| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
08/07/2005 |
|
Data da última atualização: |
02/12/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
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. |
|
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. |
|
Título: |
Increasing biomass in Amazonian forest plots. |
|
Ano de publicação: |
2004 |
|
Fonte/Imprenta: |
Philosophical Transactions of the Royal Society of London. B, v. 359, n. 1443, p. 353-365, Mar. 2004. |
|
Descrição Física: |
il. |
|
DOI: |
10.1098/rstb.2003.1422 |
|
Idioma: |
Inglês |
|
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 |
|
Thesagro: |
Biomassa; Carbono; Floresta Tropical. |
|
Thesaurus Nal: |
Amazonia. |
|
Categoria do assunto: |
-- |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Gado de Leite; Embrapa Pecuária Sudeste. |
|
Data corrente: |
17/12/2014 |
|
Data da última atualização: |
05/02/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
MOKRY, F. B.; BUZANSKAS, M. E.; MUDADU, M. de A.; GROSSI, D. do A.; HIGA, R. H.; VENTURA, R. V.; LIMA, A. O. de; SARGOLZAEI, M.; MEIRELLES, S. L. C.; SCHENKEL, F. S.; SILVA, M. V. G. B.; NICIURA, S. C. M.; ALENCAR, M. M. de; MINARI, D. P.; REGITANO, L. C. de A. |
|
Afiliação: |
MARCOS VINICIUS GUALBERTO B SILVA, CNPGL. |
|
Título: |
Linkage disequilibrium and haplotype block structure in a composite beef cattle breed. |
|
Ano de publicação: |
2014 |
|
Fonte/Imprenta: |
BMC Genomics, London v. 15, S6, p. 1-9, 2014. |
|
DOI: |
10.1186/1471-2164-15-S7-S6 |
|
Idioma: |
Inglês |
|
Notas: |
Suppl 7. |
|
Conteúdo: |
Abstract. Background: The development of linkage disequilibrium (LD) maps and the characterization of haplotype block structure at the population level are useful parameters for guiding genome wide association (GWA) studies, and for understanding the nature of non-linear association between phenotypes and genes. The elucidation of haplotype block structure can reduce the information of several single nucleotide polymorphisms (SNP) into the information of a haplotype block, reducing the number of SNPs in a coherent way for consideration in GWA and genomic selection studies. Results: The maximum average LD, measured by r2 varied between 0.33 to 0.40 at a distance of < 2.5 kb, and the minimum average values of r2 varied between 0.05 to 0.07 at distances ranging from 400 to 500 kb, clearly showing that the average r2 reduced with the increase in SNP pair distances. The persistence of LD phase showed higher values at shorter genomic distances, decreasing with the increase in physical distance, varying from 0.96 at a distance of < 2.5 kb to 0.66 at a distance from 400 to 500 kb. A total of 78% of all SNPs were clustered into haplotype blocks, covering 1,57 Mb of the total autosomal genome size. Conclusions: This study presented the first high density linkage disequilibrium map and haplotype block structure for a composite beef cattle population, and indicates that the high density SNP panel over 700 k can be used for genomic selection implementation and GWA studies for Canchim beef cattle. MenosAbstract. Background: The development of linkage disequilibrium (LD) maps and the characterization of haplotype block structure at the population level are useful parameters for guiding genome wide association (GWA) studies, and for understanding the nature of non-linear association between phenotypes and genes. The elucidation of haplotype block structure can reduce the information of several single nucleotide polymorphisms (SNP) into the information of a haplotype block, reducing the number of SNPs in a coherent way for consideration in GWA and genomic selection studies. Results: The maximum average LD, measured by r2 varied between 0.33 to 0.40 at a distance of < 2.5 kb, and the minimum average values of r2 varied between 0.05 to 0.07 at distances ranging from 400 to 500 kb, clearly showing that the average r2 reduced with the increase in SNP pair distances. The persistence of LD phase showed higher values at shorter genomic distances, decreasing with the increase in physical distance, varying from 0.96 at a distance of < 2.5 kb to 0.66 at a distance from 400 to 500 kb. A total of 78% of all SNPs were clustered into haplotype blocks, covering 1,57 Mb of the total autosomal genome size. Conclusions: This study presented the first high density linkage disequilibrium map and haplotype block structure for a composite beef cattle population, and indicates that the high density SNP panel over 700 k can be used for genomic selection implementation and GWA studies for Canchim bee... Mostrar Tudo |
|
Palavras-Chave: |
Composite; Desequilíbrio de ligação; Genome wide association studies; Halplotype block; Linjage disequilibirium; Polimorfismo de nucleotídeo único. |
|
Thesagro: |
Gado de corte. |
|
Thesaurus NAL: |
Beef cattle; Linkage disequilibrium; Single nucleotide polymorphism. |
|
Categoria do assunto: |
G Melhoramento Genético |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/119863/1/MOKRY.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114007/1/PROCI-2104.00140.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/114252/1/1471-2164-15-S7-S6.pdf
|
|
Marc: |
LEADER 02809naa a2200433 a 4500
001 2006604
005 2024-02-05
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1186/1471-2164-15-S7-S6$2DOI
100 1 $aMOKRY, F. B.
245 $aLinkage disequilibrium and haplotype block structure in a composite beef cattle breed.$h[electronic resource]
260 $c2014
500 $aSuppl 7.
520 $aAbstract. Background: The development of linkage disequilibrium (LD) maps and the characterization of haplotype block structure at the population level are useful parameters for guiding genome wide association (GWA) studies, and for understanding the nature of non-linear association between phenotypes and genes. The elucidation of haplotype block structure can reduce the information of several single nucleotide polymorphisms (SNP) into the information of a haplotype block, reducing the number of SNPs in a coherent way for consideration in GWA and genomic selection studies. Results: The maximum average LD, measured by r2 varied between 0.33 to 0.40 at a distance of < 2.5 kb, and the minimum average values of r2 varied between 0.05 to 0.07 at distances ranging from 400 to 500 kb, clearly showing that the average r2 reduced with the increase in SNP pair distances. The persistence of LD phase showed higher values at shorter genomic distances, decreasing with the increase in physical distance, varying from 0.96 at a distance of < 2.5 kb to 0.66 at a distance from 400 to 500 kb. A total of 78% of all SNPs were clustered into haplotype blocks, covering 1,57 Mb of the total autosomal genome size. Conclusions: This study presented the first high density linkage disequilibrium map and haplotype block structure for a composite beef cattle population, and indicates that the high density SNP panel over 700 k can be used for genomic selection implementation and GWA studies for Canchim beef cattle.
650 $aBeef cattle
650 $aLinkage disequilibrium
650 $aSingle nucleotide polymorphism
650 $aGado de corte
653 $aComposite
653 $aDesequilíbrio de ligação
653 $aGenome wide association studies
653 $aHalplotype block
653 $aLinjage disequilibirium
653 $aPolimorfismo de nucleotídeo único
700 1 $aBUZANSKAS, M. E.
700 1 $aMUDADU, M. de A.
700 1 $aGROSSI, D. do A.
700 1 $aHIGA, R. H.
700 1 $aVENTURA, R. V.
700 1 $aLIMA, A. O. de
700 1 $aSARGOLZAEI, M.
700 1 $aMEIRELLES, S. L. C.
700 1 $aSCHENKEL, F. S.
700 1 $aSILVA, M. V. G. B.
700 1 $aNICIURA, S. C. M.
700 1 $aALENCAR, M. M. de
700 1 $aMINARI, D. P.
700 1 $aREGITANO, L. C. de A.
773 $tBMC Genomics, London$gv. 15, S6, p. 1-9, 2014.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
