Search results for "Field observation"

showing 10 items of 19 documents

Management of Arfak Rainbow Fish Based on Bioecologycal Aspect (Case in Some River in Manokwari)

2018

The aim of this research is to study the bioecological aspect of Arfak Rainbowfish, distribution long-wieght frequency and management of endemic arfak rainbow fish in Manokwari. This study conducted for five months from 7 September 2015 to 9 Januari 2016. Fish sample were collected from Prafi river, Nimbai river and Aimasi river and brought to fisheries laboratory. The method of this research is descriptive methode with field observation. The result of water quality parameters are temperature average 30.01oC±1,06oC, flow rate is slow 0.92±0,12, the pH 7,80±0,12, oxygen solute 5,38±0,24, average biological oxygen demand for Prafi river 4 mg/L, Nimbai river 3.1 mg/L, Aimasi river 5.2 mg/L and…

Biochemical oxygen demandHydrologybiologyChemical oxygen demandFish <Actinopterygii>Environmental scienceWater qualityRainbowfishbiology.organism_classificationField observationJURNAL SUMBERDAYA AKUATIK INDOPASIFIK
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Ocean acidification affects fish spawning but not paternity at CO2 seeps

2016

Fish exhibit impaired sensory function and altered behaviour at levels of ocean acidification expected to occur owing to anthropogenic carbon dioxide emissions during this century. We provide the first evidence of the effects of ocean acidification on reproductive behaviour of fish in the wild. Satellite and sneaker male ocellated wrasse (Symphodus ocellatus) compete to fertilize eggs guarded by dominant nesting males. Key mating behaviours such as dominant male courtship and nest defence did not differ between sites with ambient versus elevated CO2 concentrations. Dominant males did, however, experience significantly lower rates of pair spawning at elevated CO2 levels. Despite the higher r…

Eggs standard errorOcean Acidification International Coordination Centre (OA-ICC)TemperateRegistration number of speciesIdentificationSalinityEggsinorganicAlkalinityExperimentNumber standard errorDominant male paternityTemperature waterCarbon inorganic dissolvedNumber of individualsCalculated using seacarb after Nisumaa et al 2010Number of spawning events standard errorAragonite saturation stateFish standard lengthChordataAlkalinity totalSalinity standard errortotalCO2 ventReplicatesCourtship standard errorpHPelagosReproductionSymphodus ocellatusTemperatureNumberPartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard errorIndividuals standard errorEarth System ResearchField observationFOS: Medical biotechnologyUniform resource locator link to referencePotentiometric titrationCalcite saturation stateLocationPotentiometricwaterNumber of spawning eventsAgeUniform resource locator/link to referenceOcean Acidification International Coordination Centre OA ICCMediterranean SeaAnimaliaEggs areaBehaviourTypeBicarbonate ionNektonEggs area standard errorTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)SpeciespH standard errorWet massDominant male paternity standard errorCalculated using CO2SYSEvent labelIndividualsCourtshipCarbonate system computation flagstandard lengthFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonTreatmentPartial pressure of carbon dioxide water at sea surface temperature wet airFishCarbon dioxideSingle speciesFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelf
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Profil Tempat Tumbuh Sarang Semut (Myrmecodia spp.) Di Distrik Manokwari Selatan Papua Barat

2019

Papua has a very high diversity of flora species, one of which is a type of Sarang Semut. Different growing conditions will affect the level of diversity of plants. For that information about the place to grow Ant Plant is needed as basic information for the development of the cultivation of Ant plants. The method used is descriptive method with field observation technique. The results showed that the type of ant nest plant found in South Manokwari was a type of Myrmecodia pendans and Myrmecodia cf. schlechteri. Both of these species do not grow evenly in all study locations even at the same height, this plant has a characteristic growing place: it grows on host trees that are not slippery,…

FloraMyrmecophytebiologyHost (biology)BotanyAnt colonyMyrmecodiabiology.organism_classificationField observationEnviroScienteae
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Seawater carbonate chemistry and nest guarding behaviour of a temperate wrasse

2021

Organisms may respond to changing environmental conditions by adjusting their behaviour (i.e., behavioural plasticity). Ocean acidification (OA), resulting from anthropogenic emissions of carbon dioxide (CO2), is predicted to impair sensory function and behaviour of fish. However, reproductive behaviours, and parental care in particular, and their role in mediating responses to OA are presently overlooked. Here, we assessed whether the nesting male ocellated wrasse Symphodus ocellatus from sites with different CO2 concentrations showed different behaviours during their breeding season. We also investigated potential re-allocation of the time-budget towards different behavioural activities b…

Ocean Acidification International Coordination Centre (OA-ICC)IdentificationPotentiometric titrationRegistration number of speciesSalinityTemperateCalcite saturation statePotentiometricinorganicwaterAlkalinitySiteTemperature waterCarbon inorganic dissolvedUniform resource locator/link to referenceCalculated using seacarb after Nisumaa et al 2010Mediterranean SeaOcean Acidification International Coordination Centre OA ICCAnimaliaAragonite saturation stateBehaviourBicarbonate ionTime in secondsTypeNektonAlkalinity totalChordataCalculated using seacarb after Nisumaa et al. (2010)totalCO2 ventSpeciespHPelagosSymphodus ocellatusTemperatureCarbonate system computation flagdissolvedFugacity of carbon dioxide (water) at sea surface temperature (wet air)Carbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)CarbonPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideSingle speciesEarth System ResearchFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelfField observationUniform resource locator link to reference
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Seawater carbonate chemistry and shell mineralogy, microstructure, and mechanical strength of four Mediterranean gastropod species near a CO2 seep

