Citation:

bg-13-6247-2016

Name: Physiological responses of coastal and oceanic diatoms to diurnal fluctuations in seawater carbonate chemistry under two CO2 concentrations
Published: 2016-11-24
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Growth/Morphology; Laboratory experiment; Laboratory strains; North Atlantic; Ochrophyta; Other; Pelagos; Phytoplankton; Primary production/Photosynthesis; Respiration; Single species; Thalassiosira oceanica; Thalassiosira weissflogii

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Abstract:

Diel and seasonal fluctuations in seawater carbonate chemistry are common in coastal waters, while in the open-ocean carbonate chemistry is much less variable. In both of these environments, ongoing ocean acidification is being superimposed on the natural dynamics of the carbonate buffer system to influence the physiology of phytoplankton. Here, we show that a coastal Thalassiosira weissflogii isolate and an oceanic diatom, Thalassiosira oceanica, respond differentially to diurnal fluctuating carbonate chemistry in current and ocean acidification (OA) scenarios. A fluctuating carbonate chemistry regime showed positive or negligible effects on physiological performance of the coastal species. In contrast, the oceanic species was significantly negatively affected. The fluctuating regime reduced photosynthetic oxygen evolution rates and enhanced dark respiration rates of T. oceanica under ambient CO2 concentration, while in the OA scenario the fluctuating regime depressed its growth rate, chlorophyll a content, and elemental production rates. These contrasting physiological performances of coastal and oceanic diatoms indicate that they differ in the ability to cope with dynamic pCO2. We propose that, in addition to the ability to cope with light, nutrient, and predation pressure, the ability to acclimate to dynamic carbonate chemistry may act as one determinant of the spatial distribution of diatom species. Habitat-relevant diurnal changes in seawater carbonate chemistry can interact with OA to differentially affect diatoms in coastal and pelagic waters.

Keyword(s):

Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Chromista; Growth/Morphology; Laboratory experiment; Laboratory strains; North Atlantic; Ochrophyta; Other; Pelagos; Phytoplankton; Primary production/Photosynthesis; Respiration; Single species; Thalassiosira oceanica; Thalassiosira weissflogii

