Citation:

lno.10161

Name: The modulating effect of light intensity on the response of the coccolithophore Gephyrocapsa oceanica to ocean acidification
Published: 2015
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Chromista; Gephyrocapsa oceanica; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Light; North Atlantic; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species

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Abstract:

Global change leads to a multitude of simultaneous modifications in the marine realm among which shoaling of the upper mixed layer, leading to enhanced surface layer light intensities, as well as increased carbon dioxide (CO2) concentration are some of the most critical environmental alterations for phytoplankton. In this study, we investigated the responses of growth, photosynthetic carbon fixation and calcification of the coccolithophore Gephyrocapsa oceanica to elevated inline image (51 Pa, 105 Pa, and 152 Pa) (1 Pa = 10 µatm) at a variety of light intensities (50-800 µmol photons/m**2/s). By fitting the light response curve, our results showed that rising inline image reduced the maximum rates for growth, photosynthetic carbon fixation and calcification. Increasing light intensity enhanced the sensitivity of these rate responses to inline image, and shifted the inline image optima toward lower levels. Combining the results of this and a previous study (Sett et al. 2014) on the same strain indicates that both limiting low inline image and inhibiting high inline image levels (this study) induce similar responses, reducing growth, carbon fixation and calcification rates of G. oceanica. At limiting low light intensities the inline image optima for maximum growth, carbon fixation and calcification are shifted toward higher levels. Interacting effects of simultaneously occurring environmental changes, such as increasing light intensity and ocean acidification, need to be considered when trying to assess metabolic rates of marine phytoplankton under future ocean scenarios.

Keyword(s):

Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Chromista; Gephyrocapsa oceanica; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Light; North Atlantic; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.8. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2016-11-03.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Zhang, Yong		study
2	Species	Species		Zhang, Yong
3	Registration number of species	Reg spec no		Zhang, Yong
4	Uniform resource locator/link to reference	URL ref		Zhang, Yong		WoRMS Aphia ID
5	Carbon dioxide, partial pressure	pCO2	Pa	Zhang, Yong
6	Carbon dioxide, partial pressure, standard deviation	pCO2 std dev	±	Zhang, Yong
7	Light intensity	Io	µmol/m²/s	Zhang, Yong
8	Growth rate	µ	1/day	Zhang, Yong
9	Growth rate, standard deviation	µ std dev	±	Zhang, Yong
10	Maximal electron transport rate, relative	rETR max		Zhang, Yong
11	Maximal electron transport rate, relative, standard deviation	rETR max std dev	±	Zhang, Yong
12	Initial slope of rapid light curve	alpha	µmol electrons/µmol quanta	Zhang, Yong
13	Initial slope of rapid light curve, standard deviation	alpha std dev	±	Zhang, Yong
14	Light saturation point	Ik	µmol/m²/s	Zhang, Yong
15	Light saturation point, standard deviation	Ik std dev	±	Zhang, Yong
16	Particulate organic carbon production per cell	POC prod/cell	pg/#/day	Zhang, Yong
17	Particulate organic carbon, production, standard deviation	POC prod std dev	±	Zhang, Yong
18	Particulate inorganic carbon production per cell	PIC prod/cell	pg/#/day	Zhang, Yong
19	Particulate inorganic carbon, production, standard deviation	PIC prod std dev	±	Zhang, Yong
20	Particulate inorganic carbon/particulate organic carbon ratio	PIC/POC		Zhang, Yong
21	Particulate inorganic carbon/particulate organic carbon ratio, standard deviation	PIC/POC ratio std dev	±	Zhang, Yong
22	Carbon, organic, particulate/Nitrogen, organic, particulate ratio	POC/PON		Zhang, Yong
23	Carbon, organic, particulate/Nitrogen, organic, particulate ratio, standard deviation	POC/PON std dev	±	Zhang, Yong
24	Alkalinity, total	AT	µmol/kg	Zhang, Yong	Potentiometric titration
25	Alkalinity, total, standard deviation	AT std dev	±	Zhang, Yong	Potentiometric titration
26	Carbon, inorganic, dissolved	DIC	µmol/kg	Zhang, Yong
27	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Zhang, Yong
28	pH	pH		Zhang, Yong	Calculated using CO2SYS	total scale
29	pH, standard deviation	pH std dev	±	Zhang, Yong	Calculated using CO2SYS	total scale
30	Bicarbonate ion	[HCO3]-	µmol/kg	Zhang, Yong	Calculated using CO2SYS
31	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Zhang, Yong	Calculated using CO2SYS
32	Carbonate ion	[CO3]2-	µmol/kg	Zhang, Yong	Calculated using CO2SYS
33	Carbonate ion, standard deviation	[CO3]2- std dev	±	Zhang, Yong	Calculated using CO2SYS
34	Carbon dioxide	CO2	µmol/kg	Zhang, Yong	Calculated using CO2SYS
35	Carbon dioxide, standard deviation	CO2 std dev	±	Zhang, Yong	Calculated using CO2SYS
36	Calcite saturation state	Omega Cal		Zhang, Yong	Calculated using CO2SYS
37	Calcite saturation state, standard deviation	Omega Cal std dev	±	Zhang, Yong	Calculated using CO2SYS
38	Temperature, water	Temp	°C	Zhang, Yong
39	Salinity	Sal		Zhang, Yong
40	Phosphate	PHSPHT	µmol/kg	Zhang, Yong
41	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
42	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
43	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
44	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
45	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
46	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
47	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
48	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
49	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

