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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
11/09/1997 |
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Data da última atualização: |
05/04/2017 |
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Autoria: |
ANGERMEIR, P. L.; KARR, J. R. |
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Título: |
Applying an index of biotic integrity based on stream-fish communities: considerations in sampling and interpretation. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
North American Journal of Fisheries Management, v.6, p.418-429, 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
Physical and chemical monitoring of water bodies is relatively common. However, water resource assessment suffers from lack of integrative and reliable measures of the biotic condition of aquatic systems. This situation persists despite the fundamentally biological nature of water resource degradation. We examined three aspects of applying an index of biotic integrity (IBI) that uses attributes of fish communities to assess stream degradation: (1) relative contributions of individual metrics to the final IBI assessment; (2) effects of sampling effort on the IBI; and (3) effects of including young-of-year fish data on IBI computations. relative contributions of individual metrics to IBI assessment varied substantially among data sets from Illinois, Ohio, and West Virginia, and variation in contributions reflected differences in ranges of metric scores and types of degradation being assessed. No metric was consistently best or worsta at detecting degradation, and metrics did not appear redundant with respect to each other. The IBI scores increased with increasing lenght of stream sampled, largely due to increase in the number of species accumulated in fish collections. The IBI scores from short reaches were more variable than scores from long reaches; adequate sample reaches should contain several pool-riffle sequences. Exclusion of young-of-year fish from IBI computations typically reduced IBI scores by 2-10 units; the magnitude of reduction reflected the proportion of young of year in the samples. Species-richness metrics were affected more by exclusion of young of year than other metrics. The IBI appears to be broadly useful to water resource managers and, if used in conjunction with other measures of water and habitat quality, should provide a comprehensive approach for assessing resource quality. MenosPhysical and chemical monitoring of water bodies is relatively common. However, water resource assessment suffers from lack of integrative and reliable measures of the biotic condition of aquatic systems. This situation persists despite the fundamentally biological nature of water resource degradation. We examined three aspects of applying an index of biotic integrity (IBI) that uses attributes of fish communities to assess stream degradation: (1) relative contributions of individual metrics to the final IBI assessment; (2) effects of sampling effort on the IBI; and (3) effects of including young-of-year fish data on IBI computations. relative contributions of individual metrics to IBI assessment varied substantially among data sets from Illinois, Ohio, and West Virginia, and variation in contributions reflected differences in ranges of metric scores and types of degradation being assessed. No metric was consistently best or worsta at detecting degradation, and metrics did not appear redundant with respect to each other. The IBI scores increased with increasing lenght of stream sampled, largely due to increase in the number of species accumulated in fish collections. The IBI scores from short reaches were more variable than scores from long reaches; adequate sample reaches should contain several pool-riffle sequences. Exclusion of young-of-year fish from IBI computations typically reduced IBI scores by 2-10 units; the magnitude of reduction reflected the proportion of young ... Mostrar Tudo |
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Palavras-Chave: |
Aquatic system; Communitie; Comunidade; Index of biotic integrity; Sistema aquatico. |
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Thesagro: |
Peixe. |
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Thesaurus Nal: |
fish. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02475naa a2200217 a 4500
001 1791616
005 2017-04-05
008 1986 bl --- 0-- u #d
100 1 $aANGERMEIR, P. L.
245 $aApplying an index of biotic integrity based on stream-fish communities$bconsiderations in sampling and interpretation.
260 $c1986
520 $aPhysical and chemical monitoring of water bodies is relatively common. However, water resource assessment suffers from lack of integrative and reliable measures of the biotic condition of aquatic systems. This situation persists despite the fundamentally biological nature of water resource degradation. We examined three aspects of applying an index of biotic integrity (IBI) that uses attributes of fish communities to assess stream degradation: (1) relative contributions of individual metrics to the final IBI assessment; (2) effects of sampling effort on the IBI; and (3) effects of including young-of-year fish data on IBI computations. relative contributions of individual metrics to IBI assessment varied substantially among data sets from Illinois, Ohio, and West Virginia, and variation in contributions reflected differences in ranges of metric scores and types of degradation being assessed. No metric was consistently best or worsta at detecting degradation, and metrics did not appear redundant with respect to each other. The IBI scores increased with increasing lenght of stream sampled, largely due to increase in the number of species accumulated in fish collections. The IBI scores from short reaches were more variable than scores from long reaches; adequate sample reaches should contain several pool-riffle sequences. Exclusion of young-of-year fish from IBI computations typically reduced IBI scores by 2-10 units; the magnitude of reduction reflected the proportion of young of year in the samples. Species-richness metrics were affected more by exclusion of young of year than other metrics. The IBI appears to be broadly useful to water resource managers and, if used in conjunction with other measures of water and habitat quality, should provide a comprehensive approach for assessing resource quality.
650 $afish
650 $aPeixe
653 $aAquatic system
653 $aCommunitie
653 $aComunidade
653 $aIndex of biotic integrity
653 $aSistema aquatico
700 1 $aKARR, J. R.
773 $tNorth American Journal of Fisheries Management$gv.6, p.418-429, 1986.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| Registros recuperados : 17 | |
| 7. |  | BARBIERI, R.L. (Ed.). Cebola: ciência, arte e história. 2. ed. Brasília, DF: Embrapa Informação Tecnológica; Pelotas: Embrapa Clima Temperado, 2007. 150 p.| Tipo: Autoria/Organização/Edição de Livros |
| Biblioteca(s): Embrapa Agroindústria Tropical; Embrapa Clima Temperado. |
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| 9. | | BUSS, G. L.; WOLTER, R. C. D.; WESZ, J.; SEHN, C. F. S.; SONCINI, M. M.; SOUSA, R. O. de; SCIVITTARO, W. B. Dinâmica da redução de um planossolo alagado e teores de nutrientes na parte da aérea do arroz em função do manejo da água. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 7., 2011, Balneário Camboriú. Racionalizando recursos e ampliando oportunidades: anais. Itajaí: Epagri, 2011. p. 159-162| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 12. | | NASCIMENTO, C. S.; MACHADO, M. A.; GUIMARÃES, S. E. F.; GUIMARÃES, M. F. M.; CAMPOS, A. L.; VERNEQUE, R. da S.; LOPES, P. S. Expressão aumentada do gene S100A7 em bovinos F2 desafiados com o parasita Boophilus microplus. In: CONGRESSO BRASILEIRO DE GENÉTICA, 53., 2007, Águas de Lindóia. Resumos... Ribeirão Preto: SBG, 2007. p. 241.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 16. | | BEZERRA, E. B.; FRANÇA, D. C.; MORAIS, D. D. de S.; ROSA, M. de F.; MORAIS, J. P. S.; ARAÚJO, E. M.; WELLEN, R. M. R. Processing and properties of PCL/cotton linter compounds. Materials Research, São Carlos, v. 20, n. 2, p. 317-325, 2017.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agroindústria Tropical. |
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| Registros recuperados : 17 | |
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