James, Rebecca K; Hepburn, Christopher D; Cornwall, Christopher Edward; McGraw, Christina M; Hurd, Catriona L (2014): Growth response of an early successional assemblage of coralline algae and benthic diatoms to ocean acidification [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.833741, Supplement to: James, RK et al. (2014): Growth response of an early successional assemblage of coralline algae and benthic diatoms to ocean acidification. Marine Biology, 161(7), 1687-1696, https://doi.org/10.1007/s00227-014-2453-3
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Abstract:
The sustained absorption of anthropogenically released atmospheric CO2 by the oceans is modifying seawater carbonate chemistry, a process termed ocean acidification (OA). By the year 2100, the worst case scenario is a decline in the average oceanic surface seawater pH by 0.3 units to 7.75. The changing seawater carbonate chemistry is predicted to negatively affect many marine species, particularly calcifying organisms such as coralline algae, while species such as diatoms and fleshy seaweed are predicted to be little affected or may even benefit from OA. It has been hypothesized in previous work that the direct negative effects imposed on coralline algae, and the direct positive effects on fleshy seaweeds and diatoms under a future high CO2 ocean could result in a reduced ability of corallines to compete with diatoms and fleshy seaweed for space in the future. In a 6-week laboratory experiment, we examined the effect of pH 7.60 (pH predicted to occur due to ocean acidification just beyond the year 2100) compared to pH 8.05 (present day) on the lateral growth rates of an early successional, cold-temperate species assemblage dominated by crustose coralline algae and benthic diatoms. Crustose coralline algae and benthic diatoms maintained positive growth rates in both pH treatments. The growth rates of coralline algae were three times lower at pH 7.60, and a non-significant decline in diatom growth meant that proportions of the two functional groups remained similar over the course of the experiment. Our results do not support our hypothesis that benthic diatoms will outcompete crustose coralline algae under future pH conditions. However, while crustose coralline algae were able to maintain their presence in this benthic rocky reef species assemblage, the reduced growth rates suggest that they will be less capable of recolonizing after disturbance events, which could result in reduced coralline cover under OA conditions.
Keyword(s):
Further details:
Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb
Project(s):
Coverage:
Latitude: -45.638890 * Longitude: 170.670830
Date/Time Start: 2009-11-01T00:00:00 * Date/Time End: 2009-11-30T00:00:00
Event(s):
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 2014-07-02.
Parameter(s):
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
620 data points
Data
1 Species | 2 Treat | 3 Area [mm2] | 4 Area std e [±] | 5 Cat | 6 Perc [%] | 7 Perc std e [±] | 8 Temp [°C] | 9 Temp std dev [±] | 10 AT [µmol/kg] | 11 AT std e [±] | 12 pH | 13 pH std dev [±] | 14 Sal | 15 CSC flag | 16 CO2 [µmol/kg] | 17 pCO2water_SST_wet [µatm] | 18 fCO2water_SST_wet [µatm] | 19 [HCO3]- [µmol/kg] | 20 [CO3]2- [µmol/kg] | 21 DIC [µmol/kg] | 22 Omega Arg | 23 Omega Cal |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Corallines (macroalga) | Present day | 312.09 | 75.15 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | |||
Diatoms (phytoplankton) | Present day | 256.97 | 99.43 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | |||
Fleshy Seaweed (macroalga) | Present day | 0.00 | 0.00 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | |||
Bare Space | Present day | -315.40 | 71.99 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | |||
Corallines (macroalga) | pH 7.6 | 111.25 | 26.73 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | |||
Diatoms (phytoplankton) | pH 7.6 | 114.11 | 27.33 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | |||
Fleshy Seaweed (macroalga) | pH 7.6 | 40.62 | 38.01 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | |||
Bare Space | pH 7.6 | -122.01 | 41.50 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | |||
Coralline algae (macroalga) | Present day | The same | 55.379867050 | 7.943671405 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Coralline algae (macroalga) | pH 7.6 | The same | 63.015873020 | 7.028231817 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Coralline algae (macroalga) | Present day | Overgrown by diatoms | 44.620132950 | 11.541886970 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Coralline algae (macroalga) | pH 7.6 | Overgrown by diatoms | 35.873015870 | 6.651113614 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Coralline algae (macroalga) | Present day | Overgrown by fleshy seaweed | 0.000000000 | 0.000000000 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Coralline algae (macroalga) | pH 7.6 | Overgrown by fleshy seaweed | 1.111111111 | 1.111111111 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Diatoms growing on perspex substratum (phytoplankton) | Present day | The same | 86.666666670 | 9.718253158 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Diatoms growing on perspex substratum (phytoplankton) | pH 7.6 | The same | 96.666666670 | 3.333333333 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Diatoms growing on perspex substratum (phytoplankton) | Present day | Overgrown by corallines | 10.000000000 | 10.000000000 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Diatoms growing on perspex substratum (phytoplankton) | pH 7.6 | Overgrown by corallines | 0.000000000 | 0.000000000 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Diatoms growing on perspex substratum (phytoplankton) | Present day | Replaced by bare surface | 3.333333333 | 3.333333333 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Diatoms growing on perspex substratum (phytoplankton) | pH 7.6 | Replaced by bare surface | 0.000000000 | 0.000000000 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Diatoms growing on perspex substratum (phytoplankton) | Present day | Overgrown by fleshy seaweed | 0.000000000 | 0.000000000 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Diatoms growing on perspex substratum (phytoplankton) | pH 7.6 | Overgrown by fleshy seaweed | 3.333333333 | 3.333333333 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Diatoms growing on corallines (phytoplankton) | Present day | The same | 70.000000000 | 23.804761430 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Diatoms growing on corallines (phytoplankton) | pH 7.6 | The same | 93.333333330 | 6.666666667 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Diatoms growing on corallines (phytoplankton) | Present day | Overgrown by corallines | 30.000000000 | 23.804761430 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | ||
Diatoms growing on corallines (phytoplankton) | pH 7.6 | Overgrown by corallines | 6.666666667 | 6.666666667 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Polychaetes | Present day | The same | 0.000000000 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | |||
Polychaetes | pH 7.6 | The same | 12.500000000 | 12.500000000 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 | ||
Polychaetes | Present day | Overgrown by diatoms | 100.000000000 | 11.6 | 0.3 | 2288 | 2.5 | 8.05 | 0.03 | 35 | 8 | 16 | 393 | 392 | 1935 | 141 | 2093 | 2.15 | 3.37 | |||
Polychaetes | pH 7.6 | Overgrown by diatoms | 87.500000000 | 12.500000000 | 11.6 | 0.3 | 2288 | 2.5 | 7.60 | 0.01 | 35 | 8 | 51 | 1230 | 1225 | 2149 | 56 | 2256 | 0.85 | 1.33 |