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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
30/08/2017 |
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Data da última atualização: |
22/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HAREN, J. L. M. van; OLIVEIRA JUNIOR, R. C. de; RESTREPO-COUPE, N.; HUTYRA, L.; CAMARGO, P. B. de; KELLER, M.; SALESKA, S. R. |
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Afiliação: |
Joost L. M. van Haren, University of Arizona; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; Natalia Restrepo?Coupe, University of Arizona; Lucy Hutyra, Boston University; Plinio B. de Camargo, USP/CENA; Michael Keller, University of New Hampshire; Scott R. Saleska, University of Arizona. |
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Título: |
Do plant species influence soil CO2 and N2O fluxes in a diverse tropical forest? |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Journal of Geophysical Research, v. 115, G03010, 2010. |
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DOI: |
10.1029/2009JG001231 |
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Idioma: |
Inglês |
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Conteúdo: |
To test whether plant species influence greenhouse gas production in diverse ecosystems, we measured wet season soil CO2 and N2O fluxes close to ∼300 large (>35 cm in diameter at breast height (DBH)) trees of 15 species at three clay‐rich forest sites in central Amazonia. We found that soil CO2 fluxes were 38% higher near large trees than at control sites >10 m away from any tree (P < 0.0001). After adjusting for large tree presence, a multiple linear regression of soil temperature, bulk density, and liana DBH explained 19% of remaining CO2 flux variability. Soil N2O fluxes adjacent to Caryocar villosum, Lecythis lurida, Schefflera morototoni, and Manilkara huberi were 84%−196% greater than Erisma uncinatum and Vochysia maxima, both Vochysiaceae. Tree species identity was the most important explanatory factor for N2O fluxes, accounting for more than twice the N2O flux variability as all other factors combined. Two observations suggest a mechanism for this finding: (1) sugar addition increased N2O fluxes near C. villosum twice as much (P < 0.05) as near Vochysiaceae and (2) species mean N2O fluxes were strongly negatively correlated with tree growth rate (P = 0.002). These observations imply that through enhanced belowground carbon allocation liana and tree species can stimulate soil CO2 and N2O fluxes (by enhancing denitrification when carbon limits microbial metabolism). Alternatively, low N2O fluxes potentially result from strong competition of tree species with microbes for nutrients. Species‐specific patterns in CO2 and N2O fluxes demonstrate that plant species can influence soil biogeochemical processes in a diverse tropical forest. MenosTo test whether plant species influence greenhouse gas production in diverse ecosystems, we measured wet season soil CO2 and N2O fluxes close to ∼300 large (>35 cm in diameter at breast height (DBH)) trees of 15 species at three clay‐rich forest sites in central Amazonia. We found that soil CO2 fluxes were 38% higher near large trees than at control sites >10 m away from any tree (P < 0.0001). After adjusting for large tree presence, a multiple linear regression of soil temperature, bulk density, and liana DBH explained 19% of remaining CO2 flux variability. Soil N2O fluxes adjacent to Caryocar villosum, Lecythis lurida, Schefflera morototoni, and Manilkara huberi were 84%−196% greater than Erisma uncinatum and Vochysia maxima, both Vochysiaceae. Tree species identity was the most important explanatory factor for N2O fluxes, accounting for more than twice the N2O flux variability as all other factors combined. Two observations suggest a mechanism for this finding: (1) sugar addition increased N2O fluxes near C. villosum twice as much (P < 0.05) as near Vochysiaceae and (2) species mean N2O fluxes were strongly negatively correlated with tree growth rate (P = 0.002). These observations imply that through enhanced belowground carbon allocation liana and tree species can stimulate soil CO2 and N2O fluxes (by enhancing denitrification when carbon limits microbial metabolism). Alternatively, low N2O fluxes potentially result from strong competition of tree speci... Mostrar Tudo |
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Thesagro: |
Floresta Tropical; Solo. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02377naa a2200229 a 4500
001 2074713
005 2021-12-22
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1029/2009JG001231$2DOI
100 1 $aHAREN, J. L. M. van
245 $aDo plant species influence soil CO2 and N2O fluxes in a diverse tropical forest?$h[electronic resource]
260 $c2010
