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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
20/02/2013 |
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Data da última atualização: |
06/06/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AGUIAR, M. I. de; FIALHO, J. S.; ARAÚJO, F. das C. S. de; CAMPANHA, M. M.; OLIVEIRA, T. S. de. |
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Afiliação: |
MONICA MATOSO CAMPANHA, CNPMS. |
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Título: |
Does biomass production depend on plant community diversity? |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Agroforestry Systems, Dordrecht, v. 87, n. 3, p. 699-711, 2013. |
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DOI: |
10.1007/s10457-012-9590-9 |
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Idioma: |
Inglês |
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Conteúdo: |
In order to ensure the sustainability of agroecosystems, biodiversity must be a priority. Agroforestry, which includes trees, is an example of such diverse systems. We evaluated plant diversity and aboveground biomass production to assess whether areas under fallow following traditional cultivation return to their initial condition. Also, plant diversity and aboveground biomass production were assessed in agroforestry systems (AFS) to determine if these were similar to unmanaged ecosystems. Another objective of the study was to observe the influence of plant diversity on aboveground biomass production in plant communities and also in the population of the dominant species, Cordia oncocalyx. Plant diversity was evaluated by assessing species richness, as well as using Shannon’s (H0) and Pielou’s (J0) indices. Aboveground plant biomass was evaluated in two AFS: agrosilvopastoral (ASP) and silvopastoral (SP), and also in a traditionally managed agricultural system (AG), areas that had been under fallow for six years (F6) and nine years (F9) and an area of unmanaged caatinga (CAT) vegetation. We observed that the ASP system had a lower diversity and number of species, especially tree species. However, it sustained the same total biomass production as CAT and fallow areas. The SP system, despite having lower H0 and J0 indices as well as lower total biomass production, had a similar number of species to CAT and cropped and fallow systems AG, F6 and F9. Plant biomass in F6 and F9 had recovered to productivity levels of unmanaged CAT vegetation; however the diversity indices were not restored to the same level. Plant diversity did not have an effect on the productivity of the agroecosystems. Likewise, annual biomass production by C. oncocalyx is not dependent upon diversity, but it is influenced by the growth stage of individuals. MenosIn order to ensure the sustainability of agroecosystems, biodiversity must be a priority. Agroforestry, which includes trees, is an example of such diverse systems. We evaluated plant diversity and aboveground biomass production to assess whether areas under fallow following traditional cultivation return to their initial condition. Also, plant diversity and aboveground biomass production were assessed in agroforestry systems (AFS) to determine if these were similar to unmanaged ecosystems. Another objective of the study was to observe the influence of plant diversity on aboveground biomass production in plant communities and also in the population of the dominant species, Cordia oncocalyx. Plant diversity was evaluated by assessing species richness, as well as using Shannon’s (H0) and Pielou’s (J0) indices. Aboveground plant biomass was evaluated in two AFS: agrosilvopastoral (ASP) and silvopastoral (SP), and also in a traditionally managed agricultural system (AG), areas that had been under fallow for six years (F6) and nine years (F9) and an area of unmanaged caatinga (CAT) vegetation. We observed that the ASP system had a lower diversity and number of species, especially tree species. However, it sustained the same total biomass production as CAT and fallow areas. The SP system, despite having lower H0 and J0 indices as well as lower total biomass production, had a similar number of species to CAT and cropped and fallow systems AG, F6 and F9. Plant biomass in F6 and F9 h... Mostrar Tudo |
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Palavras-Chave: |
Agroecologia. |
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Thesagro: |
Ecologia vegetal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/158878/1/Does-biomass-1.pdf
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Marc: |
LEADER 02478naa a2200205 a 4500
001 1950111
005 2017-06-06
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1007/s10457-012-9590-9$2DOI
100 1 $aAGUIAR, M. I. de
245 $aDoes biomass production depend on plant community diversity?$h[electronic resource]
260 $c2013
520 $aIn order to ensure the sustainability of agroecosystems, biodiversity must be a priority. Agroforestry, which includes trees, is an example of such diverse systems. We evaluated plant diversity and aboveground biomass production to assess whether areas under fallow following traditional cultivation return to their initial condition. Also, plant diversity and aboveground biomass production were assessed in agroforestry systems (AFS) to determine if these were similar to unmanaged ecosystems. Another objective of the study was to observe the influence of plant diversity on aboveground biomass production in plant communities and also in the population of the dominant species, Cordia oncocalyx. Plant diversity was evaluated by assessing species richness, as well as using Shannon’s (H0) and Pielou’s (J0) indices. Aboveground plant biomass was evaluated in two AFS: agrosilvopastoral (ASP) and silvopastoral (SP), and also in a traditionally managed agricultural system (AG), areas that had been under fallow for six years (F6) and nine years (F9) and an area of unmanaged caatinga (CAT) vegetation. We observed that the ASP system had a lower diversity and number of species, especially tree species. However, it sustained the same total biomass production as CAT and fallow areas. The SP system, despite having lower H0 and J0 indices as well as lower total biomass production, had a similar number of species to CAT and cropped and fallow systems AG, F6 and F9. Plant biomass in F6 and F9 had recovered to productivity levels of unmanaged CAT vegetation; however the diversity indices were not restored to the same level. Plant diversity did not have an effect on the productivity of the agroecosystems. Likewise, annual biomass production by C. oncocalyx is not dependent upon diversity, but it is influenced by the growth stage of individuals.
