| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
28/05/2013 |
|
Data da última atualização: |
19/02/2015 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
DECAËNS, T.; PORCO, D.; ROUGERIE, R.; BROWN, G. G.; JAMES, S. W. |
|
Afiliação: |
THIBAUD DECAËNS, UNIVERSITÉ DE ROUEN; DAVID PORCO, UNIVERSITY OF GUELPH; RODOLPHE ROUGERIE, UNIVERSITY OF GUELPH; GEORGE GARDNER BROWN, CNPF; SAMUEL W. JAMES, UNIVERSITY OF IOWA. |
|
Título: |
Potential of DNA barcoding for earthworm research in taxonomy and ecology. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
Applied Soil Ecology, v. 65, p. 35-40, 2013. |
|
Idioma: |
Inglês |
|
Notas: |
Review. |
|
Conteúdo: |
The biodiversity of soil animal communities is still poorly known. Most taxa, from the smaller body-sized to the large invertebrates of the macrofauna, suffer a strong taxonomic deficit. Earthworms comprise about 3700 described species, but this number probably only represents half of the actual worldwide diversity of the group. In many cases, earthworm species identification is impeded by the lack of stable and easily observable morphological characters, a high level of phenotypic variability, and the lack of diagnostic characters in juvenile stages. Another problem is the high level of expertise required for these identifications, in addition to the lack of expert identification services. These limitations are a serious issue in studies that focus on this group and which require reliable identifications and/or species lists (e.g. taxonomy, biogeography, community ecology, etc.). DNA barcoding, the use of a short DNA fragment as a genetic tag for species identification, offers both a better circumscription of species and a solution to streamline identifications. Preliminary studies have demonstrated the value of this approach for species discrimination, identification of new taxa, identification of juveniles, detection of cryptic diversity, and rapid surveys of biodiversity at different spatial scales. In this review, we illustrate these aspects with examples taken from published studies as well as from unpublished preliminary results of the “Earthworm Barcode of Life” (EarthwormBOL) campaign of the “International Barcode of Life” initiative (iBOL). MenosThe biodiversity of soil animal communities is still poorly known. Most taxa, from the smaller body-sized to the large invertebrates of the macrofauna, suffer a strong taxonomic deficit. Earthworms comprise about 3700 described species, but this number probably only represents half of the actual worldwide diversity of the group. In many cases, earthworm species identification is impeded by the lack of stable and easily observable morphological characters, a high level of phenotypic variability, and the lack of diagnostic characters in juvenile stages. Another problem is the high level of expertise required for these identifications, in addition to the lack of expert identification services. These limitations are a serious issue in studies that focus on this group and which require reliable identifications and/or species lists (e.g. taxonomy, biogeography, community ecology, etc.). DNA barcoding, the use of a short DNA fragment as a genetic tag for species identification, offers both a better circumscription of species and a solution to streamline identifications. Preliminary studies have demonstrated the value of this approach for species discrimination, identification of new taxa, identification of juveniles, detection of cryptic diversity, and rapid surveys of biodiversity at different spatial scales. In this review, we illustrate these aspects with examples taken from published studies as well as from unpublished preliminary results of the “Earthworm Barcode of Life” (Ear... Mostrar Tudo |
|
Palavras-Chave: |
Genética de populações. |
|
Thesagro: |
DNA; Minhoca; Taxonomia. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02197naa a2200229 a 4500
001 1958977
005 2015-02-19
008 2013 bl uuuu u00u1 u #d
100 1 $aDECAËNS, T.
245 $aPotential of DNA barcoding for earthworm research in taxonomy and ecology.$h[electronic resource]
260 $c2013
500 $aReview.
520 $aThe biodiversity of soil animal communities is still poorly known. Most taxa, from the smaller body-sized to the large invertebrates of the macrofauna, suffer a strong taxonomic deficit. Earthworms comprise about 3700 described species, but this number probably only represents half of the actual worldwide diversity of the group. In many cases, earthworm species identification is impeded by the lack of stable and easily observable morphological characters, a high level of phenotypic variability, and the lack of diagnostic characters in juvenile stages. Another problem is the high level of expertise required for these identifications, in addition to the lack of expert identification services. These limitations are a serious issue in studies that focus on this group and which require reliable identifications and/or species lists (e.g. taxonomy, biogeography, community ecology, etc.). DNA barcoding, the use of a short DNA fragment as a genetic tag for species identification, offers both a better circumscription of species and a solution to streamline identifications. Preliminary studies have demonstrated the value of this approach for species discrimination, identification of new taxa, identification of juveniles, detection of cryptic diversity, and rapid surveys of biodiversity at different spatial scales. In this review, we illustrate these aspects with examples taken from published studies as well as from unpublished preliminary results of the “Earthworm Barcode of Life” (EarthwormBOL) campaign of the “International Barcode of Life” initiative (iBOL).
