Apostolaki, Eugenia T; Vizzini, Salvatrice; Hendriks, Iris; Olsen, Ylva (2014): Seagrass ecosystem response to long-term high CO2 in a Mediterranean volcanic vent [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.833844, Supplement to: Apostolaki, ET et al. (2014): Seagrass ecosystem response to long-term high CO2 in a Mediterranean volcanic vent. Marine Environmental Research, 99, 9-15, https://doi.org/10.1016/j.marenvres.2014.05.008
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
We examined the long-term effect of naturally acidified water on a Cymodocea nodosa meadow growing at a shallow volcanic CO2 vent in Vulcano Island (Italy). Seagrass and adjacent unvegetated habitats growing at a low pH station (pH = 7.65 ± 0.02) were compared with corresponding habitats at a control station (pH = 8.01 ± 0.01). Density and biomass showed a clear decreasing trend at the low pH station and the below- to above-ground biomass ratio was more than 10 times lower compared to the control. C content and delta 13C of leaves and epiphytes were significantly lower at the low pH station. Photosynthetic activity of C. nodosa was stimulated by low pH as seen by the significant increase in Chla content of leaves, maximum electron transport rate and compensation irradiance. Seagrass community metabolism was intense at the low pH station, with significantly higher net community production, respiration and gross primary production than the control community, whereas metabolism of the unvegetated community did not differ between stations. Productivity was promoted by the low pH, but this was not translated into biomass, probably due to nutrient limitation, grazing or poor environmental conditions. The results indicate that seagrass response in naturally acidified conditions is dependable upon species and geochemical characteristics of the site and highlight the need for a better understanding of complex interactions in these environments.
Keyword(s):
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):
Funding:
Seventh Framework Programme (FP7), grant/award no. 265103: Mediterranean Sea Acidification in a Changing Climate
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 2014-07-07.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
300 data points
Data
1 Species | 2 Group | 3 Treat | 4 Shoot den [#/m2] | 5 Shoot den std e [±] | 6 Biom [g/m2] (above ground) | 7 Biom std e [±] (above ground) | 8 Biom [g/m2] (below ground) | 9 Biom std e [±] (below ground) | 10 C [%] (per dry weight) | 11 C std e [±] (per dry weight) | 12 δ13C [‰ PDB] | 13 δ13C std e [±] | 14 Chl a [µg/g] | 15 Chl a std e [±] | 16 Epiphytes load [g/g] (per dry weight leaf) | 17 Epiphytes load std e [±] (per dry weight leaf) | 18 CaCO3 [%] (per dry weight) | 19 CaCO3 std e [±] (per dry weight) | 20 Fv/Fm | 21 Fv/Fm std e [±] | 22 ETR [µmol e/m2/s] (max) | 23 ETR std e [±] (max) | 24 Ik | 25 Ik std e [±] | 26 alpha | 27 alpha std e [±] | 28 E [µmol/m2/s] (optimum) | 29 E std e [±] (optimum) | 30 NCP C [mmol/m2/day] | 31 NCP C std e [±] | 32 Resp C [mmol/m2/day] | 33 Resp C std e [±] | 34 GPP C [mmol/m2/day] | 35 GPP C std e [±] | 36 E v [lx] | 37 E v std e [±] | 38 Sal | 39 Temp [°C] | 40 T std e [±] | 41 pH (Potentiometric) | 