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Seawater carbonate chemistry and kelp densities and coral coverages at three study locations and photosynthesis and calcification of corals measured …

2021

Ocean warming is altering the biogeographical distribution of marine organisms. In the tropics, rising sea surface temperatures are restructuring coral reef communities with sensitive species being lost. At the biogeographical divide between temperate and tropical communities, warming is causing macroalgal forest loss and the spread of tropical corals, fishes and other species, termed “tropicalization”. A lack of field research into the combined effects of warming and ocean acidification means there is a gap in our ability to understand and plan for changes in coastal ecosystems. Here, we focus on the tropicalization trajectory of temperate marine ecosystems becoming coral-dominated systems…

Ocean Acidification International Coordination Centre (OA-ICC)Net calcification rate of calcium carbonate lightCommunity composition and diversityAlkalinity total standard deviationunique identificationTemperature waterCarbon inorganic dissolvedNet calcification rate of calcium carbonateCalculated using seacarb after Nisumaa et al 2010Color descriptionRespiration rate oxygenpHRespirationMonthCarbonate ionLaboratory experimentField experimentRespiration rateunique identification URIstandard deviationlightAcropora solitaryensisCalcification/DissolutionCalcite saturation statewaterPartial pressure of carbon dioxideSiteGrowth MorphologyRocky-shore communityAragonite saturation state standard deviationPorites heronensisCarbon inorganic dissolved standard deviationTypeCalculated using seacarb after Nisumaa et al. (2010)Primary production PhotosynthesisSpeciesBottles or small containers/Aquaria (<20 L)fungiEvent labeltechnology industry and agricultureCarbonate system computation flagpH standard deviationbiochemical phenomena metabolism and nutritionFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonPartial pressure of carbon dioxide water at sea surface temperature wet airEntire communitySingle speciesCalcification DissolutionBenthic animalsFugacity of carbon dioxide water at sea surface temperature wet airCoralCoast and continental shelfPhotosynthetic efficiencySpecies unique identification (URI)darkIdentificationRegistration number of speciesSalinityTemperateBottles or small containers/Aquaria (<20 L)inorganicAlkalinityArea localityNet photosynthesis rate oxygenExperimentArea/localityAragonite saturation stateNorth PacificAlkalinity totalBottles or small containers Aquaria 20 LtotalCO2 ventCalcification rate of calcium carbonateTemperaturedissolvedPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Temperature water standard deviationNet photosynthesis rateEarth System ResearchNet calcification rate of calcium carbonate darkField observationgeographic locationsSpecies unique identificationBenthosCnidariaDiameterOcean Acidification International Coordination Centre OA ICCAnimaliaBicarbonate ionGrowth ratePartial pressure of carbon dioxide standard deviationPrimary production/PhotosynthesisTreatmentCarbon dioxideGrowth/MorphologyRocky shore communityShootsoxygen

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Insights fromsodium into the impacts of elevated pCO2 and temperature on bivalve shell formation

2017

Ocean acidification and warming are predicted to affect the ability of marine bivalves to build their shells, but little is known about the underlying mechanisms. Shell formation is an extremely complex process requiring a detailed understanding of biomineralization processes. Sodium incorporation into the shells would increase if bivalves rely on the exchange of Na+/H+ to maintain homeostasis for shell formation, thereby shedding new light on the acid-base and ionic regulation at the calcifying front. Here, we investigated the combined effects of seawater pH (8.1, 7.7 and 7.4) and temperature (16 and 22 °C) on the growth and sodium composition of the shells of the blue mussel, Mytilus edul…

Ocean Acidification International Coordination Centre (OA-ICC)Registration number of speciesSalinityTemperateMytilus edulisinorganicAlkalinityGrowth rate standard deviationSodium/Calcium ratioExperimentPatinopecten yessoensisTemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateNorth PacificAlkalinity totalSalinity standard errortotalSodium Calcium ratiopHTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedCarbonate ionLaboratory experimentPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard errorContainers and aquaria 20 1000 L or 1 m 2Earth System ResearchContainers and aquaria (20-1000 L or < 1 m**2)standard deviationUniform resource locator link to referenceCalcification/DissolutionPotentiometric titrationCalcite saturation statewaterGrowth MorphologyContainers and aquaria (20-1000 L or < 1 m**2)Alkalinity total standard errorBenthosUniform resource locator/link to referenceOcean Acidification International Coordination Centre OA ICCAnimaliaBicarbonate ionTypeTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)SpeciespH standard errorGrowth rateCalculated using CO2SYSEvent labelCarbonate system computation flagFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonTreatmentPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideMolluscaGrowth/MorphologySingle speciesCalcification DissolutionBenthic animalsFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelf

