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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/11/2019 |
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Data da última atualização: |
10/12/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SEVEGNANI, L.; GASPER, A. L. de; RODRIGUES, A. V.; LINGNER, D. V.; MEYER, L.; UHLMANN, A.; OLIVEIRA, L. Z.; VIBRANS, A. C. |
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Afiliação: |
Lucia Sevegnani, FURB; André L de Gasper, FURB; Arthur V Rodrigues, FURB; Débora V Lingner, FURB; Leila Meyer, Universidade Federal de Goiás; ALEXANDRE UHLMANN, CNPF; Laio Z Oliveira, FURB; Alexander C Vibrans, FURB. |
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Título: |
Structure and diversity of the Araucaria forest in southern Brazil: biotic homogenisation hinders the recognition of floristic assemblages related to altitude. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Southern Forests, v. 81, n. 4, p. 297-305, 2019. |
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DOI: |
10.2989/20702620.2019.1636193 |
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Idioma: |
Inglês |
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Conteúdo: |
Forest structure and species abundance may respond to environmental features triggered by geomorphology, altitude gradients and human impacts. In this study we investigated if data from a large-area inventory would support the segregation of floristic assemblages related to altitude-oriented forest physiognomies established for the Brazilian Araucaria forest, even after decades of intense logging and degradation by canopy opening, burning and cattle grazing/trampling inside forests. We applied cluster analysis and non-metric multidimensional scaling (NMDS) to group 143 systematically distributed 0.4 ha plots, located in the southern Brazilian Araucaria forest, according to their species abundance. Subsequently, forest structure attributes, species richness and diversity were assessed. We found 368 species and an average of ~34 species per sample plot. Our estimations yielded a mean basal area per sample plot of 24.4 ± 2.1 m² ha?1, and a mean aboveground biomass of 86.9 ± 7.3 Mg ha?1 (± 95% confidence interval). Besides a subtle differentiation of the sample plots? species abundance along the altitudinal gradient (514?1 560 m above sea level) revealed by the NMDS, we did not find ecologically meaningful floristic assemblages related to altitude. Possibly, this result is a consequence of floristic and stand structure homogenisation caused by intensive historical (and ongoing) logging, cattle grazing inside stands and general land-use changes. In turn, forest structure attributes, such as total tree height, tree density and basal area, were more evidently related to the altitude gradient, most likely due to lower temperatures, stronger winds, greater cloud cover and frost frequency occurring at high-altitude sites. MenosForest structure and species abundance may respond to environmental features triggered by geomorphology, altitude gradients and human impacts. In this study we investigated if data from a large-area inventory would support the segregation of floristic assemblages related to altitude-oriented forest physiognomies established for the Brazilian Araucaria forest, even after decades of intense logging and degradation by canopy opening, burning and cattle grazing/trampling inside forests. We applied cluster analysis and non-metric multidimensional scaling (NMDS) to group 143 systematically distributed 0.4 ha plots, located in the southern Brazilian Araucaria forest, according to their species abundance. Subsequently, forest structure attributes, species richness and diversity were assessed. We found 368 species and an average of ~34 species per sample plot. Our estimations yielded a mean basal area per sample plot of 24.4 ± 2.1 m² ha?1, and a mean aboveground biomass of 86.9 ± 7.3 Mg ha?1 (± 95% confidence interval). Besides a subtle differentiation of the sample plots? species abundance along the altitudinal gradient (514?1 560 m above sea level) revealed by the NMDS, we did not find ecologically meaningful floristic assemblages related to altitude. Possibly, this result is a consequence of floristic and stand structure homogenisation caused by intensive historical (and ongoing) logging, cattle grazing inside stands and general land-use changes. In turn, forest structure attribut... Mostrar Tudo |
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Palavras-Chave: |
Composição florística; Fitossociologia; Floristic composition; Mixed forest; Regeneration; Species richness. |
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Thesaurus Nal: |
Phytosociology. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02697naa a2200301 a 4500
001 2114058
005 2019-12-10
008 2019 bl uuuu u00u1 u #d
024 7 $a10.2989/20702620.2019.1636193$2DOI
100 1 $aSEVEGNANI, L.
245 $aStructure and diversity of the Araucaria forest in southern Brazil$bbiotic homogenisation hinders the recognition of floristic assemblages related to altitude.$h[electronic resource]
260 $c2019
520 $aForest structure and species abundance may respond to environmental features triggered by geomorphology, altitude gradients and human impacts. In this study we investigated if data from a large-area inventory would support the segregation of floristic assemblages related to altitude-oriented forest physiognomies established for the Brazilian Araucaria forest, even after decades of intense logging and degradation by canopy opening, burning and cattle grazing/trampling inside forests. We applied cluster analysis and non-metric multidimensional scaling (NMDS) to group 143 systematically distributed 0.4 ha plots, located in the southern Brazilian Araucaria forest, according to their species abundance. Subsequently, forest structure attributes, species richness and diversity were assessed. We found 368 species and an average of ~34 species per sample plot. Our estimations yielded a mean basal area per sample plot of 24.4 ± 2.1 m² ha?1, and a mean aboveground biomass of 86.9 ± 7.3 Mg ha?1 (± 95% confidence interval). Besides a subtle differentiation of the sample plots? species abundance along the altitudinal gradient (514?1 560 m above sea level) revealed by the NMDS, we did not find ecologically meaningful floristic assemblages related to altitude. Possibly, this result is a consequence of floristic and stand structure homogenisation caused by intensive historical (and ongoing) logging, cattle grazing inside stands and general land-use changes. In turn, forest structure attributes, such as total tree height, tree density and basal area, were more evidently related to the altitude gradient, most likely due to lower temperatures, stronger winds, greater cloud cover and frost frequency occurring at high-altitude sites.