2017

Marine CO2 seeps allow the study of the long-term effects of elevated pCO2 (ocean acidification) on marine invertebrate biomineralization. We investigated the effects of ocean acidification on shell composition and structure in four ecologically important species of Mediterranean gastropods (two limpets, a top-shell snail, and a whelk). Individuals were sampled from three sites near a volcanic CO2 seep off Vulcano Island, Italy. The three sites represented ambient (8.15 pH), moderate (8.03 pH) and low (7.73 pH) seawater mean pH. Shell mineralogy, microstructure, and mechanical strength were examined in all four species. We found that the calcite/aragonite ratio could vary and increased sign…

Ocean Acidification International Coordination Centre (OA-ICC)IdentificationRegistration number of speciesSalinityTemperateinorganicAlkalinityExperimentTemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateAlkalinity totalSalinity standard errorPatella caeruleatotalCO2 ventpHCalciteTemperaturePartial pressure of carbon dioxide (water) at sea surface temperature (wet air) standard errordissolvedCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)standard errorEarth System ResearchField observationUniform resource locator link to referencePotentiometric titrationCalcite saturation stateLengthLocationPotentiometricwaterGrowth MorphologyHexaplex trunculusAlkalinity total standard errorBenthosUniform resource locator/link to referenceOsilinus turbinatusOther studied parameter or processMediterranean SeaOcean Acidification International Coordination Centre OA ICCAnimaliaBicarbonate ionTypeTemperature water standard errorCalculated using seacarb after Nisumaa et al. (2010)ForceSpeciespH standard errorCalculated using CO2SYSCarbonate system computation flagFugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonElasticityTreatmentAragonite saturation state standard errorPartial pressure of carbon dioxide water at sea surface temperature wet airAragoniteCarbon dioxideMolluscaGrowth/MorphologySingle speciesBenthic animalsFugacity of carbon dioxide water at sea surface temperature wet airPatella rusticaToughnessCoast and continental shelf
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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 (&lt;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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The impact of ocean acidification and warming on the skeletal mechanical properties of the sea urchin Paracentrotus lividus from laboratory and field…

2016

Increased atmospheric CO2 concentration is leading to changes in the carbonate chemistry and the temperature of the ocean. The impact of these processes on marine organisms will depend on their ability to cope with those changes, particularly the maintenance of calcium carbonate structures. Both a laboratory experiment (long-term exposure to decreased pH and increased temperature) and collections of individuals from natural environments characterized by low pH levels (individuals from intertidal pools and around a CO2 seep) were here coupled to comprehensively study the impact of near-future conditions of pH and temperature on the mechanical properties of the skeleton of the euechinoid sea …

Ocean Acidification International Coordination Centre (OA-ICC)IdentificationSalinityTemperateinorganicAlkalinityAreaExperimentTemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateMesocosm or benthocosmAlkalinity totaltotalYoung s moduluspHNorth AtlanticTemperatureProportiondissolvedCarbonate ionLaboratory experimentPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Earth System ResearchField observationThicknessEchinodermataCalcite saturation stateLengthwaterYoung's modulusGrowth MorphologyBenthosReplicateDiameterHardnessOther studied parameter or processOcean Acidification International Coordination Centre OA ICCAnimaliaBicarbonate ionCalculated using seacarb after Nisumaa et al. (2010)ForceSpeciesHeightTest setCarbonate 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 dioxideParacentrotus lividusGrowth/MorphologySingle speciesBenthic animalsFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelfSecond moment of area
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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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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 composition of intertidal and subtidal communities

2018

Rising atmospheric concentrations of carbon dioxide are causing surface seawater pH and carbonate ion concentrations to fall in a process known as ocean acidification. To assess the likely ecological effects of ocean acidification we compared intertidal and subtidal marine communities at increasing levels of pCO2 at recently discovered volcanic seeps off the Pacific coast of Japan (34° N). This study region is of particular interest for ocean acidification research as it has naturally low levels of surface seawater pCO2 (280–320 µatm) and is located at a transition zone between temperate and sub-tropical communities. We provide the first assessment of ocean acidification effects at a biogeo…

Ocean Acidification International Coordination Centre (OA-ICC)SalinityTemperateBicarbonate ion standard deviationCommunity composition and diversityAlkalinity total standard deviationinorganicAlkalinityCalculated using seacarb after Orr et al. (2018)Fugacity of carbon dioxide in seawater standard deviationExperimentTemperature waterCarbon inorganic dissolvedCalculated using seacarb after Nisumaa et al 2010Aragonite saturation stateNorth PacificAlkalinity totaltotalCO2 ventpHTemperaturedissolvedCarbonate ionPartial pressure of carbon dioxide (water) at sea surface temperature (wet air)Carbon dioxide standard deviationTemperature water standard deviationEarth System ResearchField observationstandard deviationCalcite saturation stateCoverageFugacity of carbon dioxide in seawaterwaterPartial pressure of carbon dioxideSiteRocky-shore communityAragonite saturation state standard deviationBenthosSalinity standard deviationOcean Acidification International Coordination Centre OA ICCCarbon inorganic dissolved standard deviationCalcite saturation state standard deviationBicarbonate ionTypeCalculated using seacarb after Nisumaa et al. (2010)Partial pressure of carbon dioxide standard deviationIndividualsCarbonate system computation flagpH standard deviationCarbonate ion standard deviationCalculated using seacarb after Orr et al 2018Fugacity of carbon dioxide (water) at sea surface temperature (wet air)CarbonPartial pressure of carbon dioxide water at sea surface temperature wet airCarbon dioxideEntire communityRocky shore communityFugacity of carbon dioxide water at sea surface temperature wet airCoast and continental shelf
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