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| Registros recuperados : 5 | |
| 2. |  | CAMACHO, M. A.; BELTRAMIN, R. C.; RUIZ, J. G. C. L.; ECCO, M.; MARCANTE, N. C.; PAREDES JÚNIOR, F. P. Adubação nitrogenada em algodão transgênico no sistema de plantio convencional. In: CONGRESSO BRASILEIRO DO ALGODÃO, 7., 2009, Foz do Iguaçu. Sustentabilidade da cotonicultura brasileira e expansão dos mercados: anais. Campina Grande: Embrapa Algodão, 2009. 1 CD-ROM| Biblioteca(s): Embrapa Algodão. |
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| 3. | | CAMACHO, M. A.; ECCO, M.; RUIZ, J. G. C. L.; MARCANTE, N. C.; PAREDES JÚNIOR, F. P.; SANTOS, R. C. dos. Determinação da folha índice para avaliação do estado nutricional da cultura do algodoeiro. In: CONGRESSO BRASILEIRO DO ALGODÃO, 7., 2009, Foz do Iguaçu. Sustentabilidade da cotonicultura brasileira e expansão dos mercados: anais. Campina Grande: Embrapa Algodão, 2009. 1 CD-ROM| Biblioteca(s): Embrapa Algodão. |
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| 4. | | MARCADANTE, N. C.; SILVA, M. A. C. da; PAREDES JÚNIOR, F. P.; SANTOS, R. C. dos; ECCO, M.; RUIZ, J. G. C. L.; SCHIAVO, J. A. Efeito dos sistemas de cultivo relacionados com diferentes doses de nitrogênio sobre os componentes de produção na cultura do algodão. In: CONGRESSO BRASILEIRO DO ALGODÃO, 7., 2009, Foz do Iguaçu. Sustentabilidade da cotonicultura brasileira e expansão dos mercados: anais. Campina Grande: Embrapa Algodão, 2009. 1 CD-ROM| Biblioteca(s): Embrapa Algodão. |
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| 5. | | BATISTELLA FILHO, F.; FERREIRA, M. E.; VIEIRA, R. D.; CRUZ, M. C. P. da; CENTURION, M. A. P. da C.; SYLVESTRE, T. de B.; RUIZ, J. G. C. L. Adubação com fósforo e potássio para produção e qualidade de sementes de soja. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 48, n. 7, p. 783-790, jul. 2013. Título em inglês: Phosphorus and potassium fertilization for yield and quality of soybean seeds.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 5 | |
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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. |
Registro Completo
|
Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
02/10/2008 |
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Data da última atualização: |
02/10/2008 |
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Autoria: |
SANTOS, E. M. R.; FRANKLIN, E.; MAGNUSSON, W. E. |
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Título: |
Cost-efficiency of Sub-sampling Protocols to Evaluate Oribatid-Mite Communities in an Amazonian Savanna. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
Sampling oribatid mites in large areas using conventional methods is expensive, time-consuming,
and this constrains their use in environmental monitoring programs. We used samples collected
in 38 plots of 3.75 ha spread over 30,000 ha in an Amazonian savanna to evaluate the reduction
in costs and person-hours in sampling and sorting and to elaborate cost-effective protocols. Ten
samples per plot were collected and extracted using a Berlese-Tullgren apparatus. In the
laboratory, samples were reduced to 50, 25, 12.5 and 6.25 percent of the initial content. Fieldeffort
reduction was estimated by reducing the number of subsamples per plot. Dissimilarity
matrices were generated using Bray-Curtis, Sørensen and Chao-Sørensen indices. Correlations
between each reduced-effort dissimilarity matrix and 100 or 50 percent sorting were used as an
index of how much information was retained in reduced-effort sampling, and could still be used
in multivariate analyses. The effects of most predictor variables on mite composition were
detected in data based on every level of sample reduction. The intensive sampling was insufficient
to reveal the full oribatid-mite fauna in the savanna; as more plots were sampled, more species
were recorded. Our data indicate sub-sampling protocols for biodiversity assessment of oribatid
mites in savanna that increase field and labor efficiency, and optimize both taxonomic and
ecological aspects of the investigation.
Financial support: PPG7 6400-0021-00, PPI-INPA 1-3010, CNPq. MenosSampling oribatid mites in large areas using conventional methods is expensive, time-consuming,
and this constrains their use in environmental monitoring programs. We used samples collected
in 38 plots of 3.75 ha spread over 30,000 ha in an Amazonian savanna to evaluate the reduction
in costs and person-hours in sampling and sorting and to elaborate cost-effective protocols. Ten
samples per plot were collected and extracted using a Berlese-Tullgren apparatus. In the
laboratory, samples were reduced to 50, 25, 12.5 and 6.25 percent of the initial content. Fieldeffort
reduction was estimated by reducing the number of subsamples per plot. Dissimilarity
matrices were generated using Bray-Curtis, Sørensen and Chao-Sørensen indices. Correlations
between each reduced-effort dissimilarity matrix and 100 or 50 percent sorting were used as an
index of how much information was retained in reduced-effort sampling, and could still be used
in multivariate analyses. The effects of most predictor variables on mite composition were
detected in data based on every level of sample reduction. The intensive sampling was insufficient
to reveal the full oribatid-mite fauna in the savanna; as more plots were sampled, more species
were recorded. Our data indicate sub-sampling protocols for biodiversity assessment of oribatid
mites in savanna that increase field and labor efficiency, and optimize both taxonomic and
ecological aspects of the investigation.
Financial support: PPG7 6400-0021-00, PPI-INP... Mostrar Tudo |
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Categoria do assunto: |
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Marc: |
LEADER 02225naa a2200145 a 4500
001 1315002
005 2008-10-02
008 2008 bl uuuu u00u1 u #d
100 1 $aSANTOS, E. M. R.
245 $aCost-efficiency of Sub-sampling Protocols to Evaluate Oribatid-Mite Communities in an Amazonian Savanna.
260 $c2008
520 $aSampling oribatid mites in large areas using conventional methods is expensive, time-consuming, and this constrains their use in environmental monitoring programs. We used samples collected in 38 plots of 3.75 ha spread over 30,000 ha in an Amazonian savanna to evaluate the reduction in costs and person-hours in sampling and sorting and to elaborate cost-effective protocols. Ten samples per plot were collected and extracted using a Berlese-Tullgren apparatus. In the laboratory, samples were reduced to 50, 25, 12.5 and 6.25 percent of the initial content. Fieldeffort reduction was estimated by reducing the number of subsamples per plot. Dissimilarity matrices were generated using Bray-Curtis, Sørensen and Chao-Sørensen indices. Correlations between each reduced-effort dissimilarity matrix and 100 or 50 percent sorting were used as an index of how much information was retained in reduced-effort sampling, and could still be used in multivariate analyses. The effects of most predictor variables on mite composition were detected in data based on every level of sample reduction. The intensive sampling was insufficient to reveal the full oribatid-mite fauna in the savanna; as more plots were sampled, more species were recorded. Our data indicate sub-sampling protocols for biodiversity assessment of oribatid mites in savanna that increase field and labor efficiency, and optimize both taxonomic and ecological aspects of the investigation. Financial support: PPG7 6400-0021-00, PPI-INPA 1-3010, CNPq.
700 1 $aFRANKLIN, E.
700 1 $aMAGNUSSON, W. E.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
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