Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Holcomb, Michael; McCorkle, Daniel C; Cohen, Anne L (2010): Seawater carbonate chemistry, nutrients and growth rate during experiments with coral Astrangia poculata, 2010. PANGAEA, https://doi.org/10.1594/PANGAEA.754778, In: Holcomb, M et al. (2010): Seawater carbonate chemistry, nutrients and growth rate during experiments with coral Astrangia poculata and field observations, 2010. PANGAEA, https://doi.org/10.1594/PANGAEA.754779

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX Citation

Abstract:
Zooxanthellate colonies of the scleractinian coral Astrangia poculata were grown under combinations of ambient and elevated nutrients (5 µM NO, 0.3 µM PO4, and 2nM Fe) and CO2 (780 ppmv) treatments for a period of 6 months. Coral calcification rates, estimated from buoyant weights, were not significantly affected by moderately elevated nutrients at ambient CO2 and were negatively affected by elevated CO2 at ambient nutrient levels. However, calcification by corals reared under elevated nutrients combined with elevated CO2 was not significantly different from that of corals reared under ambient conditions, suggesting that CO2 enrichment can lead to nutrient limitation in zooxanthellate corals. A conceptual model is proposed to explain how nutrients and CO2 interact to control zooxanthellate coral calcification. Nutrient limited corals are unable to utilize an increase in dissolved inorganic carbon (DIC) as nutrients are already limiting growth, thus the effect of elevated CO2 on saturation state drives the calcification response. Under nutrient replete conditions, corals may have the ability to utilize more DIC, thus the calcification response to CO2 becomes the product of a negative effect on saturation state and a positive effect on gross carbon fixation, depending upon which dominates, the calcification response can be either positive or negative. This may help explain how the range of coral responses found in different studies of ocean acidification can be obtained.
Related to:
Holcomb, Michael; McCorkle, Daniel C; Cohen, Anne L (2010): Long-term effects of nutrient and CO2 enrichment on the temperate coral Astrangia poculata (Ellis and Solander, 1786). Journal of Experimental Marine Biology and Ecology, 386(1-2), 27-33, https://doi.org/10.1016/j.jembe.2010.02.007
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 treatmentExp treatHolcomb, Michael
2SalinitySalHolcomb, MichaelHach conductivity probe
3Salinity, standard deviationSal std dev±Holcomb, Michael
4Temperature, waterTemp°CHolcomb, MichaelOnset logger
5Temperature, standard deviationT std dev±Holcomb, Michael
6PhosphatePHSPHTµmol/kgHolcomb, MichaelContinuous flow injection system, FIAlab 2600
7Phosphate, standard deviationPO4 std dev±Holcomb, Michael
8SilicateSILCATµmol/kgHolcomb, MichaelContinuous flow injection system, FIAlab 2600
9Silicon, standard deviationSi std dev±Holcomb, Michael
10Nitrate and Nitrite[NO3]- + [NO2]-µmol/kgHolcomb, MichaelContinuous flow injection system, FIAlab 2600
11Nitrate and Nitrite, standard deviation[NO3]- + [NO2]- std dev±Holcomb, Michael
12Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmHolcomb, MichaelInfrared pCO2 analyzer (Qubit S151)
13Carbon dioxide, partial pressure, standard deviationpCO2 std dev±Holcomb, Michael
14Alkalinity, totalATµmol/kgHolcomb, MichaelAlkalinity, Gran titration (Gran, 1950)
15Alkalinity, total, standard deviationAT std dev±Holcomb, Michael
16Calcification rateCalc rateg/m2/dayHolcomb, MichaelBuoyant weighing technique (Davies, 1989)
17Calcification rate, standard deviationCalc rate std dev±Holcomb, Michael
18Carbonate system computation flagCSC flagNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
19pHpHNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)Total scale
20Carbon dioxideCO2µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
21Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
22Bicarbonate ion[HCO3]-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
23Carbonate ion[CO3]2-µmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
24Carbon, inorganic, dissolvedDICµmol/kgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
25Aragonite saturation stateOmega ArgNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
26Calcite saturation stateOmega CalNisumaa, Anne-MarinCalculated using seacarb after Nisumaa et al. (2010)
Size:
104 data points

Download Data

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

View dataset as HTML