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 | Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
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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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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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| Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
16/09/2021 |
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Data da última atualização: |
16/09/2021 |
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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: |
ARAUJO, J. K. S.; SOUZA JÚNIOR, V. S. de; MARQUES, F. A.; VORONEY, P.; SOUZA, R. A. da S.; CORRÊA, M. M.; CÂMARA, E. R. G. |
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Afiliação: |
JANE KELLY SILVA ARAUJO, UFRPE; VALDOMIRO SEVERINO DE SOUZA JÚNIOR, UFRPE; FLAVIO ADRIANO MARQUES, CNPS; PAUL VORONEY, UNIVERSITY OF GUELPH; REGILENE ANGELICA DA SILVA SOUZA, UFRAM; MARCELO METRI CORRÊA, UFRPE; ELIS REGINA GUIMARÃES CÂMARA, UFRPE. |
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Título: |
Umbric Ferralsols along a climosequence from the Atlantic coast to the highlands of northeastern Brazil: characterization and carbon mineralization. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Geoderma, v. 293, p. 34-43, May 2017. |
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DOI: |
https://doi.org/10.1016/j.geoderma.2017.01.022 |
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Idioma: |
Inglês |
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Conteúdo: |
A thick umbric horizon (~ 1 m) is an important component in the balance of the carbon (C) cycle. However, little is known about the characteristics and C stability in the umbric horizon of Ferralsols, the tropical environments surrounded by semi-arid regions in northeastern (NE) Brazil. This study aimed to evaluate (i) morphological, physical, chemical, biological and mineralogical attributes and (ii) C accumulation in the surface and subsurface within five Umbric Ferralsols along a 475-km climosequence from 143 to 963 m a.s.l. located in coastal and upland areas in NE Brazil. Soil samples were collected in all of the horizons. Umbric Ferralsols present characteristics that are primarily influenced by their sedimentary parent material, which are mostly kaolinitic. The texture ranges from sandy clay loam to very clayey with an absence of macroscopic coal in depth. There is greater C storage of the umbric horizon in the coastal areas with hot and humid climates. This indicates that the current climate is not the predominant factor in the formation of the umbric epipedon. C mineralization in the surface horizons was related to potentially mineralizable nitrogen (N) and labile and organic C, suggesting that the quality of the organic substrate and mainly the N dynamic can drive the accumulation of C. In contrast, C mineralization in subsurface horizons was primarily influenced by forms of aluminum and oxalate-extractable iron and was independent of soil organic matter fractions. However, in the umbric horizon, crystalline forms of iron were mainly associated with protection against C mineralization. MenosA thick umbric horizon (~ 1 m) is an important component in the balance of the carbon (C) cycle. However, little is known about the characteristics and C stability in the umbric horizon of Ferralsols, the tropical environments surrounded by semi-arid regions in northeastern (NE) Brazil. This study aimed to evaluate (i) morphological, physical, chemical, biological and mineralogical attributes and (ii) C accumulation in the surface and subsurface within five Umbric Ferralsols along a 475-km climosequence from 143 to 963 m a.s.l. located in coastal and upland areas in NE Brazil. Soil samples were collected in all of the horizons. Umbric Ferralsols present characteristics that are primarily influenced by their sedimentary parent material, which are mostly kaolinitic. The texture ranges from sandy clay loam to very clayey with an absence of macroscopic coal in depth. There is greater C storage of the umbric horizon in the coastal areas with hot and humid climates. This indicates that the current climate is not the predominant factor in the formation of the umbric epipedon. C mineralization in the surface horizons was related to potentially mineralizable nitrogen (N) and labile and organic C, suggesting that the quality of the organic substrate and mainly the N dynamic can drive the accumulation of C. In contrast, C mineralization in subsurface horizons was primarily influenced by forms of aluminum and oxalate-extractable iron and was independent of soil organic matter fractions.... Mostrar Tudo |
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Palavras-Chave: |
Deep carbon; Microbial respiration; Semiárido; Soil nitrogen. |
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Thesagro: |
Carbono; Nitrogênio. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02499naa a2200277 a 4500
001 2134501
005 2021-09-16
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.geoderma.2017.01.022$2DOI
100 1 $aARAUJO, J. K. S.
245 $aUmbric Ferralsols along a climosequence from the Atlantic coast to the highlands of northeastern Brazil$bcharacterization and carbon mineralization.$h[electronic resource]
260 $c2017
520 $aA thick umbric horizon (~ 1 m) is an important component in the balance of the carbon (C) cycle. However, little is known about the characteristics and C stability in the umbric horizon of Ferralsols, the tropical environments surrounded by semi-arid regions in northeastern (NE) Brazil. This study aimed to evaluate (i) morphological, physical, chemical, biological and mineralogical attributes and (ii) C accumulation in the surface and subsurface within five Umbric Ferralsols along a 475-km climosequence from 143 to 963 m a.s.l. located in coastal and upland areas in NE Brazil. Soil samples were collected in all of the horizons. Umbric Ferralsols present characteristics that are primarily influenced by their sedimentary parent material, which are mostly kaolinitic. The texture ranges from sandy clay loam to very clayey with an absence of macroscopic coal in depth. There is greater C storage of the umbric horizon in the coastal areas with hot and humid climates. This indicates that the current climate is not the predominant factor in the formation of the umbric epipedon. C mineralization in the surface horizons was related to potentially mineralizable nitrogen (N) and labile and organic C, suggesting that the quality of the organic substrate and mainly the N dynamic can drive the accumulation of C. In contrast, C mineralization in subsurface horizons was primarily influenced by forms of aluminum and oxalate-extractable iron and was independent of soil organic matter fractions. However, in the umbric horizon, crystalline forms of iron were mainly associated with protection against C mineralization.
650 $aCarbono
650 $aNitrogênio
653 $aDeep carbon
653 $aMicrobial respiration
653 $aSemiárido
653 $aSoil nitrogen
700 1 $aSOUZA JÚNIOR, V. S. de
700 1 $aMARQUES, F. A.
700 1 $aVORONEY, P.
700 1 $aSOUZA, R. A. da S.
700 1 $aCORRÊA, M. M.
700 1 $aCÂMARA, E. R. G.
773 $tGeoderma$gv. 293, p. 34-43, May 2017.
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