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Registro Completo |
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
27/07/2020 |
Data da última atualização: |
18/02/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
QUEIROZ, M. G. de; SILVA, T. G. F. da; SOUZA, C. A. A. de; JARDIM, A. M. daa R. F.; ARAÚJO JÚNIOR, G. do N.; SOUZA, L. S. B. de; MOURA, M. S. B. de. |
Afiliação: |
Maria Gabriela de Queiroz; Thieres George Freire da Silva; Carlos André Alves de Souza; Alexandre Maniçoba da Rosa Ferraz Jardim; George do Nascimento Araújo Júnior; Luciana Sandra Bastos de Souza; MAGNA SOELMA BESERRA DE MOURA, CPATSA. |
Título: |
Composition of Caatinga species under anthropic disturbance and its correlation with rainfall partitioning. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Floresta e Ambiente, v. 28, n. 1, e20190044, 2021. |
DOI: |
https://doi.org/10.1590/2179-8087-FLORAM-2019-0044 |
Idioma: |
Inglês |
Conteúdo: |
The vegetation structure is a good indicator of the conservation condition of an ecosystem, since it reflects alterations caused by anthropic action. This study proposes to analyze the phytosociological aspects of the Caatinga domain under anthropic disturbance and their correlations with hydrological variables. Twenty-five 400 m2 plots were sampled in the municipality of Floresta - PE, Brazil. Phytosociological parameters such as density, frequency and dominance were calculated. The seasonality of plant area index was analyzed for six species. The association between structural characteristics and hydrological variables (throughfall, stemflow and interception loss) in the species was evaluated by multivariate analysis. A total of 930 individuals, six families and 10 species were recorded. The abundance of the species Cenostigma pyramidale in the area may be an indicator of the degree of change in the vegetation. The structural characteristics of the species revealed little association with rainfall partitioning. |
Palavras-Chave: |
Fitossociologia; Indice de área vegetal; Semiarido. |
Thesagro: |
Caatinga; Chuva; Ecossistema; Vegetação; Vegetação Nativa. |
Thesaurus Nal: |
Phytosociology. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/214846/1/Composition-of-Caatinga-Species-Under-Anthropic-Disturbance-and-Its-Correlation-With-Rainfall-Partitioning-2021.pdf
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Marc: |
LEADER 01997naa a2200313 a 4500 001 2124037 005 2021-02-18 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1590/2179-8087-FLORAM-2019-0044$2DOI 100 1 $aQUEIROZ, M. G. de 245 $aComposition of Caatinga species under anthropic disturbance and its correlation with rainfall partitioning.$h[electronic resource] 260 $c2021 520 $aThe vegetation structure is a good indicator of the conservation condition of an ecosystem, since it reflects alterations caused by anthropic action. This study proposes to analyze the phytosociological aspects of the Caatinga domain under anthropic disturbance and their correlations with hydrological variables. Twenty-five 400 m2 plots were sampled in the municipality of Floresta - PE, Brazil. Phytosociological parameters such as density, frequency and dominance were calculated. The seasonality of plant area index was analyzed for six species. The association between structural characteristics and hydrological variables (throughfall, stemflow and interception loss) in the species was evaluated by multivariate analysis. A total of 930 individuals, six families and 10 species were recorded. The abundance of the species Cenostigma pyramidale in the area may be an indicator of the degree of change in the vegetation. The structural characteristics of the species revealed little association with rainfall partitioning. 650 $aPhytosociology 650 $aCaatinga 650 $aChuva 650 $aEcossistema 650 $aVegetação 650 $aVegetação Nativa 653 $aFitossociologia 653 $aIndice de área vegetal 653 $aSemiarido 700 1 $aSILVA, T. G. F. da 700 1 $aSOUZA, C. A. A. de 700 1 $aJARDIM, A. M. daa R. F. 700 1 $aARAÚJO JÚNIOR, G. do N. 700 1 $aSOUZA, L. S. B. de 700 1 $aMOURA, M. S. B. de 773 $tFloresta e Ambiente$gv. 28, n. 1, e20190044, 2021.
