| 1. Identity statement | ||||||||||
| Reference Type | Thesis or Dissertation (Thesis) | |||||||||
| Site | mtc-m21c.sid.inpe.br | |||||||||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||||||||
| Identifier | 8JMKD3MGP3W34R/428U3L5 | |||||||||
| Repository | sid.inpe.br/mtc-m21c/2020/04.01.21.50 | |||||||||
| Last Update | 2020:10.23.16.41.03 (UTC) administrator | |||||||||
| Metadata Repository | sid.inpe.br/mtc-m21c/2020/04.01.21.50.14 | |||||||||
| Metadata Last Update | 2021:06.25.18.49.42 (UTC) administrator | |||||||||
| Secondary Key | INPE-18308-TDI/2984 | |||||||||
| Citation Key | Fonseca:2020:EvGrPr | |||||||||
| Title | Evapotranspiration and gross primary productivity seasonality in a floodplain forest at the Bananal island region  | |||||||||
| Alternate Title | Sazonalidade da evapotranspiração e da produtividade primária bruta em uma floresta alagável na região da ilha do Bananal | |||||||||
| Course | CST-CST-SESPG-INPE-MCTIC-GOV-BR | |||||||||
| Year | 2020 | |||||||||
| Date | 2020-03-27 | |||||||||
| Access Date | 2024, Apr. 19 | |||||||||
| Thesis Type | Tese (Doutorado em Ciência do Sistema Terrestre) | |||||||||
| Secondary Type | TDI | |||||||||
| Number of Pages | 89 | |||||||||
| Number of Files | 1 | |||||||||
| Size | 6129 KiB | |||||||||
| 2. Context | ||||||||||
| Author | Fonseca, Letícia d'Agosto Miguel | |||||||||
| Group | CST-CST-SESPG-INPE-MCTIC-GOV-BR | |||||||||
| Committee | Randow, Celso von (presidente) Borma, Laura de Simone (orientadora) Rennó, Camilo Daleles Rocha, Humberto Ribeiro da Silva, Thiago Sanna Freire | |||||||||
| e-Mail Address | leticiafonseca.geo@gmail.com | |||||||||
| University | Instituto Nacional de Pesquisas Espaciais (INPE) | |||||||||
| City | São José dos Campos | |||||||||
| History (UTC) | 2020-04-01 21:53:11 :: leticia.fonseca@inpe.br -> pubtc@inpe.br :: 2020-04-09 18:54:17 :: pubtc@inpe.br -> leticia.fonseca@inpe.br :: 2020-05-18 00:13:10 :: leticia.fonseca@inpe.br -> pubtc@inpe.br :: 2020-05-18 11:43:00 :: pubtc@inpe.br -> administrator :: 2020-06-19 17:09:35 :: administrator -> simone :: 2020-06-19 17:49:47 :: simone :: -> 2020 2020-10-14 16:30:29 :: simone -> administrator :: 2020 2020-10-23 15:27:56 :: administrator -> simone :: 2020 2020-10-23 17:10:58 :: simone -> administrator :: 2020 2021-06-25 18:49:42 :: administrator -> :: 2020 | |||||||||
| 3. Content and structure | ||||||||||
| Is the master or a copy? | is the master | |||||||||
| Content Stage | completed | |||||||||
| Transferable | 1 | |||||||||
| Keywords | floodplain Amazon Bananal gross primary productivity evapotranspiration planície de inundação Amazônia Bananal produtividade primária bruta evapotranspiração | |||||||||
| Abstract | The Amazon forest plays an important role in regulating the local, regional and global climate, due to the high potential for absorbing carbon in its biomass and transferring large amounts of water from the land surface to the atmosphere through evapotranspiration. Despite the several studies that have explored the mechanisms of seasonal vegetation control, a small number of them have focused on flooded forests. In the Amazon basin, it corresponds to c.a. 14% of the basin. This study was performed in a floodplain forest located at the transition area between the Amazon and Cerrado (Savana) biomes, near the Bananal (BAN) Island region seeking to understand the mechanisms of vegetation control during the dry and flooded periods. The seasonality of gross primary productivity (GPP) and evapotranspiration (ET) from eddy covariance measurements were assessed, along with environmental drivers and phenological patterns, obtained from the field (leaf litter mass) and satellite measurements (enhanced vegetation index (EVI) from the Moderate Resolution Imaging Spectroradiometer/multi-angle implementation correction (MODIS/MAIAC)). ET measurements presented many gaps, and a statistical model (the Generalized Additive Model - GAM) was used to reconstruct the records from 2004 to 2017, using the ERA5 reanalysis climate data. Moreover, the remote sensing product (MOD16A2) was acquired to analyze the reliability of this product in describing seasonal ET. The long-term change on the hydrological pattern at the BAN region was analyzed through the Gravity Recovery and Climate Experiment (GRACE) satellite product. The results revealed that Gross primary production is limited by soil moisture during the flooded period due to the excess water, while GPP is positively associated with soil moisture during non-flooded months. Besides, GPP is maximized when the accumulated water deficit (CWD) increases, indicating that it depends on the amount of water input in the environment. EVI was positively associated with leaf litter mass and GPP, suggesting the synchrony between leaf production and the photosynthetic capacity of