Citation:

PANGAEA.924724

Name: Seawater carbonate chemistry and growth and photosynthetic performances of a green tide alga Ulva linza
Published: 2018
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Benthos; Bottles or small containers/Aquaria (<20 L); Chlorophyta; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Macroalgae; Macro-nutrients; North Pacific; Other metabolic rates; Plantae; Primary production/Photosynthesis; Respiration; Single species; Temperate; Ulva linza

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Abstract:

Large-scale green tides have been invading the coastal zones of the western Yellow Sea annually since 2008. Meanwhile, oceans are becoming more acidic due to continuous absorption of anthropogenic carbon dioxide, and intensive seaweed cultivation in Chinese coastal areas is leading to severe regional nutrient limitation. However, little is known about the combined effects of global and local stressors on the eco-physiology of bloom-forming algae. We cultured Ulva linza for 9–16 days under two levels of pCO2 (400 and 1000 µatm) and four treatments of nutrients (nutrient repletion, N limitation, P limitation, and N–P limitation) to investigate the physiological responses of this green tide alga to the combination of ocean acidification and nutrient limitation. For both sporelings and adult plants, elevated pCO2 did not affect the growth rate when cultured under nutrient-replete conditions but reduced it under P limitation; N or P limitations by themselves reduced growth rate. P limitation resulted in a larger inhibition in growth for sporelings compared to adult plants. Sporelings under P limitation did not reach the mature stage after 16 days of culture while those under P repletion became mature by day 11. Elevated pCO2 reduced net photosynthetic rate for all nutrient treatments but increased nitrate reductase activity and soluble protein content under P-replete conditions. N or P limitation reduced nitrate reductase activity and soluble protein content. These findings indicate that ocean acidification and nutrient limitation would synergistically reduce the growth of Ulva species and may thus hinder the occurrence of green tides in a future ocean environment.

Keyword(s):

Benthos; Bottles or small containers/Aquaria (<20 L); Chlorophyta; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Macroalgae; Macro-nutrients; North Pacific; Other metabolic rates; Plantae; Primary production/Photosynthesis; Respiration; Single species; Temperate; Ulva linza

Supplement to:

Gao, Guang; Beardall, John; Bao, Menglin; Wang, Can; Ren, Wangwang; Xu, Juntian (2018): Ocean acidification and nutrient limitation synergistically reduce growth and photosynthetic performances of a green tide alga Ulva linza. Biogeosciences, 15(11), 3409-3420, https://doi.org/10.5194/bg-15-3409-2018

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2020): seacarb: seawater carbonate chemistry with R. R package version 3.2.14. https://CRAN.R-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: 34.500000 * Longitude: 119.300000

Date/Time Start: 2009-07-01T00:00:00 * Date/Time End: 2009-07-30T00:00:00

Event(s):

Lianyungang_OA * Latitude: 34.500000 * Longitude: 119.300000 * Date/Time Start: 2009-07-01T00:00:00 * Date/Time End: 2009-07-30T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2020) 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 2020-11-11.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Xu, Juntian		study
2	Species	Species		Xu, Juntian
3	Registration number of species	Reg spec no		Xu, Juntian
4	Uniform resource locator/link to reference	URL ref		Xu, Juntian		WoRMS Aphia ID
5	Treatment	Treat		Xu, Juntian
6	Day of experiment	DOE	day	Xu, Juntian
7	Length	l	µm	Xu, Juntian		Young
8	Length, standard deviation	l std dev	±	Xu, Juntian		Young
9	Length	l	cm	Xu, Juntian		Adult
10	Length, standard deviation	l std dev	±	Xu, Juntian		Adult
11	Growth rate	µ	%/day	Xu, Juntian		Young
12	Growth rate, standard deviation	µ std dev	±	Xu, Juntian		Young
13	Growth rate	µ	%/day	Xu, Juntian		Adult
14	Growth rate, standard deviation	µ std dev	±	Xu, Juntian		Adult
15	Net photosynthesis rate, oxygen	PN O2	µmol/g/h	Xu, Juntian		per fresh mass
16	Net photosynthesis rate, standard deviation	PN std dev	±	Xu, Juntian		per fresh mass
17	Respiration rate, oxygen, dark	Resp O2 d	µmol/g/h	Xu, Juntian		per fresh mass
18	Respiration rate, oxygen, standard deviation	Resp O2 std dev	±	Xu, Juntian		per fresh mass
19	Electron transport rate, relative	rETR	µmol e/m²/s	Xu, Juntian
20	Electron transport rate, relative, standard deviation	rETR std dev	±	Xu, Juntian
21	Chlorophyll a	Chl a	µg/mg	Xu, Juntian		per fresh mass
22	Chlorophyll a, standard deviation	Chl a std dev	±	Xu, Juntian		per fresh mass
23	Chlorophyll b	Chl b	µg/g	Xu, Juntian		per fresh mass
24	Chlorophyll b, standard deviation	Chl b std dev	±	Xu, Juntian		per fresh mass
25	Nitrate reductase activity	NO3 reduct act	µmol/g/h	Xu, Juntian		per fresh mass
26	Nitrate reductase activity, standard deviation	NO3 reduct act std dev	±	Xu, Juntian		per fresh mass
27	Proteins, soluble	Protein sol	mg/g	Xu, Juntian		per fresh mass
28	Proteins, standard deviation	Protein std dev	±	Xu, Juntian		per fresh mass
29	Temperature, water	Temp	°C	Xu, Juntian
30	Salinity	Sal		Xu, Juntian
31	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Xu, Juntian
32	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Xu, Juntian
33	pH	pH		Xu, Juntian		NBS scale
34	pH, standard deviation	pH std dev	±	Xu, Juntian		NBS scale
35	Carbon, inorganic, dissolved	DIC	µmol/kg	Xu, Juntian
36	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Xu, Juntian
37	Carbon dioxide	CO2	µmol/kg	Xu, Juntian
38	Carbon dioxide, standard deviation	CO2 std dev	±	Xu, Juntian
39	Bicarbonate ion	[HCO3]-	µmol/kg	Xu, Juntian
40	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Xu, Juntian
41	Carbonate ion	[CO3]2-	µmol/kg	Xu, Juntian
42	Carbonate ion, standard deviation	[CO3]2- std dev	±	Xu, Juntian
43	Alkalinity, total	AT	µmol/kg	Xu, Juntian
44	Alkalinity, total, standard deviation	AT std dev	±	Xu, Juntian
45	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
46	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
47	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
48	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)
49	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
50	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
51	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
52	Alkalinity, total	AT	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
53	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
54	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:

4200 data points

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