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 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Amazônia Oriental. |
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Data corrente: |
13/10/2017 |
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Data da última atualização: |
22/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MOURA, Y. M. de; GALVÃO, L. S.; HILKER, T.; WU, J.; SALESKA, S.; AMARAL, C. H. do; NELSON, B. W.; LOPES, A. P.; WIEDEMAN, K. K.; PROHASKA, N.; OLIVEIRA JUNIOR, R. C. de; MACHADO, C. B.; ARAGÃO, L. E. O. C. |
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Afiliação: |
Yhasmin Mendes de Moura, INPE; Lênio Soares Galvão, INPE; Thomas Hilker, University of Southampton; Jin Wu, University of Arizona / Brookhaven National Laboratory; Scott Saleska, University of Arizona; Cibele Hummel do Amaral, UFV; Bruce Walker Nelson, INPA; Aline Pontes Lopes, INPE; Kenia K. Wiedeman, University of Arizona / Harvard University; Neill Prohaska, University of Arizona; RAIMUNDO COSME DE OLIVEIRA JUNIOR, CPATU; Carolyne Bueno Machado, INPE; Luiz E. O. C. Aragão, INPE / University of Exeter. |
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Título: |
Spectral analysis of amazon canopy phenology during the dry season using a tower hyperspectral camera and modis observations. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
ISPRS Journal of Photogrammetry and Remote Sensing, v. 131, p. 52-64, Sept. 2017. |
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DOI: |
https://doi.org/10.1016/j.isprsjprs.2017.07.006 |
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Idioma: |
Inglês |
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Conteúdo: |
The association between spectral reflectance and canopy processes remains challenging for quantifying large-scale canopy phenological cycles in tropical forests. In this study, we used a tower-mounted hyperspectral camera in an eastern Amazon forest to assess how canopy spectral signals of three species are linked with phenological processes in the 2012 dry season. We explored different approaches to disentangle the spectral components of canopy phenology processes and analyze their variations over time using 17 images acquired by the camera. The methods included linear spectral mixture analysis (SMA); principal component analysis (PCA); continuum removal (CR); and first-order derivative analysis. In addition, three vegetation indices potentially sensitive to leaf flushing, leaf loss and leaf area index (LAI) were calculated: the Enhanced Vegetation Index (EVI), Normalized Difference Vegetation Index (NDVI) and the entitled Green-Red Normalized Difference (GRND) index.Weinspected also the consistency of the camera observations using Moderate Resolution Imaging Spectroradiometer (MODIS) and available phenological data on new leaf production and LAI of young, mature and old leaves simulated by a leaf demography-ontogeny model. The results showed a diversity of phenological responses during the 2012 dry season with related changes in canopy structure and greenness values. Because of the differences in timing and intensity of leaf flushing and leaf shedding, Erisma uncinatum, Manilkara huberi and Chamaecrista xinguensis presented different green vegetation (GV) and non-photosynthetic vegetation (NPV) SMA fractions; distinct PCA scores; changes in depth, width and area of the 681-nm chlorophyll absorption band; and variations over time in the EVI, GRND and NDVI. At the end of dry season, GV increased for Erisma uncinatum, while NPV increased for Chamaecrista xinguensis. For Manilkara huberi, the NPV first increased in the beginning of August and then decreased toward September with new foliage. Variations in red-edge position were not statistically significant between the species and across dates at the 95% confidence level. The camera data were affected by view-illumination effects, which reduced theSMAshade fraction over time.WhenMODIS data were corrected for these effects using the Multi-Angle Implementation of Atmospheric Correction Algorithm (MAIAC), we observed an EVI increase toward September that closely tracked the modeled LAI of mature leaves (3?5 months). Compared to the EVI, the GRND was a better indicator of leaf flushing because the modeled production of new leaves peaked in August and then declined in September following the GRND closely. While the EVI was more related to changes in mature leaf area, the GRND was more associated with new leaf flushing. MenosThe association between spectral reflectance and canopy processes remains challenging for quantifying large-scale canopy phenological cycles in tropical forests. In this study, we used a tower-mounted hyperspectral camera in an eastern Amazon forest to assess how canopy spectral signals of three species are