Search results for "Event label"

showing 10 items of 23 documents

(Supplement Table S2) Results of 230Th/U-dating

2016

We compared the suitability of two skeletal materials of the Atlantic brain coral Diploria strigosa for 230Th/U-dating: the commonly used bulk material comprising all skeletal elements and the denser theca wall material. Eight fossil corals of presumably Last Interglacial age from Bonaire, southern Caribbean Sea, were investigated, and several sub-samples were dated from each coral. For four corals, both the ages and the activity ratios of the bulk material and theca wall agree within uncertainty. Three corals show significantly older ages for their bulk material than for their theca wall material as well as substantially elevated 232Th content and (230Th/238U) ratios. The bulk material sam…

Hand drillUranium 238Thorium 230 Uranium 238 activity ratioThorium-230/Uranium-238 activity ratioUranium-238Thorium-230/Uranium-238 activity ratio standard deviationAGECenter for Marine Environmental Sciences MARUMMulti collector inductively coupled plasma mass spectrometer MC ICP MSCenter for Marine Environmental Sciences (MARUM)Thorium 232Thorium 232 Uranium 238 activity ratioThorium-232/Uranium-238 activity ratio standard deviationEvent labelCommentUranium 234 Uranium 238 activity ratioUranium-234/Uranium-238 activity ratioDrilling/drill rigAge 230Th/U Thorium-UraniumAge standard deviationDrilling drill rigThorium-232/Uranium-238 activity ratioUranium-234/Uranium-238 activity ratio standard deviationThorium-232230Th U Thorium UraniumEarth System ResearchGroupMulti-collector inductively coupled plasma mass spectrometer (MC-ICP-MS)standard deviation
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(Table 1) Trace element/Ca ratios of Orbulina universa shells from late Neogene Mediterranean samples

2008

A Mediterranean composite sedimentary record was analyzed for Ba/Ca ratios on carbonate shells of Orbulina universa planktonic foraminifer (Ba/Ca)carb providing the opportunity to study and assess the extent of freshwater inputs on the basin and possible impacts on its dynamics during the Tortonian to Recent period. A number of scanning electron microscope analyses and auxiliary trace element measurements (Mn, Sr, and Mg), obtained from the same samples, exclude important diagenetic effects on the studied biogenic carbonates and corroborate the reliability of (Ba/Ca)carb ratios in foraminifera calcite as indicators of seawater source components during the studied interval. A long-term trend…

Leg160Longitude of eventLithology composition faciesInductively coupled plasma - mass spectrometry (ICP-MS)Barium Calcium ratioOcean Drilling Program (ODP)Latitude of eventManganese/Calcium ratioOrbulina universa Barium/Calcium ratioAGEOrbulina universaLeg107Inductively coupled plasma mass spectrometry ICP MSOutcrop sampleManganese Calcium ratioSample code/labelEvent labelJoides ResolutionLithology/composition/faciesSample code labelStrontium/Calcium ratioDrilling/drill rigDrilling drill rigOrbulina universa δ13COrbulina universa Magnesium/Calcium ratioδ13CEarth System ResearchOcean Drilling Program ODPMagnesium Calcium ratioStrontium Calcium ratioComposite Core
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Cloud top altitude retrieved from Lidar measurements during ACLOUD at 1 second resolution

2021

During the ACLOUD aircraft campaign (23.5.2017 - 26.6.2017) the AMALi Lidar was installed mostly nadir pointing. This dataset contains the cloud top altitude from those measurements (altitudes with a strong signal increase) as well as a cloud mask, derived from the optical depth of the column at 1 second resolution. The majority of the data was collected northwest of the Svalbard archipelago. More details on the campaign can be found in Wendisch 2018 and Ehrlich 2019 and here (https://home.uni-leipzig.de/~ehrlich/ACLOUD_wiki_doku). Please check the data documentation (https://download.pangaea.de/reference/108729/attachments/readme_documentation_AMALi_cloudtop.pdf) before using this dataset.

Longitude of eventAircraftPolar 5Binary ObjectAC3Latitude of eventSvalbardArcticArctic Amplification (AC3)Date/Time of eventAirborne Mobile Aerosol Lidarcloudairborne measurementsLidarEvent labelDate Time of eventairborneACLOUDBinary Object (File Size)mixed phase cloudsAMALiP5_206_ACLOUD_2017airborne lidarArctic Amplification AC3cloud top altitudeEarth System Researchmixed-phase cloudsBinary Object File Size
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Global distributions of diazotrophs Gamma-A nifH genes abundance - Depth integrated values computed from a collection of source datasets - Contributi…

2013

The MAREDAT atlas covers 11 types of plankton, ranging in size from bacteria to jellyfish. Together, these plankton groups determine the health and productivity of the global ocean and play a vital role in the global carbon cycle. Working within a uniform and consistent spatial and depth grid (map) of the global ocean, the researchers compiled thousands and tens of thousands of data points to identify regions of plankton abundance and scarcity as well as areas of data abundance and scarcity. At many of the grid points, the MAREDAT team accomplished the difficult conversion from abundance (numbers of organisms) to biomass (carbon mass of organisms). The MAREDAT atlas provides an unprecedente…