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Sodium provides unique insights into transgenerational effects of ocean acidification on bivalve shell formation

2016

Ocean acidification is likely to have profound impacts on marine bivalves, especially on their early life stages. Therefore, it is imperative to know whether and to what extent bivalves will be able to acclimate or adapt to an acidifying ocean over multiple generations. Here, we show that reduced seawater pH projected for the end of this century (i.e., pH 7.7) led to a significant decrease of shell production of newly settled juvenile Manila clams, Ruditapes philippinarum. However, juveniles from parents exposed to low pH grew significantly faster than those from parents grown at ambient pH, exhibiting a rapid transgenerational acclimation to an acidic environment. The sodium composition of…

Ocean Acidification International Coordination Centre (OA-ICC)Registration number of speciesSalinityTemperateinorganicAlkalinitySodium/Calcium ratioExperimentTemperature waterCarbon inorganic dissolvedRuditapes philippinarumCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateNorth PacificAlkalinity totalSalinity standard errortotalSodium Calcium ratiopHTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedAcid base regulationCarbonate ionLaboratory experimentPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard errorContainers and aquaria 20 1000 L or 1 m 2Earth System ResearchContainers and aquaria (20-1000 L or < 1 m**2)Uniform resource locator link to referenceCalcite saturation statewaterGrowth MorphologyContainers and aquaria (20-1000 L or < 1 m**2)Alkalinity total standard errorBenthosUniform resource locator/link to referenceOcean Acidification International Coordination Centre OA ICCAnimaliaBicarbonate ionTypeTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)SpeciespH standard errorGrowth rateCarbonate system computation flagAcid-base regulationFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonTreatmentAragonite saturation state standard errorPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideSample IDMolluscaGrowth/MorphologySingle speciesBenthic animalsFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelf

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Could the acid-base status of Antarctic sea urchins indicate a better-than-expected resilience to near-future ocean acidification?

2015

Increasing atmospheric carbon dioxide concentration alters the chemistry of the oceans towards more acidic conditions. Polar oceans are particularly affected due to their low temperature, low carbonate content and mixing patterns, for instance upwellings. Calcifying organisms are expected to be highly impacted by the decrease in the oceans' pH and carbonate ions concentration. In particular, sea urchins, members of the phylum Echinodermata, are hypothesized to be at risk due to their high-magnesium calcite skeleton. However, tolerance to ocean acidification in metazoans is first linked to acid-base regulation capacities of the extracellular fluids. No information on this is available to dat…

Ocean Acidification International Coordination Centre (OA-ICC)SalinityNotocidaris gaussensisBicarbonate ion standard deviationinorganicAlkalinity total standard deviationAlkalinityCoulometric titrationExperimentCarbon inorganic dissolvedTemperature waterSizeCoelomic fluidCalculated using seacarb after Nisumaa et al 2010CalculatedAragonite saturation stateCtenocidaris giganteaAlkalinity totaltotalAmphipneustes loriolipHTemperaturedissolvedAcid base regulationCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Carbon dioxide standard deviationSterechinus neumayeriEarth System ResearchAporocidaris eltanianaδ13Cstandard deviationField observationPolarStation labelEchinodermataPotentiometric titrationCalcite saturation stateCoelomic fluid alkalinityPotentiometricwaterPartial pressure of carbon dioxideAmphipneustes similisAragonite saturation state standard deviationBenthosDATE TIMEOcean Acidification International Coordination Centre OA ICCSterechinus antarcticusAnimaliaCalcite saturation state standard deviationBicarbonate ionLONGITUDECalculated using seacarb after Nisumaa et al. (2010)SpeciesCalculated using CO2SYScarbonEvent labelPartial pressure of carbon dioxide standard deviationCoelomic fluid carbon inorganic dissolvedCarbonate system computation flagAcid-base regulationpH standard deviationCarbonate ion standard deviationFugacity of carbon dioxide (water) at sea surface temperature (wet air)Amphipneustes rostratusPartial pressure of carbon dioxide water at sea surface temperature wet airDATE/TIMECarbon dioxideDifferenceSingle speciesCoelomic fluid pHLATITUDEFugacity of carbon dioxide water at sea surface temperature wet airAntarcticBenthic animalsCoast and continental shelfAbatus cavernosus

