Guan, WanChun; Gao, Kunshan (2010): Seawater carbonate chemistry and Emiliania huxleyi biological processes during experiments, 2010 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.758212, Supplement to: Guan, WC; Gao, K (2010): Enhanced calcification ameliorates the negative effects of UV radiation on photosynthesis in the calcifying phytoplankter Emiliania huxleyi. Chinese Science Bulletin, 55(7), 588-593, https://doi.org/10.1007/s11434-010-0042-5
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Abstract:
The calcifying phytoplankton species, coccolithophores, have their calcified coccoliths around the cells, however, their physiological roles are still unknown. Here, we hypothesized that the coccoliths may play a certain role in reducing solar UV radiation (UVR, 280-400 nm) and protect the cells from being harmed. Cells of Emiliania huxleyi with different thicknesses of the coccoliths were obtained by culturing them at different levels of dissolved inorganic carbon and their photophysiological responses to UVR were investigated. Although increased dissolved inorganic carbon decreased the specific growth rate, the increased coccolith thickness significantly ameliorated the photoinhibition of PSII photochemical efficiency caused by UVR. Increase by 91% in the coccolith thickness led to 35% increase of the PSII yield and 22% decrease of the photoinhibition of the effective quantum yield by UVR. The coccolith cover reduced more UVA (320-400 nm) than UVB (280-315 nm), leading to less inhibition per energy at the UV-A band.
Keyword(s):
Project(s):
Funding:
Sixth Framework Programme (FP6), grant/award no. 511106: European network of excellence for Ocean Ecosystems Analysis
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):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
123 data points
Data
1 Sal (Measured) | 2 Temp [°C] (Measured) | 3 L:D [hh:hh] (Measured) | 4 DIC [µmol/l] (Measured) | 5 pH (NBS scale, H+ ion concentrati...) | 6 DIC [µmol/kg] (Calculated) | 7 pH (NBS scale, H+ ion concentrati...) | 8 AT [µmol/kg] (Calculated using CO2SYS) | 9 µ [#/day] (Calculated) | 10 µ std dev [±] | 11 PIC/cell [pg/#] (Calculated) | 12 PIC/cell std dev [±] | 13 E. huxleyi >9 µm [%] (Microscopy) | 14 E. huxleyi 8-9 µm [%] (Microscopy) | 15 E. huxleyi 5-7 µm [%] (Microscopy) | 16 E. huxleyi <5 µm [%] (Microscopy) | 17 E. huxleyi FSC-A (C-cell, Flow cytometry) | 18 E. huxleyi FSC-A std dev (C-cell) | 19 E. huxleyi FSC-A (N-cell, Flow cytometry) | 20 E. huxleyi FSC-A std dev (N-cell) | 21 Y (PAR, Pulse Amplitude Modulate...) | 22 Y std e [±] (PAR) | 23 Y (PAR+UVA, Pulse Amplitude Modu...) | 24 Y std e [±] (PAR+UVA) | 25 Y (PAR+UVR, Pulse Amplitude Modu...) | 26 Y std e [±] (PAR+UVR) | 27 UVR-induced inhibition of PN [%] (UVR, Steemann-Nielsen (1952) ...) | 28 UVR-induced inhibition of PN std dev [±] (UVR) | 29 UVR-induced inhibition of PN [%] (UVA, Steemann-Nielsen (1952) ...) | 30 UVR-induced inhibition of PN std dev [±] (UVA) | 31 UVR-induced inhibition of PN [%] (UVB, Steemann-Nielsen (1952) ...) | 32 UVR-induced inhibition of PN std dev [±] (UVB) | 33 CSC flag (Calculated using seacarb afte...) | 34 pH (Total scale, H+ ion concentra...) | 35 CO2 [µmol/kg] (Calculated using seacarb afte...) | 36 pCO2water_SST_wet [µatm] (Calculated using seacarb afte...) | 37 fCO2water_SST_wet [µatm] (Calculated using seacarb afte...) | 38 [HCO3]- [µmol/kg] (Calculated using seacarb afte...) | 39 [CO3]2- [µmol/kg] (Calculated using seacarb afte...) | 40 Omega Arg (Calculated using seacarb afte...) | 41 Omega Cal (Calculated using seacarb afte...) |
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28 | 20 | 12:12 | 2000 | 8.05 | 1961.9 | 7.90 | 2054.0 | 0.44 | 0.05 | 4.5 | 0.110 | 1.46 | 16.97 | 69.17 | 12.41 | 81878 | 987 | 76543 | 1221 | 0.338 | 0.020 | 0.205 | 0.021 | 0.183 | 0.008 | 46.965 | 4.109 | 39.674 | 2.521 | 7.977 | 6.447 | 27 | 7.77 | 26.47 | 789.07 | 786.42 | 1853.56 | 81.84 | 1.31 | 2.06 |
28 | 20 | 12:12 | 7000 | 8.15 | 6866.6 | 7.99 | 7186.1 | 0.38 | 0.08 | 8.2 | 0.629 | 36.23 | 35.79 | 27.05 | 0.93 | 122089 | 1191 | 104900 | 655 | 0.374 | 0.005 | 0.236 | 0.006 | 0.201 | 0.010 | 46.989 | 3.349 | 37.786 | 3.527 | 9.310 | 1.631 | 27 | 7.86 | 74.75 | 2228.20 | 2220.74 | 6441.76 | 350.05 | 5.61 | 8.79 |
28 | 20 | 12:12 | 22000 | 8.25 | 21580.6 | 8.09 | 22820.5 | 0.32 | 0.12 | 8.8 | 1.436 | 63.56 | 31.37 | 5.07 | 0.00 | 123897 | 2346 | 107300 | 1200 | 0.374 | 0.016 | 0.274 | 0.031 | 0.238 | 0.009 | 35.334 | 2.229 | 27.374 | 8.565 | 9.960 | 5.866 | 27 | 7.96 | 184.52 | 5500.70 | 5482.29 | 20025.74 | 1370.35 | 21.95 | 34.41 |