linked with phenological processes in the 2012 dry season. We explored different approaches to disentangle the spectral components of canopy phenology processes and analyze their variations over time using 17 images acquired by the camera. The methods included linear spectral mixture analysis (SMA); principal component analysis (PCA); continuum removal (CR); and first-order derivative analysis. In addition, three vegetation indices potentially sensitive to leaf flushing, leaf loss and leaf area index (LAI) were calculated: the Enhanced Vegetation Index (EVI), Normalized Difference Vegetation Index (NDVI) and the entitled Green-Red Normalized Difference (GRND) index.Weinspected also the consistency of the camera observations using Moderate Resolution Imaging Spectroradiometer (MODIS) and available phenological data on new leaf production and LAI of young, mature and old leaves simulated by a leaf demography-ontogeny model. The results showed a diversity of phenological responses during the 2012 dry season with related changes in canopy structure and greenness values. Because of the differences in timing and intensity of leaf flushing and leaf shedding, Erisma uncinatum, Ma... Mostrar Tudo |
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Palavras-Chave: |
Espécie florestal; Sazonalidade. |
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Thesagro: |
Fenologia; Folha; Seca. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 03841naa a2200337 a 4500
001 2077368
005 2021-12-22
008 2017 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.isprsjprs.2017.07.006$2DOI
100 1 $aMOURA, Y. M. de
245 $aSpectral analysis of amazon canopy phenology during the dry season using a tower hyperspectral camera and modis observations.$h[electronic resource]
260 $c2017
520 $aThe association between spectral reflectance and canopy processes remains challenging for quantifying large-scale canopy phenological cycles in tropical forests. In this study, we used a tower-mounted hyperspectral camera in an eastern Amazon forest to assess how canopy spectral signals of three species are linked with phenological processes in the 2012 dry season. We explored different approaches to disentangle the spectral components of canopy phenology processes and analyze their variations over time using 17 images acquired by the camera. The methods included linear spectral mixture analysis (SMA); principal component analysis (PCA); continuum removal (CR); and first-order derivative analysis. In addition, three vegetation indices potentially sensitive to leaf flushing, leaf loss and leaf area index (LAI) were calculated: the Enhanced Vegetation Index (EVI), Normalized Difference Vegetation Index (NDVI) and the entitled Green-Red Normalized Difference (GRND) index.Weinspected also the consistency of the camera observations using Moderate Resolution Imaging Spectroradiometer (MODIS) and available phenological data on new leaf production and LAI of young, mature and old leaves simulated by a leaf demography-ontogeny model. The results showed a diversity of phenological responses during the 2012 dry season with related changes in canopy structure and greenness values. Because of the differences in timing and intensity of leaf flushing and leaf shedding, Erisma uncinatum, Manilkara huberi and Chamaecrista xinguensis presented different green vegetation (GV) and non-photosynthetic vegetation (NPV) SMA fractions; distinct PCA scores; changes in depth, width and area of the 681-nm chlorophyll absorption band; and variations over time in the EVI, GRND and NDVI. At the end of dry season, GV increased for Erisma uncinatum, while NPV increased for Chamaecrista xinguensis. For Manilkara huberi, the NPV first increased in the beginning of August and then decreased toward September with new foliage. Variations in red-edge position were not statistically significant between the species and across dates at the 95% confidence level. The camera data were affected by view-illumination effects, which reduced theSMAshade fraction over time.WhenMODIS data were corrected for these effects using the Multi-Angle Implementation of Atmospheric Correction Algorithm (MAIAC), we observed an EVI increase toward September that closely tracked the modeled LAI of mature leaves (3?5 months). Compared to the EVI, the GRND was a better indicator of leaf flushing because the modeled production of new leaves peaked in August and then declined in September following the GRND closely. While the EVI was more related to changes in mature leaf area, the GRND was more associated with new leaf flushing.
650 $aFenologia
650 $aFolha
650 $aSeca
653 $aEspécie florestal
653 $aSazonalidade
700 1 $aGALVÃO, L. S.
700 1 $aHILKER, T.
700 1 $aWU, J.
700 1 $aSALESKA, S.
700 1 $aAMARAL, C. H. do
700 1 $aNELSON, B. W.
700 1 $aLOPES, A. P.
