Citation:

peerj.2505

Name: The effect of CO2 enrichment on net photosynthesis of the red alga Furcellaria lumbricalis in a brackish water environment
Published: 2016-12-29
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Baltic Sea; Benthos; Coast and continental shelf; Field experiment; Furcellaria lumbricalis; Light; Macroalgae; Mesocosm or benthocosm; Plantae; Primary production/Photosynthesis; Rhodophyta; Single species; Temperate; Temperature

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Abstract:

Anthropogenic carbon dioxide (CO2) emissions to the atmosphere are causing reduction in the global ocean pH, also known as ocean acidification. This change alters the equilibrium of different forms of dissolved inorganic carbon in seawater that macroalgae use for their photosynthesis. In the Baltic Sea, benthic macroalgae live in a highly variable environment caused by seasonality and rapid changes in meteorological conditions. The effect of increasing water CO2 concentration on the net photosynthesis of the red macroalgae Furcellaria lumbricalis (Hudson) Lamouroux was tested in short-term mesocosm experiments conducted in Kõiguste Bay (N Gulf of Riga) in June-July 2012 and 2013. Separate mesocosms were maintained at different pCO2 levels: ca. 2,000, ca. 1,000 and ca. 200 µatm. In parallel, different environmental factors were measured such as nutrients, light and water temperature. Thus, the current study also investigated whether elevated pCO2 and different environmental factors exerted interactive effects on the photosynthetic rate of F. lumbricalis. In addition, laboratory experiments were carried out to determine the optimal temperature for photosynthesis of F. lumbricalis. The results of our field experiments demonstrated that elevated pCO2 levels may remarkably enhance the photosynthetic rate of F. lumbricalis. However, the magnitude of this effect is altered by different environmental factors, mainly by changes in water temperature.

Keyword(s):

Baltic Sea; Benthos; Coast and continental shelf; Field experiment; Furcellaria lumbricalis; Light; Macroalgae; Mesocosm or benthocosm; Plantae; Primary production/Photosynthesis; Rhodophyta; Single species; Temperate; Temperature

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Proye, Aurélien; Soetaert, Karline; Rae, James (2016): seacarb: seawater carbonate chemistry with R. R package version 3.1. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: 58.371000 * Longitude: 22.980000

Date/Time Start: 2012-06-26T00:00:00 * Date/Time End: 2013-07-27T00:00:00

Event(s):

Koiguste_bay * Latitude: 58.371000 * Longitude: 22.980000 * Date/Time Start: 2012-06-26T00:00:00 * Date/Time End: 2013-07-27T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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 is 2016-12-29.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Pajusalu, Liina		study
2	Species	Species		Pajusalu, Liina
3	Registration number of species	Reg spec no		Pajusalu, Liina
4	Uniform resource locator/link to reference	URL ref		Pajusalu, Liina		WoRMS Aphia ID
5	Net primary production of oxygen	NPP O2	mg/g/h	Pajusalu, Liina
6	Experiment	Exp		Pajusalu, Liina		year
7	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Pajusalu, Liina
8	Incubation duration	Inc dur	days	Pajusalu, Liina
9	Temperature, water	Temp	°C	Pajusalu, Liina
10	Irradiance	E	µmol/m²/s	Pajusalu, Liina
11	Salinity	Sal		Pajusalu, Liina
12	Salinity, standard error	Sal std e	±	Pajusalu, Liina
13	Temperature, water	Temp	°C	Pajusalu, Liina		mean
14	Temperature, water, standard error	T std e	±	Pajusalu, Liina
15	pH	pH		Pajusalu, Liina		NBS scale
16	pH, standard error	pH std e	±	Pajusalu, Liina		NBS scale
17	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Pajusalu, Liina
18	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error	pCO2water_SST_wet std e	±	Pajusalu, Liina
19	Carbon, inorganic, dissolved	DIC	µmol/kg	Pajusalu, Liina	Calculated using CO2SYS
20	Alkalinity, total	AT	µmol/kg	Pajusalu, Liina	Calculated using CO2SYS
21	Carbonate ion	[CO3]2-	µmol/kg	Pajusalu, Liina	Calculated using CO2SYS
22	Bicarbonate ion	[HCO3]-	µmol/kg	Pajusalu, Liina	Calculated using CO2SYS
23	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
24	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
25	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
26	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)
27	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)
28	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
29	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
30	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
31	Alkalinity, total	AT	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
32	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
33	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:

5940 data points

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