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Embrapa Semiárido (CPATSA) |
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Registro Completo
Biblioteca(s): |
Embrapa Semiárido. |
Data corrente: |
06/11/2013 |
Data da última atualização: |
18/07/2017 |
Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
Autoria: |
SHOCK, C. C.; PINTO, J. M.; LAUBACHER, T. A.; ROSS, R. D.; MAHONY, A. C.; KREEFT, H.; SHOCK, B. M. |
Afiliação: |
JOSE MARIA PINTO, CPATSA. |
Título: |
Survival of Escherichia coli on onion during field curing and packout. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
In: SHOCK, C. C. (Ed.). Preliminary studies on Escherichia coli and onion. Ontário: Oregon State University, Malheur Experiment Station, 2013. |
Páginas: |
p. 18-27. |
Descrição Física: |
(OSU. Special Report, Ext/CrS, 148). |
Idioma: |
Inglês |
Conteúdo: |
The Food and Drug administration has expressed concern that Onions (Allium cepa) irrigated with water contaminated with high rates of Escherichia coli could harbor E. coli on their surface or interior. On the other hand, since onions contain antimicrobial compounds and field conditions may not be conducive to E. coli survival, the E. coli population on the surface of onions might become negligible through the course of field curing. Further, the relationship between the E. coli in the irrigation water to the E. coli on onion bulbs after field curing, harvest, and packout has not been studied. To determine if E. coli should be of concern in onion production, we sought to measure the die-off of E. coli on onions between the last irrigation and harvest and the presence of E. coli on onions after packout. Well water was tested and had no E. coli; ditch water intentionally run across a pasture prior to use had 218 to > 2400 MPN of E. coli/100ml. Onions were sampled from those furrow irrigated (ditch water) and those drip irrigated (well water) starting at lifting 3 September 2013 for four consecutive weeks. At 0 and 28 days after lifting, both interior and exterior of the onions were tested for E. coli. At 7, 14, and 21 days after lifting, only the exterior of the onions was tested. None of the onions contained E. coli internally at 0 or 28 days after lifting. At lifting E. coli was present on the exterior of both the drip and furrow irrigated onions and seemed to be largely unrelated to the irrigation water. The exterior E. coli contamination decreased rapidly after lifting. After harvest and packout on 14 October 2013, no E. coli was detected on the onion bulb exteriors from either irrigation treatment. E. coli introduced into the onion field through furrow irrigation was not present on or in the packed out onion bulbs. MenosThe Food and Drug administration has expressed concern that Onions (Allium cepa) irrigated with water contaminated with high rates of Escherichia coli could harbor E. coli on their surface or interior. On the other hand, since onions contain antimicrobial compounds and field conditions may not be conducive to E. coli survival, the E. coli population on the surface of onions might become negligible through the course of field curing. Further, the relationship between the E. coli in the irrigation water to the E. coli on onion bulbs after field curing, harvest, and packout has not been studied. To determine if E. coli should be of concern in onion production, we sought to measure the die-off of E. coli on onions between the last irrigation and harvest and the presence of E. coli on onions after packout. Well water was tested and had no E. coli; ditch water intentionally run across a pasture prior to use had 218 to > 2400 MPN of E. coli/100ml. Onions were sampled from those furrow irrigated (ditch water) and those drip irrigated (well water) starting at lifting 3 September 2013 for four consecutive weeks. At 0 and 28 days after lifting, both interior and exterior of the onions were tested for E. coli. At 7, 14, and 21 days after lifting, only the exterior of the onions was tested. None of the onions contained E. coli internally at 0 or 28 days after lifting. At lifting E. coli was present on the exterior of both the drip and furrow irrigated onions and seemed to be largely unre... Mostrar Tudo |
Palavras-Chave: |
Onion. |
Thesagro: |
Allium Cepa; Bactéria; Cebola; Contaminação; Escherichia Coli; Irrigação. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/160938/1/Pinto-2.pdf
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Marc: |
LEADER 02740naa a2200289 a 4500 001 1970551 005 2017-07-18 008 2013 bl uuuu u00u1 u #d 100 1 $aSHOCK, C. C. 245 $aSurvival of Escherichia coli on onion during field curing and packout.$h[electronic resource] 260 $c2013 300 $ap. 18-27.$c(OSU. Special Report, Ext/CrS, 148). 520 $aThe Food and Drug administration has expressed concern that Onions (Allium cepa) irrigated with water contaminated with high rates of Escherichia coli could harbor E. coli on their surface or interior. On the other hand, since onions contain antimicrobial compounds and field conditions may not be conducive to E. coli survival, the E. coli population on the surface of onions might become negligible through the course of field curing. Further, the relationship between the E. coli in the irrigation water to the E. coli on onion bulbs after field curing, harvest, and packout has not been studied. To determine if E. coli should be of concern in onion production, we sought to measure the die-off of E. coli on onions between the last irrigation and harvest and the presence of E. coli on onions after packout. Well water was tested and had no E. coli; ditch water intentionally run across a pasture prior to use had 218 to > 2400 MPN of E. coli/100ml. Onions were sampled from those furrow irrigated (ditch water) and those drip irrigated (well water) starting at lifting 3 September 2013 for four consecutive weeks. At 0 and 28 days after lifting, both interior and exterior of the onions were tested for E. coli. At 7, 14, and 21 days after lifting, only the exterior of the onions was tested. None of the onions contained E. coli internally at 0 or 28 days after lifting. At lifting E. coli was present on the exterior of both the drip and furrow irrigated onions and seemed to be largely unrelated to the irrigation water. The exterior E. coli contamination decreased rapidly after lifting. After harvest and packout on 14 October 2013, no E. coli was detected on the onion bulb exteriors from either irrigation treatment. E. coli introduced into the onion field through furrow irrigation was not present on or in the packed out onion bulbs. 650 $aAllium Cepa 650 $aBactéria 650 $aCebola 650 $aContaminação 650 $aEscherichia Coli 650 $aIrrigação 653 $aOnion 700 1 $aPINTO, J. M. 700 1 $aLAUBACHER, T. A. 700 1 $aROSS, R. D. 700 1 $aMAHONY, A. C. 700 1 $aKREEFT, H. 700 1 $aSHOCK, B. M. 773 $tIn: SHOCK, C. C. (Ed.). Preliminary studies on Escherichia coli and onion. Ontário: Oregon State University, Malheur Experiment Station, 2013.
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