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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Territorial. |
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Data corrente: |
18/03/2014 |
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Data da última atualização: |
19/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ESPÍRITO-SANTO, F. D. B.; GLOOR, M.; KELLER, M.; MALHI, Y.; SAATCHI, S.; NELSON, B.; OLIVEIRA JUNIOR, R. C.; PEREIRA, C.; LLOYD, J.; FROLKING, S.; PALACE, M.; SHIMABUKURO, Y. E.; DUARTE, V.; MONTEAGUDO MENDOZA, A.; LÓPEZ-GONZÁLEZ, G.; BAKER, T. R.; FELDPAUSCH, T. R.; BRIENEN, R. J. W.; ASNER, G. P.; BOYD, D. S.; PHILLIPS, O. L. |
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Afiliação: |
FERNANDO D. B. ESPÍRITO-SANTO, NASA Jet Propulsion Laboratory, California Institute of Technology; MANUEL GLOOR, School of Geography, University of Leeds; MICHAEL KELLER, USDA Forest Service / University of New Hampshire / CNPM; YADVINDER MALHI, University of Oxford; SASSAN SAATCHI, NASA Jet Propulsion Laboratory, California Institute of Technology; BRUCE NELSON, INPA; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; CLEUTON PEREIRA; JON LLOYD, University of Leeds / James Cook University; STEVE FROLKING, University of New Hampshire; MICHAEL PALACE, University of New Hampshire; YOSIO E. SHIMABUKURO, INPE; VALDETE DUARTE, INPE; ABEL MONTEAGUDO MENDOZA, Jardin Botanico de Missouri; GABRIELA LÓPEZ-GONZÁLEZ, University of Leeds; TIM R. BAKER, University of Leeds; TED R. FELDPAUSCH, University of Leeds; ROEL J. W. BRIENEN, University of Leeds; GREGORY P. ASNER, Carnegie Institution for Science; DOREEN S. BOYD, University of Nottingham, University Park; OLIVER L. PHILLIPS, University of Leeds. |
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Título: |
Size and frequency of natural forest disturbances and the Amazon forest carbon balance. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Nature Communications, v. 5, art. n. 3434, 18 Mar. 2014. |
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DOI: |
10.1038/ncomms4434 |
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Idioma: |
Inglês |
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Conteúdo: |
Forest inventory studies in the Amazon indicate a large terrestrial carbon sink. However, field plots may fail to represent forest mortality processes at landscape-scales of tropical forests. Here we characterize the frequency distribution of disturbance events in natural forests from 0.01ha to 2,651ha size throughout Amazonia using a novel combination of forest inventory, airborne lidar and satellite remote sensing data. We find that small-scale mortality events are responsible for aboveground biomass losses of ~1.7PgCy;1 over the entire Amazon region. We also find that intermediate-scale disturbances account for losses of ~0.2PgCy1, and that the largest-scale disturbances as a result of blow-downs only account for losses of ~0.004PgCy1. Simulation of growth and mortality indicates that even when all carbon losses from intermediate and large-scale disturbances are considered, these are outweighed by the net biomass accumulation by tree growth, supporting the inference of an Amazon carbon sink. |
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Palavras-Chave: |
Ciência da Terra. |
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Thesagro: |
Carbono; Clima; Floresta. |
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Thesaurus Nal: |
Amazonia. |
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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/99521/1/ncomms4434.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/101064/1/Espririto-Santo-et-al-Nature-Communications-2014.pdf
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Marc: |
LEADER 02165naa a2200433 a 4500
001 1982675
005 2022-05-19
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1038/ncomms4434$2DOI
100 1 $aESPÍRITO-SANTO, F. D. B.
245 $aSize and frequency of natural forest disturbances and the Amazon forest carbon balance.
260 $c2014
520 $aForest inventory studies in the Amazon indicate a large terrestrial carbon sink. However, field plots may fail to represent forest mortality processes at landscape-scales of tropical forests. Here we characterize the frequency distribution of disturbance events in natural forests from 0.01ha to 2,651ha size throughout Amazonia using a novel combination of forest inventory, airborne lidar and satellite remote sensing data. We find that small-scale mortality events are responsible for aboveground biomass losses of ~1.7PgCy;1 over the entire Amazon region. We also find that intermediate-scale disturbances account for losses of ~0.2PgCy1, and that the largest-scale disturbances as a result of blow-downs only account for losses of ~0.004PgCy1. Simulation of growth and mortality indicates that even when all carbon losses from intermediate and large-scale disturbances are considered, these are outweighed by the net biomass accumulation by tree growth, supporting the inference of an Amazon carbon sink.
650 $aAmazonia
650 $aCarbono
650 $aClima
650 $aFloresta
653 $aCiência da Terra
700 1 $aGLOOR, M.
700 1 $aKELLER, M.
700 1 $aMALHI, Y.
700 1 $aSAATCHI, S.
700 1 $aNELSON, B.
700 1 $aOLIVEIRA JUNIOR, R. C.
700 1 $aPEREIRA, C.
700 1 $aLLOYD, J.
700 1 $aFROLKING, S.
700 1 $aPALACE, M.
700 1 $aSHIMABUKURO, Y. E.
700 1 $aDUARTE, V.