42 pH std e [±] (Potentiometric) | 43 O2 [µmol/l] | 44 O2 std e [±] | 45 pCO2water_SST_wet [µatm] | 46 pCO2water_SST_wet std e [±] | 47 DIC [µmol/kg] | 48 DIC std e [±] | 49 AT [µmol/kg] (Potentiometric titration) | 50 AT std e [±] (Potentiometric titration) | 51 CSC flag (Calculated using seacarb afte...) | 52 pH (total scale, Calculated using...) | 53 CO2 [µmol/kg] (Calculated using seacarb afte...) | 54 pCO2water_SST_wet [µatm] (Calculated using seacarb afte...) | 55 fCO2water_SST_wet [µatm] (Calculated using seacarb afte...) | 56 [HCO3]- [µmol/kg] (Calculated using seacarb afte...) | 57 [CO3]2- [µmol/kg] (Calculated using seacarb afte...) | 58 DIC [µmol/kg] (Calculated using seacarb afte...) | 59 Omega Arg (Calculated using seacarb afte...) | 60 Omega Cal (Calculated using seacarb afte...) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cymodocea nodosa (seagrass) | Low pH | 1238 | 117 | 112.2 | 15.500 | 18.72 | 9.40 | 34.11 | 0.46 | -11.59 | 0.05 | 3965.33 | 563.02 | 0.74 | 0.01 | 44.75 | 5.36 | 228.85 | 34.56 | 0.20 | 0.02 | 1674 | 448 | 29454 | 1376 | 38.2 | 19.74 | 0.06 | 7.65 | 0.02 | 229.01 | 2.89 | 2016 | 72 | 2419 | 6 | 2495 | 6 | 15 | 7.53 | 52 | 1622 | 1616 | 2311 | 75 | 2438 | 1.14 | 1.75 | |||||||||||
Cymodocea nodosa (seagrass) | Control | 1813 | 492 | 204.4 | 37.200 | 287.65 | 228.42 | 36.94 | 0.20 | -7.11 | 0.04 | 1247.09 | 91.72 | 0.74 | 0.02 | 29.00 | 0.93 | 110.59 | 13.35 | 0.27 | 0.03 | 1246 | 278 | 17311 | 1375 | 38.2 | 19.68 | 0.01 | 8.01 | 0.01 | 236.73 | 2.82 | 699 | 99 | 2258 | 8 | 2470 | 8 | 15 | 7.89 | 20 | 637 | 634 | 2087 | 156 | 2263 | 2.37 | 3.63 | |||||||||||
Epiphytes | Low pH | 12.38 | 0.30 | -17.97 | 0.20 | 0.080 | 0.01 | 15.14 | 3.00 | 29454 | 1376 | 38.2 | 19.74 | 0.06 | 7.65 | 0.02 | 229.01 | 2.89 | 2016 | 72 | 2419 | 6 | 2495 | 6 | 15 | 7.53 | 52 | 1622 | 1616 | 2311 | 75 | 2438 | 1.14 | 1.75 | |||||||||||||||||||||||||
Epiphytes | Control | 20.23 | 1.27 | -14.39 | 0.15 | 0.120 | 0.02 | 20.44 | 1.72 | 17311 | 1375 | 38.2 | 19.68 | 0.01 | 8.01 | 0.01 | 236.73 | 2.82 | 699 | 99 | 2258 | 8 | 2470 | 8 | 15 | 7.89 | 20 | 637 | 634 | 2087 | 156 | 2263 | 2.37 | 3.63 | |||||||||||||||||||||||||
unvegetated sediment | Low pH | -42.12 | 34.34 | 30.37 | 16.90 | -54.06 | 9.47 | 29454 | 1376 | 38.2 | 19.74 | 0.06 | 7.65 | 0.02 | 229.01 | 2.89 | 2016 | 72 | 2419 | 6 | 2495 | 6 | 15 | 7.53 | 52 | 1622 | 1616 | 2311 | 75 | 2438 | 1.14 | 1.75 | |||||||||||||||||||||||||||
unvegetated sediment | Control | -47.05 | 34.82 | 42.17 | 28.53 | -73.23 | 51.15 | 17311 | 1375 | 38.2 | 19.68 | 0.01 | 8.01 | 0.01 | 236.73 | 2.82 | 699 | 99 | 2258 | 8 | 2470 | 8 | 15 | 7.89 | 20 | 637 | 634 | 2087 | 156 | 2263 | 2.37 | 3.63 | |||||||||||||||||||||||||||
seagrass meadow | Low pH | 185.55 | 29.15 | 176.34 | 23.79 | 361.89 | 38.89 | 29454 | 1376 | 38.2 | 19.74 | 0.06 | 7.65 | 0.02 | 229.01 | 2.89 | 2016 | 72 | 2419 | 6 | 2495 | 6 | 15 | 7.53 | 52 | 1622 | 1616 | 2311 | 75 | 2438 | 1.14 | 1.75 | |||||||||||||||||||||||||||
seagrass meadow | Control | 38.13 | 27.99 | 61.15 | 22.35 | 83.27 | 48.29 | 17311 | 1375 | 38.2 | 19.68 | 0.01 | 8.01 | 0.01 | 236.73 | 2.82 | 699 | 99 | 2258 | 8 | 2470 | 8 | 15 | 7.89 | 20 | 637 | 634 | 2087 | 156 | 2263 | 2.37 | 3.63 |