700 1 $aWIEDEMAN, K. K.
700 1 $aPROHASKA, N.
700 1 $aOLIVEIRA JUNIOR, R. C. de
700 1 $aMACHADO, C. B.
700 1 $aARAGÃO, L. E. O. C.
773 $tISPRS Journal of Photogrammetry and Remote Sensing$gv. 131, p. 52-64, Sept. 2017.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
14/12/2021 |
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Data da última atualização: |
18/01/2022 |
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Tipo da produção científica: |
Nota Técnica/Nota Científica |
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Autoria: |
SILVA, G. V.; PINTO, N. S.; SANTOS, R. S.; DAUD, R. D. |
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Afiliação: |
GABRIELLE VITÓRIA SILVA, Universidade Federal de Goiás; NELSON SILVA PINTO, Universidade Federal de Goiás; RODRIGO SOUZA SANTOS, CPAF-AC; RODRIGO DAMASCO DAUD, Universidade Federal de Goiás. |
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Título: |
Como a temperatura afeta a dinâmica populacional de Tenuipalpus heveae (Acari, Tenuipalpidae) em clones de seringueira? |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Entomology Beginners, v. 2, e023, 2021. |
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ISSN: |
2675-9276 |
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DOI: |
https://doi.org/10.12741/2675-9276.v2.e023 |
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Idioma: |
Português |
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Conteúdo: |
No presente estudo foi avaliado o efeito temperatura sobre a dinâmica populacional de Tenuipalpus heveae Baker em cinco clones de seringueira. O estudo foi conduzido de novembro de 2018 a janeiro de 2019 no jardim clonal de seringueiras do campo experimental da Embrapa Acr,e Rio Branco, estado do Acre, nos clones CPAA C18, FDR 5788, FX 3899, PB 312 e RRIM 600. Semanalmente foram retiradas, aleatoriamente, oito folhas do terço inferior da copa de quatro plantas de cada clone. Os ácaros coletados foram montados em lâminas de microscopia em meio de Hoyer. A relação entre a temperatura média e a abundância de T. heveae foi testada por meio de um modelo linear generalizado com distribuição de Poisson. Foi amostrado um total de 2.909 ácaros em 6.720 folíolos analisados. Observou-se um efeito negativo da temperatura sobre a abundância de T. heveae. In the present study, the effect of temperature on the population dynamics of Tenuipalpus heveae Baker in five rubber tree clones was evaluated. The study was conducted from November 2018 to January 2019 in the rubber tree clonal garden of the experimental field of Embrapa Acre, municipality of Rio Branco, state of Acre, Brazil in the clones CPAA C18, FDR 5788, FX 3899, PB 312 and RRIM 600. Eight leaves were randomly removed weekly from the lower third of the canopy of four plants of each clone. The collected mites were mounted on microscope slides in Hoyer?s medium. Thus, the relationship between mean temperature and T. heveae abundance was tested using a generalized linear model with Poisson?s distribution. A total of 2,909 mites were sampled from 6,720 leaflets analyzed. A negative effect of temperature on T. heveae abundance was observed. MenosNo presente estudo foi avaliado o efeito temperatura sobre a dinâmica populacional de Tenuipalpus heveae Baker em cinco clones de seringueira. O estudo foi conduzido de novembro de 2018 a janeiro de 2019 no jardim clonal de seringueiras do campo experimental da Embrapa Acr,e Rio Branco, estado do Acre, nos clones CPAA C18, FDR 5788, FX 3899, PB 312 e RRIM 600. Semanalmente foram retiradas, aleatoriamente, oito folhas do terço inferior da copa de quatro plantas de cada clone. Os ácaros coletados foram montados em lâminas de microscopia em meio de Hoyer. A relação entre a temperatura média e a abundância de T. heveae foi testada por meio de um modelo linear generalizado com distribuição de Poisson. Foi amostrado um total de 2.909 ácaros em 6.720 folíolos analisados. Observou-se um efeito negativo da temperatura sobre a abundância de T. heveae. In the present study, the effect of temperature on the population dynamics of Tenuipalpus heveae Baker in five rubber tree clones was evaluated. The study was conducted from November 2018 to January 2019 in the rubber tree clonal garden of the experimental field of Embrapa Acre, municipality of Rio Branco, state of Acre, Brazil in the clones CPAA C18, FDR 5788, FX 3899, PB 312 and RRIM 600. Eight leaves were randomly removed weekly from the lower third of the canopy of four plants of each clone. The collected mites were mounted on microscope slides in Hoyer?s medium. Thus, the relationship between mean temperature and T. heveae abundance... Mostrar Tudo |
