Citation:

es403351h

Name: Direct linkage between dimethyl sulfide production and microzooplankton grazing, resulting from prey composition change under high partial pressure of carbon dioxide conditions
Published: 2014-07-16
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Alexandrium sp.; Behaviour; Cerataulina pelagica; Coast and continental shelf; Community composition and diversity; Entire community; Field experiment; Mesocosm or benthocosm; North Pacific; Other metabolic rates; Pelagos; Primary production/Photosynthesis; Temperate; Temperature

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Abstract:

Oceanic dimethyl sulfide (DMS) is the enzymatic cleavage product of the algal metabolite dimethylsulfoniopropionate (DMSP) and is the most abundant form of sulfur released into the atmosphere. To investigate the effects of two emerging environmental threats (ocean acidification and warming) on marine DMS production, we performed a large-scale perturbation experiment in a coastal environment. At both ambient temperature and 2 °C warmer, an increase in partial pressure of carbon dioxide (pCO2) in seawater (160-830 ppmv pCO2) favored the growth of large diatoms, which outcompeted other phytoplankton species in a natural phytoplankton assemblage and reduced the growth rate of smaller, DMSP-rich phototrophic dinoflagellates. This decreased the grazing rate of heterotrophic dinoflagellates (ubiquitous micrograzers), resulting in reduced DMS production via grazing activity. Both the magnitude and sign of the effect of pCO2 on possible future oceanic DMS production were strongly linked to pCO2-induced alterations to the phytoplankton community and the cellular DMSP content of the dominant species and its association with micrograzers.

Keyword(s):

Alexandrium sp.; Behaviour; Cerataulina pelagica; Coast and continental shelf; Community composition and diversity; Entire community; Field experiment; Mesocosm or benthocosm; North Pacific; Other metabolic rates; Pelagos; Primary production/Photosynthesis; Temperate; Temperature

Further details:

Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: 34.600000 * Longitude: 128.500000

Date/Time Start: 2012-05-02T00:00:00 * Date/Time End: 2012-05-20T00:00:00

Event(s):

Jangmok * Latitude: 34.600000 * Longitude: 128.500000 * Date/Time Start: 2012-05-02T00:00:00 * Date/Time End: 2012-05-20T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 2014-07-15.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Date	Date		Park, K T
2	Incubation duration	Inc dur	days	Park, K T
3	Identification	ID		Park, K T
4	Treatment	Treat		Park, K T
5	Salinity	Sal		Park, K T
6	Temperature, water	Temp	°C	Park, K T
7	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	ppmv	Park, K T	Calculated
8	pH	pH		Park, K T	Calculated	total scale
9	Alkalinity, total	AT	µmol/kg	Park, K T
10	Carbon, inorganic, dissolved	DIC	µmol/kg	Park, K T
11	Dimethyl sulfide	DMS	µmol/l	Park, K T
12	Dimethylsulfoniopropionate, particulate	DMSP part	nmol/l	Park, K T
13	Carbon, organic, particulate	POC	µmol/kg	Park, K T
14	Carbon, organic, dissolved	DOC	µmol/kg	Park, K T
15	Chlorophyll a	Chl a	µg/l	Park, K T
16	Nitrate and Nitrite	[NO3]- + [NO2]-	µmol/l	Park, K T
17	Phosphate	[PO4]3-	µmol/l	Park, K T
18	Silicate	Si(OH)4	µmol/l	Park, K T
19	Ammonia	NH3	µmol/l	Park, K T
20	Species	Species		Park, K T
21	Cell density	Cells	#/ml	Park, K T
22	Biomass	Biom	g/l	Park, K T
23	Fucoxanthin	Fucoxanthin	%	Park, K T
24	Zeaxanthin	Zea	%	Park, K T
25	Chlorophyll b	Chl b	%	Park, K T
26	Alloxanthin	Allo	%	Park, K T
27	19-Hexanoyloxyfucoxanthin	Hex-fuco	%	Park, K T
28	Peridinin	Perid	%	Park, K T
29	Grazing rate	Graz rate	1/day	Park, K T
30	Grazing rate, standard error	Graz rate	±	Park, K T
31	Dimethylsulfoniopropionate lyase activity	DLA	mmol/l/h	Park, K T
32	Dimethylsulfoniopropionate lyase activity, standard deviation	DLA std dev	±	Park, K T
33	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
35	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	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)
37	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)
38	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
39	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
40	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
41	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:

29214 data points

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