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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
11/12/2023 |
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Autoria: |
SMITH, A. D. |
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Afiliação: |
ARTHUR D. SMITH, Utah State University and Utah State Department of Fish and Game. |
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Título: |
Determining common use grazing capacities by application of the key species concept. |
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Ano de publicação: |
1965 |
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Fonte/Imprenta: |
Journal Range Management, v. 18, n. 4, p. 196-201, Jul. 1965. |
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Idioma: |
Inglês |
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Conteúdo: |
Correct substitution rates of one grazing animal for another under common use are uniform, being governed at any point by the utilization standard of some single species. This key species may vary at different levels of animal combinations, thus changing the rate of substitution to another but still constant rate. Under certain conditions, common use can add capacity in one direction only, e.g. when the animal to which the range is less suited is substituted for the other. In this case the best suited animal alone provides maximum grazing capacity. The capacity under common use may be greater than that realized with the less suited animal alone, or greater than either animal alone, depending upon the particular combination of animal numbers that are present and the particular range. No blanket statement may be made that common use increases grazing capacity. Each situation must be determined independently upon the basis of animal preferences and the forage present. Administrative problems and social objectives, which were not considered here, may justify allocations of range resources on other bases than grazing capacity. Table 1. Forage factors reported by Cook (1954) reanalyzed to illustrate indicator species concept; Table 2. Utilization and percent of diets of major forage species for deer (D) and sheep (S) on study area in Logan Canyon, Utah; Table 3. Calculated grazing capacities of a range for selected combinations of deer and sheep with two key species; Table 4. Utilization by deer and cattle on a deer winter range near Fillmore, Utah, used by cattle spring and fall and calculated forage factors under common use; Figure 1. Theoretical cumulative utilization of three plant species during the grazing season; Figure 2. Substitution curves between mule deer an(l cattle near Fillmiore, Utah, and mule deer and sheep near Logan, tUtah; FIigure 3. Theoretical substitution curves under five different situations. MenosCorrect substitution rates of one grazing animal for another under common use are uniform, being governed at any point by the utilization standard of some single species. This key species may vary at different levels of animal combinations, thus changing the rate of substitution to another but still constant rate. Under certain conditions, common use can add capacity in one direction only, e.g. when the animal to which the range is less suited is substituted for the other. In this case the best suited animal alone provides maximum grazing capacity. The capacity under common use may be greater than that realized with the less suited animal alone, or greater than either animal alone, depending upon the particular combination of animal numbers that are present and the particular range. No blanket statement may be made that common use increases grazing capacity. Each situation must be determined independently upon the basis of animal preferences and the forage present. Administrative problems and social objectives, which were not considered here, may justify allocations of range resources on other bases than grazing capacity. Table 1. Forage factors reported by Cook (1954) reanalyzed to illustrate indicator species concept; Table 2. Utilization and percent of diets of major forage species for deer (D) and sheep (S) on study area in Logan Canyon, Utah; Table 3. Calculated grazing capacities of a range for selected combinations of deer and sheep with two key species; Table 4. Util... Mostrar Tudo |
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Palavras-Chave: |
Big game; Common Use; Grassland; Grazing animal; Grazing Capacities; Key Species Concept; Management; Range Production; Substitution Rates. |
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Thesagro: |
Bovino; Caprino; Manejo; Nutricao animal; Pastagem Nativa. |
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Thesaurus Nal: |
Agropyron; Animal nutrition; Bromus; Cattle; Elymus; Grazing; Harvesting; Lathyrus; Sheep; Symphoricarpos; Thalictrum. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03005naa a2200421 a 4500
001 1520485
005 2023-12-11
008 1965 bl uuuu u00u1 u #d
100 1 $aSMITH, A. D.
245 $aDetermining common use grazing capacities by application of the key species concept.
