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 | Acesso ao texto completo restrito à biblioteca da Embrapa Territorial. Para informações adicionais entre em contato com cnpm.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
19/02/2013 |
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Data da última atualização: |
10/06/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
STARK, S. C.; LEITOLD, V.; WU, J. L.; HUNTER, M. O.; CASTILHO, C. V. de; COSTA, F. R. C.; MCMAHON, S. M.; PARKER, G. G.; SHIMABUKURO, M. T.; LEFSKY, M. A.; KELLER, M.; ALVES, L. F.; SCHIETTI, J.; SHIMABUKURO, Y. E.; BRANDÃO, D. O.; WOODCOCK, T. K.; HIGUCHI, N.; CAMARGO, P. B. DE; OLIVEIRA JUNIOR, R. C. de; SALESKA, S. R. |
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Afiliação: |
SCOTT C. STARK, UNIVERSITY OF ARIZONA; VERONIKA LEITOLD, UNIVERSITY OF ARIZONA; JIN L. WU, UNIVERSITY OF ARIZONA; MARIA O. HUNTER, UNIVERSITY OF NEW HAMPSHIRE; CAROLINA VOLKMER DE CASTILHO, CPAF-RR; FLÁVIA R. C. COSTA, INPA; SEAN M. MCMAHON, SMITHSONIAN TROPICAL RESEARCH INSTITUTE; GEOFFREY G. PARKER, SMITHSONIAN ENVIRONMENTAL RESEARCH CENTER; MÔNICA TAKAKO SIMABUKURO, INPE; MICHAEL A. LEFSKY, COLORADO STATE UNIVERSITY; MICHAEL KELLER, USDA FOREST SERVICE/EMBRAPA MONITORAMENTO POR SATÉLITE; LUCIANA F. ALVES, INSTITUTO DE BOTÂNICA; JULIANA SCHIETTI, INPA; YOSIO EDEMIR SHIMABUKURO, INPE; DIEGO O. BRANDÃO, INPA; TARA K. WOODCOCK, UNIVERSITY OF ARIZONA; NIRO HIGUCHI, INPA; PLÍNIO B. DE CAMARGO, CENA/USP; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; SCOTT R. SALESKA, UNIVERSITY OF ARIZONA. |
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Título: |
Amazon forest carbon dynamics predicted by profiles of canopy leaf area and light environment. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Ecology Letters, v. 15, n. 12, dez. 2012. |
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Páginas: |
p. 1406-1414. |
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DOI: |
10.1111/j.1461-0248.2012.0186.x |
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Idioma: |
Inglês |
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Notas: |
Artigo publicado por Pesquisador Visitante da Embrapa Monitoramento por Satélite. |
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Conteúdo: |
Tropical forest structural variation across heterogeneous landscapes may control above-ground carbon dynamics. We tested the hypothesis that canopy structure (leaf area and light availability) ? remotely estimated from LiDAR ? control variation in above-ground coarse wood production (biomass growth). Using a statistical model, these factors predicted biomass growth across tree size classes in forest near Manaus, Brazil. The same statistical model, with no parameterisation change but driven by different observed canopy structure, predicted the higher productivity of a site 500 km east. Gap fraction and a metric of vegetation vertical extent and evenness also predicted biomass gains and losses for one-hectare plots. Despite significant site differences in canopy structure and carbon dynamics, the relation between biomass growth and light fell on a unifying curve. This supported our hypothesis, suggesting that knowledge of canopy structure can explain variation in biomass growth over tropical landscapes and improve understanding of ecosystem function. |
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Palavras-Chave: |
Biomass growth; Carbon balance; Gap fraction; Leaf area profiles; Remote sensing of canopy structure. |
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Thesaurus Nal: |
LiDAR. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02422naa a2200457 a 4500
001 1949933
005 2014-06-10
008 2012 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1461-0248.2012.0186.x$2DOI
100 1 $aSTARK, S. C.
245 $aAmazon forest carbon dynamics predicted by profiles of canopy leaf area and light environment.$h[electronic resource]
260 $c2012
300 $ap. 1406-1414.
500 $aArtigo publicado por Pesquisador Visitante da Embrapa Monitoramento por Satélite.
520 $aTropical forest structural variation across heterogeneous landscapes may control above-ground carbon dynamics. We tested the hypothesis that canopy structure (leaf area and light availability) ? remotely estimated from LiDAR ? control variation in above-ground coarse wood production (biomass growth). Using a statistical model, these factors predicted biomass growth across tree size classes in forest near Manaus, Brazil. The same statistical model, with no parameterisation change but driven by different observed canopy structure, predicted the higher productivity of a site 500 km east. Gap fraction and a metric of vegetation vertical extent and evenness also predicted biomass gains and losses for one-hectare plots. Despite significant site differences in canopy structure and carbon dynamics, the relation between biomass growth and light fell on a unifying curve. This supported our hypothesis, suggesting that knowledge of canopy structure can explain variation in biomass growth over tropical landscapes and improve understanding of ecosystem function.
650 $aLiDAR
653 $aBiomass growth
653 $aCarbon balance
653 $aGap fraction
653 $aLeaf area profiles
653 $aRemote sensing of canopy structure
700 1 $aLEITOLD, V.
