Phytoliths from soil surfaces and water reservoirs of the Brazilian semi-arid Caatinga

Barroso, Francisco Rony Gomes; Gomes, Vaneicia dos Santos; Carvalho, Carlos Eduardo Alencar; Ledru, Marie‐Pierre; Favier, Charly; Araújo, Francisca Soares de; Brémond, Laurent

doi:10.1016/j.jsames.2021.103180

Cited by 4 publications

(3 citation statements)

References 32 publications

(51 reference statements)

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“…Em condições de semiaridez, como no nordeste do Brasil, ou aridez, a falta de matéria orgânica no solo pode inviabilizar o uso da análise isotópica de carbono ou nitrogênio. Os fitólitos, por outro lado, se preservam bem nessas condições (RANULPHO 2016, GALVÃO 2019, BARROSO et al 2021, LISTO et al 2022) e ainda separam as gramíneas de ciclo C 3 e C 4 , pois permitem a classificação taxonômica das gramíneas em nível de subfamília (TWISS 1992).…”

Section: Preservaçãounclassified

Fitólitos – Uma ferramenta para estudos de reconstituição paleoambiental

Calegari¹,

Souza²,

Mozer³

et al. 2022

Derb.

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Os fitólitos são estruturas microscópicas de sílica (SiO2.nH2O) produzidos nos tecidos vegetais. O interesse pelo estudo dos fitólitos tem crescido significativamente nos últimos anos no Brasil e no mundo devido a sua grande variedade de usos, desde a arqueologia até a medicina legal e por sua natureza altamente interdisciplinar. A análise fitolítica recentemente tem sido entendida como uma superdisciplina, que perpassa por diferentes escalas de análise. Estudos referentes a produção de fitólitos, variações de forma e tamanho e, a análise/interpretação de assembleias preservadas em solos e sedimentos têm contribuído para a compreensão de questões paleoambientais e paleoarqueobotânicas. Com vistas a relevância e visibilidade que a análise de fitólitos tem apresentado, sobretudo no Brasil, se apresenta aqui uma revisão sobre os principais aspectos relacionados a essa técnica e as aplicações no Brasil.

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Section: Preservaçãounclassified

Fitólitos – Uma ferramenta para estudos de reconstituição paleoambiental

Calegari¹,

Souza²,

Mozer³

et al. 2022

Derb.

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“…Recent advancements have shown the ability to identify palm phytoliths in the mid-elevation Andean forest, 15 monopodial bamboo in China, 28 Amazonian forests, 29 and Brazilian shrub. 30 Understanding of PhytOC in oil palm plantations as region-specific and its potential in long-term C sequestration will be an added advantage. To the best of our knowledge, there are no reports on phytolith estimation in the oil palm plantations of India and hence, we attempt to survey the oil palm plantations in Tamil Nadu for phytolith research.…”

Section: ■ Introductionmentioning

confidence: 99%

“…But it is difficult to estimate the total amount of phytolith because of its massive distribution in plant parts. Recent advancements have shown the ability to identify palm phytoliths in the mid-elevation Andean forest, monopodial bamboo in China, Amazonian forests, and Brazilian shrub . Understanding of PhytOC in oil palm plantations as region-specific and its potential in long-term C sequestration will be an added advantage.…”

Section: Introductionmentioning

confidence: 99%

Phytolith-Occluded Carbon Sequestration Potential of Oil Palm Plantation in Tamil Nadu

et al. 2022

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Oil palm (Elaeis guineensis) has proven to be a phytolith-occluded carbon (PhytOC)-rich species that plays a vital role in acting as a carbon sink for reducing atmospheric carbon dioxide (CO 2 ) concentration. The present research estimated the silicon, phytolith, and PhytOC contents in four (OP4), eight (OP8), and fifteen (OP15)-year-old oil palm plantations. Qualitative analysis using a scanning electron microscope (SEM) revealed the presence of abundant globular echinate phytoliths with varied diameter (8.484−10.18 μm) in fronds, empty fruit bunches, and roots. Furthermore, a wide band (400−490 cm −1 ) underlined a higher relative abundance of Si−OH groups in empty fruit bunches, fronds, and roots, which emphasized the amorphous nature of silica. Quantitative analysis revealed that the phytolith (phytolith/dry biomass), PhytOC (PhytOC/phytolith), and PhytOC (PhytOC/dry biomass) contents in all oil palms differed significantly (p < 0.05) and increased with age. The PhytOC stock showed significant variation, with the trend of OP15 > OP8 > OP4. The belowground biomass of OP4 (16.43 g kg −1 ) and OP8 (17.13 g kg −1 ) had a maximum PhytOC concentration compared to the aboveground biomass, and the belowground proportion varied from 20.62 to 20.65%. The study demonstrated a positive correlation between the phytolith and PhytOC contents of oil palm; thereby, oil palm should be cultivated for enhanced long-term sequestration as a phytolith accumulator.

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