the canopy, decreasing at the peak of the flooded period and at the end of the dry season. The EVI was also able to describe the interannual variations of the canopy in relation to environmental factors, such as during the extreme drought of the El Niño year (2015/2016). The main ET drivers were identified during the model calibration process, which are: vapour pressure deficit, radiation and soil moisture. The seasonal ecosystem productivity and evapotranspiration are not synchronized in this Southern Amazon forest during the flooded period, because the free water evaporation mainly drives ET. However, during non-flooded months ET is governed by forest transpiration, as indicated by the association with the carbon, phenological and meteorological seasonal patterns. The flood pulse regulates the soil volume water content, and consequently, the water availability for plants during non-flooded months. These findings highlighted the vulnerability of this forest facing extreme dry years, given the decreased flood pulse trend reported here, which consequently diminished the total water storage in this region during 2016, assessed through GRACE product. The Amazon forest plays an important role in regulating the local, regional and global climate, due to the high potential for absorbing carbon in its biomass and transferring large amounts of water from the land surface to the atmosphere through evapotranspiration. Despite the several studies that have explored the mechanisms of seasonal vegetation control, a small number of them have focused on flooded forests. In the Amazon basin, it corresponds to c.a. 14% of the basin. This study was performed in a floodplain forest located at the transition area between the Amazon and Cerrado (Savana) biomes, near the Bananal (BAN) Island region seeking to understand the mechanisms of vegetation control during the dry and flooded periods. The seasonality of gross primary productivity (GPP) and evapotranspiration (ET) from eddy covariance measurements were assessed, along with environmental drivers and phenological patterns, obtained from the field (leaf litter mass) and satellite measurements (enhanced vegetation index (EVI) from the Moderate Resolution Imaging Spectroradiometer/multi-angle implementation correction (MODIS/MAIAC)). ET measurements presented many gaps, and a statistical model (the Generalized Additive Model - GAM) was used to reconstruct the records from 2004 to 2017, using the ERA5 reanalysis climate data. Moreover, the remote sensing product (MOD16A2) was acquired to analyze the reliability of this product in describing seasonal ET. The long-term change on the hydrological pattern at the BAN region was analyzed through the Gravity Recovery and Climate Experiment (GRACE) satellite product. The results revealed that Gross primary production is limited by soil moisture during the flooded period due to the excess water, while GPP is positively associated with soil moisture during non-flooded months. Besides, GPP is maximized when the accumulated water deficit (CWD) increases, indicating that it depends on the amount of water input in the environment. EVI was positively associated with leaf litter mass and GPP, suggesting the synchrony between leaf production and the photosynthetic capacity of the canopy, decreasing at the peak of the flooded period and at the end of the dry season. The EVI was also able to describe the interannual variations of the canopy in relation to environmental factors, such as during the extreme drought of the El Niño year (2015/2016). The main ET drivers were identified during the model calibration process, which are: vapour pressure deficit, radiation and soil moisture. The seasonal ecosystem productivity and evapotranspiration are not synchronized in this Southern Amazon forest during the flooded period, because the free water evaporation mainly drives ET. However, during non-flooded months ET is governed by forest transpiration, as indicated by the association with the carbon, phenological and meteorological seasonal patterns. The flood pulse regulates the soil volume water content, and consequently, the water availability for plants during non-flooded months. These findings highlighted the vulnerability of this forest facing extreme dry years, given the decreased flood pulse trend reported here, which consequently diminished the total water storage in this region during 2016, assessed through GRACE product. RESUMO: A Floresta Amazônica desempenha um importante papel na regulação do clima em escala local, regional e global, devido ao elevado potencial de absorção de carbono em sua biomassa e da transferência de água para a atmosfera através da evapotranspiração. Apesar dos inúmeros estudos que exploraram os mecanismos de controle sazonal da vegetação, poucos se concentraram nas florestas inundadas, as