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Palavras-Chave: |
Acre; Amazonia Occidental; Amazônia Ocidental; Dinámica poblacional; Embrapa Acre; Granjas de demostración; Plagas de plantas; Rio Branco (AC); Ruber tree; Temperature resistance; Tenuipalpus heveae; Western Amazon. |
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Thesagro: |
Ácaro; Campo Experimental; Caucho; Dinâmica Populacional; Hevea Brasiliensis; Praga de Planta; Resistência a Temperatura; Seringueira. |
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Thesaurus NAL: |
Acari; Demonstration farms; Mites; Plant pests; Population dynamics; Tenuipalpidae. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/229130/1/27241.pdf
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Marc: |
LEADER 03134naa a2200493 a 4500
001 2137786
005 2022-01-18
008 2021 bl uuuu u00u1 u #d
022 $a2675-9276
024 7 $ahttps://doi.org/10.12741/2675-9276.v2.e023$2DOI
100 1 $aSILVA, G. V.
245 $aComo a temperatura afeta a dinâmica populacional de Tenuipalpus heveae (Acari, Tenuipalpidae) em clones de seringueira?$h[electronic resource]
260 $c2021
520 $aNo presente estudo foi avaliado o efeito temperatura sobre a dinâmica populacional de Tenuipalpus heveae Baker em cinco clones de seringueira. O estudo foi conduzido de novembro de 2018 a janeiro de 2019 no jardim clonal de seringueiras do campo experimental da Embrapa Acr,e Rio Branco, estado do Acre, nos clones CPAA C18, FDR 5788, FX 3899, PB 312 e RRIM 600. Semanalmente foram retiradas, aleatoriamente, oito folhas do terço inferior da copa de quatro plantas de cada clone. Os ácaros coletados foram montados em lâminas de microscopia em meio de Hoyer. A relação entre a temperatura média e a abundância de T. heveae foi testada por meio de um modelo linear generalizado com distribuição de Poisson. Foi amostrado um total de 2.909 ácaros em 6.720 folíolos analisados. Observou-se um efeito negativo da temperatura sobre a abundância de T. heveae. In the present study, the effect of temperature on the population dynamics of Tenuipalpus heveae Baker in five rubber tree clones was evaluated. The study was conducted from November 2018 to January 2019 in the rubber tree clonal garden of the experimental field of Embrapa Acre, municipality of Rio Branco, state of Acre, Brazil in the clones CPAA C18, FDR 5788, FX 3899, PB 312 and RRIM 600. Eight leaves were randomly removed weekly from the lower third of the canopy of four plants of each clone. The collected mites were mounted on microscope slides in Hoyer?s medium. Thus, the relationship between mean temperature and T. heveae abundance was tested using a generalized linear model with Poisson?s distribution. A total of 2,909 mites were sampled from 6,720 leaflets analyzed. A negative effect of temperature on T. heveae abundance was observed.
650 $aAcari
650 $aDemonstration farms
650 $aMites
650 $aPlant pests
650 $aPopulation dynamics
650 $aTenuipalpidae
650 $aÁcaro
650 $aCampo Experimental
650 $aCaucho
650 $aDinâmica Populacional
650 $aHevea Brasiliensis
650 $aPraga de Planta
650 $aResistência a Temperatura
650 $aSeringueira
653 $aAcre
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aDinámica poblacional
653 $aEmbrapa Acre
653 $aGranjas de demostración
653 $aPlagas de plantas
653 $aRio Branco (AC)
653 $aRuber tree
653 $aTemperature resistance
653 $aTenuipalpus heveae
653 $aWestern Amazon
700 1 $aPINTO, N. S.
700 1 $aSANTOS, R. S.
700 1 $aDAUD, R. D.
773 $tEntomology Beginners$gv. 2, e023, 2021.
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