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Registro Completo |
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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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Registro original: |
Embrapa Florestas (CNPF) |
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| Registros recuperados : 61 | |
| 8. |  | P. NETO, J.; SOARES, P. C.; SOARES, P. C.; BATISTA, A. M. V.; ANDRADE, S. F. J.; ANDRADE, R. P. X.; LUCENA, R. B.; GUIM, A. Balanço hídrico e excreção renal de metabólitos sem ovinos alimentados com palma forrageira (Napolea cochenillifera Salm Dyck). Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 4, p. 322-328, abr. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 10. | | SOARES, P. C.; SEDIYAMA, C. S.; CRUZ, C. D.; SILVA, J. C. Avaliação de genótipos de arroz em várzeas, com e sem irrigação controlada. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 30, n. 4, p. 489-496, abr. 1995. Título em inglês: Yield comparison of rice genotypes in humid and irrigated lowland.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 15. | | MARRENJO, G. J.; PÁDUA, E. J. de; SILVA, C. A.; SOARES, P. C.; ZINN, Y. L. Impactos do cultivo por longo tempo de arroz inundado em Gleissolos. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 51, n. 8, p. 967-977, ago. 2016. Título em inglês: Impact of increasing atmospheric concentration of carbon dioxide on coffee leaf rust and coffee plant growth.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 18. | | SOARES, P. C.; CORNÉLIO, V. M. de O.; SOARES, A. A.; RANGEL, P. H. N.; REIS, M. de S. BRSMG Ouro Minas: nova cultivar de arroz recomendada para cultivo sob irrigação por inundação contínua. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 2.; REUNIÃO DA CULTURA DO ARROZ IRRIGADO, 24., 2001, Porto Alegre. Anais... Porto Alegre: IRGA, 2001. p. 6-8.| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 19. | | SANTOS, P. G.; SOARES, P. C.; SOARES, A. A.; MORAIS, O. P.; CORNELIO, V. M. de O. Estimativa do progresso genético do Programa de Melhoramento de Arroz Irrigado desenvolvido em Minas Gerais no período de 1974 a 1996. In: REUNIAO DA CULTURA DO ARROZ IRRIGADO, 22., 1997, Balneario Camboriu, SC. Anais. Itajai: EPAGRI, 1997. p. 27-30.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 20. | | BORGES, V.; SOARES, A. A.; RESENDE, M. D. V. de; REIS, M. S.; CORNÉLIO, V. M. O.; SOARES, P. C. Progresso genético do programa de melhoramento de arroz de terras altas de Minas Gerais utilizando modelos mistos. Revista Brasileira de Biometria, São Paulo, v. 27, n. 3, p. 478-490, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 61 | |
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