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Ocean acidification impairs vermetid reef recruitment

2014

Vermetids form reefs in sub-tropical and warm-temperate waters that protect coasts from erosion, regulate sediment transport and accumulation, serve as carbon sinks and provide habitat for other species. The gastropods that form these reefs brood encapsulated larvae; they are threatened by rapid environmental changes since their ability to disperse is very limited. We used transplant experiments along a natural CO2 gradient to assess ocean acidification effects on the reef-building gastropod Dendropoma petraeum. We found that although D. petraeum were able to reproduce and brood at elevated levels of CO2, recruitment success was adversely affected. Long-term exposure to acidified conditions…

Ocean Acidification International Coordination Centre (OA-ICC)SalinityTemperateSurvivalAbundance per areainorganicAlkalinityIncubation durationExperimentTemperature waterCarbon inorganic dissolvedNeogoniolithon brassica-floridaCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateAlkalinity totalSalinity standard errortotalCO2 ventMortality SurvivalpHReproductionTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errorStrontium/Calcium ratiodissolvedMagnesium/Calcium ratioCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Field experimentstandard errorEarth System ResearchRecruitmentMortality/SurvivalFOS: Medical biotechnologygeographic locationsPotentiometric titrationCalcite saturation stateCoveragePotentiometricwaterSiteGrowth MorphologyFigureAlkalinity total standard errorBenthosReplicateMediterranean SeaOcean Acidification International Coordination Centre OA ICCAnimaliaBicarbonate ionNeogoniolithon brassica floridaLONGITUDETemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)SpeciespH standard errorCalculated using CO2SYSfungiCarbonate system computation flagFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonAragonite saturation state standard errorPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideMolluscaGrowth/MorphologySingle speciesLATITUDEBenthic animalsFugacity of carbon dioxide water at sea surface temperature wet airMagnesium Calcium ratioCoast and continental shelfDendropoma petraeumStrontium Calcium ratio

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Seawater carbonate chemistry and growth, physiological performance of the Manila clam Ruditapes philippinarum

2018

Ocean acidification may interfere with the calcifying physiology of marine bivalves. Therefore, understanding their capacity for acclimation and adaption to low pH over multiple generations is crucial to make predictions about the fate of this economically and ecologically important fauna in an acidifying ocean. Transgenerational exposure to an acidification scenario projected by the end of the century (i.e., pH 7.7) has been shown to confer resilience to juvenile offspring of the Manila clam, Ruditapes philippinarum. However, whether, and to what extent, this resilience can persist into adulthood are unknown and the mechanisms driving transgenerational acclimation remain poorly understood.…

Ocean Acidification International Coordination Centre (OA-ICC)TemperateRegistration number of speciesCondition indexSalinityBicarbonate ion standard deviationinorganicAlkalinity total standard deviationAlkalinityCalculated using seacarb after Orr et al. (2018)Growth rate standard deviationFugacity of carbon dioxide in seawater standard deviationExperimentTemperature waterCarbon inorganic dissolvedRuditapes philippinarumCalculated using seacarb after Nisumaa et al 2010PercentageAragonite saturation stateNorth PacificAlkalinity totalδ13C dissolved inorganic carbon standard deviationtotalpHRespirationTemperaturedissolvedLaboratory experimentCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Carbon dioxide standard deviationTemperature water standard deviationContainers and aquaria 20 1000 L or 1 m 2δ13C dissolved inorganic carbonEarth System Researchδ13CContainers and aquaria (20-1000 L or < 1 m**2)Metabolic rate of oxygen standard deviationstandard deviationUniform resource locator link to referenceCalcite saturation stateFugacity of carbon dioxide in seawaterwaterPartial pressure of carbon dioxideGrowth MorphologyContainers and aquaria (20-1000 L or < 1 m**2)Aragonite saturation state standard deviationBenthosUniform resource locator/link to referenceOther studied parameter or processSalinity standard deviationOcean Acidification International Coordination Centre OA ICCAnimaliaCarbon inorganic dissolved standard deviationCalcite saturation state standard deviationTypeBicarbonate ionCalculated using seacarb after Nisumaa et al. (2010)SpeciesGrowth rateCondition index standard deviationPartial pressure of carbon dioxide standard deviationMetabolic rate of oxygenCarbonate system computation flagpH standard deviationCarbonate ion standard deviationdissolved inorganic carbonCalculated using seacarb after Orr et al 2018Fugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonTreatmentPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideMolluscaGrowth/MorphologySingle speciesFugacity of carbon dioxide water at sea surface temperature wet airBenthic animalsδ13C standard deviationCoast and continental shelf

