Citation:

PANGAEA.995819

Name: Seawater carbonate chemistry and response of seasonal marine microbial communities (phytoplankton, bacteria) and viruses from the Santa Barbara Channel to OAE
Published: 2026-07-06
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Biomass/Abundance/Elemental composition; Coast and continental shelf; Community composition and diversity; Containers and aquaria (20-1000 L or < 1 m**2); Entire community; Laboratory experiment; North Pacific; Ocean alkalinity enhancement; Pelagos; Temperate

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Published: 2026-07-06 • DOI registered: 2026-08-04

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Abstract:

Here, we used outdoor microcosm exper- iments to investigate the effec t s of abrupt limestone-inspired and NaOH alkalinity additions of ∼750 μmol/kg, reflecting model-predicted ocean alkalinity enhancement (OAE) scenarios that produce severe localized impacts (e.g. large variations in pH and Omega). We assess the response of seasonal marine microbial communities (phytoplankton, bacteria) and viruses from the Santa Barbara Channel, analyzed by high-throughput amplicon sequencing and flow cytometry.

This dataset is included in the OA-ICC data compilation maintained in the framework of the IAEA Ocean Acidification International Coordination Centre (see https://oa-icc.ipsl.fr). Original data were downloaded from Dryad Digital Repository (see Source) by the OA-ICC data curator. In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) 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 2026-07-03.

Keyword(s):

Biomass/Abundance/Elemental composition; Coast and continental shelf; Community composition and diversity; Containers and aquaria (20-1000 L or < 1 m**2); Entire community; Laboratory experiment; North Pacific; Ocean alkalinity enhancement; Pelagos; Temperate

Related to:

Gately, James A; Kim, Sylvia M; Welch, Zoe S; Martínez, Joaquín Martínez; Catlett, Dylan; Jin, Benjamin; Manzagol, Madeline; Larson, Angela; Brzezinski, Mark A; Iglesias-Rodriguez, Maria D (2026): Abrupt alkalinization alters microbial diversity and promotes the proliferation of marine parasites in coastal microcosm experiments. ICES Journal of Marine Science, 83(5), fsag063, https://doi.org/10.1093/icesjms/fsag063

Source:

Gately, James A; Kim, Sylvia M; Welch, Zoe S; Martínez Martínez, Joaquín; Catlett, Dylan; Jin, Benjamin; Manzagol, Madeline; Larson, Angela; Brzezinski, Mark A; Iglesias-Rodriguez, Maria D (2026): Data from: Abrupt alkalinization alters microbial diversity and promotes the proliferation of marine parasites in coastal microcosm experiments [dataset]. Dryad, https://doi.org/10.5061/DRYAD.73N5TB381

References:

Nisumaa, Anne-Marin; Pesant, Stephane; Bellerby, Richard G J; Delille, Bruno; Middelburg, Jack J; Orr, James C; Riebesell, Ulf; Tyrrell, Toby; Wolf-Gladrow, Dieter A; Gattuso, Jean-Pierre (2010): EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification. Earth System Science Data, 2(2), 167-175, https://doi.org/10.5194/essd-2-167-2010

Yang, Yan; Brockmann, Patrick; Galdino, Carolina; Schindler, Uwe; Gazeau, Frédéric (2024): An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal. Earth System Science Data, 16(8), 3771-3780, https://doi.org/10.5194/essd-16-3771-2024

Yang, Yan; Hansson, L; Gattuso, Jean-Pierre (2016): Data compilation on the biological response to ocean acidification: an update. Earth System Science Data, 8(1), 79-87, https://doi.org/10.5194/essd-8-79-2016

Related code / software:

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 (2024): seacarb: seawater carbonate chemistry with R. R package version 3.3.3. https://cran.r-project.org/web/packages/seacarb/index.html

