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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
14/04/1999 |
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Data da última atualização: |
14/04/1999 |
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Autoria: |
GILLEN, R. L.; SMITH, E. L. |
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Afiliação: |
Assistant professor, Department of Agronomy, Oklahoma State University, Stillwater and associate professor, School of Renewable Natural Resources, University of arizona, Tucson. |
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Título: |
Evaluation of the dry-weight-rank method for determining species composition in tallgrass prairie. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Journal of Range Management, v.39, n.3, p.283-285, May 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
The dry-weight-rank (DWR) method for determining species composition of tallgrass prairie vegetation was compared to hand clipping. Species composition estimates for the 2 methods were similar in 3 of 4 trials when true ranking and previously published multipliers were used. Weighting the DWR estimates by plot total weight did not consistently improve the accuracy of the method. Observer errors reduced the accuracy of DWR, emphasizing the need for observer training. DWR estimates were generally less precise than hand clipped estimates for a given sample size but the speed of DWR would allow more samples to be taken resulting in more precise estimates in practice. |
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Palavras-Chave: |
Composicao; Composition; Dry-weight-rank; Tallgrass prairie. |
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Thesagro: |
Grama; Vegetação. |
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Thesaurus Nal: |
vegetation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01280naa a2200217 a 4500
001 1795212
005 1999-04-14
008 1986 bl --- 0-- u #d
100 1 $aGILLEN, R. L.
245 $aEvaluation of the dry-weight-rank method for determining species composition in tallgrass prairie.
260 $c1986
520 $aThe dry-weight-rank (DWR) method for determining species composition of tallgrass prairie vegetation was compared to hand clipping. Species composition estimates for the 2 methods were similar in 3 of 4 trials when true ranking and previously published multipliers were used. Weighting the DWR estimates by plot total weight did not consistently improve the accuracy of the method. Observer errors reduced the accuracy of DWR, emphasizing the need for observer training. DWR estimates were generally less precise than hand clipped estimates for a given sample size but the speed of DWR would allow more samples to be taken resulting in more precise estimates in practice.
650 $avegetation
650 $aGrama
650 $aVegetação
653 $aComposicao
653 $aComposition
653 $aDry-weight-rank
653 $aTallgrass prairie
700 1 $aSMITH, E. L.
773 $tJournal of Range Management$gv.39, n.3, p.283-285, May 1986.
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Registro original: |
Embrapa Pantanal (CPAP) |
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