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| Registros recuperados : 273 | |
| 173. |  | AMARAL, E. F. do; SCHAEFER, C. E.; CAVALCANTE, L. M.; REZENDE, S. B. de; LANI, J. L. Bases geológicas e geomorfológicas da formação e distribuição dos solos no estado do Acre. In: SOUZA, C. M. de; ARAÚJO, E. A. de; MEDEIROS, M. da F. S. T.; MAGALHÃES, A. de A (org.). Recursos naturais: geologia, geomorfologia e solos do Acre. Rio Branco, AC: SEMA, 2010. p. 44-62. (Coleção temática do ZEE, v. 2).| Biblioteca(s): Embrapa Acre. |
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| 175. | | MELO, A. W. F. de; AMARAL, E. F. do; LUNZ, A. M. P.; PEREIRA, J. B. M. Correlação de parâmetros fisiográficos com os teores ideais de nutrientes no Projeto Reca, Nova Califórnia, Rondônia. In: CONGRESSO BRASILEIRO DE SISTEMAS AGROFLORESTAIS, 3., 2000, Manaus. Sistemas agroflorestais: manejando a biodiversidade e compondo a paisagem rural: resumos expandidos. Manaus: Embrapa Amazônia Ocidental, 2000. p. 118-120. (Embrapa Amazônia Ocidental. Documentos, 7).| Biblioteca(s): Embrapa Acre. |
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| 176. | | FRANKE, I. L.; OLIVEIRA, L. C. de; AMARAL, E. F. do; THOMAZINI, M. J.; SANTOS, J. C. dos. Effect of the process of forest fragmentation in the sustainability of some ecosystems outlying the highways axes in the acrean southeast. In: INTERNATIONAL CONFERENCE ON BIODIVERSITY, 2., 1999, Belo Horizonte, MG. Programme and abstracts. Belo Horizonte: FAPEMIG, 1999. P. 116. p. 209.| Biblioteca(s): Embrapa Acre. |
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| 177. | | MATUK, F. A.; BEHAGEL, J. H.; SIMAS, F. N. B.; AMARAL, E. F. do; HAVERROTH, M.; TURNHOUT, E. Including diverse knowledges and worldviews in environmental assessment and planning: the Brazilian Amazon Kaxinawá Nova Olinda Indigenous Land case. Ecosystems and People, v. 16, n. 1, p. 95-113, 2020.| Biblioteca(s): Embrapa Acre. |
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| 178. | | CORDEIRO, D. G.; AMARAL, E. F. do; BATISTA, E. M.; OLIVEIRA, T. K. de; MELO, A. W. F. de. Caracterização físico-química dos solos em áreas de ocorrência natural de pimenta longa (Piper hispidinervum). In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 27., 1999, Brasília, DF. Anais... Brasília, DF: Embrapa-CPAC: UNB, 1999. 1 p. 1 CD ROM.| Biblioteca(s): Embrapa Acre. |
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| 179. | | ARAUJO, E. A. de; AMARAL, E. F. do; OLIVEIRA FILHO, L. M. de; SILVEIRA, A. M. de P. A fertilidade do solo como indicador de degradação agrícola de solos tropicais: o caso do PED Senador Guiomard e Bujari. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 23.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 7.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 5.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 2., 1998, Caxambu, MG. Interrelação fertilidade, biologia do solo e nutrição de plantas: consolidando um paradigma: resumos. Lavras: UFLA, 1998. p. 72. R072.| Biblioteca(s): Embrapa Acre. |
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| 180. | | CORDEIRO, D. G.; AMARAL, E. F. do; MELO, A. W. F. de; OLIVEIRA, T. K. de; SILVA, J. C. da. Levantamento, caracterização e manejo de solos em diferentes sistemas de uso da terra em Rio Branco, Acre. Rio Branco, AC: Embrapa Acre, 1998. 3 p. (Embrapa Acre. Pesquisa em andamento, 135).| Biblioteca(s): Embrapa Acre. |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
21/08/2006 |
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Data da última atualização: |
28/11/2022 |
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Autoria: |
LEWIS, S. L.; PHILLIPS, O. L.; BAKER, T. R.; LLOYD, J.; MALHI, Y.; ALMEIDA, S.; HIGUCHI, N.; LAURANCE, W. F.; NEILL, D. A.; SILVA, J. N. M.; TERBORGH, J.; LEZAMA, A. T.; VÁSQUEZ MARTÍNEZ, R.; BROWN, S.; CHAVE, J.; KUEBLER, C.; NÚÑEZ VARGAS, P.; VINCETI, B. |
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Afiliação: |
JOSÉ NATALINO MACEDO SILVA, CPATU. |
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Título: |
Concerted changes in tropical forest structure and dynamics: evidence from 50 South American long-term plots. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Philippine Transactions of Royal Society of London, B, v. 359, n. 1443, p. 421-436, 2004. |
