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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
10/01/1996 |
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Data da última atualização: |
23/09/2013 |
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Autoria: |
GRANT, W. E.; FRENCH, N. R. |
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Título: |
Evaluation of the role of small mammals in grassland ecosystems: a modeling approach. |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
Ecological Modelling, v.8, p.15-37, Jan. 1980. |
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Idioma: |
Inglês |
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Conteúdo: |
Development of a grassland ecosystem simulation model quantifying mammal interaction with other ecosystem components indicates their influence on community structure and function. the approach has been to: (1) identify potential areas of small mammal interaction with system function; (2) quantify the interactions; (3) construct a model representing these interactions; (4) synthesize quantitative information on small mammal interactions with auxiliary information to obtain a mathematical representation of the major functional aspects of an ecosystem; and (5) simulate the ecosystem to estimate overall influence of small mammals. To facilitate the identification of potential influence, six small mammal functional groups and three major ecosystem components were specified. Small mammal groups include three feeding categories: (1) herbivore, (2) carnivore, and (3) granivore; and three behavioral categories: (1) soil mover, (2) food storer, and (3) builder. The three ecosystem components include: (1) abiotic, (2) primary producer, and (3) consumer - decomposer. A six by three matrix was formed with rows representing the six small mammal groups and columns representing the three ecosystem components. Each compartment of the matrix indicates potential influences of the small mammal group on the ecosystem component. Simulations indicate that two small mammal activities have greatest impact on other ecosystem components. Upward translocation of soil has a significant positive effect on both percent bare surface soil and quantity of nitrogen in the top soil layer; and consumption of arthropods has a significant effect on arthroopod biomass dynamic. Even with extremely high small mammal densities direct comsumption has an insignificant effect on primary production. based on indices quantifying total impact of small mammals, the hypothesis that grassland ecosystem structure can be fundamentally altered by changes in the small mammal community is tentatively rejected. Ecosystem function appaeras to be affected by relatively small fluctuations in small mammal density and by certain changes in composition of the small mammal community. Routes and rates of material flow within an ecosystem are influenced by small mammals, producing subtle but quantitative changes in ecosystem dynamics which are directly or indirectly a function of small mammal population dynamics. Therefore, the hypothesis that grassland ecosystem function is responsive to changes in the small mammal community cannot be rejected. MenosDevelopment of a grassland ecosystem simulation model quantifying mammal interaction with other ecosystem components indicates their influence on community structure and function. the approach has been to: (1) identify potential areas of small mammal interaction with system function; (2) quantify the interactions; (3) construct a model representing these interactions; (4) synthesize quantitative information on small mammal interactions with auxiliary information to obtain a mathematical representation of the major functional aspects of an ecosystem; and (5) simulate the ecosystem to estimate overall influence of small mammals. To facilitate the identification of potential influence, six small mammal functional groups and three major ecosystem components were specified. Small mammal groups include three feeding categories: (1) herbivore, (2) carnivore, and (3) granivore; and three behavioral categories: (1) soil mover, (2) food storer, and (3) builder. The three ecosystem components include: (1) abiotic, (2) primary producer, and (3) consumer - decomposer. A six by three matrix was formed with rows representing the six small mammal groups and columns representing the three ecosystem components. Each compartment of the matrix indicates potential influences of the small mammal group on the ecosystem component. Simulations indicate that two small mammal activities have greatest impact on other ecosystem components. Upward translocation of soil has a significant positive effect ... Mostrar Tudo |
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Palavras-Chave: |
Community structure and function; Ecosystem; Estrutura de comunidade; Funcao; Grassland; Modelo simulado; Pequeno mamifero; Simulation model; Small mammal. |
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Thesagro: |
Ecossistema; Pastagem. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03254naa a2200265 a 4500
001 1786608
005 2013-09-23
008 1980 bl --- 0-- u #d
100 1 $aGRANT, W. E.
245 $aEvaluation of the role of small mammals in grassland ecosystems$ba modeling approach.
260 $c1980
520 $aDevelopment of a grassland ecosystem simulation model quantifying mammal interaction with other ecosystem components indicates their influence on community structure and function. the approach has been to: (1) identify potential areas of small mammal interaction with system function; (2) quantify the interactions; (3) construct a model representing these interactions; (4) synthesize quantitative information on small mammal interactions with auxiliary information to obtain a mathematical representation of the major functional aspects of an ecosystem; and (5) simulate the ecosystem to estimate overall influence of small mammals. To facilitate the identification of potential influence, six small mammal functional groups and three major ecosystem components were specified. Small mammal groups include three feeding categories: (1) herbivore, (2) carnivore, and (3) granivore; and three behavioral categories: (1) soil mover, (2) food storer, and (3) builder. The three ecosystem components include: (1) abiotic, (2) primary producer, and (3) consumer - decomposer. A six by three matrix was formed with rows representing the six small mammal groups and columns representing the three ecosystem components. Each compartment of the matrix indicates potential influences of the small mammal group on the ecosystem component. Simulations indicate that two small mammal activities have greatest impact on other ecosystem components. Upward translocation of soil has a significant positive effect on both percent bare surface soil and quantity of nitrogen in the top soil layer; and consumption of arthropods has a significant effect on arthroopod biomass dynamic. Even with extremely high small mammal densities direct comsumption has an insignificant effect on primary production. based on indices quantifying total impact of small mammals, the hypothesis that grassland ecosystem structure can be fundamentally altered by changes in the small mammal community is tentatively rejected. Ecosystem function appaeras to be affected by relatively small fluctuations in small mammal density and by certain changes in composition of the small mammal community. Routes and rates of material flow within an ecosystem are influenced by small mammals, producing subtle but quantitative changes in ecosystem dynamics which are directly or indirectly a function of small mammal population dynamics. Therefore, the hypothesis that grassland ecosystem function is responsive to changes in the small mammal community cannot be rejected.