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 is 2016-11-24.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type	Type		Gao, Kunshan		study
2	Species	Species		Gao, Kunshan
3	Registration number of species	Reg spec no		Gao, Kunshan
4	Uniform resource locator/link to reference	URL ref		Gao, Kunshan		WoRMS Aphia ID
5	Figure	Fig		Gao, Kunshan
6	Table	Tab		Gao, Kunshan
7	Time in hours	Time	h	Gao, Kunshan		after the onset of light
8	Treatment	Treat		Gao, Kunshan
9	pH	pH		Gao, Kunshan		NBS scale
10	pH, standard deviation	pH std dev	±	Gao, Kunshan		NBS scale
11	Growth rate	µ	1/day	Gao, Kunshan
12	Growth rate, standard deviation	µ std dev	±	Gao, Kunshan
13	Chlorophyll a production per cell	Chl a prod/cell	pg/#/day	Gao, Kunshan
14	Chlorophyll a, production, standard deviation	Chl a prod	±	Gao, Kunshan
15	Particulate organic carbon production per cell	POC prod/cell	pmol/#/day	Gao, Kunshan
16	Particulate organic carbon, production, standard deviation	POC prod std dev	±	Gao, Kunshan
17	Production of particulate organic nitrogen	PON prod	pmol/#/day	Gao, Kunshan
18	Particulate organic nitrogen production, standard deviation	PON prod std dev	±	Gao, Kunshan
19	Biogenic silica production per cell	bSiO2 prod/cell	fmol/#/day	Gao, Kunshan
20	Biogenic silica production, standard deviation	bSiO2 prod std dev	±	Gao, Kunshan
21	Net photosynthesis rate, oxygen, per chlorophyll a	PN O2/Chl a	µmol/µg/h	Gao, Kunshan
22	Net photosynthesis rate, standard deviation	PN std dev	±	Gao, Kunshan		Chlorophyll a-normalized
23	Net photosynthesis rate, oxygen, per cell	PN O2/cell	fmol/#/h	Gao, Kunshan
24	Net photosynthesis rate, standard deviation	PN std dev	±	Gao, Kunshan		Cell-based
25	Respiration rate, oxygen, per cell	Resp O2/cell	fmol/#/h	Gao, Kunshan
26	Respiration rate, oxygen, standard deviation	Resp O2 std dev	±	Gao, Kunshan
27	Cell size	Cell size	µm	Gao, Kunshan
28	Cell size, standard deviation	Cell size std dev	±	Gao, Kunshan
29	Chlorophyll a per cell	Chl a/cell	pg/#	Gao, Kunshan
30	Chlorophyll a, standard deviation	Chl a std dev	±	Gao, Kunshan
31	Particulate organic carbon, per cell	POC/cell	pmol/#	Gao, Kunshan
32	Particulate organic carbon content per cell, standard deviation	POC cont/cell std dev	±	Gao, Kunshan
33	Particulate organic nitrogen per cell	PON/cell	pmol/#	Gao, Kunshan
34	Particulate organic nitrogen, standard deviation	PON std dev	±	Gao, Kunshan
35	Biogenic silica, per cell	bSiO2/cell	fmol/#	Gao, Kunshan
36	Biogenic silica, standard deviation	bSiO2 std dev	±	Gao, Kunshan
37	Carbon, organic, particulate/Nitrogen, organic, particulate ratio	POC/PON		Gao, Kunshan
38	Carbon, organic, particulate/Nitrogen, organic, particulate ratio, standard deviation	POC/PON std dev	±	Gao, Kunshan
39	Biogenic particulate silica/Carbon, organic, particulate	bPSi/POC		Gao, Kunshan
40	Biogenic particulate silica/Carbon, organic, particulate, standard deviation	bPSi/POC std dev	±	Gao, Kunshan
41	Respiration/net photosynthesis ratio	R/P		Gao, Kunshan
42	Respiration/net photosynthesis ratio, standard deviation	R/P std dev	±	Gao, Kunshan
43	Effective photochemical quantum yield	phi PS II		Gao, Kunshan
44	Effective photochemical quantum yield, standard deviation	phi PS II std dev	±	Gao, Kunshan
45	Non photochemical quenching	NPQ		Gao, Kunshan
46	Non photochemical quenching, standard deviation	NPQ std dev	±	Gao, Kunshan
47	Temperature, water	Temp	°C	Gao, Kunshan
48	Salinity	Sal		Gao, Kunshan
49	pH	pH		Gao, Kunshan	Potentiometric	After dilution, NBS scale
50	pH, standard deviation	pH std dev	±	Gao, Kunshan	Potentiometric	After dilution, NBS scale
51	Alkalinity, total	AT	µmol/kg	Gao, Kunshan	Potentiometric titration	After dilution
52	Alkalinity, total, standard deviation	AT std dev	±	Gao, Kunshan	Potentiometric titration	After dilution
53	Carbon, inorganic, dissolved	DIC	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	After dilution
54	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Gao, Kunshan	Calculated using CO2SYS	After dilution
55	Bicarbonate ion	[HCO3]-	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	After dilution
56	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Gao, Kunshan	Calculated using CO2SYS	After dilution
57	Carbonate ion	[CO3]2-	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	After dilution
58	Carbonate ion, standard deviation	[CO3]2- std dev	±	Gao, Kunshan	Calculated using CO2SYS	After dilution
59	Carbon dioxide	CO2	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	After dilution
60	Carbon dioxide, standard deviation	CO2 std dev	±	Gao, Kunshan	Calculated using CO2SYS	After dilution
61	pH	pH		Gao, Kunshan	Potentiometric	Before dilution, NBS scale
62	pH, standard deviation	pH std dev	±	Gao, Kunshan	Potentiometric	Before dilution, NBS scale
63	Alkalinity, total	AT	µmol/kg	Gao, Kunshan	Potentiometric titration	Before dilution
64	Alkalinity, total, standard deviation	AT std dev	±	Gao, Kunshan	Potentiometric titration	Before dilution
65	Carbon, inorganic, dissolved	DIC	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	Before dilution
66	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Gao, Kunshan	Calculated using CO2SYS	Before dilution
67	Bicarbonate ion	[HCO3]-	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	Before dilution
68	Bicarbonate ion, standard deviation	[HCO3]- std dev	±	Gao, Kunshan	Calculated using CO2SYS	Before dilution
69	Carbonate ion	[CO3]2-	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	Before dilution
70	Carbonate ion, standard deviation	[CO3]2- std dev	±	Gao, Kunshan	Calculated using CO2SYS	Before dilution
71	Carbon dioxide	CO2	µmol/kg	Gao, Kunshan	Calculated using CO2SYS	Before dilution
72	Carbon dioxide, standard deviation	CO2 std dev	±	Gao, Kunshan	Calculated using CO2SYS	Before dilution
73	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
74	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	After dilution, total scale
75	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	After dilution
76	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)	After dilution
77	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)	After dilution
78	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	After dilution
79	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	After dilution
80	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	After dilution
81	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	After dilution
82	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	After dilution
83	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	Before dilution, total scale
84	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	Before dilution
85	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)	Before dilution
86	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)	Before dilution
87	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	Before dilution
88	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	Before dilution
89	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	Before dilution
90	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	Before dilution
91	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	Before dilution

License:

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

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1944 data points

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