Data Description

  RIS BibTeX
Citation:
Krug, S et al. (2011): Seawater carbonate chemistry and biological processes during experiments with Coccolithus braarudii, 2011. doi:10.1594/PANGAEA.762350,
Supplement to: Krug, Sebastian; Schulz, Kai Georg; Riebesell, Ulf (2011): Effects of changes in carbonate chemistry speciation on Coccolithus braarudii: a discussion of coccolithophorid sensitivities. Biogeosciences, 8(3), 771-777, doi:10.5194/bg-8-771-2011
Abstract:
Ocean acidification and associated shifts in carbonate chemistry speciation induced by increasing levels of atmospheric carbon dioxide (CO2) have the potential to impact marine biota in various ways. The process of biogenic calcification, for instance, is usually shown to be negatively affected. In coccolithophores, an important group of pelagic calcifiers, changes in cellular calcification rates in response to changing ocean carbonate chemistry appear to differ among species. By applying a wider CO2 range we show that a species previously reported insensitive to seawater acidification, Coccolithusbraarudii, responds both in terms of calcification and photosynthesis, although at higher levels of CO2. Thus, observed differences between species seem to be related to individual sensitivities while the underlying mechanisms could be the same. On this basis we develop a conceptual model of coccolithophorid calcification and photosynthesis in response to CO2-induced changes in seawater carbonate chemistry speciation.
Project(s):
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne and Gattuso, 2011) 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).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Experimental treatment *Exp trtmKrug, Sebastian *
2Identification *IDKrug, Sebastian *
3Salinity *SalKrug, Sebastian *
4Temperature, water *Temp°CKrug, Sebastian *
5Radiation, photosynthetically active *PARµE/m2/sKrug, Sebastian *
6Light:Dark cycle *L:Dhh:hhKrug, Sebastian *
7Nitrate *NITRATµmol/kgKrug, Sebastian *
8Phosphate *PHSPHTµmol/kgKrug, Sebastian *
9Carbon, inorganic, dissolved *DICµmol/kgKrug, Sebastian *Photometrically using autoanalyzer QUAATRO *
10Alkalinity, total *ATµmol/kgKrug, Sebastian *Titration potentiometric, 794 Basic Titrino (Metrohm) *
11Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmKrug, Sebastian *
12Carbon dioxide *CO2µmol/kgKrug, Sebastian *
13Bicarbonate ion *[HCO3]-µmol/kgKrug, Sebastian *
14Carbonate ion *[CO3]2-µmol/kgKrug, Sebastian *
15Calcite saturation state *Omega CalKrug, Sebastian *
16pH *pHKrug, Sebastian *Total scale
17Production of particulate inorganic carbon per cell *PIC prodµmol/#/dayKrug, Sebastian *Thermal conductivity meter *
18Production of particulate organic carbon per cell *POC prodµmol/#/dayKrug, Sebastian *Thermal conductivity meter *
19Particulate inorganic carbon/particulate organic carbon ratio *PIC/POC ratioKrug, Sebastian *
20Particulate organic carbon/particulate organic nitrogen ratio *POC/PONKrug, Sebastian *Measured *
21Coccolithus braarudii, size *C. braarudii sizeµmKrug, Sebastian *Coulter counter *
22Coccolithus braarudii, size, standard deviation *C. braarudii size std dev±Krug, Sebastian *Coulter counter *
23Growth rate *µ#/dayKrug, Sebastian *Calculated, see reference(s) *
24Carbonate system computation flag *CSC flagNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
25pH *pHNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *Total scale
26Carbon dioxide *CO2µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
27Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
28Fugacity of carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
29Bicarbonate ion *[HCO3]-µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
30Carbonate ion *[CO3]2-µmol/kgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
31Aragonite saturation state *Omega ArgNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
32Calcite saturation state *Omega CalNisumaa, Anne-Marin *Calculated using seacarb after Nisumaa et al. (2010) *
License:
Size:
930 data points

Download Data

Download dataset as tab-delimited text (use the following character encoding: )

View dataset as HTML