650 $aEcossistema
650 $aPastagem
653 $aCommunity structure and function
653 $aEcosystem
653 $aEstrutura de comunidade
653 $aFuncao
653 $aGrassland
653 $aModelo simulado
653 $aPequeno mamifero
653 $aSimulation model
653 $aSmall mammal
700 1 $aFRENCH, N. R.
773 $tEcological Modelling$gv.8, p.15-37, Jan. 1980.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Biblioteca |
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Origem |
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Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo; Embrapa Pecuária Sudeste; Embrapa Solos. |
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Data corrente: |
13/11/2018 |
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Data da última atualização: |
11/01/2019 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
PALHARES, J. C. P.; PRADO, R. B.; VIGNA, B. B. Z.; SOUSA, S. M. de. |
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Afiliação: |
JULIO CESAR PASCALE PALHARES, CPPSE; RACHEL BARDY PRADO, CNPS; BIANCA BACCILI ZANOTTO VIGNA, CPPSE; SYLVIA MORAIS DE SOUSA TINOCO, CNPMS. |
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Título: |
Gestão eficiente dos recursos naturais. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: PALHARES, J. C. P.; OLIVEIRA, V. B.V. de; FREIRE JUNIOR, M.; CERDEIRA, L. A.; PRADO, H. A. (Ed.). Consumo e produção responsáveis: contribuições da Embrapa. Brasília, DF: Embrapa, 2018. |
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Páginas: |
Cap. 3 |
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Série: |
(Objetivos de Desenvolvimento Sustentável, 12) |
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Idioma: |
Português |
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Notas: |
E-book. |
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Conteúdo: |
Este capítulo se propõe a apresentar uma contextualização e problematização sobre diversos aspectos relacionados à meta 2 do Objetivo de Desenvolvimento Sustentável 12 (ODS 12), que se refere a "Alcançar a gestão sustentável e o uso eficiente dos recursos naturais até 2030". Também se propõe a descrever e discutir os principais produtos, processos e serviços que a Empresa Brasileira de Pesquisa Agropecuária (Embrapa) tem disponibilizado para as cadeias agroindustriais e para a sociedade brasileira, a fim de contribuir com o cumprimento dessa meta e gerar informações para avaliação dos seus indicadores. Foram agrupados nos seguintes temas: eficiência do uso da água na agropecuária, conservação dos solos, uso eficiente dos recursos genéticos vegetais, uso de fertilizantes e avaliações sistêmicas de produtos e processos. |
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Palavras-Chave: |
Cadeias agroindustriais; Gestão sustentável; Uso de fertilizantes. |
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Thesagro: |
Conservação da Água; Conservação do Solo; Desenvolvimento Sustentável; Recurso Natural. |
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Thesaurus NAL: |
Environmental sustainability; Sustainable development. |
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Categoria do assunto: |
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B Sociologia Rural |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/188398/1/Gestao-eficiente-dos-recursos-naturais.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/185931/1/Gestao-eficiente.pdf
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Marc: |
LEADER 01902naa a2200301 a 4500
001 2101531
005 2019-01-11
008 2018 bl uuuu u00u1 u #d
100 1 $aPALHARES, J. C. P.
245 $aGestão eficiente dos recursos naturais.$h[electronic resource]
260 $c2018
300 $aCap. 3
490 $a(Objetivos de Desenvolvimento Sustentável, 12)
500 $aE-book.
520 $aEste capítulo se propõe a apresentar uma contextualização e problematização sobre diversos aspectos relacionados à meta 2 do Objetivo de Desenvolvimento Sustentável 12 (ODS 12), que se refere a "Alcançar a gestão sustentável e o uso eficiente dos recursos naturais até 2030". Também se propõe a descrever e discutir os principais produtos, processos e serviços que a Empresa Brasileira de Pesquisa Agropecuária (Embrapa) tem disponibilizado para as cadeias agroindustriais e para a sociedade brasileira, a fim de contribuir com o cumprimento dessa meta e gerar informações para avaliação dos seus indicadores. Foram agrupados nos seguintes temas: eficiência do uso da água na agropecuária, conservação dos solos, uso eficiente dos recursos genéticos vegetais, uso de fertilizantes e avaliações sistêmicas de produtos e processos.
650 $aEnvironmental sustainability
650 $aSustainable development
650 $aConservação da Água
650 $aConservação do Solo
650 $aDesenvolvimento Sustentável
650 $aRecurso Natural
653 $aCadeias agroindustriais
653 $aGestão sustentável
653 $aUso de fertilizantes
700 1 $aPRADO, R. B.
700 1 $aVIGNA, B. B. Z.
700 1 $aSOUSA, S. M. de
773 $tIn: PALHARES, J. C. P.; OLIVEIRA, V. B.V. de; FREIRE JUNIOR, M.; CERDEIRA, L. A.; PRADO, H. A. (Ed.). Consumo e produção responsáveis: contribuições da Embrapa. Brasília, DF: Embrapa, 2018.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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