650 $aEcologia vegetal
653 $aAgroecologia
700 1 $aFIALHO, J. S.
700 1 $aARAÚJO, F. das C. S. de
700 1 $aCAMPANHA, M. M.
700 1 $aOLIVEIRA, T. S. de
773 $tAgroforestry Systems, Dordrecht$gv. 87, n. 3, p. 699-711, 2013.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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Registro |
Volume |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Oriental; Embrapa Florestas. |
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Data corrente: |
08/08/2012 |
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Data da última atualização: |
03/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CARNEIRO, F. S.; LACERDA, A. E. B. de; LEMES, M. R.; GRIBEL, R.; KANASHIRO, M.; SEBBENN, A. M. |
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Afiliação: |
FS CARNEIRO, Faucldade de Ilha Solteira; ANDRE EDUARDO BISCAIA DE LACERDA, CNPF; M. R. LEMES, Instituto de Pesquisas Jardim Botânico do Rio de Janeiro; R. GRIBEL, Instituto de Pesquisas Jardim Botânico do Rio de Janeiro; MILTON KANASHIRO, CPATU; ALEXANDRE MAGNO SEBBENN, INSTITUTO FLORESTAL DE SÃO PAULO. |
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Título: |
Mendelian inheritance, linkage and genotypic disequilibrium in microsatellite loci isolated from Hymenaea courbaril (Leguminosae). |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 11, n. 3, p. 1942-1948, 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The Neotropical tree Hymenaea courbaril, locally known as Jatobá, is a valuable source of lumber and also produces comestible and medicinal fruit. We characterized Mendelian inheritance, linkage and genotypic disequilibrium at nine microsatellite loci isolated from H. courbaril, in order to determine if they would provide accurate estimates of population genetic parameters of this important Amazon species. The study was made on 250 open-pollinated offspring originated from 14 seed trees. Only one of nine loci presented significant deviation from the expected Mendelian segregation (1:1). Genotypic disequilibrium between pairwise loci was investigated based on samples from 55 adult and 56 juvenile trees. No genetic linkage between any paired loci was observed. After Bonferroni’s corrections for multiple tests, we found no evidence of genotypic disequilibrium between pairs of loci. We conclude that this set of loci can be used for genetic diversity/ structure, mating system, gene flow, and parentage analyses in H. courbaril populations. |
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Palavras-Chave: |
Desequilíbrio genotípico; Herança mendeliana; Microssatélite. |
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Thesagro: |
Hymenaea Courbaril; Leguminosae. |
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Categoria do assunto: |
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K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/63267/1/2012-Andre-GMR-Mendelian.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/72699/1/Menendelian-gmr2014.pdf
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Marc: |
LEADER 01824naa a2200241 a 4500
001 1930832
005 2018-01-03
008 2012 bl uuuu u00u1 u #d
100 1 $aCARNEIRO, F. S.
245 $aMendelian inheritance, linkage and genotypic disequilibrium in microsatellite loci isolated from Hymenaea courbaril (Leguminosae).$h[electronic resource]
260 $c2012
520 $aThe Neotropical tree Hymenaea courbaril, locally known as Jatobá, is a valuable source of lumber and also produces comestible and medicinal fruit. We characterized Mendelian inheritance, linkage and genotypic disequilibrium at nine microsatellite loci isolated from H. courbaril, in order to determine if they would provide accurate estimates of population genetic parameters of this important Amazon species. The study was made on 250 open-pollinated offspring originated from 14 seed trees. Only one of nine loci presented significant deviation from the expected Mendelian segregation (1:1). Genotypic disequilibrium between pairwise loci was investigated based on samples from 55 adult and 56 juvenile trees. No genetic linkage between any paired loci was observed. After Bonferroni’s corrections for multiple tests, we found no evidence of genotypic disequilibrium between pairs of loci. We conclude that this set of loci can be used for genetic diversity/ structure, mating system, gene flow, and parentage analyses in H. courbaril populations.
650 $aHymenaea Courbaril
650 $aLeguminosae
653 $aDesequilíbrio genotípico
653 $aHerança mendeliana
653 $aMicrossatélite
700 1 $aLACERDA, A. E. B. de
700 1 $aLEMES, M. R.
700 1 $aGRIBEL, R.
700 1 $aKANASHIRO, M.
700 1 $aSEBBENN, A. M.
773 $tGenetics and Molecular Research$gv. 11, n. 3, p. 1942-1948, 2012.
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Embrapa Florestas (CNPF) |
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