260 $c1965
520 $aCorrect substitution rates of one grazing animal for another under common use are uniform, being governed at any point by the utilization standard of some single species. This key species may vary at different levels of animal combinations, thus changing the rate of substitution to another but still constant rate. Under certain conditions, common use can add capacity in one direction only, e.g. when the animal to which the range is less suited is substituted for the other. In this case the best suited animal alone provides maximum grazing capacity. The capacity under common use may be greater than that realized with the less suited animal alone, or greater than either animal alone, depending upon the particular combination of animal numbers that are present and the particular range. No blanket statement may be made that common use increases grazing capacity. Each situation must be determined independently upon the basis of animal preferences and the forage present. Administrative problems and social objectives, which were not considered here, may justify allocations of range resources on other bases than grazing capacity. Table 1. Forage factors reported by Cook (1954) reanalyzed to illustrate indicator species concept; Table 2. Utilization and percent of diets of major forage species for deer (D) and sheep (S) on study area in Logan Canyon, Utah; Table 3. Calculated grazing capacities of a range for selected combinations of deer and sheep with two key species; Table 4. Utilization by deer and cattle on a deer winter range near Fillmore, Utah, used by cattle spring and fall and calculated forage factors under common use; Figure 1. Theoretical cumulative utilization of three plant species during the grazing season; Figure 2. Substitution curves between mule deer an(l cattle near Fillmiore, Utah, and mule deer and sheep near Logan, tUtah; FIigure 3. Theoretical substitution curves under five different situations.
650 $aAgropyron
650 $aAnimal nutrition
650 $aBromus
650 $aCattle
650 $aElymus
650 $aGrazing
650 $aHarvesting
650 $aLathyrus
650 $aSheep
650 $aSymphoricarpos
650 $aThalictrum
650 $aBovino
650 $aCaprino
650 $aManejo
650 $aNutricao animal
650 $aPastagem Nativa
653 $aBig game
653 $aCommon Use
653 $aGrassland
653 $aGrazing animal
653 $aGrazing Capacities
653 $aKey Species Concept
653 $aManagement
653 $aRange Production
653 $aSubstitution Rates
773 $tJournal Range Management$gv. 18, n. 4, p. 196-201, Jul. 1965.
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Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 6 | |
| 3. |  | MAGRINI, F. E.; SPECHT, A.; GAIO, J.; GIRELLI, C. P.; MIGUES, I.; HEINZEN, H.; SARTORI, V. C.; CESIO, V. Viability of Cabralea canjerana extracts to control the South American fruit fly, Anastrepha fraterculus. Journal of Insect Science, v. 14, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Cerrados. |
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| 4. | | MAGRINI, F. E.; SPECHT, A.; GAIO, J.; GIRELLI, C. P.; MIGUES, I.; HEINZEN, H.; SALDAÑA, J.; SARTORI, V. C.; CESIO, V. Antifeedant activity and effects of fruits and seeds extracts of Cabralea canjerana canjerana (Vell.) Mart. (Meliaceae) on the immature stages of the fall armyworm Spodoptera frugiperda (JE Smith). Industrial Crops and Products, v. 65, p. 150-158, 2015. p. 150-158| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Cerrados. |
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| 5. | | RECH-CAINELLI, V.; BARROS, N. M. de; GIANNI, S. G.; SBEGHEN-LOSS, A. C.; HEINZEN, H.; DÍAZ, A. R.; MIGUES, I.; SPECHT, A.; CESIO, M. V. Antifeedant and repellent effects of neotropical Solanum extracts on drywood termites (Cryptotermes brevis, Isoptera: Kalotermitidae). Sociobiology, Feira de Santana, v. 62, n. 1, p. 82-87, March 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Cerrados. |
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| 6. | | MIGUES, I.; BARROS, N. M.; RECH, V.; DUTRA, C.; DÍAS, A. R.; MALAQUIAS, J. V.; SPECHT, A.; HEINZEN, H.; CESIO, M. V. Effects on the development of Spodoptera frugiperda feeding on diets spiked with Solanum sisymbriifolium extracts. Eclética Química Journa, v. 45, n. 2, 2020. p. 33-43| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 6 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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