Citation:

PANGAEA.922459

Name: Seawater carbonate chemistry and growth and particulate organic nitrogen production of diatom Thalassiosira pseudonana
Published: 2020-09-08
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Growth/Morphology; Laboratory experiment; Laboratory strains; Light; Not applicable; Ocean acidification; Ochrophyta; Phytoplankton; Primary production/Photosynthesis; Single species; Thalassiosira pseudonana

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Published: 2020-09-08 • DOI registered: 2020-10-07

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Abstract:

Phytoplankton in the upper oceans are exposed to changing light levels due to mixing, diurnal solar cycles and weather conditions. Consequently, effects of ocean acidification are superimposed upon responses to variable light levels. We therefore grew a model diatom Thalassiosira pseudonana under either constant or variable light but at the same daily photon dose, with current low (400 μatm, LC) and future high CO2 (1000 μatm, HC) treatments. Variable light, compared with the constant light regime, decreased the growth rate, Chl a, Chl c, and carotenoid contents under both LC and HC conditions. Cells grown under variable light appeared more tolerant of high light as indicated by higher maximum relative electron transport rate and saturation light. Light variation interacted with high CO2/lowered pH to decrease the carbon fixation rate, but increased particulate organic carbon (POC) and particularly nitrogen (PON) per cell, which drove a decrease in C/N ratio, reflecting changes in the efficiency of energy transfer from photo-chemistry to net biomass production. Our results imply that elevated pCO2 under varying light conditions can lead to less primary productivity but more PON per biomass of the diatom, which might improve the food quality of diatoms and thereby influence biogeochemical nitrogen cycles.

Keyword(s):

Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Growth/Morphology; Laboratory experiment; Laboratory strains; Light; Not applicable; Ocean acidification; Ochrophyta; Phytoplankton; Primary production/Photosynthesis; Single species; Thalassiosira pseudonana

Supplement to:

Li, Wei; Wang, Tifeng; Campbell, Douglas A; Gao, Kunshan (2020): Ocean acidification interacts with variable light to decrease growth but increase particulate organic nitrogen production in a diatom. Marine Environmental Research, 160, 104965, https://doi.org/10.1016/j.marenvres.2020.104965