quais correspondem a aproximadamente 14% da bacia Amazônica. Em busca de compreender os mecanismos de controle da vegetação durante os períodos secos e inundados, o presente trabalho foi realizado em uma floresta sazonalmente alagada localizada na área de transição entre os biomas Amazônia e Cerrado, próximo à região da Ilha do Bananal (BAN). Foi realizada a análise da sazonalidade da produtividade primária bruta (PPB) e da evapotranspiração (ET) obtidas através da torre micrometeorológica, juntamente com variáveis climáticas e padrões fenológicos, estes, obtidos em campo (massa foliar) e através do índice de vegetação melhorado (EVI). O EVI foi calculado a partir de imagens com resolução moderada e correção angular e atmosférica (MODIS / MAIAC)). As medidas de ET apresentaram muitas lacunas e um modelo estatístico (do inglês, Generalized Aditive Model - GAM) foi usado para reconstruir a série temporal desse dado de 2004 a 2017, dados climáticos de reanálise (ERA5) foram utilizados como variáveis preditoras nesse modelo. Além disso, o produto de sensoriamento remoto MOD16A2 foi adquirido para analisar a potencialidade do mesmo em representar a sazonalidade da ET. As mudanças no padrão hidrológico da região foram analisadas por meio do produto do satélite GRACE (do inglês, Gravity Recovery and Climate Experiment). Os resultados revelaram que a produtividade do ecossistema é limitada pela umidade do solo de duas maneiras, durante o período alagado, o excesso de água limita a PPB, enquanto a PPB está associada positivamente à umidade do solo durante os meses não alagados. Além disso, a PPB é maximizada quando o déficit acumulado de água (CWD) aumenta, indicando a dependência da quantidade de água que entra no sistema. O EVI associou-se positivamente à massa foliar e à PPB, sugerindo a sincronia entre a produção foliar e a capacidade fotossintética do dossel, diminuindo no pico do período de inundação e no final da estação seca. O EVI também foi capaz de descrever as variações interanuais do dossel em relação aos fatores ambientais, como durante a seca extrema do ano de El Niño (2015/2016). Os principais fatores climáticos que influenciam na sazonalidade da ET são: O déficit de pressão de vapor, a radiação e a umidade do solo, identificados durante o processo de calibração do modelo estatístico. A produtividade sazonal do ecossistema e a evapotranspiração são dissociadas nesta floresta, pois as altas taxas de ET estão relacionadas principalmente com a evaporação de água livre durante o alagamento, enquanto durante os meses não inundados, a transpiração da floresta é o principal regulador da ET, como indicado pela sazonalidade do carbono, da fenologia e dos dados climáticos. O pulso de inundação regula o volume de água no solo e, consequentemente, a disponibilidade de água para as plantas durante os meses não inundados. Esses resultados evidenciam a vulnerabilidade dessa floresta em anos extremos de seca, dada à tendência de diminuição da amplitude do alagamento identificada nesse estudo, que consequentemente diminuiu o armazenamento total de água na região durante o ano de 2016, observado através do produto do satélite GRACE. | |||||||||
| Area | CST | |||||||||
| Arrangement | urlib.net > BDMCI > Fonds > Produção pgr ATUAIS > CST > Evapotranspiration and gross... | |||||||||
| doc Directory Content | access | |||||||||
| source Directory Content |
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| agreement Directory Content |
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| 4. Conditions of access and use | ||||||||||
| data URL | http://urlib.net/ibi/8JMKD3MGP3W34R/428U3L5 | |||||||||
| zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34R/428U3L5 | |||||||||
| Language | en | |||||||||
| Target File | publicacao.pdf | |||||||||
| User Group | leticia.fonseca@inpe.br pubtc@inpe.br | |||||||||
| Visibility | shown | |||||||||
| Copyright License | urlib.net/www/2012/11.12.15.10 | |||||||||
| Rightsholder | originalauthor yes | |||||||||
| Read Permission | allow from all | |||||||||
| Update Permission | not transferred | |||||||||
| 5. Allied materials | ||||||||||
| Mirror Repository | urlib.net/www/2017/11.22.19.04.03 | |||||||||
| Next Higher Units | 8JMKD3MGPCW/449U4PL | |||||||||
| Citing Item List | sid.inpe.br/bibdigital/2021/03.06.05.18 1 | |||||||||
| Host Collection | urlib.net/www/2017/11.22.19.04 | |||||||||
| 6. Notes | ||||||||||
| Empty Fields | academicdepartment affiliation archivingpolicy archivist callnumber contenttype copyholder creatorhistory descriptionlevel dissemination doi electronicmailaddress format isbn issn label lineage mark nextedition notes number orcid parameterlist parentrepositories previousedition previouslowerunit progress readergroup resumeid schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url versiontype | |||||||||