Citation:

PANGAEA.919773

Name: Seawater carbonate chemistry and particulate inorganic carbon, particulate organic carbon production, and growth rates of Scyphosphaera apsteinii
Published: 2019
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Chromista; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Light; Not applicable; Phytoplankton; Primary production/Photosynthesis; Scyphosphaera apsteinii; Single species

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Abstract:

Coccolithophores are unicellular marine phytoplankton and important contributors to global carbon cycling. Most work on coccolithophore sensitivity to climate change has been on the small, abundant bloom-forming species Emiliania huxleyi and Gephyrocapsa oceanica. However, large coccolithophore species can be major contributors to coccolithophore community production even in low abundances. Here we fit an analytical equation, accounting for simultaneous changes in CO2 and light intensity, to rates of photosynthesis, calcification and growth in Scyphosphaera apsteinii. Comparison of responses to G. oceanica and E. huxleyi revealed S. apsteinii is a low-light adapted species and, in contrast, becomes more sensitive to changing environmental conditions when exposed to unfavourable CO2 or light. Additionally, all three species decreased their light requirement for optimal growth as CO2 levels increased. Our analysis suggests that this is driven by a drop in maximum rates and, in G. oceanica, increased substrate uptake efficiency. Increasing light intensity resulted in a higher proportion of muroliths (plate-shaped) to lopadoliths (vase shaped) and liths became richer in calcium carbonate as calcification rates increased. Light and CO2 driven changes in response sensitivity and maximum rates are likely to considerably alter coccolithophore community structure and productivity under future climate conditions.

Keyword(s):

Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Chromista; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Light; Not applicable; Phytoplankton; Primary production/Photosynthesis; Scyphosphaera apsteinii; Single species

Supplement to:

Gafar, Natasha A; Eyre, Bradley D; Schulz, Kai Georg (2019): A comparison of species specific sensitivities to changing light and carbonate chemistry in calcifying marine phytoplankton. Scientific Reports, 9(1), https://doi.org/10.1038/s41598-019-38661-0

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 2020-06-12.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Gafar, Natasha A		study
2	Species	Species		Gafar, Natasha A
3	Registration number of species	Reg spec no		Gafar, Natasha A
4	Uniform resource locator/link to reference	URL ref		Gafar, Natasha A		WoRMS Aphia ID
5	Salinity	Sal		Gafar, Natasha A
6	Temperature, water	Temp	°C	Gafar, Natasha A
7	Growth rate	µ	1/day	Gafar, Natasha A
8	Particulate organic carbon production per cell	POC prod/cell	pg/#/day	Gafar, Natasha A
9	Carbon, inorganic, particulate, per cell	PIC/cell	pg/#	Gafar, Natasha A
10	Carbon, organic, particulate, per cell	POC/cell	pg/#	Gafar, Natasha A
11	Carbon, inorganic, particulate, per cell	PIC/cell	pg/#	Gafar, Natasha A
12	Particulate inorganic carbon/particulate organic carbon ratio	PIC/POC		Gafar, Natasha A
13	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Gafar, Natasha A	Calculated using CO2SYS
14	Carbon dioxide	CO2	µmol/kg	Gafar, Natasha A	Calculated using CO2SYS
15	Bicarbonate ion	[HCO3]-	µmol/kg	Gafar, Natasha A	Calculated using CO2SYS
16	Carbonate ion	[CO3]2-	µmol/kg	Gafar, Natasha A	Calculated using CO2SYS
17	pH	pH		Gafar, Natasha A	Calculated using CO2SYS	total scale
18	Hydrogen ion concentration	H+	µmol/kg	Gafar, Natasha A	Calculated using CO2SYS
19	Alkalinity, total	AT	µmol/kg	Gafar, Natasha A
20	Carbon, inorganic, dissolved	DIC	µmol/kg	Gafar, Natasha A
21	Irradiance	E	µmol/m²/s	Gafar, Natasha A
22	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Gafar, Natasha A	Calculated using CO2SYS
23	Number	n	#	Gafar, Natasha A		Muroliths
24	Number, standard deviation	Num std dev	±	Gafar, Natasha A		Murolith
25	Length	l	µm	Gafar, Natasha A		Murolith
26	Length, standard deviation	l std dev	±	Gafar, Natasha A		Murolith
27	Width	w	µm	Gafar, Natasha A		Murolith
28	Width, standard deviation	w std dev	±	Gafar, Natasha A		Murolith
29	Number	n	#	Gafar, Natasha A		Lopadoliths
30	Number, standard deviation	Num std dev	±	Gafar, Natasha A		Lopadoliths
31	Length	l	µm	Gafar, Natasha A		Lopadoliths
32	Length, standard deviation	l std dev	±	Gafar, Natasha A		Lopadoliths
33	Width	w	µm	Gafar, Natasha A		Lopadoliths
34	Width, standard deviation	w std dev	±	Gafar, Natasha A		Lopadoliths
35	Ratio	Ratio		Gafar, Natasha A		Murolith:Lopadolith
36	Ratio, standard deviation	Ratio std dev	±	Gafar, Natasha A		Murolith:Lopadolith
37	Cell biovolume	Cell biovol	µm³	Gafar, Natasha A
38	Cell biovolume, standard deviation	Cell biovol std dev	±	Gafar, Natasha A
39	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
40	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
41	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
42	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)
43	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)
44	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
45	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
46	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
47	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1384 data points

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