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Johnson, Maggie Dorothy; Price, Nichole N; Smith, Jennifer E (2014): Contrasting effects of ocean acidification on tropical fleshy and calcareous algae [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.838995, Supplement to: Johnson, MD et al. (2014): Contrasting effects of ocean acidification on tropical fleshy and calcareous algae. PeerJ, 2, e411, https://doi.org/10.7717/peerj.411

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Abstract:
Despite the heightened awareness of ocean acidification (OA) effects on marine organisms, few studies empirically juxtapose biological responses to CO2 manipulations across functionally distinct primary producers, particularly benthic algae. Algal responses to OA may vary because increasing CO2 has the potential to fertilize photosynthesis but impair biomineralization. Using a series of repeated experiments on Palmyra Atoll, simulated OA effects were tested across a suite of ecologically important coral reef algae, including five fleshy and six calcareous species. Growth, calcification and photophysiology were measured for each species independently and metrics were combined from each experiment using a meta-analysis to examine overall trends across functional groups categorized as fleshy, upright calcareous, and crustose coralline algae (CCA). The magnitude of the effect of OA on algal growth response varied by species, but the direction was consistent within functional groups. Exposure to OA conditions generally enhanced growth in fleshy macroalgae, reduced net calcification in upright calcareous algae, and caused net dissolution in CCA. Additionally, three of the five fleshy seaweeds tested became reproductive upon exposure to OA conditions. There was no consistent effect of OA on algal photophysiology. Our study provides experimental evidence to support the hypothesis that OA will reduce the ability of calcareous algae to biomineralize. Further, we show that CO2 enrichment either will stimulate population or somatic growth in some species of fleshy macroalgae. Thus, our results suggest that projected OA conditions may favor non-calcifying algae and influence the relative dominance of fleshy macroalgae on reefs, perpetuating or exacerbating existing shifts in reef community structure.
Keyword(s):
Acanthophora spicifera; Avrainvillea amadelpha; Benthos; Bottles or small containers/Aquaria (<20 L); Caulerpa serrulata; Chlorophyta; Coast and continental shelf; Dichotomaria marginata; Dictyota bartayresiana; Galaxaura rugosa; Growth/Morphology; Halimeda opuntia; Halimeda taenicola; Hypnea pannosa; Laboratory experiment; Lithophyllum prototypum; Lithophyllum sp.; Macroalgae; North Pacific; Ochrophyta; Plantae; Primary production/Photosynthesis; Rhodophyta; Single species; Tropical
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
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 2014-11-18.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1TableTabJohnson, Maggie Dorothy
2SpeciesSpeciesJohnson, Maggie Dorothy
3SpeciesSpeciesJohnson, Maggie Dorothy
4ExperimentExpJohnson, Maggie Dorothy
5TreatmentTreatJohnson, Maggie Dorothy
6ReplicatesRepl#Johnson, Maggie Dorothygrowth rate
7Growth rateµmg/g/dayJohnson, Maggie Dorothy
8Growth rate, standard errorµ std e±Johnson, Maggie Dorothy
9ReplicatesRepl#Johnson, Maggie Dorothyphotosynthetic parameters
10Run NumberRun#Johnson, Maggie DorothyRLCs
11Maximal electron transport rate, relativerETR maxµmol e/m2/sJohnson, Maggie Dorothy
12Maximal electron transport rate, relative, standard errorrETR max std e±Johnson, Maggie Dorothy
13Photosynthetic efficiencyalphaµmol electrons/µmol quantaJohnson, Maggie Dorothy
14Photosynthetic efficiency, standard erroralpha std e±Johnson, Maggie Dorothy
15Photoinhibitionbetaµmol electrons/µmol quantaJohnson, Maggie Dorothy
16Photoinhibition, standard errorbeta std e±Johnson, Maggie Dorothy
17Temperature, waterTemp°CJohnson, Maggie Dorothy
18ReplicatesRepl#Johnson, Maggie Dorothycarboante chemistry
19SalinitySalJohnson, Maggie Dorothy
20Salinity, standard errorSal std e±Johnson, Maggie Dorothy
21Alkalinity, totalATµmol/kgJohnson, Maggie DorothyPotentiometric titration
22Alkalinity, total, standard errorAT std e±Johnson, Maggie DorothyPotentiometric titration
23Carbon, inorganic, dissolvedDICµmol/kgJohnson, Maggie DorothyCoulometric titration
24Carbon, inorganic, dissolved, standard errorDIC std e±Johnson, Maggie DorothyCoulometric titration
25pHpHJohnson, Maggie DorothyCalculated using CO2SYSseawater scale
26pH, standard errorpH std e±Johnson, Maggie DorothyCalculated using CO2SYSseawater scale
27Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmJohnson, Maggie DorothyCalculated using CO2SYS
28Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard errorpCO2water_SST_wet std e±Johnson, Maggie DorothyCalculated using CO2SYS
29Bicarbonate ion[HCO3]-µmol/kgJohnson, Maggie DorothyCalculated using CO2SYS
30Bicarbonate ion, standard error[HCO3]- std e±Johnson, Maggie DorothyCalculated using CO2SYS
31Carbonate ion[CO3]2-µmol/kgJohnson, Maggie DorothyCalculated using CO2SYS
32Carbonate ion, standard error[CO3]2- std e±Johnson, Maggie DorothyCalculated using CO2SYS
33Calcite saturation stateOmega CalJohnson, Maggie DorothyCalculated using CO2SYS
34Calcite saturation state, standard errorOmega Cal std e±Johnson, Maggie DorothyCalculated using CO2SYS
35Aragonite saturation stateOmega ArgJohnson, Maggie DorothyCalculated using CO2SYS
36Aragonite saturation state, standard errorOmega Arg std e±Johnson, Maggie DorothyCalculated using CO2SYS
37Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
38pHpHYang, YanCalculated using seacarb after Nisumaa et al. (2010)total scale
39Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
40Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
41Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
42Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
43Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
44Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
45Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2271 data points

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