This package follows the Prometheus wiki spreadsheet from Sack and Pasquet-Kok at:
https://prometheusprotocols.net/function/water-relations/pressure-volume-curves/leaf-pressure-volume-curve-parameters/
For references, see Koide et al. 2000, Sack et al. 2003, and Tyree & Hammel 1972.
library(dplyr) library(photosynthesis) # Read in data dat = system.file("extdata", "PV_curve.csv", package = "photosynthesis") |> read.csv() # Fit one PV curve fit = fit_PV_curve(filter(dat, ID == "L2")) # See fitted parameters fit[[1]] # Plot water mass graph # fit[[2]] # Plot PV Curve # fit[[3]] #Fit all PV curves in a file fits = fit_many( dat, group = "ID", funct = fit_PV_curve, progress = FALSE ) # See parameters fits[[1]][[1]] # See water mass - water potential graph # fits[[1]][[2]] # See PV curve # fits[[1]][[3]] # Compile parameter outputs pars = compile_data(data = fits, output_type = "dataframe", list_element = 1) # Compile the water mass - water potential graphs graphs1 = compile_data(data = fits, output_type = "list", list_element = 2) # Compile the PV graphs graphs2 = compile_data(data = fits, output_type = "list", list_element = 3)
Koide RT, Robichaux RH, Morse SR, Smith CM. 2000. Plant water status, hydraulic resistance and capacitance. In: Plant Physiological Ecology: Field Methods and Instrumentation (eds RW Pearcy, JR Ehleringer, HA Mooney, PW Rundel), pp. 161-183. Kluwer, Dordrecht, the Netherlands.
Sack L, Cowan PD, Jaikumar N, Holbrook NM. 2003. The 'hydrology' of leaves: co-ordination of structure and function in temperate woody species. Plant, Cell & Environment 26:1343-1356
Tyree MT, Hammel HT. 1972. Measurement of turgor pressure and water relations of plants by pressure bomb technique. Journal of Experimental Botany 23:267-282.
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