Uncertainty in sap flow of Brazilian mahogany determined by the heat ratio method

Amaral, Alisson Macendo; Soares, Frederico Antônio Loureiro; Vellame, Lucas Melo; Teixeira, Marconi Batista

doi:10.1007/s11676-020-01211-w

Cited by 1 publication

(2 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…in addition, a plant was used to determine the properties of the sapwood, as this is a destructive analysis. More details on weighing lysimeters, probes construction, method calibrations and uncertainties involved in sap flow measurement in Swietenia macrophylla King were published in a previous study by [26].…”

Section: Methodsmentioning

confidence: 99%

“…The evapotranspiration was calculated by the Penman-Monteith method, following instructions contained in FAO Bulletin 56 for protected environment conditions and missing data [26]. The temporal variables measured were air temperature (°C) and relative humidity (%) by a thermohygrometer model HC2S3 from Campbell Scientific® and radiation (MJ m -2 ) by a pyranometer model LP 02 from the manufacturer Hukseflux®.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Sap flow and transpiration of young Brazilian mahogany plants submitted to soil water potential variation

Amaral

Vellame

Silva³

et al. 2023

Sci. Plena

View full text Add to dashboard Cite

Brazilian mahogany (Swietenia macrophylla King) is a forest species of economic and environmental interest due to its wood’s great finish and its use in recovering and recomposing ecosystems. However, clarification on how this species uses water resources is still necessary. This study proposes to evaluate sap flow and transpiration behavior in young Brazilian mahogany plants under variable conditions of soil water potential. We conducted the study in a protected environment and cultivated the plants in weighing lysimeters wherein the soil underwent potential variations between -10 kPa and -35 kPa during periods of water restriction, rehydration, and full irrigation. To quantify water use in the mahogany plants, we measured sap flow through heat pulses, transpiration through the weighing lysimeters, and evapotranspiration by weather variables. Sap flow and transpiration are affected negatively by soil water potential variation. The leaves lost water to the atmosphere under water deficit conditions, even with the absence of upward sap flow. Sap flow was restored four days after irrigation had resumed.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%