Citation:

erx164

Name: Seawater carbonate chemistry and photoinhibition in Desmarestia anceps
Published: 2017
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Desmarestia anceps; Growth/Morphology; Laboratory experiment; Laboratory strains; Light; Macroalgae; Not applicable; Ochrophyta; Other metabolic rates; Primary production/Photosynthesis; Respiration; Single species; Temperature

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Abstract:

Ocean acidification and warming are affecting polar regions with particular intensity. Rocky shores of the Antarctic Peninsula are dominated by canopy-forming Desmarestiales. This study investigates the physiological and transcriptomic responses of the endemic macroalga Desmarestia anceps to a combination of different levels of temperature (2 and 7 °C), dissolved CO2 (380 and 1000 ppm), and irradiance (65 and 145 µmol photons/m**2/s). Growth and photosynthesis increased at high CO2 conditions, and strongly decreased at 2 °C plus high irradiance, in comparison to the other treatments. Photoinhibition at 2 °C plus high irradiance was evidenced by the photochemical performance and intensive release of dissolved organic carbon. The highest number of differentially regulated transcripts was observed in thalli exposed to 2 °C plus high irradiance. Algal 13C isotopic discrimination values suggested an absence of down-regulation of carbon-concentrating mechanisms at high CO2. CO2 enrichment induced few transcriptomic changes. There was high and constitutive gene expression of many photochemical and inorganic carbon utilization components, which might be related to the strong adaptation of D. anceps to the Antarctic environment. These results suggest that increased temperature and CO2 will allow D. anceps to maintain its productivity while tolerating higher irradiances than at present conditions.

Keyword(s):

Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Desmarestia anceps; Growth/Morphology; Laboratory experiment; Laboratory strains; Light; Macroalgae; Not applicable; Ochrophyta; Other metabolic rates; Primary production/Photosynthesis; Respiration; Single species; 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)

