Table 2.

Local sensitivities of selected model outputs of the newly introduced biophysical and empirical seed and respiration parameters. Each row represents a full simulation where the selected parameter was either increased or decreased by 10 % compared with its calibrated value, while keeping all other parameters at their calibrated values. Every column presents relative change in outputs ( %) obtained from these simulations compared with the model simulation where no parameters were changed. Highest sensitivity parameters per output variable are highlighted. Additionally, the effect of the input variables relative humidity (RH) and soil water on the model outputs was tested in variations of 10 and 25 %. In the case of RH, these variations were applied on the difference between 100 % and current RH (e.g., an increase of 25 % in RH is calculated as $1-(100\mathrm{\%}-\mathrm{R}\mathrm{H}\left(\mathrm{t}\right))\ast (100\mathrm{\%}-25\mathrm{\%})$; similarly, a decrease of 10 % RH is calculated as $1-(100\mathrm{\%}-\mathrm{R}\mathrm{H}\left(\mathrm{t}\right))\ast (100\mathrm{\%}+10\mathrm{\%})$; with $\mathrm{R}\mathrm{H}\left(\mathrm{t}\right)$ the current relative humidity) so that RH does not exceed 100 % at high RH

Parameter	Change	Total photosynthesis	Final plant length	Seed dry weight	Final stem volume
${\varphi }_{\mathbf{z}}^{\mathbf{i}\mathbf{n}\mathbf{t}\mathbf{e}\mathbf{r}\mathbf{n}\mathbf{o}\mathbf{d}\mathbf{e}}$	+	1.10	12.52	1.80	1.45
	-	-0.60	-12.56	-0.68	-0.72
${\varphi }_{\mathbf{x}}^{\mathbf{i}\mathbf{n}\mathbf{t}\mathbf{e}\mathbf{r}\mathbf{n}\mathbf{o}\mathbf{d}\mathbf{e}}$	+	-0.47	-11.04	-0.54	-0.54
	-	1.17	13.33	1.90	1.51
$\epsilon {}_{\mathbf{x}\mathbf{,}\mathbf{z}}^{\mathbf{i}\mathbf{n}\mathbf{t}\mathbf{e}\mathbf{r}\mathbf{n}\mathbf{o}\mathbf{d}\mathbf{e}}$	+	-0.01	-0.04	0.00	0.00
	-	-0.01	0.03	0.00	-0.01
${\varphi }_{\mathbf{z}\mathbf{,}\mathbf{y}}^{\mathbf{l}\mathbf{e}\mathbf{a}\mathbf{f}}$	+	0.32	0.22	0.21	0.28
	-	-0.45	-0.32	-0.29	-0.39
$\epsilon {}_{\mathbf{x}\mathbf{,}\mathbf{y}\mathbf{,}\mathbf{z}}^{\mathbf{l}\mathbf{e}\mathbf{a}\mathbf{f}}$	+	-0.25	-0.18	-0.14	-0.21
	-	0.28	0.20	0.16	0.24
${\varphi }_{\mathbf{z}}^{\mathbf{p}\mathbf{e}\mathbf{t}\mathbf{i}\mathbf{o}\mathbf{l}\mathbf{e}}$	+	0.80	0.67	0.66	0.69
	-	-0.30	-0.27	-0.20	-0.16
${\varphi }_{\mathbf{x}}^{\mathbf{p}\mathbf{e}\mathbf{t}\mathbf{i}\mathbf{o}\mathbf{l}\mathbf{e}}$	+	-0.22	-0.24	-0.16	-0.12
	-	0.95	0.77	0.91	0.91
$\epsilon {}_{\mathbf{x},\mathbf{z}}^{\mathbf{p}\mathbf{e}\mathbf{t}\mathbf{i}\mathbf{o}\mathbf{l}\mathbf{e}}$	+	0.00	0.00	-0.02	-0.01
	-	-0.01	-0.01	0.01	-0.01
${\mathbf{R}}_{\mathbf{f}\mathbf{l}\mathbf{o}\mathbf{w}}^{\mathbf{x}}$	+	-0.17	-0.33	-0.09	-0.12
	-	0.17	0.34	0.09	0.12
${\mathbf{C}}_{\mathbf{s}\mathbf{e}\mathbf{e}\mathbf{d}}^{\mathbf{t}\mathbf{o}\mathbf{t}\mathbf{a}\mathbf{l}}$	+	1.58	1.44	0.73	1.33
	-	-0.57	-0.52	-0.26	-0.48
$\mathbf{G}\mathbf{M}{\mathbf{R}}_{\mathbf{m}\mathbf{a}\mathbf{x}}$	+	-0.96	-1.86	-2.82	-2.83
	-	0.95	1.87	3.01	2.97
Input variable	Change	Total photosynthesis	Final plant length	Seed dry weight	Final stem volume
Relative humidity	+25 %	3.29	2.67	2.50	2.98
	+10 %	1.34	1.09	1.04	1.22
	-10 %	-1.37	-1.09	-1.08	-1.25
	-25 %	-3.74	-2.79	-2.99	-3.41
Soil water potential	+25 %	4.37	5.83	1.53	8.12
	+10 %	1.74	2.31	0.69	3.17
	-10 %	-1.61	-2.19	-0.55	-2.92
	-25 %	-3.90	-5.35	-1.36	-7.02