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DOI: |
10.1098/rstb.2003.1431 |
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Idioma: |
Inglês |
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Conteúdo: |
Several widespread changes in the ecology of old?growth tropical forests have recently been documented for the late twentieth century, in particular an increase in stem turnover (pan?tropical), and an increase in above?ground biomass (neotropical). Whether these changes are synchronous and whether changes in growth are also occurring is not known. We analysed stand?level changes within 50 long?term monitoring plots from across South America spanning 1971?2002. We show that: (i) basal area (BA: sum of the cross?sectional areas of all trees in a plot) increased significantly over time (by 0.10 ±; 0.04 m2 ha−1 yr−1, mean ± 95%CI) as did both (ii) stand?level BA growth rates (sum of the increments of BA of surviving trees and BA of new trees that recruited into a plot); and (iii) stand?level BA mortality rates (sum of the cross?sectional areas of all trees that died in a plot). Similar patterns were observed on a per?stem basis: (i) stem density (number of stems per hectare; 1 hectare is 104 m2) increased significantly over time (0.94 ± 0.63 stems ha−1 yr−1); as did both (ii) stem recruitment rates; and (iii) stem mortality rates. In relative terms, the pools of BA and stem density increased by 0.38 ± 0.15% and 0.18 ± 0.12% yr−1, respectively. The fluxes into and out of these pools?stand?level BA growth, stand?level BA mortality, stem recruitment and stem mortality rates?increased, in relative terms, by an order of magnitude more. The gain terms (BA growth, stem recruitment) consistently exceeded the loss terms (BA loss, stem mortality) throughout the period, suggesting that whatever process is driving these changes was already acting before the plot network was established. Large long?term increases in stand?level BA growth and simultaneous increases in stand BA and stem density imply a continent?wide increase in resource availability which is increasing net primary productivity and altering forest dynamics. Continent?wide changes in incoming solar radiation, and increases in atmospheric concentrations of CO2 and air temperatures may have increased resource supply over recent decades, thus causing accelerated growth and increased dynamism across the world's largest tract of tropical forest. MenosSeveral widespread changes in the ecology of old?growth tropical forests have recently been documented for the late twentieth century, in particular an increase in stem turnover (pan?tropical), and an increase in above?ground biomass (neotropical). Whether these changes are synchronous and whether changes in growth are also occurring is not known. We analysed stand?level changes within 50 long?term monitoring plots from across South America spanning 1971?2002. We show that: (i) basal area (BA: sum of the cross?sectional areas of all trees in a plot) increased significantly over time (by 0.10 ±; 0.04 m2 ha−1 yr−1, mean ± 95%CI) as did both (ii) stand?level BA growth rates (sum of the increments of BA of surviving trees and BA of new trees that recruited into a plot); and (iii) stand?level BA mortality rates (sum of the cross?sectional areas of all trees that died in a plot). Similar patterns were observed on a per?stem basis: (i) stem density (number of stems per hectare; 1 hectare is 104 m2) increased significantly over time (0.94 ± 0.63 stems ha−1 yr−1); as did both (ii) stem recruitment rates; and (iii) stem mortality rates. In relative terms, the pools of BA and stem density increased by 0.38 ± 0.15% and 0.18 ± 0.12% yr−1, respectively. The fluxes into and out of these pools?stand?level BA growth, stand?level BA mortality, stem recruitment and stem mortality rates?increased, in relative terms, by an order of magnitude more. The gain terms (BA... Mostrar Tudo |
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Palavras-Chave: |
Brasil. |
|
Thesagro: |
Biomassa; Carbono; Desenvolvimento Florestal; Floresta Tropical; Mortalidade. |
|
Thesaurus NAL: |
Amazonia. |
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Categoria do assunto: |
-- |
|
Marc: |
LEADER 03453naa a2200421 a 4500
001 1408525
005 2022-11-28
008 2004 bl uuuu u00u1 u #d
024 7 $a10.1098/rstb.2003.1431$2DOI
100 1 $aLEWIS, S. L.
