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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
01/09/2017 |
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Data da última atualização: |
12/02/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PALACE, M.; KELLER, M.; ASNER, G. P.; SILVA, J. N. M.; PASSOS, C. |
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Afiliação: |
MICHAEL PALACE, UNIVERSITY OF NEW HAMPSHIRE; MICHAEL KELLER, UNIVERSITY OF NEW HAMPSHIRE; GREGORY P. ASNER, STANFORD UNIVERSITY; JOSE NATALINO MACEDO SILVA, CPATU; CARLOS PASSOS, UNIVERSIDADE FEDERAL DE MATO GROSSO. |
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Título: |
Necromass in undisturbed and logged forests in the Brazilian Amazon. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 238, n. 1/3, p. 309-318, Jan. 2007. |
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DOI: |
10.1016/j.foreco.2006.10.026 |
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Idioma: |
Inglês |
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Conteúdo: |
Necromass is an important stock of carbon in tropical forests. We estimated volume, density, and mass of fallen and standing necromass in undisturbed and selectively logged forests at Juruena, Mato Grosso, Brazil (10.48°S, 58.47°W). We also measured standing dead trees at the Tapajos National Forest, Para, Brazil (3.08°S, 54.94°W) complementing our earlier study there on fallen necromass. We compared forest that was selectively logged using reduced-impact logging methods and undisturbed forest. We estimated necromass density accounting for void volume for necromass greater than 10 cm diameter at Juruena for five decay classes that ranged from freshly fallen (class 1) to highly decayed material (class 5). Average necromass density adjusted for void space (±S.E.) was 0.71 (0.02), 0.69 (0.04), 0.60 (0.04), 0.59 (0.06), and 0.33 (0.05) Mg m−3 for classes 1 through 5, respectively. Small (2?5 cm) and medium (5?10 cm) size classes had densities of 0.52 (0.02) and 0.50 (0.04) Mg m−3, respectively. The average dry mass (±S.E.) of fallen necromass at Juruena was 44.9 (0.2) and 67.0 (10.1) Mg ha−1 for duplicate undisturbed and reduced impact logging sites, respectively. Small and medium sized material together accounted for 12?21% of the total fallen necromass at Juruena. At Juruena, the average mass of standing dead was 5.3 (1.0) Mg ha−1 for undisturbed forest and 8.8 (2.3) Mg ha−1 for forest logged with reduced impact methods. At Tapajos, standing dead average mass was 7.7 (2.0) Mg ha−1 for undisturbed forest and 12.9 (4.6) Mg ha−1 for logged forest. The proportion of standing dead to total fallen necromass was 12?17%. Even with reduced impact harvest management, logged forests had approximately 50% more total necromass than undisturbed forests. MenosNecromass is an important stock of carbon in tropical forests. We estimated volume, density, and mass of fallen and standing necromass in undisturbed and selectively logged forests at Juruena, Mato Grosso, Brazil (10.48°S, 58.47°W). We also measured standing dead trees at the Tapajos National Forest, Para, Brazil (3.08°S, 54.94°W) complementing our earlier study there on fallen necromass. We compared forest that was selectively logged using reduced-impact logging methods and undisturbed forest. We estimated necromass density accounting for void volume for necromass greater than 10 cm diameter at Juruena for five decay classes that ranged from freshly fallen (class 1) to highly decayed material (class 5). Average necromass density adjusted for void space (±S.E.) was 0.71 (0.02), 0.69 (0.04), 0.60 (0.04), 0.59 (0.06), and 0.33 (0.05) Mg m−3 for classes 1 through 5, respectively. Small (2?5 cm) and medium (5?10 cm) size classes had densities of 0.52 (0.02) and 0.50 (0.04) Mg m−3, respectively. The average dry mass (±S.E.) of fallen necromass at Juruena was 44.9 (0.2) and 67.0 (10.1) Mg ha−1 for duplicate undisturbed and reduced impact logging sites, respectively. Small and medium sized material together accounted for 12?21% of the total fallen necromass at Juruena. At Juruena, the average mass of standing dead was 5.3 (1.0) Mg ha−1 for undisturbed forest and 8.8 (2.3) Mg ha−1 for forest logged with reduced impact methods. At Tapajos, standing dead ... Mostrar Tudo |
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Palavras-Chave: |
Registro de impacto reduzido. |
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Thesagro: |
Densidade da Madeira; Floresta Tropical. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02477naa a2200217 a 4500
001 2074838
005 2025-02-12
008 2007 bl uuuu u00u1 u #d
024 7 $a10.1016/j.foreco.2006.10.026$2DOI
100 1 $aPALACE, M.
