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Christen, Nadja; Calosi, Piero; McNeill, C L; Widdicombe, Stephen (2013): Structural and functional vulnerability to elevated pCO2 in marine benthic communities [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.823607, Supplement to: Christen, N et al. (2012): Structural and functional vulnerability to elevated pCO2 in marine benthic communities. Marine Biology, 160(8), 2113-2128, https://doi.org/10.1007/s00227-012-2097-0

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Abstract:
The effect of elevated pCO2/low pH on marine invertebrate benthic biodiversity, community structure and selected functional responses which underpin ecosystem services (such as community production and calcification) was tested in a medium-term (30 days) mesocosm experiment in June 2010. Standardised intertidal macrobenthic communities, collected (50.3567°N, 4.1277°W) using artificial substrate units (ASUs), were exposed to one of seven pH treatments (8.05, 7.8. 7.6, 7.4, 7.2, 6.8 and 6.0). Community net calcification/dissolution rates, as well as changes in biomass, community structure and diversity, were measured at the end of the experimental period. Communities showed significant changes in structure and reduced diversity in response to reduced pH: shifting from a community dominated by calcareous organisms to one dominated by non-calcareous organisms around either pH 7.2 (number of individuals and species) or pH 7.8 (biomass). These results were supported by a reduced total weight of CaCO3 structures in all major taxa at lowered pH and a switch from net calcification to net dissolution around pH 7.4 (Omega calc = 0.78, Omega ara = 0.5). Overall community soft tissue biomass did not change with pH and high mortality was observed only at pH 6.0, although molluscs and arthropods showed significant decreases in soft tissue. This study supports and refines previous findings on how elevated pCO2 can induce changes in marine biodiversity, underlined by differential vulnerability of different phyla. In addition, it shows significant elevated pCO2-/low pH-dependent changes in fundamental community functional responses underpinning changes in ecosystem services.
Keyword(s):
Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Coast and continental shelf; Community composition and diversity; Entire community; Laboratory experiment; North Atlantic; Rocky-shore community; Temperate
Further details:
Lavigne, Héloïse; Gattuso, Jean-Pierre (2011): seacarb: seawater carbonate chemistry with R. R package version 2.4. https://cran.r-project.org/package=seacarb
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
Coverage:
Latitude: 50.359444 * Longitude: -4.129722
Date/Time Start: 2010-01-04T00:00:00 * Date/Time End: 2010-01-04T00:00:00
Event(s):
Mount_Batten * Latitude: 50.359444 * Longitude: -4.129722 * Date/Time: 2010-01-04T00:00:00 * Method/Device: Experiment (EXP) * Comment: the artificial substrate units were deployed
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). The date of carbonate chemistry calculation by seacarb is 2013-12-04.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DescriptionDescriptionChristen, Nadja
2IdentificationIDChristen, Nadja
3TreatmentTreatChristen, Nadja
4Number of speciesSpec No#Christen, Nadja
5Number of individualsInd No#Christen, Nadja
6Evenness of speciesEChristen, Nadja
7Number of calcareous speciesSpec No calc#Christen, Nadja
8Number of non-calcareous speciesSpec No non-calc#Christen, Nadja
9Number of calcareous individualsInd No calc#Christen, Nadja
10Number of non-calcareous individualsInd No non-calc#Christen, Nadja
11Biomass, wet massBiom wmgChristen, Nadja
12Organisms, calcareous, biomassOrg calc biomgChristen, Nadja
13Organisms, non-calcareous, biomassOrg non-calc biomgChristen, Nadja
14Calcium carbonate, massCaCO3gChristen, Nadja
15Soft tissue, massSoft tisgChristen, Nadja
16Net calcification rate of calcium carbonateNC CaCO3µmol/g/hChristen, Nadja
17SalinitySalChristen, Nadja
18Salinity, standard deviationSal std dev±Christen, Nadja
19Temperature, waterTemp°CChristen, Nadja
20Temperature, standard deviationT std dev±Christen, Nadja
21Alkalinity, totalATµmol/kgChristen, NadjaPotentiometric titration
22Alkalinity, total, standard deviationAT std dev±Christen, NadjaPotentiometric titration
23pHpHChristen, NadjaPotentiometricNBS scale
24OxygenO%Christen, Nadja
25Oxygen, standard deviationO2 std dev±Christen, Nadja
26Carbon, inorganic, dissolvedDICµmol/kgChristen, NadjaCalculated using CO2SYS
27Carbon, inorganic, dissolved, standard deviationDIC std dev±Christen, NadjaCalculated using CO2SYS
28Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmChristen, NadjaCalculated using CO2SYS
29Partial pressure of carbon dioxide, standard deviationpCO2 std dev±Christen, NadjaCalculated using CO2SYS
30Bicarbonate ion[HCO3]-µmol/kgChristen, NadjaCalculated using CO2SYS
31Bicarbonate ion, standard deviation[HCO3]- std dev±Christen, NadjaCalculated using CO2SYS
32Carbonate ion[CO3]2-µmol/kgChristen, NadjaCalculated using CO2SYS
33Carbonate ion, standard deviation[CO3]2- std dev±Christen, NadjaCalculated using CO2SYS
34Calcite saturation stateOmega CalChristen, NadjaCalculated using CO2SYS
35Calcite saturation state, standard deviationOmega Cal std dev±Christen, NadjaCalculated using CO2SYS
36Aragonite saturation stateOmega ArgChristen, NadjaCalculated using CO2SYS
37Aragonite saturation state, standard deviationOmega Arg std dev±Christen, NadjaCalculated using CO2SYS
38Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
39pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
40Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
41Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
42Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
43Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
44Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
45Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
46Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
47Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
6573 data points

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