245 $aConcerted changes in tropical forest structure and dynamics$bevidence from 50 South American long-term plots.$h[electronic resource]
260 $c2004
520 $aSeveral widespread changes in the ecology of old?growth tropical forests have recently been documented for the late twentieth century, in particular an increase in stem turnover (pan?tropical), and an increase in above?ground biomass (neotropical). Whether these changes are synchronous and whether changes in growth are also occurring is not known. We analysed stand?level changes within 50 long?term monitoring plots from across South America spanning 1971?2002. We show that: (i) basal area (BA: sum of the cross?sectional areas of all trees in a plot) increased significantly over time (by 0.10 ±; 0.04 m2 ha−1 yr−1, mean ± 95%CI) as did both (ii) stand?level BA growth rates (sum of the increments of BA of surviving trees and BA of new trees that recruited into a plot); and (iii) stand?level BA mortality rates (sum of the cross?sectional areas of all trees that died in a plot). Similar patterns were observed on a per?stem basis: (i) stem density (number of stems per hectare; 1 hectare is 104 m2) increased significantly over time (0.94 ± 0.63 stems ha−1 yr−1); as did both (ii) stem recruitment rates; and (iii) stem mortality rates. In relative terms, the pools of BA and stem density increased by 0.38 ± 0.15% and 0.18 ± 0.12% yr−1, respectively. The fluxes into and out of these pools?stand?level BA growth, stand?level BA mortality, stem recruitment and stem mortality rates?increased, in relative terms, by an order of magnitude more. The gain terms (BA growth, stem recruitment) consistently exceeded the loss terms (BA loss, stem mortality) throughout the period, suggesting that whatever process is driving these changes was already acting before the plot network was established. Large long?term increases in stand?level BA growth and simultaneous increases in stand BA and stem density imply a continent?wide increase in resource availability which is increasing net primary productivity and altering forest dynamics. Continent?wide changes in incoming solar radiation, and increases in atmospheric concentrations of CO2 and air temperatures may have increased resource supply over recent decades, thus causing accelerated growth and increased dynamism across the world's largest tract of tropical forest.
650 $aAmazonia
650 $aBiomassa
650 $aCarbono
650 $aDesenvolvimento Florestal
650 $aFloresta Tropical
650 $aMortalidade
653 $aBrasil
700 1 $aPHILLIPS, O. L.
700 1 $aBAKER, T. R.
700 1 $aLLOYD, J.
700 1 $aMALHI, Y.
700 1 $aALMEIDA, S.
700 1 $aHIGUCHI, N.
700 1 $aLAURANCE, W. F.
700 1 $aNEILL, D. A.
700 1 $aSILVA, J. N. M.
700 1 $aTERBORGH, J.
700 1 $aLEZAMA, A. T.
700 1 $aVÁSQUEZ MARTÍNEZ, R.
700 1 $aBROWN, S.
700 1 $aCHAVE, J.
700 1 $aKUEBLER, C.
700 1 $aNÚÑEZ VARGAS, P.
700 1 $aVINCETI, B.
773 $tPhilippine Transactions of Royal Society of London, B$gv. 359, n. 1443, p. 421-436, 2004.
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