650 $aPhytosociology
653 $aComposição florística
653 $aFitossociologia
653 $aFloristic composition
653 $aMixed forest
653 $aRegeneration
653 $aSpecies richness
700 1 $aGASPER, A. L. de
700 1 $aRODRIGUES, A. V.
700 1 $aLINGNER, D. V.
700 1 $aMEYER, L.
700 1 $aUHLMANN, A.
700 1 $aOLIVEIRA, L. Z.
700 1 $aVIBRANS, A. C.
773 $tSouthern Forests$gv. 81, n. 4, p. 297-305, 2019.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Solos. |
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Data corrente: |
05/12/2017 |
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Data da última atualização: |
11/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SANTOS, F. M.; BALIEIRO, F. de C.; MARCELO ANTONIOL FONTES; CHAER, G. M. |
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Afiliação: |
FELIPE MARTINI SANTOS, UFRRJ; FABIANO DE CARVALHO BALIEIRO, CNPS; MARCELO ANTONIOL FONTES, CNPAB; GUILHERME MONTANDON CHAER, CNPAB. |
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Título: |
Understanding the enhanced litter decomposition of mixed-species plantations of Eucalyptus and Acacia mangium. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Plant and Soil, v. 423, n. 1/2, p. 141-155, Feb. 2018. |
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DOI: |
https://doi.org/10.1007/s11104-017-3491-7 |
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Idioma: |
Inglês |
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Conteúdo: |
Background and aims Soil microbial-derived litter decomposition represents an important step in the global carbon and nutrient cycling and, at the local level, is primarily driven by litter chemistry. Here, we assessed how mixed-species plantations with Eucalyptus urograndis and Acacia mangium could be a key to enhancing litter production, decomposition, and soil microbial activity. Methods The relationships between litter decomposition and litter quality and quantity were compared among 6-year-old monocultures of E. urograndis and A. mangium (E100+N and A100, respectively) and a mixed plantation of both species (E50A50). Additionally, we evaluated soil microbial biomass carbon (MBC) and nitrogen (MBN), soil basal respiration (SBR), soil enzymes and the N mineralization potential. Results The return to soil of N via litterfall in E50A50 was greater than E100+N, while the return of P in E100+N and E50A50 were higher than A100. The decomposition rate in A100 was slower than in the E50A50 and E100+N. The microbial activity, represented by soil enzyme activities (proteases and N-acetyl-B- glucosaminidases), was consistently higher in E50A50 than in A100. Conclusion The E50A50 presented a more balanced supply ofN and P associated to a better structural quality of the litter for microbial metabolism, with synergic reflections on decomposition rates and release of nitrogen. |
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Palavras-Chave: |
Árvores fixadoras de nitrogênio; Decomposer starvation; N P stoichiometry; Nutrient cycling. |
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Thesagro: |
Atividade Enzimática; Nutriente. |
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Thesaurus NAL: |
Enzyme activity; Intercropping. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra
S Ciências Biológicas |
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Marc: |
LEADER 02248naa a2200265 a 4500
001 2081488
005 2021-11-11
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s11104-017-3491-7$2DOI
100 1 $aSANTOS, F. M.
245 $aUnderstanding the enhanced litter decomposition of mixed-species plantations of Eucalyptus and Acacia mangium.$h[electronic resource]
260 $c2018
520 $aBackground and aims Soil microbial-derived litter decomposition represents an important step in the global carbon and nutrient cycling and, at the local level, is primarily driven by litter chemistry. Here, we assessed how mixed-species plantations with Eucalyptus urograndis and Acacia mangium could be a key to enhancing litter production, decomposition, and soil microbial activity. Methods The relationships between litter decomposition and litter quality and quantity were compared among 6-year-old monocultures of E. urograndis and A. mangium (E100+N and A100, respectively) and a mixed plantation of both species (E50A50). Additionally, we evaluated soil microbial biomass carbon (MBC) and nitrogen (MBN), soil basal respiration (SBR), soil enzymes and the N mineralization potential. Results The return to soil of N via litterfall in E50A50 was greater than E100+N, while the return of P in E100+N and E50A50 were higher than A100. The decomposition rate in A100 was slower than in the E50A50 and E100+N. The microbial activity, represented by soil enzyme activities (proteases and N-acetyl-B- glucosaminidases), was consistently higher in E50A50 than in A100. Conclusion The E50A50 presented a more balanced supply ofN and P associated to a better structural quality of the litter for microbial metabolism, with synergic reflections on decomposition rates and release of nitrogen.
650 $aEnzyme activity
650 $aIntercropping
650 $aAtividade Enzimática
650 $aNutriente
653 $aÁrvores fixadoras de nitrogênio
653 $aDecomposer starvation
653 $aN P stoichiometry
653 $aNutrient cycling
700 1 $aBALIEIRO, F. de C.
700 1 $aMARCELO ANTONIOL FONTES
700 1 $aCHAER, G. M.
773 $tPlant and Soil$gv. 423, n. 1/2, p. 141-155, Feb. 2018.
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