Citation:

bg-2019-97

Name: Acidification and irradiance effect on the photo-physiological fitness, growth and carbon production of the Antarctic cryptophyte Geminigera cryophila
Creator: Scarlett Trimborn
Published: 2019-07-17
License: https://creativecommons.org/licenses/by/4.0/
Keywords: cryptophytes; irradiance; Ocean acidification; Southern Ocean

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Abstract:

Ecophysiological studies on Antarctic cryptophytes to assess whether climatic changes such as ocean acidification and enhanced stratification affect their growth in Antarctic coastal waters in the future are lacking so far. This is the first study that investigates the combined effects of the increasing availability of pCO2 (400 and 1000 μatm) and irradiance (20, 200 and 500 μmol photons m-2 s-1) on growth, elemental composition and photo-physiology of the Antarctic cryptophyte Geminigera cryophila. Under ambient pCO2, this species was characterized by a pronounced sensitivity to increasing irradiance with complete growth inhibition at the highest light intensity. Interestingly, when grown under high pCO2 this negative light effect vanished, and it reached the highest rates of growth and particulate organic carbon production at the highest irradiance compared to the other tested experimental conditions. Our results for G. cryophila reveal beneficial effects of ocean acidification in conjunction with enhanced irradiance on growth and photosynthesis. Hence, cryptophytes such as G. cryophila may be potential winners of climate change, potentially thriving better in more stratified and acidic coastal waters and contributing in higher abundance to future phytoplankton assemblages of coastal Antarctic waters.

Keyword(s):

cryptophytes; irradiance; Ocean acidification; Southern Ocean

Comment:

#999: not grown

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Type	Type		Trimborn, Scarlett
2	Species	Species		Trimborn, Scarlett
3	Registration number of species	Reg spec no		Trimborn, Scarlett
4	Uniform resource locator/link to reference	URL ref		Trimborn, Scarlett	WoRMS Aphia ID
5	Treatment: light intensity	T:Io	µmol/m²/s	Trimborn, Scarlett	Irradiance
6	Treatment: partial pressure of carbon dioxide	T:pCO2	µatm	Trimborn, Scarlett	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)
7	Phytoplankton growth rate	Phytopl µ	1/day	Trimborn, Scarlett
8	Growth rate, standard deviation	µ std dev	±	Trimborn, Scarlett
9	Carbon, organic, particulate, per cell	POC/cell	pg/#	Trimborn, Scarlett
10	Carbon, organic, particulate, standard deviation	POC std dev	±	Trimborn, Scarlett	pg C/cell
11	Particulate organic carbon production per cell	POC prod/cell	pg/#/day	Trimborn, Scarlett
12	Particulate organic carbon, production, standard deviation	POC prod std dev	±	Trimborn, Scarlett	pg C/cell/day
13	Nitrogen, organic, particulate, per cell	PON/cell	pg/#	Trimborn, Scarlett
14	Nitrogen, organic, particulate, per cell, standard deviation	PON/cell std dev	±	Trimborn, Scarlett
15	Production of particulate organic nitrogen	PON prod	pg/#/day	Trimborn, Scarlett
16	Particulate organic nitrogen production, standard deviation	PON prod std dev	±	Trimborn, Scarlett	pg N/cell/day
17	Carbon/Nitrogen ratio	C/N	mol/mol	Trimborn, Scarlett
18	Carbon/Nitrogen ratio, standard deviation	C/N std dev	±	Trimborn, Scarlett
19	Maximum photochemical quantum yield of photosystem II	Fv/Fm		Trimborn, Scarlett
20	Maximum photochemical quantum yield of photosystem II, standard deviation	Fv/Fm std dev	±	Trimborn, Scarlett
21	Recovery	Recovery	%	Trimborn, Scarlett	Fv/Fm recovery [% of initial]
22	Standard deviation	Std dev	±	Trimborn, Scarlett	Fv/Fm recovery [% of initial] std dev
23	Functional photosystem II reaction centers, per cell	RCII/cell	zmol/#	Trimborn, Scarlett
24	Functional photosystem II reaction centers, standard deviation	RCII std dev	±	Trimborn, Scarlett
25	Connectivity between photosystem II	p		Trimborn, Scarlett
26	Connectivity between photosystem II, standard deviation	p std dev	±	Trimborn, Scarlett
27	Functional absorption cross sections of photosystem II reaction centers	Sigma PSII	nm²	Trimborn, Scarlett
28	Functional absorption cross sections of photosystem II reaction centers, standard deviation	Sigma PSII std dev	±	Trimborn, Scarlett
29	Re-oxidation time of the Qa acceptor	tQa	µs	Trimborn, Scarlett
30	Re-oxidation time of the Qa acceptor, standard deviation	tQa std dev	±	Trimborn, Scarlett
31	Irradiance	E	µmol/m²/s	Trimborn, Scarlett
32	Electron transport rate, absolute	aETR	e/PSII/s	Trimborn, Scarlett
33	Electron transport rate, absolute, standard deviation	aETR std dev	±	Trimborn, Scarlett
34	Non photochemical quenching	NPQ		Trimborn, Scarlett
35	Non photochemical quenching, standard deviation	NPQ std dev	±	Trimborn, Scarlett

