Table 2.

Chemical parameters measured in plants

	Total phenolic content [mg (g dry mass)-1]		Anthocyanin [mg (g dry mass)-1]		Chlorophyll a and b [mg (g dry mass)-1]
	LC	SB	LC	SB	LC	SB
C. aspera M. spicatum	0.9 ± 0.08	0.7 ± 0.12	0.05 ± 0	0.06 ± 0	1.9 ± 0.17	1.2 ± 0.02
Apex	173 ± 21	120 ± 33	0.9 ± 0.02	0.52 ± 0.08	6.8 ± 1.3	2.3 ± 0.26
Upper leaves	120 ± 29	97 ± 5	0.8 ± 0.2	0.50 ± 0.01	8.4 ± 2.3	2.3 ± 0.28
Upper stem	133 ± 13	100 ± 9	1.4 ± 0.1	0.81 ± 0.15	1.8 ± 0.6	1.0 ± 0.04
	C [mg (g dry mass)-1]		N [mg (g dry mass)-1]		P [mg (g dry mass)-1]
	LC	SB	LC	SB	LC	SB
C. aspera M. spicatum	206 ± 4	179 ± 15	11 ± 1.1	14 ± 0.12	0.4 ± 0.1	0.68 ± 0.06
Apex	425 ± 20	357 ± 35	36 ± 9	24 ± 8	2.6 ± 1.2	2.4 ± 1.5
Upper leaves	384 ± 37	363 ± 5	27 ± 6	16 ± 3	1.2	1.3 ± 0.33
Upper stem	400 ± 7	379 ± 25	15 ± 3	14 ± 3	0.9 ± 0.2	--

LC: Lake Constance, SB: Schaproder Bodden, n = 3, mean ± SD