245 $aNecromass in undisturbed and logged forests in the Brazilian Amazon.$h[electronic resource]
260 $c2007
520 $aNecromass is an important stock of carbon in tropical forests. We estimated volume, density, and mass of fallen and standing necromass in undisturbed and selectively logged forests at Juruena, Mato Grosso, Brazil (10.48°S, 58.47°W). We also measured standing dead trees at the Tapajos National Forest, Para, Brazil (3.08°S, 54.94°W) complementing our earlier study there on fallen necromass. We compared forest that was selectively logged using reduced-impact logging methods and undisturbed forest. We estimated necromass density accounting for void volume for necromass greater than 10 cm diameter at Juruena for five decay classes that ranged from freshly fallen (class 1) to highly decayed material (class 5). Average necromass density adjusted for void space (±S.E.) was 0.71 (0.02), 0.69 (0.04), 0.60 (0.04), 0.59 (0.06), and 0.33 (0.05) Mg m−3 for classes 1 through 5, respectively. Small (2?5 cm) and medium (5?10 cm) size classes had densities of 0.52 (0.02) and 0.50 (0.04) Mg m−3, respectively. The average dry mass (±S.E.) of fallen necromass at Juruena was 44.9 (0.2) and 67.0 (10.1) Mg ha−1 for duplicate undisturbed and reduced impact logging sites, respectively. Small and medium sized material together accounted for 12?21% of the total fallen necromass at Juruena. At Juruena, the average mass of standing dead was 5.3 (1.0) Mg ha−1 for undisturbed forest and 8.8 (2.3) Mg ha−1 for forest logged with reduced impact methods. At Tapajos, standing dead average mass was 7.7 (2.0) Mg ha−1 for undisturbed forest and 12.9 (4.6) Mg ha−1 for logged forest. The proportion of standing dead to total fallen necromass was 12?17%. Even with reduced impact harvest management, logged forests had approximately 50% more total necromass than undisturbed forests.
650 $aDensidade da Madeira
650 $aFloresta Tropical
653 $aRegistro de impacto reduzido
700 1 $aKELLER, M.
700 1 $aASNER, G. P.
700 1 $aSILVA, J. N. M.
700 1 $aPASSOS, C.
773 $tForest Ecology and Management$gv. 238, n. 1/3, p. 309-318, Jan. 2007.
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Embrapa Amazônia Oriental (CPATU) |
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| 7. |  | ZONOVELLI, B.; BORGES, C. C. H.; ARBEX, W. A.; OLIVEIRA, F. C. de; RIBEIRO, I. M. Regressão com máquinas de vetores suporte e seleção de atributos via algoritmo genético aplicada em seleção genômica. Revista Sodebras, v. 11, n. 129, set. 2016. Edição do 35º International Sodebras Congress, Foz do Iguaçu, 2016.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 12. | | OLIVEIRA, F. C. DE; ALMEIDA, F. N.; CAPRILES, P. V. S. Z.; ARBEX, W. A.; BORGES, C. C. H. Support vector machine e support vector regression para seleção de SNPs em GWAS. In: SIMPÓSIO DE MECÂNICA COMPUTACIONAL, 11.; ENCONTRO MINEIRO DE MODELAGEM COMPUTACIONAL, 2., 2014, Juiz de Fora. Resumos... Juiz de Fora: [s.n.], 2014. | Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 13. | | MAGALDI, H.; BRAGA, R.; ARBEX, W. A.; CAMPOS, M. M.; BORGES, C. C. H.; DAVID, J. M. N.; CAMPOS, F. Uso de ontologias e técnicas de visualização no apoio às pesquisas em eficiência alimentar de gado de leite. In: CONGRESSO BRASILEIRO DE AGROINFORMÁTICA, 11., 2017, Campinas. Ciência de dados na era da agricultura digital: anais. Campinas: Editora da Unicamp: Embrapa Informática Agropecuária, 2017. p. 625-637.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 14. | | MAGALDI, H.; BRAGA, R.; ARBEX, W. A.; CAMPOS, M. M.; BORGES, C. C. H.; DAVID, J. M. N.; CAMPOS, F.; STROELE, V. Análise de Eficiência Alimentar de Gado Leiteiro a partir da Integração de Bases Heterogêneas e Ontologias. In: BRAZILIAN E-SCIENCE WORKSHOP, 38., 2018, Natal-RN. Anais... [S.l.]: Sociedade Brasileira de Computação, 2018.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 15. | | ARBEX, W. A.; SILVA, F. F. e; SILVA, M. V. G. B.; BORGES, C. C. H.; OLIVEIRA, F. C. de; VARONA, L.; VERNEQUE, R. da S. Decision Support in Attribute Selection with Machine Learning Approach. In: CONFERENCIA IBÉRICA DE SISTEMAS Y TECNOLOGÍAS DE INFORMACION, 9., 2014, Barcelona. Actas... Barcelona: Aisti; Salle, 2014. CISTI 2014| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 16. | | OLIVEIRA, F. C. de; ALMEIDA, F. N.; SILVA, F. F. e; SILVA, M. V. G. B.; BORGES, C. C. H.; ARBEX, W. A. Metodologia para seleção de marcadores com máquina de vetores de suporte com regressão. In: ARBEX, A.; MARTINS, N. F.; MARTINS, M. F. Talking about computing and genomics - TACG vol.1: Modelos e métodos computacionais em Bioinformática. Brasília, DF: Embrapa, 2014. p. 101-126| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 17. | | OLIVEIRA, F. C. de; BORGES, C. C. H.; ALMEIDA, F. N.; SILVA, F. F. e; VERNEQUE, R. da S.; SILVA, M. V. G. B.; ARBEX, W. A. SNPs selection using support vector regression and genetic algorithms in GWAS. BMC Genomics, v. 15, article S4, 2014. 15 p. Suppl. 7.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
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