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Type of study	Study type		Gately, James A
2	Sampling date	Sampling date		Gately, James A
3	File name	File name		Gately, James A		FCM file
4	Number	No		Gately, James A		tube
5	Sample code/label	Sample label		Gately, James A
6	Treatment	Treat		Gately, James A
7	Cryptophytes	Cryptophytes	#/ml	Gately, James A
8	Nanoeukaryotes	NEuk	#/ml	Gately, James A		1
9	Nanoeukaryotes	NEuk	#/ml	Gately, James A		2
10	Picoeukaryotes	PEuk	#/ml	Gately, James A		1
11	Picoeukaryotes	PEuk	#/ml	Gately, James A		2
12	Synechococcus	Synechococcus	#/ml	Gately, James A
13	Bacteria	Bact	#/ml	Gately, James A		1
14	Bacteria	Bact	#/ml	Gately, James A		2
15	Virion-like particles	VLP	#/ml	Gately, James A		VLP1
16	Virion-like particles	VLP	#/ml	Gately, James A		VLP2
17	Virion-like particles	VLP	#/ml	Gately, James A		VLP3
18	Virion-like particles	VLP	#/ml	Gately, James A		VLP4
19	Number	No		Gately, James A		dir_carboy
20	Alkalinity, total	AT	µEq/kg	Gately, James A		intended total alkalinity (TA) increase
21	Volume	Vol	ml	Gately, James A		1 M CaCl2*2H2O stock solution added to seawater
22	Volume	Vol	ml	Gately, James A		1 M Na2CO3 stock solution added to seawater
23	Volume	Vol	ml	Gately, James A		1 M NaOH stock solution added to seawater
24	Temperature, water	Temp	°C	Gately, James A		Incubation
25	Temperature, water, standard deviation	Temp std dev	±	Gately, James A		Incubation
26	pH, total scale	pHT		Gately, James A	Spectrophotometric
27	pH, standard deviation	pH std dev	±	Gately, James A	Spectrophotometric	total scale
28	Temperature, water	Temp	°C	Gately, James A		during pH measurement
29	Temperature, water, standard deviation	Temp std dev	±	Gately, James A		during pH measurement
30	Salinity	Sal		Gately, James A
31	Alkalinity, total	AT	µmol/kg	Gately, James A		before correction for HgCl2
32	Alkalinity, total	AT	µmol/kg	Gately, James A		after correction for HgCl2
33	Carbon, inorganic, dissolved	DIC	µmol/kg	Gately, James A
34	pH, total scale	pHT		Gately, James A	Calculated using CO2SYS	at incubation temperature
35	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Gately, James A	Calculated using CO2SYS
36	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Gately, James A	Calculated using CO2SYS
37	Bicarbonate ion	[HCO3]-	µmol/kg	Gately, James A	Calculated using CO2SYS
38	Carbonate ion	[CO3]2-	µmol/kg	Gately, James A	Calculated using CO2SYS
39	Carbon dioxide	CO2	µmol/kg	Gately, James A	Calculated using CO2SYS
40	Calcite saturation state	Omega Cal		Gately, James A	Calculated using CO2SYS
41	Aragonite saturation state	Omega Arg		Gately, James A	Calculated using CO2SYS
42	Revelle factor	R		Gately, James A	Calculated using CO2SYS
43	Carbon, inorganic, particulate	PIC	µmol/l	Gately, James A
44	Phosphate	[PO4]3-	µmol/l	Gately, James A
45	Phosphate	[PO4]3-	µmol/l	Gately, James A		values that were below MDL were set to MDL
46	Phosphate	[PO4]3-	µmol/kg	Gately, James A
47	Nitrate and Nitrite	[NO3]- + [NO2]-	µmol/l	Gately, James A
48	Nitrate and Nitrite	[NO3]- + [NO2]-	µmol/l	Gately, James A		values that were below MDL were set to MDL
49	Ammonia	NH3	µmol/l	Gately, James A
50	Ammonia	NH3	µmol/l	Gately, James A		values that were below MDL were set to MDL
51	Nitrogen, inorganic, dissolved	DIN	µmol/l	Gately, James A
52	Silicate	Si(OH)4	µmol/l	Gately, James A
53	Silicate	Si(OH)4	µmol/l	Gately, James A		values that were below MDL were set to MDL
54	Silicate	Si(OH)4	µmol/kg	Gately, James A
55	Biogenic silica	bSiO2	µmol/l	Gately, James A
56	Biogenic silica	bSiO2	µmol/l	Gately, James A		values that were below MDL were set to MDL
57	Carbon, organic, particulate	POC	µg/l	Gately, James A
58	Nitrogen, organic, particulate	PON	µg/l	Gately, James A
59	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
60	pH, total scale	pHT		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
61	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
62	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)
63	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)
64	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
65	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
66	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
67	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
68	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:

31838 data points

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