520 $aTo test whether plant species influence greenhouse gas production in diverse ecosystems, we measured wet season soil CO2 and N2O fluxes close to ∼300 large (>35 cm in diameter at breast height (DBH)) trees of 15 species at three clay‐rich forest sites in central Amazonia. We found that soil CO2 fluxes were 38% higher near large trees than at control sites >10 m away from any tree (P < 0.0001). After adjusting for large tree presence, a multiple linear regression of soil temperature, bulk density, and liana DBH explained 19% of remaining CO2 flux variability. Soil N2O fluxes adjacent to Caryocar villosum, Lecythis lurida, Schefflera morototoni, and Manilkara huberi were 84%−196% greater than Erisma uncinatum and Vochysia maxima, both Vochysiaceae. Tree species identity was the most important explanatory factor for N2O fluxes, accounting for more than twice the N2O flux variability as all other factors combined. Two observations suggest a mechanism for this finding: (1) sugar addition increased N2O fluxes near C. villosum twice as much (P < 0.05) as near Vochysiaceae and (2) species mean N2O fluxes were strongly negatively correlated with tree growth rate (P = 0.002). These observations imply that through enhanced belowground carbon allocation liana and tree species can stimulate soil CO2 and N2O fluxes (by enhancing denitrification when carbon limits microbial metabolism). Alternatively, low N2O fluxes potentially result from strong competition of tree species with microbes for nutrients. Species‐specific patterns in CO2 and N2O fluxes demonstrate that plant species can influence soil biogeochemical processes in a diverse tropical forest.
650 $aFloresta Tropical
650 $aSolo
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aRESTREPO-COUPE, N.
700 1 $aHUTYRA, L.
700 1 $aCAMARGO, P. B. de
700 1 $aKELLER, M.
700 1 $aSALESKA, S. R.
773 $tJournal of Geophysical Research$gv. 115, G03010, 2010.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Tipo/Formato |
Classificação |
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Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
09/12/2019 |
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Data da última atualização: |
13/04/2020 |
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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: |
SIMON, M. F.; REIS, T. S.; MENDOZA F. J. M.; ARQUELÃO, T. K. M.; BRINGEL JR. J. B. A.; NORONHA, S. E.; MARTINS, M. L. L.; LEDO, C. A. da S.; SILVA, M. J.; SAMPAIO, A. B.; MATRICARDI, E. T.; SCARIOT, A. |
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Afiliação: |
MARCELO FRAGOMENI SIMON, Cenargen; TALITA S. REIS; J. MOISES MENDOZA F.; THALYSSA K. M. ARQUELÃO; JOÃO B. A. BRINGEL JR.; SERGIO EUSTAQUIO DE NORONHA, Cenargen; MÁRCIO L. L. MARTINS; CARLOS ALBERTO DA SILVA LEDO, CNPMF; MARCOS J. SILVA; ALEXANDRE B. SAMPAIO; ERALDO T. MATRICARDI; ALDICIR OSNI SCARIOT, Cenargen. |
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Título: |
Conservation assessment of cassava wild relatives in central Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Biodiversity and Conservation, v. 29, p. 1589-1612, 2020. |
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DOI: |
10.1007/s10531-018-1626-7 |
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Idioma: |
Inglês |
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Conteúdo: |
Crop wild relatives (CWR) are a key component of the world?s biota since they have the potential to contribute traits for crop improvement. The rich flora of the Brazilian Cerrado harbours a large number of CWR, but little is known about their distribution and conservation status. This study focused on the conservation of cassava (Manihot) wild relatives in the Cerrado. To accomplish this, we performed herbarium and field surveys to assess species conservation status based on geographic distribution, population density estimates, and rates of habitat loss. We found 75 species of Manihot occurring in the Cerrado, including 59 endemics. Among the endemic taxa, 24 are at some level of threat according to IUCN classification (14% Vulnerable, 22% Endangered, 5% Critically endangered), mostly owing to narrow geographic range and habitat loss. Most species are locally abundant, ranging from 55 to 1493 mature individuals per hectare. A quarter of the species recorded have been described over the past 5 years, indicating that the diversity of Manihot in the Cerrado is still underestimated. Areas of high species richness and endemism coincided mostly with Cerrado highlands, particularly in northern Goiás state. Field surveys in 16 reserves indicate that 54% of Cerrado endemics are not represented in these protected areas. We believe that the patterns of distribution and conservation status uncovered here for Manihot are representative of many plant groups