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

640 data points

Data

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

1 Type	2 Species	3 Reg spec no	4 URL ref	5 T:Io [µmol/m²/s]	6 T:pCO2 [µatm]	7 Phytopl µ [1/day]	8 µ std dev [±]	9 POC/cell [pg/#]	10 POC std dev [±]	11 POC prod/cell [pg/#/day]	12 POC prod std dev [±]	13 PON/cell [pg/#]	14 PON/cell std dev [±]	15 PON prod [pg/#/day]	16 PON prod std dev [±]	17 C/N [mol/mol]	18 C/N std dev [±]	19 Fv/Fm	20 Fv/Fm std dev [±]	21 Recovery [%]	22 Std dev [±]	23 RCII/cell [zmol/#]	24 RCII std dev [±]	25 p	26 p std dev [±]	27 Sigma PSII [nm²]	28 Sigma PSII std dev [±]	29 tQa [µs]	30 tQa std dev [±]	31 E [µmol/m²/s]	32 aETR [e/PSII/s]	33 aETR std dev [±]	34 NPQ	35 NPQ std dev [±]
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400	0.13	0.00	121.10	6.49	16.0	1.0	23.05	1.38	3.04	0.22	6.1	0.1	0.41	0.02	89.6	4.8	604	63	0.40	0.03	4.10	0.11	825	49
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400	0.19	0.03	113.67	16.83	21.1	2.1	23.22	3.21	4.31	0.24	5.7	0.2	0.37	0.01	99.4	3.9	370	30	0.36	0.03	4.25	0.17	744	31
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	400	#999.00	#999.00	#999.00	#999.00	#999.0	#999.0	#999.00	#999.00	#999.00	#999.00	#999.0	#999.0	#999.00	#999.00	#999.0	#999.0	#999	#999	#999.00	#999.00	#999.00	#999.00	#999	#999
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000	0.09	0.02	136.07	6.08	11.8	3.6	28.95	1.63	2.53	0.80	5.5	0.1	0.48	0.01	90.6	1.9	383	62	0.41	0.02	4.49	0.08	798	19
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000	0.17	0.04	116.57	9.94	19.9	2.7	23.21	2.31	3.98	0.71	5.9	0.3	0.39	0.02	94.3	2.2	550	32	0.32	0.06	4.14	0.21	772	40
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000	0.25	0.02	108.86	6.72	27.7	0.9	24.39	1.53	6.19	0.21	5.2	0.1	0.33	0.02	93.7	1.4	454	67	0.26	0.04	4.89	0.17	681	14
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									35	59	2	0.07	0.04
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									60	84	14	0.20	0.14
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									84	103	27	0.30	0.19
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									108	119	30	0.41	0.17
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									156	147	22	0.57	0.09
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									201			0.69	0.01
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									246	123	31	0.71	0.10
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									352	133	24	0.81	0.08
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	400																									658	110	5	0.97	0.06
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									35	73	3	0.01	0.04
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									60	101	5	0.12	0.11
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									84	127	4	0.15	0.05
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									108	158	3	0.18	0.03
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									201	231	10	0.29	0.02
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									246	254	23	0.29	0.06
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									352	275	39	0.36	0.13
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	20	1000																									658	244	55	0.52	0.12
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									35	76	1	-0.06	0.02
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									60	114	9	-0.01	0.03
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									84	153	12	0.04	0.03
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									108	179	17	0.17	0.05
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									156	205	23	0.57	0.09
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									268	233	55	1.28	0.12
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									395	242	69	1.65	0.11
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									640	317	76	1.90	0.08
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	400																									873	263	78	2.10	0.08
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									60	101	5	0.02	0.06
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									84	132	10	0.19	0.10
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									108	153	18	0.39	0.16
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									156	187	25	0.82	0.31
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									268	232	44	1.32	0.45
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									395	242	79	1.67	0.38
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									640	269	82	2.16	0.37
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	200	1000																									873	307	55	2.38	0.33
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									60	126	7	0.10	0.03
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									108	203	13	0.28	0.10
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									201	274	18	0.84	0.16
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									310	313	27	1.34	0.11
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									454	362	26	1.68	0.13
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									675	364	46	2.02	0.11
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									903	404	56	2.21	0.12
laboratory	Geminigera cryophila (phytoplankton)	341616	marinespecies.org	500	1000																									1324	433	82	2.42	0.13