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 by seacarb is 2018-03-22.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Iñiguez, Concepcion		study
2	Species	Species		Iñiguez, Concepcion
3	Registration number of species	Reg spec no		Iñiguez, Concepcion
4	Uniform resource locator/link to reference	URL ref		Iñiguez, Concepcion		WoRMS Aphia ID
5	Experiment duration	Exp duration	days	Iñiguez, Concepcion
6	Temperature, water	Temp	°C	Iñiguez, Concepcion		treatment
7	Treatment	Treat		Iñiguez, Concepcion		light
8	Treatment	Treat		Iñiguez, Concepcion		pCO2
9	Growth rate	µ	%/day	Iñiguez, Concepcion
10	Growth rate, standard deviation	µ std dev	±	Iñiguez, Concepcion
11	Net photosynthesis rate, oxygen	PN O2	µmol/g/h	Iñiguez, Concepcion
12	Net photosynthesis rate, standard deviation	PN std dev	±	Iñiguez, Concepcion
13	Respiration rate, oxygen	Resp O2	µmol/g/h	Iñiguez, Concepcion
14	Respiration rate, oxygen, standard deviation	Resp O2 std dev	±	Iñiguez, Concepcion
15	Gross photosynthesis rate, oxygen	PG O2	µmol/g/h	Iñiguez, Concepcion
16	Gross photosynthesis rate, standard deviation	PG std dev	±	Iñiguez, Concepcion
17	Dissolved organic carbon release rate	DOC rel	µmol/g/h	Iñiguez, Concepcion
18	Dissolved organic carbon release rate, standard deviation	DOC rel std dev	±	Iñiguez, Concepcion
19	Percentage	Perc	%	Iñiguez, Concepcion		% DOC released from assimilated
20	Percentage, standard deviation	Perc std dev	±	Iñiguez, Concepcion		% DOC released from assimilated
21	Inhibition of net photosynthesis	Inhib NP	%	Iñiguez, Concepcion		DBS inhibition
22	Inhibition of net photosynthesis, standard deviation	Inhib NP std dev	±	Iñiguez, Concepcion		DBS inhibition
23	Inhibition of net photosynthesis	Inhib NP	%	Iñiguez, Concepcion		EZ inhibition
24	Inhibition of net photosynthesis, standard deviation	Inhib NP std dev	±	Iñiguez, Concepcion		EZ inhibition
25	Chlorophyll a	Chl a	µg/g	Iñiguez, Concepcion
26	Chlorophyll a, standard deviation	Chl a std dev	±	Iñiguez, Concepcion
27	Chlorophyll c1+c2	Chl c1+c2	µg/g	Iñiguez, Concepcion
28	Chlorophyll c1+c2, standard deviation	Chl c1+c2 std dev	±	Iñiguez, Concepcion
29	Carotenoids	Carotenoids	µg/g	Iñiguez, Concepcion
30	Carotenoids, standard deviation	Carotenoids std dev	±	Iñiguez, Concepcion
31	Ratio	Ratio		Iñiguez, Concepcion		Accesory pigments/Chl a
32	Ratio, standard deviation	Ratio std dev	±	Iñiguez, Concepcion		Accesory pigments/Chl a
33	Maximal electron transport rate	ETR max	µmol/m²/s	Iñiguez, Concepcion
34	Maximal electron transport rate, standard deviation	ETR max std dev	±	Iñiguez, Concepcion
35	Photosynthetic efficiency	alpha	µmol electrons/µmol quanta	Iñiguez, Concepcion
36	Photosynthetic efficiency, standard deviation	alpha std dev	±	Iñiguez, Concepcion
37	Saturation light intensity	Ek	µmol photons/m²/s	Iñiguez, Concepcion
38	Light saturation, standard deviation	Ek std dev	±	Iñiguez, Concepcion
39	Irradiance	E	µmol/m²/s	Iñiguez, Concepcion		at which chronic photoinhibition begins
40	Irradiance, standard deviation	E std dev	±	Iñiguez, Concepcion		at which chronic photoinhibition begins
41	Maximum photochemical quantum yield of photosystem II	Fv/Fm		Iñiguez, Concepcion
42	Maximum photochemical quantum yield of photosystem II, standard deviation	Fv/Fm std dev	±	Iñiguez, Concepcion
43	Carbon, total	TC	%	Iñiguez, Concepcion
44	Carbon, total, standard deviation	TC std dev	±	Iñiguez, Concepcion
45	Nitrogen, total	TN	%	Iñiguez, Concepcion
46	Nitrogen, total, standard deviation	TN std dev	±	Iñiguez, Concepcion
47	Carbon/Nitrogen ratio	C/N		Iñiguez, Concepcion
48	Carbon/Nitrogen ratio, standard deviation	C/N std dev	±	Iñiguez, Concepcion
49	δ13C	δ13C	‰ PDB	Iñiguez, Concepcion
50	δ13C, standard deviation	δ13C std dev	±	Iñiguez, Concepcion
51	Ratio	Ratio		Iñiguez, Concepcion		fresh mass/dry mass
52	Ratio, standard deviation	Ratio std dev	±	Iñiguez, Concepcion		fresh mass/dry mass
53	Salinity	Sal		Iñiguez, Concepcion
54	Salinity, standard deviation	Sal std dev	±	Iñiguez, Concepcion
55	pH	pH		Iñiguez, Concepcion	Potentiometric	NBS scale
56	pH, standard deviation	pH std dev	±	Iñiguez, Concepcion	Potentiometric	NBS scale
57	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Iñiguez, Concepcion	Calculated using CO2calc
58	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Iñiguez, Concepcion	Calculated using CO2calc
59	Carbon dioxide	CO2	µmol/kg	Iñiguez, Concepcion	Calculated using CO2calc
60	Carbon dioxide, standard deviation	CO2 std dev	±	Iñiguez, Concepcion	Calculated using CO2calc
61	Bicarbonate ion	[HCO3]-	µmol/kg	Iñiguez, Concepcion	Calculated using CO2calc
62	Bicarbonate, standard deviation	[HCO3]- std dev	±	Iñiguez, Concepcion	Calculated using CO2calc
63	Carbonate ion	[CO3]2-	µmol/kg	Iñiguez, Concepcion	Calculated using CO2calc
64	Carbonate ion, standard deviation	[CO3]2- std dev	±	Iñiguez, Concepcion	Calculated using CO2calc
65	Carbon, inorganic, dissolved	DIC	µmol/kg	Iñiguez, Concepcion	Calculated using CO2calc
66	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Iñiguez, Concepcion	Calculated using CO2calc
67	Alkalinity, total	AT	µmol/kg	Iñiguez, Concepcion	Potentiometric titration
68	Alkalinity, total, standard deviation	AT std dev	±	Iñiguez, Concepcion	Potentiometric titration
69	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
70	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
71	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
72	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)
73	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)
74	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
75	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
76	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
77	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
78	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:

624 data points

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