882 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Type (study)	2 Species	3 Reg spec no	4 URL ref (WoRMS Aphia ID)	5 pCO2 [Pa]	6 pCO2 std dev [±]	7 Io [µmol/m²/s]	8 µ [1/day]	9 µ std dev [±]	10 rETR max	11 rETR max std dev [±]	12 alpha [µmol electrons/µmol quanta]	13 alpha std dev [±]	14 Ik [µmol/m²/s]	15 Ik std dev [±]	16 POC prod/cell [pg/#/day]	17 POC prod std dev [±]	18 PIC prod/cell [pg/#/day]	19 PIC prod std dev [±]	20 PIC/POC	21 PIC/POC ratio std dev [±]	22 POC/PON	23 POC/PON std dev [±]	24 AT [µmol/kg] (Potentiometric titration)	25 AT std dev [±] (Potentiometric titration)	26 DIC [µmol/kg]	27 DIC std dev [±]	28 pH (total scale, Calculated using...)	29 pH std dev [±] (total scale, Calculated using...)	30 [HCO3]- [µmol/kg] (Calculated using CO2SYS)	31 [HCO3]- std dev [±] (Calculated using CO2SYS)	32 [CO3]2- [µmol/kg] (Calculated using CO2SYS)	33 [CO3]2- std dev [±] (Calculated using CO2SYS)	34 CO2 [µmol/kg] (Calculated using CO2SYS)	35 CO2 std dev [±] (Calculated using CO2SYS)	36 Omega Cal (Calculated using CO2SYS)	37 Omega Cal std dev [±] (Calculated using CO2SYS)	38 Temp [°C]	39 Sal	40 PHSPHT [µmol/kg]	41 CSC flag (Calculated using seacarb afte...)	42 pH (total scale, Calculated using...)	43 CO2 [µmol/kg] (Calculated using seacarb afte...)	44 fCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	45 pCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	46 [HCO3]- [µmol/kg] (Calculated using seacarb afte...)	47 [CO3]2- [µmol/kg] (Calculated using seacarb afte...)	48 Omega Arg (Calculated using seacarb afte...)	49 Omega Cal (Calculated using seacarb afte...)
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	51	4	50	0.50	0.002	95	2	0.29	0.003	321	5	8.18	0.229	10.79	0.437	1.30	0.053	7.55	0.209	2294	34.0	2066	19	7.96	0.04	1882	17	167	15	16.7	1.6	4.0	0.3	20	35	4	15	7.98	15.33	472.99	474.60	1888.00	162.67	2.53	3.89
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	51	4	100	0.72	0.003	111	3	0.29	0.001	381	11	17.04	0.670	23.80	2.492	1.40	0.146	8.04	0.316	2294	34.0	2066	19	7.96	0.04	1882	17	167	15	16.7	1.6	4.0	0.3	20	35	4	15	7.98	15.33	472.99	474.60	1888.00	162.67	2.53	3.89
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	51	4	200	1.09	0.011	117	2	0.27	0.002	434	6	19.51	0.343	33.80	1.672	1.73	0.086	6.74	0.118	2294	34.0	2066	19	7.96	0.04	1882	17	167	15	16.7	1.6	4.0	0.3	20	35	4	15	7.98	15.33	472.99	474.60	1888.00	162.67	2.53	3.89
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	51	4	400	1.19	0.013	143	2	0.26	0.004	539	4	33.85	2.514	46.58	12.711	1.38	0.097	7.22	0.536	2294	34.0	2066	19	7.96	0.04	1882	17	167	15	16.7	1.6	4.0	0.3	20	35	4	15	7.98	15.33	472.99	474.60	1888.00	162.67	2.53	3.89
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	51	4	600	1.21	0.006	154	3	0.23	0.006	678	14	32.59	1.028	52.69	4.065	1.62	0.125	7.32	0.231	2294	34.0	2066	19	7.96	0.04	1882	17	167	15	16.7	1.6	4.0	0.3	20	35	4	15	7.98	15.33	472.99	474.60	1888.00	162.67	2.53	3.89
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	51	4	800	1.26	0.007	157	2	0.23	0.006	692	10	29.47	0.233	48.78	1.374	1.66	0.047	6.90	0.055	2294	34.0	2066	19	7.96	0.04	1882	17	167	15	16.7	1.6	4.0	0.3	20	35	4	15	7.98	15.33	472.99	474.60	1888.00	162.67	2.53	3.89
