Citation:

PANGAEA.920025

Name: Seawater carbonate chemistry and photosynthesis and photochemical efficiency of Porolithon onkodes
Published: 2019
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Benthos; Calcification/Dissolution; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Laboratory experiment; Light; Macroalgae; Plantae; Porolithon onkodes; Primary production/Photosynthesis; Respiration; Rhodophyta; Single species; South Pacific; Tropical

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Abstract:

Ocean acidification (OA) is predicted to enhance photosynthesis in many marine taxa. However, photophysiology has multiple components that OA may affect differently, especially under different light environments, with potentially contrasting consequences for photosynthetic performance. Furthermore, because photosynthesis affects energetic budgets and internal acid-base dynamics, changes in it due to OA or light could mediate the sensitivity of other biological processes to OA (e.g. respiration and calcification). To better understand these effects, we conducted experiments on Porolithon onkodes, a common crustose coralline alga in Pacific coral reefs, crossing pCO2 and light treatments. Results indicate OA inhibited some aspects of photophysiology (maximum photochemical efficiency), facilitated others (alpha, the responsiveness of photosynthesis to sub-saturating light), and had no effect on others (maximum gross photosynthesis), with the first two effects depending on treatment light level. Light also exacerbated the increase in dark-adapted respiration under OA, but did not alter the decline in calcification. Light-adapted respiration did not respond to OA, potentially due to indirect effects of photosynthesis. Combined, results indicate OA will interact with light to alter energetic budgets and potentially resource allocation among photosynthetic processes in P. onkodes, likely shifting its light tolerance, and constraining it to a narrower range of light environments.

Keyword(s):

Benthos; Calcification/Dissolution; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Laboratory experiment; Light; Macroalgae; Plantae; Porolithon onkodes; Primary production/Photosynthesis; Respiration; Rhodophyta; Single species; South Pacific; Tropical

Supplement to:

Briggs, Amy A; Carpenter, Robert C (2019): Contrasting responses of photosynthesis and photochemical efficiency to ocean acidification under different light environments in a calcifying alga. Scientific Reports, 9(1), https://doi.org/10.1038/s41598-019-40620-8

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)

Coverage:

Latitude: -17.483910 * Longitude: -149.838690

Date/Time Start: 2015-01-01T00:00:00 * Date/Time End: 2015-02-28T00:00:00

Event(s):

Cooks_Bay_Moorea * Latitude: -17.483910 * Longitude: -149.838690 * Date/Time Start: 2015-01-01T00:00:00 * Date/Time End: 2015-02-28T00:00:00 * Method/Device: Experiment (EXP)

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		Briggs, Amy A		study
2	Species	Species		Briggs, Amy A
3	Registration number of species	Reg spec no		Briggs, Amy A
4	Uniform resource locator/link to reference	URL ref		Briggs, Amy A		WoRMS Aphia ID
5	Experiment	Exp		Briggs, Amy A
6	Identification	ID		Briggs, Amy A		Sample
7	Identification	ID		Briggs, Amy A		Tank
8	Treatment	Treat		Briggs, Amy A
9	Surface area	SA	cm²	Briggs, Amy A
10	Calcification rate of calcium carbonate	Calc rate CaCO3	mg/cm²/day	Briggs, Amy A
11	Net photosynthesis rate, oxygen	PN O2	µmol/cm²/h	Briggs, Amy A
12	Respiration rate, oxygen	Resp O2	µmol/cm²/h	Briggs, Amy A
13	Gross photosynthesis rate, oxygen	PG O2	µmol/cm²/h	Briggs, Amy A
14	Irradiance	E	µmol/m²/s	Briggs, Amy A
15	Slope	Slope		Briggs, Amy A		no
16	Respiration rate, oxygen	Resp O2	µmol/cm²/h	Briggs, Amy A		dark adapted
17	Fluorescence, minimum	Fo		Briggs, Amy A
18	Fluorescence, maximum	Fm		Briggs, Amy A
19	Maximum photochemical quantum yield of photosystem II	Fv/Fm		Briggs, Amy A
20	Maximum gross photosynthesis rate, oxygen	Pmax O2	µmol/cm²/h	Briggs, Amy A
21	Initial slope of the photosynthesis-irradiance curve	alpha	(µmol/cm²/h)/(µE/m²/s)	Briggs, Amy A
22	Light saturation	Ek	µmol/m²/s	Briggs, Amy A
23	Temperature, water	Temp	°C	Briggs, Amy A
24	Temperature, water, standard error	T std e	±	Briggs, Amy A
25	Alkalinity, total	AT	µmol/kg	Briggs, Amy A	Potentiometric titration
26	Alkalinity, total, standard error	AT std e	±	Briggs, Amy A	Potentiometric titration
27	pH	pH		Briggs, Amy A	Potentiometric	total scale
28	pH, standard error	pH std e	±	Briggs, Amy A	Potentiometric	total scale
29	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Briggs, Amy A	Calculated using seacarb
30	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error	pCO2water_SST_wet std e	±	Briggs, Amy A	Calculated using seacarb
31	Bicarbonate ion	[HCO3]-	µmol/kg	Briggs, Amy A	Calculated using seacarb
32	Bicarbonate ion, standard error	[HCO3]- std e	±	Briggs, Amy A	Calculated using seacarb
33	Carbonate ion	[CO3]2-	µmol/kg	Briggs, Amy A	Calculated using seacarb
34	Carbonate ion, standard error	[CO3]2- std e	±	Briggs, Amy A	Calculated using seacarb
35	Calcite saturation state	Omega Cal		Briggs, Amy A	Calculated using seacarb
36	Calcite saturation state, standard error	Omega Cal std e	±	Briggs, Amy A	Calculated using seacarb
37	Irradiance	E	µmol/m²/s	Briggs, Amy A
38	Irradiance, standard error	E std e	±	Briggs, Amy A
39	Salinity	Sal		Briggs, Amy A
40	Salinity, standard error	Sal std e	±	Briggs, Amy A
41	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
42	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
43	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)
44	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)
45	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
46	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
47	Carbon, inorganic, dissolved	DIC	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 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

36941 data points

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