M60/5SalinityChlorophyll aDiazotrophs total biomass as carbonUniform resource locator link to source data fileNitrateCTD/RosetteLatitude of eventNiskinM55 1Temperature waterCalothrix abundance expressed in number of nifH gene copiesratio expressed in mass of carbon per amount of nifH gene copiesCalculatedtop minUnicellular cyanobacteria-B biological trait ratio expressed in mass of carbon per amount of nifH gene copiesCD132biomass as carbonTrichodesmium biomass as carbonM55/1bottom maxCTD SeabirdTemperatureDepth top/minCTD RosetteSeabirdRichelia biological trait ratio expressed in mass of carbon per amount of nifH gene copiesCalothrixSO187 2Unicellular cyanobacteria-B abundance expressed in number of nifH gene copiesTrichodesmiumEarth System ResearchMARine Ecosystem Model Intercomparison Project MAREMIPDiazotrophsLongitude of eventRichelia associated speciesSample methodCalothrix biological trait ratio expressed in mass of carbon per amount of nifH gene copiesIronBottle NiskinwaterIn situ pumpMARine Ecosystem Model Intercomparison Project (MAREMIP)Unicellular cyanobacteria-C abundance expressed in number of nifH gene copiesPhosphateWater sampleSample commentUnicellular cyanobacteria biomassUniform resource locator/link to source data filetotal biomass as carbonHeterocyst biomassUnicellular cyanobacteriaProteobacteriaDate/Time of eventMeteor 1986Richelia abundance expressed in number of nifH gene copiesUnicellular cyanobacteria CUnicellular cyanobacteria Bbiological traitSO187/2RicheliaUnicellular cyanobacteria ADEPTH waterbiomassTrichodesmium abundance expressed in number of nifH gene copiesMeteor (1986)BottleDepthEvent labelDate Time of eventTrichodesmium biological trait ratio expressed in mass of carbon per amount of nifH gene copiesUnicellular cyanobacteria-C biological trait ratio expressed in mass of carbon per amount of nifH gene copiesMeasured at sea surfaceCTDCalothrix associated speciesCharles DarwinSonneabundance expressed in number of nifH gene copiesM60 5Depth bottom/maxUnicellular cyanobacteria-A abundance expressed in number of nifH gene copiesassociated speciesProteobacteria abundance expressed in number of nifH gene copiesHeterocyst
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Morphological determination of the phototrophic community composition of biological soil crusts in coastal sand dunes in northern Germany

2022

This dataset comprises the microbial community composition of biological soil crusts in north-German sand dunes. For this we obtained enrichment cultures of phototrophic microorganisms, by placing fragments of biocrusts of the same Petri dishes as used for sequencing, in Petri dishes with Bold Basal (1N BBM) agarized medium (Bischoff and Bold 1963). Cultures were grown under standard laboratory conditions: with a 12-hour alteration of light and dark phases and irradiation of 25 μmol photons m-2 s-1 at a temperature 20 ± 5 ºС. Microscopic study of these raw cultures began in the third week of cultivation. Morphological examinations were performed using Olympus BX53 light microscope with Noma…