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Seawater carbonate chemistry and somatic and otolith growth relationship of Symphodus ocellatus

2019

Ocean acidification (OA) may have varied effects on fish eco-physiological responses. Most OA studies have been carried out in laboratory conditions without considering the in situ pCO2/pH variability documented for many marine coastal ecosystems. Using a standard otolith ageing technique, we assessed how in situ ocean acidification (ambient, versus end-of-century CO2 levels) can affect somatic and otolith growth, and their relationship in a coastal fish. Somatic and otolith growth rates of juveniles of the ocellated wrasse Symphodus ocellatus living off a Mediterranean CO2 seep increased at the high-pCO2 site. Also, we detected that slower-growing individuals living at ambient pCO2 levels …

Ocean Acidification International Coordination Centre (OA-ICC)TemperateRegistration number of speciesIdentificationSalinityinorganicAlkalinityExperimentTemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateChordataAlkalinity totaltotalCO2 ventTime in dayspHPelagosSymphodus ocellatusTemperaturedissolvedLength totalCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Temperature water standard deviationEarth System Researchstandard deviationField observationUniform resource locator link to referencePotentiometric titrationCalcite saturation stateLengthPotentiometricwaterPartial pressure of carbon dioxideSiteGrowth MorphologyAgeUniform resource locator/link to referenceSalinity standard deviationOcean Acidification International Coordination Centre OA ICCMediterranean SeaAnimaliaTypeSampling dateBicarbonate ionNektonCalculated using seacarb after Nisumaa et al. (2010)SpeciesCalculated using CO2SYSPartial pressure of carbon dioxide standard deviationCarbonate system computation flagpH standard deviationFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideGrowth/MorphologySingle speciesFugacity of carbon dioxide water at sea surface temperature wet airsense organs

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Seawater carbonate chemistry and carbon sources of mussel shell carbonate

2018

Ocean acidification and warming is widely reported to affect the ability of marine bivalves to calcify, but little is known about the underlying mechanisms. In particular, the response of their calcifying fluid carbonate chemistry to changing seawater carbonate chemistry remains poorly understood. The present study deciphers sources of the dissolved inorganic carbon (DIC) in the calcifying fluid of the blue mussel (Mytilus edulis) reared at two pH (8.1 and 7.7) and temperature (16 and 22 °C) levels for five weeks. Stable carbon isotopic ratios of seawater DIC, mussel soft tissues and shells were measured to determine the relative contribution of seawater DIC and metabolically generated carb…

Ocean Acidification International Coordination Centre (OA-ICC)TemperateRegistration number of speciesSalinityMytilus edulisinorganicAlkalinityExperimentTemperature waterCarbon inorganic dissolvedhemic and lymphatic diseasesCalculated using seacarb after Nisumaa et al 2010PercentageAragonite saturation stateNorth Pacificδ13C dissolved inorganic carbon standard deviationAlkalinity totalSalinity standard errortotalpHTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedLaboratory experimentCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard errorContainers and aquaria 20 1000 L or 1 m 2δ13C dissolved inorganic carbonEarth System Researchδ13CContainers and aquaria (20-1000 L or < 1 m**2)standard deviationUniform resource locator link to referencecirculatory and respiratory physiologyCalcite saturation statewaterContainers and aquaria (20-1000 L or < 1 m**2)BenthosAlkalinity total standard errorUniform resource locator/link to referenceOcean Acidification International Coordination Centre OA ICCAnimaliaTypeBicarbonate ionTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)SpeciespH standard errorCalcite saturation state standard errorCarbonate system computation flagdissolved inorganic carbonFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonBiomass/Abundance/Elemental compositionPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideMolluscaSingle speciesFugacity of carbon dioxide water at sea surface temperature wet airBenthic animalsδ13C standard deviationBiomass Abundance Elemental compositionCoast and continental shelf

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Individual and population-level responses to ocean acidification

