Results LMF


The Leaf Mass Fraction (LMF) is the fraction of total plant dry mass that is invested in leaves. The units used in this analysis are g/g.

Considerations about calculations of biomass allocation parameters are given in Poorter & Sack (2012). Latest dose-response curves are given in Poorter et al. (2012).
Response curves
LMF-1st part
LMF-2nd part
LMF-3rd part
LMF-4th part


Response curve parameters
Environmental Factor a b c df r2
1. Irradiance 1.07402 -0.87867 0.09911 1000 0.24***
2. R:FR -0.09451 0.10054 - 130 0.22
3. UV-B - - - 60 0.00ns
4. CO2 1.31508 -1.07211 0.03305 700 0.02*
5. O3 -0.02673 0.00056 - 190 0.04
6. Nutrients -0.36363 0.36179 1.54676 920 0.29
7. Water availability - - - 320 -
8. Waterlogging 0.00 0.1498 - 110 0.10
9. Submergence - - - 60 0.00ns
10. Temperature -0.17076 0.00795 - 300 0.10
11. Salinity - - - 180 0.00ns
12. Soil Compaction - - - 90 0.00ns
If a and b are given, the response curve is of the form y = a + bx, where y is the log(2)-transformed scaled trait, and x is the environmental parameter, with the units as given here. When c is given as well, the curve is of the form y = a + bx^c. The df is the degrees of freedom on which the curve is based, and r2 is the proportion of variance that is explained by the equation.



Plasticity indices
Environmental Factor Plasticity index
1. Irradiance 1.33
2. R:FR 1.07
3. UV-B 1.00
4. CO2 1.06
5. O3 1.04
6. Nutrients 1.28
7. Water availability 1.00
8. Waterlogging 1.11
9. Submergence 1.00
10. Temperature 1.18
11. Salinity 1.00
12. Soil Compaction 1.00
The plasticity index is the ratio between the highest and the lowest value of the response curve over the full trajectory given here. Values in bold indicate a plasticity index > 1.5. Values in red indicate an LMF that decreases when the environmental parameter of interest increases. Values in blue indicates an increase in the trait value with an increase in the level of the environmental fctor
Last updated: 05-05-2014