Nostoc cf linckiaNodosilinea cf. epilithicaTetracystis cf. sarcinalisCylindrocystis cf crassaPtychostomum moravicumElliptochloris subsphaericaThin layer chromatographyAsterococcus spCylindrocystis cf. crassaCladonia phyllophoraChloroidium cf ellipsoideumChlorolobion sp.Hypnum cupressiforme var lacunosumHypogymnia physodesStichococcus cf. bacillarisEremochloris spCrustsParmelia sulcataStenomitos sp.algaeBracteacoccus sp.Chlorococcum spPtychostomum capillarewith Nomarski DIC opticsCladonia chlorophaeaCladonia foliaceaBiospheric SciencesMyrmecia cf irregularisField experimentNodosilinea cf epilithicaBacidina etayanaPolytrichum juniperinumCoccomyxa sp.Placynthiella uliginosaLeptolyngbya spPohlia nutansCladonia furcataPeltigera extenuataWatanabea cf. acidophilaGeosciencesChloroidium cf. ellipsoideumLongitude of eventWatanabea cf acidophilaParietochloris cf. alveolarisPtychostomum imbricatulumSiteLight microscope Olympus Ltd BX53 with Nomarski DIC opticsDicranum scopariumSyntrichia ruraliformisBX53Pseudochlorella spKlebsormidium cf flaccidumOlympus LtdCladonia novochlorophaeaDATE TIMECladonia cocciferaCladonia conistaNostoc cf. linckiaDiplosphaera chodatii16S rRNAOxyrrhynchium praelongumTetracystis cf sarcinalisChlorokybus atmophyticusNostoc sp.Interfilum cf. massjukiaeMicarea misellaCoelastrella spStenomitos spNostoc spEvent labelLecanora hageniiPolytrichum piliferumTetradesmus arenicolaElevation of eventPlanophila spChlorococcum sp.Campylopus introflexusCladonia ramulosaCephaloziella divaricataPseudochlorella sp.Nostoc cf. communeChlorolobion spNannochloris spCladonia rangiformisMacrochloris spNannochloris sp.Cladonia fimbriataEvernia prunastriCaloplaca cerinellaLecania cyrtellaLecanora persimilisCladonia subulataPseudoscleropodium purumStichococcus cf bacillarisLatitude of eventLight microscopeInterfilum terricolaCladonia glaucaCladonia portentosaPlanophila sp.Spongiochloris spCladonia reisediment analysisCladonia gracilisHypnum cupressiformeTolypothrix cf. byssoideaCeratodon purpureusEcologyCladonia uncialis ssp biuncialisPseudomuriella cf. aurantiacaCylindrocystis sp.Klebsormidium cf. subtileRacomitrium canescensMicrocoleus vaginatusCoccomyxa spCylindrocystis spLobochlamys sp.soil ecologyXanthoria parietinaCladonia ciliataHypnum cupressiforme var. lacunosumActinochloris terrestrisInterfilum cf massjukiaeNatural SciencesChlorella vulgarisMacrochloris sp.Coelastrella sp.Bracteacoccus spRacomitrium elongatumCladonia scabriusculaNostoc cf. edaphicumStichococcus allasLocationNostoc cf edaphicumKlebsormidium cf. flaccidumLophozia bicuspidataPseudomuriella cf aurantiacaKlebsormidium crenulatumduneNostoc cf communeLeptolyngbya sp.Ptilidium ciliatumCladonia macilentaMyrmecia cf. irregularisPtychostomum compactumLobochlamys spPleurozium schreberiCladonia arbusculaPhyscia tenellaBrachythecium albicansPeltigera hymeniaAmandinea punctataTimaviella sp.Scoliciosporum galluraeParietochloris cf alveolarisAsterococcus sp.Hennediella heimiiTimaviella spDATE/TIMECladonia humilisBryum capillareTolypothrix cf byssoideaKlebsormidium cf subtileEremochloris sp.Cladonia floerkeanaSpongiochloris sp.Cladonia uncialis ssp. biuncialisHypnum jutlandicum
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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 (&lt;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 &lt; 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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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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Seawater carbonate chemistry and percentage cover of macroalgal species at three locations at Vulcano, Italy

2017

Beneficial effects of CO2 on photosynthetic organisms will be a key driver of ecosystem change under ocean acidification. Predicting the responses of macroalgal species to ocean acidification is complex, but we demonstrate that the response of assemblages to elevated CO2 are correlated with inorganic carbon physiology. We assessed abundance patterns and a proxy for CO2:HCO3- use (delta 13C values) of macroalgae along a gradient of CO2 at a volcanic seep, and examined how shifts in species abundance at other Mediterranean seeps are related to macroalgal inorganic carbon physiology. Five macroalgal species capable of using both HCO3- and CO2 had greater CO2 use as concentrations increased. Th…

Ocean Acidification International Coordination Centre (OA-ICC)TemperateRegistration number of speciesSalinityCaulerpa proliferaCommunity composition and diversityBicarbonate ion standard deviationUdotea petiolatainorganicAlkalinity total standard deviationAlkalinitySargassum muticumDictyota dichotomaHalopteris scopariaYearsCystoseira brachycarpaExperimentTemperature waterCarbon inorganic dissolvedCystoseira foeniculaceaCaulerpa racemosaCalculated using seacarb after Nisumaa et al 2010Cystoseira foeniculataAragonite saturation stateAlkalinity totaltotalCO2 ventpHTemperaturedissolvedCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Acetabularia acetabulumJania rubensCarbon dioxide standard deviationEarth System Researchδ13CLipid contentstandard deviationField observationUniform resource locator link to referenceCystoseira crinitaCoverageCalcite saturation stateLocationwaterSiteRocky-shore communityFigureBenthosUniform resource locator/link to referenceOcean Acidification International Coordination Centre OA ICCMediterranean SeaCarbon inorganic dissolved standard deviationTypeBicarbonate ionDictyopteris polypodioidesDilophus fasciolaCalculated using seacarb after Nisumaa et al. (2010)SpeciesCystoseira compressaEvent labelCarbonate system computation flagpH standard deviationCarbonate ion standard deviationMassFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonOxygenPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideRocky shore communityEntire communityFugacity of carbon dioxide water at sea surface temperature wet airPadina pavonicaSeasonδ13C standard deviationCoast and continental shelfCodium bursaTableCystoseira barbarta
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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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