2016

Ocean acidification is predicted to have detrimental effects on many marine organisms and ecological processes. Despite growing evidence for direct impacts on specific species, few studies have simultaneously considered the effects of ocean acidification on individuals (e.g. consequences for energy budgets and resource partitioning) and population level demographic processes. Here we show that ocean acidification increases energetic demands on gastropods resulting in altered energy allocation, i.e. reduced shell size but increased body mass. When scaled up to the population level, long-term exposure to ocean acidification altered population demography, with evidence of a reduction in the pr…

Ocean Acidification International Coordination Centre (OA-ICC)TemperateRegistration number of speciesSalinityinorganicBottles or small containers/Aquaria (<20 L)AlkalinityExperimentTemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateRespiration rate oxygenBottles or small containers Aquaria 20 LAlkalinity totalSalinity standard errortotalCO2 ventpHRespirationTemperaturedissolvedCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Field experimentstandard errorCarbon inorganic dissolved standard errorRespiration rateEarth System ResearchSexUniform resource locator link to referencePotentiometric titrationCalcite saturation stateDry masswaterSiteHexaplex trunculusBenthosAlkalinity total standard errorUniform resource locator/link to referenceOcean Acidification International Coordination Centre OA ICCMediterranean SeaAnimaliaTypeBicarbonate ionTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)SpeciesWet massBottles or small containers/Aquaria (<20 L)Calculated using CO2SYSCarbonate system computation flagFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonBiomass/Abundance/Elemental compositionTreatmentPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideMolluscaSingle speciesFugacity of carbon dioxide water at sea surface temperature wet airBenthic animalsBiomass Abundance Elemental compositionCoast and continental shelfoxygen

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Macroalgal responses to ocean acidification depend on nutrient and light levels

2015

Ocean acidification may benefit algae that are able to capitalize on increased carbon availability for photosynthesis, but it is expected to have adverse effects on calcified algae through dissolution. Shifts in dominance between primary producers will have knock-on effects on marine ecosystems and will likely vary regionally, depending on factors such as irradiance (light vs. shade) and nutrient levels (oligotrophic vs. eutrophic). Thus experiments are needed to evaluate interactive effects of combined stressors in the field. In this study, we investigated the physiological responses of macroalgae near a CO2 seep in oligotrophic waters off Vulcano (Italy). The algae were incubated in situ …

Ocean Acidification International Coordination Centre (OA-ICC)TemperateSalinityChlorophyll aFucoxanthininorganicAlkalinityPhotosynthetic efficiency standard errorChlorophyll cNitrogen content per dry mass standard errorLight saturation point standard errorPhenolics allTemperature waterCarbon inorganic dissolvedMacroalgaeCalculated using seacarb after Nisumaa et al 2010Carbon Nitrogen ratioAragonite saturation stateAlkalinity totalallCarbon per dry massSalinity standard errortotalCarbon content per dry mass standard errorPhenolics all standard errorCO2 ventChromistapHMaximum photochemical quantum yield of photosystem II standard errorTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedAntioxidant activity standard errorCarbonate ionMaximum photochemical quantum yield of photosystem IIPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Field experimentstandard errorNitrogen content per dry massElectron transport rate standard errorFucoxanthin standard errorEarth System ResearchViolaxanthinPhenolicsChlorophyll a standard errorCarbon dioxide standard errorPotentiometric titrationCalcite saturation stateCarbon/Nitrogen ratio standard errorNitrogenOchrophytaPotentiometricper dry masswaterChlorophyll c standard errorBenthosAlkalinity total standard errorAntioxidant activityElectron transport rateLight saturation pointOcean Acidification International Coordination Centre OA ICCMacro-nutrientsMediterranean SeaNitrogen per dry massBicarbonate ionTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)Primary production PhotosynthesisSpeciespH standard errorCalcite saturation state standard errorCystoseira compressaCalculated using CO2SYSNon photochemical quenchingCarbon content per dry massCarbonate system computation flagViolaxanthin standard errorPrimary production/PhotosynthesisFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonCarbon/Nitrogen ratioBiomass/Abundance/Elemental compositionTreatmentPartial pressure of carbon dioxide water at sea surface temperature wet airAragonite saturation state standard errorCarbon dioxideMacro nutrientsCarbonate ion standard errorSingle speciesFugacity of carbon dioxide water at sea surface temperature wet airPadina pavonicaBiomass Abundance Elemental compositionCoast and continental shelfPhotosynthetic efficiencyBicarbonate ion standard errorNon photochemical quenching standard error

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