700 1 $aWU, J. L.
700 1 $aHUNTER, M. O.
700 1 $aCASTILHO, C. V. de
700 1 $aCOSTA, F. R. C.
700 1 $aMCMAHON, S. M.
700 1 $aPARKER, G. G.
700 1 $aSHIMABUKURO, M. T.
700 1 $aLEFSKY, M. A.
700 1 $aKELLER, M.
700 1 $aALVES, L. F.
700 1 $aSCHIETTI, J.
700 1 $aSHIMABUKURO, Y. E.
700 1 $aBRANDÃO, D. O.
700 1 $aWOODCOCK, T. K.
700 1 $aHIGUCHI, N.
700 1 $aCAMARGO, P. B. DE
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aSALESKA, S. R.
773 $tEcology Letters$gv. 15, n. 12, dez. 2012.
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Registro original: |
Embrapa Territorial (CNPM) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
04/10/2000 |
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Data da última atualização: |
09/03/2006 |
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Autoria: |
BRIGHENTI, A. M.; VOLL, E.; ADEGAS, F. S.; GAZZIERO, D. L. P.; VAL, W. M. C. |
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Título: |
Growth analysis of resistant and susceptible wild poinsettia biotypes to ALS inhibitor herbicides. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: INTERNATIONAL WEED SCIENCE CONGRESS, 3., 2000, Foz do Iguassu. Abstracts... Corvallis: International Weed Science Society, 2000. |
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Páginas: |
p.23. |
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Idioma: |
Inglês |
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Conteúdo: |
All natural weed populations regardless of the application of any weedkiller probably contain individual plants (biotypes) which are resistant to herbicides. Persistent herbicide use will expose the weed population to a strong selection pressure which may lead to an increase in the number of surviving resistant individuals in the population. Repeated use of imidazolinone herbicides in continuous no-till soybean selected a herbicide resistant biotype of wild poinsettia (Euphorbia herophylla) in Cafelandia country of Parana State, brazil. A comparative study of growth and development of wild poinsettia resistant and susceptible to ALS (acetolactate synthase) inhibitor herbicides was carried out at Embrapa Soja, Londrina, Parana State, Brazil. The total dry matter, leaf area, shoot dry weight, leaf dry weight, root dry weight and plant height were measured weekly 13 times, starting 14 days after sowing. Data were analyzed with a polynomial exponential function. The response variable for the whole growthperiod was estimated using 95% confidence interval. Relative growth rate, net assimilation rate, leaf weight ratio and specific leaf area decreased with plant ontogeny and behave similarly in both biotypes. The total dry matter of the plants andtheir organs as well as the leaf area and plant height exhibited similar ranges of variability in both biotypes. There no significant differences between biotypes for growth and development characteristics. |
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Palavras-Chave: |
Brasil; Herbicide; Planta daninha; Resistance. |
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Thesagro: |
Herbicida; Resistência. |
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Thesaurus NAL: |
Brazil; weeds. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02272naa a2200277 a 4500
001 1456718
005 2006-03-09
008 2000 bl uuuu u00u1 u #d
100 1 $aBRIGHENTI, A. M.
245 $aGrowth analysis of resistant and susceptible wild poinsettia biotypes to ALS inhibitor herbicides.
260 $c2000
300 $ap.23.
520 $aAll natural weed populations regardless of the application of any weedkiller probably contain individual plants (biotypes) which are resistant to herbicides. Persistent herbicide use will expose the weed population to a strong selection pressure which may lead to an increase in the number of surviving resistant individuals in the population. Repeated use of imidazolinone herbicides in continuous no-till soybean selected a herbicide resistant biotype of wild poinsettia (Euphorbia herophylla) in Cafelandia country of Parana State, brazil. A comparative study of growth and development of wild poinsettia resistant and susceptible to ALS (acetolactate synthase) inhibitor herbicides was carried out at Embrapa Soja, Londrina, Parana State, Brazil. The total dry matter, leaf area, shoot dry weight, leaf dry weight, root dry weight and plant height were measured weekly 13 times, starting 14 days after sowing. Data were analyzed with a polynomial exponential function. The response variable for the whole growthperiod was estimated using 95% confidence interval. Relative growth rate, net assimilation rate, leaf weight ratio and specific leaf area decreased with plant ontogeny and behave similarly in both biotypes. The total dry matter of the plants andtheir organs as well as the leaf area and plant height exhibited similar ranges of variability in both biotypes. There no significant differences between biotypes for growth and development characteristics.
650 $aBrazil
650 $aweeds
650 $aHerbicida
650 $aResistência
653 $aBrasil
653 $aHerbicide
653 $aPlanta daninha
653 $aResistance
700 1 $aVOLL, E.
700 1 $aADEGAS, F. S.
700 1 $aGAZZIERO, D. L. P.
700 1 $aVAL, W. M. C.
773 $tIn: INTERNATIONAL WEED SCIENCE CONGRESS, 3., 2000, Foz do Iguassu. Abstracts... Corvallis: International Weed Science Society, 2000.
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