700 1 $aMONTEAGUDO MENDOZA, A.
700 1 $aLÓPEZ-GONZÁLEZ, G.
700 1 $aBAKER, T. R.
700 1 $aFELDPAUSCH, T. R.
700 1 $aBRIENEN, R. J. W.
700 1 $aASNER, G. P.
700 1 $aBOYD, D. S.
700 1 $aPHILLIPS, O. L.
773 $tNature Communications$gv. 5, art. n. 3434, 18 Mar. 2014.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
08/03/2017 |
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Data da última atualização: |
08/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
BRUNO, L. R. G. P.; ANTONIO, R. P.; ASSIS, J. G. de A.; MOREIRA, J. N.; LIRA, I. C. de S. A. |
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Afiliação: |
LEILA REGINA GOMES PASSOS BRUNO, Universidade Estadual de Feira de Santana; RAFAELA PRISCILA ANTONIO, CPATSA; JOSÉ GERALDO DE AQUINO ASSIS, Universidade Federal da Bahia; JOSE NILTON MOREIRA, CPATSA; IRLANE CRISTINE DE SOUZA ANDRADE LIRA, UFRPE. |
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Título: |
Buffel grass morphoagronomic characterization from cenchrus germplasm active bank. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Revista Caatinga, Mossoró, v. 30, n. 2, p. 487-495, abr./jun. 2017. |
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ISSN: |
1983-2125 |
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Idioma: |
Português |
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Conteúdo: |
This study aimed to characterize buffel grass accessions of the Cenchrus Germplasm Active Bank (CGAB) from Embrapa Semi-Arid in a morphoagronomic way, checking the descriptors variability and efficiency in accessions on two consecutive cuts. Twenty-five accessions and five buffel grass cultivars were used in randomized complete block design with three replications. Evaluations were conducted after two consecutive cuts, each evaluation performed 90 days after each cut. Characterization was based on 15 quantitative and qualitative morphoagronomic descriptors. Quantitative descriptors were subjected to individual and joint univariate analysis of variance, followed by the Scott-Knott?s test at 5% significance. Yet qualitative descriptors were submitted to descriptive analysis. Both quantitative and qualitative descriptors were grouped based on the Gower algorithm for divergence analysis. A dendrogram and calculations of the characters relative importance for divergence were established. Genotype and cutting effects were significant for almost all descriptors in the joint analysis. This result indicates a genetic variability between genotypes and, regarding the cut, it indicates mainly differences in growth rate of each genotype in each cutting season. Genotypes were separated into three groups, which showed good genotype variation. The number of tillers per clump, followed by number of inflorescence and color of seeds, were the most relevant characters in genotype separation. |
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Palavras-Chave: |
Banco Ativo de Germoplasma; Diversidade genética; Genetic diversity; Gramíneas forrageiras; Recursos genéticos. |
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Thesagro: |
Capim buffel; Cenchrus ciliaris; Pastagem. |
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Thesaurus NAL: |
Forage grasses; Genetic resources. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/157403/1/Rafaela-2017.pdf
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Marc: |
LEADER 02401naa a2200301 a 4500
001 2066558
005 2018-01-08
008 2017 bl uuuu u00u1 u #d
022 $a1983-2125
100 1 $aBRUNO, L. R. G. P.
245 $aBuffel grass morphoagronomic characterization from cenchrus germplasm active bank.$h[electronic resource]
260 $c2017
520 $aThis study aimed to characterize buffel grass accessions of the Cenchrus Germplasm Active Bank (CGAB) from Embrapa Semi-Arid in a morphoagronomic way, checking the descriptors variability and efficiency in accessions on two consecutive cuts. Twenty-five accessions and five buffel grass cultivars were used in randomized complete block design with three replications. Evaluations were conducted after two consecutive cuts, each evaluation performed 90 days after each cut. Characterization was based on 15 quantitative and qualitative morphoagronomic descriptors. Quantitative descriptors were subjected to individual and joint univariate analysis of variance, followed by the Scott-Knott?s test at 5% significance. Yet qualitative descriptors were submitted to descriptive analysis. Both quantitative and qualitative descriptors were grouped based on the Gower algorithm for divergence analysis. A dendrogram and calculations of the characters relative importance for divergence were established. Genotype and cutting effects were significant for almost all descriptors in the joint analysis. This result indicates a genetic variability between genotypes and, regarding the cut, it indicates mainly differences in growth rate of each genotype in each cutting season. Genotypes were separated into three groups, which showed good genotype variation. The number of tillers per clump, followed by number of inflorescence and color of seeds, were the most relevant characters in genotype separation.
650 $aForage grasses
650 $aGenetic resources
650 $aCapim buffel
650 $aCenchrus ciliaris
650 $aPastagem
653 $aBanco Ativo de Germoplasma
653 $aDiversidade genética
653 $aGenetic diversity
653 $aGramíneas forrageiras
653 $aRecursos genéticos
700 1 $aANTONIO, R. P.
700 1 $aASSIS, J. G. de A.
700 1 $aMOREIRA, J. N.
700 1 $aLIRA, I. C. de S. A.
773 $tRevista Caatinga, Mossoró$gv. 30, n. 2, p. 487-495, abr./jun. 2017.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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