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2019): seacarb: seawater carbonate chemistry with R. R package version 3.2.12. 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, 2019) 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 by seacarb is 2020-07-07.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Gao, Kunshan		study
2	Species	Species		Gao, Kunshan
3	Registration number of species	Reg spec no		Gao, Kunshan
4	Uniform resource locator/link to reference	URL ref		Gao, Kunshan		WoRMS Aphia ID
5	Treatment	Treat		Gao, Kunshan
6	Growth rate	µ	1/day	Gao, Kunshan
7	Growth rate, standard deviation	µ std dev	±	Gao, Kunshan
8	Time of day	Time of day		Gao, Kunshan
9	Growth rate	µ	1/h	Gao, Kunshan
10	Growth rate, standard deviation	µ std dev	±	Gao, Kunshan
11	Cell size	Cell size	µm	Gao, Kunshan
12	Cell size, standard deviation	Cell size std dev	±	Gao, Kunshan
13	Chlorophyll a per cell	Chl a/cell	pg/#	Gao, Kunshan
14	Chlorophyll a, standard deviation	Chl a std dev	±	Gao, Kunshan
15	Carotenoids per cell	Carotenoids/cell	pg/#	Gao, Kunshan
16	Carotenoids, standard deviation	Carotenoids std dev	±	Gao, Kunshan
17	Chlorophyll c per cell	Chl c/cell	pg/#	Gao, Kunshan
18	Chlorophyll c, standard deviation	Chl c std dev	±	Gao, Kunshan
19	Carotenoids/Chlorophyll a ratio	Carotenoids/Chl a		Gao, Kunshan
20	Carotenoids/Chlorophyll a ratio, standard deviation	Carotenoids/Chl a std dev	±	Gao, Kunshan
21	Irradiance	E	µmol photons/m²/s	Gao, Kunshan
22	Electron transport rate, relative	rETR		Gao, Kunshan		Light Curve-14:00
23	Electron transport rate, relative, standard deviation	rETR std dev	±	Gao, Kunshan		Light Curve-14:00
24	Electron transport rate, relative	rETR		Gao, Kunshan		Light Curve-17:00
25	Electron transport rate, relative, standard deviation	rETR std dev	±	Gao, Kunshan		Light Curve-17:00
26	Electron transport rate, relative	rETR		Gao, Kunshan		Light Curve-19:00
27	Electron transport rate, relative, standard deviation	rETR std dev	±	Gao, Kunshan		Light Curve-19:00
28	Maximal electron transport rate, relative	rETR max		Gao, Kunshan
29	Maximal electron transport rate, relative, standard deviation	rETR max std dev	±	Gao, Kunshan
30	Electron transport rate efficiency	alpha		Gao, Kunshan
31	Electron transport rate efficiency, standard deviation	alpha std dev	±	Gao, Kunshan
32	Effective quantum yield	Y		Gao, Kunshan
33	Effective quantum yield, standard deviation	Y std dev	±	Gao, Kunshan
34	Light saturation point	Ik		Gao, Kunshan
35	Light saturation point, standard deviation	Ik std dev	±	Gao, Kunshan
36	Carbon, organic, particulate, per cell	POC/cell	pg/#	Gao, Kunshan
37	Carbon, organic, particulate, standard deviation	POC std dev	±	Gao, Kunshan
38	Nitrogen, organic, particulate, per cell	PON/cell	pg/#	Gao, Kunshan
39	Nitrogen, organic, particulate, standard deviation	PON std dev	±	Gao, Kunshan
40	Carbon/Nitrogen ratio	C/N		Gao, Kunshan
41	Carbon/Nitrogen ratio, standard deviation	C/N std dev	±	Gao, Kunshan
42	Total carbon fixation per cell per hour	Total C fix/cell	pg/#/h	Gao, Kunshan
43	Carbon fixation rate, standard deviation	C fix std dev	±	Gao, Kunshan
44	Carbon, organic, particulate, production per cell	POC prod/cell	pg/#/day	Gao, Kunshan
45	Carbon, organic, particulate, production, standard deviation	POC prod std dev	±	Gao, Kunshan
46	Nitrogen, organic, particulate, production	PON prod	pg/#/day	Gao, Kunshan
47	Nitrogen, organic, particulate, production, standard deviation	PON prod std dev	±	Gao, Kunshan
48	Chlorophyll a, intracellular	Chl a in	g/l	Gao, Kunshan
49	Chlorophyll a, standard deviation	Chl a std dev	±	Gao, Kunshan
50	Chlorophyll c, intracellular	Chl c in	g/l	Gao, Kunshan
51	Chlorophyll c, standard deviation	Chl c std dev	±	Gao, Kunshan
52	Carotenoids, intracellular	Carotenoids in	g/l	Gao, Kunshan
53	Carotenoids, standard deviation	Carotenoids std dev	±	Gao, Kunshan
54	Carbon fixation rate	C fix	fg/µm³/h	Gao, Kunshan
55	Carbon fixation rate, standard deviation	C fix std dev	±	Gao, Kunshan
56	Carbon, organic, particulate	POC	fg/µm³	Gao, Kunshan
57	Carbon, organic, particulate, standard deviation	POC std dev	±	Gao, Kunshan
58	Nitrogen, organic, particulate	PON	fg/µm³	Gao, Kunshan
59	Nitrogen, organic, particulate, standard deviation	PON std dev	±	Gao, Kunshan
60	Carbon, organic, particulate, production	POC prod	pg/µm³/day	Gao, Kunshan
61	Carbon, organic, particulate, production, standard deviation	POC prod std dev	±	Gao, Kunshan
62	Nitrogen, organic, particulate, production	PON prod	pg/µm³/day	Gao, Kunshan
63	Nitrogen, organic, particulate, production, standard deviation	PON prod std dev	±	Gao, Kunshan
64	Salinity	Sal		Gao, Kunshan
65	Temperature, water	Temp	°C	Gao, Kunshan
66	pH, total scale	pHT		Gao, Kunshan		total scale
67	pH, standard deviation	pH std dev	±	Gao, Kunshan		total scale
68	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Gao, Kunshan
69	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Gao, Kunshan
70	Alkalinity, total	AT	µmol/kg	Gao, Kunshan	Calculated using CO2SYS
71	Alkalinity, total, standard deviation	AT std dev	±	Gao, Kunshan	Calculated using CO2SYS
72	Carbon, inorganic, dissolved	DIC	µmol/kg	Gao, Kunshan	Calculated using CO2SYS
73	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Gao, Kunshan	Calculated using CO2SYS
74	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Gao, Kunshan	Calculated using CO2SYS
75	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Gao, Kunshan	Calculated using CO2SYS
76	Bicarbonate ion	[HCO3]-	µmol/kg	Gao, Kunshan	Calculated using CO2SYS
77	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Gao, Kunshan	Calculated using CO2SYS
78	Carbon dioxide	CO2	µmol/kg	Gao, Kunshan	Calculated using CO2SYS
79	Carbon dioxide, standard deviation	CO2 std dev	±	Gao, Kunshan	Calculated using CO2SYS
80	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
81	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
82	Carbon dioxide, standard deviation	CO2 std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
83	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)
84	Fugacity of carbon dioxide in seawater, standard deviation	fCO2 std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
85	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
86	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
87	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
88	Carbonate ion, standard deviation	[CO3]2- std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
89	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
90	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
91	Alkalinity, total	AT	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
92	Alkalinity, total, standard deviation	AT std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
93	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
94	Aragonite saturation state, standard deviation	Omega Arg std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)
95	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
96	Calcite saturation state, standard deviation	Omega Cal std dev	±	Yang, Yan	Calculated using seacarb after Orr et al. (2018)

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

2936 data points

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