Search results for "temperate"

showing 3 items of 193 documents

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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Physiological advantages of dwarfing in surviving extinctions in high-CO2 oceans

2015

Excessive CO2 in the present-day ocean-atmosphere system is causing ocean acidification, and is likely to cause a severe biodiversity decline in the future, mirroring effects in many past mass extinctions. Fossil records demonstrate that organisms surviving such events were often smaller than those before, a phenomenon called the Lilliput effect. Here, we show that two gastropod species adapted to acidified seawater at shallow-water CO2 seeps were smaller than those found in normal pH conditions and had higher mass-specific energy consumption but significantly lower whole-animal metabolic energy demand. These physiological changes allowed the animals to maintain calcification and to partial…

Ocean Acidification International Coordination Centre (OA-ICC)IdentificationSalinityTemperateBicarbonate ion standard deviationBottles or small containers/Aquaria (<20 L)Alkalinity total standard deviationinorganicAlkalinityExperimentTemperature waterCarbon inorganic dissolvedWidthCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateRespiration rate oxygenAlkalinity totalBottles or small containers Aquaria 20 LtotalCO2 ventpHRespirationCalcification rate of calcium carbonateTemperatureMonthdissolvedCarbonate ionLaboratory experimentPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Temperature water standard deviationRespiration rateEarth System ResearchField observationstandard deviationThicknessCalcification/DissolutionPotentiometric titrationCalcite saturation statePotentiometricwaterPartial pressure of carbon dioxideSiteGrowth MorphologyFigureAragonite saturation state standard deviationBenthosMediterranean SeaOcean Acidification International Coordination Centre OA ICCCalcite saturation state standard deviationAnimaliaBicarbonate ionLONGITUDECalculated using seacarb after Nisumaa et al. (2010)SpeciesCyclope neriteaBottles or small containers/Aquaria (<20 L)Calculated using CO2SYSHeightPartial pressure of carbon dioxide standard deviationCarbonate system computation flagpH standard deviationCarbonate ion standard deviationFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonHeight/width ratioTreatmentPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideMolluscaGrowth/MorphologySingle speciesCalcification DissolutionLATITUDEHeight width ratioBenthic animalsFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelfNassarius corniculusoxygenTable

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Seawater carbonate chemistry and coralline algal diversity

2021

Calcified coralline algae are ecologically important in rocky habitats in the marine photic zone worldwide and there is growing concern that ocean acidification will severely impact them. Laboratory studies of these algae in simulated ocean acidification conditions have revealed wide variability in growth, photosynthesis and calcification responses, making it difficult to assess their future biodiversity, abundance and contribution to ecosystem function. Here, we apply molecular systematic tools to assess the impact of natural gradients in seawater carbonate chemistry on the biodiversity of coralline algae in the Mediterranean and the NW Pacific, link this to their evolutionary history and …

Ocean Acidification International Coordination Centre (OA-ICC)TemperateSalinityCommunity composition and diversityBicarbonate ion standard deviationinorganicAlkalinity total standard deviationAlkalinityExperimentTemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateNorth PacificMarine habitatAlkalinity totaltotalCO2 ventpHTemperaturedissolvedCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Calcium carbonate standard deviationstandard errorEarth System Researchstandard deviationField observationCalcium carbonateCoverageCalcite saturation stateLocationwaterPartial pressure of carbon dioxideSiteRocky-shore communityCalcium carbonate massAragonite saturation state standard deviationBenthosSalinity standard deviationOcean Acidification International Coordination Centre OA ICCMediterranean SeaCarbon inorganic dissolved standard deviationCalcite saturation state standard deviationTypeBicarbonate ionCalculated using seacarb after Nisumaa et al. (2010)Coverage standard errorfungiEvent labelPartial pressure of carbon dioxide standard deviationCarbonate system computation flagpH standard deviationCarbonate ion standard deviationFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideRocky shore communityEntire communityFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelfSpecies richness

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