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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
22/03/1995 |
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Data da última atualização: |
18/07/2018 |
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Autoria: |
LIU, J. |
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Afiliação: |
University of Georgia (Athens, Georgia). |
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Título: |
Ecolecon: a spatially-explicit model for ecological economics of species conservation in complex forest landscapes. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Athens: University of Georgia, 1992. |
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Páginas: |
143p. |
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Idioma: |
Inglês |
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Notas: |
Ph.D. Dissertation. |
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Conteúdo: |
ECOLECON is a spatially-explicit, object-oriented computer simulation model which simulates animal population dynamics and economic outputs based forest landscape structure and timber management schemes. Simulation showed that forest landscape structure and management options such as rotation lengths influenced both population sizes of Bachman's Sparrow (Aimophila aestivalis) and economic returns from timber harvest. The sparrow population size and economic income were often maximized by different managements strategies. For example, the land expectation value reached maximum when a rotation lenght was 20 years. However, when a rotation leght was shorter than 80 years, population sizes had a negative linear relationship with rotation lenghts. As the amount of mature habitat increased, sparrow population sizes increased but annual net incomes decreased. Fragmentation with small amount of mature habitat caused lower population size, but fragmentation of a large amount of mature habitat resulted in larger population size. Placement of the mature habitat within the landscapes resulted in large differences in population size. Larger stand sizes produced higher economic revenues, but the effect of stand size on population size was confounded by the amount of mature habitat. When 8% of the landscape was mature habitat, population size was maximized with 20-ha stands. The simulation results have significant implications for balancing wildlife populations and economic revenues through designing and managing forested landscapes. MenosECOLECON is a spatially-explicit, object-oriented computer simulation model which simulates animal population dynamics and economic outputs based forest landscape structure and timber management schemes. Simulation showed that forest landscape structure and management options such as rotation lengths influenced both population sizes of Bachman's Sparrow (Aimophila aestivalis) and economic returns from timber harvest. The sparrow population size and economic income were often maximized by different managements strategies. For example, the land expectation value reached maximum when a rotation lenght was 20 years. However, when a rotation leght was shorter than 80 years, population sizes had a negative linear relationship with rotation lenghts. As the amount of mature habitat increased, sparrow population sizes increased but annual net incomes decreased. Fragmentation with small amount of mature habitat caused lower population size, but fragmentation of a large amount of mature habitat resulted in larger population size. Placement of the mature habitat within the landscapes resulted in large differences in population size. Larger stand sizes produced higher economic revenues, but the effect of stand size on population size was confounded by the amount of mature habitat. When 8% of the landscape was mature habitat, population size was maximized with 20-ha stands. The simulation results have significant implications for balancing wildlife populations and economic revenues throug... Mostrar Tudo |
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Palavras-Chave: |
Conservacao de especie; Conservation; Ecolecon; Economia ecologica; Forest; Geographical information systems; GIS; Simulation model. |
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Thesagro: |
Biodiversidade; Ecologia; Floresta; Modelo de Simulação. |
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Thesaurus Nal: |
biodiversity; ecological economics; landscapes. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02414nam a2200313 a 4500
001 1783902
005 2018-07-18
008 1992 bl uuuu m 00u1 u #d
100 1 $aLIU, J.
245 $aEcolecon$ba spatially-explicit model for ecological economics of species conservation in complex forest landscapes.
260 $aAthens: University of Georgia$c1992
300 $a143p.
500 $aPh.D. Dissertation.
520 $aECOLECON is a spatially-explicit, object-oriented computer simulation model which simulates animal population dynamics and economic outputs based forest landscape structure and timber management schemes. Simulation showed that forest landscape structure and management options such as rotation lengths influenced both population sizes of Bachman's Sparrow (Aimophila aestivalis) and economic returns from timber harvest. The sparrow population size and economic income were often maximized by different managements strategies. For example, the land expectation value reached maximum when a rotation lenght was 20 years. However, when a rotation leght was shorter than 80 years, population sizes had a negative linear relationship with rotation lenghts. As the amount of mature habitat increased, sparrow population sizes increased but annual net incomes decreased. Fragmentation with small amount of mature habitat caused lower population size, but fragmentation of a large amount of mature habitat resulted in larger population size. Placement of the mature habitat within the landscapes resulted in large differences in population size. Larger stand sizes produced higher economic revenues, but the effect of stand size on population size was confounded by the amount of mature habitat. When 8% of the landscape was mature habitat, population size was maximized with 20-ha stands. The simulation results have significant implications for balancing wildlife populations and economic revenues through designing and managing forested landscapes.
650 $abiodiversity
650 $aecological economics
650 $alandscapes
650 $aBiodiversidade
650 $aEcologia
650 $aFloresta
650 $aModelo de Simulação
653 $aConservacao de especie
653 $aConservation
653 $aEcolecon
653 $aEconomia ecologica
653 $aForest
653 $aGeographical information systems
653 $aGIS
653 $aSimulation model
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
10/09/2015 |
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Data da última atualização: |
15/02/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
CARNEIRO, V. A.; LINHARES, D. C.; SILVA, R. A. da; FURTADO, J. I. F.; PARRELLA, N. N. L. D.; PARRELLA, R. A. da C.; SCHAFFERT, R. E. |
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Afiliação: |
RAFAEL AUGUSTO DA COSTA PARRELLA, CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS. |
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Título: |
Período de utilização industrial de cultivares de sorgo sacarino na região central de Minas Gerais. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 8., 2015, Goiânia. O melhoramento de plantas, o futuro da agricultura e a soberania nacional: anais. Goiânia: UFG: SBMP, 2015. |
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Idioma: |
Português |
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Palavras-Chave: |
Curva de maturação. |
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Thesagro: |
Sorghum bicolor. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/129364/1/Periodo-utilizacao.pdf
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Marc: |
LEADER 00770nam a2200193 a 4500
001 2023651
005 2016-02-15
008 2015 bl uuuu u00u1 u #d
100 1 $aCARNEIRO, V. A.
245 $aPeríodo de utilização industrial de cultivares de sorgo sacarino na região central de Minas Gerais.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DE MELHORAMENTO DE PLANTAS, 8., 2015, Goiânia. O melhoramento de plantas, o futuro da agricultura e a soberania nacional: anais. Goiânia: UFG: SBMP$c2015
650 $aSorghum bicolor
653 $aCurva de maturação
700 1 $aLINHARES, D. C.
700 1 $aSILVA, R. A. da
700 1 $aFURTADO, J. I. F.
700 1 $aPARRELLA, N. N. L. D.
700 1 $aPARRELLA, R. A. da C.
700 1 $aSCHAFFERT, R. E.
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Embrapa Milho e Sorgo (CNPMS) |
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