Data Description

Citation:
Gazeau, Frédéric; Gattuso, Jean-Pierre; Dawber, Caroline F; Pronker, A E; Peene, F; Peene, J; Heip, Carlo H R; Middelburg, Jack J (2010): Seawater carbonate chemistry and biological processes during experiments with early life stages of the blue mussel Mytilus edulis, 2010. doi:10.1594/PANGAEA.745072
Reference(s):
Gazeau, Frédéric; Gattuso, Jean-Pierre; Dawber, Caroline F; Pronker, A E; Peene, F; Peene, J; Heip, Carlo H R; Middelburg, Jack J (2010): Effect of ocean acidification on the early life stages of the blue mussel Mytilus edulis. Biogeosciences, 7(7), 2051-2060, doi:10.5194/bg-7-2051-2010 *
Abstract:
Several experiments have shown a decrease of growth and calcification of organisms at decreased pH levels. There is a growing interest to focus on early life stages that are believed to be more sensitive to environmental disturbances such as hypercapnia. Here, we present experimental data, acquired in a commercial hatchery, demonstrating that the growth of planktonic mussel (Mytilus edulis) larvae is significantly affected by a decrease of pH to a level expected for the end of the century. Even though there was no significant effect of a 0.25-0.34 pH unit decrease on hatching and mortality rates during the first 2 days of development nor during the following 13-day period prior to settlement, final shells were respectively 4.5±1.3 and 6.0±2.3% smaller at pHNBS~7.8 (pCO2~1100-1200 µatm) than at a control pHNBS of ~8.1 (pCO2~460-640 µatm). Moreover, a decrease of 12.0±5.4% of shell thickness was observed after 15d of development. More severe impacts were found with a decrease of ~0.5 pHNBS unit during the first 2 days of development which could be attributed to a decrease of calcification due to a slight undersaturation of seawater with respect to aragonite. Indeed, important effects on both hatching and D-veliger shell growth were found. Hatching rates were 24±4% lower while D-veliger shells were 12.7±0.9% smaller at pHNBS~7.6 (pCO2~1900 µatm) than at a control pHNBS of ~8.1 (pCO2~540 µatm). Although these results show that blue mussel larvae are still able to develop a shell in seawater undersaturated with respect to aragonite, the observed decreases of hatching rates and shell growth could lead to a significant decrease of the settlement success. As the environmental conditions considered in this study do not necessarily reflect the natural conditions experienced by this species at the time of spawning, future studies will need to consider the whole larval cycle (from fertilization to settlement) under environmentally relevant conditions in order to investigate the potential ecological and economical losses of a decrease of this species fitness in the field.
Project(s):
European Project on Ocean Acidification (EPOCA) *
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Identification *IDGazeau, Frédéric *
2Experimental treatment *Exp trtmGazeau, Frédéric *
3Experiment day *Exp daydayGazeau, Frédéric *
4Temperature, water *Temp°CGazeau, Frédéric *
5Temperature, standard deviation *T std dev±Gazeau, Frédéric *
6Salinity *SalGazeau, Frédéric *
7Salinity standard deviation *S sdt dev±Gazeau, Frédéric *
8Oxygen, saturation *O2 sat%Gazeau, Frédéric *
9Oxygen, standard deviation *O2 std dev±Gazeau, Frédéric *
10pH *pHGazeau, Frédéric *pH meter (Metrohm electrodes) *NBS scale
11pH, standard deviation *pH std dev±Gazeau, Frédéric *
12Chlorophyll a *Chl aµg/lGazeau, Frédéric *
13Chlorophyll a, standard deviation *Chl a std dev±Gazeau, Frédéric *
14Total alkalinity *TAµmol/kgGazeau, Frédéric *Alkalinity, Gran titration (Gran, 1950) *
15Alkalinity, total, standard deviation *Alk std dev±Gazeau, Frédéric *
16Partial pressure of Carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmGazeau, Frédéric *calculated using CO2 1.1 (M. Frankignoulle) *
17Total carbon *TCµmol/kgGazeau, Frédéric *calculated using CO2 1.1 (M. Frankignoulle) *
18Bicarbonate ion concentration *HCO3-µmol/kgGazeau, Frédéric *calculated using CO2 1.1 (M. Frankignoulle) *
19Carbonate ion concentration *CO3**2-µmol/kgGazeau, Frédéric *calculated using CO2 1.1 (M. Frankignoulle) *
20Aragonite saturation state *SI AragGazeau, Frédéric *calculated using CO2 1.1 (M. Frankignoulle) *
21Calcite saturation state *SI CalGazeau, Frédéric *calculated using CO2 1.1 (M. Frankignoulle) *
22Carbonate system computation flag *CSC flagGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
23pH *pHGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *Total scale
24Carbon dioxide *CO2µmol/kgGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
25Partial pressure of Carbon dioxide (water) at sea surface temperature (wet air) *pCO2water_SST_wetµatmGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
26Fugacity of Carbon dioxide (water) at sea surface temperature (wet air) *fCO2water_SST_wetµatmGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
27Bicarbonate ion concentration *HCO3-µmol/kgGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
28Carbonate ion concentration *CO3**2-µmol/kgGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
29Total carbon *TCµmol/kgGazeau, Frédéric *calculated using CO2SYS *
30Aragonite saturation state *SI AragGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
31Calcite saturation state *SI CalGazeau, Frédéric *calculated using seacarb by Anne-Marin Nisumaa *
32Mytilus edulis, D-larvae hatching rate success *M. edulis d-larv hatc%Gazeau, Frédéric *
33Mytilus edulis, D-larvae hatching rate success, standard deviation *M. edulis d-larv hatc std dev±Gazeau, Frédéric *
34Mytilus edulis, D-larvae shell length *M. edulis l D-larv shellµmGazeau, Frédéric *
35Mytilus edulis, D-larvae shell length, standard deviation *M. edulis l D-larv shell std dev±Gazeau, Frédéric *
36Mytilus edulis *M. edulis#Gazeau, Frédéric *
37Mytilus edulis, standard deviation *M. edulis std dev±Gazeau, Frédéric *
38Mytilus edulis, shell length *M. edulis shell lµmGazeau, Frédéric *
39Mytilus edulis, shell length, standard deviation *M. edulis shell l std dev±Gazeau, Frédéric *
40Mytilus edulis, shell thickness *M. edulis shell thickµmGazeau, Frédéric *
41Mytilus edulis, shell thickness, standard deviation *M. edulis shell thick std dev±Gazeau, Frédéric *
License:
CC-BY Creative Commons Attribution 3.0 Unported
Size:
552 data points

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