. 2021 Oct 20;12:737454. doi: 10.3389/fmicb.2021.737454

Table 3.

Summary of all parameters under four carbonate chemistry treatments.

	LCHpH	LCLpH	HCHpH	HCLpH
	(Present DIC and pH)	(Reduced pH)	(Ocean carbonation)	(Ocean acidification)
Growth rate (d⁻¹)	1.33 ± 0.01^a	1.16 ± 0.02^b	1.58 ± 0.06^c	1.27 ± 0.02^a
Chl a (pg cell⁻¹)	0.11 ± 0.01^a	0.07 ± 0.01^b	0.14 ± 0.01^c	0.12 ± 0.01^d
Carotenoid (pg cell⁻¹)	0.08 ± 0.02^a	0.06 ± 0.01^b	0.12 ± 0.01^c	0.08 ± 0.01^d
Car: Chl ratio	0.73 ± 0.03^a	0.78 ± 0.01^b	0.83 ± 0.02^c	0.69 ± 0.01^d
rETR_max (arbitrary unit)	252.14 ± 10.84^a	197.71 ± 12.10^b	308.87 ± 15.57^c	241.18 ± 7.21^a
a	0.58 ± 0.03^ab	0.53 ± 0.01^a	0.70 ± 0.03^c	0.60 ± 0.031^b
I_k (μmol photons m⁻² s⁻¹)	433.78 ± 13.68^a	370.10 ± 19.12^b	439.98 ± 30.39^a	402.49 ± 23.21^ab
PIC content (pg C cell⁻¹)	4.17 ± 0.29^a	1.80 ± 0.29^b	5.58 ± 0.27^c	2.65 ± 0.18^d
POC content (pg C cell⁻¹)	10.06 ± 0.29^a	11.87 ± 0.16^b	14.53 ± 0.70^c	11.44 ± 0.46^b
PON content (pg N cell⁻¹)	1.68 ± 0.06^a	2.13 ± 0.15^b	2.25 ± 0.07^b	1.81 ± 0.05^a
PIC/POC ratio	0.42 ± 0.04^a	0.15 ± 0.02^b	0.38 ± 0.03^a	0.23 ± 0.02^c
POC/PON ratio	6.00 ± 0.36^ab	5.59 ± 0.41^a	6.47 ± 0.48^b	6.34 ± 0.26^ab
Protein (pg cell⁻¹)	5.76 ± 0.23^a	6.28 ± 0.52^a	9.24 ± 0.11^b	5.86 ± 0.42^a
Carbohydrate (pg cell⁻¹)	3.34 ± 0.18^a	3.55 ± 0.26^a	5.19 ± 0.18^b	4.61 ± 0.17^c
Protein–C: POC (%)	30.39 ± 1.88^ab	28.02 ± 2.09^a	33.76 ± 1.27^b	27.13 ± 1.54^a
Carbohydrate–C: POC (%)	13.28 ± 0.87^ab	11.96 ± 1.00^a	14.31 ± 0.87^bc	16.14 ± 0.81^c
Chl–C: POC (%)	0.78 ± 0.05^a	0.45 ± 0.01^b	0.72 ± 0.04^a	0.78 ± 0.04^a
Carotenoid–C: POC (%)	0.61 ± 0.02^a	0.38 ± 0.01^b	0.65 ± 0.04^a	0.58 ± 0.03^a
Protein–N: PON (%)	54.93 ± 1.60^a	47.27 ± 4.93^b	65.76 ± 2.58^c	51.92 ± 3.59^ab
Chl–N: PON (%)	0.40 ± 0.01^a	0.22 ± 0.02^b	0.40 ± 0.01^a	0.42 ± 0.02^a

Different letters (a, b, c, d) represent significant differences between four treatments (Tukey post hoc, p<0.05). Values in italic indicate significant lower and those in bold indicate significant larger under the LCLpH (reduced pH), HCHpH (ocean carbonation), and HCLpH (ocean acidification) treatments in comparison with the LCHpH (present DIC and pH) treatment. For more information, please see Table 2.