Description: Four strains of the coccolithophore Emiliania huxleyi (RCC1212, RCC1216, RCC1238, RCC1256) were grown in dilute batch culture at four CO2 levels ranging from ~200 µatm to ~1200 µatm. Coccolith morphology was analyzed based on scanning electron micrographs. Three of the four strains did not exhibit a change in morphology over the CO2 range tested. One strain (RCC1256) displayed an increase in the percentage of malformed coccoliths with increasing CO2 concentration. We conclude that the sensitivity of the coccolith-shaping machinery to carbonate chemistry changes is strain-specific. Although it has been shown before that carbonate chemistry related changes in growth- and calcification rate are strain-specific, there seems to be no consistent correlation between coccolith morphology and growth or calcification rate. We did not observe an increase in the percentage of incomplete coccoliths in RCC1256, indicating that the coccolith-shaping machinery per se is affected by acidification and not the signalling pathway that produces the stop-signal for coccolith growth.
Global identifier:
Doi(
"10.1594/PANGAEA.826456",
)
Measurements {
domain: Unspecified,
station: None,
measured_variables: [
"Event label",
"Species",
"Strain",
"Replicates",
"Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)",
"Coccoliths, normal",
"Coccoliths, normal, standard deviation",
"Malformation rate",
"Malformation rate, standard deviation",
"Coccoliths, incomplete",
"Coccoliths, incomplete, standard deviation",
"Coccoliths, malformed and incomplete",
"Coccoliths, malformed and incomplete, standard deviation",
"Nitrate",
"Phosphate",
"Alkalinity, total",
"Carbon, inorganic, dissolved",
"pH, NBS scale",
"Bicarbonate ion",
"Carbonate ion",
"Calcite saturation state",
"Salinity",
"Temperature, water",
"Carbonate system computation flag",
"pH, total scale",
"Carbon dioxide",
"Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)",
"Fugacity of carbon dioxide (water) at sea surface temperature (wet air)",
"Bicarbonate ion",
"Carbonate ion",
"Aragonite saturation state",
"Calcite saturation state",
],
methods: [
"Calculated using CO2SYS",
"Potentiometric titration",
"Calculated using CO2SYS",
"Calculated using CO2SYS",
"Calculated using CO2SYS",
"Calculated using CO2SYS",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
"Calculated using seacarb after Nisumaa et al. (2010)",
],
}
Dataset
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). The date of carbonate chemistry calculation by seacarb is 2014-01-20.
Origins: /Wissenschaft/PANGAEA
Tags: CO2-Konzentration ? Nitrat ? Meerestemperatur ? Meerwasser ? Phytoplankton ? Gesamtkohlenstoff ? Kohlendioxid ? Salzgehalt ? Gewässerzustand ? Laborversuch ? Versauerung ? Bottles or small containers/Aquaria (<20 L) ? Chromista ? Emiliania huxleyi ? Growth/Morphology ? Haptophyta ? Laboratory strains ? Not applicable ? Pelagos ? Single species ?
Bounding boxes: -20.33333° .. 169.83333° x -42.3° .. 63.4°
License: cc-by/3.0
Language: Englisch/English
Modified: 2022-12-15
Time ranges: 1998-09-01 - 2005-11-30
Accessed 1 times.