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	105	9	50	0.52	0.007	92	1	0.29	0.002	316	5	7.07	0.098	6.96	0.311	0.98	0.439	6.75	0.094	2325	14.0	2213	19	7.69	0.04	2080	22	100	8	34.1	3.3	2.4	0.2	20	35	4	15	7.71	31.81	981.68	985.02	2085.55	95.64	1.49	2.29
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	105	9	100	0.78	0.004	101	2	0.29	0.002	352	6	17.84	0.722	17.27	1.472	0.97	0.825	6.73	0.273	2325	14.0	2213	19	7.69	0.04	2080	22	100	8	34.1	3.3	2.4	0.2	20	35	4	15	7.71	31.81	981.68	985.02	2085.55	95.64	1.49	2.29
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	105	9	200	0.90	0.010	126	2	0.26	0.004	487	8	25.82	3.484	19.19	3.577	0.74	0.139	6.91	0.933	2325	14.0	2213	19	7.69	0.04	2080	22	100	8	34.1	3.3	2.4	0.2	20	35	4	15	7.71	31.81	981.68	985.02	2085.55	95.64	1.49	2.29
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	105	9	400	0.95	0.007	157	3	0.24	0.003	643	9	28.66	4.087	18.71	4.367	0.65	0.152	6.05	0.863	2325	14.0	2213	19	7.69	0.04	2080	22	100	8	34.1	3.3	2.4	0.2	20	35	4	15	7.71	31.81	981.68	985.02	2085.55	95.64	1.49	2.29
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	105	9	600	0.89	0.008	180	10	0.24	0.005	748	38	21.16	1.988	23.35	2.075	1.10	0.098	5.99	0.563	2325	14.0	2213	19	7.69	0.04	2080	22	100	8	34.1	3.3	2.4	0.2	20	35	4	15	7.71	31.81	981.68	985.02	2085.55	95.64	1.49	2.29
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	105	9	800	0.88	0.007	155	17	0.20	0.010	773	71	19.89	1.391	21.64	0.777	1.12	0.040	6.27	0.451	2325	14.0	2213	19	7.69	0.04	2080	22	100	8	34.1	3.3	2.4	0.2	20	35	4	15	7.71	31.81	981.68	985.02	2085.55	95.64	1.49	2.29
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	152	12	50	0.50	0.016	84	4	0.28	0.003	295	11	8.19	0.077	5.55	2.157	0.81	0.013	6.76	0.052	2331	9.6	2196	17	7.54	0.03	2149	17	74	5	49.4	4.4	1.8	0.1	20	35	4	15	7.77	27.39	845.25	848.13	2060.21	108.39	1.69	2.59
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	152	12	100	0.64	0.008	112	2	0.29	0.004	381	4	12.53	1.106	7.03	1.457	0.56	0.116	6.81	0.601	2331	9.6	2196	17	7.54	0.03	2149	17	74	5	49.4	4.4	1.8	0.1	20	35	4	15	7.77	27.39	845.25	848.13	2060.21	108.39	1.69	2.59
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	152	12	200	0.70	0.007	130	3	0.27	0.002	471	13	15.52	2.054	8.13	2.252	0.52	0.145	7.62	1.008	2331	9.6	2196	17	7.54	0.03	2149	17	74	5	49.4	4.4	1.8	0.1	20	35	4	15	7.77	27.39	845.25	848.13	2060.21	108.39	1.69	2.59
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	152	12	400	0.72	0.006	171	10	0.26	0.006	654	35	12.96	0.938	14.01	1.585	1.08	0.122	6.83	0.494	2331	9.6	2196	17	7.54	0.03	2149	17	74	5	49.4	4.4	1.8	0.1	20	35	4	15	7.77	27.39	845.25	848.13	2060.21	108.39	1.69	2.59
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	152	12	600	0.69	0.006	153	7	0.20	0.006	773	39	13.88	1.468	10.33	1.083	0.74	0.078	6.50	0.687	2331	9.6	2196	17	7.54	0.03	2149	17	74	5	49.4	4.4	1.8	0.1	20	35	4	15	7.77	27.39	845.25	848.13	2060.21	108.39	1.69	2.59
laboratory	Gephyrocapsa oceanica (phytoplankton)	235955	marinespecies.org	152	12	800	0.69	0.004	130	11	0.12	0.011	1028	20	14.92	2.454	13.26	0.748	0.89	0.050	6.20	1.020	2331	9.6	2196	17	7.54	0.03	2149	17	74	5	49.4	4.4	1.8	0.1	20	35	4	15	7.77	27.39	845.25	848.13	2060.21	108.39	1.69	2.59