Citation:

jpy.12085

Name: Seawater carbonate chemistry, calcification, primary production and respiration of a temperate rhodolith Lithothamnion corallioides in a laboratory experiment
Published: 2013
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Coast and continental shelf; Laboratory experiment; Lithothamnion corallioides; Macroalgae; North Atlantic; Plantae; Primary production/Photosynthesis; Respiration; Rhodophyta; Single species; Temperate; Temperature

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Abstract:

Coralline algae are considered among the most sensitive species to near future ocean acidification. We tested the effects of elevated pCO2 on the metabolism of the free-living coralline alga Lithothamnion corallioides ("maerl") and the interactions with changes in temperature. Specimens were collected in North Brittany (France) and grown for 3 months at pCO2 of 380 (ambient pCO2), 550, 750, and 1000 µatm (elevated pCO2) and at successive temperatures of 10°C (ambient temperature in winter), 16°C (ambient temperature in summer), and 19°C (ambient temperature in summer +3°C). At each temperature, gross primary production, respiration (oxygen flux), and calcification (alkalinity flux) rates were assessed in the light and dark. Pigments were determined by HPLC. Chl a, carotene, and zeaxanthin were the three major pigments found in L. corallioides thalli. Elevated pCO2 did not affect pigment content while temperature slightly decreased zeaxanthin and carotene content at 10°C. Gross production was not affected by temperature but was significantly affected by pCO2 with an increase between 380 and 550 µatm. Light, dark, and diel (24 h) calcification rates strongly decreased with increasing pCO2 regardless of the temperature. Although elevated pCO2 only slightly affected gross production in L. corallioides, diel net calcification was reduced by up to 80% under the 1,000 µatm treatment. Our findings suggested that near future levels of CO2 will have profound consequences for carbon and carbonate budgets in rhodolith beds and for the sustainability of these habitats.

Keyword(s):

Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Coast and continental shelf; Laboratory experiment; Lithothamnion corallioides; Macroalgae; North Atlantic; Plantae; Primary production/Photosynthesis; Respiration; Rhodophyta; Single species; Temperate; Temperature

Further details:

Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb

Project(s):

European Project on Ocean Acidification (EPOCA)

Ocean Acidification International Coordination Centre (OA-ICC)

Funding:

Seventh Framework Programme (FP7), grant/award no. 211384 : European Project on Ocean Acidification

Coverage:

Latitude: 48.296110 * Longitude: -4.416390

Date/Time Start: 2010-12-15T00:00:00 * Date/Time End: 2010-12-30T00:00:00

Event(s):

Roscanvel * Latitude: 48.296110 * Longitude: -4.416390 * Date/Time Start: 2010-12-15T00:00:00 * Date/Time End: 2010-12-30T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) 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 2014-03-17.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species	Species		Noisette, Fanny
2	Temperature, water	Temp	°C	Noisette, Fanny		treatment
3	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Noisette, Fanny		treatment
4	Aquarium number	Aquarium		Noisette, Fanny
5	Replicates	Repl	#	Noisette, Fanny
6	Irradiance	E	µmol/m²/s	Noisette, Fanny
7	Gross photosynthesis rate, oxygen	PG O2	µmol/g/h	Noisette, Fanny		per dry weight
8	Respiration rate, oxygen	Resp O2	µmol/g/h	Noisette, Fanny		per dry weight
9	Calcification rate of calcium carbonate	Calc rate CaCO3	µmol/g/h	Noisette, Fanny	Alkalinity anomaly technique (Smith and Key, 1975)	per dry weight
10	Calcification rate of calcium carbonate	Calc rate CaCO3	µmol/g/day	Noisette, Fanny	Calculated	per dry weight
11	Chlorophyll a	Chl a	µg/g	Noisette, Fanny		per fresh wight
12	Carotene	Carotene	µg/g	Noisette, Fanny		per fresh wight
13	Zeaxanthin	Zea	µg/g	Noisette, Fanny		per fresh wight
14	Salinity	Sal		Noisette, Fanny
15	Salinity, standard error	Sal std e	±	Noisette, Fanny
16	Temperature, water	Temp	°C	Noisette, Fanny
17	Temperature, water, standard error	T std e	±	Noisette, Fanny
18	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Noisette, Fanny
19	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error	pCO2water_SST_wet std e	±	Noisette, Fanny
20	pH	pH		Noisette, Fanny	Potentiometric	total scale
21	pH, standard error	pH std e	±	Noisette, Fanny	Potentiometric	total scale
22	Alkalinity, total	AT	µmol/kg	Noisette, Fanny
23	Alkalinity, total, standard error	AT std e	±	Noisette, Fanny
24	Carbon, inorganic, dissolved	DIC	µmol/kg	Noisette, Fanny	Calculated using CO2SYS
25	Carbon, inorganic, dissolved, standard error	DIC std e	±	Noisette, Fanny	Calculated using CO2SYS
26	Aragonite saturation state	Omega Arg		Noisette, Fanny	Calculated using CO2SYS
27	Aragonite saturation state, standard error	Omega Arg std e	±	Noisette, Fanny	Calculated using CO2SYS
28	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
29	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
30	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)
31	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)
32	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
33	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	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:

5796 data points

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