that are particularly diverse in high-altitude areas in the Cerrado. This calls for expansion of the network of protected areas to cover a wider range of environments, particularly those with a concentration of rare and endemic species, to ensure the effective in situ conservation of CWR present in the Cerrado flora. MenosCrop wild relatives (CWR) are a key component of the world?s biota since they have the potential to contribute traits for crop improvement. The rich flora of the Brazilian Cerrado harbours a large number of CWR, but little is known about their distribution and conservation status. This study focused on the conservation of cassava (Manihot) wild relatives in the Cerrado. To accomplish this, we performed herbarium and field surveys to assess species conservation status based on geographic distribution, population density estimates, and rates of habitat loss. We found 75 species of Manihot occurring in the Cerrado, including 59 endemics. Among the endemic taxa, 24 are at some level of threat according to IUCN classification (14% Vulnerable, 22% Endangered, 5% Critically endangered), mostly owing to narrow geographic range and habitat loss. Most species are locally abundant, ranging from 55 to 1493 mature individuals per hectare. A quarter of the species recorded have been described over the past 5 years, indicating that the diversity of Manihot in the Cerrado is still underestimated. Areas of high species richness and endemism coincided mostly with Cerrado highlands, particularly in northern Goiás state. Field surveys in 16 reserves indicate that 54% of Cerrado endemics are not represented in these protected areas. We believe that the patterns of distribution and conservation status uncovered here for Manihot are representative of many plant groups that are particularly diverse... Mostrar Tudo |
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Palavras-Chave: |
Crop wild relatives; Endemism; IUCN red list criteria. |
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Thesagro: |
Cerrado; Flora; Mandioca. |
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Thesaurus NAL: |
Cassava; Manihot. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02781naa a2200361 a 4500
001 2116343
005 2020-04-13
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1007/s10531-018-1626-7$2DOI
100 1 $aSIMON, M. F.
245 $aConservation assessment of cassava wild relatives in central Brazil.$h[electronic resource]
260 $c2020
520 $aCrop wild relatives (CWR) are a key component of the world?s biota since they have the potential to contribute traits for crop improvement. The rich flora of the Brazilian Cerrado harbours a large number of CWR, but little is known about their distribution and conservation status. This study focused on the conservation of cassava (Manihot) wild relatives in the Cerrado. To accomplish this, we performed herbarium and field surveys to assess species conservation status based on geographic distribution, population density estimates, and rates of habitat loss. We found 75 species of Manihot occurring in the Cerrado, including 59 endemics. Among the endemic taxa, 24 are at some level of threat according to IUCN classification (14% Vulnerable, 22% Endangered, 5% Critically endangered), mostly owing to narrow geographic range and habitat loss. Most species are locally abundant, ranging from 55 to 1493 mature individuals per hectare. A quarter of the species recorded have been described over the past 5 years, indicating that the diversity of Manihot in the Cerrado is still underestimated. Areas of high species richness and endemism coincided mostly with Cerrado highlands, particularly in northern Goiás state. Field surveys in 16 reserves indicate that 54% of Cerrado endemics are not represented in these protected areas. We believe that the patterns of distribution and conservation status uncovered here for Manihot are representative of many plant groups that are particularly diverse in high-altitude areas in the Cerrado. This calls for expansion of the network of protected areas to cover a wider range of environments, particularly those with a concentration of rare and endemic species, to ensure the effective in situ conservation of CWR present in the Cerrado flora.
650 $aCassava
650 $aManihot
650 $aCerrado
650 $aFlora
650 $aMandioca
653 $aCrop wild relatives
653 $aEndemism
653 $aIUCN red list criteria
700 1 $aREIS, T. S.
700 1 $aMENDOZA F. J. M.
700 1 $aARQUELÃO, T. K. M.
700 1 $aBRINGEL JR. J. B. A.
700 1 $aNORONHA, S. E.
700 1 $aMARTINS, M. L. L.
700 1 $aLEDO, C. A. da S.
700 1 $aSILVA, M. J.
700 1 $aSAMPAIO, A. B.
700 1 $aMATRICARDI, E. T.
700 1 $aSCARIOT, A.
773 $tBiodiversity and Conservation$gv. 29, p. 1589-1612, 2020.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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