western Amazon forests a significant increase in AGB is found even with a conservative assumption of zero growth for all trees where diameter measurements were made using optical methods and/or growth rates needed to be estimated following fieldwork. Overall, our results suggest a slightly greater rate of net stand?level change than was reported by Phillips et al. Considering the spatial and temporal scale of sampling and associated studies showing increases in forest growth and stem turnover, the results presented here suggest that the total biomass of these plots has on average increased and that there has been a regional?scale carbon sink in old?growth Amazonian forests during the previous two decades.
650 $aAmazonia
650 $aBiomassa
650 $aCarbono
650 $aFloresta Tropical
700 1 $aPHILLIPS, O. L.
700 1 $aMALHI, Y.
700 1 $aALMEIDA, S.
700 1 $aARROYO, L.
700 1 $aDI FIORE, A.
700 1 $aERWIN, T.
700 1 $aHIGUCHI, N.
700 1 $aKILLEEN, T. J.
700 1 $aLAURENCE, S. G.
700 1 $aLAURENCE, W. F.
700 1 $aLEWIS, S. L.
700 1 $aMONTEAGUDO, A.
700 1 $aNEILL, D. A.
700 1 $aNÚNEZ VARGAS, P.
700 1 $aPITMAN, N. C. A.
700 1 $aSILVA, J. N. M.
700 1 $aVÁSQUEZ MARTÍNEZ, R.
773 $tPhilosophical Transactions of the Royal Society of London. B$gv. 359, n. 1443, p. 353-365, Mar. 2004.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
16/09/2008 |
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Data da última atualização: |
19/09/2008 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
BARRETO, A. Q.; SILVA, S. X. B.; CARVALHO, C. A. L. de; LEDO, C. A. da S.; NASCIMENTO, A. S. |
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Afiliação: |
Antonio Queiroz Barreto, UNIME; Suely Xavier Brito Silva, UFRB; Carlos Alfredo Lopes de Carvalho, UFRB; Carlos Alberto da Silva Ledo, CNPMF; Antonio Souza Nascimento, CNPMF. |
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Título: |
Contact action of nim extract (Azadirachta indica A. juss) on Tetragonisca angustula Latreille (Hymenoptera: Apoidea) in controlled condition. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 22., 2008, Uberlândia. Ciência, tecnologia e inovação: anais... Uberlândia: Sociedade Entomológica do Brasil, 2008. |
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Idioma: |
Inglês |
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Notas: |
Resumo ID: 721-1. |
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Conteúdo: |
The nim extract appears now as an alternative to the pesticides use in the control of agricultutal curses for your repellent efect, of impact and contact, seeking to minimize the aggressions to the environment. The Jataí (Tetragonisca angustula Latreille) it is a small meliponídeo of shy and inoffensive characteristic responsible for the pollination of a lot species of plants of agricultural and forest importance, whose colonies are constituted by a queen, drones and workers which carry out several functions in the nest, how clean and build structures of the nest, to nurture the youngest individuals, promote ventilation inside the nest, protect the colony and collect food in the field. Toxicology studies and selectivity pesticide to the beneficial insects (Pollinators, natual enemies) they have been constituting an important demand of the agribusiness, tends in view to growing ecological conscience of the society and the demands of the consuming markets for safe victuals. In this context, it was looked for to evaluated the efect of the nim extract (Azadirachta indica Ajuss) on bee workers Jataí (T. angustula), being compared with the efect of a piretroid inseticide in commercial level. The nim extract presentd the same toxicity index that the piretroid insecticide, in the period of evaluation of 24 hours. |
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Palavras-Chave: |
Jataí bees; Natural insecticide; Stinglessbess. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02124naa a2200217 a 4500
001 1637467
005 2008-09-19
008 2008 bl uuuu u00u1 u #d
100 1 $aBARRETO, A. Q.
245 $aContact action of nim extract (Azadirachta indica A. juss) on Tetragonisca angustula Latreille (Hymenoptera$bApoidea) in controlled condition.
260 $c2008
500 $aResumo ID: 721-1.
520 $aThe nim extract appears now as an alternative to the pesticides use in the control of agricultutal curses for your repellent efect, of impact and contact, seeking to minimize the aggressions to the environment. The Jataí (Tetragonisca angustula Latreille) it is a small meliponídeo of shy and inoffensive characteristic responsible for the pollination of a lot species of plants of agricultural and forest importance, whose colonies are constituted by a queen, drones and workers which carry out several functions in the nest, how clean and build structures of the nest, to nurture the youngest individuals, promote ventilation inside the nest, protect the colony and collect food in the field. Toxicology studies and selectivity pesticide to the beneficial insects (Pollinators, natual enemies) they have been constituting an important demand of the agribusiness, tends in view to growing ecological conscience of the society and the demands of the consuming markets for safe victuals. In this context, it was looked for to evaluated the efect of the nim extract (Azadirachta indica Ajuss) on bee workers Jataí (T. angustula), being compared with the efect of a piretroid inseticide in commercial level. The nim extract presentd the same toxicity index that the piretroid insecticide, in the period of evaluation of 24 hours.
653 $aJataí bees
653 $aNatural insecticide
653 $aStinglessbess
700 1 $aSILVA, S. X. B.
700 1 $aCARVALHO, C. A. L. de
700 1 $aLEDO, C. A. da S.
700 1 $aNASCIMENTO, A. S.
773 $tIn: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 22., 2008, Uberlândia. Ciência, tecnologia e inovação: anais... Uberlândia: Sociedade Entomológica do Brasil, 2008.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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