650 $aDNA
650 $aMinhoca
650 $aTaxonomia
653 $aGenética de populações
700 1 $aPORCO, D.
700 1 $aROUGERIE, R.
700 1 $aBROWN, G. G.
700 1 $aJAMES, S. W.
773 $tApplied Soil Ecology$gv. 65, p. 35-40, 2013.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Solos. |
|
Data corrente: |
01/10/1992 |
|
Data da última atualização: |
02/04/2020 |
|
Autoria: |
DURIEZ, M. A. de M.; JOHAS, R. A. L.; BARRETO, W. de O. |
|
Título: |
Método simplificado para determinação dos valores Ki e Kr na terra fina. |
|
Ano de publicação: |
1982 |
|
Fonte/Imprenta: |
Rio de Janeiro: EMBRAPA-SNLCS, 1982. |
|
Páginas: |
10 p. |
|
Série: |
(EMBRAPA-SNLCS. Boletim de pesquisa, 2). |
|
ISSN: |
0101-6253 |
|
Idioma: |
Espanhol
Português |
|
Conteúdo: |
As relacoes Ki e Kr do solo foram determinadas na terra fina seca ao ar em 70 amostras selecionadas, abrangendo varias classes de solos do Brasil, objetivando simplificar a metodologia adotada no Servico Nacional de Levantamento e Conservacao de Solos (SNLCS) para obtencao destes valores. Determinou-se o valor das relacoes Ki e Kr na fracao argila (< 2 u) em 23 amostras de solo, onde procedeu-se tambem a analise de difratometria de raios-x. Por meio da analise estatistica verificou-se ser significativa a correlacao existente entre os dois metodos quimicos empregados, ou seja, o Metodo 1 simplificado e o Metodo 2 segundo Vettori (1969). Concluiu-se pelo uso das simplificacoes aqui sugeridas, visando nao somente dinamizar a producao do laboratorio, como reduziro custo operacional do processo. |
|
Palavras-Chave: |
Determinação de valores; Determinação dos valores ki e kr; KI; KR; kr na terra fina; Metodo de determinacao; Metodologia simplificada; Metodologia simplificada para valores ki e kr; Química analítica; Relação ki; Silica alumina; Silica sesquioxida; Solos; Terra fina; Valor Ki; Valor Kr. |
|
Thesagro: |
Adubo; Análise Química; Método; Mineralogia; Química; Química do Solo; Solo. |
|
Thesaurus NAL: |
analytical methods; soil; soil chemistry. |
|
Categoria do assunto: |
--
P Recursos Naturais, Ciências Ambientais e da Terra |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/212134/1/SNLCS-BP-2-1982.pdf
|
|
Marc: |
LEADER 02103nam a2200481 a 4500
001 1336026
005 2020-04-02
008 1982 bl uuuu u0uu1 u #d
022 $a0101-6253
100 1 $aDURIEZ, M. A. de M.
245 $aMétodo simplificado para determinação dos valores Ki e Kr na terra fina.
260 $aRio de Janeiro: EMBRAPA-SNLCS$c1982
300 $a10 p.
490 $a(EMBRAPA-SNLCS. Boletim de pesquisa, 2).
520 $aAs relacoes Ki e Kr do solo foram determinadas na terra fina seca ao ar em 70 amostras selecionadas, abrangendo varias classes de solos do Brasil, objetivando simplificar a metodologia adotada no Servico Nacional de Levantamento e Conservacao de Solos (SNLCS) para obtencao destes valores. Determinou-se o valor das relacoes Ki e Kr na fracao argila (< 2 u) em 23 amostras de solo, onde procedeu-se tambem a analise de difratometria de raios-x. Por meio da analise estatistica verificou-se ser significativa a correlacao existente entre os dois metodos quimicos empregados, ou seja, o Metodo 1 simplificado e o Metodo 2 segundo Vettori (1969). Concluiu-se pelo uso das simplificacoes aqui sugeridas, visando nao somente dinamizar a producao do laboratorio, como reduziro custo operacional do processo.
650 $aanalytical methods
650 $asoil
650 $asoil chemistry
650 $aAdubo
650 $aAnálise Química
650 $aMétodo
650 $aMineralogia
650 $aQuímica
650 $aQuímica do Solo
650 $aSolo
653 $aDeterminação de valores
653 $aDeterminação dos valores ki e kr
653 $aKI
653 $aKR
653 $akr na terra fina
653 $aMetodo de determinacao
653 $aMetodologia simplificada
653 $aMetodologia simplificada para valores ki e kr
653 $aQuímica analítica
653 $aRelação ki
653 $aSilica alumina
653 $aSilica sesquioxida
653 $aSolos
653 $aTerra fina
653 $aValor Ki
653 $aValor Kr
700 1 $aJOHAS, R. A. L.
700 1 $aBARRETO, W. de O.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Solos (CNPS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
