Citation:

s41598-017-07195-8

Name: Seawater carbonate chemistry and phytoplankton stoichiometry, production and community structure in eutrophic coastal waters
Published: 2017
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Biomass/Abundance/Elemental composition; Calcification/Dissolution; Coast and continental shelf; Entire community; Field experiment; Mesocosm or benthocosm; North Pacific; North Pacific; Pelagos; Primary production/Photosynthesis; Temperate

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Abstract:

There is a growing consensus that the ongoing increase in atmospheric CO2 level will lead to a variety of effects on marine phytoplankton and ecosystems. However, the effects of CO2 enrichment on eutrophic coastal waters are still unclear, as are the complex mechanisms coupled to the development of eutrophication. Here, we report the first mesocosm CO2 perturbation study in a eutrophic subtropical bay during summer by investigating the effect of rising CO2 on a model artificial community consisting of well-characterized cultured diatoms (Phaeodactylum tricornutum and Thalassiosira weissflogii) and prymnesiophytes (Emiliania huxleyi and Gephyrocapsa oceanica). These species were inoculated into triplicate 4 m**3 enclosures with equivalent chlorophyll a (Chl-a) under present and higher partial pressures of atmospheric CO2 (pCO2 = 400 and 1000 ppmv). Diatom bloom events were observed in all enclosures, with enhanced organic carbon production and Chl-a concentrations under high CO2 treatments. Relative to the low CO2 treatments, the consumption of the dissolved inorganic nitrogen and uptake ratios of N/P and N/Si increased significantly during the bloom. These observed responses suggest more extensive and complex effects of higher CO2 concentrations on phytoplankton communities in coastal eutrophic environments.

Keyword(s):

Biomass/Abundance/Elemental composition; Calcification/Dissolution; Coast and continental shelf; Entire community; Field experiment; Mesocosm or benthocosm; North Pacific; North Pacific; Pelagos; Primary production/Photosynthesis; Temperate

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: 24.520000 * Longitude: 118.200000

Date/Time Start: 2013-06-15T00:00:00 * Date/Time End: 2013-06-15T00:00:00

Event(s):

Wuyuan_Bay * Latitude: 24.520000 * Longitude: 118.200000 * Date/Time: 2013-06-15T00:00:00 * 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 by seacarb is 2018-04-11.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Liu, Xin		study
2	Treatment	Treat		Liu, Xin
3	Time in days	Time	days	Liu, Xin
4	Fucoxanthin	Fuco	µg/l	Liu, Xin
5	Fucoxanthin, standard deviation	Fuco std dev	±	Liu, Xin
6	19-Hexanoyloxyfucoxanthin	Hex-fuco	µg/l	Liu, Xin
7	19-Hexanoyloxyfucoxanthin, standard deviation	Hex-fuco std dev	±	Liu, Xin
8	Chlorophyll a	Chl a	µg/l	Liu, Xin
9	Chlorophyll a, standard deviation	Chl a std dev	±	Liu, Xin
10	Fucoxanthin/chlorophyll a ratio	Fuco/Chl a		Liu, Xin
11	Fucoxanthin/chlorophyll a ratio, standard devitation	Fuco/Chl a std dev	±	Liu, Xin
12	19-Hexanoyloxyfucoxanthin/chlorophyll a	Hex-fuco/Chl a		Liu, Xin
13	19-Hexanoyloxyfucoxanthin/chlorophyll a, standard deviation	Hex-fuco/Chl a std dev	±	Liu, Xin
14	Ratio	Ratio		Liu, Xin		Delta DIN/Delta SRP
15	Ratio, standard deviation	Ratio std dev	±	Liu, Xin		Delta DIN/Delta SRP
16	Ratio	Ratio		Liu, Xin		Delta DIN/Delta [SiO3]2-
17	Ratio, standard deviation	Ratio std dev	±	Liu, Xin		Delta DIN/Delta [SiO3]2-
18	Nitrogen/Phosphorus ratio	N/P		Liu, Xin
19	Nitrogen/Phosphorus ratio, standard deviation	N/P std dev	±	Liu, Xin
20	Nitrogen/Silicon ratio	N/Si		Liu, Xin
21	Nitrogen/Silicon ratio, standard deviation	N/Si std dev	±	Liu, Xin
22	Phosphate	[PO4]3-	µmol/l	Liu, Xin
23	Phosphate, standard deviation	[PO4]3- std dev	±	Liu, Xin
24	Silicate	Si(OH)4	µmol/l	Liu, Xin
25	Alkalinity, total, standard deviation	AT std dev	±	Liu, Xin
26	Nitrate and Nitrite	[NO3]- + [NO2]-	µmol/l	Liu, Xin
27	Nitrate and Nitrite, standard deviation	[NO3]- + [NO2]- std dev	±	Liu, Xin
28	Ammonium	[NH4]+	µmol/l	Liu, Xin
29	Ammonium, standard deviation	[NH4]+ std dev	±	Liu, Xin
30	Nitrogen, inorganic, dissolved	DIN	µmol/l	Liu, Xin
31	Nitrogen, inorganic, dissolved, standard deviation	DIN std dev	±	Liu, Xin
32	Temperature, water	Temp	°C	Liu, Xin
33	Temperature, water, standard deviation	Temp std dev	±	Liu, Xin
34	Salinity	Sal		Liu, Xin
35	Salinity, standard deviation	Sal std dev	±	Liu, Xin
36	Carbon, inorganic, dissolved	DIC	µmol/kg	Liu, Xin
37	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Liu, Xin
38	Alkalinity, total	AT	µmol/kg	Liu, Xin
39	Alkalinity, total, standard deviation	AT std dev	±	Liu, Xin
40	pH	pH		Liu, Xin		total scale
41	pH, standard deviation	pH std dev	±	Liu, Xin		total scale
42	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Liu, Xin
43	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Liu, Xin
44	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
45	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
46	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
47	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)
48	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)
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	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
52	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
53	Identification	ID		Liu, Xin		enclosures
54	Calcification rate of calcium carbonate	Calc rate CaCO3	µmol/g/day	Liu, Xin
55	Particulate organic carbon production	POC prod	µmol/l/day	Liu, Xin
56	Production of Carbon, organic, dissolved	DOC prod	µmol/l/day	Liu, Xin
57	Particulate inorganic carbon/particulate organic carbon ratio	PIC/POC		Liu, Xin

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1150 data points

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